JPH0626557Y2 - A device to prevent the user from forgetting to turn off the power at the top of an aerial work vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention operates with an upper power supply in which an upper control device for a workbench equipped at the tip of a boom of, for example, an aerial work vehicle is mounted separately from the lower power supply. The present invention relates to a device for preventing a user from forgetting to turn off the upper power switch of an aerial work vehicle designed to prevent forgetting to turn off the upper power switch of the aerial work vehicle. The necessity of exchanging information between the workbench mounted on the tip of the boom and the lower control device mounted on the vehicle body is increasing, and thus the burden on the upper power supply (battery) is significantly increased.

However, it is very difficult to increase the size of the upper power supply device in response to such a request without narrowing the working range and deteriorating workability.

Therefore, in the aerial work vehicle adopting the above-mentioned configuration, the upper power source, that is, the upper battery, that is, the upper battery is charged by the battery charger (including the lower battery) mounted on the vehicle body in the actual situation, except in the normal operation. is there.

[Problems to be solved by the device]

However, when the upper battery is charged by the lower battery charging means as described above, for example, when a load such as the upper control device is connected to the upper battery, a predetermined current is always applied to the upper battery while charging. There is a problem that the target upper battery is not charged because it is discharged to the control device.

[Means for Solving the Purpose and Problem of Invention]

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to separate an upper control device for a workbench equipped at the tip of a boom of an aerial work vehicle or the like from a lower power source. To prevent forgetting to turn off the upper power switch of an aerial work vehicle that is operated by the installed upper power supply.To prevent forgetting to turn off the upper power supply of an aerial work vehicle. In an aerial work vehicle in which an upper power supply separate from the lower power supply is equipped, and the upper power supply operates the upper control device provided on the workbench, the upper power supply is connected between the upper power supply and the upper control device. A power switch is provided for connecting and disconnecting the upper control device, and when the lower power source and the upper power source are connected to charge the upper power source with the lower power source, the power source Switch is features a power off forgotten alarm means actuated when in the connected state.

[Action]

Since the above-mentioned configuration is adopted, when the upper power supply and the upper control device are charged with the lower power supply while the power switch interposed between the upper power supply and the upper control device remains in the contact state, the upper power off forgetting detection means causes the power supply to be turned off. If the user forgets to turn off the switch and the alarm signal is activated by the detection signal of the detection means to notify the operator that he has forgotten to turn off the upper power switch, there is no inadvertent discharge when charging the upper power source, and the The power source can be optimally charged, and therefore, it is not necessary to mount an upper power source having a large capacity more than necessary, so that the weight of the bucket portion can be reduced accordingly.

〔Example〕

Hereinafter, an embodiment of a device for preventing a user from forgetting to turn off the upper power source of an aerial work vehicle according to the present invention will be described in detail with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 is an upper power-off forgetting prevention device 2 according to the present invention.
An aerial work vehicle equipped with (see FIG. 2), 3 is a turntable rotatably mounted on the vehicle body 1a, 4 is a telescopic boom whose base end is rotatably pivoted on the turntable 3,
Reference numeral 5 denotes a hoisting cylinder that is disposed between the turntable 3 and the telescopic boom 4 to hoist and actuate the telescopic boom 4 by expanding and contracting. Reference numeral 8 is a work platform pivotally attached to the tip of the telescopic boom 4 so as to be vertically swingable, and 6a and 6b are balances disposed between the work platform 8 and the tip of the telescopic boom 4 and between the turntable 3 and the telescopic boom 4, respectively. Both balance cylinders 6a and 6b are connected so as to interlock with each other by a closed circuit (not shown). The vehicle body 1a is equipped with a lower power source (including a battery / upper battery charger) 9, and the workbench 8 is equipped with an upper power source (upper battery) 10 and an upper control device 11 operated by the upper battery 10. ing.

By the way, as shown in FIG. 2, the wiring connecting the positive side of the upper power supply 10 and the upper control device 11 includes
A power switch 12 for connecting and disconnecting the positive side of the upper power supply 10 and the upper control device 11 is provided.
A charging switch 14 that interlocks and switches the upper power supply 10 and the lower power supply 9 to connect and disconnect the upper power supply 10 and the lower power supply 9 is provided on the wiring connecting the positive side and the load side of the lower power supply 9.
The upper power switch 12 and the upper control device 11
Wiring for connecting the battery and the charging switch 14 and the lower power source 9
For the wiring that connects to the negative side of the
3 (configured by an alarm buzzer in this embodiment) is connected.

Hereinafter, the operation of the device for forgetting to turn off the upper power source of the aerial work vehicle according to the present invention will be described based on the above embodiment.

Normally, an operator on the workbench 8 operates the upper control device 11 mounted on the workbench 8 to operate the telescopic boom 4
When controlling the operation of the above, etc., the charging switch 14 is switched to the disconnection position to disconnect the connection between the upper power supply 10 and the lower power supply 9, and the power switch 12 is switched to the connection position to connect the upper power supply 10 and the upper control device 11. Connect with. At this time, since the connection between the upper power source 10 and the lower power source 9 is cut off, the alarm buzzer 13 does not operate.

Further, when the upper power supply 10 is charged by the lower power supply 9 during storage, etc., the charging switch 14 is switched to the contact position to connect the upper power supply 10 and the lower power supply 9. At this time, when the power switch 12 is in the contact state, the upper power supply 10 and the lower power supply 9 are connected to the alarm buzzer 13, and the alarm buzzer 13 is activated and the operator operates the power switch 1
You can understand that you have forgotten to turn 2. As a result, when the upper power supply 10 is charged, the charging is never started with the power switch 12 keeping the upper control device 11 and the upper power supply 10 connected. Therefore, the charging error due to forgetting to turn off the power switch as seen in the conventional upper power supply charging device is eliminated, and the upper power supply 10 can always be optimally charged.

[Effect of device]

According to the present invention, as described in detail above, the workbench equipped at the tip of the boom is equipped with the upper power supply separate from the lower power supply,
In an aerial work vehicle in which an upper control device provided on a workbench is operated by the upper power supply, a power switch for connecting and disconnecting the upper power supply and the upper control device is provided between the upper power supply and the upper control device, When the lower power source and the upper power source are connected so as to charge the upper power source with the lower power source, a power-off forgetting alarm means that operates when the power switch is in the connected state is additionally provided. When the lower power source starts to charge the upper power source with the power switch interposed between them being in the contact state, the upper power source forgetting switch detection means detects the power source switch forgetting to turn off, and an alarm is issued by the detection signal of the detecting means. Since the operator is informed that the upper power switch has not been turned off by operating the means, carelessness when charging the upper power supply Since there is no discharge, the upper power supply can always be optimally charged, and therefore it is not necessary to install an upper power supply with a large capacity more than necessary. In addition, it has various excellent effects such as being able to remarkably improve safety.

[Brief description of drawings]

FIG. 1 is a side view showing an example of an aerial work vehicle equipped with an upper power forgetting prevention device for an aerial work vehicle according to the present invention, FIG.
FIG. 1 is a block diagram showing an example of a device for forgetting to turn off the upper power source of an aerial work vehicle. 1 …… Aerial work vehicle 2 …… Upper power off forgetting prevention device,
8 ... Workbench, 9 ... Lower power supply, 10 ... Upper power supply, 1
1 ... Upper control device, 12 ... Power switch,
13 ... Alarm buzzer, 14 ... Charge switch.

Claims (1)

[Scope of utility model registration request] 1. An aerial work vehicle in which a workbench equipped at the tip of a boom is equipped with an upper power supply separate from a lower power supply, and an upper control device provided on the workbench is operated by the upper power supply. A power switch for connecting and disconnecting the upper power supply and the upper control device is provided between the upper power supply and the upper control device, and when the lower power supply and the upper power supply are connected to charge the upper power supply with the lower power supply, An upper power-off forgetting prevention device for an aerial work vehicle, which is provided with a power-off forgetting alarm means that operates when the power switch is in the contact state.