JP2531314Y2 - Radio control system for aerial work vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio control device for an aerial work vehicle.

[0002]

2. Description of the Related Art As shown in FIG. 1, an aerial work vehicle has a boom 3 mounted on a swivel 2 mounted on a vehicle 1 so as to be capable of swiveling drive. The bucket 5 is attached so as to be horizontally swivelable through the intermediary. This type of aerial work vehicle is provided with a boom-related operation control device 6 (a control valve for turning the swivel 2, raising and lowering the boom 3, and extending and retracting) arranged at the base end of the swivel 2 or the boom 3. When operated by the operation means 7 (operation lever device or operation switch) on the bucket, a transmitter 8 comprising a transmitter body 8a for converting the operation signal of the operation means 7 into a radio signal and a transmission antenna 8b on the bucket 5
The radio wave signal from the transmitting antenna 8b of the transmitter 8 is received by the receiving antenna 9a of the receiver 9 disposed at the base end of the swivel 2 or the boom 3, and the boom-related operation control device 6 is controlled. I try to control.

A conventional radio control device for an aerial work vehicle of this type is capable of controlling a boom-related operation from a bucket 5 while operating between the distal end and the proximal end of the boom 3 for this control. Although there is an advantage that wiring for signal transmission is not required, the transmitter body 8a and the transmitting antenna 8
Since b is disposed on the pivotable bucket 5, the bucket 5 or the boom 3 is located between the transmitting antenna 8b and the receiving antenna 9a depending on the horizontal turning position of the bucket 5, and the transmission of the operation signal is accurate. There was a problem that was not. In order to cope with this problem, it is conceivable to mount the transmitting antenna 8b at an appropriate position at the end of the boom where the receiving antenna 9a can be seen, but in this case, the transmitting antenna 8b The wiring connecting the container body 8a and the transmitting antenna 8b is a bucket 5
It is necessary to attach a rotary joint (slip ring) in the middle of the wiring so as not to be twisted by the horizontal turning motion of the wire. However, if a rotary joint (slip ring) is interposed in the wiring connecting the transmitter body 8a and the transmission antenna 8b, noise is generated in the transmitted radio wave, and this noise hinders transmission of an accurate operation signal.

[0004]

In the present invention, the transmitting antenna 8b of the transmitter 8 is mounted at an appropriate position at the end of the boom where the receiving antenna 9a can be seen, while the transmitting antenna 8b is located between the transmitter main body 8a and the transmitting antenna 8b. To provide a new radio control device for an aerial work platform capable of directly connecting the vehicle without a rotating joint (slip ring), thereby solving the above-mentioned problems of the prior art. Things.

[0005]

In order to achieve the above-mentioned object, the radio control device of the aerial work vehicle according to the present invention is arranged such that the base ends of the transmitter body 8a and the transmitting antenna 8b are connected to the horizontal slewing bearing 4. The base end of the transmitting antenna 8b is connected to the tip of the boom so that the transmitting antenna 8b is located at a proper position at the tip end of the boom at a position where the receiving antenna 9a can be seen through, while being connected with a flexible shield wire passing through the center of rotation. It was constructed so that it could be twisted to the right place.

[0006]

The radio control apparatus for an aerial work vehicle constructed as described above has a transmitter body 8a arranged in the bucket 5.
The flexible shielded wire connecting the transmission antenna 8b and the boom 3 at the proper position at the tip of the boom 3 is twisted following the horizontal swinging movement of the bucket 5, but this twist is caused by the proximal end. Is eliminated by the rotation of the transmitting antenna 8b rotatably attached to the tip of the boom 3. Therefore, the transmitter body 8a on the bucket 5 and the boom 3
The transmitting antenna 8b at the appropriate position at the tip can be directly connected without using a rotating joint (slip ring).

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a radio control apparatus for an aerial work vehicle according to the present invention will be described below with reference to FIG. This invention is different from the conventional radio control device shown in FIG. 1 and described above in that the arrangement position and arrangement of the transmitting antenna 8b and the transmitting antenna
Since there is a characteristic in a passage route of the wiring connecting the transmitter b and the transmitter main body 8a on the bucket 5, the above-mentioned reference numerals except for this point are used as the same in the following description.

As shown in FIG. 2, in the radio control apparatus of the aerial work vehicle of the present invention, the transmitter body 8a of the transmitter 8 is used.
Are arranged on the bucket 5 similarly to the conventional one.
The transmitter body 8a and the transmitting antenna 8b are made of a flexible shielded wire passing through the center of rotation of the horizontal swivel bearing 4 of the bucket 5.
10 and this transmitting antenna 8b
The transmitting antenna 8b is located at a proper position at the end of the boom at a position where the receiving antenna 9a (in this embodiment, attached to one side of the base end of the boom 3) can be seen (in this embodiment, the swivel base 2). Attached to one side of
To this end, the base end of the transmission antenna 8b is attached to an appropriate position at the tip of the boom 3 so as to be twisted.

According to the above configuration, the flexible shielded wire 10 connecting the transmitter main body 8a arranged on the bucket 5 and the transmitting antenna 8b arranged on the tip of the boom 3 makes the horizontal swing of the bucket 5 possible. The torsion is twisted following the movement, but the torsion is eliminated by the rotation of the transmitting antenna 8b attached to a proper position at the tip of the boom 3 so that the base end thereof is rotatable. Therefore, the transmitter body 8a on the bucket 5 and the transmitting antenna 8 attached to the tip of the boom 3
b can be directly connected without a rotating joint (slip ring).

[0010]

The radio control apparatus for the aerial work vehicle of the present invention configured as described above has the transmitter antenna 8b attached to a proper position of the boom tip at a position where the reception antenna 9a can be seen. Main body 8a and transmitting antenna 8
Since b can be directly connected without interposing a rotary joint (slip ring), a more reliable wireless control device can be provided as compared with the conventional one.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a conventional radio control device for a work platform.

FIG. 2 is an explanatory view of the radio control device of the aerial work vehicle of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 vehicle 2 revolving base 3 boom 4 horizontal revolving bearing 5 bucket 6 boom-related operation control device 7 operating means 8 transmitter 8 a transmitter main body 8 b transmitting antenna 9 receiver 9 a receiving antenna 10 shielded wire

Claims (1)

(57) [Scope of request for utility model registration] 1. An aerial work vehicle having a boom mounted on a swivel table mounted on a vehicle so as to be capable of swinging drive, and a boom mounted on the vehicle so as to be able to swing up and down via a horizontal swing bearing at a tip of the boom. The radio control device used
When operating the boom-related operation control device arranged at the base end of the swivel or the boom with the operation means on the bucket, the operation signal of the operation means is converted into a radio signal on the bucket, and this is transmitted to the transmission antenna. A transmitter having a receiving antenna mounted on a base of the swivel or the boom, and operating the boom-related operation control device with an operation signal received by the receiver. In the above, the transmitter body and the base end of the transmission antenna are connected by a flexible shielded wire passing through the center of rotation of the horizontal slewing bearing, and the boom tip is positioned at a position where the reception antenna can be seen. A base station for the aerial work vehicle, wherein the base end of the transmission antenna is twistably mounted at an appropriate position at the tip of the boom so that the transmission antenna is located. Radio control device.