JPH0649865A - Radio control system for working vehicle - Google Patents

Abstract

PURPOSE:To provide a radio control system for working vehicle, which can be remote controlled at a distance sufficiently apart without being restricted by the reach of radio waves. CONSTITUTION:A signal cable 5 connects a transmitter 4 to a control panel 2 having an operation lever 3 which is gripped by an operator 1. A receiver 11 is mounted on a hydraulic power shovel 10 of a working vehicle concerned. When the operator 1 turns the lever 3, the transmitter 4 transmits a command signal by radio, and the receiver 11 of the power shovel 10 receives the command signal and the power shovel works in conformity to the command. The distance between the transmitter 4 and power shovel 10 must be within the reach of radio waves, but the operator 1 is allowed to stand apart from the transmitter 4 for the length of the signal cable 5. Therefore, the distance between the operator and power shovel 10 can be put apart sufficiently by setting off the length of the cable 5 large without being restricted by the reach of radio waves.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio control system for a construction vehicle such as a bulldozer or a hydraulic power shovel which is remotely controlled by using a radio control device.

[0002]

2. Description of the Related Art Conventionally, a work vehicle is operated under a dangerous working condition, a working environment that is harmful to the human body such as a toxic gas or a radiation atmosphere, or a severe environmental condition such as high temperature or water that is difficult for a person to approach. In this case, a radio control device is used for remote control to ensure the safety of the operator.

FIG. 6 is a block diagram of a conventional radio control system for a hydraulic excavator, in which an operator 1 has a control panel having an operating lever 3 and a transmitter 2.
It has a control box 20 which is integrated with 1. A receiver 11 is mounted on the hydraulic power shovel 10.

The operator 1 controls the control box 20.
When the operating lever 3 is operated, a command signal is wirelessly transmitted from the transmitter 21. The receiver 11 of the hydraulic power shovel 10 receives the command signal, and operates the traveling device and the working device via the control device according to the command of the operator 1.

[0005]

As a condition for utilizing radio control, an operator must control the machine from a safe and comfortable environment sufficiently away from the work machine. However, in general, there are two types of radio waves permitted by the private sector, such as construction machinery, that are not permitted or used under some conditions under the Radio Law, and the practical reach of these radio waves is several tens of meters. To about 100 meters, the distance is short and insufficient for the radio control requirements.

The present invention has been made in view of the above-mentioned problems, and provides a radio control system for a work vehicle, which enables an operator to remotely control the operator in a safe and comfortable environment where the operator is sufficiently away from the machine. It is an object.

[0007]

[Means for Solving the Problems] To achieve the above object,
In a first invention of a radio control system for a work vehicle according to the present invention, an operator operates a control panel to transmit a command signal from a transmitter, the command signal is received by a receiver mounted on the vehicle, and a command is issued. In a radio control system for a work vehicle that operates a vehicle according to a signal, the control panel, the transmitter,
A signal cable for connecting the control panel and the transmitter is provided, and in the second invention, an operator operates the control panel to transmit a command signal from the transmitter, and the command signal is transmitted. In a radio control system of a work vehicle, which receives a command from a receiver mounted on a vehicle and operates the vehicle according to a command signal, the control panel receives the command signal from the transmitter and the transmitter and mounts the vehicle on the vehicle. And an intermediate transmitter / receiver for transmitting a command signal to the receiver.

[0008]

According to the above construction, in the radio control system for the working vehicle, in the first invention, the control panel and the transmitter are connected by the signal cable, so that the transmitter is located at a position away from the control panel. It can be arranged, and the distance between the operator and the work vehicle can be increased.

In the second aspect of the invention, since the intermediate transmitter / receiver is provided between the transmitter and the receiver mounted on the vehicle, even if the distance between the operator's control panel and the work vehicle is increased, Can be transmitted to the vehicle receiver via the intermediate transceiver.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a radio control system for a work vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a radio control system, in which an operator 1 has a control panel 2 having an operating lever 3.

The hydraulic power shovel 10 is equipped with a receiver 11. A transmitter 4 is arranged between the operator 1 and the hydraulic power shovel 10 and is connected to the control panel 2 by a signal cable 5.

When the operator 1 operates the operation lever 3, the command signal is transmitted to the transmitter 4 by wire, and the transmitter 4 wirelessly transmits the command signal. Hydraulic excavator 1
0 receives a command signal from the receiver 11 and operates as commanded.

The distance between the transmitter 4 and the hydraulic power shovel 10 must be within the range of radio waves, but the distance between the control panel 2 and the transmitter 4 is determined by the length of the signal cable 5, and Since the length can be arbitrarily selected, the distance between the operator 1 and the hydraulic excavator 10 can be made sufficiently large.

FIG. 2 is a second radio control system.
It is a figure which shows an Example, and the transmitter 4 is a self-propelled thing which has the traveling device 6, and when installing the transmitter 4 in a dangerous area, a person does not need to go into a dangerous area.

FIG. 3 is a diagram showing a third embodiment, in which a transmitter 4 mounted on a lower traveling body 12 of a hydraulic power shovel 10 and a control panel 2 are connected by a signal cable 5. In this case, the upper revolving structure is revolvable and can be used for work that does not travel much, and it is not necessary for a person to install the transmitter 4 in the dangerous area.

FIG. 4 shows a fourth embodiment in which an operator 1 has a control panel having an operating lever 3 and a transmitter 21.
The control box 20 is integrated with the hydraulic excavator 10 and the intermediate transmitter / receiver 22 is installed in the middle of the control box 20.

When the operator 1 operates the operation lever 3, a command signal is transmitted from the transmitter 21, and the intermediate transmitter / receiver 22
Receives the command signal and transmits the command signal again, and the hydraulic excavator 10 receives the command signal by the receiver 11,
Operates as directed.

FIG. 5 shows a fifth embodiment in which the system of the first embodiment and the system of the fourth embodiment are used in combination. An operator 1 has a control panel 2, a control panel 2 and a transmitter 4. Are connected by a signal cable 5, and an intermediate transmitter / receiver 22 is installed between the transmitter 4 and the hydraulic power shovel 10.

[0019]

As described above, in the radio control system for the working vehicle, in the first invention, the transmitter connected to the control panel operated by the operator by the signal cable is provided, so that the distance between the operator and the working vehicle is reduced. It can be increased by the length of the signal cable.

In the second aspect of the invention, since the control panel operated by the operator and the intermediate transmitter / receiver are provided between the transmitter and the work vehicle, it is possible to increase the distance between the operator and the work vehicle even though the radio wave reaching distance is short. it can.

Therefore, it is possible to obtain a radio control system for a working vehicle, which allows the operator to remotely control from a place which is sufficiently distant from the working vehicle and is safe and under favorable environmental conditions, without being restricted by the radio wave reaching distance.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of a radio control system of the present invention.

FIG. 2 is a configuration diagram of a second embodiment of the radio control system of the present invention.

FIG. 3 is a configuration diagram of a third embodiment of the radio control system of the present invention.

FIG. 4 is a configuration diagram of a fourth embodiment of the radio control system of the present invention.

FIG. 5 is a configuration diagram of a fifth embodiment of the radio control system of the present invention.

FIG. 6 is a configuration diagram of a conventional radio control system.

[Explanation of symbols]

 1 Operator 2 Control Panel 3 Operation Lever 4, 21 Transmitter 5 Signal Cable 6 Traveling Device 10 Hydraulic Excavator 11 Receiver 12 Undercarriage 20 Control Box 22 Intermediate Transceiver

Claims (2)

[Claims] 1. A radio control system for a working vehicle, wherein an operator operates a control panel to transmit a command signal from a transmitter, the command signal is received by a receiver mounted on the vehicle, and the vehicle is operated in accordance with the command signal. A radio control system for a work vehicle, comprising: the control panel, the transmitter, and a signal cable connecting the control panel and the transmitter. 2. A radio control system for a working vehicle, wherein an operator operates a control panel to transmit a command signal from a transmitter, the command signal is received by a receiver mounted on the vehicle, and the vehicle is operated in accordance with the command signal. A work vehicle comprising: the control panel, the transmitter, and an intermediate transceiver that receives a command signal from the transmitter and transmits the command signal to a receiver mounted on the vehicle. Radio control system.