JPH083445Y2 - Dump truck guidance device for pavement construction vehicles - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dump truck guide device in a pavement construction vehicle that guides a dump truck moving backward to transfer an asphalt mixture onto an asphalt finisher.

[0002]

2. Description of the Related Art In order to supply an asphalt mixture to an asphalt finisher during paving work, a dump truck is retracted and brought close to a hopper of the asphalt finisher, and the dump truck is once placed at a predetermined distance from the asphalt finisher. After stopping, the asphalt mixture is transferred from the dump truck to the asphalt finisher. Conventionally, in this work, a worker sends a signal to the operator of the dump truck to guide the operator to guide the dump truck to a correct position.

[0003]

However, the above-mentioned conventional guiding method has a disadvantage that it is labor-intensive and the work is troublesome. In addition, there is a large individual difference in the guidance depending on the worker, and due to improper guidance, the dump truck collides with the asphalt finisher and the vehicle is damaged,
There was also concern about scratching the pavement.

The present invention has been made in view of the above circumstances, and guides a dump truck accurately and easily,
An object of the present invention is to provide a guidance device for a dump truck in a pavement construction vehicle that can save labor in the guidance work.

[0005]

In order to achieve the above-mentioned object, the present invention detects the position of a dump truck moving backward to transfer the asphalt mixture to the asphalt finisher. The detector and the transmitter for transmitting the output information of the detector are mounted, and the dump truck is equipped with the receiver for receiving the signal transmitted from the transmitter.

[0006]

The detecting device mounted on the asphalt finisher detects the position of the dump truck retracting to transfer the asphalt mixture onto the asphalt finisher, and the transmitter transmits the output information from the detecting device.
On the other hand, the receiver mounted on the dump truck receives the output information from the transmitter.

The operator of the dump truck knows the position of the dump truck with respect to the asphalt finisher based on the reception output of the receiver. When the dump truck is in the proper position with respect to the asphalt finisher, the operation is continued as it is, and when it is not in the proper position. Correct the moving direction and stop the dump truck correctly at a predetermined position in front of the asphalt finisher.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a guidance device for a dump truck according to the present invention, in which reference numeral 1 is an asphalt finisher. Asphalt finisher 1 has driver's seat 2
A hopper 5 for accommodating the asphalt mixture transferred from the dump truck 4 on the traveling carriage 3 operated in the above, and a screw for spreading the asphalt mixture sent from the hopper 5 by a bar feeder (not shown) to the left and right. 6 and a pair of left and right screeds 7 for spreading the asphalt mixture spread by the screw 6 on the road surface.

A pair of sensors 8a and 8b are installed at symmetrical positions at the front end of the traveling carriage 3 of the asphalt finisher 1. The sensors 8a and 8b are sensors such as ultrasonic sensors and laser sensors. The sensors 8a and 8b emit detection waves such as ultrasonic waves and lasers toward the dump truck 4 and receive the reflected waves thereof to thereby receive the asphalt finisher 1 and the dump truck. The distance from 4 is measured.
Further, the traveling vehicle 3 is equipped with a transmitter 9 which transmits a signal obtained by processing the detection results of the sensors 8a and 8b by a signal processing unit described later by a frequency modulation method. In addition,
In the figure, reference numeral 10 is an antenna for transmitting radio waves.

On the other hand, the dump truck 4 can discharge the loaded asphalt mixture by inclining the bed 11. Further, the dump truck 4 receives an electric wave transmitted from the asphalt finisher 1 side by an antenna 12
A receiver 13 for receiving the received signal and outputting the received signal as a voice or sound signal is mounted. In addition, this receiver 13
Is installed in the driver's seat 14 of the dump truck 4.

FIG. 2 is a block diagram showing the construction of the guiding device mounted on the asphalt finisher 1 and the dump truck 4. The left and right sensors 8a and 8b detect the distance between the asphalt finisher 1 and the dump truck 4, respectively. The detection result is supplied to the signal processing unit 15. In the signal processing unit 15, based on the detection results of the left and right sensors 8a and 8b, the asphalt finisher 1 and the dump truck 4
And a position signal indicating a lateral position shift of the dump truck 4 with respect to the center position of the asphalt finisher 1 are detected.

The distance signal is obtained by the left and right sensors 8a and 8b.
When the detection result of is sampled every second, for example, the shorter distance is the asphalt finisher 1 and the dump truck 4.
Is extracted as a signal indicating the distance between the distance and the distance signal. After that, the distance signal is converted into a voice signal in which the distance value is directly represented by a specific numerical value.

The position signal is sent to the left and right sensors 8
When the displacement of the dump truck 4 to the right side is detected when the detection results of a and 8b are sampled, the frequency f ₁ H
z, frequency f ₂ Hz when a shift to the left is detected
, Which are generated as different sound signals depending on the deviation direction. It should be noted that the frequencies f ₁ and f ₂ are set to frequencies at which a person can easily distinguish.

Next, the voice signal and the sound signal processed by the signal processing unit 15 are superimposed and input to the transmitter 9. Further, the transmitter 9 converts the signal into a radio wave by a frequency modulation method and transmits the radio wave through the antenna 10. On the other hand, the receiver 13 mounted on the dump truck 4
After the radio wave is received by the antenna 12, the radio wave is converted into a voice signal and a sound signal, and the distance between the asphalt finisher 1 and the dump truck 4 and the left and right position shifts of the dump truck 1 are converted with voices or sounds that can be heard by the operator of the dump truck 4, respectively. The detection result of is output.

Next, the procedure for transferring the asphalt mixture in the asphalt finisher 1 and the dump truck 4 equipped with the above-described guiding device will be described. First, as a preparation for guidance, the dump truck 4 is stopped at a remote position in front of the asphalt finisher 1 and the guidance device is turned on. Then, the left and right sensors 8a and 8b of the asphalt finisher 1 start measuring the distance between the asphalt finisher 1 and the dump truck 4, and the detection result is processed by the signal processing unit 15 and then transmitted from the transmitter 9.
The receiver 13 of the dump truck 4 receives this signal and outputs this result by voice. Therefore, the operator of the dump truck 4 moves the dump truck 4 backward while gradually listening to the measurement result of the distance output from the receiver 13 and gradually approaches the asphalt finisher 1.

As long as there is no lateral displacement of the dump truck 4 with respect to the center position of the asphalt finisher 1, a sound signal indicating the state of the displacement is not generated, so the operator of the dump truck 4 operates the position of a handle (not shown). , The dump truck 4 continues to move backward while appropriately controlling the reverse speed, and when the distance between the asphalt finisher 1 and the dump truck 4 reaches a predetermined distance, the dump truck 4
To stop.

If the dump truck 4 shifts to the left or right with respect to the center position of the asphalt finisher 1 while the dump truck 4 is being retracted, a sound of a certain height is generated at the same time as a voice notifying the distance between the asphalt finisher 1 and the dump truck 4. Begins to be heard. When the operator of the dump truck 4 hears the sound of the frequency f ₁ , the operator of the dump truck 4
Is perceived to be shifted to the right, and when the sound of frequency f ₂ is heard, it is perceived that the dump truck 4 is shifted to the left. Therefore, the handle (not shown) is adjusted accordingly and the sound is heard. Correct the displacement of the dump truck 4 until it disappears. When it is determined that the operator of the dump truck 4 cannot correct the positional deviation during the backward movement, the forward movement of the dump truck 4 is once performed and the backward movement is performed again to correct the positional deviation.

According to the above method, the dump truck 4 can be reliably guided to a predetermined position in front of the asphalt finisher 1. After that, the loading platform 11 of the dump truck 4 is tilted to move the asphalt mixture to the asphalt finisher 1. Can be transferred to the hopper 5.

In the present embodiment, since the operator of the dump truck 4 can know the distance between the asphalt finisher 1 and the dump truck 4 with a specific numerical value by voice, it is necessary to intuitively grasp the approaching distance. Therefore, the retreat speed can be appropriately controlled. Also,
When the dump truck 4 shifts to the left and right, different pitch sounds are generated when the dump truck 4 shifts to the right and left, so that the operator of the dump truck 4 can know in which direction the shift has occurred. . Furthermore, since the operator of the dump truck 4 can immediately perceive the occurrence of the left / right positional deviation, there is an advantage that the positional deviation can be corrected early.

In the above embodiment, the left and right sensors 8
The distance signal and the position signal detected by a and 8b are configured to be transmitted by the voice signal and the sound signal, but instead of this configuration, the position of the dump truck 4 may be detected as an image signal and transmitted. . In this case, a CCD camera is used as a device for detecting the position of the dump truck 4, and an output signal from the CCD camera is sent to the transmitter 9 through the image processing unit. On the other hand, the receiver 1 of the dump truck 4
3 is equipped with a display screen for displaying an image.

In the above embodiment, the detection result processed by the signal processing unit 15 is internally converted into a voice signal and a sound signal. However, the detection result is temporarily changed to this structure. Driver's seat 2 on the asphalt finisher 1
Alternatively, the voice of the operator of the asphalt finisher 1 may be displayed as a voice signal to notify the detection result. In this case, the driver's seat 2 of the asphalt finisher 1 is provided with a display screen for displaying the detection result and a microphone.

[0022]

EFFECT OF THE INVENTION The dump truck guiding apparatus for a pavement construction vehicle according to the present invention is equipped with a detection apparatus for detecting the position of the dump truck and a transmitter for transmitting the output information of the detection apparatus to the asphalt finisher. Since the receiver is equipped with a receiver that receives the signal transmitted from the transmitter, the operator of the dump truck can know the position of the dump truck relative to the asphalt finisher in the driver's seat momentarily, and no worker is required to guide the dump truck. Becomes That is, when guiding the dump truck, there is no individual difference among workers, and the operator of the dump truck can accurately know the position of the dump truck. Therefore, the guide device of the dump truck can easily guide the dump truck to an appropriate position, so that the pavement work can be safely performed and the labor of the work can be saved.

[Brief description of drawings]

FIG. 1 is a side view of an asphalt finisher and a dump truck equipped with a dump truck guide apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the guiding device.

[Explanation of symbols]

 1 Asphalt finisher 4 Dump truck 8a, 8b Sensor 9 Transmitter 13 Receiver

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000194516 Century Tokyu Industries Co., Ltd. 2-9-3 Shiba-koen, Minato-ku, Tokyo (71) Applicant 390002185 3-13-1 Kyobashi, Chuo-ku, Tokyo (71) Applicant 000232508 Nippon Road Co., Ltd. 1-6-5 Shimbashi, Minato-ku, Tokyo (71) Applicant 590002482 Nippon Rimido Co., Ltd. 1-19-11 Kyobashi, Chuo-ku, Tokyo (71) Applicant 000003931 Co., Ltd. Niigata Iron Works 1-10-1, Kamatahonmachi, Ota-ku, Tokyo (72) Inventor Hachiro Ikeda 3-6-1 Sakuragi, Tagajo City, Miyagi Prefecture Tohoku Regional Construction Bureau Tohoku Engineering Office (72) Inventor Noriaki Miyamoto 3-6-1, Sakuragi, Tagajo City, Miyagi Prefecture, Tohoku District Construction Bureau, Ministry of Construction, Tohoku Technical Office (72) Creator Ryoei Umeda Oto, Bunkyo-ku, Tokyo 2-chome No. 10-2 Inside the Foundation's Advanced Construction Technology Center (72) Inventor Eisaku Anzai 663 Kagamibushi, Kadoma City, Osaka Prefecture Obayashi Road Co., Ltd. Inside the Osaka Machinery Factory (72) Inventor Mitsuo Fukukawa Chiyoda, Tokyo 5-3 Kojimachi, Koji-ku, Kashima Road Co., Ltd. (72) Inventor Koue Masuyama 2-9-3 Shiba Park, Minato-ku, Tokyo Century Tokyu Industries Co., Ltd. (72) Inventor Shoji Kinoshita Saitama Prefecture 1456 Uenoya, Konosu-shi Daisei Rotec Co., Ltd. Technical Research Institute (72) Inventor Yukio Takagi 2-11-20 Tamagawa, Ota-ku, Tokyo Inside Japan Technology Co., Ltd. (72) Tomohiro Gomachi 6 Mitsuhashi, Omiya, Saitama Prefecture 70-chome, Nihon Rimido Co., Ltd., General Engineering Department (72) Creator Fumio Goto, 730, Gunma-cho, Gunma-gun, Gunma-gun, Takasaki Plant, Niigata Iron Works Co., Ltd. (72) 730, Akio Ishii Gunma-gun, Gunma-gun, Gunma-cho Bacca Co., Ltd. Niigata Iron Works Takasaki Plant (72) Inventor Satoshi Ogawa Gunma-gun Gunma-gun Gunma-cho 730 Takara Factory Niigata Iron Works Co., Ltd. (72) Inventor Masaaki Saito 27 Shinisoko-cho, Isogo-ku, Yokohama-shi, Kanagawa Incorporated company Niigata Iron Works Yokohama Development Center (72) devised Person Hamano Mami 27 Shinisogo-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Niigata Iron Works Co., Ltd. Yokohama Development Center (56) Bibliography 4-122711 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A guidance device for a dump truck in a pavement construction vehicle that transfers the asphalt mixture material loaded on a dump truck to an asphalt finisher, and spreads the asphalt mixture material in a construction area by the asphalt finisher to perform paving work. The asphalt finisher is equipped with a detection device that detects the position of the dump truck retracting to transfer the asphalt mixture to the asphalt finisher, and a transmitter that transmits the output information of this detection device. The dump truck guide device in a pavement construction vehicle, wherein the dump truck is equipped with a receiver for receiving a signal transmitted from the transmitter.