JP2581966Y2 - Crane truck safety traveling equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safe traveling device for a mobile crane having an arm which can be selectively located in a stowed position or a non-stowed position.

[0002]

2. Description of the Related Art In order to prevent an accident in which a crane truck travels with an arm raised and collides with a structure to cause damage, the applicant has made a Japanese Utility Model Application Laid-Open No. 63-15580.
Japanese Patent Application Laid-Open No. 8 (Kokai) No. 8 discloses a technique for stopping a crane operation by a signal of a switch that detects operation of the crane during traveling.

[0003] However, in the above-mentioned technology, since the vehicle is stopped after detecting whether or not the crane is operating after the vehicle travels, there is a problem that it is insufficient in terms of safety management. Further, Japanese Utility Model Laid-Open No. 62-92288 discloses a technology that includes a sensor that detects the storage of a crane boom and a sensor that detects a shift of a transmission to a neutral position, and notifies a warning device. I have. However, this technique has the disadvantages that the reliability of sensor detection is insufficient, and that it is operated by a switch directly without a control device, so that it is inferior in application and cannot be stopped. I have.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a crane vehicle which, even when the crane is not in operation, causes an alarm to be generated or the vehicle to stop running when the crane attempts to travel with the crane in the non-storage position. The purpose of the present invention is to provide a safe driving device.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a crane truck safety traveling apparatus having an arm (A) which can be selectively located at a stowed position or a non-stowed position. A first sensor (1) for detecting that the vehicle is in the non-storage position, a second sensor (2) attached to the side brake for detecting release of the side brake, and an alarm device (3). Two sensors (1, 2)
And a control device (4) operated by a signal of the second sensor (2). The control device (4) determines whether or not the side brake is released by a signal of the second sensor (2). ) Is turned on or not, and if YES, the alarm device (3) is activated, and after a predetermined time has elapsed, the alarm device (3) is stopped. Furthermore, according to the present invention, in a safe traveling device for a crane vehicle equipped with an arm (A) that can be selectively located in a stowed position or a non-stowed position, the arm (A) is in the non-stowed position. A first sensor (1) for detecting a vehicle brake, a second sensor (2) attached to a side brake for detecting release of the side brake, and a vehicle travel stop device (5).
And a control device (4) operated by a signal from the second sensor (1, 2), and the control device (4) determines whether or not the side brake is released based on a signal from the second sensor (2). If YES, the signal of the first sensor (1) is ON
It has a function of activating the vehicle traveling stop device (5) if YES is determined.

[0006]

In the safety traveling device for a crane vehicle constructed as described above, when the operation is stopped while the crane arm is raised, the first sensor detects the non-retracted position of the arm, and When the side brake is released to run the vehicle, the second sensor detects the signal, and signals from the first and second sensors are input to the control device to activate the alarm device and / or the vehicle travel stop device. Let it. Therefore, traveling with the arm raised is prevented, and safety is ensured.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a schematic structural view of a safe traveling device of a crane truck embodying the present invention, showing a state in which an arm A is located at a retracted position. In the figure, the present safety traveling device comprises a first sensor as an ascending switch, a second sensor as a side brake switch 2, an alarm device 3, a control device 4, and the like. The ascending switch 1 is for urging a hydraulic mechanism (not shown), and is turned on when the arm A is placed in a operable state, that is, in a non-storage position, and is placed in a stowable storage position. When it is OFF. The side brake switch 2 is provided at the base end of the side brake S and is turned on when the vehicle is in the release position, that is, in the vehicle running state, and is off when the vehicle is in the non-release position, that is, when the crane is in the working state. The alarm device 3 is arranged, for example, on an instrument panel, and informs the driver by a buzzer, a sound, or a lamp. The control device 4
It is composed of an electric circuit including a CPU, and is connected to the ascending switch 1, the side brake switch 2, and the alarm device 3 by wiring.

Next, the operation of the safe traveling device for a crane truck according to the present invention will be described with reference to FIGS.
In the figure, the control device 4 determines whether or not the side brake S is released based on a signal from the side brake switch 2 at the time of operation (step S1). If YES, it is determined whether the ascending switch 1 is ON (step S2). Y
If it is ES, the control device 4 activates the alarm device 3 to sound a buzzer, generate a sound or light a lamp (step S3), and turns off the alarm device 3 several seconds after the alarm device 3 is activated (step 4). ). Step S1
If step S2 is NO, the controller 4
Does not operate the alarm device 3 and the vehicle can travel safely.

In the present embodiment, the control device 4 activates the alarm device 3, but in FIGS. 4 and 5, the control device 4 activates the vehicle travel stop device 5 instead of the alarm device 3. The vehicle travel stop device 5 may be, for example, a known device that cuts the fuel injection amount in conjunction with a rack bar that adjusts the fuel injection amount, or a device that locks the parking position in conjunction with a transmission. The operation in this case is as follows. As a result of the determination of whether or not the side brake S is released by the steps S1 and S2 and whether or not the raising switch 1 is ON, if both are YES, the control device 4 activates the vehicle stopping device 5. Then, the vehicle is prevented from running (step S5).

Further, according to the present invention, the combined use of the alarm device 3 and the vehicle stop device 5 is not a problem at all, but is preferable in terms of safety management.

In the above description, the raising switch 1 detects whether or not the arm A is located at the non-storage position. However, the present invention is not limited to this. The distance from an immovable base point such as the above may be detected. Therefore, the crane truck does not travel while the arm A is located at the non-storage position.

[0013]

[Effects of the Invention] The present invention is configured as described above and has the following effects. (A) If the crane arm is raised and the user tries to travel without being in the stowed position, a warning is issued and an accident such as the arm colliding with a structure can be prevented. (B) The prevention of the above-mentioned accidents can be prevented more safely by equipping the vehicle with a vehicle stop device, and the safety can be further improved. (C) Even if an attempt is made to perform a crane operation in a state where the braking by the side brake is incomplete, an alarm is issued, so that it is safe.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

FIG. 2 is a control system diagram of the present invention.

FIG. 3 is a flowchart of the control of the present invention.

FIG. 4 is another control system diagram of the present invention.

FIG. 5 is a flowchart of another control according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ascending switch which is a 1st sensor 2 ... Side brake switch which is a 2nd sensor 3 ... Alarm device 4 ... Control device 5 ... Vehicle travel stop device

Claims (2)

(57) [Scope of request for utility model registration] 1. A safe traveling device for a crane vehicle having an arm (A) that can be selectively located at a stowed position or a non-stowed position, wherein the arm (A) is detected to be at a non-stowed position. The first sensor (1), the second sensor (2) attached to the side brake for detecting the release of the side brake, and the alarm device (3) are connected to the first and second sensors.
And a control device (4) operated by a signal of the sensor (1, 2), and the control device (4) determines whether or not the side brake is released by a signal of the second sensor (2), and YES If the signal of the first sensor (1) is ON, it is determined whether or not the signal is ON, and if YES, the alarm device (3) is activated, and the alarm device (3) is stopped after a predetermined time has elapsed. A safe traveling device for a crane truck. 2. A safe traveling device for a mobile crane equipped with an arm (A) that can be selectively located in a stowed position or a non-stowed position, wherein it is detected that the arm (A) is in a non-stowed position. The first sensor (1), the second sensor (2) attached to the side brake for detecting the release of the side brake, and the vehicle travel stop device (5) are connected to the first sensor (1).
And a control device (4) operated by a signal from the second sensor (1, 2), and the control device (4) determines whether or not the side brake is released based on a signal from the second sensor (2). If YES, the signal of the first sensor (1) is ON
A safe traveling device for a crane vehicle, having a function of activating a vehicle traveling stop device (5) if YES is determined.