JPS6221654B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for a container handling vehicle.

Previously, Special Publication No. 49-45806 or Special Publication No.
As described in Publication No. 46-26682, there are so-called container handling vehicles that tilt containers mounted on the vehicle body to discharge their contents, or load and unload containers between the ground and the vehicle body. Are known.

In such a container handling vehicle, when discharging the garbage stored in the container to the garbage processing equipment, if the container is operated to the unloading position by mistake, the container will move in the direction in which it will fall into the garbage processing equipment, causing the center of gravity to drop. may move backwards and cause the vehicle to overturn.

The present invention has been made in view of the above drawbacks.
A sensing device is installed at the rear end of the vehicle body to detect a certain height above the ground, and a detection device is also installed to detect backward movement of the container relative to the vehicle body, to prevent the container from being unloaded somewhere other than the ground. It is.

Hereinafter, embodiments of the present invention will be described based on the drawings. Reference numeral 1 denotes a container cargo handling vehicle, in which a tilting frame 3 is pivotably supported at the rear end of a vehicle body 2, and
An L-shaped frame 4 is provided that is rotatable and slidable rearward relative to the tilting frame 3, and a hook 4' provided at the upper end of the L-shaped frame 4 connects to a locking portion 5 provided on the front wall of the container 5. '.

A rear fan door 6 is pivotally attached to the rear end opening of the container 5 with its upper end as the center of rotation, and although not described in detail, hydraulic cylinders 7 and 7 disposed on the vehicle body 2 and the L-shaped frame 4 By individually or sequentially expanding and contracting the hydraulic cylinders 8 disposed on the L-shaped frame and the tilting frame 3, the tilting frame 3
and a container tilting operation in which the L-shaped frame 4 rotates integrally with respect to the vehicle body 2 (position shown by the two-dot chain line in FIG. 1);
After the L-shaped frame 4 moves slightly backward horizontally,
It is possible to select a container unloading operation in which the mold frame 4 rotates relative to the tilting frame 3 (position shown by the dashed line in FIG. 1).

By the way, the rear end of the vehicle body 2 normally emits infrared rays, sound waves, etc. toward the ground, and if it detects a distance below a certain level, the contact point is opened, but if it detects a distance above a certain point, the contact point opens. A sensing device S is provided for closing. In the embodiment, when the garbage contained in the container 5 is discharged from the rear opening into the garbage treatment equipment P, the sensing device S faces into the garbage treatment equipment P, detects a distance of a certain distance or more, and closes its contact. It is something to do.

In addition, a detection device LS such as a limit switch that detects the horizontal backward movement of the container 5 is installed at a suitable location on the vehicle body 2.
is arranged, and a dog (not shown) provided at a suitable position in the container 5 is configured to close the detection device LS.

On the other hand, to explain the control circuit including the sensing device S and the sensing device LS with reference to FIG.
When LS detects horizontal backward movement of container 5,
The pilot lamp L located inside the driver's seat lights up. At this time, if the sensing device S is detecting the ground, the contact of the sensing device S is open, but
When a distance of a certain distance or more is detected, for example, when facing inside the garbage processing facility P, the contact is closed. Therefore, in that case, a time-limited relay
TR is energized, and its b contact tr is closed until a certain period of time has elapsed, energizing relay CR. When relay CR is energized, its contacts CR are closed and the horn is turned off.
The BZ will sound to alert the worker. After a certain period of time has elapsed, the b contact tr is opened and the sounding of the horn BZ is stopped. SW is the switch for the crankshaft BZ, and B is the power source for the car battery.

By the way, in this embodiment, when the sensing device S and the sensing device LS are closed, the crankshaft
Although the BZ is configured to sound, other embodiments may be used, such as activating a safety valve (not shown) or interrupting the unloading operation by disconnecting the power take-off device.

Further, although the container cargo handling vehicle of this embodiment is shown as being composed of a tilting frame pivotally mounted on the vehicle body so as to be tiltable, and an L-shaped frame that is slidable and tiltable with respect to the tilting frame, other An example of this is a cargo handling system in which a tilting frame is pivotably mounted on the vehicle body and a winch is mounted on the front end, and a container mounted on the vehicle body is unloaded via a rope wound around the winch. It may be a vehicle.

As described above, the present invention includes a sensing device provided at the rear end of the vehicle body and a sensing device for detecting horizontal backward movement of the container, thereby reliably preventing erroneous operations such as unloading the container to a position where there is no ground. be able to.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall side view of a container cargo handling vehicle, and FIG. 2 is a control circuit diagram. 1...Container cargo handling vehicle, 5...Container, S
...sensing device, LS...detecting device.

Claims (1)

[Scope of Claims] 1. A container cargo handling vehicle in which a container mounted on the vehicle body can be selected between a loading/unloading position and a tilting position, is provided with a sensing device at the rear end of the vehicle body to detect a certain height from the ground; A safety device for a container cargo handling vehicle, characterized in that a detection device is provided to detect backward movement of the container with respect to the vehicle body, and an alarm device is activated in response to the detection results of the detection device and the detection device. 2. The safety device for a container cargo handling vehicle according to claim 1, wherein the warning device is a vehicle horn.