JP2003104118A - Device for confirming engagement with container of container cargo vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for confirming engagement with a container of a container cargo vehicle allowing securely confirming engagement between a hook and an engagement pin and dispensing with operation by an operator by electrically connecting on the basis of an operating state of a cargo device regardless of the surrounding state. SOLUTION: An engagement detection device 4 for detecting an engagement state when the hook 23 is engaged with the container C is fixed to a slide arm 22 and a moving side contact 6 electrically connected with the engagement detection device 4 is fixed to the horizontal section 22a. A fixed side contact 7 electrically connected to a power supply and connected to the moving side contact 6 when the slide arm 22 contracts for an outer arm 21 at the time of unloading of the container C is fixed to the outer arm 21. A notifying means 3 for notifying the operator that the hook 23 is engaged with the container C on the basis of detection of the engagement detection device 4 by connection between the moving side contact 6 and the fixed side contact 7 is fixed to the cargo device 2 or a car body 1 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container handling vehicle equipped with a cargo handling device for loading and unloading a container between a vehicle body and the ground, and more specifically, when engaging the cargo handling device with a container on the ground, The present invention relates to an engagement confirmation device for an operator to confirm this engagement state.

[0002]

2. Description of the Related Art Conventionally, a hook provided at the tip of a cargo handling device is engaged with an engaging pin of the container to load the container from the ground onto the vehicle body by the operation of the cargo handling device. A container handling vehicle has been offered for sale from the ground.

In such a container cargo handling vehicle, it is necessary to unload the container in a state where the hook of the cargo handling device is securely engaged with the engagement pin of the container for safety reasons. Therefore, when loading the container from the ground onto the vehicle body, it is necessary to perform the loading operation of the container after confirming that the hook of the cargo handling device is securely engaged with the engaging pin of the container.

Therefore, conventionally, as seen in Japanese Utility Model Publication No. 1-8435, a hook of a cargo handling device is provided with a rod-shaped or plate-shaped checking member so as to project the container from the ground onto the vehicle body. At the time of loading, the state of the checking member is visually checked to check whether the hook is securely engaged with the engaging pin.

[0005]

However, in the case where the confirmation member is provided on the hook as in the conventional case, the confirmation member can be visually observed in a good weather condition, but there is no problem.
In a situation where the confirmation member cannot be visually observed, such as when the weather is bad or at night, it is impossible to confirm whether or not the hook is securely engaged with the engagement pin. Therefore, in such a work in which the confirmation member cannot be visually inspected, the worker has to get off the driver's seat and check the engagement state between the hook and the engagement pin.

Further, when the hook and the engaging pin are engaged with each other, it is possible to notify the operator by detecting the engaged state and lighting the electrically connected lamp.
However, since the hook and the engagement pin are always engaged when the container is placed on the vehicle body, the lamp is turned on even when the vehicle is running, and it is wasted electric power. Become. Further, it is possible to provide a switch in the circuit for turning on the lamp and turn off the lamp when the vehicle is traveling, etc., but this requires a troublesome operation to turn the switch on and off one by one.

The present invention has been made in view of the above problems, and an object of the present invention is to reliably check the engagement between the hook and the engaging pin regardless of the surrounding conditions. By making an electrical connection based on the operating state of the cargo handling device, no operator operation is required,
An object of the present invention is to provide a device for confirming engagement with a container in a container-loaded vehicle.

[0008]

According to a first aspect of the present invention, there is provided a device for confirming engagement with a container in a container-loaded vehicle, comprising:
An outer arm whose rear end is rotatably supported in the front-rear direction on the rear end side of the vehicle body, and a horizontal part is telescopically inserted in the outer arm in the longitudinal direction thereof, and is detachable from the container at the front end. The loading / unloading device is configured by a telescopic arm in which a vertical part having various hooks is erected from the front end of the horizontal part and is formed in a substantially L shape as a whole, and after retracting the telescopic arm with respect to the outer arm, the outer arm In the container loading / unloading vehicle in which the container can be loaded and unloaded between the vehicle body and the ground by rotating the container in the front-rear direction, the telescopic arm engages with the hook when the hook engages with the container. An engagement detection device for detecting the state is provided,
A moving-side contact electrically connected to the engagement detection device is provided on the horizontal portion, and the outer arm is electrically connected to a power source and has a telescopic arm with respect to the outer arm when the container is unloaded. A fixed contact is provided which is connected to the moving contact when the operator contracts, while the cargo handling device or the vehicle body side is connected to the moving contact and the fixed contact based on the detection by the engagement detecting device. A notification means is provided to notify that the hook is engaged with the container.

The engagement confirmation device with the container in the container handling vehicle according to the second aspect of the present invention is such that the moving side contact is a spring type contact and the fixed side contact is a plate type contact.

In the device for confirming engagement with a container in the container cargo handling vehicle according to the third aspect of the present invention, the notifying means is:
It is a lamp or a buzzer.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall construction of a container-carrying vehicle, and FIG. 2 shows a container-carrying vehicle equipped with a container.

The container loading / unloading vehicle has a vehicle body 1 on which a container C is loaded and unloaded, and a loading / unloading device 2 for discharging a load in the container C.

The cargo handling device 2 includes an outer arm 21 which is horizontally arranged in a state where the container C is mounted (see FIG. 2) and a vertical portion 22b which is vertically arranged in the same state.
And an extendable arm 22 having an L-shape.

A rear end of the outer arm 21 has a vehicle body 1
It is rotatably supported near the rear part.

The telescopic arm 22 is the outer arm 21.
A horizontal portion 22a inserted into the inside and a vertical portion 22b standing upright from the front end of the horizontal portion 22a are formed in a substantially L shape, and the horizontal portion 22a is attached to the outer arm 21 by a telescopic cylinder (not shown). It can be expanded and contracted in the longitudinal direction.

The vertical portion 22b is provided at its tip with a hook 23 which can be engaged with and disengaged from an engaging pin C1 (see FIG. 2) provided on the container C.

A hoisting cylinder 24 (see FIGS. 4 to 6) is continuously provided between the outer arm 21 and the vehicle body 1, and the cargo handling device 2 is extended and retracted by the hoisting cylinder 24 extending and contracting. It is configured so as to be rotatable in the front-back direction around the center.

As the container C, an open type having an open upper surface, a closed type having a closed upper surface, or the like is used, and the rear wall thereof is openable / closable so that a load can be discharged. Further, the engaging pin C1 is provided on the upper portion of the front wall, the support leg C2 is provided on the front portion of the bottom surface, and the support roller C3 is provided on the rear portion of the bottom surface.

Further, a container C is provided at the rear end of the vehicle body 1.
A roller 11 is provided for smoothly loading and unloading the vehicle between the vehicle body 1 and the ground.

In loading and unloading of the container C by the container loading and unloading vehicle, first, with the container mounted as shown in FIG. 2, the horizontal portion 22a of the telescopic arm 22 is moved to the outer arm by the telescopic cylinder as shown in FIG. Then, the container C on the vehicle body 1 is slid backward by a predetermined length. Thereafter, as shown in FIG. 4, the hoisting cylinder 24 causes the entire cargo handling device 2 to rotate upward to tilt the container C. This allows the container C to be unloaded from above the vehicle body 1 to the ground as shown in FIG. The container C on the ground is loaded on the vehicle body 1 by the operation reverse to the above.

On the other hand, when discharging a load loaded in the container C, with the container C loaded on the vehicle body 1, the telescopic arm 22 is not retracted with respect to the outer arm 21. As shown in (1), the cargo handling device 2 is rotated upward to tilt the container C, so that the load in the container C is discharged.

By the way, as shown in FIG. 7, a lamp 3 as an informing means is provided near the hook 23 of the vertical portion 22b of the telescopic arm 22, and
A proximity switch 4 is provided as an engagement detection device that detects a state in which the hook 23 is engaged with the engagement pin C1 of the container C.

The lamp 3 is lit when the hook 23 is engaged with the engagement pin C1 by the proximity switch 4 to notify the operator of the state, and for example, a light emitting diode is used.

The proximity switch 4 is constructed so that it is turned on when one end 41a of the proximity switch 4 approaches due to the rotation of the operation piece 41 provided on the hook 23.

The operating piece 41 is rotatably supported by the hook 23 at a middle portion thereof by a horizontal shaft 41b, and the other end portion 41c thereof.
7 is arranged in a state of protruding to the engaging portion 23a of the hook 23 with which the engaging pin C1 is engaged, as shown by the solid line in FIG. Therefore, when the hook 23 engages with the engagement pin C1,
The engagement pin C1 comes into contact with the other end portion 41c of the operating piece 41 to rotate the operating piece 41 in the clockwise direction in FIG. 7 about the horizontal shaft 41b.
One end 41a of 1 approaches the proximity switch 4 as shown by the chain double-dashed line in FIG. 7, and the proximity switch 4 is turned on.

The lamp 3 and the proximity switch 4 are electrically connected by an electric cable 5 on the side of the telescopic arm 2, and the electric cable 5 is a front end of the horizontal portion 22a of the telescopic arm 2 as shown in FIG. It is connected to the telescopic arm side connector (moving side contact) 6 provided on the.

The telescopic arm side connector 6 is a spring type contact having a leaf spring-like connecting piece 61 provided on the upper portion thereof. The connecting piece 61 is extended so as to be inclined so that the front end side is upward, and the front end side is bent downward by elastic deformation.

On the other hand, at the front end of the outer arm 21, as shown in FIG.
As shown in FIG. 5, an outer arm side connector 7 is provided which is connected to the telescopic arm side connector 6 when the telescopic arm 22 is retracted with respect to the outer arm 21.

The outer arm side connector 7 is a plate-type contact having a connection portion 71 on the lower surface of which the connection piece 61 slidably contacts from below, and is connected to a power source (not shown) through an electric cable 8.

Therefore, when loading and unloading the container C between the ground and the vehicle body 1, the telescopic arm 2 is used with respect to the outer arm 21.
In the state where 2 is retracted, the telescopic arm side connector 6 and the outer arm side connector 7 are connected, and the lamp 3 and the proximity switch 4 are energized. As a result, when the hook 23 is engaged with the engagement pin C1 and the proximity switch 4 is turned on in the above state, the lamp 3 is turned on.

The power source may be, for example, the power source of a battery installed in a container-carrying vehicle, or a dedicated power source may be separately provided.

Thus, the lamp 3 and the proximity switch 4
When the container C is loaded on the vehicle body 1 from the ground by connecting the power source to the power source through the electric cables 5 and 8 by the telescopic arm side connector 6 and the outer arm side connector 7, the lamp 3 operates as follows. Will be done.

First, when loading the container C from the ground onto the vehicle body 1, as shown in FIG.
With the engaging pin C1 securely engaged, the cargo handling device 2
Need to be activated.

At this time, the telescopic arm 22 is the outer arm 2
Since the telescopic arm side connector 6 and the outer arm side connector 7 are connected to each other in the contracted state with respect to 1, the lamp 3 and the proximity switch 4 are electrically connected by the telescopic arm side connector 6 and the outer arm side connector 7. The power supply is energized through the cables 5 and 8. When the hook 23 of the cargo handling device 2 engages with the engagement pin C1, the operating piece 41 rotates and one end 41a thereof approaches the proximity switch 4, whereby the proximity switch 4 is turned on and the lamp 3 is turned on. Light.

The operation of engaging the hook 23 of the cargo handling device 2 with the engagement pin C1 of the container C placed on the ground is performed while the operator looks backward from the driver's seat, but the lamp 3 is turned on. It can be easily understood at a glance that the hook 23 is engaged with the engagement pin C1 by checking.

As described above, since the engagement state of the hook 23 and the engagement pin C1 can be confirmed by turning on the lamp 3, the worker engages the hook 23 from the driver's seat even in bad weather or at night. It can be surely known whether or not the pin C1 is engaged.

When the container C is mounted on the vehicle body 1, the telescopic arm 22 is extended with respect to the outer arm 21, so that the telescopic arm side connector 6 and the outer arm side connector 7 are separated from each other. So the lamp 3
Also, the power supply to the proximity switch 4 is cut off. Therefore, the engagement between the hook 23 and the engagement pin C1 causes the operation piece 4 to
Even if 1 is close to the proximity switch 4, the lamp 3 is turned off. Therefore, when the container C is mounted on the vehicle body 1 for traveling, the lamp 3 has the hook 23 and the engagement pin C.
Regardless of the engagement with 1, the lamp is turned off and power is not wastefully consumed, which is economical.

That is, the expansion / contraction of the telescopic arm 22 with respect to the outer arm 21 is utilized to connect and disconnect the telescopic arm side connector 6 and the outer arm side connector 7.
The energization state of the lamp 3 and the proximity switch 4 and the power source is operated to effectively operate the lamp 3 depending on the situation.

By the way, the lamp 3 is turned on while the loading and unloading operation of the container C is being performed by rotating the cargo handling device 2 by engaging the hook 23 and the engaging pin C1.
However, since this operation is short in time, it does not have a great influence from the viewpoint of power consumption, and the loading and unloading operation of the container C is performed by the lighting of the lamp 3 not only for the worker but also for the surrounding people. It is also effective because it can be notified.

Although the lamp 3 has been described as an example of the notification means in the present embodiment, a buzzer other than the lamp 3 may be used as the notification means, or both the lamp 3 and the buzzer may be used in combination. May be.

The mounting position of the lamp 3 may be any position such as the outer arm 21, the vehicle body 1 and the driver's seat as long as the operator can confirm the lighting, in addition to the telescopic arm 22.

Further, the engagement detecting device is the proximity switch 4
In addition, hooks such as limit switches and photoelectric switches
Anything can be used as long as it can detect the state in which 3 is engaged with the engagement pin C1.

[0044]

As described above, according to the engagement confirmation device for a container in a container-carrying vehicle of the present invention, when the container is loaded from the ground onto the vehicle body, the hook of the cargo-handling device engages with the engaging pin of the container. Whether or not the vehicle is engaged with is notified by the notification means based on the detection of the engagement detection device, so that the operator can surely know the situation from the driver's seat even in bad weather or at night.

In addition, the energization to the engagement detecting device and the notifying means is connected / disconnected by the movable side contact and the fixed side contact according to the expansion / contraction operation of the expansion / contraction arm accompanying the loading operation of the container. It is economical without doing.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic overall configuration of a container handling vehicle.

FIG. 2 is a side view showing a container handling vehicle equipped with a container.

FIG. 3 is a side view for explaining an operation of loading and unloading a container by a container handling vehicle.

FIG. 4 is a side view for explaining a loading / unloading operation of a container by a container handling vehicle.

FIG. 5 is a side view for explaining a loading / unloading operation of a container by a container handling vehicle.

[Fig. 6] Fig. 6 is a side view for explaining an operation when discharging the dust in the container by the container handling vehicle.

FIG. 7 is a partial side view showing a mounted state of a lamp and a proximity switch.

FIG. 8 is a partial side view showing a connection state between a telescopic arm side connector and an outer arm side connector.

[Explanation of symbols]

1 car body 2 cargo handling equipment 21 Outer arm 22 Telescopic arm 22a horizontal part 22b Vertical part 3 lamps (informing means) 4 Proximity switch (engagement detection device) 6 Telescopic arm side connector (moving side contact) 7 Outer arm side connector (fixed side contact) C container C1 engagement pin

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuyuki Okane             2 Sakaemachi, Sano City, Tochigi Prefecture Shinmeiwa Industrial Co., Ltd.             Company specially equipped vehicle division

Claims (3)

[Claims] 1. An outer arm whose rear end is supported on the rear end side of a vehicle body so as to be rotatable in the front-rear direction, and a horizontal portion is inserted into the outer arm so as to be extendable and contractible in the longitudinal direction, and at the tip. A cargo handling device is composed of a container and a telescopic arm in which a vertical portion having a hook that can be engaged and disengaged is erected from the front end of the horizontal portion and is formed in a substantially L-shape as a whole. After that, by rotating the outer arm in the front-rear direction, in a container loading / unloading vehicle in which the container can be loaded and unloaded between the vehicle body and the ground, the telescopic arm has a hook engaged with the container. At this time, an engagement detection device for detecting this engagement state is provided, and a moving side contact electrically connected to the engagement detection device is provided at a horizontal portion thereof, and the outer arm is electrically connected to a power source. A fixed side contact is provided to connect to the moving side contact when the telescopic arm retracts from the outer arm when loading and unloading the container, while the cargo handling device or the vehicle body side is fixed to the moving side contact. Confirmation of engagement with a container in a container handling vehicle, characterized in that a notification means is provided for informing a worker that the hook has engaged with the container based on the detection of the engagement detection device by connection with the side contact. apparatus. 2. The engagement confirmation device with a container in a container-loaded vehicle according to claim 1, wherein the moving side contact is a spring type contact and the fixed side contact is a plate type contact. 3. The engagement confirmation device with a container in a container-loaded vehicle according to claim 1, wherein the notifying means is a lamp or a buzzer.