JP4115744B2 - Engagement confirmation device with container in container handling vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a container handling vehicle provided with a cargo handling device for loading and unloading a container between a vehicle body and the ground. Specifically, when the cargo handling device is engaged with a container on the ground, the engaged state is determined by an operator. The present invention relates to an engagement confirmation device for confirming.
[0002]
[Prior art]
Conventionally, the hook provided at the tip of the cargo handling device is engaged with the engagement pin of the container, and the container is loaded from the ground onto the vehicle body by the operation of the cargo handling device, and the container is unloaded from the vehicle body to the ground by the reverse operation. A container handling vehicle is provided.
[0003]
In such a container handling vehicle, it is necessary to unload and unload the container in a state where the hook of the handling device is securely engaged with the engagement pin of the container from the viewpoint of safety. 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 engagement pin of the container.
[0004]
Therefore, conventionally, as seen in the one described in Japanese Utility Model Publication No. 1-8435, when a bar-like or plate-like confirmation member protrudes from the hook of the cargo handling device and the container is loaded onto the vehicle body from the ground. Has visually confirmed the state of the confirmation member to confirm whether or not the hook is securely engaged with the engagement pin.
[0005]
[Problems to be solved by the invention]
However, in the case where the confirmation member protrudes from the hook as in the conventional case, there is no problem that the confirmation member can be visually observed in good weather conditions. However, the confirmation member is visually observed in bad weather or at night. In a situation where this is not possible, it cannot be confirmed whether the hook is securely engaged with the engagement pin. Therefore, in such a situation where the confirmation member cannot be seen, the operator has to get out of the driver's seat and check the engagement state between the hook and the engagement pin.
[0006]
In addition, when the hook and the engagement pin are engaged, it is possible to notify the operator by detecting the engagement state and turning on the electrically connected lamp. However, since the hook and the engaging pin are always engaged when the container is placed on the vehicle body, the lamp will be lit even when the vehicle is running, etc. Become. Further, a switch is provided in a circuit for lighting the lamp, and the lamp can be turned off when the vehicle is running by this switch. However, a troublesome operation for turning on and off the switch is necessary.
[0007]
The present invention has been made in view of the above-described problems. The object of the present invention is to reliably confirm the engagement between the hook and the engagement pin regardless of the surrounding situation, and An object of the present invention is to provide an apparatus for confirming engagement with a container in a container handling vehicle, which is economical and does not require an operation by an operator, by performing electrical connection based on an operating state.
[0008]
[Means for Solving the Problems]
An apparatus for confirming engagement with a container in a container handling vehicle according to a first aspect of the present invention includes an outer arm whose rear end portion is supported on the rear end portion side of the vehicle body so as to be rotatable in the front-rear direction, and a horizontal portion within the outer arm. And a telescopic arm having a vertical portion having a hook detachable from the container at the tip thereof, which is erected from the front end of the horizontal portion and formed in a substantially L shape as a whole. In the container handling vehicle in which the container can be loaded and unloaded between the vehicle body and the ground by rotating the outer arm back and forth after retracting the telescopic arm with respect to the outer arm. the arm is disposed in the projecting position projecting forwardly of the normal hook, the engaging operation member is provided hooks is arranged at the detecting position when engaged with the engagement pin of the container, the In conjunction with coupling actuating member, the engaging operation member is disposed at the retracted position when it is disposed in the projecting position, the interlocking member is provided with engagement operation member is disposed in operative position when positioned at the detection position The outer arm is provided with a detection device that detects the operating member when the telescopic arm is retracted with respect to the outer arm and the interlocking member is disposed at the operating position. In addition, a notification means for notifying the worker that the hook has engaged with the container based on the detection by the detection device is provided.
[0009]
According to a second aspect of the present invention, the notification means is a lamp or a buzzer.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
FIG. 1 shows the overall configuration of a container handling vehicle, and FIG. 2 shows a container handling vehicle equipped with a container.
[0012]
This container handling vehicle is provided with a loading / unloading device 2 for loading and unloading the container C on the vehicle body 1 and discharging the load in the container C.
[0013]
The cargo handling device 2 includes an outer arm 21 disposed horizontally in a state where the container C is mounted (see FIG. 2), and a vertical portion 22b disposed vertically in the same state, and is formed in an L shape as a whole. A telescopic arm (inner arm) 22.
[0014]
The rear end of the outer arm 21 is rotatably supported via a dump frame 2a (see FIG. 6) that is rotatably supported at the rear of the vehicle body 1.
[0015]
The telescopic arm 22 is formed in a substantially L shape by a horizontal portion 22a inserted into the outer arm 21 and a vertical portion 22b erected from the front end portion of the horizontal portion 22a. The horizontal portion 22a is shown in the figure. The outer arm 21 can be extended and contracted in the longitudinal direction by a non-extending cylinder.
[0016]
The vertical portion 22b is provided with a hook 23 which can be engaged with and disengaged from an engagement pin C1 (see FIG. 2) provided on the container C at the tip thereof.
[0017]
Further, a hoisting cylinder 24 (see FIGS. 4 to 6) is connected between the outer arm 21 and the vehicle body 1, and the cargo handling device 2 is centered on the rear end portion by the elongating and retracting operation of the hoisting cylinder 24. And is configured to be rotatable in the front-rear direction.
[0018]
As the container C, an open type whose upper surface is opened or a sealed type whose upper surface is also closed is used, and the rear wall can be opened and closed so that the load can be discharged. In addition, the engaging pin C1 is provided at the upper part of the front wall, the support leg C2 is provided at the bottom front part, and the support roller C3 is provided at the bottom rear part.
[0019]
Further, a roller 11 for smoothly unloading the container C between the vehicle body 1 and the ground is provided at the rear end portion of the vehicle body 1.
[0020]
Then, the container C is unloaded from the container handling vehicle, with the container mounted as shown in FIG. 2, the horizontal portion 22 a of the extendable arm 22 is attached to the outer arm 21 by the extendable cylinder as shown in FIG. 3. The container C on the vehicle body 1 is slid backward by a predetermined length. Thereafter, as shown in FIG. 4, the container C is tilted by rotating the outer arm 21 together with the telescopic arm 22 by the hoisting cylinder 24. As a result, the container C can be unloaded from the vehicle body 1 to the ground as shown in FIG. Further, the ground container C is loaded onto the vehicle body 1 by the reverse operation to that described above.
[0021]
On the other hand, when discharging the load loaded in the container C, the outer arm 21 and the dump frame 2a are fixed integrally by a lashing device (not shown) with the container C loaded on the vehicle body 1. By tying and retracting the telescopic arm 22 with respect to the outer arm 21, the cargo handling device 2 as a whole is rotated upward to tilt the container C as shown in FIG. Discharge.
[0022]
By the way, this container handling vehicle is provided with an engagement confirmation device for an operator to confirm that the hook 23 is engaged with the engagement pin C1 of the container C. It is configured as follows.
[0023]
In the vicinity of the hook 23 of the vertical portion 22b of the telescopic arm 22, an engagement operation lever 3 as an engagement operation member that operates when the hook 23 is engaged with the engagement pin C1 of the container C as shown in FIG. Is provided.
[0024]
The engagement operating lever 3 has a base end portion rotatably supported by a support pin 31 on an upper end portion of the vertical portion 22b, and a slightly curved tip end portion follows the shape of the hook 23 as shown in FIG. It arrange | positions in the detection position arrange | positioned, and the protrusion position which protrudes ahead of the hook 23 shown with a dashed-two dotted line in FIG.
[0025]
The base end portion of the engagement operation lever 3 is connected to the upper end of the link rod 4 via a bracket 32. The bracket 32 is provided so as to be rotatable integrally with the engagement operation lever 3 around the support pin 31.
[0026]
The link rod 4 is arranged vertically on the side surface of the vertical portion 22 b along the vertical portion 22 b, and the lower end portion is connected to the interlocking lever 5 as the interlocking member via the bracket 51.
[0027]
The interlocking lever 5 has a base end portion rotatably supported by a lower end portion of the vertical portion 22b by a support pin 52, and the bracket 51 is integrated with the interlocking lever 5 around the support pin 52 at the base end portion. Is pivotally connected to the motor.
[0028]
When the telescopic arm 22 retracts with respect to the outer arm 21, the distal end of the interlocking lever 5 is an operating position (see a solid line in FIG. 7) that faces a proximity switch 6 described later, and a retracted position that retracts from the proximity switch 6 (see FIG. 7 dash-double-dot line).
[0029]
When the engagement operating lever 3 is disposed at the detection position, the interlocking lever 5 is disposed at the operating position through the link rod 4, and when the engagement operating lever 3 is disposed at the protruding position, the interlocking lever 5 is disposed. Each member is arranged so that is disposed at the retracted position through the link rod 4.
[0030]
Also, a spring 41 is connected between the link rod 4 and the vertical portion 22b. By urging the link rod 4 downward by the spring 41, the engagement operating lever 3 is moved to the protruding position, and the interlocking lever. 5 are arranged at the retreat positions.
[0031]
On the other hand, a proximity switch 6 as a detection device is provided at the tip of the outer arm 21. The proximity switch 6 constitutes a notification means driving circuit together with the electric cable 61 and the power source, and when the distal end of the interlocking lever 5 is disposed at the operating position in a state where the telescopic arm 22 is retracted relative to the outer arm 21 By being turned on, the notification means is activated. As the power source, for example, a battery power source mounted on a container handling vehicle may be used, or a dedicated power source may be provided separately.
[0032]
As the notification means, for example, a lamp 7 as shown in FIG. 1 is used, and this lamp 7 is provided in the driver's seat. The lamp 7 is lit when the proximity switch 6 is turned on to notify the operator of the state, and for example, a light emitting diode is used. In addition to the driver's seat, the lamp 7 may be provided at a position such as the outer arm 21 or the vehicle body 1 where the operator can confirm lighting.
[0033]
Next, the operation of the engagement confirmation device configured as described above will be described.
[0034]
First, when the container C is loaded onto the vehicle body 1 from the ground, the cargo handling apparatus 2 is operated with the hooks 23 of the cargo handling apparatus 2 securely engaged with the engagement pins C1 as shown in FIG. There is a need.
[0035]
At this time, the telescopic arm 22 is in a degenerated state with respect to the outer arm 21,
When the hook 23 of the cargo handling device 2 is engaged with the engagement pin C1, the engagement operation lever 3 is brought into contact with the engagement pin C1 and resists the biasing force of the spring 41, and is arranged from the protruding position to the detection position. Is done. As a result, the interlocking lever 5 is arranged at the operating position through the link rod 4, and the telescopic arm 22 is retracted relative to the outer arm 21 as described above, so that the tip of the interlocking lever 5 is close to the proximity switch 6. By facing each other, the proximity switch 6 is turned on and the lamp 7 is lit.
[0036]
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 at the rear from the driver's seat, but confirms that the lamp 7 is lit. Thus, it can be easily recognized at a glance that the hook 23 is engaged with the engagement pin C1.
[0037]
As described above, since the engagement state between the hook 23 and the engagement pin C1 can be confirmed by the lighting of the lamp 7, the operator can check the hook 23 and the engagement pin C1 in the driver's seat even in bad weather conditions or at night. It is possible to reliably know whether or not is engaged.
[0038]
When the container C is mounted on the vehicle body 1, the interlocking lever 5 is disposed at the operating position, but the telescopic arm 22 is in an extended state with respect to the outer arm 21. 6 apart. For this reason, the proximity switch 6 is OFF, and the lamp 7 is turned off regardless of the engagement between the hook 23 and the engagement pin C1 when traveling with the container C mounted on the vehicle body 1 or the like. It does not waste power and is economical. Further, when discharging the load in the container C, the lamp 7 is turned off regardless of the engagement between the hook 23 and the engagement pin C1 for the same reason as described above, and power can be consumed wastefully. Not economical.
[0039]
In other words, the lamp 7 is effectively operated according to the situation by turning the proximity switch 6 on and off by using the expansion / contraction operation of the expansion / contraction arm 22 with respect to the outer arm 21.
[0040]
Meanwhile, the lamp 7 is lit while the hook 23 and the engaging pin C1 are engaged and the cargo handling device 2 performs the loading / unloading operation of the container C. However, since this operation is short in time, there is not much influence from the viewpoint of power consumption, and the operator can be informed by the lighting of the lamp 7 that the container C is being unloaded. On the contrary, it is effective.
[0041]
In this embodiment, the lamp 7 is described as an example of the notification means. However, as the notification means, a buzzer or the like may be used in addition to the lamp 7, or both the lamp 7 and the buzzer may be used in combination. Good.
[0042]
In addition to the proximity switch 6, the detection device may be a limit switch, a photoelectric switch, or the like.
[0043]
【The invention's effect】
As described above, according to the container engagement confirmation device of the container cargo handling vehicle of the present invention, whether the hook of the cargo handling device is engaged with the engagement pin of the container when the container is loaded on the vehicle body from the ground. Since the notification means notifies whether or not based on the detection of the interlocking member by the detection device, the operator can surely know the situation from the driver's seat even in bad weather conditions or at night.
[0044]
Further, since the notifying means is operated according to the expansion / contraction operation of the expansion / contraction arm accompanying the container loading operation, power is not wasted and it is economical.
[Brief description of the 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 a container loading / unloading operation by a container handling vehicle.
FIG. 4 is a side view for explaining the container loading / unloading operation by the container handling vehicle.
FIG. 5 is a side view for explaining the container loading / unloading operation by the container handling vehicle.
FIG. 6 is a side view for explaining the operation when discharging the garbage in the container by the container handling vehicle.
FIG. 7 is a partial side view showing the configuration of the engagement confirmation device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Car body 2 Cargo handling device 21 Outer arm 22 Telescopic arm 22a Horizontal part 22b Vertical part 23 Hook 3 Engagement operation lever (engagement operation member)
5 Interlocking lever (interlocking member)
6 Proximity switch (detection device)
7 Lamp (notification means)
C Container C1 Engagement pin

Claims (2)

An outer arm whose rear end portion is supported on the rear end portion of the vehicle body so as to be pivotable in the front-rear direction, and a horizontal portion is inserted into the outer arm so as to be extendable in the longitudinal direction, and can be engaged with and disengaged from the container at the front end. A vertical portion having a hook that stands up from the front end of the horizontal portion and is formed in an approximately L-shape as a whole. After the telescopic arm is retracted relative to the outer arm, the outer arm is moved in the front-rear direction. In the container handling vehicle in which the container can be unloaded between the vehicle body and the ground by rotating, the telescopic arm is usually disposed at a protruding position protruding forward of the hook, and the hook is disposed in the container. the engaging operation member disposed at the detecting position when engaged engagement pin engages and is provided, in conjunction with the engagement actuating member arrangement to the retracted position when the engagement actuation member disposed projecting position Are, provided interlocking member engaging the actuating member is disposed in operative position when positioned at the detection position, the outer arm, the telescopic arm is degenerate with respect to outer arm, and the interlocking member are actuated position A detecting device for detecting the operating member when disposed on the outer arm or on the vehicle body side is provided on the outer arm or on the vehicle body side, informing the operator that the hook is engaged with the container based on the detection by the detecting device. An apparatus for confirming engagement with a container in a container handling vehicle.   2. The device for confirming engagement with a container in a container handling vehicle according to claim 1, wherein the notification means is a ramp or a buzzer.

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