JPS6234829A - Container handling vehicle - Google Patents

Abstract

PURPOSE:To unload a container safely and smoothly by configurating a device in such a way that, when the container is unloaded, a dump frame will be secured on a chassis frame upon disengaging of an engaging arm of the dump frame from the latch of the container. CONSTITUTION:When a container 22 which is loaded on a load carrying platform 24 of a container handling vehicle, is unloaded, an engaging cylinder 40 is contracted first so as to allow an engaging arm 38 to be disconnected from a latch 41 of the container 22, and simultaneously a hook 44 is allowed to be engaged with a pin 46 by way of a connecting member 42. With this, a dump frame 26 is secured onto a subframe 35 on the side of a chassis frame 25. Then a cargo handling cylinder 34 is extended so as to swing only a cargo handling arm 28 afterward around a pin 29, and the container 22 is moved afterward while being guided by a roller 36, and then is lowered down on the ground. In this case, the hook 44 is engaged with the pin 46 to restrain the dump frame 26 from being lifted so as to maintain the safety for unloading the container 22.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a container loading/unloading vehicle used for transporting containers.

<Prior art> Conventionally, as shown in FIG. 4, a container loading/unloading vehicle has a dump frame 2 pivotally supported at the rear end of a chassis frame I, and an L-shaped cargo handling device at the tip of the dump frame 2. A cylinder 5 for pivotally supporting the cargo handling arm 4 and rotating the cargo handling arm 4 back and forth is provided on the subframe 6, and an engagement arm 11 for engaging and disengaging from the hanging piece 9 of the container 8 is provided on the dump frame 2. What has been established is known. Then, the container loading/unloading vehicle releases the engagement between the engaging arm 2 and the hook 9, extends the cylinder 5, and performs the loading/unloading operation of the container 8.

However, in the container loading/unloading vehicle, as shown in FIG. The contact point with the container 8 moves to point B in front, and in this state, in order to dump the container 8, the appropriate pressure cylinder 5 is extended U- and the cargo handling arm 4 is rotated rearward. Hook 4a at the tip of 4
Due to the counterclockwise moment acting on the joint point A, the dump frame 2 rotates clockwise due to the moment acting in the counterclockwise direction, and when the dump frame 2 floats a certain amount and the container 8 becomes approximately horizontal, the container 8 to cargo handling arm 4
As the counterclockwise moment no longer acts on the tamp frame 2, the tamp frame 2 suddenly falls, the cargo handling arm 4 suddenly rotates backwards (clockwise), and the container 8 suddenly moves backwards, which is very dangerous. The problem is that something like this happens.

<Object of the Invention> Therefore, the object of the present invention is to prevent the dump frame from floating and suddenly falling when a container is unloaded on a slope where the front side is lowered. The aim is to enable safe and smooth wholesale sales without any problems.

<+114 features of the invention> In order to achieve the above object, the structure of this invention is as follows in Section 1.2.
As shown in the figure, there is a dump frame 26 at the rear end of the palm frame 25, a 17-shaped cargo handling arm 28 pivotally supported on the dump frame 26, and an engagement arm 38 that engages with a piece of wood 41 of the container 22. In the container loading/unloading vehicle, a hook 44 is rotatably supported on the dump frame 26, an engaging portion 46 is provided on the side of the Oronoyano frame 25 corresponding to the hook 44, and the hook 44 and the above When the engagement arm 38 is connected with the connecting member 42 and the engagement arm 38 and the piece of wood 4I are engaged, the engagement between the hook 44 and the engagement portion 46 is released, and the engagement The feature is that when the coupling arm 38 and the piece of wood 41 are disengaged, the hook 44 and the engagement portion 46 are engaged with each other. When unloading, the engagement arm 38 of the dump frame 26 and the wood piece 41 of the container 22 are disengaged, and at the same time, the engagement arm 38 is released.
Since the hook 44 of the dump frame 26 is automatically engaged with the engaging portion 46 on the chassis frame 25 side via the connecting member 42 connected to the
It is connected to the shaft frame 25 side via. Therefore, the container 22 is unloaded on a slope where the front side is lowered,
Even when a moment is applied from the container 22 to the L-shaped cargo handling arm 28 in a direction that causes the dump frame 26 to float, the dump frame 26 does not float, and the cargo handling arm 28 is bent relative to the dump frame 26 from the beginning. Therefore, the dump frame 26 does not suddenly fall during operation unlike in the conventional case, and the container 22 is unloaded smoothly and safely. On the other hand, when the container 22 is tilted backward on the shirt frame 25, the engagement arm 38 of the dump frame 26 and the wood piece 4 of the container 22
1 is engaged, the engagement between the hook 44 and the engaging portion 46 is automatically released.
6 and the container 22 are integrally tilted rearward.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

In FIG. 2, 21 is a container loading/unloading vehicle, 22 is a container loaded on the loading platform 24 of the container loading/unloading vehicle 21,
25 is a chassis frame, 35 is a subframe fixed on the chassis frame, and 26 is a dump frame pivotally supported at the rear end of the subframe 35.

The rear end of an L-shaped cargo handling arm 28 is rotatably connected to the tip of the dump frame 26 with a pin 29, and a hook 31 at the tip of the cargo handling arm 28 is attached to the container 22.
It is engaged with a hooking member 32 having a curved surface. Further, approximately at the center of the horizontal portion 28a of the cargo handling arm 28, the tip of the cargo handling no cylinder 31 is rotatably connected, while the rear end of the cargo handling cylinder 34 is mounted on the soyano frame 25. It is rotatably connected to the tip.

A roller 36 is provided at the rear end of the dump frame 26 to guide the loading and unloading of the container 22.

Further, as shown in FIGS. 2 and 1, a substantially U-shaped engagement arm 38 has rear ends 38a, 38a at both ends thereof, which are rotatably connected to the center of the dump frame 26 by pins 39. It is connected. One end of an engagement cylinder 40 is rotatably connected to the approximate center of the engagement arm 38 with a pin 5I, while the other end of the engagement cylinder 40 is connected to the subframe 35 with a pin 52. 17 on the bottom surface 22a of the container 22.
A hook piece 4I in the shape of a letter is provided so that when the engagement cylinder 40 is extended and the engagement arm 38 is in a state perpendicular to the dump frame 26, the engagement arm 38 engages with the hook piece 41. ing. On the other hand, one end of the hook 44 is rotatably connected to the dump frame 26 with a pin 45. The approximately central portion of the hook 44 and the extension portion (O 60) fixed to the base end of the engagement arm 38 are rotatably connected by pins 61 and 62 at each end of the approximately R7-shaped connecting member 42, respectively. ing.

One end portion 42a of the connecting member 42 is made of 100% aluminum so that its length can be adjusted.

Further, the engaging cylinder 40 is contracted, the connecting member 42 is moved rearward in FIG. 1, and the hook 44 is attached to the dump frame 2.
6, a pin 46, which is an engaging part, is provided on the Zabuflare 1/35 on the Nyang frame side corresponding to the tip of the hook 44, and the hook 44 is connected to the pin 46.
I try to engage with them.

In the container loading/unloading vehicle configured as described above, it is assumed that the container 22 is unloaded onto the ground on a slope that is lowered in front. At this time, the engaging cylinder 4 is
0 is contraction. Then, the engagement arm 38 is disengaged from the hanging piece 4I of the container 22, and at the same time, the hook 44 is automatically engaged with the pin 46 via the connecting portion attachment 42, and the dump frame 2G is moved from the hook on the chassis frame side. It is fixed to the frame 35. Thereafter, when the cargo handling cylinder 34 is extended, only the cargo handling arm 28 is rotated rearward about the pin 29 because the dump frame 26 is fixed to the chassis frame side.

Then, the container 22 is moved rearward while being guided by the rollers 36, and the unloading operation of the container 22 is performed.

In this way, the hook 44 is linked to the operation of the engagement arm 38.
is engaged with the pin 46 and the dump frame 26 is fixed to the chassis frame side, so the cargo handling arm 28 is fixed from the beginning.
is bent around the pin 29, and the dump frame 26 is not lifted up. Therefore, the dump frame 26 is not suddenly dropped, and the container 22 is safely unloaded. That is, since the dump frame 26 is provided with a hook 44 and the sub-frame 35 is provided with a pin 46, when the container 22 is unloaded, the engagement arm 38 of the dump frame 26 and the hook piece 41 of the container 22 are released. The hook 44 and the pin 46 are engaged with each other to prevent the dump frame 26 from becoming bent.

Next, as shown in FIG. 3, when dumping the container 22, the engagement cylinder 40 is extended to an extended length U.

Ru. Then, the engagement arm 38 of the dump frame 26
At the same time, the hook 44 is automatically disengaged from the pin 46 via the connecting member 42, and the connection between the dump frame 26 and the sub frame 35 on the chassis frame side is released. Ru. Thereafter, the cargo handling cylinder 34 is extended, and as described above, the dump frame 26 and the container 22 are integrally connected by the engagement arm 38, so that the cargo handling arm 28 and the dump frame 26 are connected to the bottom surface of the container 22. form a straight line along
The cargo handling arm 28 and the dump frame 2G are the rollers 3
6 and the container 22 is dumped.

In this way, the operation of the engagement cylinder 40 causes the connecting member 4 to
2, the engagement arm 38 and the hanging piece 4I are engaged, the hook 44 and the pin 46 are disengaged, and the engaging arm 38 and the hanging piece 4I are disengaged from each other.
Since the detachment from the container 11 and the engagement between the hook 4.1 and the pin 46 are performed in conjunction with each other, loading and unloading of the container 22 and dumping to the rear can be easily performed.

<Effects of the Invention> As is clear from the above explanation, according to the container loading/unloading vehicle of the present invention, when the engagement arm provided on the dump frame and the wooden piece of the container are disengaged, the dump frame The provided hook is interlocked with the engaging arm by the connecting member and engages with the engaging portion on the soya frame side, thereby fixing the dump frame to the shirt frame.
Even when a container is unloaded on a slope where the front side is lowered, the dump frame does not rise and suddenly fall, and therefore the container can be safely and smoothly unloaded without dropping the container suddenly.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the main parts of an embodiment of the container loading/unloading vehicle of the present invention, Fig. 2 is a diagram of the container loading/unloading state, Fig. 3 is a diagram of the container tilted rearward, and Fig. 4 is a diagram of the conventional container loading/unloading vehicle. FIG. 2 is a diagram showing a container transport vehicle loading and unloading containers on a slope. 22... Container, 25... Noyam frame, 2
6...Dump frame, 28...Cargo handling arm, 38
... Engaging arm, 4I... Wood piece, 42... Connecting member, 44... Hook, 46... Engaging portion.

Claims (1)

[Claims] (1) A dump frame that can be tilted backwards is pivotally supported at the rear end of the chassis frame, an L-shaped cargo handling arm is pivotally supported on the dump frame so as to be rotatable back and forth, and a container can be hung on the dump frame. An engagement arm that engages and disengages the piece is provided, and when the engagement arm and the hanging piece are disengaged,
The container can be loaded and unloaded by rotating the cargo handling arm, and when the engaging arm is engaged with the hanging piece, the container can be tilted backward on the chassis frame. In the vehicle, a hook is rotatably supported on the dump frame, an engaging portion is provided on the chassis frame side corresponding to the hook,
When the hook and the engagement arm are connected by a connecting member and the engagement arm and the hanging piece are engaged, the engagement between the hook and the engagement portion is released, and the engagement arm is released. A container loading/unloading vehicle characterized in that when the hook and the engaging portion are disengaged from each other, the hook and the engaging portion are engaged with each other.