JPH026658B2 - - Google Patents

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 1, and an L-shaped tip at the tip of the dump frame 2. A cylinder 5 that pivotally supports the cargo handling arm 4 and rotates the cargo handling arm 4 back and forth is provided on the subframe 6, and an engagement arm 11 that engages and disengages from the hanging piece 9 of the container 8 on the dump frame 2 is provided. It is known that there is a The container loading/unloading vehicle has an engaging arm 11 and a hanging piece 9.
The cylinder 5 is disengaged from the cylinder 5, and the container 8 is loaded and unloaded by extending the cylinder 5.

However, in the container loading/unloading vehicle mentioned above,
As shown in FIG. 4, when loading or unloading a container 8 on a slope with a downward slope,
The hook 4a at the tip of the container 8 and the hanging member 13 of the container 8
When the contact point with the container 8 moves to point B in front, and in this state, the hydraulic cylinder 5 is extended to dump the container 8 and the cargo handling arm 4 is rotated backward, the tip of the cargo handling arm 4 is moved from the container 8 to the front point B. Due to the counterclockwise moment acting on the hook 4a,
When the joint point A lifts up, the dump frame 2 rotates clockwise, and the dump frame 2 floats a certain amount and the container 8 becomes approximately horizontal, a counterclockwise moment is applied from the container 8 to the cargo handling arm 4. Dump frame 2
There is a problem in that the container 8 suddenly falls, the cargo handling arm 4 rapidly rotates rearward (clockwise), and the container 8 suddenly moves rearward, resulting in a very dangerous situation.

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

<Configuration of the invention> In order to achieve the above object, the configuration of this invention is as follows:
As shown in FIGS. 1 and 2, a dump frame 26 at the rear end of the chassis frame 25, an L-shaped cargo handling arm 28 pivotally supported on the dump frame 26, and an engagement member that engages with a hanging piece 41 of the container 22. Joint arm 38
In the container loading/unloading vehicle, a hook 44 is rotatably supported on the dump frame 26, and a chassis frame 2 corresponding to the hook 44 is provided.
An engaging portion 46 is provided on the 5 side, and when the hook 44 and the engaging arm 38 are connected by a connecting member 42 and the engaging arm 38 and the hanging piece 41 are engaged, the hook 44 The engagement between the engagement arm 38 and the engagement portion 46 is released, and the engagement arm 38 and the hook 4 are disengaged from each other.
1, the hook 44 and the engaging portion 46 engage with each other.

<Operation of the Invention> With the above configuration, when loading and unloading the container 22, the engagement between the engagement arm 38 of the dump frame 26 and the hanging piece 41 of the container 22 is released, and at the same time, the engagement arm 38 of the dump frame 26 is disengaged from the hook 41 of the container 22, and at the same time the engagement arm 38 of the dump frame 26 is disengaged from the hook 41 of the container 22. Since the hook 44 of the dump frame 26 is automatically engaged with the engaging portion 46 on the chassis frame 25 side through the connecting member 42, the dump frame 26 is connected to the chassis frame 25 side via the hook 44. be done. Therefore, even if the container 22 is unloaded on a slope where the front side is downwardly sloped, and 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 up, and the cargo handling arm 28 is bent and stationary relative to the dump frame 26 from the beginning. Therefore, the dump frame 26 does not fall suddenly during operation as in the conventional case, and the container 22 will be sold smoothly and safely. On the other hand, when tilting the container 22 backward on the chassis frame 25, the engagement arm 38 of the dump frame 26 and the hanging piece 41 of the container 22 are engaged, and at the same time,
Since the engagement between the hook 44 and the engaging portion 46 is automatically released, the dump frame 26 and the container 22
are tilted backwards together.

<Examples> The present invention will be described in detail below with reference to illustrated examples.

In Figure 2, 21 is a container loading/unloading vehicle;
22 is a container mounted 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 on 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, while a hook 31 at the tip of the cargo handling arm 28 is attached to a hook 31 on the front surface of the container 22. 32. Further, the tip of a cargo handling cylinder 34 is rotatably connected to approximately the center of the horizontal portion 28a of the cargo handling arm 28, while the cargo handling cylinder 3
4 is rotatably connected to the tip of a subframe 35 provided on the chassis frame 25.
A roller 36 is provided at the rear end of the dump frame 26.
is provided to provide guidance when loading and unloading 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 attached to the substantially central portion of the dump frame 26 by pins 39. It is connected. One end of the engagement cylinder 40 is rotatably connected to the approximate center of the engagement arm 38 with a pin 51.
0 is connected to the subframe 35 by a pin 52. An L-shaped hook 41 is provided on the bottom surface 22a of the container 22, so that when the engagement cylinder 40 is extended and the engagement arm 38 is perpendicular to the dump frame 26, the engagement arm 38 is He is trying to engage with the hanging piece 41. On the other hand, one end of the hook 44 is rotatably connected to the dump frame 26 with a pin 45. An extension member 6 fixed to the approximate center of the hook 44 and the base end of the engagement arm 38
0 are rotatably connected to each other by pins 61 and 62 at each end of a substantially L-shaped connecting member 42, respectively.
One end 42a of the connecting member 42 has a threaded structure so that its length can be adjusted.

Furthermore, when the engagement cylinder 40 is contracted and the connecting member 42 moves rearward in FIG. Pin 4, which is an engaging part, is attached to the subframe 35 on the frame side.
6 is provided so that the hook 44 engages the pin 46.

In the container loading/unloading vehicle configured as described above, it is assumed that the container 22 is unloaded onto the ground on a sloping ground in front. At this time, the engagement cylinder 40 contracts in the same way as when unloading a container on flat ground. Then, the engaging arm 38 is disengaged from the hook 41 of the container 22, and at the same time, the hook 44 is automatically engaged with the pin 46 via the connecting member 42.
The dump frame 26 is fixed to a subframe 35 on the chassis frame side. Thereafter, when the cargo handling cylinder 34 is extended, only the cargo handling arm 28 is rotated rearward about the pin 29 since 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 that is linked to the operation of the engagement arm 38 engages with the pin 46, and the dump frame 26 is fixed to the chassis frame side, so that the cargo handling arm 28 is centered around the pin 29 from the beginning. The container 22 is safely unloaded without being bent as the dump frame 26 is lifted, and therefore the dump frame 26 is not suddenly dropped. 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 chassis frame 26 and the hook 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 floating up.

Next, as shown in FIG. 3, when dumping the container 22, the engagement cylinder 40 is pushed forward. Then, the engagement arm 38 of the chassis frame 26 is engaged with the hook 41 of the container 22, and at the same time, the hook 44 is automatically disengaged from the pin 46 via the connecting member 42, and the dump frame 26 is automatically disengaged from the hook 44.
The connection between this and the subframe 35 on the chassis frame side is released. Thereafter, when the cargo handling cylinder 34 is extended, the dump frame 26
and the container 22 are integrally connected by the engaging arm 38, so that the cargo handling arm 28 and the dump frame 26 are in a straight line along the bottom surface of the container 22, and the cargo handling arm 28 and the dump frame 26 are connected to the roller 36. The container 22 is then dumped.

In this way, the operation of the engagement cylinder 40 causes the engagement arm 38 and the hook 41 to be engaged, the hook 44 and the pin 46 to be disengaged, and the engagement arm 38 and the hook 41 to be disengaged from each other via the connecting member 42. Since the engagement between the hook 44 and the pin 46 is interlocked, loading and unloading the container 22 and dumping the container 22 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 hanging piece of the container are disengaged, the dump frame The provided hook is interlocked with the above-mentioned engagement arm by the connecting member and engages with the engagement part on the chassis frame side to fix the dump frame to the chassis frame, so it can be used on slopes with a downward slope at the front. Even if the container is unloaded with a container, etc., the dump frame will not float up and fall suddenly.
Therefore, the container can be unloaded safely and smoothly 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 state diagram showing a container transport vehicle loading and unloading containers on a slope. 22... Container, 25... Palm frame,
26... Dump frame, 28... Cargo handling arm, 38... Engagement arm, 41... Hanging piece, 42...
...Connecting member, 44... Hook, 46... Engaging portion.

Claims (1)

[Scope of Claims] 1. A dump frame that can be tilted backward is pivotally supported at the rear end of the chassis frame, and an L
A letter-shaped cargo handling arm is pivotally supported so that it can rotate forward and backward.
The dump frame is provided with an engagement arm that engages with and disengages from the hanging piece of the container, and when the engagement arm and the hanging piece are disengaged, the container can be loaded and unloaded by rotating the cargo handling arm. In the container loading/unloading vehicle, the container can be tilted backward on the chassis frame when the engaging arm is engaged with the hanging piece, and the hook is rotatably attached to the dump frame. an engaging portion is provided on the chassis frame side corresponding to the hook, and the hook and the engaging arm are connected by a connecting member, so that the engaging arm and the hanging piece are engaged with each other. When the engagement between the hook and the engagement portion is released, the hook and the engagement portion are engaged when the engagement between the engagement arm and the hook is released. Features: Container loading/unloading vehicle.