JPH0212775B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is used in the field of cargo handling vehicles that load containers by rotating support arms provided on the vehicle body and transport the containers to a predetermined location. It is something.

(b) Prior art As disclosed in Japanese Patent Publication No. 31-3170, a conventional cargo handling vehicle has a rotatable support arm on the vehicle body, and a forked chain at the free end of the support arm. by suspending the chain, hooking the lower end of the chain to a shaft provided in the container, and rotating the support arm back and forth with a hydraulic cylinder,
Containers are now being loaded and unloaded.

(c) Problems to be solved by the invention However, with the above configuration, the container swings while the support arm is rotating, and an uneven load is applied to the container (if the cargo in the container is uneven).
If the container is tilted, loading and unloading is performed with the container tilted, making the work extremely unstable, and in the worst case scenario, there is a risk that the cargo inside the container may fall.

(d) Means for solving the problems The present invention solves the problems as described above.
Support arms having container support portions are provided on both sides of the rear of the vehicle body so as to be rotatable back and forth, the support arms are provided with cylinders that are pivotally supported by the vehicle body, and a recessed portion is formed in the central front portion of the vehicle body, In the recessed part,
An auxiliary arm located in front and below the container is provided so as to be able to rotate back and forth when the container is loaded, and a connecting part that can be connected to the container is provided at the end of the auxiliary arm, and the center of rotation and support of both arms is provided when the container is loaded and unloaded. The present invention relates to a cargo handling vehicle in which a portion and a connecting portion form a parallelogram.

(e) Embodiment An embodiment will be explained below with reference to the drawings. Reference numeral 1 denotes a vehicle body consisting of a chassis frame 1' and a subframe 1'' fixed on the chassis frame 1'. Support arms 3, 3 supporting the container 2 on both sides are provided so as to be rotatable back and forth, and the support arms 3, 3 extend in the front and back direction on the side of the subframe 1'', and one end is attached to the subframe 1''. It is designed to be rotated by pivotally supported hydraulic cylinders 4, 4.

Notch-shaped support parts 5, 5 are formed at the free ends of the support arms 3, 3, and the engagement shafts 6, 6 protruding from both sides of the container 2 are supported by the support parts 5, 5. It's summery.

Furthermore, a connecting shaft 7 is provided at a portion that partially projects from the free end of the support arms 3, 3 to make the left and right support arms 3, 3 rigid within a range that does not interfere with the container 2.

Reference numeral 8 denotes an auxiliary arm for holding the container 2 horizontally at all times during loading and unloading of the container;
The horizontal portion 9 and the vertical portion 10 form an L-shape, and a connecting portion 13 is formed at the tip of the vertical portion 10 to be connected to a bracket 11 at the front of the container 2 with a pin 12.

In the auxiliary arm 8, the end of the horizontal part 9 is pivotably supported in a recessed part 14 provided in the front-rear direction at the center of the sub-frame 1'' so that the lower end of the horizontal part 9 can rotate forward and backward. Frame 1″ crossbeam 15…
At the same time, the entire horizontal portion 9 enters into the recess 14, so that the auxiliary arm 8 does not come into contact with the container 2 when the container 2 is mounted on the subframe 1''.

Further, a stopper 16 is provided in the recessed portion 14 to restrict backward rotation of the auxiliary arm 8 beyond a predetermined amount,
When the auxiliary arm 8 comes into contact with this stopper 16, the connecting portion 13 of the auxiliary arm 8 is aligned with the position of the bracket 11 of the container 2 placed on the ground.

The stopper 16 is provided with a hole 17, and by inserting a pin 18 into this hole 17, this pin 18 engages with a hole 19 of the auxiliary arm 8, thereby restricting the forward rotation of the auxiliary arm 8. It's becoming like that.

When the container 2 is supported and connected by both arms 3 and 8, the center of rotation of both arms 3 and 8, the supporting part 5 and the connecting part 13 form a parallelogram, so that the container 2 is always kept horizontal. It is now possible to maintain the state.

20, 20 are holes provided in the support arms 3, 3;
The holes 20, 20 and holes 2 provided on both sides of the container 2
By inserting pins 22, 22 through the support arms 1, 21, the container 2 can be integrated with the support arms 3, 3.

23 is an outrigger provided at the rear of the vehicle body 1.
The present invention has the above-mentioned configuration. Next, the operation will be explained. First, when loading a container, the fourth
From the state shown in the figure, the hydraulic cylinders 4, 4 are extended to rotate the support arms 3, 3 rearward.

If you bring the vehicle close to container 2 in that state,
The engagement shafts 6, 6 are connected to the support parts 5, 5 of the support arms 3, 3.
and the coupling portion 13 of the auxiliary arm 8 corresponds to the bracket 11 of the container 2.

Therefore, as shown in FIG. 5, the pin 18 fixing the auxiliary arm 8 to the stopper 16 is removed, and the pin 12 is inserted through the joint 13 and the bracket 11.

In this state, after extending the outrigger 23, when the hydraulic cylinders 4, 4 are contracted, both arms 3,
8 forms a parallelogram, the container 2 is always moved horizontally as shown in FIG.

When the hydraulic cylinders 4, 4 are contracted to the maximum, the support arms 3, 3 rotate to the frontmost position as shown in FIG. 7, and the container 2 is placed on the subframe 1''.

After that, the outrigger 23 is stored and the container 2
transport to the designated location.

When unloading a container, the container can be unloaded by performing the reverse operation to the above.

Next, when dumping the container, first remove the pin 12 connecting the connecting part 13 of the auxiliary arm 8 and the container 2 from the state shown in FIG. hole 21,
Pins 22, 22 are inserted into 21 to fix the container 2 to the support arms 3, 3.

After extending the outrigger 23 in this state, the eighth hydraulic cylinder 4 is extended.
The container 2 can be dumped as shown in the figure.

Further, by reducing the hydraulic cylinders 4, 4, the container 2 can be stored.

(f) Effects of the Invention As described above, the present invention provides a support arm having a container support portion so as to be rotatable back and forth on both sides of the vehicle body, and an auxiliary arm having a connecting portion with the container that is partially recessed in the center of the vehicle body. A hydraulic cylinder is provided only on the support arm, and when loading and unloading a container, the center of rotation of both arms, the support portion, and the connecting portion form a parallelogram. The container can be maintained horizontally at all times, and unsafe operations such as container rocking and tilting during loading and unloading can be reliably avoided.

In addition, the auxiliary arm can hold the container in a horizontal state without any special power for rotation, so it can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is an overall view, FIG. 2 is a top view of FIG. 1, FIG. 3 is a sectional view taken along line AA in FIG. 2, and FIGS. 4 to 8 are diagrams showing operating states. 1 is the vehicle body, 2 is the container, 3 is the support arm, 4
is a hydraulic cylinder, and 8 is an auxiliary arm.

Claims (1)

[Claims] 1 Support arms having container support parts on both sides of the rear part of the vehicle body are provided so as to be rotatable back and forth, the support arms are provided with cylinders that are pivotally supported on the vehicle body, and a recessed part is formed in the central front part of the vehicle body. , an auxiliary arm located in front and below the container when loading the container is provided in the recess so as to be rotatable back and forth; an end of the auxiliary arm is provided with a connecting portion that can be connected to the container; A cargo handling vehicle in which a parallelogram is formed by the center of rotation of both arms, a supporting portion, and a connecting portion.