JPS62143745A - Carrying vehicle - Google Patents

Abstract

PURPOSE:To hold a container horizontally and to eliminate swinging and tilting of the container at the time of unloading thereof by providing container supporting arms and an auxiliary arm pivotably front-to-back and defining a parallelogram by the pivoting points, a supporting portion and a connecting portion. CONSTITUTION:There are provided on both rear sides of the body 1 supporting arms 3, 3 adapted for supporting a container 2 and pivotable front-to-back by means of hydraulic cylinders 4, 4. There is provided at a depression 14 formed in the central front portion of the body 1 an auxiliary arm 8 pivotable front-to-back and, when a container 2 is loaded, extending under and in front of the container 2 and provided at an end with a connecting portion for connection to the container 2. There is further provided in the depression 14 a stopper 16 for preventing the auxiliary arm 8 to be pivotally moved backward exceeding a predetermined point. The pivoting points of both arms 3, 8, the supporting portion 5 and the connecting portion 13 are so arranged as to define a parallelogram so as to hold the container 2 horizontally at all times. This eliminates, with no specific power, swinging and tilting of the container 2 which be caused when unloading of the container 2.

Description

[Detailed Description of the Invention] (al) Industrial Application Field The present invention is used in the field of cargo handling vehicles that load containers by rotating a support arm provided on the vehicle body and transport the containers to a predetermined location. It is.

(bl) Prior Art As disclosed in Japanese Patent Publication No. 31-3170, a conventional cargo handling vehicle has a support arm rotatably provided on the vehicle body, and a fork-shaped support arm is provided at the free end 5 of the support arm. The container is unloaded by suspending a chain, hooking the lower end of the chain onto a shaft provided on the container, and rotating the support arm back and forth using a hydraulic cylinder.

(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
Loading and unloading was carried out with the container tilted, making the work extremely unstable, and in the worst case scenario, there was a risk that the cargo inside the container would fall.

(d) Means for Solving the Problems The present invention solves the above-mentioned problems by providing support arms having container support portions on both sides of the rear of the vehicle body so as to be rotatable back and forth. is provided with a cylinder that is pivotally supported on the vehicle body, and a recess is formed in the central front part of the vehicle body, and in the recess, an auxiliary arm located in front and below the container when the container is loaded can be rotated back and forth. The auxiliary arm is provided with a connecting part that can be connected to the container at the end thereof, and when loading and unloading the container, the pivot center of both arms, the supporting part, and the connecting part form a parallelogram. This relates to cargo handling vehicles.

(e) Embodiment Below, the embodiment will be explained using the drawings. Support arms (3) (31) supporting the container (2) are provided on both sides of the rear part of the sub-frame (1") so as to be able to rotate back and forth, and the support arms +31 (3) are attached to the sub-frame (1").
) extends in the front-rear direction on the side, and one end is attached to the subframe (
It is rotated by a hydraulic cylinder (41 (4)) which is pivotally supported at an angle of 1°.

A notch-shaped support part (5) (5) is formed at the free end of the support arm (31 (3)), and the support part (51 (51)
At the container (2), the engagement shaft (61(
61 is now supported.

In addition, a connecting shaft (7) is provided at the part of the support arm (31) that partially protrudes from the free end of the support arm (31) to make the left and right support arms (3) rigid within a range that does not interfere with the container (2). is provided.

(8) is an auxiliary arm for holding the container (2) horizontally at all times during loading and unloading of the container, and the auxiliary arm (8) forms an L-shape with the horizontal part (9) and the vertical part QQ). ,
At the tip of the vertical part αω, there is a connecting part (1) that connects to the bracket (11) at the front of the container (2) with a pin (12).
3) is formed.

The auxiliary arm (8) has a horizontal portion (9) in a recessed portion (14) provided in the longitudinal direction of the center of the subframe (1'').
) is pivotally supported so that it can rotate back and forth, and when the end of the horizontal part (9) is pivoted forward and backward, the lower end of the horizontal part (9) is attached to the crossbeam (1') of the subframe (1'').
5)..., the entire horizontal part (9) enters the recessed part (14), and the container (2) is pushed into the subframe (
1”), the auxiliary arm (8) is attached to the container (
2) so as not to come into contact with it.

In addition, a stopper (16) is provided in the recessed portion (■4) to restrict backward rotation of the auxiliary arm (8) beyond a predetermined level, and when the auxiliary arm (8) comes into contact with this stopper (16), the auxiliary arm The connecting part (13) of (8) matches 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 the hole (17), the pin (18) engages with the hole (19) of the auxiliary arm (8). This restricts the forward rotation of the auxiliary arm (8).

When the container (2) is supported and connected by both arms (3) and (8), the center of rotation of both arms (31 (81), the supporting part (5) and the connecting part (13) form a parallelogram. , so that the container (2) can be held horizontally at all times.

(20) (, 20) is a hole provided in the support arm (31 (3+), and the hole (20) (20) and the container (2)
Holes (21) on both sides (21) and pins (22)
) (22), the container (2
) can be integrated into the support arm, f3) (31).

(23) is an outrigger provided at the rear of the vehicle body (1).

The present invention has the above-mentioned configuration, and its operation will be explained next. First, when loading a container, the hydraulic cylinder (41(4)) is extended from the state shown in FIG.
Rotate 1 (3) backwards.

In this state, when the vehicle approaches the container (2), the engagement shaft (6) (6) will move the support arm (31 (support part of 31)
51 (engages 51 and the coupling part (13) of the auxiliary arm (8) matches the bracket (11) of the container (2).

Therefore, as shown in Fig. 5, the auxiliary arm (8) is attached to the stopper (1).
6) and insert the pin (12) through the joint (13) and bracket (11).

In this state, after extending the outrigger (23) and retracting the hydraulic cylinder +41 (4), both arms (3)
Since a parallelogram is formed at (8), the container (2) is always moved horizontally as shown in FIG.

When the hydraulic cylinder (41(4)) is contracted to the maximum, the support arm T3 (3) rotates to the frontmost position as shown in FIG. 7, and the container (2) is placed on the subframe (1'').

After that, store the outrigger (23) and move it to 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 connect the joint (13) of the auxiliary arm (8) and the container (
Remove the pin (12) that connects the support arm (31 (3) with the hole (20) (20) and the container (2)
Pin (22) (22) in hole (21) (21)
Insert the container (2) into the support arm (3) (3
Fixed to 1.

After extending the outrigger (23) in this state, by extending the hydraulic cylinder (4) (41), the container (2) can be dumped as shown in Fig. 8.

Moreover, if the hydraulic cylinder (41) is reduced, 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 with a portion located at the center of the vehicle body. A hydraulic cylinder is provided only on the support arm, and a parallelogram is formed by the center of rotation of both arms, the support portion, and the connecting portion when loading and unloading a container. Therefore, the container can be maintained in a horizontal state at all times, and unsafe operations such as rocking and tilting of the container during loading and unloading can be reliably avoided.

In addition, the auxiliary arm does not require any special power to rotate (although it can hold the container horizontally, 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 the hydraulic cylinder, and (8) is the auxiliary arm. Applicant: Akira Kyokuto Kaihatsu Kogyo Co., Ltd. 1) Sukita 2 Figure

Claims (1)

[Claims] 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, The recess is provided with an auxiliary arm that can be rotated back and forth to be located in front and below the container 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, so that the auxiliary arm can be rotated forward and backward when the container is loaded and unloaded. A cargo handling vehicle in which a rotation center of an arm, a supporting part, and a connecting part form a parallelogram.