JPH09132071A - Cargo handling device on load-carrying platform of truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a manual cargo handling work, by providing an articulated arm on a holding base movable along a guide rail, and setting a load grasping means rotatable in two directions, to the front end of the articulated arm. SOLUTION: A movable holding base 2 has plural guiding and load holding wheels running on a guide rail 1 at one side end, and a wheel for load holding at the other side end, and the base can move in the longitudinal direction of a load-carrying platform. On the guide rail 1 side of the movable holding base 2, the first vertical rotary shaft is provided, and the first arm 5 to rotate and slide move in the horizontal direction is provided on the first rotary shaft. The second rotary shaft is provided on the other side end of the first arm 5, and the second arm 6 rotating in the horizontal direction is provided on the second rotary shaft. The third vertical rotary shaft is provided at the front end of the second arm 6, and a load grasping means 14 rotatable in the horizontal direction by making the third rotary shaft as the center is installed on the third rotary shaft. Consequently, a cargo is grasped form the side, and can be lifted up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material handling apparatus for a van type truck.

[0002]

2. Description of the Related Art In recent years, van-type trucks have been increasing in number for the purpose of protecting cargo with the improvement of the quality of truck transportation. However, since the van-type truck has a roof and has only one entrance at the rear end, it is possible to use a dolly or a small forklift at a place with a platform, but it is not possible to use a crane or a forklift at other places.

Therefore, a belt conveyor is used,
Although it is equipped with a load transfer device that uses the carrier surface itself as a conveyor, it relies mostly on manual work for small-lot delivery.

[0004]

In a van type vehicle, loading work in a place without a platform is
1. Grab a load on the ground, 2. 2. Lift from the ground onto the platform. Move to the back of the van. The action of loading a load is required. No conventional cargo handling device can do all of this work, and only two operations, three operations, or two operations and three operations are possible, but one operation and four operations are manual operations. There was always work that relied on human resources somewhere. Further, this manual work is a heavy work of holding a load and is not preferable in terms of work safety.

In particular, with the aging of workers in recent years, there is a need for a cargo handling device which eliminates at least the work of hurt the back, that is, the action of holding a load, during the work of the actions 1 to 4 in order to prevent back pain. Conventionally, there is a crane that meets this condition, but it is not used in van type vehicles due to the drawbacks such as difficulty in mounting and slow work speed in van type vehicles.

[0006] It is an object of the present invention to provide a cargo handling device which eliminates the work of carrying a load in the operations of 1 to 4 and enables speedy work, and which can be attached to a van type vehicle without any special modification. .

[0007]

The structure of the present invention for achieving the above object is a guide rail installed on a bed of a cargo handling vehicle, a support base movable along the guide rail, and the support base. It is characterized in that it comprises a multi-joint arm installed at the end of the multi-joint arm and a load grasping means installed at the end of the multi-joint arm so as to be rotatable in two directions.

An actuator for rotating each arm upward or downward is installed on the multi-joint arm, and an operation switch for rotating each arm upward or downward by driving the actuator is installed. Is characterized by. Further, an actuator for moving the support base along the guide rail, an actuator for rotating the multi-joint arm in a direction other than up and down, and an operation switch for controlling the drive of each actuator are installed. .

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of an embodiment of the present invention. In the figure, 1 is a guide rail having a C-shaped cross section,
It is installed long at the left or right end of the floor of the cargo bed in the front-rear direction and supports the moment in the front-rear direction due to the load.

Reference numeral 2 denotes a movable support base, which has a plurality of guide and load support wheels 3a running in the guide rail 1 at one end, as shown in FIGS. The other end has a wheel 3b for supporting a load, and is installed so as to be movable in the front-rear direction of the loading platform. As a result, the movable support base 2 can be moved from the rear end opening of the luggage carrier to the innermost portion of the luggage carrier as shown in FIG.

A vertical first rotating shaft 4 is provided on the guide rail 1 side of the moving support base 2, and a first arm 5 for horizontally swinging and sliding is provided on the first rotary shaft 4.
A second rotation shaft 7 is provided at the other end of the arm 5, and a second arm 6 for horizontally rotating the second rotation shaft 7 is provided.
Is horizontally rotatable about the first rotation axis 4 and has a length of about half of the bed, and the second arm 6 is horizontally rotatable about the second rotation axis 7. It has about half the length of a truck bed. As a result, as shown in FIG. 5, the arm tip can be moved from the width direction in the cargo bed and the rear end of the cargo bed to any position within the radius of the arm length. The second arm 6 incorporates an up-and-down unit for moving up and down the tip of the arm. This is 3 as shown in Figure 6.
A Z-shaped parallel link having a step, a gear 9a fixed to the tip of the first parallel link 8a, and a second parallel link 8b.
The gear 9b fixed to the rear end meshes with the first joint 10a, and the first parallel link 8a and the second parallel link 8b are engaged.
Work together. Further, the gear 9c fixed to the tip of the second parallel link 8b and the gear 9d fixed to the rear end of the third parallel link 8c are meshed with each other at the second joint 10b,
The second parallel link 8b and the third parallel link 8c move together. In FIG. 6, when the actuator 11 attached to the first parallel link 8a is contracted, the tip of the first parallel link 8a descends. As described above, the first parallel link 8a and the second parallel link 8b are interlocked with each other, and as a result, the second arm tip portion 12 descends. With these three parallel links, a large vertical stroke can be obtained compared to the arm length. As a result, the tip of the arm can be moved from the floor surface inside the loading platform to the ceiling and to the ground outside the loading platform. Further, since the parallel link structure restricts the freedom of movement other than in the vertical direction, the second arm tip portion 12 can always maintain a constant angle with the ground.

A third member perpendicular to the second arm tip portion 12 is provided.
There is a rotating shaft 13, and a load grasping means 14 capable of rotating horizontally around the rotating shaft 13 is attached. As described above, since the third rotating shaft 13 attached to the second arm tip portion 12 is always kept vertical, the moment of the load grasping means 14 can be supported, so that it is possible to grasp and lift a load from the side. Is.

An operation switch 15 for raising and lowering means and a drive means for each part is attached to the second arm tip portion 12 so that the load 16 can be operated while holding a hand. Next, the operation flow of loading the loads 16 will be described with reference to FIG.
FIG. 7A shows an operation of grasping the load 16 on the ground. The operation switch 15 is operated to move the first arm 5 and the second arm 6 in the horizontal direction, and the vertical movement is performed to move the load in the vertical direction. 14 is aligned with the position of the load 16, and the load grasping means 14 grasps the load 16.

FIG. 7B shows the operation of lifting the load 16 from the ground onto the loading platform. The grasped load 16 is applied to the first arm 5,
The second arm 6 moves it in the horizontal direction, and the up-and-down means moves it in the up-and-down direction to carry it on the loading platform. At the same time, the worker 17 as well as the load 16 climbs onto the bed in step 18. At this time, the worker 17 can carry out the work by putting his hand on the load 16 without exerting any force, and does not have to worry about hurt his back.

FIG. 7C shows the operation of moving to the back of the van and loading the load 16. By moving the movable support base 2, the load 1
Move 6 to the back of the loading platform. At the same time, the worker 17 also moves to the back of the loading platform along with the load 16 by walking. The loads 16 are aligned and stacked at the loading position by the horizontal movement of the first arm 5 and the second arm 6 and the vertical movement of the vertical movement means.

The operation of unloading may be the reverse of the operation of loading. Even when unloading, the worker 17 manually loads the load 1.
Because it is a work form that carries 6 but does not exert force,
Freed from the heavy labor of having.

[0017]

As described above, the present invention provides a guide rail installed on a bed of a cargo handling vehicle, a support base movable along the guide rail, an articulated arm installed on the support base, and the multi-arm. Since the load grasping means is installed at the end of the joint arm so as to be rotatable in two directions, the van type truck can be opened and closed by the multi-joint arm and the load grasping means at the end of the articulated arm can rotate even in a place without a platform Since it is possible to mechanically load and unload loads to and from the machine, and the heavy work of manually holding the load can be eliminated, it is possible to cope with the aging of truck drivers and the increase of female drivers. Have an effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially omitted front view of an articulated arm.

FIG. 3 is a side view in which a connecting portion between a guide rail and a movable support base is partially omitted.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is an explanatory diagram showing an operation range.

FIG. 6 is an explanatory view showing a structure of an up-and-down unit.

FIG. 7 is a side view illustrating the operation.

[Explanation of symbols]

 1 Guide Rail 2 Moving Support 5 First Arm 6 Second Arm 14 Load Grasping Means 15 Operation Switch

Claims (3)

[Claims] 1. A guide rail installed on a bed of a cargo handling vehicle, and a support base movable along the guide rail,
A loading platform loading / unloading device comprising a multi-joint arm installed on the support base and a load grasping unit installed at the tip of the multi-joint arm so as to be rotatable in two directions. 2. The multi-joint arm is provided with an actuator for rotating each arm upward or downward, and an operation switch for rotating each arm vertically or downward by driving the actuator. The loading device according to claim 1, wherein: 3. An actuator for moving the support base along the guide rail, an actuator for rotating the multi-joint arm in a direction other than up and down, and an operation switch for controlling the drive of each actuator. The cargo bed upper cargo handling device according to claim 1 or 2.