JPH09104504A - Elevatable work base for container unloader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by receiving a load at a height for unloading work by a roller chute which is interlocked with an elevatable base to elevate, and introducing it by an inclined conveyor and a chute installed on a tip of it to a horizontal belt conveyor. SOLUTION: A platform 1 is elevated by a operation pushbutton 7 installed on a proper position of an elevation type work base C to correspond to a height of a cargo D, and the cargo D is put down onto a roller chute 2 elevated simultaneously. This cargo D slides on the roller chute 2 to be received by an inclined roller conveyor 3 continuous with it, and the cargo D is introduced through a chute 4 installed on a tip of it to a conveyor belt A. For receiving a cargo at a lower position, the cargo is directly charged onto the horizontal conveyor A which is protruded backward by an elevatable drive unit 6. At this time, the roller chute 2 and the movable chute 4 which become obstacles for unloading and cargo passing are lifted up, and the cargo is carried through under a crotch of the elevatable drive unit 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work table which is mounted on a tip boom of a belt conveyor used for loading or unloading a container of a vehicle from a warehouse.

[0002]

2. Description of the Related Art Conventionally, when unloading goods in a warehouse or at a high position in a container, an operator puts the goods on a high platform and drops them on a conveyor belt of an extension boom, or puts them on a table installed on a forklift. Was there. Further, as an extendable belt conveyor, an overhang type is known in which the height of the boom tip can be changed.

[0003]

It is unstable and dangerous to place a step or the like in the conventional manner, and it is difficult to cope with various heights. In the case of a forklift, it is not suitable to use in a small space or in a warehouse, and its positional relationship with the belt conveyor is difficult and placement is often impossible.

Further, particularly when unloading a load at a high place, an overhang type telescopic boom type belt conveyor whose tip height can be changed is used. The workability is poor because the worker lifts the load that has flowed up in a tilted state, and the work height varies depending on the work position, resulting in poor workability.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a work table which can be vertically moved up and down is attached to an end of a horizontal telescopic boom type belt conveyor which travels and expands on a floor surface, and is further interlocked with the elevating table. A roller chute that receives the lifting and lowering load makes it possible to receive the load at the height for unloading work, and this load is guided by a slanted conveyor and a flexible chute attached to its tip onto a horizontal belt conveyor. I chose Further, the lower load is carried on the conveyor belt as it is, and the lifting platform is configured so as not to interfere with the transportation of the load on the conveyor belt.

With this configuration, when unloading work, the workbench is moved up and down, and at the same time the load receiving roller chute is also moved up and down, and the roller conveyor that relays the load from the roller chute onto the conveyor belt. One end of the roller chute moves up and down in conjunction with the dense movement of the roller chute so that the roller conveyor tilts and the cargo is smoothly carried on the conveyor belt. Therefore, it is easy to unload according to the height of the luggage, and it can be carried on the conveyor belt, so workability is good, and the luggage is dropped onto the conveyor belt from a high place, the packaging is damaged, and in some cases the luggage is damaged. There is no risk of breakdown or damage due to the overload of the conveyor belt due to the impact of luggage.

Further, unlike the overhang type, the telescopic boom type belt conveyor of the present invention has a horizontal position on the floor surface, so that the work for unloading incoming cargo is horizontal and constant, and the workability is good.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, an elevating workbench C is provided at the tip of a belt conveyor that extends and contracts on a floor B of a container.
Is installed so as to straddle the belt conveyor. Two elevating platforms 1 on which a loading or unloading operator is placed are arranged on the left and right, and side pillars 6a are erected and fixed on both sides of the belt conveyor tip boom, and mounted so that they can be elevated and lowered by the elevating drive device 6. Has been. The platforms 1 are positioned so as to move up and down on both sides of the belt conveyor. Then, the roller chute 2 formed of a roller conveyor having a space above the platform 1 and receiving a load at the waist height position of an operator placed on the platform,
It is attached to the elevating drive device 6 so as to elevate and lower in conjunction with. Therefore, it always follows the set position where the workability is always good with the platform. The roller chute is attached so as to be pivotable upward.
A roller conveyor 3 for continuing the flow of cargo to the conveyor belt A is arranged in front of the side pillar 6a of the lifting drive device 6 so as to be tiltable in succession to the roller chute 2. The rear end 3a of the roller conveyor 3 is attached to the side column 6a of the elevating and lowering drive device 6 by a pin hinge so as to be vertically movable at the same height as the roller chute 2, and the front end 3b is arranged in front of the side column 6a by a conveyor belt. It is attached to a pedestal 5 which is projected parallel to A. Therefore, the rear end 3a of the roller conveyor 3 rises along the side pillar 6a as the roller chute 2 rises, and is inclined. A movable chute 4 which is curved to fill the space between the front end 3b of the roller conveyor 3 and the conveyor belt A and guide the load smoothly onto the conveyor belt A is attached to the tip of the pedestal 5, and the tip 4a of the movable chute 4 is , Is stopped at a slight distance above the conveyor belt A. And this movable shoot 4
Can be rotated upward by a link mechanism or the like when not in use, which will be described later.

Since the lifting type workbench of the present invention is constructed in this manner, the operator M operates the pushbutton 7 with the platform 1 mounted at an appropriate position on the lifting type workbench C according to the height of the load D. The load can be lifted and at the same time the load can be unloaded on the lifted roller chute 2. This load slides on the roller chute 2, is taken over by the inclined roller conveyor 3 which follows it, and is guided onto the conveyor belt A via the chute 4 attached to the tip thereof.

As the roller conveyor 3 rises on one side in accordance with the rise of the roller chute 2 and the inclination becomes large, a brake mechanism (regenerative braking / dynamic braking) is provided in order to prevent the carrying speed of the cargo from rising too much. Is equipped with.

Further, when picking up a lower load, the load is directly loaded onto the horizontal conveyor belt A projecting rearward from the lifting drive device 6 and conveyed.

At this time, both the roller chute 2 and the movable chute 4 which hinder the unloading and the passing of the load are flipped up. The cargo is transported under the pedestal and under the lifting drive.

Similarly, when used as a loader (loading), the conveyor belt can be transferred over the horizontal conveyor belt A to reversely carry the goods and to the tip of the conveyor belt.

[Brief description of the drawings]

FIG. 1 is a side view when a workbench is raised.

FIG. 2 is a side view when the workbench is descending.

[Explanation of symbols]

 1 Platform 2 Roller Chute 3 Roller Conveyor 4 Chute 5 Platform 6 Lifting Drive Device 7 Operation Push Button A Conveyor Belt B Floor Surface C Lifting Workbench D Load M Worker

Claims (2)

[Claims] 1. A lifting / lowering drive device for a workbench capable of vertically moving up and down so as to straddle an end portion of a horizontal belt conveyor is attached, and the workbench has an appropriate space above the workbench.
The roller chute is fixed so that it can be moved up and down in conjunction with each other, and one end of the roller conveyor is axially attached to the other side of the elevating and lowering drive device at the same height as the axial attachment portion of the roller chute. The other end is slidably fixed to a lifting drive and is slidably mounted on a pedestal that is parallel to and spaced from the belt conveyor. Furthermore, at the tip of this pedestal, load is placed on the conveyor belt. Lifting workbench of container unloader with fixed chute for smooth wholesale. 2. The roller chute is attached to an elevation drive device so as to be able to rotate upward, and the chute is also pivotally attached to the tip of the pedestal so as to be able to rotate upward. Elevating workbench of container unloader.