JPS623052B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous container unloading method and a conveying machine therefor.

With the rationalization of agriculture, various agricultural products such as potatoes produced on farms are transported in containers that pass between the farm and the shipping area. The containers are temporarily unloaded to a temporary storage area on the ground, and then loaded containers are placed one by one on a conveyor and unloaded by an unloading device, after which the empty containers are collected one by one and stacked in two tiers. They are stacked and loaded into the car.

As a result, loading and unloading containers one by one onto the conveyor using a forklift requires time and effort, which is extremely inefficient, and it is difficult to keep the unloading equipment functioning effectively without interruption. At the very least, dedicated forklifts and personnel were required for loading and retrieving containers.

The present invention solves the above-mentioned problems all at once, and the first invention is to efficiently and directly transfer containers between a truck and a conveyor with a single forklift while keeping them stacked in two tiers. The second invention relates to a method for lowering the vehicle, and the second invention relates to an apparatus therefor.

The present invention will be explained in detail below.

The continuous unloading method of the present invention is carried out continuously for containers loaded with potatoes by the continuous unloading device of the second invention, that is, the unloading device A and the conveying devices B and Ba on the carry-in side and the discharge side. To explain an example of unloading, the following 1st to 9th steps, essentially the 1st to 4th steps and the 6th to 9th steps, are progressing simultaneously, and unloading is performed continuously through 5 steps. .

First step (FIG. 1) Loading containers C and C stacked in two stacks are placed on the stopped loading conveyor 3 of the conveying device B on the loading side using a forklift (not shown). The lift 4 is located below the transport surface of the conveyor and does not interfere with the loading operation. During this time,
A sixth step, which will be described later, is progressing at the same time.

Second step (FIG. 2) The upper loading container C is held by the chuck arms 5, 5 of the upwardly moving lift 4, and is lifted and separated onto the lower loading container C. The carry-in conveyor 3 continues to stop. During this time, a seventh step, which will be described later, is simultaneously progressing.

Third step (FIG. 3) The lower loading container C is carried from the carrying-in conveyor 3 onto the conveyor 1 of the unloading device A. The loading container C in the upper stage is stationary at the height lifted in the second step. During this time, an eighth step, which will be described later, is simultaneously progressing.

Fourth step (Fig. 4) After the downward movement, the upper loading container C is released from the chuck arms 5, 5 of the lift 4 and is lowered onto the carry-in conveyor 3, while the conveyor 1 is turned over with the loaded container C still on it. Then, the potatoes are discharged from the same container to the cargo receiver 2, and then the robot moves back. During this time, a ninth step, which will be described later, is simultaneously progressing.

Fifth step (FIG. 5) The empty container C on the conveyor 1 is carried out to the carry-out conveyor 3a of the carrying device Ba on the carry-out side, and at the same time, the loaded container C is carried onto the conveyor 1 from the carry-in conveyor 3.

6th process (Fig. 6) The conveyor 1 turns over with the loaded container C on it, discharges the potatoes from inside the container to the receiving container 2, and then moves back, while the unloading conveyor 3a
The upper empty container C is held by the chuck arms 5a, 5a of the upwardly moving lift 4a and raised to the upper stage above the container height. During this time, the first step is proceeding at the same time, and two stacked containers C and C are loaded onto the carry-in conveyor 3 by a forklift.

7th process (Figure 7) Empty container C on conveyor 1 is carried out to conveyor 3
Export to a. During this time, the above-mentioned second process is progressing at the same time, and on the loading conveyor 3 side, the upper loading container C is lifted and the lower loading container C is lifted up.
separated from

8th process (Fig. 8) Chuck arms 5a, 5 of lift 4a after downward movement
The upper empty container C is opened from a and lowered onto the lower empty container C in two stacks. During this time, the third step is simultaneously progressing, and the loading container C is carried onto the conveyor 1 from the carrying-in conveyor 3.

Ninth step (FIG. 9) Empty containers C and C stacked in two tiers are collected from the top and bottom of the carry-out conveyor 3a. During this time, the fourth step described above is proceeding simultaneously, and the potatoes are unloaded from the container on the unloading device A side, and the upper loading container C is unloaded onto the carry-in conveyor 3 on the conveying device B side.

As a result, the incoming containers C and C are placed in a two-tier stacked state on the carry-in conveyor 3 by a forklift, while the two-tiered empty containers C and C are collected from the top of the carry-out conveyor 3a and are continuously stacked. Can be unloaded.

Next, a continuous unloading device according to a second invention that implements the first invention described above will be explained.

The unloading device A has left and right columns 13, 13 erected on a trolley 11 having fixed legs 12, and a conveyor 1 is provided on a shaft 14 suspended horizontally between the left and right columns 13, 13. The movable body 15 is a hydraulic cylinder 16
It is mounted so as to be swingable about the shaft 14 as a fulcrum from the loading and unloading position of the container to the unloading position on the rear cargo receiver 2 in response to the driving force of the container. This movable body 15 has a stopper 17 facing the upper edge of the container C, and this stopper 17 catches the container C so that it does not fall toward the cargo receiver 2 at the unloading position.

The conveyor 1 receives the driving force of the motor 18 at the carrying-in and carrying-out positions of the container C, and rotates from the right carrying-in side to the left carrying-out side.
The empty container C is carried in and carried out, but the carrying-in and carrying-out operations are controlled to be stopped during unloading.

The conveyor devices B and Ba on the carry-in side and the discharge side have the same mechanical structure, and the conveyor B on the carry-in side unloads the carry-in conveyor 3 onto a trolley 19 having fixed legs 20, and is at the same height as the conveyor 1 in the unloading device A. A guide frame 6 is erected on the side of the end of the carry-in conveyor 3, and a lift 4 is connected to the guide frame 6 by a drive element 7 from below the conveyance surface of the carry-in conveyor 3 to a height higher than the container height above the conveyance surface. It is installed so that it can move up and down up to the upper level. The drive element 7 is connected to a hydraulic cylinder 21, chain wheels 23, 23 which are pivotally supported at the tip of the cylinder rod 22, and one end of which is fixed to the fixed collar 24 of the hydraulic cylinder 21 through the chain wheels 23, 23. Chain 2 attached to lift 4
5, 25, and the lift 4 and the claws 8, 8 of its chuck arms 5, 5 are connected to the fork insertion port _C1 position in the loading container C below the transport surface and the lower stage above the transport surface, and It is controlled to be able to move up and down to the fork insertion port _C1 position in the upper loading container C and to each higher height position.

The lift 4 is equipped with a pair of front and rear chuck arms 5, 5 that can be slid freely along two upper and lower horizontal guide rails 10, 10, and the chuck arms 5, 5 are equipped with a drive element 9, for example, a hydraulic The ends of both cylinder rods 27, 27 of the cylinder 26 are fixed, and the hydraulic cylinder 2
6, the chuck arms 5, 5 are closed so as to narrow the distance between them, opened and slid so that they are widened, and can be held and opened as if holding the container C between them. For this reason, both chuck arms 5, 5 are provided with protruding claws 8, 8, respectively, which can be fitted loosely into the fork insertion port _C1 of the container, and the strokes of both cylinder rods 27, 27 in the hydraulic cylinder 26 are controlled by the front and rear facing rods. The values are such that the claws 8, 8 can be fitted into and removed from the fork insertion ports _C1 , _C1 .

The carrying device Ba on the carry-out side has the same mechanical structure as the carrying device B on the carrying-in side, and has a trolley 1 having fixed legs 20a.
9a, unloading conveyor 3a, guide frame 6a,
Lift 4a, drive element 7a, hydraulic cylinder 21
a, cylinder rod 22a, chain wheels 23a, 23
a, fixed collar 24a, chains 25a, 25a, guide rails 10a, 10a, chuck arm 5
a, 5a, claws 8a, 8a, a driving element 9a, a hydraulic cylinder 26a, and cylinder rods 27a, 27a, and are controlled to operate in a predetermined manner.

Both the loading and unloading conveyors 3, 3a in the conveying devices B and Ba on the loading and unloading sides are controlled to interlock with the conveyor 1 of the unloading device A during the fifth step, and the loading and unloading conveyors 3, 3a are controlled to interlock with the conveyor 1 of the unloading device A during the fifth step.
The carrying-in of the loading conveyor C to the conveyor 1 and the carrying-out of the empty conveyor C from the conveyor 1 to the carrying-out conveyor 3 are simultaneously completed in parallel. Also, lifts 4, 4a and chuck arms 5, 5, 5a, 5
A is controlled so that a predetermined operation is completed while both the carry-in and carry-out conveyors 3, 3a are stopped.

The unloading device A and the conveying devices B and Ba on the loading and unloading sides of the continuous unloading device are controlled by a controller (not shown in the figure) so as to operate automatically at the appropriate time according to each step of the method of the present invention. ) is controlled by

In the above embodiment, since the carrying device Ba on the carry-out side transports an empty container C, which is light in weight, the output of each drive element 7a is set to be lower than that of the carrying device B on the carry-in side. Not hinder.

Therefore, the present invention has the following advantages.

For the carry-in and carry-out sides, the work of loading incoming containers in two-tier stacks onto the carry-in conveyor and the task of collecting empty two-tier containers from the carry-out conveyor are repeated alternately. By simply doing this, the cargo in each container can be unloaded automatically and consecutively.

A single forklift can perform loading and retrieval work, and can also be directly transferred between the truck and the loading and unloading conveyors.

The transport devices on the loading and unloading sides are made of the same mechanism.
It is easy to manufacture, has excellent compatibility, and is easy to manage and repair.

[Brief explanation of the drawing]

1 to 9 are front views showing each step of the continuous unloading method of the present invention, FIG. 1 is the first step, FIG. 2 is the second step, and FIG. 3 is the third step, Figure 4 shows the 4th process, Figure 5 shows the 5th process, Figure 6 shows the 6th process,
FIG. 7 shows the seventh step, FIG. 8 shows the eighth step, and FIG. 9 shows the ninth step. FIG. 10 is a front view showing the relationship between the unloading device and the conveying machines on the carry-in side and the discharge side for carrying out the method of the present invention. FIG. 11 is an enlarged longitudinal sectional side view of the unloading device. FIG. 12 is an enlarged left side view showing one embodiment of the conveying machine of the present invention. Figure 13 is an enlarged right side view of the same.
FIG. 14 is an enlarged perspective view of the same part. FIG. 15 is a partially cut away perspective view showing the relationship between the lift and the chuck arm in an enlarged manner. In the diagram, A is an unloading device, B and Ba are transport devices on the loading and unloading sides, C is a container, C ₁ is a fork insertion port, 1 is a conveyor, 2 is a cargo receiver, 3 and 3a are loading and unloading devices. Conveyor, 4 and 4a are lifts,
5, 5, 5a, 5a are chuck arms, 6, 6a
is a guide frame, 7, 7a is a driving element, 8,
8, 8a, 8a are claws, 9, 9a are driving elements, 1
0, 10, 10a, 10a are guide rails.

Claims (1)

[Scope of Claims] 1. The above-mentioned unloading device in which the conveyor is provided in such a way that it can be operated intermittently from one carry-in side to the other carry-out side, and while the conveyor is stopped, the conveyor can be driven in reverse on a rear cargo receiver that intersects with the conveyance direction. Conveying machines are located on the loading and unloading sides of the conveyor, and the first step is to place loading containers stacked in two tiers on top of the loading conveyor equipped on the loading side conveyor. The second step is to hold the upper loading container on the loading conveyor with the chuck arm of the lift and float it onto the lower loading container to separate it.The third step is to carry the lower loading container from the loading conveyor to the conveyor. After the movement, the upper loading container is released from the chuck arm of the lift and lowered onto the loading conveyor.Meanwhile, the conveyor and the loading container are both reversed and unloaded from inside the container into the receiving area, after which the 4th stage returns. In the fifth step, the empty container on the process conveyor is transported to the unloading conveyor equipped on the transporting machine on the unloading side, and at the same time the loading container is loaded from the loading conveyor onto the conveyor. After unloading the container into the receiving area, the empty container is moved back, while the empty container on the carry-out conveyor is held by the chuck arm of the lifting lift and raised to the upper stage above the container height.The seventh step is to carry out the empty container on the conveyor to the carry-out conveyor. The eighth step is to release the upper empty containers from the chuck arm of the lowered lift and lower them onto the lower empty containers in a two-tiered manner.The ninth step is to collect the two-tiered empty containers from the top of the carry-out conveyor. The first and sixth steps, the second and seventh steps, the third and eighth steps, and the fourth and ninth steps are carried out simultaneously to carry in and carry out the cargo. A method for continuous unloading of containers characterized by unloading and unloading. 2 Consisting of an unloading device and transport positions located on the loading side and unloading side of the unloading device,
The unloading device is equipped with a conveyor that can carry a container and operate intermittently from the carry-in side to the carry-out side, and a stopper that faces the top edge of the container on the conveyor, and is equipped with a stopper that faces the top edge of the container on the conveyor. It is equipped with a movable body that can be driven in reverse from the loading/unloading position to the rear cargo receiving area that intersects with the transport direction, and both the loading and unloading conveyance devices each have a conveyor following the conveyor of the unloading device, A guide frame erected beside one end of the conveyor, a lift that moves up and down along the guide frame from a lower part of the conveyor surface to an upper part above the height of the container on the same conveyor surface by a driving element, and a fork difference between the containers. A continuous container unloading device comprising a pair of chuck arms which have claws that loosely fit into an inlet and can hold and open a container by sliding along a guide rail of a lift using a driving element.