JP2562401Y2 - Lifter for lifting flat pallets - Google Patents

Description

[Detailed description of the invention]

[0001]

INDUSTRIAL APPLICABILITY The present invention can be easily moved to a place for loading / unloading cargo on a flat pallet, and also performs loading / unloading of cargo on a flat pallet at the height of the flat pallet. The present invention relates to a lifter for lifting and lowering a flat pallet, which can be raised and lowered at any time to a height at which an operator can easily work.

[0002]

2. Description of the Related Art Materials, products, and the like (hereinafter simply referred to as luggage) loaded on a flat pallet in a factory or the like are transported together with the flat pallet to a place where predetermined work is performed (for example, in a factory or a warehouse). Then, at the work place, one piece at a time (normally, one piece of cardboard box when luggage is stored in a cardboard box) is transferred to a conveyor and transported. Done. The work of reloading the load loaded on the flat pallet carried to such a predetermined work place on a conveyor or the work of loading the loaded or sorted load again on the flat pallet is generally performed. It is performed manually by an operator. The height of the luggage to be loaded and unloaded on the flat pallet increases or decreases as the work progresses. Therefore, in the above-mentioned work, when the load on the flat pallet is small, the upper luggage is at a lower position. Therefore, there is a disadvantage that the burden on the worker is very large because the user has to take a bent position. In general, the load on such a flat pallet is mainly 25 to 35 kg, so that the burden of the worker who carries out the loading and unloading of the load on the flat pallet in a crooked posture is great. At present.

Conventionally, there has been a table lifter as a device for elevating and lowering luggage. This table lifter has one or more sets of two arms, which are pivotally mounted at the center of each other, and is vertically pivoted at both ends thereof. The lower end is pivotally attached to the upper part on both sides of the base, and the upper end is pivotally attached to the lower part on both sides of the table on which luggage is placed, and the arm is rotated around a pivot point at the center thereof to raise and lower the table. Therefore, even when the table is lowered most, the height of the upper surface of the table on which the load is to be placed is relatively high. Therefore, when such a table lifter is used when performing the above-described work, there is a disadvantage that the efficiency of loading the load is reduced and the work efficiency is deteriorated. In addition, since such a table lifter is a device provided to be used at a required work position, it is provided with a table lifter particularly in a facility (for example, a freezer warehouse or the like) where the work place often changes from time to time. I couldn't do that. As a result, in such a facility, there is no means such as the table lifter capable of responding to the change of the work place. Has become a serious problem.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks and can be easily moved to a predetermined place by a moving device equipped with a fork such as a forklift, and the height of the flat pallet is reduced to the flat pallet. It is an object of the present invention to provide a lifter for lifting and lowering a flat pallet, which can be raised and lowered at any time to a height at which a worker who loads and unloads luggage can easily work.

[0005]

The inventor of the present invention has conducted various studies to solve the above-mentioned problems. As a result, the pallet mounting table is placed substantially at the center on both sides of the pallet mounting plate on which the flat pallet is mounted. The piston rod receiver into which the rod is inserted is formed so as to protrude upward, and the upper ends of the hydraulic cylinder piston rods which are vertically fixed so that they can be operated in synchronization with both sides of the base are respectively set to the piston rods. A flat pallet elevating / lowering structure in which a pallet mounting table is fixed to the upper part of the tray so that the pallet mounting table can be freely raised and lowered, and a spacer is provided on the lower surface of the pallet mounting table to form a space for inserting a fork of a moving device having a fork. The lifter can be easily moved by the moving device even if the work place is changed, and the pallet mounting table Than it was to complete the investigation by the present invention that it is possible to position the surface.

Hereinafter, the lifter for lifting and lowering the flat pallet according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a flat pallet lifting lifter according to the present invention, FIG. 2 is a front view of the flat pallet lifting lifter shown in FIG. 1, and FIG. 3 is a flat pallet lifting lifter according to the present invention. It is a side view which shows the state which is moving by the forklift.

In the drawing, reference numeral 1 denotes a flat pallet 5 on which a load 7 is to be loaded, and a pallet placing plate 1a to be placed on the flat pallet 5 and the pallet placing plate 1a protruding upward substantially at the center of both sides thereof. And a pallet mounting table including the piston rod receiver 1b. The piston rod receiver of this pallet mounting table 1
1b is a tubular body having a shape that wraps a hydraulic cylinder 3 which will be described later when it is lowered. The cylinder 1b may not operate properly due to foreign matter or the like adhering to the piston rod 3a of the hydraulic cylinder 3 or a moving device such as a forklift. It is preferable that the hydraulic cylinder 3 can be prevented from being damaged by contact with another object during the movement.

Reference numeral 2 denotes a base that constitutes the bottom of the lifter for lifting and lowering the flat pallet according to the present invention and is mounted on the floor surface. Reference numeral 3 denotes a hydraulic cylinder fixed vertically to both sides of the base 2, The upper end of the vertically operated piston rod 3a is fixed to the upper part of the piston rod receiver 1b of the pallet mounting table 1, and supports the pallet mounting table 1 so as to be able to move up and down. This hydraulic cylinder 3 has a stroke at least as high as the height of the worker, and both hydraulic cylinders 3 have a piston rod 3a.
It is preferable that the moving speed is the same and that they can be operated in synchronism with each other and that they can be operated and stopped by switches such as a push button type or a foot type, although not shown. Foot-operated switches are preferred.

Reference numeral 4 denotes a fork 6a of a moving device 6 provided with a fork 6a when the flat pallet lifting lifter according to the present invention having the pallet mounting table 1, base 2, and hydraulic cylinder 3 is moved. The spacer 4 is vertically attached to the lower surface of the pallet mounting plate 1a of the pallet mounting table 1 in order to divide the space. The spacer 4 is vertically fixed to the lower surface of the pallet mounting plate 1a as shown in FIG. A steel plate having a predetermined thickness or a grooved steel flange fixed to the lower surface of the pallet placing plate 1a can be shown.

[0010]

In the lifter for raising and lowering the flat pallet according to the present invention, the hydraulic cylinders 3 are vertically fixed to both sides of the base 2 and both hydraulic cylinders 3 are operated in synchronization. The pallet mounting table 1 in which the upper end of the piston rod 3a of the hydraulic cylinder 3 is fixed to the upper part of the piston rod receiver 1b always moves while keeping the upper surface of the pallet mounting plate 1a horizontal. Since the loads on the pallet mounting table 1 and the flat pallet 5 on which the load 7 placed on the pallet mounting plate 1a is loaded are distributed and received in the same direction, it is possible to withstand a relatively large load. Pallet mounting plate 1a of pallet mounting table 1
Since the flexural rigidity of the pallet placing plate 1a is increased by the spacer 4 vertically provided on the lower surface of the pallet, a flat pallet 5 loaded with a large amount of loads 7 can be placed on the pallet placing plate 1a. is there.

In order to move the lifter for lifting and lowering the flat pallet according to the present invention to a predetermined working place, the pallet mounting plate 1a and the base are suspended by a spacer 4 vertically provided on the lower surface of the pallet mounting table 1. As shown in FIG. 3, the fork 6a of the moving device 6 is inserted into the space defined between the two, and then moved to a predetermined work place while being raised. At this time, if the pallet mounting plate 1a is kept at the lowest position, the height of the entire flat pallet lifter according to the present invention (from the lower surface of the base 2 to the upper end of the piston rod receiver 1b of the pallet mounting table 1). Of the pallet mounting table 1 and the hydraulic cylinder 3 is wrapped around when the piston rod receiver 1b of the pallet mounting table 1 is lowered. In the case of a cylindrical body, it is possible to prevent the hydraulic cylinder 3 from being damaged by contact with another object during the movement by the moving device 6. The horizontal displacement of the flat pallet lifting lifter according to the present invention, which is moved in such a state, is caused by the space in which the fork 6a of the moving device 6 is inserted by the spacer 4 suspended from the lower surface of the pallet mounting plate 1a. It is prevented because it is divided according to the width of 6a.

A pallet mounting plate of the pallet mounting table 1
The loading and unloading of the load 7 on the flat pallet 5 placed on 1a is performed as follows. When the flat pallet 5 on which the load 7 is loaded is placed on the pallet placing plate 1a, and when the work of reloading the load 7 on a conveyor or the like is performed, the pallet placing plate 1a in the most lowered state is moved. The hydraulic cylinder 3 is actuated by following the height of the load 7 which decreases as the operation proceeds, and the pallet mounting table 1 is raised. That is, the height of the pallet mounting plate 1a is adjusted so that the height of the load 7 on the flat pallet 5 is such that the worker can always work in a reasonable posture without bending. is there. When only the flat pallet 5 is placed on the pallet placing plate 1a of the pallet placing table 1 and the load 7 is loaded from the conveyor or the like onto the pallet 5, the hydraulic cylinder 3 is operated to operate the flat pallet. After raising the pallet mounting table 1 on which only the pallets 5 are mounted and positioning the pallet mounting table 1 at a height at which an operator can easily work, the packages 7 are sequentially placed on the flat pallet 5.
The hydraulic cylinder 3 is operated so that the worker can always place the next package 7 on the upper surface of the loaded package 7 in a comfortable posture without bending over. The pallet mounting table 1 is lowered.

[0013]

As described above in detail, the lifter for lifting and lowering the flat pallet according to the present invention can be moved easily by a moving device such as a forklift, so that it can respond easily and quickly even when the work place is changed. In addition, since the pallet mounting table is supported on the base via a hydraulic cylinder so as to be able to move up and down and the operating direction of the hydraulic cylinder is vertical, even if the load placed on a flat pallet is heavy, Not only can it lift and lower the pallet mounting table with sufficient strength, but it is fixed to the upper end of the piston rod of the hydraulic cylinder in order to raise and lower the pallet mounting plate on which flat pallets on which loads are loaded are mounted Is the upper part of the piston rod receiver formed so as to protrude upward at the approximate center on both sides of the pallet mounting plate. The upper surface of the pallet mounting plate is located far below the upper end of the pallet, so that the height of the upper surface of the pallet mounting plate can be located at a predetermined low position regardless of the stroke of the hydraulic cylinder. .

The lifter for lifting and lowering the flat pallet according to the present invention can be located at a height at which the worker can easily work when loading and unloading the flat pallet.
The work conditions are improved by reducing the burden on the workers,
Since the hydraulic cylinder operates on both sides of the pallet mounting table, it is possible to raise and lower the load in a stable state, and furthermore, it is a cylindrical body that wraps the hydraulic cylinder when the piston rod receiver of the pallet mounting table descends If this is the case, it is possible to prevent the occurrence of a phenomenon in which the hydraulic cylinder comes in contact with and damages another object during movement, and the practical value thereof is extremely large.

[Brief description of the drawings]

FIG. 1 is a perspective view of a flat pallet lifter according to an embodiment of the present invention.

FIG. 2 is an explanatory front view of the flat pallet lifter shown in FIG. 1;

FIG. 3 is a side view showing a state in which the flat pallet lifter according to the present invention is moved by a forklift.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet mounting table 1a Pallet mounting plate 1b Piston rod receiver 2 Base 3 Hydraulic cylinder 3a Piston rod 4 Spacer 5 Flat pallet 6 Moving device 6a Fork 7 Luggage

Claims (2)

(57) [Scope of request for utility model registration] 1. A pallet mounting plate (1a) on which a hydraulic cylinder (3) which is operated in synchronization with both sides of a base (2) is vertically fixed, and on which a flat pallet (5) is mounted. A pallet mounting table (1) comprising a piston rod receiver (1b) formed so as to protrude upward at substantially the center of both sides of the pallet mounting plate (1a) is provided at the upper part of the piston rod receiver (1b). The upper end of a piston rod (3a) of the hydraulic cylinder (3) is fixed and supported so as to be able to move up and down, and a moving device (6) provided with a fork (6a) on the lower surface of the pallet mounting table (1) Fork
A lifter for lifting and lowering a flat pallet, wherein a spacer (4) for partitioning a space into which (6a) is inserted is provided vertically. 2. A piston rod receiver for a pallet mounting table (1).
The lifter for raising and lowering a flat pallet according to claim 1, wherein (1b) is a tubular body having a shape enclosing the hydraulic cylinder (3) when lowered.