JPH0650475Y2 - Cargo lifter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cargo handling lifter which is used when stacking columnar bodies such as roll paper in a multi-tiered manner with the cylinders lying down.

[Conventional technology]

Since a roll of paper material such as corrugated cardboard wound in a column shape (so-called "roll paper") is very heavy and bulky, it is usually used for transportation within a factory or loading on a truck. , It uses a forklift with claws that holds rolled paper that has fallen sideways. For example, when the roll paper is always loaded in the truck bed, as shown in FIG.
The gripper 2a grips and lifts to a position slightly higher than the truck bed 3, and then the claws 2a extended onto the truck 3 are opened to drop the roll paper 1 on the truck 3 and roll it on the back side of the truck 3. By repeating this operation, the roll papers 1 are arranged in a horizontal row on the loading platform 3. Next, as shown in FIG. 9, the transfer board 4 is placed so as to cover the valleys between the roll papers 1 arranged side by side,
The same operation as above is repeated to stack the roll paper 1 in two stages. In this way, two-tiered stacking as shown in FIG. 10 can be achieved.

[Problems to be solved by the device]

However, in the case of a truck of a type in which the upper part of the loading platform 3 is opened, the two-tiered stacking described above can be performed, but in a vehicle of a type in which the upper portion of the loading platform 3 is enclosed, such as a van type truck or a wing car. When loading roll paper 1,
Depending on the size of these vehicles or the size of the roll paper 1, normally, as shown in FIG. 11, the portion above the claws 2a of the forklift 2 that holds the roll paper 1 is the size of the vehicle. It cannot hit the ceiling 5 and enter the vehicle. Therefore, conventionally, the roll paper 1 can be loaded in only one stage on a van-type truck, a wing vehicle, etc., and the amount that can be loaded at one time (that is, the amount transported at one time) is small. It was a problem.

The present invention has been made in view of such circumstances, and an object thereof is to provide a cargo handling lifter that assists loading work so that multi-tier loading can be easily performed on a vehicle of a type in which an upper part of a cargo bed is enclosed. .

[Means for Solving the Problems]

In order to achieve the above object, the cargo handling lifter of the present invention is a cargo handling lifter used when loading a columnar body in a multi-stage state with the columnar body laid down horizontally. And a box-shaped base block that is vertically movably supported, and a plurality of screw shafts B that extend in the vertical direction in the base block. And a single motor arranged in the base block and capable of simultaneously rotating and driving the screw shaft A and the screw shaft B. By rotating the screw shafts A and B, the base block and the mount table are mounted. Simultaneously move up and down, and also support a plurality of screw shafts B
Among these, the rotation speed of the screw shaft B1 on the unloading side is set to be slower than the rotation speed given to the screw shaft B2 on the opposite side, and the mounting table that is horizontally arranged in the normal state is Takes the configuration that is designed to incline toward the unloading side.

[Action]

That is, in the cargo handling lifter of this invention, the base block is movably supported by the screw shaft A, and the mounting table on which the columnar body is mounted is lifted and lowered by the screw shaft B extending in the vertical direction in the base block. Since it is freely supported, if the screw shaft A and the screw shaft B are rotated, the base block is raised by the screw shaft A and the mounting table is raised by the screw shaft B at the same time, so that the mounting table suddenly rises. It has become. Moreover, in the above-mentioned raising / lowering operation, the normally horizontal mounting table is
Since it is set to incline toward the unloading side with the ascending operation, the object placed on the mounting table automatically rolls down to the unloading side at the end of the ascending operation. Further, since the screw shaft A and the screw shaft B are rotationally driven by a single motor, there is an advantage that the whole is compact and lightweight. Therefore, after loading roll paper etc. in a horizontal row on the loading platform of the truck etc. by the conventional method, place the above cargo handling lifter in the space at the end of the loading platform, and roll paper etc. on the loading platform of this cargo handling lifter with a forklift. When the roll paper or the like is placed and operated, the roll paper or the like automatically rolls down into the track, and the roll paper or the like can be further stacked in two stages on the roll paper or the like arranged in a horizontal row. As a result, the roll paper or the like can be easily stacked in two stages even in a vehicle such as a wing car in which there is a limit in the height direction and the claws of the forklift cannot be inserted. Further, by applying this, various columnar bodies can be easily stacked in multiple stages in a space whose height direction is limited.

Next, this invention will be described in detail based on embodiments.

〔Example〕

FIG. 1 shows an embodiment of this invention. This cargo lifter has a box-shaped base block 11, four screw shafts A for raising and lowering the base block 11 (one on the back side is hidden and cannot be seen), and a cylindrical body is laid down sideways. The mounting table 13 is composed of a plate body that is bent in a concave shape so that it can be mounted in a state. The above-mentioned mounting table 13 has four screw shafts B1 and B2 that move up and down in the base block 11 (see FIG. 4).
It can be moved up and down freely. In addition, 15 is a caster that can be attached to four locations on the bottom surface of the base block 11, 16
Is a hand-operated switch for giving an elevating operation to this cargo lifter, which has an ascending button and a descending button so that an operation instruction can be given at hand.

The screw shaft A for moving up and down the base block 11 is
As shown in FIG. 2 which is a sectional view taken along the line AA ′ in FIG. 1, nuts 1 attached to the four corners of the bottom plate 11a of the base block 11 are attached.
It is in agreement with 7. Pillow blocks 18 and 19 are attached above and below the screw shaft A to rotatably support the screw shaft A. Reference numeral 30 is a protective cover that covers the screw shaft A in a cylindrical shape. Two sprockets 21 are attached to each of the screw shafts A shown, but a special note is formed on the inner peripheral surface of the sprocket 21, and the sprocket 21 is formed on the outer peripheral surface of the screw shaft A in the vertical direction. Engaged with the groove 12a,
The rotation is transmitted to the screw shaft A at a fixed position regardless of the lifting / lowering operation of the screw shaft A. Upper pillow block
As for 18 as well, a protrusion is formed on the inner peripheral surface so that the screw shaft A is rotated at a fixed position. As shown in FIG. 3 which is a schematic cross-sectional view taken along the line CC ′ in FIG. 2, among the above-mentioned sprockets 21, the lower left front sprockets.
21 is a sprocket mounted on the rotary shaft of the motor 20
Is connected via a chain 23, and rotational drive is given to the screw shaft A on the front left side. 28,29
Is a free-wheeling sprocket for expanding the traveling path so that the chain 23 does not hit the screw shaft B2. The upper sprocket 21 on the front left side rotates integrally with the lower sprocket 21 and transmits the rotation to the upper sprocket 21 on the right side via a chain 24. Further, the lower right sprocket 21 transmits rotation to the lower right sprocket via the chain 25, and the upper right upper sprocket transmits rotation to the rear left sprocket via the chain 26. I'm running. Therefore, when the motor 20 is operated in accordance with the instruction to move up or down, the four screw shafts A rotate in unison at the same speed and the base block 11 moves up and down. It should be noted that the pillow block 19 at the lower end of the screw shaft A is set so as to be slightly floating from the floor surface in the initial state where the base block 11 does not move up and down (see FIG. 2). When the rotation is started, the screw axis A is first lowered, and the base block 11 is started to be lifted when the pillow block 19 is attached to the floor surface. This enables the cargo handling lifter to be freely transported to an appropriate position by the caster 15 in a non-operating state, and fixes the cargo handling lifter by the pilot lock 19 during the operation (the caster 15 is The base block 11 rises away from the floor).

On the other hand, the mounting table 13 is a fourth sectional view taken along the line BB 'in FIG.
As shown in the figure, the rib plate 13a attached to the back side,
By connecting to the chamfered upper ends of screw shaft B1 (screw shaft on the unloading side) and screw shaft B2 (screw shaft on the opposite side to the unloading side) via pin 31, the connection angle can be set arbitrarily. It is attached so that it can be changed to. The screw shafts B1 and B2 extend vertically inside the base block 11 and project downward from the bottom plate 11a of the base block 11. A nut 33 is rotatably attached to the bottom plate 11a via a thrust bearing 32, and the nut 33 is engaged with the screw shafts B1 and B2. On the upper side of the nut 33, a sprocket group for rotation transmission is integrally attached. Reference numeral 50 is a protective cover that covers the screw shafts B1 and B2 in a cylindrical shape. The transmission of rotation to each sprocket is as shown in FIG. 5 which is a schematic sectional view taken along the line DD ′ of FIG. That is, from the sprocket 34 attached to the rotary shaft of the motor 20, to the bottom sprocket 35 of the screw shaft B2 on the front left side, rotational drive is provided via the chain 36, and from the sprocket 37 in the middle stage. The rotation is transmitted to the lower sprocket 38 on the front right side through a chain 39. The rotation of the sprocket 38 is transmitted from the sprocket 40 on the upper stage thereof to the sprocket 42 on the far right side through the chain 41. Also, on the left side sprocket 43,
The rotation is transmitted from the upper spket 44 on the front left side through the chain 45. Therefore, the motor
When 20 is activated, the four screw shafts B2, 14b are set to rotate synchronously all at once. However, the diameter of the sprocket must be different, and the rotation speed of the screw shaft B1 on the unloading side [T
_(B1) ] and the rotation speed of the opposite screw shaft B2 [T _(B2) ]
By setting _(B2) > T _(B1) , the screw shaft B1 on the unloading side rises later than the screw shaft B2 on the opposite side. This difference in rotation speed is T _(B2) : T _(B1) = 4
It is preferable to set it to about 0:30 to 40:35. In this way, since the screw shaft B1 on the unloading side and the screw shaft B2 on the opposite side have different rotational speeds, in the state before the start of the operation, as shown in FIG. At the end of the ascending operation, the lengths of the left and right screw shafts B2 and B1 are different and the mounting table 1
3 is inclined to the unloading side.

Therefore, according to this cargo handling lifter, the roll paper 3 and the like automatically roll down to the unloading side at the ascending end point of the mounting table 13, so that the forklift does not need to be inserted into the cargo platform, which is efficient. You will be able to carry out loading work. In particular, in the loading work in a place where the upper part of the loading platform is enclosed and the height is limited like a van type truck or a wing vehicle, first, the roll paper 1 is placed on the loading platform 3 by the forklift as in the conventional case. After loading them in a horizontal row, etc., place this cargo lifter in the empty space at the end of the loading platform 3 as shown in FIG. 7 to bring the whole unit to the lowest state (initial state) and forks on the loading platform 13. Place the roll paper 1 etc. with a lift etc. Then, by simply pressing the up button of the hand switch 16 (see FIG. 1), the roll paper 1 and the like can be easily rolled and loaded onto the loading platform 3 (on the roll paper 1 and the like arranged in a horizontal row). Yes (in this case as well, the bridge plate 4 is used as in the case of FIG. 9,
(Omitted in FIG. 7). Therefore, it becomes possible to easily load the second tier, which cannot be loaded by inserting the claws of the forklift in the related art. As a result, useless open space does not occur on the loading platform 3, and the amount of transportation per time is doubled.

In addition, the above cargo handling lifter uses one motor to simultaneously rotate and drive eight screw shafts A, B1 and B2, and has a very compact design.
90cm in width x 70cm in height, which is very small compared to the conventional lifter, and the weight of the device is only 70kg, so it is easy to put it on and remove it from the truck carrier 3.
It has the advantage of being easy to handle. In addition, although it is small, it can carry up to 2.5 tons of luggage, and can be applied to large rolls.

Further, the lift distance of the cargo handling lifter can be appropriately set by widening or narrowing the interval between the upper and lower two sensors (not shown) that read the initial position and the rising end position of the mounting table 13. .

[Effect of device]

As described above, according to the cargo handling lifter of the present invention, the mounting table rapidly rises due to the combination of the two types of screw shafts, and further, the mounting table tilts toward the unloading side during the ascending operation. At the end of the ascent, the luggage automatically rolls down to the unloading side. Therefore,
When loading vehicles such as wing vehicles that cannot be stacked in the conventional two-tiered vehicle in the height direction, simply place the cargo handling lifter at the end of the loading platform and place roll paper on the loading platform to operate. It is possible to easily carry out a two-stage loading operation without using a forklift.
Further, by applying this, it is possible to easily perform multi-stage stacking of various columnar bodies. As a result, it is possible to significantly improve the amount of one-time transportation in a vehicle having a ceiling such as a wing vehicle. Moreover, the cargo handling lifter of the present invention is designed so that two types of screw shafts extending in the vertical direction are rotationally driven by a single motor, and the whole is compact and lightweight. It has the advantage that it can be easily placed and unloaded on the platform and is easy to handle.

[Brief description of drawings]

1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA 'in FIG. 1, FIG. 3 is a sectional view taken along the line CC' in FIG. 2, and FIG. 1 is a sectional view taken along the line BB ', FIG. 5 is a sectional view taken along the line DD' in FIG. 4, FIGS. 6 (a) and 6 (b) are explanatory views of the operation of the above embodiment, and FIG. FIG. 8, FIG. 9, FIG. 9 and FIG. 10 are explanatory views of a conventional roll paper loading operation, and FIG. 11 is a conventional loading operation applied to a truck with a hood. It is explanatory drawing of a case. 1 ... roll paper, 11 ... base block, A, B1, B2 ... screw shaft, 13 ... mounting table, 20 ... motor

Claims (1)

[Scope of utility model registration request] 1. A cargo handling lifter which is used when stacking a columnar body in a horizontally laid state in multiple stages, the box-shaped lifter being movably supported by a plurality of vertically extending screw shafts A. A base block, and a mounting table having a concave upper surface, which is movably supported by the base block by a plurality of screw shafts B extending vertically in the base block.
A single motor arranged in the base block and capable of driving the screw shaft A and the screw shaft B to rotate simultaneously;
The rotation of the screw shafts A and B causes the base block and the mounting table to move up and down at the same time, and of the plurality of screw shafts B supporting the mounting table, the screw shaft B1 on the unloading side has the opposite rotation speed. It is set to be slower than the rotation speed given to the screw shaft B2, and the loading table that is normally placed horizontally is characterized in that the loading table inclines toward the unloading side with the rising operation. Cargo lifter to do.