JPH1045374A - Drum suspending device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably hold a drum and easily suspend it by rotating a suspending metal fitting, whose mutually hooking part is suspended by a suspending member, with a shaft support pin as the center, and sliding a second arm in the hook part direction of a first arm. SOLUTION: In a condition where a suspending metal fitting 5 is rotated in the anticlockwise direction, first and second arms 3 and 4 are run along a side surface of a drum can 30, and next, when the suspending metal fitting 5 is rotated in the clockwise direction, the second arm 4 slides in the hook part 3a direction of the first arm 3, and both end edge parts 31 and 31 of the drum can 30 are held by hook parts 3a and 4a. When the suspending metal fitting 5 is put in an almost vertical condition to the first arm 3, an inside end part of the second arm 4 to engage with the suspending metal fitting 5 comes into contact with a shaft support pin 2, and cannot slidingly move more than that in the hook part 3a direction of the first arm 3. When a wire 25 connected to the suspending metal fitting 5 is pulled up in this condition, the drum can 30 can be raised.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum can lifting device used when a drum or the like is lifted and transported by a lifting member such as a wire.

[0002]

2. Description of the Related Art In general, in order to transport drums and stack them in a bale, or to transport drums stacked in a bale to another place, the drums are handled in a horizontal state. As a drum can lifting device that handles the drum in a horizontal state, the drum can is lifted and conveyed by, for example, putting a sling on the drum and lifting the sling with a hook of a crane.

[0003] Further, as shown in FIG.
After clamping both end portions 31, 31 of the drum 30 at 0, 20, the drum 25 is lifted by using a hook or the like of a crane to lift a wire 25, which is a lifting member provided between the clamps 20, 20. The clamp 20 includes a U-shaped clamp body 22 and a locking member 21 pivotally supported by the clamp body 22. Then, after inserting the biting opening of the clamp body 22 into the edge 31 of the drum 30,
When the wire 25 passed through the eyeball portion is lifted upward, the edge portion 31 of the drum 30 is brought into a state of being bitten by the engaging member 21 and the clamp body 22. Therefore, the clamp 20 does not come off easily.

Further, as another example, a pair of V-shaped jigs 23 as shown in FIG.
Of the jigs 23, 31
There is a type in which an intermediate portion of a wire 25 provided between the hooks 23 is lifted by a crane hook or the like. In this case, both jigs 2
Since a component force in the gripping direction acts on the wires 3 and 23 by the tension of the wire 25, the jig 23 does not come off accidentally while the weight of the drum can is being loaded.

[0005]

However, when the drum can is hung by the sling as described above, it is necessary to pass the sling under the drum in a laid state, so that one of the drum cans must be lifted, and so on. The work was difficult. The clamp 2 shown in FIG.
In the case where the wire 25 is held between the edges 31 of the drum 30 and used, the tension of the wire 25 is applied to each clamp 20 when the intermediate portion of the wire 25 laid between the clamps 20 is lifted by a hook of a crane. Acts obliquely upward, and a strong bending force acts on both edge portions 31, 31 of the drum 30 sandwiched between the clamps 20, 20. Therefore, if the weight of the drum can is large, the edge portions 31, 31 of the drum 30 may be deformed, and the product value of the drum 30 may be lost.

Further, V-shaped jigs 23, 2 shown in FIG.
In the case where the jigs 3 are used by being hung on both end edges 31 of the drum 30, when the intermediate portion of the wire 25 laid between the jigs 23 is lifted by a hook of a crane, each jig is used. Since a component force in the clamping direction acts on the wire 23 due to the tension of the wire 25 or the like, the tip of each jig 23 may strongly contact both end surfaces of the drum 30 and deform both end surfaces of the drum 30. In addition, since each jig 23 is only hung on both end edges 31, 31 of the drum 30, if the jig 23 collides with another member during lifting, the drum 30 falls off from each jig 23. there is a possibility. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a drum can lifting device which has a simple structure and can reliably hold and easily lift the drum.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a lifting device having a suspension portion connected to a lifting member, and a first arm rotatably supporting the lifting device by a pivot pin. A second arm engaged with the swinging end opposite to the suspension unit, gripping means for gripping the first arm and the second arm so as to be slidable in the longitudinal direction, And a hook provided at each outer end of the second arm, wherein the lifting bracket whose lifting portion is lifted by a lifting member rotates the pivot pin about the support arm to rotate the second arm. This is achieved by a drum lifting device characterized in that the hooks of each arm hold both end edges of the drum by sliding in the direction of the hooks of the first arm.

According to the above construction, when the lifting metal is turned to a state substantially perpendicular to the first arm, the second arm slides in the direction of the hook of the first arm. The distance between the leading ends of the drum cans is reduced, and the hooks hold both end edges of the drum. When the lifting bracket is substantially perpendicular to the first arm, the second arm cannot slide with respect to the first arm. Therefore, the distance between the tips of the hook portions does not increase or decrease.

[0009]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of a drum can lifting device 1 according to one embodiment of the present invention. The drum lifting device 1 is a plate-shaped lifting metal 5 having an opening 11 as a hanging portion connected to a lifting member such as a hook or a wire of a crane, and the lifting metal 5 is rotatable by a pivot pin 2. Elongate first arm 3 which is supported by
And a long second arm 4 engaged with the swinging end of the arm. Further, hook portions 3a and 4a which are U-shaped hook portions are provided at outer end portions of the first arm 3 and the second arm 4, respectively.

The lifting bracket 5 and the first arm 3
Are provided with through holes 5 and support holes 9 for inserting the pivot pins 2 respectively. Thus, for example, after the pivot pin 2 is inserted through the through hole 5 and the support hole 9, the lifting bracket 5 is rotatably supported by the first arm 3 by caulking the pivot pin 2. The pivot pin 2 is
The first arm 3 may be provided in advance.

On the swinging end of the lifting metal fitting 5 opposite to the opening 11, a support shaft 7 is vertically provided.
Is inserted, the second arm 4 is rotatably engaged. Of course, the support shaft 7 is formed separately, and the lifting bracket 5 is formed.
And the second arm 4 may be rotatably caulked and fixed.
Further, the first arm 3 has a substantially rectangular cross-sectional space, and gripping means 6a, 6 which can grip the second arm 4 inserted in the space so as to be slidable in the longitudinal direction.
b is integrally formed. Then, as shown in FIG. 2, the second arm 4 is relatively slid in the longitudinal direction with respect to the first arm 3 by rotating the lifting bracket 5 about the pivot pin 2.

On the other hand, the drum 30 has a top plate 30b and a bottom plate 30c mounted on a generally cylindrical main body 30a.
The entire periphery of the top plate 30b and the bottom plate 30c is caulked to both ends of the main body 30a, and the edge portions 31 are formed so as to protrude from the outer peripheral edges of both ends of the main body. Therefore, the length of the first arm 3 and the second arm 4 is set in advance in accordance with the dimension of the drum 30 to be lifted. At this time, the lifting metal 5 is in a state perpendicular to the first arm 3. Then, each hook portion 3 of the first arm 3 and the second arm 4
The distance between the leading ends of the a and 4a is smaller than the distance between the leading ends of both edge portions 31 of the drum 30, and the top plate 30b
And is set to be wider than the interval D between the bottom plate 30c and the bottom plate 30c.

Hereinafter, the operation of the drum can lifting device 1 will be described. First, as shown by the broken line in FIG.
The first arm 3 and the second arm 4 are made to extend along the side surface of the drum 30 in a state where the lifting bracket 5 is rotated counterclockwise in the drawing. At this time, each hook 3a,
Since the distance between the tips of 4a is wider than the distance between the ends of both edges 31 of the drum 30, each hook 3a, 4a must be located on the inner side of each edge 31. Can be.

Next, the lifting metal 5 is rotated clockwise in the figure until the lifting metal 5 is substantially perpendicular to the first arm 3. Then, since the second arm 4 slides in the direction of the hook 3a of the first arm 3, the distance between the tips of the hooks 3a, 4a is reduced, and the hooks 3a, 4a are located at both edges of the drum 30. The parts 31, 31 are held.

When the lifting metal 5 is substantially perpendicular to the first arm 3, the second arm 4 cannot slide with respect to the first arm 3.
Furthermore, in the present embodiment, the inner end of the second arm 4 that engages with the lifting hardware 5 abuts on the pivot pin 2. Therefore, the second arm 4 cannot further slide in the direction of the hook 3a of the first arm 3, and the tips of the hooks 3a, 4a are pressed against the top plate 30b and the bottom plate 30c of the drum 30. I will not do it. In addition, the first arm 3 and the second arm 4 are manufactured so as to correspond to the dimensions of the drum 30 to be suspended in advance.

In this state, when the wire 25 connected to the lifting bracket 5 is pulled up, both edge portions 31, 31 are lifted.
The drum 30 held by the hook portions 3a and 4a is lifted. At this time, only a vertical force acts on both end edges 31, 31 held by the hooks 3a, 4a, and a strong bending force due to an oblique lifting force or a strong clamping force may not act. Absent. Accordingly, the drum can lifting device 1 deforms both end edges 31, 31,
The value of the drum 30 is not lost.

While the drum 30 is being lifted,
The lifting metal 5 is maintained perpendicular to the first arm 3 by the weight of the drum 30 and the sliding movement of the second arm 4 in the longitudinal direction is prevented, so that the lifting arm 5 collides with other members during the lifting. Even if it does, the drum 30 will not fall off the drum lifting device 1 and fall. Therefore, the drum can lifting device 1 can hold the drum 30 securely and can be easily lifted while having a simple structure with a small number of parts.

When the tension of the wire connected to the lifting bracket 5 is released by lowering the drum, the lifting bracket 5 which is substantially perpendicular to the first arm 3 can be rotated counterclockwise in the figure. it can. Then, since the second arm 4 slides in the direction opposite to the hook 3a of the first arm 3, the distance between the tips of the hooks 3a, 4a increases, and the hooks 3a, 4a
0 is disengaged from the edge portions 31, 31 at both ends.

It should be noted that the drum lifting apparatus of the present invention is not limited to the shapes and configurations of the lifting hardware, the first arm, the second arm, the gripping means, the hooks and the like in the above-described embodiment, but may be applied in various forms. Needless to say, it can be taken. For example, an elastic body such as rubber or synthetic resin may be fixed to the drum can contact portion of the hook portion to prevent the drum can from being damaged.

Further, the gripping means 6a,
6b, the first arm 3 is provided with a substantially rectangular cross-sectional space, and the second arm 4 is inserted through the space, thereby enabling the first arm 3 and the second arm 4 to relatively slide in the longitudinal direction. However, a substantially rectangular cross section space may be provided in the second arm 4 and the first arm 3 may be inserted into the space. Of course,
The gripping means may be formed separately from each arm.

Further, the gripping means for slidably gripping the other arm does not necessarily have to form a substantially rectangular cross-sectional space, and can prevent both arms from shifting from each other in the width direction and the thickness direction. Any shape is acceptable. Therefore, for example, a pair of hook-shaped gripping pieces may be provided at both ends in the width direction of one arm, and the other arm may be gripped relatively slidably in the longitudinal direction.

Also, by providing a guide groove extending in the longitudinal direction on one of the first and second arms and providing a slidable fitting portion fitted into the guide groove on the other arm. Alternatively, gripping means for gripping the first arm and the second arm so as to be relatively slidable in the longitudinal direction may be configured.

[0023]

As described above, the drum can lifting apparatus according to the present invention can be set on the drum by itself, and only the vertical force to the drum can is applied to the hook of the drum can lifting apparatus. Since it acts, it does not exert a strong bending force on both edges of the drum and does not deform or break the edges. In addition, while the drum can is being lifted, the lifting bracket is maintained perpendicular to the first arm by the weight of the drum can, and the second arm is prevented from sliding in the longitudinal direction. Even if the drum can collides with another member, the drum can does not fall off the drum lifting device. Therefore, it is possible to provide a drum can lifting device which has a simple structure and can reliably hold and easily lift the drum.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a drum can lifting device according to an embodiment of the present invention.

FIG. 2 is a front view of the drum lifting apparatus shown in FIG.

FIG. 3 is a schematic view of a lifting device using a conventional clamp.

FIG. 4 is a schematic diagram of a lifting device using a conventional jig.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drum can lifting device 2 Axle support pin 3 First arm 3a Hook 4 Second arm 4a Hook 5 Lifting bracket 6 Holding means 7 Support shaft 11 Opening (hanging portion) 22 Wire (hanging member) 30 Drum can

Claims (1)

[Claims] A lifting arm provided with a hanging portion connected to the lifting member; a first arm rotatably supporting the lifting metal by a pivot pin; and a swing opposite to the hanging portion. A second arm engaged with the end, gripping means for gripping the first arm and the second arm so as to be slidable in a longitudinal direction, and provided at each outer end of the first arm and the second arm. A lifting portion having a hanging portion lifted by a lifting member, the lifting metal pivoting about the pivot pin to slide the second arm toward the hook portion of the first arm. A hook portion of each arm holds both end edges of the drum can.