JP2002087754A - Sling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sling light, good in working property, portability and durability, and allowing loading/unloading operation without damaging a load. SOLUTION: Two link chains 2 are inserted through two link chain insertion through parts 6 formed to go through covers 3 with a designated interval, under a condition of keeping the two link chains 2 in parallel with a designated interval. When a pallet 10 is hanged as a basket with using a sling 1, the sling 1 can be inserted through from one side of the pallet 10 toward other side straightly. Consequently, it is effectively prevented without using a corner pad to damage the pallet 10 or a load 9 or to deteriorate durability of sling 2 from wear.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sling, and more particularly to a sling suitably used for hanging a basket.

[0002]

2. Description of the Related Art Conventionally, chain slings have been widely used in cargo handling operations. Chain slings are usually equipped with ring-shaped couplings at both ends of the link chain, and while hanging the link chain around luggage, attaching the coupling to the master link as necessary, hooking it on the hook,
Cargo work such as lifting luggage is performed.

[0003]

However, using such a chain sling, for example, after inserting a link chain between pallets or the like, attaching the couplings at both ends to hooks, so-called basket hanging, etc. When performing work, when inserting the link chain from one side to the other side between pallets, the link chain is distorted suddenly, so it is difficult to insert straight into the other side, There is a problem that it takes time.

In addition, since the link chain abuts on the corner of the luggage in a bent state, during lifting, the corner between the luggage and the bent portion of the link chain rubs against each other.
There is a problem that the luggage is damaged, or the link chain is deformed and worn to reduce durability. on the other hand,
In order to prevent such a situation, a corner pad may be applied to the corner of the luggage, but there is a problem that the workability is reduced.

Further, for example, when lifting a load of a predetermined weight, it is necessary to ensure the strength of the link chain conforming thereto, so that the weight of the link chain itself becomes heavy, and workability and portability are increased. Is caused.

SUMMARY OF THE INVENTION The present invention has been made to solve all of the above problems, and it is an object of the present invention to be lightweight, excellent in workability, portability, and durability, and without causing damage to luggage. To provide a sling that can be used for cargo handling.

[0007]

In order to achieve the above object, the invention according to claim 1 comprises a link chain and a covering member having flexibility and elasticity for covering the link chain along a longitudinal direction. Wherein the plurality of link chains are covered by the covering member.

According to such a configuration, since the plurality of link chains are covered with the covering member, for example,
When the sling is inserted between the luggage, the covering member can restrict the link chain from being distorted. Therefore, the sling can be linearly inserted from one side of the luggage to the other side, and the efficiency of cargo handling such as hanging a basket can be improved.

Further, even when the sling abuts on the corner of the load, the link chain does not directly abut on the corner, but the covering member having flexibility and elasticity abuts. Therefore, a corner pad or the like is used. Even if it is not provided, it is possible to effectively prevent the load from being damaged or the link chain being deformed and worn to lower the durability. Also,
Even if the covering member is worn, it can be used again only by replacing the covering member, so that the durable life is long and the running cost can be reduced.

[0010] In addition, since a plurality of link chains are used in the sling, the sling can be made lighter than a single link chain even with the same load resistance. Therefore, workability and portability can be improved. In addition, since the combination of the link chain and the covering member is used, there is little elongation or reduction in proof stress against a load.

The invention described in claim 2 is the first invention.
In the invention described in the above, a plurality of the link chains,
It is characterized by being covered with the covering member in a state of being parallel to each other at a predetermined interval.

According to such a configuration, since the plurality of link chains are covered with the covering member in parallel with a predetermined interval therebetween, the sling can be formed in a flat shape. Therefore, even when the insertion portion of the load is narrow, the sling can be satisfactorily inserted from one side of the load to the other side. Also, in the contact portion between the corner of the luggage and the sling, the flattened portion,
As the contact area can be increased, the pressing forces pressed against each other can be reduced,
Slip is prevented and a stable contact state can be ensured. Therefore, it is possible to further prevent the load from being damaged or the link chain from being deformed and worn, and it is possible to secure a stable cargo handling operation with less slippage.

[0013]

FIG. 1 is a front view showing an embodiment of the sling of the present invention, FIG. 2 is a side view of a cover thereof, and FIG. 3 is a perspective view showing a use state thereof. The sling of the present embodiment will be described with reference to FIGS.

In FIG. 1, the sling 1 includes two link chains 2, a cover 3 as a covering member for covering the link chains 2, a connecting link 4 attached to both ends of each link chain 2, and A coupling 5 to which the coupling link 4 is attached.

Each of the two link chains 2 is a flexible chain member in which a vertical link 2a and a horizontal link 2b (see FIG. 2) are linearly connected. Are covered by a cover 3 described below in parallel with each other at a predetermined interval.

The cover 3 has a substantially rectangular flat shape extending in the longitudinal direction, is formed to be slightly shorter than the length of each link chain 2, and has a rubber material having flexibility (bending property) and elasticity. Is formed from.
Further, as this rubber material, a material having heat resistance and having a small decrease in elongation and proof stress is used. Further, as shown in FIG. 2, the side chain shape is substantially rectangular, and the link chain insertion portions 6 for inserting the two link chains 2 are provided at predetermined intervals in the width direction of the cover 3. Are formed at intervals.

As shown in FIG. 1, the link chain insertion portions 6 are opened corresponding to the respective link chains 2 so as to penetrate the cover 3 in the longitudinal direction of the cover 3 in parallel at a predetermined interval. Is formed. As shown in FIG. 2, the link chain insertion portion 6 includes a vertical link insertion portion 7 and a horizontal link insertion portion 8 for inserting the vertical link 2a and the horizontal link 2b of each link chain 2 respectively. , The vertical link insertion section 7 and the horizontal link insertion section 8
Are formed so as to intersect in a substantially X-shape with respect to the width direction of the cover 3.

As described above, the link chain insertion portion 6 is
If the vertical link 2a and the horizontal link 2b of each link chain 2 are formed by the vertical link insertion portion 7 and the horizontal link insertion portion 8, respectively, the link chain 2 rotates in the link chain insertion portion 6. It is possible to prevent the link chain 2 from being twisted or deformed when the link chain 2 is inserted into the link chain insertion portion 6 or when the load from the load 9 is received. Also,
By forming such a link chain insertion portion 6 in a substantially X-shape in the width direction of the cover 3, the cover 3
The load from the luggage 9 can be received more stably than when the sling 1 is formed in a substantially cross shape in the width direction of the sling 1.
Can be prevented, and a more stable cargo handling operation can be secured.

In the sling 1, each link chain 2 is inserted into each link chain insertion portion 6 of the cover 3, and ring-shaped connecting links 4 are provided at both ends of each link chain 2 exposed from the cover 3. Each is attached. That is, two connecting links 4 are attached at both ends of each link chain 2, so that a total of four connecting links are attached to the two link chains 2. The two connecting links 4 attached to one end of the two link chains 2 are attached to one and the same ring-shaped coupling 5 and the other end of the two link chains 2 The two coupling links 4 attached to the part are likewise attached to one and the same ring-shaped coupling 5.

The sling 1 thus constructed is
For example, as shown in FIG. 3, a pallet 10 on which a load 9 is loaded is used for hanging a basket. That is, in order to suspend the pallet 10 in a basket using the sling 1, first, as shown in FIG. 4, the sling 1 is placed between the upper surface and the lower surface of the pallet 10 from one side to the other side. Through. At this time, the cover 3 regulates that the two link chains 2 are inserted into the link chain insertion portions 6 formed in the cover 3 and the link chains 2 are distorted. Therefore, the pallet 10 can be linearly inserted from one side to the other side. Therefore, it is possible to secure a smooth operation and to improve the efficiency of the cargo handling operation.

Next, both ends of the sling 1 inserted between the pallets 10 are lifted and bent upward, and the two couplings 5 attached to the both ends are connected to hooks of a crane or a chain block. If the hook 12 is hooked, the load 9 can be lifted up with the pallet 10 via the sling 1 by a crane or a chain block. Note that FIG. 3 shows a state in which the pallet 10 is suspended in a basket by using two slings 1. Also, the coupling 5 is not directly hooked on the hook 12, for example, the coupling 5
May be attached to the ring-shaped master link, and the master link may be attached to the hook 12.

When the sling 1 is lifted, the sling 1 contacts the corners of the pallet 10 and the load 9 in a bent state.
The pallet 10 and the baggage 9 may be damaged due to the friction between the corner of the sling 1 and the bent portion of the sling 1. In addition, the sling 1 may be worn and durability may be reduced. However, in the sling 1, even if the sling 1 comes into contact with the pallet 10 or the load 9, the link chain 2
The pallet 10 and the baggage 9 are damaged or the sling 2 is worn without using a corner pad or the like, so that the cover 3 having the flexibility and elasticity comes into contact with the cover 3 without direct contact. It is effectively prevented that the property is lowered. Further, even if the cover 3 is worn, if only the cover 3 is replaced, the link chain 2 can be used again, so that the durable life is long and the running cost can be reduced. Since the sling 1 has a structure in which each link chain 2 is only inserted into the cover 3, even when the cover 3 alone is replaced,
It can be performed easily and maintenance is simplified.

Moreover, in the sling 1, since the two link chains 2 are covered with the cover 3 in a state of being parallel to each other with a predetermined space therebetween, and formed in a flat shape, the space between the pallets 10 is narrow. Even if this sling 1
Can be satisfactorily inserted from one side of the pallet 10 to the other side. Further, the contact area between the corner of the pallet 10 or the baggage 9 and the sling 1 and the sling 1 can be flattened and the contact area can be increased, so that the pressing forces pressed against each other can be reduced. At the same time, slip is prevented and a stable contact state can be ensured. Therefore, it is possible to further prevent the pallet 10 and the load 9 from being damaged or the sling 1 from being worn, and it is possible to secure a stable cargo handling operation with less slippage.

When a load 9 having a predetermined weight is lifted, it is necessary to use a link chain 2 having a load-bearing capacity adapted to the weight of the load 9. When lifting 9, it is necessary to ensure the strength of the link chain 2 that conforms to it, so that the weight of the link chain 2 itself becomes heavy, and workability and portability may decrease. However, since the two link chains 2 are used in the sling 1, even if the load capacity is the same, the sling is manufactured to be lighter than the one link chain 2, and the workability is improved. And portability is improved.

Further, since the sling 1 is a combination of the link chain 2 and the rubber cover 3, the elongation against load and the reduction in proof stress are small. For example, when the cover 3 is formed of a rubber material having heat resistance. , 2
Even at a high temperature of 00 ° C. or more, it can be used as the sling 1 with little elongation and decrease in proof stress.

Such a sling 1 can perform a good cargo handling operation in, for example, the above-mentioned lifting work of pallets, mocks, fences, and other heavy objects. It can be suitably used in various factories such as concrete factories and paper mills, and in weight transport.

In the above-described sling 1, two link chains 2 are used. However, as long as the number is two or more, the number is not particularly limited, and the sling 1 is used. What is necessary is just to select suitably according to the objective and use. For example, FIG. 5 shows a sling 1 in which four link chains 2 are used. FIG.
, The same members as those described above are denoted by the same reference numerals. That is, in the sling 1, four link chains 2 are parallel to each other at a predetermined interval, and are inserted into four link chain insertion portions 6 formed at a predetermined interval in the width direction of the cover 3. , Respectively. When the four link chains 2 are used, the cover 3 is formed more flat than when the two link chains 2 are used. In the contact portion, the contact area can be increased by the flattening, so that the pressing force pressed against each other can be further reduced, and slip is more prevented and a stable contact state is secured. can do. Therefore, it is possible to further prevent the pallet 10 and the load 9 from being damaged or the sling 1 from being worn, and it is possible to further ensure a stable cargo handling operation with less slippage.

Further, in the sling 1 described above, the cover 3 is formed of a rubber material. For example, as shown in FIG. It may be formed of a reinforced rubber or a reinforced plastic reinforced by a reinforcing material 13 such as a wire cord. Further, the cover 3 has elasticity and flexibility as described above, and the pallet 10
There is no particular limitation as long as it can be inserted in a straight line when inserted between them, but for example, it may have a certain degree of flexibility so that it can easily follow the load. .

Further, the shape of the cover 3 is not limited to the above-mentioned shape at all. For example, FIGS.
May be as shown in FIG. That is, as shown in FIG. 7, the cover 3 is formed with substantially cylindrical members extending in the longitudinal direction corresponding to the number of the link chains 2, and as shown in FIG. The members are formed in a substantially eyeglass shape such that the members are connected in the width direction. Thus, the link chain insertion portion 6 for inserting each link chain 2 is formed in a cylindrical shape for each link chain 2. With such a cover 3, molding is easy, cost can be reduced, and frictional resistance when each link chain 2 is inserted is small, and efficient production and replacement of the cover 3 are performed. Can work.

[0030]

As described above, according to the first aspect of the present invention, the luggage can be inserted linearly from one side to the other side, and a cargo handling operation such as a so-called basket hanging operation can be performed. Efficiency can be improved. Further, it is possible to effectively prevent the load from being damaged or the link chain being deformed and worn to lower the durability. Furthermore, even if the covering member is worn, it can be used again only by replacing the covering member, so that the durable life is long,
In addition, the running cost can be reduced.
Moreover, even with the same load resistance, the link chain can be manufactured to be lighter than using one link chain, and the workability and portability can be improved. In addition, since the combination of the link chain and the covering member is used, there is little elongation or reduction in proof stress against a load.

According to the second aspect of the present invention, the sling can be satisfactorily inserted from one side of the load to the other side even when the insertion portion of the load is narrow. Further, it is possible to further prevent the load from being damaged or the link chain from being deformed and worn, and it is possible to secure a stable cargo handling operation with less slippage.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a sling of the present invention.

FIG. 2 is a side view of a cover of the sling shown in FIG. 1;

FIG. 3 is a perspective view showing a use state of the sling shown in FIG. 1;

FIG. 4 is an explanatory view of a relevant part showing a state in which the sling is inserted into a pallet when the basket is hung by the sling shown in FIG. 1;

FIG. 5 is a side view of a cover of a sling (in which four link chains are used) according to an embodiment different from the sling shown in FIG. 1;

FIG. 6 is a side view of the cover in FIG. 2 showing a state where the cover is reinforced by a reinforcing material.

FIG. 7 is a front view showing a sling (a cover is formed in a substantially eyeglass shape) of an embodiment different from the sling shown in FIG. 1;

FIG. 8 is a side view of the cover of the sling shown in FIG. 7;

[Explanation of symbols]

 1 sling 2 link chain 3 cover

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Koji Saai 2-180 Iwamuro, Sayama-shi, Osaka Elephant In-chain block Co., Ltd. F-term (reference) 3F004 EA21 LA02 LB03 LC06

Claims (2)

[Claims] 1. A link chain, comprising: a cover member having flexibility and elasticity for covering the link chain along a longitudinal direction, wherein a plurality of the link chains are covered by the cover member. And a sling. 2. The sling according to claim 1, wherein a plurality of the link chains are covered by the covering member in a state of being parallel to each other at a predetermined interval.