JPH0313510Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is applicable to heavy objects such as steel plates, steel bars, or cargo that are suspended and transferred by a lifting device such as a hoist or a hoist. The present invention relates to a protective device (herein referred to as a protective device for hanging wires) for preventing damage to a hanging wire used for suspending a heavy object or a package of the heavy object.

[Prior art]

Conventionally, when transporting heavy objects such as steel plates, steel rods, or cargo to be handled by suspending them using a hoisting device such as a hoist or a hoist, it has been particularly difficult to remove the heavy objects from the hanging wires used to suspend the heavy objects. Or the simplest means to prevent the hanging wire or the corner of the heavy object from being severely damaged due to the pressing force applied to the corner of the heavy object package or the rubbing action of both. As a method, a method has been adopted in which pieces of waste rubber products such as vehicle rubber tires or rubber conveyor belts are interposed in the area where the two come into contact.

In addition to the above, for example, as shown in Figure 5, long wire ropes WR, WR,
On the outer surface of the middle part of..., a covering rubber layer CR, a first rubber covering thick woven canvas layer RF ₁ , a rubber covering wire layer
A protective member formed integrally with the rope WR by sequentially laminating RW, a second rubber-covered thick woven canvas layer RF ₂ , and an outer covering rubber layer OR, and then vulcanizing this laminate.
A wire W for hanging heavy objects equipped with SP is used.

[Problem to be solved] Among the above-mentioned known protective measures, the former is extremely inexpensive, but it takes time and effort to attach protective equipment made of waste rubber product fragments to designated locations each time the work is carried out. Furthermore, if the tension of the hanging wire becomes loose or the abutment position moves for some reason during work, the protective equipment will come off or fall off from the predetermined position, and the wire or the object will be damaged. There is a problem in that the corner portions of heavy objects to be transported may be broken or damaged.

On the other hand, even in the case of the latter suspension wire with a protective member, each time the wire is used repeatedly, the protective member of the wire comes into contact with the sharp corner of a heavy object to be transported, causing localized severe bending and tension. Due to the loading, the outer rubber layer OR wears out prematurely, and once a cut occurs in the layer OR, the cut grows rapidly, so that the inner second rubber-covered thick woven canvas layer
RF ₂ , the rubber-covered wire layer RW, and the first rubber-covered woven canvas layer RF ₁ are damaged one after another relatively quickly. Moreover, if the protective member is damaged,
There is also the problem that the hanging wire cannot be reused unless it goes through the time-consuming process of once stripping off the remaining protective member from the surface, wrapping the materials of the aforementioned layers again, and vulcanizing it.

Therefore, the present invention provides a solution to the above-mentioned problems with conventional wire protectors for hanging heavy objects, and has improved durability, as well as a wire for hanging heavy objects that can be easily attached and detached and easily repaired and replaced. The purpose is to provide protective equipment for

[Means for solving problems]

In order to achieve the above-mentioned purpose, the protective device for a heavy load hanging wire according to the present invention has an overall shape of approximately L.
It has a hollow part for passing a hanging wire therein, and an annular recess for attaching a fastener on the outer surface of both ends, and is based on an imaginary plane containing the axis of the hollow part. It is characterized in that it is formed so that it can be divided into two parts (see Fig. 1), and is made of a rubber elastic composition mixed with a large number of short cut filaments.

As mentioned above, the protective equipment of this invention is entirely composed of a rubber elastic composition mixed with a large number of short cut wire materials (preferably synthetic fibers such as aromatic polyamide and polyester, other glass fibers, wires, etc.). However, it is also possible to further strengthen the structure by embedding a required number of reinforcing fabric layers as needed. In addition,
When using short cut wires, in order to prevent the surface of the heavy object to be transported from being damaged due to the rubbing of the short wires exposed on the rubber surface of the protector during use, the wires should be cut as close to the heavy object as possible. Preferably, it is softer. In consideration of this, it is preferable to use short and small pieces of the synthetic fiber in the protective device of the present invention.

Wires for hanging heavy objects are usually used by arranging multiple wires in parallel, but depending on the weight of the object, a single wire may be used, so the cavity of the proposed protective equipment The portion is formed to have a volume sufficient to allow one or more of the wires to be inserted therethrough. In addition, the hollow part prevents the protective device from being damaged from the inside due to the rubbing action of the hanging wire inserted inside the hollow part or the piercing action of the locally cut end of the wire. Therefore, it is desirable that a hard reinforcing tool made of a metal material or hard plastic be attached along the peripheral wall surface of the cavity (see the fourth section).
(see figure). Furthermore, in order to allow the plurality of hanging wires to be inserted into the hollow portion in an orderly manner, the peripheral wall surface of the hollow portion is formed in a groove shape corresponding to the outer shape of the plurality of wires. (See Figure 3).

[Effect]

Since the proposed protective device is formed in half as described above, when applying it to a hanging wire, the protective device is first disassembled into two parts, and as a result, the protective device is formed on the inner surface of each divided body. After inserting the wire along the groove-shaped cavity, more precisely, into the cavity of one of the divided bodies, cover the remaining divided body to restore the original shape of the protective equipment. year,
When the tightening bands are fitted into the annular grooves for attaching fasteners formed at both ends of the protector thus attached and the two divided bodies are tightened, the operation of attaching the protector of the present invention is completed.

Next, the wire was hung on the heavy object so that the corner of the heavy object to be transferred was aligned with the L-shaped bent part of the protective device of the present invention attached to the hanging wire as described above, and The heavy object may be lifted using a driving mechanism such as a hoist or a hoist and transported to a predetermined location.

〔effect〕

As described above, in the protective device for a wire for suspending a heavy object according to the present invention, since the entire body is made of a rubber elastic composition containing short cut wire material, there is no friction with the corner of the heavy object to be transferred. Even if the rubber surface of the proposed protective device is scratched due to rubbing action or puncture by the locally cut end of the wire, the cut wire material prevents the scratch from growing deeper, and the protective device of the present invention can be quickly removed. This effectively prevents the device from becoming unusable.

In addition, in the present protector, since the part that should follow the corner of the heavy object is pre-formed in an L-shape, the bending and tensile loads acting on the bent part are reduced compared to the conventional protector for hanging wires. In addition, the durability is improved accordingly, and there is no need for special considerations such as using a particularly soft rubber composition or creating a structure that can exhibit flexibility, unlike conventional protective equipment.

Furthermore, if the proposed protective device becomes unusable due to damage, the protective device can be easily removed from the hanging wire by removing the fasteners.
By subsequently attaching a new protective device of the present invention, the wire can be reused immediately without the need for a troublesome remanufacturing process unlike conventional wires.

〔Example〕

Examples of the present invention will be described below.

FIG. 1 is a side view of a heavy load hanging wire protector according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. This example protective equipment 1
is a large number of aromatic polyamide fibers (“Kevlar”)
A cavity having an L-shaped side surface and formed inside using styrene-butadiene copolymer rubber mixed with short pieces 3, 3, etc. of product name), and also referring to Fig. 2. Virtual plane X including the axis of part 4
- Inner/outer divided body 2 formed in half along X
It consists of a and 2b.

Reinforcement layers 5a and 5b made of polyamide woven fabric are buried along the surface along the cavity 4 and the outer surface of the protective equipment 1, and annular grooves 6 and 6 for attaching fasteners are provided at both ends thereof, respectively. It is formed. Incidentally, when in use, metal fastening bands (not shown) are fitted into each of the grooves 6 to connect the divided bodies 2a, 2b.
be closely combined.

In order to use the protective equipment 1 of this example configured as described above, first remove the fastening band (not shown), disassemble the inner and outer divided bodies 2a and 2b along the dividing plane Y-Y, and then As shown by the dotted lines in FIG. 2, four hanging wires W,
After fitting W,... in parallel, the other divided body 2
a or 2b are combined, and the fastening bands (not shown) are attached to the grooves 6 for attaching each band, thereby completing attachment to the hanging wire W. Finally, a hanging wire is hung along the corner of the heavy object P to which the protective equipment 1 is to be transferred, and the heavy object P is hoisted and transferred by a driving mechanism such as a hoist or a hoist. . Note that if the protective equipment 1 of this example is damaged and becomes unusable, the wire W can be removed by removing the fastening band (not shown) as described above.
It can be easily removed from the top.

FIG. 3 is a sectional view similar to FIG. 2 of a protective device according to another embodiment of the present invention, and in this example, the peripheral wall surface of the cavity 4 corresponds to the outer shape of the hanging wire W to be inserted. It differs from the previous example in that it is formed in the shape of a plurality of concave grooves parallel to each other, and with this structure, each wire W can be inserted into the cavity 4 in an orderly manner without being twisted.

FIG. 4 is a cross-sectional view similar to FIGS. 2 and 3 of a protective device for a heavy load hanging wire according to yet another embodiment. This embodiment differs from the previous examples in that stainless steel covers 7a and 7b are embedded along the surface.

[Effect of idea]

As described above with examples, the present invention has the following features:
The entire protective device for a wire for hanging heavy objects is constructed from a rubber elastic composition mixed with a large number of short cut wire materials, and the protective device is bent in advance into an L-shape and formed so that it can be divided. Accordingly, it is possible to provide a protector for a wire for suspending a heavy object, which has improved durability, is easy to attach and detach, and can be easily repaired and replaced.

[Brief explanation of the drawing]

FIG. 1 is a side view of a heavy load hanging wire protector according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is another embodiment of the present invention. A sectional view similar to FIG. 2 of a protective device according to an example, FIG. 4 a sectional view of a protective device according to yet another embodiment, and FIGS. and a cross-sectional view. The meanings of the symbols in each figure are as follows: 1: Entire protective equipment, 2a: Outer divided body, 2b: Inner divided body, 3: Short piece, 4: Hollow part, 5a, 5b:
Reinforcement layer, 6: Concave groove for attaching fasteners, 7a, 7b: Stainless steel cover, P: Heavy object, X-X: Virtual plane including axis of cavity 4, Y-Y: Divided body 2
Dividing surface of a and 2b, W: hanging wire,
SP: Protective member, CR: Coated rubber layer, RF ₁ : First rubber coated thick woven canvas layer, RF ₂ : Second rubber coated thick woven canvas layer, RW: Rubber coated wire layer, OR: Outer rubber coat layer , WR: wire rope.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The overall shape is approximately L-shaped, with a hollow portion inside for passing a hanging wire, and annular recesses on the outer surface of both ends for attaching fasteners. and is formed so as to be divided into two parts based on an imaginary plane including the axis of the cavity, and is made of a rubber elastic body composition mixed with a large number of short cut wire materials. Protective equipment for heavy lifting wires. (2) For a wire for suspending a heavy object according to claim 1, wherein the hollow portion through which the suspension wire is inserted has a sufficient volume to allow a plurality of wires to be inserted in parallel. Protective equipment. (3) For heavy object suspension wires according to claim 1 or 2 of the utility model registration claim, wherein the hollow portion through which the suspension wire is inserted is provided with a hard reinforcing device along its peripheral wall surface. Protective equipment. (4) A request for utility model registration in which the peripheral wall surface of a hollow portion through which hanging wires are inserted is formed into a groove shape corresponding to the outer shape of a plurality of wires that are inserted in parallel inside the hollow portion. A protective device for a heavy load hanging wire according to item 1 or 2.