JPH05105386A - Automatic slinging device for roll - Google Patents

Abstract

PURPOSE:To save manpower in a preferable manner by providing a spring cylinder on the end of a lifting frame which is axially attached to a sling frame, mutually connecting intermediate parts of roll slinging wire ropes with an end member which is always subjected to opening force by the spring of the spring cylinder, and providing a torque limiter for the wire of a winch. CONSTITUTION:Wire ropes 4 of an electrically driven winch 10 are connected to the ends of lifting booms 7 from respective ends of a sling frame 3. Each lifting boom 7 is made up of shrinkably fitted pipe members, and the coil spring 8 of a spring cylinder 18 fixed to the lower end of the lifting boom 7 is connected to the flange portion 14 of an end member 13 which is attached to the connecting member 12 of a roll slinging wire rope 2. Using the electrically driven which 10, the ropes 2 can be slung over both end sides of a roll 1 by simply opening and closing the lifting booms 7. When the roll 1 is lifted up by crane, the lifting booms 7 are displaced into a state where the upper parts of the ropes 2 are brought close to each other. When the roll 1 is lifted up, the wire ropes 4 are stretched, a torque limiter 9 slips against a set torque, and the wire ropes 2 are unwound from a drum 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic sling hanger, and it is an object of the invention to provide a sling hanger which can safely and accurately sling a roll by one crane operator. Is.

[0002]

2. Description of the Related Art A roll, which is conventionally placed on a roll stand as a roll suspender, is fixed to four suspension shelves on a suspension frame by a crane hook or the like, and hooks are attached to these shuckles, respectively. One nylon sling is suspended by two such hooks, and two nylon slings that suspend both ends of the roll by a total of four hooks are used to suspend the target roll.

Further, in the original specification of the application of Japanese Utility Model Application No. 55-69525, which was published in Japanese Utility Model Application Laid-Open No. 56-173584, as shown in FIG. 6, the roll 1 accommodated in the roll stand 20 is shown in FIGS. 7 and 8. It is disclosed that hoisting is carried out by a hoisting tool 21 as shown, that is, two sets of two shackles 22 which are one set are welded and fixed to a frame 23 hoisted by a crane hook or the like at an interval corresponding to a roll hoisting position. The hooks 24 are attached to these shackles 22, and the ends of the wire ropes are respectively hung from the hooks attached to the one set of shackles.
It has been proposed that the wire rope 25 be moved to the position of the neck portion of the roll 1 by a crane as shown in FIG. 1 and then the wire rope on the opposite side be slung on the roll neck portion by a slinging worker.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the case of the prior application technology disclosed in 173584, the crane side worker for moving the wire rope to the roll neck portion and the wire rope detaching work for slinging the opposite wire rope on the roll neck portion by the sling person Therefore, a crane driver and a sling operator for wire rope attachment / detachment are required for each one.

In this case, the shackle 22
Is fixed by welding at an interval corresponding to the roll lifting position, so the length dimension of the roll that can be lifted is fixed.Therefore, prepare a plurality of roll lifting tools according to the roll length. It is necessary to change and adopt.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been studied to solve the above-mentioned problems in the conventional ones, and the hoisting and lowering operations of the crane are performed while swinging the lifting boom for holding the roll hanging wire rope. With the combination of the above, the roll suspending wire rope is guided to the roll suspending position, the roll is securely slung in the stable state, and the automatic roll sling which achieves effective labor saving is achieved, and is as follows.

It has a wire rope for hanging a roll and a suspender frame in which a unit incorporating a retractable boom is attached to the end of the wire rope at appropriate intervals, and the unit is attached to the suspender frame. A winch that can be raised and lowered and an operation wire for operating the lifting boom are provided, and a tip tube provided between the intermediate portions of the wire ropes described above is provided at the tip of the lifting boom, and is constantly pushed by the bar inside the tip tube. Connecting the end member receiving the opening force to the wire rope,
A roll automatic sling hanger in which a torque limiter is provided for the operation wire.

[0008]

The present invention has a wire rope for suspending a roll and a suspender frame to which a unit incorporating a retractable boom is attached to the tip of the wire rope at appropriate intervals. By providing a winch that can be raised and lowered and an operation wire for operating the raising and lowering boom, the above-mentioned wire rope portion can be appropriately operated to perform loading and unloading of the roll.

At the tip of the elevating boom, there is provided a wire-barrel provided between the intermediate portions of the wire rope, and an end member which is constantly pushed by the wire-barrel inside the wire-barrel is connected to the wire rope. As described above, when loading or unloading the wire rope with respect to the roll as described above, an expanding force is constantly applied to the middle part of the wire rope to facilitate loading and unloading of the roll, prevent twisting of the wire rope, etc. In some cases, the wire rope is properly formed in a drawn state with respect to the roll neck.

By arranging the torque limiter for the above-mentioned operation wire, the operation by the above-mentioned operation wire can be effectively achieved with preferable moderation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, a geared motor 1 is provided on a hanger frame 3 as shown in FIG.
1, an electric winch 10 composed of a torque limiter 9 and a wire drum 5 is provided, and wire ropes 4 drawn out from the wire drum 5 of the electric winch 10 are provided at both ends of the hanging tool frame 3 as shown in FIG. It is connected to the tip of the elevating boom 7 via a wire sheave 6.

As shown in FIG. 4, the lifting boom 7 is formed of square members 7a and 7c, and is pivotally attached to the suspension frame 3 by a shaft support portion 7b formed at the base end of the square member 7a. The opening end 7 of the square member 7a is fixed in the middle of a spring tube 18 as will be described later.
The tip portion of the square member 7c is inserted into d, and the insertion depth is defined by the stopper 7e attached to the outer surface of the square member 7c on the tip side. The shaft support portion 7b has a tubular shape and is supported by a bolt inserted into the suspension frame 3 to regulate the rotational twist of the lifting boom 7 and keep the direction fixed.

As shown in FIG. 4 in addition to FIG. 3, a spring tube 18 is provided at the tip of the elevating boom 7, and the end of the coil spring 8 housed in the spring tube 18 is the spring tube 18.
Are joined to the flange portions 14 of the end members 13 attached to the connecting members 12 of the roll-hanging wire ropes 2 located on both sides of the elevating boom 7 as described above, in which the square tube member is extendably fitted. The angular fitting structure prevents the mutual rotation, and the spring cylinder 18 having the coil spring 8 fixed to the lower end thereof is positioned between the wire ropes 2 and 2 as described above. The middle portion of the wire rope 2 is pushed wide to make the gap larger than the width of the neck portion of the roll 1, and the middle portion of the rope 2 is prevented from being twisted (or twisted).

That is, the intermediate portion or the tip end side of the rope 2 is substantially exactly brought into the state shown in FIG. 3, and therefore, the crane operator performs the crane hoisting and unwinding operations and the electric punch 10 shown in FIG. Figure 1 shows the lifting boom 7.
The rope 2 can be securely slung on both end sides of the roll 1 simply by opening and closing the open state shown by the two-dot virtual line and the closed state shown by the solid line, and the roll 1 can be hung by the crane. By raising, the elevating boom 7 is displaced as shown by the chain line, and the upper portion of the rope 2 is automatically squeezed (the coil spring 8 of the spring tube 18 is compressed by the tensile force acting on the rope 2). The roll 1 is surely suspended and held.

The wire rope 4 attached to the tip of the lifting boom 7 is pulled by the load of the roll 1 when the roll 1 is hoisted as described above, and the torque limiter 9 is set. The limiter 9 slips against the torque and is unwound from the drum 5.
Therefore, the elevating boom 7 and the ropes 2 and 4 are automatically operated in orderly arranged positions, and a single crane operator can perform a reliable slinging work without touching those members.

As described above, the stopper 7e fixed to the rectangular member 7c can be set by appropriately changing the set position by tightening means such as bolts, and the binding position of the wire rope 2 to the spring tube 18 is set. And the upper wire rope suspending pin to adjust the stroke to give the wire rope proper tension, and to adjust the tension when the wire rope is stretched by use.

According to the present invention, when the number of roll types is limited to several types, the opening degree of the lifting boom 7 that is adapted to each roll type is preset to several levels (a limit switch or a proximity switch can be used to simplify the setting). Yes, the crane operator can select the opening according to the roll type, and the crane operator can select the opening to automatically obtain the proper opening setting for the target roll, making lifting safer and easier. ,
It can be hung.

Further, the present invention can be applied to hoisting and hanging of axles and other long objects other than rolling rolls.

[0019]

According to the present invention as described above, a safe and reliable slinging work can be carried out by the operation of one crane operator without the operator touching the roll or the roll-hanging wire rope. In addition, the hoisting position can be freely selected, so it can be appropriately used for several types of rolls with different hoisting intervals. Since the work can be carried out smoothly and the labor required for the work staff can be saved, the invention is industrially effective.

[Brief description of drawings]

FIG. 1 is a front view showing a general operation relationship of a sling hanger according to the present invention.

FIG. 2 is a partial end view of the hanger frame and wire drum portion thereof.

FIG. 3 is an end view as seen from the right side of the drawing in FIG.

FIG. 4 is an enlarged cross-sectional view of the lifting boom and the IV portion in FIG.

5 is an enlarged end view of a V portion in FIG.

FIG. 6 is an end view showing a state in which a roll is placed on a roll stand according to the related art.

FIG. 7 is a side view of a state in which a roll is similarly lifted according to the related art.

FIG. 8 is a front view of the suspender.

FIG. 9 is a front view showing a slinging operation of a roll with respect to the hanging tool of FIG. 8;

[Explanation of symbols]

 1 Roll 2 Rope 3 Lifting Frame 4 Wire Rope 5 Wire Drum 6 Wire Sheave 7 Lifting Boom 7a Square Member 7b Shaft Support 7c Square Member 7d Open End 7e Stopper 8 Coil Spring 9 Torque Limiter 10 Electric Wenchi 11 Geared Motor 13 End Connection Member Member 14 Collar 18 Stroke tube 20 Roll stand 21 Lifting tool 22 Shackle 23 Frame 24 Hook 25 Wire rope

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsufumi Anno 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. 5 Suganami Bussan Co., Ltd.

Claims (1)

[Claims] 1. A wire rope for hanging a roll, and a hoisting frame in which a unit incorporating a telescopic lifting boom is attached to a tip of the wire rope at appropriate intervals.
The hoist frame is provided with a winch capable of raising and lowering a unit and an operation wire for operating the elevating boom, and a tip end of the elevating boom is provided with a spring tube provided between the intermediate portions of the wire ropes. An automatic sling hanger according to claim 1, characterized in that an end member which is constantly pushed by the spring in the spring cylinder is connected to the wire rope, and a torque limiter is provided for the operation wire.