JPH08324952A - Hanger device for columnar cargo - Google Patents

Abstract

PURPOSE: To provide a hander device for a columnar cargo which can be suspended easily by small labor. CONSTITUTION: In a device of hanging a columnar cargo by forming a strip unit 2, suspended by a crane or the like, into a loop in a lower end of this strip unit 2 and by winding this loop 22 around the columnar cargo, the device comprises a telescopic pipe 3 receiving an upper part from the loop 22 of the strip unit 2 to be suspended with this strip unit 2 and a loop support mechanism 4 mounted in a lower end of this telecsopic pipe 3 to maintain the loop 22 horizontally further opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for hanging a strip of a chain or the like around a columnar cargo and suspending it, and more particularly to a device for suspending a columnar cargo that can be easily lifted by a small number of people.

[0002]

2. Description of the Related Art An operation for raising and lowering a columnar cargo having a columnar shape such as a columnar shape, for example, taking in and out an electrode rod in a firing furnace is performed as follows.

As shown in FIG. 3, a large number of cylindrical electrode rods 62 are provided in a pit 61 formed under the floor surface G of the firing furnace.
Is raised and housed. For example, the electrode rods 62 having a length of 3 m are stacked in two stages. The pit 61 has a depth of about 6 m. A cargo handling device 63 such as a crane is located above, and a chain 65 is suspended from a hook 64 of the crane. The chain 65 is formed into a loop at its lower end, and the loop 66 is wound around the electrode rod 62 to hang it. On the floor surface G, there are two workers for slinging work and one worker for operating the crane.

In the ball hanging work, first, FIG.
The chain 65 is placed on the upper end surface of the electrode rod 62 by a crane as shown in FIG. Next, as shown in FIG. 4B, the worker uses a long-handled key 67 to spread the loop 66 of the chain and hang it around the electrode rod 62. At this time, it is necessary for two workers to work from both sides of the electrode rod 62. Further, as shown in FIG. 4C, two workers hold the loop 66 with the long-handled key 67, and at the same time, another worker operates the crane to gradually pull up the chain 66. As a result, the loop 66 of the chain is tightened and the electrode rod 62 is suspended.

[0005]

As described above, the ball slinging work requires a minimum of three workers, and in particular, the loop 66
In the process of tightening, it is necessary to carefully hold the loop 66 with the long handle finger 67 and carefully pull up with the crane until the electrode rod 62 can be reliably hung, and these three workers should pay attention to each other. While doing so, they will work together.

[0006] In addition, the ball hanging work is performed from the floor surface G to the pit 6
Since the work is performed on the electrode rod 61 in the No. 1, it is a work at a high place, and although the safety fence 68 is provided at the edge of the pit 61, the work is dangerous. Furthermore, since the long-handled key 67 is heavy, it is not easy to handle, and the operation of hanging or pressing the chain at its tip is a heavy labor. In addition, since the working environment in the firing furnace is a high temperature of 250 ° in the pit 61, the work environment is extremely fatigued.

As described above, the conventional slinging work has a problem that a large number of workers are required and that the work environment is dangerous and heavy and the working environment is poor.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a columnar cargo hoisting device that can be hoisted easily with a small number of workers.

[0009]

In order to achieve the above object, the present invention forms a strip suspended by a crane or the like into a loop at its lower end, and wraps the loop around the column to carry the column cargo. In a hanging device, a telescopic tube that accommodates an upper portion of the strip above the loop and is hung together with the strip, and a loop support mechanism that is attached to the lower end of the telescopic tube and maintains the loop horizontally and open It is equipped with and.

The loop support mechanism comprises a magnet fixed to the lower end of the expansion tube, an attraction plate attracted to the magnet, and an arcuate member horizontally projected from the attraction plate. The loop may be attached to and supported by the arc-shaped member.

[0011]

With the above construction, when the expansion tube is expanded and contracted, the size of the loop extending from the lower end of the expansion tube changes, so that the size of the loop can be determined according to the size of the columnar cargo. As the loop is kept horizontal and open, as the lifting device is lowered, a column of cargo enters this loop. Then, when the lifting device is raised so that the loop touches the columnar cargo, the loop hangs on the columnar cargo and the ball hanging is achieved.

When hanging a ball, while the suspension device is being lowered, the attraction plate is attracted to the magnet and the arcuate member carries the loop, so that the loop is maintained horizontally and opened. When the lifting device is lifted in the suspended state, the tightening of the loop is achieved, and the attraction plate is separated from the magnet by the load of the columnar cargo, so that the suspension state is set freely.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the suspension device 1 of the present invention.
Is mainly composed of a strip body 2, a telescopic tube 3, and a loop support mechanism 4. The telescopic tube 3 is composed of a main pipe 32 having a suspension ring 31 at an upper end for hanging the hook 5 of a crane or the like, and a slide pipe 33 that is exteriorly mounted on the main pipe 32. The slide pipe 33 includes a slide pipe support spring 3 spirally provided on the outer circumference of the main pipe 32.
It is supported by 4, and can move up and down to expand and contract the tube length of the expandable tube 3. The length of the pipe can be fixed by inserting the positioning notch 35 into the main pipe 32 from the outside of the slide pipe 33. Notch holes (not shown) are provided at a plurality of locations. A guide pin 36 is provided upright on one side of the main pipe 32, and a slit 37 is provided in the slide pipe 33 in the longitudinal direction. The guide pin 36 is fitted into the slit 37, and the main pipe 32 and the slide pipe 33 and 33 do not rotate relative to each other about the axis. 38 is a stopper member for the slide pipe supporting spring 34.

The chain 2a, which is the strip 2, is passed through the expandable tube 3, and one end of the chain 2a is hooked on a chain fixing pin 39 which horizontally penetrates the upper end of the main pipe 32. In the illustrated example, the suspension ring 31 is also hooked on the chain fixing pin 39. At the opposite end of the chain 2a protruding from the lower end of the expandable tube 3, a terminal ring 21 is provided through which the chain 2a is passed. Chain 2
The loop 22 is formed by the fact that a passes through the terminal ring 21.

The loop support mechanism 4 includes a magnet 41 provided on one side of the lower end of the expansion tube 3 and the magnet 41.
It is composed of a suction plate 42 that is sucked onto the suction plate 42 and an arcuate member 43 that projects substantially horizontally from the suction plate 42. The magnet 41 is a permanent magnet, and is fixed to a magnet support base 44 attached to the outside of the slide pipe 33. The magnetic pole surface of the magnet 41 is located substantially at the lower end of the slide pipe 33. Suction plate 42
Are attracted to the magnetic pole surface of the magnet 41 and are horizontal. Posture maintaining spring 43 forming the arcuate member 43
“A” is projected horizontally from the suction plate 42 and has an arc shape when viewed from above. This posture maintenance spring 4
A loop 22 of the chain 2a is attached to 3a, and both are fixed to each other at a plurality of points. In this embodiment,
Since the posture maintaining spring 43a has a substantially 3/4 circular arc, the loop 22 of the chain 2a also maintains the shape of a 3/4 circular arc, and the remaining 1/4 circular arc is the adjustment allowance 23. The attraction plate 42 and the posture maintaining spring 43a are integrated.

Next, the operation of the embodiment will be described.

The suspension ring 31 of the suspension device 1 is attached to the hook 5 of the crane.
Hang on. The chain 2a is only hooked by the chain fixing pin 39 and hung, and does not exert a force on the telescopic tube 3. Here, the vertical position of the slide pipe 33 is manually adjusted, and the pipe length is fixed by inserting the positioning notch 35. This adjustment is performed in consideration of the size of the columnar cargo so that the loop 22 has a size that makes it easy to hang a ball. In this way, the chain 2a protruding below the telescopic tube 3 having a fixed pipe length forms a loop 22, and the loop 22 is maintained horizontally by the attraction plate 42 being attracted by the magnet 41 in the loop support mechanism 4. , And a substantially circular opening is maintained.

Next, as shown in FIG. 2 (a), the hanging device 1 is lowered by a crane and the columnar cargo P is put into the opening of the loop 22. After that, when the crane 22 raises the suspension device 1 so that the loop 22 touches the columnar cargo P, the loop 22 hangs on the columnar cargo and a ball hanging is achieved.

Next, as shown in FIG. 2B, when the lifting device 1 is raised while the loop 22 is suspended on the columnar cargo P, the tightening of the loop 22 is achieved and the columnar cargo P is secured. The attraction plate 42 is separated from the magnet 41 by the load, and is in a freely suspended state.

In the prior art, the strip was only formed into a loop at its lower end. For this reason, when the strip is hung, the loop hangs and closes, and when the strip is placed on an object, the loop collapses, so a worker was required for hanging the strip. According to the present invention, since the loop can be maintained horizontally and opened, it is possible to hang a ball only by operating the crane.

[0022]

The present invention exhibits the following excellent effects.

(1) The hoisting can be easily performed with a small number of workers, which leads to the reduction of the labor force, the improvement of the working environment, and the improvement of the working efficiency.

(2) Since the conventionally used crane and chain can be reused, there is little waste.

[Brief description of drawings]

FIG. 1 is a front sectional view and a side view of a suspension device showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of ball hanging and hoisting using the hoisting device of the present invention.

FIG. 3 is an explanatory view of raising and lowering work in a conventional firing furnace.

FIG. 4 is an explanatory view of a conventional ball hanging work.

[Explanation of symbols]

 2 Article 2a Chain 3 Expansion tube 4 Loop support mechanism 22 Loop P Columnar cargo

Claims (2)

[Claims] 1. An apparatus for forming a strip body suspended by a crane or the like into a loop at its lower end, and winding the loop around a columnar cargo to suspend the columnar cargo, wherein a portion of the strip body above the loop is accommodated. A columnar cargo suspension device comprising: a telescopic tube hung together with the strip, and a loop support mechanism attached to the lower end of the telescopic tube to maintain the loop horizontally and open. 2. The loop support mechanism comprises a magnet fixed to the lower end of the expansion tube, an attraction plate attracted by the magnet, and an arcuate member horizontally projected from the attraction plate, 2. The columnar cargo suspension device according to claim 1, wherein the loop is attached to and supported by the arc-shaped member.