JPS58144086A - Hanger for heavy material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a lifting device used when lifting or transporting heavy objects from an overhead crane or the like, and in particular, it relates to a lifting tool that is used to lift and transport heavy objects from an overhead crane or the like, and in particular, to lift large-diameter heavy objects safely and easily. This article relates to a heavy object hoist that can be used for lifting heavy objects.

[Technical background of the invention]

Conventionally, as a method for hoisting large-diameter heavy objects horizontally using an overhead crane, etc., the heavy objects to be lifted (1) (
There are methods for directly slinging heavy objects (hereinafter referred to as heavy objects) with wire ropes (2) and hoisting them with crane hooks (3), or attaching heavy objects (1) to the ends of wire ropes (2) as shown in Figure 2. You can clamp it with a clamp device (4) and lift it with a crane hook (3), or as shown in Figure 3,
A commonly used method is to use a clamp device (4) provided on a suspension beam (5) via a wire rope (2) to lift the device (1-) with a clamp [7] and a crane hook (3).

[Problems with background technology]

In the method shown in FIG. 1, a wire rope having a diameter corresponding to the weight of the heavy object is used for slinging, and therefore, handling the rope requires many workers and labor, resulting in extremely poor workability and efficiency.

The method shown in Figure 2 is used when it is not possible to directly sling a heavy object, in which case the crane is suspended and several large and heavy clamping devices are pulled close to the outside station of the heavy object. Clamping requires a lot of effort and workability is poor, and No. 35i! Since a hanging beam is used, the slinging work is carried out in accordance with the above-mentioned Sections 1@ and 1II.
However, both methods have many drawbacks, such as the need for a large suspension beam that can withstand the force, which is expensive to manufacture. Improvements in this type of work are desired.

[Purpose of the invention]

The present invention takes advantage of the above circumstances and provides a heavy object hoisting tool which allows doffing work to be carried out safely and easily by locating the clamp device t11K near the outer periphery of the heavy object without using a hoisting beam tube. The purpose is to

[Summary of the invention]

In order to achieve this object, the present invention includes a cylindrical weight having a flange on the upper part 11, an annular bracket attached concentrically to the weight and having nine ears radially disposed on the outer part, and the bracket. a telescopic arm attached to the ear of the user via a bottle, a nine hanging plate attached to the end of this arm via a bottle, and a clamp device attached to one end of the hanging plate via a wire rope system. and the sling attached to the other end is a wire rope. A feature of this device is that the inclination angle of the arm changes automatically.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 4, (A) is a heavy object hoist according to the present invention, which is composed of an arm, a wire rope, and a clamp device.

(6) is a cylindrical weight with 7 flange at the upper end, and a bracket (7) in which a plurality of ears with holes are provided radially is installed on the outer periphery of this weight (6). (8) and bottle (9). OQ is a stopper and is firmly fixed to the clamp portion of the weight (6) with screw I1.

I consists of a plurality of extensible arms and a pipe a field and number 2410, one end of the pipe a clevis a9 is attached by welding or the like, and a plurality of holes are cut in the axial direction KWIk at the pitch of the other end. ing. At one end of the front pipe Q◆, the clevis a is firmly attached (when melting I11), and at the other end, multiple holes are provided at the same pitch as the holes made in the pipe UK, and on the inner surface of the pipe a. It is inserted and fixed with a bottle cod.

A plurality of bracelets are swingably attached to the ears of the bracket (7) via tale screws, and are restrained upward by stoppers a.

■ is a hanging plate swingably attached to the crebinu a field of the arm a field with a bottle (2), and this OMl [shackle c! A clamping device a◆ is attached to the wire rope 9 and a wire rope a'at, and a sling wire rope (2) is attached to the other end of the wire via a shackle (2).

Next, the effect will be explained.

4111th and 5th IIKTh, the bracelets are made in advance from pipe I to pipe α according to the dimensions of heavy objects (1) 0 and 11.
The position of the round hole provided in the hole is changed appropriately and the bottle aη is inserted and adjusted.

Next, hang the hanging tool (4) from the crane hook (3) K.
As shown in Figure 4, the upward movement of the KMala heavy sling (six weights) is restrained by a stopper a, and the sling wire rope (2) is held at an angle θ when the clamping device (4)
It is possible to easily move the 9th point located near the outer periphery of the heavy object (1).

After clamping the heavy object (1) with the K clamp device (4),
Crane hook (3) t! When the sling wire rope (2) is raised, the extension angle of the sling wire rope (2) gradually becomes smaller, but when the sling wire rope (2) is raised, a component of the tension acting on the sling wire rope (2) K acts simultaneously in the axial direction of multiple bracelets. do.

The weight (6) located at the center of the bracelet is radially provided through the K-bin, and the component force acting in the axial direction automatically raises the weight and increases the ζO arm IO inclination.

When the projecting angle of the slinging wire rope (2) reaches the projecting angle -' at the time of final lifting as shown in FIG. 5, the upward movement of the weight (6) stops.

At this time, the axial force acting on arm 02 is only a component of the weight (6) of the weight (6), which is used to lift a heavy object using the sling wire rope (
The component force of the tension in 2) does not act at all.

Next, after transporting heavy objects (1), place them on the ground with crane hooks (3)
) is lowered, the tension of the sling wire lobe (2) is lost, the weight (6) is lowered, and the angle of inclination of the bracelet gradually becomes gentler], resulting in the state shown in Fig. 4, and the two-lamp device (4) is lowered.
) can be easily unclamped.

To adjust the length of the arm in the hanging device according to the present invention, a method is to insert a bottle at an equal pitch by changing the position of the round hole as appropriate, but as shown in No. 611, a spring (
It is also possible to do part-time work (finance) and create a nine-structure structure.

As shown in Figure 7, the hydraulic pressure is a pneumatic cylinder (towards).
It may also have a structure in which it is used as part of the arm.

〔Effect of the invention〕

As explained above, according to the heavy object hoist according to the present invention, by adjusting the extension and contraction of the plurality of arms, the clamping device can always be positioned near the outer periphery of the heavy object, making clamping work easier and easier. Furthermore, since the inclination angle of the arm automatically changes according to the angle of the slinging wire rope during lifting, the arm does not directly receive the component of the tension of the slinging wire rope, and the structure is extremely simple. This has the effect of providing a lightweight hanging tool.

[Brief explanation of drawings]

Figure 1 is a front view showing a conventional method of directly slinging a sling wire rope for lifting heavy objects, Figure 2 is a front view showing a conventional method of using a clamping device for lifting heavy objects, and Figure 3 is a front view of a conventional method for lifting heavy objects. Fig. 4 and Fig. 1 are front views showing an embodiment of the present invention, and Fig. 68i! ! 7 is a front view showing another embodiment of the present invention, and FIG. 7 is a front view showing another different embodiment of the present invention. (1)...11 items (2)...Wire rope (4)...Clamp device (6)...Weight (7)
...Bracket Work...Armpiece...Bin
a-...Hanging plate-...Bin (2)
...Wire rope (7317) Representative Patent Attorney Kensuke Norichika (and 1 other person) Figure 1 Figure 2 / / Figure 3N Figure 4

Claims (1)

[Claims] A cylindrical weight with 7 lunges at the top, and a concentric weight with ? IC111+tff'j is a square bracket having ears provided radially on the outer periphery, nine extendable arms attached to the ears of this bracket via a bottle, and attached to the ends of the arms via a bottle. It consists of nine hanging plates, a clamping device attached to one end of the hanging plate via a wire rope, and a slinging wire rope attached to the other end, and the clamping device is always near the outer periphery of the heavy object to be lifted. 1. A heavy object hoist, wherein the inclination angle of the arm automatically changes according to the hang angle of the sling wire rope during hoisting.