JPS5936090A - Suspension method through remote control - 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 The present invention relates to a method for lifting an object by a lifting device, in which a wire rope attached to an object to be lifted is hooked onto a hook of the lifting device by remote control, and the object is lifted and transported.

Generally, when lifting a heavy object such as a steel material, a wire rope is attached to the object, and a hook of a lifting device is hooked onto the wire rope to lift it. For example, when lifting long steel materials such as pipes, the steel materials 1 are bundled and a wire rope 2 is slung in advance at a suitable hanging point as shown in FIG. 1 (al(t)). A beam 4 is moved downward by the crane lobe 3 via a pulley 3a and is driven to be telescopic, and hooks 5 attached to the lower part of both ends of the beam 40 are driven to be rotatable or openable and closable. ，
5 and a lifting device 6, the length of the beam 4 is adjusted so that the distance between the wire ropes 2 and 20 on which the steel material 1 is slung matches the distance between the hooks 5 and 50, and the hooks 5 and 5 are adjusted by remote control. 5 is hung on a wire rope 2°2 and lifted.

By the way, there is a hook 5 between the wire rope 2 and the steel l.
If there is a gap to insert the hook 2, it is easy to hook the tip of the hook 2 onto the wire rope 2 by remote control, but if the steel material 1 has many flat surfaces like a shaped steel, the steel material l
Since there is no suitable gap between the hook 5 and the wire rope 2, it is difficult to hook the hook 5 onto the wire rope 2 by remote control.

As a result, work efficiency is reduced, and in some cases, the wire rope 2 has to be hooked onto the hook 5 manually.

In view of the above circumstances, it is an object of the present invention to provide a method by which a wire rope attached to an object to be lifted can be easily hooked to a hook by remote control, and a magnet is provided near the hook. In this method, the wire rope is lifted by the magnetic force of a magnet, brought into the range where the hook acts, and then hooked onto the hook.

The method of the present invention will be explained below with reference to the drawings.

FIGS. 2 to 4 show an example of a lifting device for carrying out the method of the present invention. In the figures, reference numeral 11 indicates a lifting device for hoisting a long object to be lifted (for example, a steel material, etc.). The lifting device 11 consists of a beam 12 that is driven telescopically or that can freely move the suspension point, a pulley 14 that winds a wire rope 13 that moves up and down the beam 12, and a pulley 14 that is attached to both ends of the beam 110. hook part 16 having a hook 15 at the lower end
It is composed of. The hook 15 is opened and closed by an actuator (for example, a hydraulic cylinder) 17 within the hook portion 16. Note that the reference numeral 16a in the figure is a link mechanism that cushions the upward impact of the hook portion 16.

A magnet 18 is provided on the inside upper part of the opening/closing hook 15, with the attracting surface facing downward. The magnet 18 is attached to the lower end of the hook portion 16 so as to be movable upward through a connecting member 20 having an elongated hole 19, so as to absorb the upward impact of the magnet 18.

Since the magnet is attached to the hook 15 as described above, when the hook 15 is opened and lowered onto the wire rope 22 slung over the steel material 21 as shown in FIG. 5(a), The wire rope 2'2 is attracted to the magnet by the attractive force of the magnet 18. When the hook part 16 is raised in this state, the wire rope 22 is lifted as shown in FIG.
is within the action range of the hook 150. Therefore, the fifth
When the hook 15 is closed as shown in FIG.
is separated from the magnet and is subsequently lifted by the hook 15. As described above, according to the method of the present invention, the wire rope 22 can be easily hooked onto the hook 15 even when the wire rope 22 and the steel material 21 are in close contact with each other and it is difficult to hook the wire rope 22 onto the hook 15 by remote control. I can do it.

It should be noted that any permanent magnet or electromagnet can be used as the magnet as long as it has strong magnetism on its lower surface. Alternatively, a combination of a plurality of the above magnets may be used. Furthermore, although the above method has been described for lifting long steel materials, it is a method that can be applied to anything that is lifted using a wire rope.

Also, Fig. 6(a)(t)l(C) to Fig. 9(a)(
13) (C) shows an example of another apparatus for carrying out the method of the present invention.

(Fig. 6(a)())) (C1 shows that the magnet 18 is connected to the hook part 16.
The magnet 18 is lowered and slinged onto the steel material 21 as shown in Fig. 6 (8). As shown in FIG. By closing the hook 15, the wire rope 22 enters the closed ring of the hook.

7(a) and 7(b), the magnets 18 are installed so that they are located on both sides of the hook 15, and the opposing magnets are
The wire rope 22 attracted to the hooks 15 passes through the action range of the hook 15, and the seven hooks 15 securely catch the wire rope 22. In this case, magnet 18
．． 18 may be either fixed or movable up and down.

Figure 8 shows a magnet attached to a rotating hook.
are arranged on both sides of the hook 15.

Also, Fig. 9(a)(1)l(C) shows the fixed hook 1
On both sides of the magnet 5, there are magnets 18 and 18 that move vertically using a pinion mechanism or the like and horizontally move using a screw feed mechanism or the like.

Figure 9 (al) lowers the magnets 18.18 on both sides to attract the wire rope 22 slung onto the steel material 21, and lowers the magnets 18.18 to hold the wire rope 22 as shown in Figure 9 (bl). Then, it moves horizontally in the direction of the hook 15 and brings the wire rope 22 above the hook as shown in FIG. 9(C).

Next, when the hook 15 is raised, the wire rope 22 leaves the magnet 18 and is hooked on the hook 15. In addition, 23 in the figure is
Wire rope 22 from the hook 15. This is a bar that prevents it from coming off.

As described above, the lifting method according to the present invention uses a magnet to bring the wire rope into the area where the hook acts.
Even when it is difficult to hook the wire rope to a hook by remote control because the object to be hoisted and the attached wire rope are in close contact with each other without a gap, the wire rope can be hooked easily and quickly.

[Brief explanation of the drawing]

Figure 1 (al and b) shows a conventional lifting device for lifting long steel materials. 2 to 5 show an example of an apparatus for carrying out the method of the present invention. FIG. 2 is a front view showing one side of the apparatus, FIG. 3 is a front view of the hook part, and FIG. Figure 4 is a view taken from the IV-IV arrow in Figure 3, Figure 5 (a) is a diagram of the wire rope being attracted by a magnet, Figure 5 (bl is a diagram showing how the hook is raised and the hook is activated, and Wire rope brought into the range,
Figure 5 (C) is a diagram showing the wire rope inserted into the closed ring of the hook, Figure 6 (al (bl (C)) to Figure 9 (al (b)
1(C) shows another example of the apparatus for implementing the method of the present invention, and FIG. 6(a)(+)1(C) shows the case where the magnet moves vertically with respect to the hook. A diagram explaining the operation,
Figure 7 (al (bl) shows the case where magnets are placed on both sides of the hook, Figure 8 shows the case where this method is applied to a rotating hook, Figure 9 (a) (bl (C) is a diagram showing the movement of the magnet when this method is applied to a fixed hook. 15...7 hooks, 16...hook part, 18... magnet, 21... steel material (covered). (hanging object), 22...Wire rope. Flute 1 diagram (al) Flute 2 diagram Hemp 3 diagram 4 Brush diagram 5 and Otsu diagram 6 diagram 7 diagram 8 I○ diagram 9 (a

Claims (1)

[Claims] In a remote-controlled lifting method in which a hook is hooked to a wire rope attached to an object to be lifted, the wire rope is attracted and lifted by a magnet installed near the hook, and the wire rope is lifted within the range where the hook acts. A lifting method by remote control characterized by the above-mentioned wire rope.