JPH0547171Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a wire loop hanging device used for hanging wires of power machines such as cranes, and in particular, it is also equipped with a mechanism to warn of overloading of the wire. This invention relates to a wire loop hanging device with an overload alarm mechanism.

[Prior Art] Conventionally, when a heavy object such as a steel frame is lifted and transported using a powered machine such as a crane, a wire 1 from the crane is hung over the object 2 to be transported.In this case, generally, as shown in FIG. As shown, the wire 1 is passed through a loop 3 formed at its tip and hung on the object to be transported. When removing the object to be transported from the wire 1, it is necessary to remove the wire 1 from the loop 3 formed at its tip.

[Problems that the invention attempts to solve] However, with the above wire hanging method,
As mentioned above, when removing the conveyed object from the wire, it is necessary to remove the wire from the loop at its tip.
The wire had to be removed from the crane each time, which made the work of hanging the wire difficult.
The problem was that the efficiency was very low.

Additionally, if the weight of the transported object is too heavy, an excessive load may be applied to the wire and the wire may break. In this case, the transported object may suddenly come off and fall, often leading to serious accidents. Therefore, there has been a need for a relatively simple device to warn of overloaded wires.

Therefore, in view of the above-mentioned problems in the conventional technology, the present invention has been developed to provide a wire loop hanging device with an overload alarm mechanism, which not only allows wire hanging work to be carried out easily, but also has a mechanism to warn of overload condition on the wire. It is about providing.

[Means for Solving the Problems] The object of the present invention is to provide a frame 10 whose sides are approximately H-shaped, and a first arm portion provided with a hook 111 at the tip of the frame 10 at the top of one side surface of the frame. 1
1 is rotatably attached, a second arm section 13 is attached to the lower part of both sides of the frame, and a latch section 18 for locking a hook at the tip of the first arm section is attached to the other side of the frame. and a wire loop hanging device comprising a cover portion 16 provided to cover the latch portion and a cover lock portion 17 for locking the cover portion; , a mechanism for removing the cover from the cover lock when the load applied to the first arm exceeds a predetermined value and the latch is deformed; This is achieved by a wire loop hanging device with an overload alarm mechanism, which is provided with a wire loop hook 172 and is characterized in that the alarm is issued by opening only the cover portion.

[Function] That is, according to the above wire loop hanging device with an overload alarm mechanism, when looping a wire around an object to be transported, the first arm portion is locked to the latch portion through the wire, and the first arm portion can be removed. , the work can be easily carried out by simply removing the first arm from the latch, and furthermore, when the load applied to the first arm exceeds a predetermined value, the latch will close. Deform (specifically, stretch). Along with this, a vertically long plate-like member that is a part of the cover lock section moves and removes the cover section from being locked to the cover lock section, opening only the cover section, thereby reducing the overload of the rope. A warning will be issued and the operator can easily check the situation.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an exploded view of each component constituting a wire loop hanging device with an overload warning mechanism according to an embodiment of the present invention. First, in the figure, on the left side of the center,
A frame 10 whose side surface is approximately "H" shaped is shown, and this frame 10 is made by forming and welding, for example, a steel plate or the like. This frame 1
A rotary arm 11 is shown above 0, and this is a rod-shaped member with a hook portion 111 at the tip.
and a hole 112 in the center at the other end.
The flange portion 113 in which is formed is fixed by welding or the like. Then, this rotating arm 11
A pair of walls 1 forming the left side of the frame 10
01, 101', shaft pin 1
2 into the holes 102, 102' provided in the walls 101, 101' of the frame 10 and the rotating arm 11.
By passing through the hole 112 formed in the flange portion 113 of the flange 113, the flange portion 113 is mounted so as to be freely rotatable.

A so-called fixed arm 13 is shown below the frame 10, and this fixed arm 13
For example, an iron plate is formed into a substantially dogleg shape, and holes 131 and 132 are provided at both ends of the iron plate. This fixed arm 13 is connected to a hole 103 in the left side wall 101, 101' of the frame 10.
103' and the holes 105, 105' in the lower walls 104, 104' on the right side, and then pass the shaft pins 14, 15 through the holes 13 at both ends of the fixed arm 13.
1,132 to be fixedly attached.

Further, the upper right side of the frame 10 is formed of a wall 106 having a substantially U-shaped cross section, and a guiding notch 107 is formed in the center of the front surface of the wall 106, so that the rotating arm 11 can be This notch 1
It is expected to be introduced in line with 2007. Also,
In the figure, numerals 108 and 108' are holes for shaft pin insertion provided on both sides of this "U"-shaped wall 106 (however, in the figure, one hole 108' is
only 8 is shown). Furthermore, in the figure, reference numeral 10
Reference numerals 9 and 109' indicate spring fixing pins for fixing the spring.

Next, in FIG. 2, a so-called cover section 16 is shown on the right side. This cover part 16
It is also made by cutting and forming an iron plate, etc., and its cross section is roughly "U" shaped. and,
There is a hole 16 in the lower wall for inserting the shaft pin.
1,161' are formed, and when the shaft pin 15 is inserted, the holes 161, 1 are simultaneously inserted.
61' also passes through the shaft pin 15, and is rotatably attached around the shaft pin 15.
Also, at this time, between the spring fixing pins 109, 109' of the frame 10 and the small holes 162, 162' formed in the lower wall of the cover part 16,
A pair of springs 170, 170' are hung, and
The cover portion 16 is pulled to the right in the figure (that is, in the opening direction). Further, reference numerals 163 and 163' in the figure refer to cover lock portion 1, which will be described later.
7 (however, only one 163' is shown in the figure).

First, a cover lock portion 17 is provided between the frame 10 and the cover portion 16. As shown in the figure, this cover lock part 17 is made up of two parallel plate members 171, 1.
71', and a vertically long plate-like member 172 and a small plate-like member 173 fixed to the left and right sides thereof.
Further, so-called jaws 174, 174' are provided at the left end portions of the plate-like members 171, 171', shaft pin through holes 175, 175' are provided in the center thereof, and small holes 176, 175' for attaching a spring are provided. 17
6' is provided. A vertically long window portion 177 is formed on the upper side of the vertically long plate member 172.

In the figure, a so-called latch portion 18 for locking a hook 111 at the tip of the arm 11 is also shown above the cover lock portion 17.
As is clear from the figure, this latch portion 18 is a tube member 18 for passing a shaft pin through a vertically long iron plate.
1, which is bent into a predetermined shape and fixed around the arm.The left side member is bent into a substantially dogleg shape, and the upper part has a lock for locking the hook 111 at the tip of the arm. A window 182 is formed. Further, the member on the right side is similarly bent into a substantially dogleg shape, and pins 183, 183' for attaching springs are fixed to the upper end thereof. Then, the above-mentioned cover lock part 1
7, and the pair of springs 19, 19' are attached to the spring mounting pins 183, 1.
83' and the small spring mounting holes 176, 176', insert it inside the right side of the frame 10, pass through the shaft pin 20, and fix it rotatably to complete the assembly. .

Next, a method of using the wire loop hanging device with an overload warning mechanism will be explained with reference to FIGS. 2 and 3, a, b, and c. First, as shown in FIG. 2, the loop 3 at the tip of the conveying wire 1 is firmly attached to the fixed arm 13 of the wire loop hanging device. After that, when lifting a steel frame 100 such as H-type steel, C-type steel, or pipe steel, the wire 1 is wrapped around the steel frame 100, the rotating arm 11 is tilted down as shown by the arrow in the figure, and the cover is 16 in the closing direction (indicated by the arrow in the figure) and fix it with the cover lock part 17 to complete the wire hooking. After that, when removing the wire 1, the cover part 16 is opened by opening it in the opposite direction to the arrow, and then the rotating arm 11 is lifted upward to remove the wire 1. Wires can be removed.

Furthermore, FIG. 3a shows an example in which the wire 1 is passed through the fixed arm 13, the wire 1 is hung around the steel frame 100, and the loop 3 at the tip of the wire 1 is fixed to the rotating arm 11. ing. In this case, fixing and releasing of the rotary arm 11 is performed in the same manner as described above. Next, Figure 3 b and c
shows other methods of using the above-mentioned wire loop hanging device with an overload alarm mechanism, in which the wire loop hanging device with an overload alarm mechanism is hung using a lifting wire 4 extending upward from the object to be transported, and when the wire loop hanging device with a tension ring 5 is used. This method is for pulling in the lateral direction. However, it is clear that the method of using this wire loop hanging device with an overload warning mechanism is not limited to the above method, and that various other methods are also possible.

4 to 6 show cross sections of the cover portion 16, cover lock portion 17, and latch portion 18 of the wire loop hanging device with overload warning mechanism. First, FIG. 4 shows a state in which the cover part 16 is closed and the latch part 18 is locked to the hook part 111 of the rotary arm 11. At this time, as is clear from the figure, the latch portion 18 and the cover lock portion 17 are connected to the spring 1 which constitutes a so-called toggle mechanism.
9 and 19', it receives the force of falling to the left and remains stable.

FIG. 5 shows a state in which the cover portion 16 is opened and the rotary arm 11 is removed from the latch portion 18. As is clear from the figure,
The latch part 18 and the cover lock part 17 fall to the right side by the action of the springs 19 and 19' that constitute the toggle mechanism, and the hook part 111 of the rotary arm 11 comes off from the locking window 182 of the latch part 18.
It can be removed in the direction shown by the arrow.

Next, FIG. 6 shows the mechanism operation for issuing a so-called overload alarm when an excessive load is applied to the rotary arm 11. In the figure, when an excessive load is applied to the rotary arm 11, the latch portion 18 begins to be stretched upward from its original shape shown by the dotted line, and the rotary arm 11 moves in the direction of the arrow.
When this amount of movement exceeds a predetermined amount, the rotary arm 11 comes into contact with the upper end of the window 177 formed on the upper side of the vertically long plate-like member 172 attached to the side surface of the cover lock part 17. Pull up the left end of the cover lock part 17. Along with this, since the cover lock portion 17 rotates around the pin shaft 20, the jaw portion 17 of the cover lock portion 17 rotates around the pin shaft 20.
4,174' is removed from the cover 16, and the cover 16 opens to the right as shown by the arrow.
This will alert you to a so-called overload condition.

[Effects of the invention] As is clear from the above explanation, the wire loop hanging device with an overload alarm mechanism according to the present invention has the following effects:
Wire hanging work can be done easily, greatly improving the efficiency of wire hanging work, and work safety is ensured by having a mechanism that warns of overloading the wire. It has extremely excellent practical effects.

[Brief explanation of the drawing]

Fig. 1 is an exploded view of a wire loop hanging device with an overload warning mechanism which is an embodiment of the present invention, and Figs. 2 and 3 are a, b, and c showing how to use the above wire loop hanging device. 4 to 6 are sectional views of essential parts for explaining the mechanical operation of the wire loop hanging device with an overload warning mechanism, and FIG. 7 is a view showing a conventional example. 10... Frame, 11... Rotating arm, 13
... Fixed arm, 16 ... Cover part, 17 ... Cover lock part, 18 ... Latch part.

Claims (1)

[Scope of utility model registration request] A frame 10 having a substantially H-shaped side surface, and a first arm portion 11 having a hook 111 at its tip rotatably attached to the upper part of one side surface of the frame,
At the bottom of both sides of the frame are second arm parts 1.
3, and the other side of the frame includes a latch portion 18 for locking the hook at the tip of the first arm portion, a cover portion 16 provided to cover the latch portion, and the cover portion. In the wire loop hanging device, which is provided with a cover lock portion 17 for locking the wire loop, the other side of the frame further includes a locking device that when the load applied to the first arm portion exceeds a predetermined value, providing a mechanism 172 for removing the cover from the cover lock as the latch is deformed;
A wire loop hanging device with an overload alarm mechanism, characterized in that an alarm is issued by opening only the cover portion.