JPH0637158Y2 - Clamp hanger - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) This invention is a suspension scaffolding and other heavy objects used for bridge construction, construction of elevated roads and construction of large steel structures. It relates to a clamp hanger for suspending.

(Prior Art) When performing an elevated road or a large bridge construction, a suspension scaffold for work and temporary equipment for suspending other heavy objects are required.

Conventionally, a jig called a clamp hanger is often used when constructing such temporary equipment. Second
The figure shows the clamp hanger.

As shown in this figure, the conventional clamp hanger has a C-shaped clamp metal fitting body 1 having a lower jaw 1a and a fastening bolt 2
Screw the upper jaw part 1b to the upper end 3a of the hanging metal fitting 3 to support the spindle 4.
And the chain 5 is attached to the lower end of the hanging metal fitting 3 which is pivotally supported.
In general, the structure is such that the hanging load such as a scaffolding plate is appropriately suspended via the chain 5.

That is, the hanging metal fitting 3 for supporting the lifting load is integrally coupled to the upper jaw portion 1b of the clamp metal fitting body 1 similar to the shovel vise with the support shaft 4, and the clamp mechanism and the load mechanism are connected via the support shaft 4. Has an integrated connection structure.

(Problems to be solved by the invention) Then, using this clamp hanger as a hanging jig, for example, as shown in FIG. 2, the fastening bolt 2 of the clamp fitting body 1 is attached to the flange portion 6 of a member constituting a bridge girder or the like. In the case of tightening and clamping, and hanging the scaffolding or the like through the chain 5 at the lower end of the hanging metal fitting 3 for use, the hanging metal fitting 3 and the clamp metal fitting body 1 are integrally coupled with the spindle 4 as described above. Therefore, it is pointed out that there are the following safety issues.

That is, the suspension load F acting on the suspension metal fitting 3 is directly applied to the upper jaw 1b of the clamp metal fitting main body 1 via the support shaft 4, so that the suspension load F should be vibrated or left and right due to vibration or impact. (See Fig. 2)
This means that the component force F'of the above acts on the upper jaw portion 1b of the clamp fitting body 1 via the support shaft 4 and affects the clamping force of the clamp fitting body 1.

For example, when the component force F ′ acts on the right side in FIG. 2, the force acts in the direction of opening the upper jaw portion 1b of the clamp fitting body 1 upward, and in the opposite case, in the direction of closing the upper jaw portion 1b. Act on. It is pointed out that if this action is repeated alternately, as a result, the clamping force on the flange portion 6 of the clamp fitting body 1 is weakened, and finally the clamp hanger itself falls off from the flange portion 6 and the like, leading to an accident.

In any case, if the hanging metal fitting 3 that receives the hanging load and the clamp metal fitting body 1 that holds the hanging metal fitting 3 at a predetermined position are integrally coupled through the support shaft 4, the hanging load Since the clamp metal fitting body 1 is directly loaded, the clamp load of the clamp metal fitting body 1 is affected by the fluctuation of the suspension load, etc., and there was concern about safety.

The present invention has been improved in the following manner with the object of solving such structural problems and providing a safe and reliable clamp hanger in which the suspension load does not affect the clamping force. .

(Means for solving the problem) Therefore, the feature of the improving means taken by the present invention is that the upper jaw part of the clamp metal fitting type clamp metal fitting body is
In a clamp hanger in which the upper end of a hanging metal fitting having a hanging chain is pivotally supported, the hanging metal fitting is formed into a key-shaped hanging metal fitting, and the upper horizontal side thereof is a spindle attached to the upper jaw part of the clamp metal fitting body. In contrast, it is configured so that it can be freely movably supported and the hanging load is received by the lower surface of the upper horizontal side of the key-shaped hanging fitting.

That is, the present invention is characterized in that the clamp mechanism and the suspension mechanism are movably connected to each other via a support shaft so that the suspension load during use is not directly applied to the clamp metal fitting body.

(Operation) As described above, according to the present invention, the hanging metal fitting is rotatably supported by the clamp metal fitting main body through the support shaft, and the hanging load during use is mainly the lower surface of the upper horizontal side of the hanging metal fitting. , It is structured so that it is received by locking it on the clamped flange part and is not loaded on the clamp metal fitting body.Therefore, an irregular load due to lateral deviation of the load is applied to the hanging metal fitting. However, it does not affect the clamping force of the clamp fitting body.

(Embodiment) Further, an improved portion of the present invention will be specifically described based on an embodiment shown in the drawings.

FIG. 1 is a vertical side view of the improved clamp hanger,
Reference numeral 11 is a so-called vise-type clamp metal fitting body composed of a C-shaped frame.

Reference numeral 12 is a fastening bolt screwed to the lower jaw portion 11a of the clamp metal fitting body 11, and the clamp metal fitting body 11 is appropriately clamped to the flange portion 13 by the fastening bolt 12.

The improved part is the upper jaw part 11b of this clamp fitting body 11.
In order to freely pivotally support the key-shaped hanging metal fitting 15 to which the hanging chain 14 is connected, the upper horizontal side 15 of the key-shaped hanging metal fitting 15 is
A pivot hole 15b having a diameter larger than that of the support shaft 16 attached to the upper jaw portion 11b is bored in the shaft a, and the support shaft 16 is supported by the upper horizontal side 15a
It is configured to be connected so as to be free to move around.

When the clamp metal fitting body 11 is used by being clamped to a predetermined flange portion 13, the suspension load is the above-mentioned key suspension metal fitting.
The point is that the lower surface 15c of the upper horizontal side 15a of 15 receives it.

Since the clamp hanger of the present invention has been improved as shown in the above embodiment, as shown in FIG. 1, the hanging load such as a hanging scaffold is exclusively on the lower surface 15c of the upper horizontal side 15a of the hanging bracket 15.
Even if the load of the hanging metal fitting 15 is received by the flange portion 13 and laterally shakes, the load weight due to the fluctuation does not reach the clamp metal fitting body 11.

In the unlikely event that the suspended load violently sways, or the suspended load exceeds the allowable load, the suspended metal fitting 15 is plastically deformed as shown by the phantom line in FIG.
When the pivot hole 15b formed in 15a is deformed to the state of coming into contact with the support shaft 16 attached to the clamp fitting body 11,
For the first time, the suspension load will affect the clamp fitting body 11.

Therefore, if the upper horizontal side 15a of the hanging metal fitting 15 is sufficiently deformed in advance, it functions as a safe and reliable clamp hanger while it is used within a normal allowable load range. That is, even if an unbalanced load is applied to the hanging metal fittings 15 due to lateral displacement of the hanging load, the clamp metal fitting body 11 and the hanging metal fittings 15
Clamp bracket body 11
It does not affect the clamping force of.

(Effects of the Invention) As described above with reference to the embodiments, the clamp hanger according to the present invention does not directly apply a hanging load to the clamp metal fitting body during use. It is possible to use it as a clamp hanger with extremely high safety, without the concern about safety.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a clamp hanger according to the present invention,
FIG. 2 is a side view of a conventional clamp hanger. 11 …… Clamping bracket body, 11a …… Lower jaw, 11b …… Upper jaw, 12 …… Fastening bolt, 13 …… Flange, 14 …… Suspension chain, 15 …… Key-shaped suspension fitting, 15a… … The upper horizontal side of the key-shaped hanging bracket, 15b …… Pivot hole, 15c …… The lower surface of the upper horizontal side, 16 …… Spindle.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A clamp hanger in which the upper end of a hanging metal fitting having a hanging chain is pivotally supported on the upper jaw of a clamp metal fitting type clamp metal fitting body, and the hanging metal fitting is formed into a key-shaped hanging metal fitting. , The upper horizontal side of which is rotatably supported by a support shaft attached to the upper jaw of the clamp body, and the hanging load is received by the lower surface of the upper horizontal side of the key type hanging bracket. Clamp hanger.