JPH045637B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a lifting fitting that is inserted into a lifting hole provided in a concrete plate and used for lifting, transporting, and fixing a concrete plate. The present invention relates to a highly versatile hanging fitting that can safely lift plates ranging from thin to thick with the same hanging fitting.

[Prior art] Conventionally, concrete plates used in civil engineering work have varied in thickness from several centimeters to several tens of centimeters.
In particular, for thick concrete plates, it is very dangerous to wrap wires around them when lifting, transporting, and installing the concrete plates, as the concrete plates may fall off and the wires may be damaged. The subsequent work to pull out the wire is also difficult and it is not possible to improve work efficiency, so currently the lifting hole is reinforced with reinforcing metal fittings that are buried in the concrete board in advance and is placed against the surface of the concrete board. The construction method has been changed to one in which the pipe is installed vertically and a lifting fitting is inserted into the hole to lift it.

However, this hanging bracket for lifting concrete plates is also difficult to use when the thickness of the concrete plate ranges from several centimeters to several centimeters.
Because it is as wide as 10 cm, unless a hanging fitting that matches the thickness of each board is used, the locking rod part inserted into the hole for lifting the concrete plate of the hanging fitting will not be long enough.

Furthermore, if the thick plate is an extremely thin concrete plate, it is impossible to form a pair of opposing lifting holes on both sides of the concrete plate. Because,
This is because the presser rods inserted into the hole may collide with each other inside the hole.

Also, for concrete plates that are too thick,
The supporting rods themselves may rotate under the influence of the couple acting on the locking rods, making lifting and transporting concrete plates extremely dangerous.

In addition, if it becomes necessary to prepare various types of lifting hardware, not only is there a problem of increased costs, but also the lifting work is performed with incomplete judgment due to ambiguity in the standards for replacing the lifting fittings. This poses a risk of causing serious accidents when handling concrete products, which are becoming larger in size in recent years.

[Object of the Invention] Thus, the present invention has been devised in view of the above-mentioned conventional drawbacks and problems, and its object is to provide a support rod that extends almost vertically along the surface of a concrete plate, The upper part of the support rod is bent toward the concrete plate, a plurality of locking parts are provided at the upper part of the support rod above the concrete plate, and a locking rod extending toward the concrete plate is provided at the lower part of the support rod. An object of the present invention is to provide a concrete plate hanging fitting that is characterized by:

[Structure of the Invention] The concrete plate hanging fitting according to the present invention is arranged almost vertically along the surface of the concrete plate 14, the upper part is bent in the direction of the concrete plate 14, and the upper part has a plurality of locking parts. a thick-walled locking fitting 34 formed at the lower end of the support rod 12 and having a horizontal hole 30 penetrating therethrough in the horizontal direction; A locking rod 32 is attached to the horizontal hole 30 of the locking fitting 34 so that its protrusion length can be freely adjusted.
and a substantially L-shaped presser rod 22 that includes a presser rod main body 24 and a presser portion 28 and prevents the concrete plate 14 from separating from the locking rod 32.

The presser rod main body 24 is attached to the support rod 12 so as to be slidable in the vertical direction and protrudes from the support rod 12 in the horizontal direction. The presser rod body 24 is attached so that its position can be adjusted in the length direction according to the thickness.

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

In the front view of the hanging fixture 10 shown in FIG. 1, reference numeral 12 is a support rod that extends vertically along the vertical surface of the concrete plate 14, and the upper part of the support rod 12 has an angle of 45° toward the upper left. The concrete plate 14 is bent to form a bent portion 16 extending above the concrete plate 14.

Support rod 12 and bent portion 16 on top of support rod 12
The cross section of is T-shaped as shown in Figure 2,
The shape has sufficient mechanical strength.

The lower surface of the bent portion 16 at the upper part of the support rod 12 is provided with three shackle receiving holes 18 as locking portions in the horizontal direction parallel to the upper surface of the concrete plate 14, which is the front-rear direction on the paper surface of FIG. 1 of the drawings. Provide one. This shaft receiving hole 18 is located on the lower surface of the bent portion 16.
The holes are drilled at positions approximately equally spaced from the upper end of the support rod 12 in the horizontal direction.

A presser rod 22 is attached to the support rod 12, and a slide support portion 20 at the end of the presser rod 22 is loosely fitted into the T-shaped cross section of the support rod 12.

The presser rod 22 has a presser rod main body 24 that projects horizontally from the slide support portion 20, and a presser rod 28 that is suspended from the presser rod main body 24.

A plurality of adjustment holes 26 are bored in the longitudinal direction of the presser rod main body 24, and the upper part of the presser part 28 is
It is locked in one of the adjustment holes 26 with a pin or the like.

In this way, the presser portion 28 is attached to the presser rod main body 24 so that its position can be adjusted freely, and is not rotated in the left-right direction in the figure.

In the figure, the right side surface of the holding portion 28 serves as a protective surface for the concrete plate 14.

The presser rod 22 as a whole has an L-shaped shape rotated 90 degrees clockwise. A locking fitting 34 is provided at the lower end of the support rod 12 for fixing a horizontally extending locking rod 32 for lifting concrete, which has a horizontal hole 30 drilled toward the surface of the concrete plate 14. .

A large impact or couple force is applied to the locking fitting 34 from the concrete plate 14, and the locking rod 32
Since it also provides leverage, the shape should be sufficiently thick. A hole 36 is provided through the right end of the locking metal fitting 34 from the top surface to the bottom surface, and the locking rod 32 is firmly attached to the locking metal fitting 34 by a bolt nut 40 that is inserted through a through hole 38 provided in the locking rod 32. Fix it.

Further, the locking rod 32 itself is made of a thick steel material to ensure strength, and by forming the plurality of through holes 38, the locking rod 32 can be adjusted to slide in the horizontal direction.

In this way, by making it possible to change the horizontal protrusion length of the locking rod 32, the depth of the lifting hole 41 bored perpendicularly to the right vertical plate surface of various concrete plates 14 can be changed. It is possible to fully accommodate the differences in

When hoisting the concrete plate 14 using the concrete plate hanging fitting 10 configured as described above, as shown in FIG.
Slide the presser part 28 upwards to remove it from the concrete plate 14, and remove the concrete plate 1.
The locking rod 32 is inserted horizontally into the lifting hole 41 reinforced by a buried metal fitting (not shown) buried perpendicularly to the right vertical plate surface of 4, and reaches the inner depth thereof. In this state, the presser rod 22 is lowered and the concrete plate 14 is pressed by the presser part 28.
The left vertical plate surface 42 of is supported and fixed.

Next, among the plurality of shackle receiving holes, the shackle receiving hole 18 is located vertically above the line that is the center of the concrete plate 14 in the horizontal direction, or if there is no shackle receiving hole at that position, the left side thereof. A shackle 46 attached to the tip of a wire rope 44 from a crane is inserted into the shackle receiving hole 18 and locked, and is lifted and transported. As the thickness of the concrete plate increases, the appropriate insertion depth of the locking rod 32 can be adjusted by sliding and fixing the locking rod 32 in the left horizontal direction. Frequent adjustments can be made unnecessary by adjusting the length itself to a slightly longer length.

After the work is completed, by moving the holding part 22 before removing the locking rod 32, the hanging fitting can be easily removed from the concrete plate 14, without any resistance, damage to the wire rope, or reduction in commercial value. This prevents the concrete plate from chipping or falling off.

[Effect of the invention] As described above, when using the concrete plate hanging fixture according to the present invention, even if the thickness of the concrete plate changes over a wide range from several centimeters to several tens of centimeters, the concrete plate can always be fixed without tilting. , the suitable wire rope lifting position can be easily changed and adjusted to the horizontal state,
It is possible to prevent accidents while reducing the cost of hanging fittings and improving work efficiency.

In addition, by attaching a holding rod, it is possible to prevent an unexpected accident of the concrete plate sliding down.

Furthermore, since the concrete plate 14 can be rotated in a vertical plane, the concrete plate can be lifted or fixed at an angle, and the position of the shackle receiving hole can be adjusted. As a result, it is possible to provide an extremely versatile concrete plate hanging fixture that allows the concrete plate to be transported and fixed while being intentionally slightly inclined.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the hanging fitting, FIG. 2 is a cross-sectional view of the support rod, FIG. 3 is a partially sectional front view showing the usage state of the hanging fitting, and FIG.
The figure is a perspective view showing how the hanging fitting is used. 10...Hanging metal fittings, 12...Support rod, 14...
Concrete plate, 16...Bending portion, 18...Shackle receiving hole, 20...Slide support portion, 22...
Holder rod, 24... Holder rod body, 26... Adjustment hole, 28... Holder portion, 30... Horizontal hole portion, 32
...Latching rod, 34...Latching metal fitting, 36...Hole,
38...Through hole, 40...Bolt nut, 41...
Lifting hole, 42... Vertical plate surface, 44... Wire rope, 46... Shackle.

Claims (1)

[Scope of Claims] 1. A substantially T-shaped cross section that is arranged substantially perpendicularly along the surface of the concrete plate 14, the upper part is bent in the direction of the concrete plate 14, and a plurality of locking parts are provided at the upper part. a thick-walled locking metal fitting 34 formed at the lower end of the support rod 12 and having a horizontal hole 30 penetrating therethrough in the horizontal direction; and a horizontal hole portion of the locking metal fitting 34. A locking rod 32 is attached to the rod 30 so as to be able to adjust its protruding length.
and a substantially L-shaped presser rod 22 that is composed of a presser rod main body 24 and a presser portion 28 and that prevents the concrete plate 14 from separating from the locking rod 32; is attached to the support rod 12 so as to be slidable in the vertical direction and protrudes from the support rod 12 in the horizontal direction, and the presser section 28 is suspended from the presser rod main body 24 and presses down according to the thickness of the concrete plate 14. A hanging fixture for a concrete plate, characterized in that the fixture is attached to a rod body 24 so that its position can be freely adjusted in the length direction.