JPH0614184U - Panel lifting clamp - Google Patents

Abstract

(57) [Summary] [Purpose] To efficiently lift and lower panels. [Structure] A support plate portion 15 directed to the lower side of the panel P is provided at the lower end portion of the clamp main portion 11 which is U-shaped as a whole, and a clamp arm 18 is provided at the upper end portion.
Is rotatably provided. This clamp arm 18
A holding plate portion 19 is rotatably provided at the tip of the holding plate portion 19. When the one end side of the clamp arm 18 is pulled up, the holding plate portion 19 is rotated.
Presses the panel P closely. Therefore, when the clamp main portion 11 is set on the side portion of the panel P and one end side of the clamp arm 18 is pulled up by a crane or the like, the panel P is strongly clamped between the holding plate portion 19 and the support plate portion 15 and lifted. To be

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a panel lifting clamp for sandwiching a panel and lifting the panel by a crane or the like.

[0002]

[Prior art]

 When constructing the outer wall, floor, roof, etc. of a building with, for example, lightweight cellular concrete panels (hereinafter referred to as ALC panels), at the construction site, the ALC panels are lifted from the ground by cranes, etc. Carry it up to work. Specifically, for example, when laying a roof, first, several ALC panels are hung up one by one and laid between the beams of the skeleton to form a work stage, and further stacked on the ground in multiple stages. The ALC panel group is piled up from the ground in a crane on the work stage on the upper floor. Then, each ALC panel group is placed on a roof cart one by one, carried to the laying place, and laid down as a roof.

By the way, when hoisting ALC panel groups stacked in multiple stages on the ground, it is possible to hoist a so-called triangular sling made of L-shaped steel or the like to both sides of the lower edge of the panel group with a crane. is there. However, the ALC panel that initially constitutes the working stage cannot be lowered so that it is laid between the beams when the triangular sling is used. Therefore, in such a case, conventionally, a worker on the ground winds a nylon sling or the like around the central portion of the ALC panel, and hooks this on the hook of the crane to lift the ALC panel.

[0004]

[Problems to be solved by the device]

 However, the operation of lifting the panels one by one from the stacked ALC panel group to make a gap, passing a string-like material such as a nylon sling through the gap, and winding the string around the ALC panel makes the nylon sling flexible. Therefore, there is a problem that it takes a lot of time for the worker to do it by himself. In addition, when lowering the ALC panel lifted using nylon sling and removing the sling, in particular, the ALC panel is built into the structural frame and the ALC panel is lowered onto the built-in floor or roof. If this is the case, it is necessary to either lift the panel once or make a gap to remove the sling to lower the ALC panel, and there was the problem of taking the same time as the ground preparation work for lifting.

Therefore, an object of the present invention is to provide a panel hoisting clamp that can efficiently hoist and hang down a panel.

[0006]

[Means for Solving the Problems]

 The panel hoisting clamp of the present invention is for hoisting the panel by sandwiching the panel and pulling it up with a crane or the like, and a support plate portion directed to the lower surface side of the panel and the panel from the support plate portion. A clamp main part that wraps around the side part of the clamp and extends to the upper surface side, and a clamp arm that is rotatably provided on this clamp main part and that lifts one end side to clamp the other end side to the upper surface side of the panel. It is characterized by its structure.

Further, a pressing plate portion for pressing the upper surface side of the panel may be rotatably attached to the other end side of the clamp arm.

[0008]

[Action]

 To lift a panel using the lifting clamp of the present invention, do the following: Set the clamp main part on the side of the panel so that the support plate part goes under the panel. In this state, both ends of the clamp main portion wrap around the panel so as to sandwich the panel from above and below, the support plate portion is located on the lower end side, and the clamp arm is located on the upper end side.

When one end of the clamp arm is pulled up by a crane or the like, the wire of the crane pulls and the other end of the clamp arm pivots downward, so the panel is supported by the support plate and the other end of the clamp arm. It is sandwiched and fixed between the parts and is lifted up in that state. When the panel is hoisted, the weight of the panel acts as a force to more strongly pinch the panel between the clamp arm and the support plate, so the hoisted panel does not fall.

Further, when the hoisted panel is lowered to a required place, the crane wire is loosened and the clamp is loosened. Thus, for example, if the panel is lowered into a position where it is supported at its ends, the clamps can be removed simply by lowering the panel.

[0011]

【Example】

 An embodiment in which the present invention is embodied as a lifting clamp for an ALC panel P will be described with reference to the drawings.

FIG. 1 is a perspective view showing the entire structure, in which a clamp main part 11 includes a pair of main plates 12 each having a substantially U shape, which are connected to each other at predetermined intervals by connecting plates 13 and 14. It has a connected structure.

A rectangular support plate portion 15 is fixed to a lower end portion of the clamp main portion 11, and a cushion rubber plate 16 is attached to an upper surface of the support plate portion 15. On the other hand, a support shaft 17 is provided between the two main plates 12 at the upper end of the clamp main portion 11, and a clamp arm 18 is rotatably supported by the support shaft 17. The rotation fulcrum of the clamp arm 18 is located below the center, and a plurality of engagement holes 18a are formed above the rotation fulcrum.

A pressing plate portion 19 is provided at the lower end of the clamp arm 18. Two support plates 20 having an L-shaped cross section are fixed to the upper surface of the holding plate portion 19 in opposite directions, and the support plates 20 are rotatably supported by bolts 21. The holding plate portion 19 is rotatable at an end portion of the clamp arm 18 opposite to the engagement hole 18a. A buffer rubber plate 22 is attached to the lower surface of the pressing plate portion 19 as in the support plate portion 15.

Now, in order to lift, for example, an ALC panel with the above-described clamp, the following is done.

First, as shown in FIG. 4, the end of the panel P located at the top of the stacked ALC panels is lifted, and the square bar 23 is inserted to make the ALC panel P float. . Then, the clamp main portion 11 is directed to the side center portion of the ALC panel P, and the support plate portion 15 is inserted under the ALC panel P. Further, the wire 25 from the crane is connected to the engaging hole 18a of the clamp arm 18 via the U-link 24. In this state, the support plate portion 15 is inserted deeply into the lower surface of the ALC panel P substantially in the center, and the holding plate portion 19 of the clamp arm 18 is placed on the upper surface of the ALC panel P as shown in FIG. ing.

Here, when the wire 25 of the crane is hoisted up, the side of the engaging hole 18a of the clamp arm 18 is pulled up and pivots around the support shaft 17, and as a result, the holding plate portion 19 is ALC. Hold the top surface of panel P. On the other hand, since the support plate portion 15 is in a state of supporting the ALC panel P on the lower side of the ALC panel 11, the ALC panel P is eventually sandwiched between the support plate portion 15 and the holding plate portion 19. And is clamped. Then, when the wire 25 is further wound up, the ALC panel P is lifted as it is, and the supporting plate portion 15 and the pressing plate portion 19 are located at substantially the center of the ALC panel P. Therefore, as shown in FIG. P is lifted while maintaining a substantially horizontal state.

Next, when lowering the ALC panel P thus suspended, for example, the ALC panel P can be lowered so that both ends of the panel P are supported between the beams of the structural body. By doing so, the wire 25 of the crane is loosened at the moment when the both ends of the ALC panel P are supported by the beam, so that the pulling force from the wire 25 acting on the clamp arm 18 is exerted. Disappears, and the tightening force applied to the panel P suddenly weakens. Therefore, the operator can easily remove the clamp from the panel P, for example, by holding the clamp main part 11 and pulling it lightly.

As described above, if the panel hoisting clamp of this embodiment is used, the ALC panel P is lightly lifted, the support plate portion 15 is inserted below the ALC panel P, and the clamp arm 18 is pulled up by a crane or the like. The ALC panel P is clamped and lifted by itself. Therefore, if the troublesome work of carefully winding the sling around the center of the ALC panel P is not necessary, the clamp work can be performed with one touch, and the lifting work of the ALC panel P one by one is extremely efficient. You will be able to do it.

Of course, in this case, the weight of the ALC panel P acts as a force for sandwiching the ALC panel P, so that a sufficient clamping force can be obtained and the ALC panel P does not fall.

Moreover, since the support plate portion 15 is configured to support the ALC panel P at the substantially lower center of the ALC panel P, it is possible to lift the ALC panel P in a substantially horizontal state as shown in FIG. it can. Therefore, the ALC panel P can be laid down in a substantially horizontal state on the frame of the building, and especially when the floor or roof of the building is laid with the ALC panel P, work can be performed extremely efficiently and it is safe. Further, in particular, when the holding plate portion 19 is rotatably attached to the clamp arm 18 as in the present embodiment, the holding plate portion 1 is automatically attached to a plurality of types of ALC panels P having different thickness dimensions. 9 rotates and comes into close contact with the entire surface to hold it down, so that the ALC panel P can be clamped stably. Further, in order to cope with a plurality of types of panels having different thicknesses as described above, a plurality of engaging holes 18a are formed in the clamp arm 18 as in the present embodiment, and the mounting position of the U-link 24 is set on the panel. It is also effective to make them different according to the thickness dimension of.

Further, when the ALC panel P is hung, if the both ends of the ALC panel P are lowered to a position where they are supported between the beams of the structural frame, the clamping force will naturally weaken after the panel P is supported by the beams. Therefore, the clamp can be easily removed, and the hanging work is extremely simple compared to the conventional method in which it was necessary to remove the string-like material such as nylon sling wrapped around the panel while lifting the panel. . Moreover, since the panel P is only clamped from one side, it is possible to bring the next panel P down while closely adhering to the panel P previously built. Therefore, when a panel P is built in the structural body to form a horizontal plane or a gently sloping surface like a floor or a roof, if the panel P that was previously built is closely attached and the next panel P is lowered, the clamp Not only can it be removed easily, but the lowered panel P can be built in the same position, eliminating the need to move the panel and greatly improving work efficiency.

In particular, when constructing a pitched roof, due to the pitch, several ALC panels are laid in advance to create a work stage, and a group of ALC panels stacked in multiple stages is lifted from the ground, It is not possible to carry out the work procedure of carrying one by one from the roof cart to the laying site. For this reason, ALC panels must be hung from the ground one by one, and hung down one by one to be attached to the body. In such a case, it is possible to use the present embodiment device not only for efficiently lifting the ALC panels one by one, but also for the lifting and mounting work with one touch as described above. In this case, work efficiency will be dramatically improved.

The present invention is not limited to the embodiments described above and shown in the drawings. For example, when a panel having a constant thickness is hoisted, the clamp arm 18 is provided with a pressing plate portion 19. It is possible to achieve the intended purpose sufficiently even if it is not movable, and the panel to be lifted is not limited to the ALC panel, but may be a general concrete panel or a wood plywood panel. It can be implemented with various modifications without departing from the above.

[0025]

[Effect of device]

 As described above, according to the panel hoisting clamp of the present invention, it suffices to lift it with a crane or the like by directing it to the panel, so to speak, the panel can be clamped and hoisted with one touch. It can proceed extremely efficiently.

Moreover, when the panel is hung, the clamp can be easily removed with one touch if it is hung while both ends are supported, and since it is only clamped from one side, it can be closely attached to the adjacent panel. It has an excellent effect that it can be hung down and the hoisting work can be performed very efficiently as a whole.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

[Figure 2] Side view

FIG. 3 is a plan view.

FIG. 4 is a perspective view showing a state before the panel is clamped.

FIG. 5 is a perspective view showing a state in which the panel is lifted up.

[Explanation of symbols]

 11 ... Clamp main part 15 ... Support plate part 17 ... Spindle 18 ... Clamp arm 19 ... Holding plate part P ... ALC panel

Claims (2)

[Scope of utility model registration request] 1. A support plate portion for lifting the panel by sandwiching the panel and pulling it up by a crane or the like, and a support plate portion directed to a lower surface side of the panel, and a side of the panel from the support plate portion. And a clamp arm that is rotatably provided on the clamp main part and that hangs up one end to clamp the other end to the upper surface of the panel. Panel lifting clamp. 2. The clamp for lifting a panel according to claim 1, wherein a holding plate portion for holding the upper surface side of the panel is rotatably attached to the other end side of the clamp arm.