JPS6326388Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a hanging tool for concrete blocks, more specifically, a hanging tool used for suspending and transporting large concrete blocks in accordance with a predetermined legal slope in retaining wall construction, etc. It is about improvement.

In recent years, in order to save labor in retaining wall construction, earth retaining blocks W (dimensions 1250 x 800 mm,
The retaining wall construction is planned to be carried out using a 3-ton lifting crane M on the block foundation B cast on site, as shown in Figure 2. Lift it up to match the slope (see Figure 2), then support it from the construction surface using the pipe support S (second
After installing the steel formwork F (see Fig. 2), line it with a concrete layer C (see Fig. 2), add backfilling material L, and after compacting, remove the formwork F (see Fig. 2). After re-rolling (see Fig. 2), the pipe support S is removed (see Fig. 2), and the second stage blocks W are stacked on top of it (see Fig. 2).

Therefore, it is important that the crane M can reliably and quickly lift the block W in line with the legal slope.

The present invention provides a lifting tool that can reliably, simply and quickly lift such a large block at a hanging slope that matches a certain legal slope by effectively utilizing the lifting force. The purpose is to

Hereinafter, the present invention will be explained in detail based on specific examples shown in the accompanying drawings.

FIG. 3 is a perspective view of the hanger T of the present invention, FIG. 4 is a side view thereof, FIG. 5 is a plan view thereof, and FIG. 6 is a front view thereof.

As shown in the drawing, a suspension main body 1 is provided at the tip of a suspension arm 2, and by lifting the rear end or middle part of the suspension arm 2, a retaining block W is attached to the suspension main body 1 at a predetermined legal slope. It is designed to be hung at a suitable hanging slope.

As shown in FIG. 5, the hanging main body 1 has a back support beam 10 at the rear, and a pair of roughly L beams at the front that can be opened and closed symmetrically laterally around fulcrums R and R.
It is equipped with letter-shaped bell cranks 11, 11. Therefore, the upper end 1 of each of the bell cranks 11, 11
1a and 11a are connected by a biasing member (coil spring) 12 and are constantly biased in a mutually biased state.
Chains 13, 13 are further connected to the upper end thereof, and are connected to both left and right ends of the breath hanger 14, and a hanging member (ring) 1 is connected through the hanging chain.
It is connected to 5.

On the other hand, in the hanging parts of the bell cranks 11, 11,
On the outside, latch pins 16, 16 that can protrude laterally are provided, and buffer rubber plates 17, 17 are attached above and below the latch pins 16, 16. moreover,
A toggle mechanism 18, 18, which is constructed by connecting a pair of toggle links 18, 18 in an articulated manner so as to be bendable and extensible, is disposed in the gap between the hanging parts of the bell cranks 11, 11. When the connecting portion is pulled up and extended, the bell cranks 11, 11 are pressed outward to cause the legs to open.

Next, a fixed pulley 2 is attached to the front end of the hanging arm 2.
0 is provided, and a movable pulley 21 is provided at the rear end of the arm 2 so that its position can be freely adjusted. The position of the movable pulley 21 can be adjusted by selecting one of the fixing holes 22, 22, . ing. Therefore, if the movable pulley 21 is positioned relative to the hanging arm 2 at the rear end, the hanging slope of the suspended block will increase, and by sliding it toward the tip, the hanging slope can be adjusted to be gradually smaller. . A strip 19 is attached to the fixed pulley 20 and the movable pulley 21, one end of which is tied to the connecting portion of the toggle links 18, 18.
The other free end is a loop-shaped hanging portion 19a. In the illustrated example, when the frame 21a of the movable pulley 21 tilts back and forth, the suspension slope changes. It is also possible to further finely adjust the suspension slope by rotating the screw rod 23 extending to the movable pulley frame 21a. Note that 24 is a stay member that serves as a fulcrum of the hanging arm 2.

In the hanging device having the above structure, as shown in FIG.
15 on the crane hook (not shown),
When the entire hanging tool T is lifted, the bell crank 11,1
1 has its upper end pulled outward in the direction of arrow A,
The lower leg portion rotates in the direction of arrow B to perform a leg-closing operation.

Therefore, when the bell cranks 11, 11 are inserted between the two ribs of the concrete block W, and then the lifting force of the hanging tool T is released, the bell cranks 11, 11 are restored by the restoring force of the biasing member (coil spring) 12. As a result, the hanging portion rotates in the direction of arrow C. Then, the latching pins 16, 16 protruding from the bell cranks 11, 11 fit into the rib latching holes on the back surface of the block W, and the block W can be lifted.

Therefore, when a lifting force is applied to the strip 19, the link connecting portions of the tongue mechanisms 18, 18 are pulled up, the tongue links are in an extended state, and the bell cranks 11, 11 are prevented from closing. Therefore, if the hanging portion 19a is hooked to the hook of a crane (not shown) and pulled up, the block W will be stably lifted up while being firmly held by the hanging tool T. It will become.

Then, move the block W to the desired location, remove the strip 19, hook the hanging member 15 to the hook of the crane (not shown), and lift the chains 13, 13, and the bell cranks 11, 11 will close the legs. As the latching pins 16, 16 are moved away from the latching holes in the back rib of the earth retaining block W, the hanging tool T is separated from the block W.

As explained above, according to the present invention, it is possible not only to provide a certain hanging slope to the earth retaining block W to be lifted by disposing the hanging tool main body 1 at the tip of the hanging arm 2, but also to Concrete blocks can be grasped and lifted quickly and reliably using the lifting force, making retaining wall construction work very safe and easy.

[Brief explanation of the drawing]

Figure 1 is a perspective view of an earth retaining block used in retaining wall construction, Figure 2 is an explanatory diagram showing the construction order of retaining wall construction, Figure 3 is a perspective view of a hanging device according to the present invention, and Figure 4 is a perspective view of a retaining block used in retaining wall construction.
The drawings are a side view, FIG. 5 is a front view, and FIG. 6 is a plan view. 1... Hanging tool body, 11... Bell crank, 12
... Biasing member, 13 ... Chain, 14 ... Breath hanger, 15 ... Hanging member, 16 ... Latching pin, 18 ... Toggle link, 19 ... Strip material, 2 ...
...Hanging arm, 20... Fixed pulley, 21... Moving pulley, 22... Fixed hole, W... Earth retaining block,
R...Fulcrum.

Claims (1)

[Scope of Claim for Utility Model Registration] A hanging device body 1 is provided at the tip of a hanging arm 2, and the center of gravity is deflected by lifting the rear end or middle part of the hanging arm 2, and the earth retaining device is suspended from the hanging device body 1. In a hanging tool that gives a predetermined hanging slope to a block W, the target earth retaining block W has two ribs protruding along the hanging direction on its back surface, and these ribs have the rib formation. The suspension arm 2 is provided with fixing holes 22, 22, . It can be selectively fixed to any of the fixing holes, and a fixing pulley 2 is attached to the front end of the fixing hole.
On the other hand, the suspension main body 1 has legs that can be opened and closed symmetrically to the left and right around the fulcrums R and R, and latching pins 16 and 16 are arranged symmetrically on the opening side of each leg. A pair of bell cranks 11, 11 are provided vertically, and a toggle mechanism 18, 18 in which a pair of toggle links 18, 18 are connected in a bendable and extensible manner is interposed in the gap where the bell cranks 11, 11 can hang down. When the connecting portions of both toggle links 18, 18 are pulled up and extended, the bell cranks 11, 11
The bell cranks 11 can be opened laterally by pressing the hanging portions of the bell cranks outward, and the upper ends of these bell cranks 11, 11 are always urged in a biasing state by the urging member 12. Moreover, the upper ends of these bell cranks 11, 11 are connected to both ends of a breath hanger 14 by chains 13, 13, and the upper part of this breath hanger 14 is connected to a hanging member 15, and further, , a strip 19 is disposed at the connecting portion of the toggle links 18, 18 via the fixed pulley 20 and movable pulley 21, and the free end of the strip 19 becomes a hanging portion 19a. The bell cranks 11, 11 of the hanging tool main body 1 inserted between the ribs are suspended in a state where the latching pins 16, 16 are inserted into the latching holes of the ribs in the earth retaining block W. The toggle mechanism 1 is activated by lifting the hanging portion 19a of the strip 19.
A hanging tool for a concrete block, characterized in that the hanging tool 8 and 18 are brought into pressure contact between the ribs of the earth retaining block W in a tensioned state by extending them.