JP5731311B2 - Concrete block lifting jig - Google Patents

Description

  The present invention relates to a concrete block lifting jig that can be safely and reliably operated even when the concrete block is loaded or unloaded by a crane, particularly in a situation where it is easily affected by shaking such as on a hoist ship. Is.

  In a crane, the hook is suspended by a hoisting wire, so if the wire is twisted, the hook rotates, or the hook shakes greatly due to the influence of wind or waves on hoisting ships. Often. In particular, when a heavy object such as a concrete block is lifted by a large crane, the hook is also large, and if it is rotated or shaken, the wire staking operation and the deballing operation become extremely dangerous. Even after the wire is struck, if the hook rotates or shakes, the wire may be pulled or bent, and the operator may be caught in the wire and exposed to a very dangerous state. For this reason, measures such as passing a rope or wire to the hook of a large crane and working so that the worker does not move the hook by pulling the rope or wire over a long period of time are taken. Moreover, it is not always possible to cope with a sudden movement of the hook.

  In addition, the concrete blocks to be lifted are heavy and some have special shapes. If the wires are appropriately hung over the concrete blocks and lifted in a balanced manner, a serious accident may be caused. In addition, it is very dangerous to hang the wire around such a concrete block and to hang it on the hook of the crane while maintaining the state of hanging the wire. Accidents such as being caught in

  For this reason, for example, a wire locking member for laying a wire is fixed to the concrete block in advance, so that the wire can be easily lifted by simply staking the wire locking member without laying the wire around the concrete block. Concrete blocks that can be used are sometimes used.

  If a concrete block with such a wire locking member fixed is used, the wire can be easily attached by simply hooking one end of the wire hooked on the hook of the crane to the wire locking member. Even in such a case, an operator may be caught in the wire and injured or the like due to a sudden movement of a crane hook or the like.

  In this way, when the concrete block and the crane hook are hooked so as to be directly connected with one wire, the worker may be exposed to danger. There is a hanging jig in which a suspension wire to be engaged with a lifting object (a plate-like body) is separately connected and each wire is connected via a frame member having a rectangular planar shape (for example, see Patent Document 1). .)

  However, even if the wire for the crane hook and the wire for the object to be lifted (plate-like body) are separated as described above, the crane hook is greatly moved because it is integrated with the frame material after all. For example, the crane hook wire also shakes greatly, and the wire for the lifting object (plate-like body) integrated through the frame material also moves greatly. As a result, there is not much difference from one wire. The workers still have to do dangerous work.

JP 2000-265667 A (FIG. 1)

  In view of the above problems, the present invention provides a concrete block that can be safely and reliably operated even when the concrete block is loaded or unloaded by a crane, particularly in a situation that is susceptible to shaking such as on a hoist ship. It is an object to provide a lifting jig.

As a result of intensive studies to solve the above problems, the inventors of the present invention, as a concrete block lifting jig, a polygonal metal ceiling frame that matches the shape of the concrete block to be lifted, and a hung on the ceiling frame. It uses a concrete block sling wire that is hung on the passed girder and lifts the concrete block, and a crane hook wire that has a weight attached to one end and the other end slung to the crane hook. If the weight attached to one end of the crane hook wire is slidably embedded in the hollow cylindrical leg fixed to each corner of the top frame, the concrete block sling is applied when the concrete block is not lifted. Because the wire can move independently of the crane hook wire, Even if the crane hook suddenly moves and the crane hook wire is pulled during the operation, the crane hook wire simply slides up and down in the leg body, and the concrete block sling wire does not move in conjunction with it. So you can work very safely,
Also, the crane hook wire can move up and down slidably with the weight attached to one end, so in this state the crane hook wire is pulled by its own weight and will not bend. , Even if the crane hook shakes greatly, the crane hook wire bends and the operator can work safely without being caught in the crane hook wire,
In addition, if a hollow cylindrical cushioning material with an inner diameter that allows the crane hook wire to pass through the weight and not the weight is installed at the end of the top frame side of the leg, the crane hook wire is used as the crane hook and the concrete block. When the crane hook is pulled up after the sling wires are slung on the wire locking members of the concrete block, the weight attached to one end of the crane hook wire rises in the leg body and finally the ceiling of the leg body By contacting the hollow cylindrical cushioning material at the end of the frame, the crane hook wire moves in conjunction with the ceiling frame. Because it moves as a unit, it is possible to lift the concrete block reliably during the actual concrete block lifting work. ,
Also, if a weight collision cushioning material is installed at the end of the leg opposite to the top frame, the crane hook will move suddenly and the weight attached to one end of the crane hook wire will likely collide with the bottom of the leg. The weight collision cushioning material acts as a cushion to prevent damage to the leg body even when the weight of the crane is lowered, and the weight comes off the bottom of the leg body when the crane hook wire is not slung on the crane hook. Can prevent that
In addition, if a pulley that guides the crane hook wire into the leg is attached to the top of each corner of the top frame, the crane hook wire will not be damaged and damaged at the corner of the leg, etc. The weight attached to one end of the crane hook wire can be moved smoothly and slidably within the leg,
And if the shape of the outer surface is the same shape as a part of the side of the concrete block and a guide plate fixed in the vertical direction with respect to the top frame is provided, the guide plate is placed on the side of the same shape of the concrete block. It can be placed on the concrete block exactly by moving it so that it comes in contact with the direction, and the leg is accurately placed on the concrete block by lowering the lifting jig from that position. The present invention has been completed by investigating that this can be done easily.

  That is, the present invention is a concrete block lifting jig used when a concrete block is loaded and unloaded by a crane, and includes a polygonal metal top frame and a girder spanned over the top frame. A concrete block sling wire for lifting the concrete block, a crane hook wire with a weight attached to one end and the other end slung to a crane hook, and a corner frame of the top frame Each is fixed in a vertical direction with respect to the top frame, has a hollow cylindrical shape, and a weight attached to one end of the crane hook wire is slidably incorporated therein, and the end on the top frame side A hollow cylindrical cushioning material with an inner diameter that allows the crane hook wire to pass through and a weight not to pass through, and a weight collision cushioning material to be installed at the end opposite the top frame. Attached to the top of each corner of the top frame and the top frame, a pulley that guides the wire for crane hook into the leg, and the shape of the outer surface is the same shape as a part of the side of the concrete block, A jig for lifting a concrete block, characterized by comprising a guide plate fixed in a vertical direction with respect to a top frame.

A concrete block lifting jig according to the present invention is a concrete block lifting jig used when a concrete block is loaded and unloaded by a crane, and includes a polygonal metal ceiling frame, A concrete block sling wire for slinging a concrete block hung on a girder spanned on a frame, a crane hook wire having a weight attached to one end and the other end slung to a crane hook, Each corner of the frame is fixed in a vertical direction with respect to the top frame, has a hollow cylindrical shape, and a weight attached to one end of the crane hook wire is slidably contained therein. A hollow cylindrical cushioning material with an inner diameter that allows the crane hook wire to pass through the end on the top frame side and not allow the weight to pass through is located at the end opposite to the top frame. Since collision buffer material has a leg which is installed respectively,
When the concrete block is not lifted, the concrete block sling wire can move independently of the crane hook wire. Therefore, the crane hook suddenly moves during the slinging or deballing work on the concrete block, and the crane hook wire is moved. Even if the wire is pulled, the crane hook wire only slides within the leg body, and the concrete block sling wire does not move in conjunction with it, so you can work very safely,
Also, the crane hook wire can move slidably in the leg with a weight attached to one end, so in this state the crane hook wire is always pulled by its own weight and will not bend. The crane hook wire does not bend even if the crane hook shakes greatly, so that the operator can work safely without being caught in the crane hook wire,
In addition, since a hollow cylindrical cushioning material having an inner diameter large enough not to pass the weight through the crane hook wire is installed at the end of the leg frame on the top frame side, the crane hook wire is attached to the crane hook. After the concrete block sling wires are slung on the concrete block wire locking members, when the crane hook is pulled up, the weight attached to one end of the crane hook wire rises in the leg body and finally the leg. By contacting the hollow cylindrical cushioning material at the end of the body's top frame side, the crane hook wire moves in conjunction with the top frame, and the concrete block sling wire is attached to the top frame girder. Since it moves together, it is possible to lift the concrete block securely during the actual concrete block lifting operation. It can be,
Moreover, the leg (support leg 8) of the suspension jig of Patent Document 1 is for securing a space under the frame material so as not to damage the wire or the like when the suspension jig is not used. (Patent Document 1 Paragraph No. 0010), the legs of the concrete block lifting jig according to the present invention are provided at each corner of the polygonal top frame, and are lifted by placing the legs on the concrete block. The purpose is to make it possible to install the entire jig in a stable state, and it is possible to make the slinging work and removing work safe.
Furthermore, since the outer surface has the same shape as a part of the side of the concrete block and has a guide plate fixed in the vertical direction with respect to the top frame, the present invention is suspended from a crane hook. The concrete block lifting jig according to the present invention can be accurately placed on the concrete block only by moving the guide plate so as to abut the side of the concrete block of the same shape. By lowering the lifting jig, it is easy to place the leg on the concrete block easily.
In addition, since the weight collision shock absorbing material is installed at the end of the leg opposite to the top frame, the crane hook suddenly moves and the weight attached to one end of the crane hook wire is the bottom of the leg. Even when it is likely to collide with the weight, the weight collision cushioning material acts as a cushion to prevent damage to the leg body, and when the concrete block lifting jig according to the present invention is not used, the weight is attached to the leg body. Can prevent it from coming out from the bottom,
In addition, a pulley that guides the crane hook wire into the leg body is attached to the top of each corner of the top frame, so that the crane hook wire is not damaged and damaged at the corner of the leg, etc. The weight attached to one end of the crane hook wire can be smoothly and slidably moved within the leg portion.

It is an isometric view explanatory drawing which shows one Example of the jig | tool for lifting the concrete block which concerns on this invention. It is front explanatory drawing which shows a mode that the jig | tool for lifting of the concrete block of FIG. 1 is lifted with the hook of a crane, and approaches the beehive type concrete block. FIG. 1 is a front view showing a state in which the guide plate of the jig for lifting the concrete block in FIG. 1 is brought into contact with the side of the concrete block of the same shape and positioned, and each leg is lowered and placed on the concrete block. It is explanatory drawing. It is front explanatory drawing which shows the state which further lowered | hung the hook of the crane from the state of FIG. It is front explanatory drawing which shows a mode that the slinging wire for concrete blocks was hung from the state of FIG. 4 to the wire latching member fixed to the concrete block. It is front explanatory drawing which shows the state which pulled up the hook of the crane from the state of FIG. 5 until a weight and a hollow cylindrical shock absorbing material latch again. It is front explanatory drawing which shows a mode that the hook of a crane is further pulled up from the state of FIG. 6, and a concrete block is lifted. FIG. 8 is an explanatory plan view of FIG. 7. It is front explanatory drawing which shows a mode that it moved from the state of FIG. It is front explanatory drawing which shows a mode that the hook of the crane was further lowered | hung from the state of FIG. 9, and the beading wire for concrete blocks was removed from the wire locking member of the concrete block. It is front explanatory drawing which shows a mode that the jig | tool for lifting of the concrete block which concerns on this invention is transferred in order to lift the next concrete block after installation of a concrete block is finished. It is front explanatory drawing which shows the other Example of the jig | tool for lifting of the concrete block which concerns on this invention. FIG. 13 is an explanatory plan view of FIG. 12. It is front explanatory drawing which shows the further another Example of the jig | tool for lifting the concrete block which concerns on this invention. FIG. 15 is an explanatory plan view of FIG. 14. It is front explanatory drawing which shows the further another Example of the jig | tool for lifting the concrete block which concerns on this invention. FIG. 17 is an explanatory plan view of FIG. 16.

  Hereinafter, the concrete jig lifting jig according to the present invention will be described in detail with reference to the drawings.

  In the drawings, B is a concrete block that is loaded and unloaded by a crane, and F is a hook that is attached to the tip of a crane wire and on which a jig for lifting the concrete block according to the present invention is slung. The crane in which the hook F is attached to the tip of the wire is large because it lifts a heavy concrete block B, and this crane is not only a thing installed on land, but also like a hoist ship. It may be installed on a large ship.

  Reference numeral 1 denotes a polygonal metal top frame. The top frame 1 is not limited to a rectangular shape, and various polygonal shapes can be used according to the shape of the concrete block B to be lifted. The ceiling frame 1 suspends the concrete block B via a concrete block sling wire 2 hung on a girder 1a spanned on the top frame 1 as will be described later. Must have strength. For this reason, for example, the top frame 1 can be preferably used in which a shape steel such as H-shaped steel or I-shaped steel is formed into a polygonal shape by welding or the like. May be used to increase rigidity and strength.

  2 is a concrete block slinging wire for lifting the concrete block B, which is hung on a girder 1a spanned on the top frame 1. 3 is a weight 3a attached to one end and the other end of the crane. A crane hook wire hung on the hook F is fixed to each corner 1b of the top frame 1 in the vertical direction with respect to the top frame 1 to form a hollow cylindrical shape inside the crane hook. A weight 3a attached to one end of the wire 3 is slidably embedded, and a hollow cylindrical shape having an inner diameter large enough not to pass the weight 3a through the crane hook wire 3 at the end on the top frame 1 side. The cushioning material 4a is a leg in which a weight collision cushioning material 4b is installed at the end opposite to the top frame 1 respectively.

  In the state where the concrete block B is not lifted, the concrete block sling wire 2 can move slidably within the leg 4 of each corner 1b of the top frame 1 regardless of the crane hook wire 3. Even if the crane hook F suddenly moves and the crane hook wire 3 is pulled during the slinging or deballing operation on the concrete block B, the crane hook wire 3 only slides in the leg 4. Because the concrete block slinging wire 2 does not move in conjunction, the work can be done very safely.

  A pulley 5 is attached to the top of each corner 1b of the top frame 1 and guides the crane hook wire 3 into the leg 4. The pulley 5 causes the crane hook wire 3 to be at the corner of the leg 4. Thus, the weight 3a attached to one end of the crane hook wire 3 can be moved smoothly and slidably within the leg portion 4.

  Reference numeral 6 denotes a guide plate whose outer surface has the same shape as a part of the side Ba of the concrete block B and is fixed to the top frame 1 in the vertical direction. The lifting jig according to the present invention can be accurately positioned on the concrete block B simply by moving it so as to abut on the side Ba of the steel, and the lifting jig according to the present invention can be further moved from that position. It is possible to easily place the leg 4 on the concrete block B easily by lowering.

  Such a concrete block lifting jig according to the present invention is actually used to lift a concrete block B in which a wire locking member is fixed in advance in a beehive type as shown in FIGS. First, as shown in FIG. 1, a crane hook wire 3 extending from each corner portion 1 b of the rectangular ceiling frame 1 through a pulley 5 is put on a hook F of the crane. Then, the concrete block lifting jig according to the present invention is lifted by a crane and brought close to the beehive concrete block B as shown in FIG. 2, and the shape of the outer surface is one of the side Ba of the concrete block B as shown in FIG. The guide plate 6 that has the same shape as the part and is fixed in the vertical direction with respect to the top frame 1 is brought into contact with the side Ba of the concrete block B of the same shape, and the lifting jig according to the present invention from that position. Is placed on the concrete block B accurately.

  With the concrete block lifting jig according to the present invention installed on the concrete block B as shown in FIG. 3, the concrete block sling wire 2 is attached to the leg 4 so that the concrete block sling wire 2 bends. By setting the length slightly longer than the full length, the wire locking member fixed to the concrete block B can be easily slung.

  In the state shown in FIG. 3, the weight 3a attached to one end of the crane hook wire 3 is in contact with the hollow cylindrical cushioning material 4a in the leg 4, so that the crane is shaken. When the hook wire 3 is pulled, the weight 3a abuts against the hollow cylindrical cushioning material 4a in the leg 4 and the integrated top frame 1 also shakes greatly. If the other end of the staking wire 2 for the concrete block that is struck is to be struck on the concrete block B, this is a very dangerous operation.

  Therefore, as shown in FIG. 3, from the state where the concrete block lifting jig according to the present invention is installed on the concrete block B, the crane hook F is further lowered as shown in FIG. If the 3a is positioned between the hollow cylindrical cushioning material 4a and the weight collision cushioning material 4b in the leg body 4 so that the locking state between the crane hook wire 3 and the leg body 4 is released, the crane can be operated. Even if it swings, the crane hook wire 3 only slides in the leg 4 and the leg 4 and the top frame 1 to which the leg 4 is fixed do not move together. The staking operation of the concrete block staking wire 2 can be safely performed without being affected by the swinging of the crane (FIG. 5).

  After the concrete block sling wire 2 is safely slung on the concrete block B and then the crane hook F is pulled up, the weight 3a attached to one end of the crane hook wire 3 as shown in FIG. The leg 4 is slid upward until it comes into contact with the hollow cylindrical cushioning material 4a in the body 4. During this time, only the crane hook wire 3 is pulled up, and the other top frame 1 and legs 4 do not move. When the crane hook F is further lifted from the state shown in FIG. 6, the weight 3a is lifted in contact with the hollow cylindrical cushioning material 4a in the leg 4 as shown in FIG. The body 4 is also lifted, the leg 4 is in a state of floating from the concrete block B, and the concrete block sling wire 2 hung on the girder 1a hung on the top frame 1 is gradually pulled up and stretched. Finally, the concrete block B is lifted.

  The concrete block B lifted in this way is moved to the target position by the crane and lowered from the state shown by the broken line to the state shown by the solid line (FIG. 9), and the crane hook F is further pulled down, and the crane hook wire 3 The weight 3a is positioned between the hollow cylindrical cushioning material 4a and the weight collision cushioning material 4b in the leg body 4 to release the locking state between the crane hook wire 3 and the leg body 4, and the crane hook F After the crane hook wire 3 is merely slid within the leg body 4 even if the rocker swings, the concrete block slinging wire 2 is moved from the wire locking member fixed to the concrete block B. The ball is removed (FIG. 10).

  In this way, when one concrete block B is transferred and then the next concrete block B is transferred, the place of the concrete block B to be transferred with the lifting jig according to the present invention hung on the hook F of the crane. (FIG. 11) and the above-described operation is repeated.

  Also, in the case of a concrete block B such as a rectangular block having a rectangular parallelepiped shape as shown in FIGS. 12 and 13, since the wire locking member is fixed in advance, the same as the beehive concrete block B described above. The concrete block B may be lifted and transferred by a simple operation. In the case of a rectangular parallelepiped block, since there is no portion where the guide plate 6 can be fitted into the side Ba of the concrete block B, one of the four corners of the rectangular parallelepiped block as shown in FIGS. What is necessary is just to use the guide plate 6 which makes the shape bent at right angle to the.

  Next, in the case where the concrete block B is a hollow rose type and the wire locking member is not fixed in advance as shown in FIGS. 14 and 15, the present invention is such that each leg 4 is first placed on the concrete block B. The lifting jig according to the above is installed, and the weight 3a of the crane hook wire 3 is positioned in the leg 4 between the hollow cylindrical cushioning material 4a and the weight collision cushioning material 4b. Next, since the four corners of the concrete block B protrude in the vertical direction, for example, the concrete block sling wires 2 are respectively hung on two diagonally protruding portions of these four to the girder 1a of the top frame 1 Scramble. Even in this case, even if the crane hook F suddenly moves and the crane hook wire 2 is pulled, the crane hook wire 2 simply slides within the legs 4 and the concrete block sling wire 3 is Because it does not move in conjunction, it is possible to work safely and reliably.

  When the crane hook F is pulled up, the weight 3a attached to one end of the crane hook wire 3 as shown in FIG. 14 passes through the leg 4 until it abuts against the hollow cylindrical cushioning material 4a in the leg 4. By sliding upward, the concrete block B can be finally lifted.

  Next, in the case where the concrete block B is a quadruped wave-dissipating block and the wire locking member is not fixed in advance, the lower side of the concrete block B as shown in FIGS. The triangular ceiling frame 1 is used so that the leg 4 is placed on each of the tripods and the entire lifting jig according to the present invention can be installed in a stable state. At this time, since the guide plate 6 needs to be attached at a position slightly away from the top frame 1, the guide plate 6 may be attached to the triangular top frame 1 with a reinforcing material extending outward. . Further, if necessary, a reinforcing material may be additionally used outside or inside the triangular ceiling frame 1 to increase rigidity and strength.

  Then, to actually hang the concrete block sling wire 2, as shown in FIG. 16 and FIG. 17, for example, it passes under one of the three legs on the lower side and hangs on the standing leg which is the remaining one leg. After turning, if it is slung on the girders 1a of the triangular top frame 1, the slinging operation can be performed safely in the same manner as the hollow block type concrete block B, and the concrete block B can be reliably lifted.

B Concrete block
Ba side F hook 1 top frame
1a Girder
1b Corner part 2 Concrete block sling wire 3 Crane hook wire
3a Weight 4 Legs
4a Hollow cylindrical cushioning material
4b Weight collision buffer material 5 Pulley 6 Guide plate

Claims (1)

A concrete block lifting jig used when loading and unloading a concrete block (B) with a crane,
A polygonal metal ceiling (1);
A concrete block sling wire (2) for hanging the concrete block (B) hung on the girder (1a) hung on the top frame (1);
A crane hook wire (3) having a weight (3a) attached to one end and the other end slung to a crane hook (F);
Each corner (1b) of the top frame (1) is fixed in a vertical direction with respect to the top frame (1), and has a hollow cylindrical shape. The weight (3a) attached to one end is slidably embedded, and the crane hook wire (3) is passed through the end on the top frame (1) side so that the weight (3a) cannot pass. A hollow cylindrical cushioning material (4a) having an inner diameter of a leg (4) having a weight collision cushioning material (4b) installed at the end opposite to the top frame (1);
A pulley (5) attached to an upper portion of each corner (1b) of the top frame (1) and guiding the crane hook wire (3) into the leg (4);
The outer surface has the same shape as part of the side (Ba) of the concrete block (B), and is composed of a guide plate (6) fixed in the vertical direction to the top frame (1). A concrete block lifting jig characterized by having

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