JP3154099U - Hanging device - Google Patents

Abstract

Provided is a suspension device capable of performing a suspension operation without removing the balance even when another suspension operation needs to be performed after a four-point suspension operation of a wide steel plate using a balance. A suspension device 1 having a hacker claw protruding from the lower end of a main body plate toward the inner surface side, and a hook capable of hooking a wire rope sling on the rear surface side of the main body plate. Are attached to the crane hook 6 via a balance 7 so that the hacker claws are inward of each other, and the wide steel plate W1 is lifted and transported by four-point suspension using the hacker claws. When lifting other workpieces such as narrow steel plates and round bar workpieces, you can suspend using a sling material hung on the hook on the back side, without having to remove the balance. Efficiency is improved. [Selection] Figure 3

Description

  The present invention relates to a suspension device, and more particularly to a suspension device having a novel configuration that can be applied to lifting and transporting a steel plate regardless of width and can be applied to other uses.

  When lifting and transporting a wide steel plate, it is usually performed by four-point suspension using a suspension device called a hacker. That is, as shown in Patent Document 1, a long material (called a balance) is suspended from a crane hook, and a sling material such as a pair of wire rope slings is hung near both ends of the balance in the longitudinal direction. A hacker is connected to the lower end of the material via a shackle. At this time, the claws (hooks) at the lower end of the hacker are directed inward so as to face each other on both sides in the width direction of the steel sheet, and each pair of hacker claws is rotated from both sides in the width direction to the bottom surface and supported near the four corners of the steel sheet. Lifting and transporting in a stable state.

  When four sling members are hung directly on the crane hook, the sling member has a large hanging angle, and the tension on the sling member increases (if it is hung at a 45 degree inclination, it is 1.14 times, and a hung at a 60 degree inclination is 2 Double the tension). In addition, when the suspension angle is increased, a hacker that is connected to the lower end of the sling material and lifts the steel sheet tends to move toward the center in the longitudinal direction, and as a result, the steel sheet may tilt and lead to a fall accident. There is. For this reason, in the case of four-point suspension, a normal balance is used to prevent the suspension angle from becoming excessively large.

JP 2003-306291 A

  Lifting and transporting using conventional hackers is effective when targeting wide steel plates, but when trying to lift extremely narrow steel plates, the hacker's claw tips used in pairs at both ends of the steel plate May interfere. In such a case, it is necessary to use a hacker instead of another suspension device. Also, when lifting a workpiece other than a steel plate, for example, a product processed into a round bar shape, another lifting device must be used instead of a hacker.

  However, since a balance is usually used when lifting and transporting a wide steel plate by four-point suspension using a hacker, when the hacker is replaced with another lifting device, after removing the set of balance from the crane hook, Other sling materials had to be hung on the crane hook, and the work efficiency was significantly reduced.

  Therefore, the problem to be solved by the present invention is to make it possible to perform the lifting work without removing the balance even when it becomes necessary to perform another hanging work after the four-point hanging work of the wide steel plate using the balance. It is an object of the present invention to provide a new configuration that makes it possible to improve work efficiency.

  In order to achieve this object, the present invention according to claim 1 is provided with a hacker claw protruding from the lower end of the main body plate toward the inner surface side, and a metal fitting capable of hanging a sling material on the back side of the main body plate. A suspension device provided, wherein the suspension device is used as a pair and is attached to a crane hook with a balance so that the hacker claws are inward of each other, and the steel plate is lifted and transported using the hacker claws. And a second method of lifting and transporting a workpiece using a sling material hung on a metal fitting on the back side.

  According to a second aspect of the present invention, in the suspension device according to the first aspect, the metal fitting on the back side is a hook having a substantially bowl shape or a substantially U shape.

  According to a third aspect of the present invention, in the suspension device according to the second aspect, the hook is welded and fixed to the back side of the main body plate.

  According to a fourth aspect of the present invention, in the suspension device according to the second aspect, the hook is rotatably attached to a member welded and fixed to the back side of the main body plate.

  According to a fifth aspect of the present invention, in the suspension device according to the first aspect, the metal fitting on the back side is a substantially ring-shaped metal fitting for passing a sling material.

  According to the present invention, a steel plate can be lifted and transported using an inward hacker claw as in the prior art, and a workpiece can be lifted and transported using an outward metal fitting. Therefore, when it becomes necessary to lift another workpiece, such as a narrow steel plate or a round bar-shaped workpiece, after hanging a relatively wide steel plate on a crane hook via a balance by four-point suspension. However, it is possible to perform the hanging work using the metal fittings facing outward without removing the balance, and the work efficiency is improved.

1 is a perspective view of a suspension device according to an embodiment of the present invention. It is the side view (A) and back view (B) of this suspension device. It is explanatory drawing which shows the example at the time of hanging four wide steel plates using this suspension apparatus. It is explanatory drawing which shows the example when lifting a narrow steel plate using this suspension apparatus. It is explanatory drawing which shows the example when lifting a round bar-shaped workpiece | work using this suspension apparatus. It is the side view (A) and back view (B) which show the modification of this suspension apparatus. It is the side view (A) and back view (B) which show the other modification of this suspension apparatus. It is the side view (A) and back view (B) which show the other modification of this suspension apparatus. It is the side view (A) and back view (B) which show the other modification of this suspension apparatus.

  1 and 2 show a suspension device according to an embodiment of the present invention. The suspension device 1 has a main body plate 4 in which a hacker claw 2 is bent inwardly at a lower end and a suspension hole 3 is formed at an upper end. The main body plate 4 has substantially the same shape and configuration as a conventionally known hacker.

  The suspension device 1 of the present invention is characterized in that an outward hook 5 is provided on the back side of the main body plate 4. The hook 5 is configured to include a hook body 51 having a substantially bowl shape in a side view, and a detachment stop 53 that is rotatably provided on an upper end protrusion 51 a of the hook body 51 by a shaft pin 52. The main body plate 4 is integrally fixed by welding to the outer surface. The stopper 53 is always urged to rotate in a direction to be engaged with the inner surface of the hook body tip 51b by a spring 54 hung between the upper end of the hook body.

  The suspension device 1 can be used for lifting and transporting a relatively wide steel plate in the same manner as a conventionally known hacker. An example of this case is shown in FIG. 3. A pair of wire rope slings 8, 8 are hung near the both ends in the longitudinal direction of a balance 7 suspended on a crane hook 6, and shackles 9, 9 are attached to the lower ends thereof. The suspension devices 1 and 1 are suspended using the suspension holes 3, and the steel plate W1 is supported by the hacker claws 2 and 2 of each pair of suspension devices 1 and 1 facing each other, and is suspended by four-point suspension. By using the balance 7 having a length corresponding to the length of the steel plate W1, the hanging angle of the wire rope slings 8 and 8 is relatively small, so that the tension applied to the wire rope slings 8 and 8 can be reduced. In addition, it is possible to prevent the occurrence of slipping in which the suspension devices 1 and 1 move toward the longitudinal center, thereby performing a stable suspension operation.

  According to the present invention, the balance 7, the wire rope slings 8 and 8, the shackles 9 and 9, and the suspension devices 1 and 1 are suspended from the clay hook 6, in other words, the balance 7 and the like need to be removed from the clay hook 6. Without the above, the wire rope slings 10 and 10 can be hung on the outward hooks 5 and 5 provided on the back side of the suspension devices 1 and 1 to lift another workpiece. FIG. 4 shows an example of lifting a narrow steel plate W2, and FIG. 5 shows an example of lifting a round bar-shaped workpiece. Since it is possible to lift the narrow steel plate W2 or the round bar-shaped workpiece W3 using the outward hooks 5 and 5 without having to remove the balance 7 or the like, the work efficiency is improved.

  FIG. 6 shows a modified example of this suspension device. A hook 14 with a detent 13 is pivoted outwardly via a connecting pin 12 to an attachment member 11 welded and fixed to the outer surface of the main body plate 4. It is attached.

  FIG. 7 shows another modification of the suspension device, and a U-shaped (J-shaped) hook 15 is welded and fixed outward on the outer surface of the main body plate 4.

  FIG. 8 shows still another modification of the suspension device. A belt sling bracket 18 is rotatably attached to a connecting body 17 of a mounting plate 16 welded and fixed to the outer surface of the main body plate 4.

  FIG. 9 shows still another modified example of this suspension device. A bolt 20 is bridged between a pair of attachment members 19, 19 fixed by welding to the outer surface of the main body plate, and the master link 21 is suspended from the bolt 20. Yes.

  Also in the suspension devices according to the modified examples shown in FIGS. 6 to 9, the steel plate W1 can be lifted by the opposite hacker claws 2 and 2 in the same manner as a conventionally known hacker (see FIG. 3), and the balance 7 and the like are also provided. A steel plate W2 having a narrow width, a round bar-shaped workpiece W3 and the like using metal fittings (hook 14, hook 15, belt sling metal fitting 18, master link 21) provided on the back side of the main body plate 4 without being removed. It can also be used for lifting other workpieces (see FIGS. 4 and 5). In the case of the modification shown in FIGS. 8 and 9, a belt sling is used instead of the wire rope slings 10 and 10, and the belt sling 18 or the master link 21 is used.

DESCRIPTION OF SYMBOLS 1 Lifting device 2 Hacker claw 3 Hanging hole 4 Main body board 5 Hook 51 Hook main body 52 Axle pin 53 Detachment 54 Spring 6 Crane hook 7 Balance 8 Wire rope sling 9 Shackle 10 Wire rope sling 11 Mounting member 12 Connecting pin 13 Detachment 14 Hook 15 Hook 16 Mounting plate 17 Connector 18 Belt sling bracket 19 Mounting member 20 Bolt 21 Master link

Claims (5)

A suspension device having a hacker claw protruding from the lower end of the main body plate toward the inner surface side, and a metal fitting capable of hanging a sling material on the back side of the main body plate, and using the suspension device in pairs The hacker claws are attached to the crane hook with a balance so that the hacker claws are inward of each other, and the first method of lifting and transporting the steel plate using the hacker claws and the sling material hung on the metal fitting on the back side is used. The suspension device can be used for the second method of lifting and transporting workpieces. The suspension device according to claim 1, wherein the metal fitting on the back side is a hook having a substantially bowl shape or a substantially U shape. The suspension device according to claim 2, wherein the hook is welded and fixed to the back side of the main body plate. The suspension device according to claim 2, wherein the hook is rotatably attached to a member fixed to the back side of the main body by welding. The suspension device according to claim 1, wherein the rear side metal fitting is a substantially ring-shaped metal fitting through which a sling material passes.

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