JP2009126599A - Tool and method for lifting panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for lifting to stably lift a concrete panel such as an outer wall panel in a stood state. <P>SOLUTION: This tool 10 for lifting is constituted of an engaging member 11 engaged to channel steel 4 with a lip buried in the panel 1 and a latching member 12 mounted on the engaging member 11 to latch a hoisting tool W such as a crane wire. The engaging member 11 is provided with a base material 20 covered to stretch over external surfaces of a pair of lip pieces 5 exposed to the surface of the panel 1 in the channel steel 4, a locking material 21 inserted into a groove part of the channel steel 4 and made to abut to stretch over internal surfaces of the pair of lip pieces 5 and a rotary shaft 22 rotatably passed through and supported by the base material 20 and fixed with the locking material 21. The base material 20 is provided with a fitting projection 26 fitted into a gap 6 between the pair of lip pieces 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lifting jig and a lifting method for lifting a concrete panel such as an outer wall panel in an upright state.

  Conventionally, it has been known that lip-shaped channel steel is embedded as an outer wall panel. When lifting such an outer wall panel, a lifting jig is attached to the channel steel, and a crane is attached to the lifting jig. A lifting tool such as a wire is hooked and lifted (see, for example, Patent Document 1).

  The lifting jig is attached to the grooved steel by hooking the engaging member on the grooved steel lip piece, and is used to lift the laid outer wall panel as it is.

  On the other hand, although it is a lifting jig used for lifting associated with the demolding of the outer wall panel embedded with lip grooved steel, the grooved steel is sandwiched between the lip pieces of the grooved steel by the engaging member. In this case, the outer wall panel in the laid state can be lifted even if it is slightly inclined (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 63-190280 JP 2001-293717 A

  When the outer wall panel is painted, the outer wall panel conveyed by the conveyor is reversed, or when storing or transporting the outer wall panel, the outer wall panel is stood on a rack or the like, and the outer wall panel is laid down. It may be lifted while standing.

  When lifting such an outer wall panel, the lifting jig attached to the grooved steel of the outer wall panel is lifted in a rollover state, and an eccentric force acts on the lifting jig. It is necessary to attach the grooved steel so as not to be displaced.

  However, the lifting jig is attached to the grooved steel by hooking the engaging member to the grooved steel lip piece, or sandwiching the grooved steel lip piece by the engaging member. When lifting the outer wall panel upright using such a lifting jig, the lifting jig can easily move with respect to the grooved steel. There was a risk that the outer wall panel would fall off.

  An object of the present invention is to provide a lifting jig and a lifting method for solving the above-described problems and stably lifting the panel upright.

  In order to solve the above-mentioned problems, a lifting jig 10 according to the present invention is attached to an engaging member 11 that engages a grooved steel 4 with a lip embedded in a concrete panel 1, and the engaging member 11. The engaging member 11 straddles the outer surfaces of the pair of lip pieces 5 and 5 exposed on the panel surface of the grooved steel 4. A base material 20 to be covered, a locking member 21 that is inserted into the groove portion of the channel steel 4 and straddles the inner surfaces of the pair of lip pieces 5, 5, and rotates to the base material 20. A rotation shaft 22 that is freely penetrated and supported and to which the locking member 21 is fixed, and the base member 20 is provided with a fitting protrusion 26 that is fitted into the gap 6 between the pair of lip pieces 5 and 5. It is characterized by that.

  Specifically, the hooking member 12 is fixed to the base material 20 so as to stand up obliquely with respect to the panel surface in a state where the engaging member 11 is engaged with the channel steel 4. Yes.

  The fitting protrusion 26 of the base member 20 has a thickness equivalent to the thickness of the pair of lip pieces 5 and 5 and a width equivalent to the width of the gap 6, and is fixed to the rotating shaft 22. The locking member 21 is rotatable while being in surface contact with the fitting protrusion 26.

  In the lifting method of the present invention, the engaging member 11 of the lifting jig 10 is engaged with the grooved steel 4 of the panel 1 and a crane wire or the like is suspended on the hooking member 12 of the lifting jig 10. In this state, the panel 1 is lifted in a state where the panel 1 is erected so that the grooved steel 4 is turned sideways by hooking the tool W and pulling up the hanging tool W in this state.

  If the jig for lifting of this invention is used, when the engaging member is engaged with the grooved steel of the panel, the lip piece of the grooved steel is sandwiched from inside and outside by the substrate and the locking material, and the substrate Since the fitting protrusions are fitted into the gaps between the lip pieces of the grooved steel, the lifting jig can be firmly attached to the grooved steel so as not to be displaced. As a result, when the lifting tool hung on the lifting member of the lifting jig is pulled up and lifted with the panel upright so that the grooved steel is in the horizontal direction, the lifting jig rolls over Even if an eccentric force is applied to the lifting jig when lifted, the panel can be lifted stably without causing the panel to stagger or fall off.

  In addition, since the locking member of the engaging member is fixed to the rotary shaft that is penetrated and supported by the base material, it is only necessary to rotate the rotary shaft on the surface side of the base material to rotate the locking material. The joint member can be locked to the lip piece of the grooved steel, whereby the lifting jig can be easily attached and detached.

  In addition, since the latching member for latching the hanging tool stands up in an oblique direction with respect to the panel surface, it is possible to eliminate the interference with the panel surface of the hanging tool and prevent damage to the panel surface, It can be lifted stably while suppressing the fluctuation of the panel in the horizontal direction.

  Furthermore, since the fitting protrusion of the substrate has a thickness equivalent to the thickness of the lip piece of the channel steel and a width equivalent to the width of the gap between the lip pieces, Can be fitted to fit tightly. Moreover, by rotating the locking material while making surface contact with the fitting protrusion, the locking material can be brought into tight contact with the inner surface of the lip piece of the grooved steel without being inclined. As a result, rattling of the engaging member with respect to the channel steel can be reliably prevented, and the panel can be lifted more stably.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 7 shows an outer wall panel 1 made of concrete. The outer wall panel 1 is formed by embedding a pair of grooved steels 4 and 4 with a lip along a longitudinal direction thereof in a concrete base 3 having a substantially rectangular outer shape. The lip pieces 5 and 5 are exposed on the panel surface. The outer wall panel 1 is not limited to the one in which the pair of channel steels 4 and 4 are embedded as described above, but may be one in which a single channel steel 4 is embedded.

  A lifting jig 10 according to an embodiment of the present invention is used to lift the outer wall panel 1 in a state where it is laid from the laid state, as shown in FIGS. It comprises an engaging member 11 that engages with the channel steel 4 of the outer wall panel 1 and a hooking member 12 that is attached to the hooking member 11 and hooks a hanging tool W such as a crane wire.

  The engaging member 11 is inserted into the base 20 that covers the outer surfaces of the pair of lip pieces 5, 5 in the channel steel 4 and the groove portion of the channel steel 4, so that the pair of lip pieces 5, 5 A locking member 21 that is in contact with the inner surface, and a rotary shaft 22 that is rotatably supported by the base member 20 and to which the locking member 21 is fixed are provided.

  The substrate 20 includes a substantially rectangular plate 24, a short cylindrical boss 25 projecting from the center of the surface of the plate 24, and a fitting projection 26 projecting from the back surface of the plate 24. The fitting protrusion 26 is inserted into the gap 6 between the pair of lip pieces 5 and 5 to prevent the engagement member 11 from rattling with respect to the channel steel 4, and the thickness of the lip pieces 5 and 5. And a width equivalent to the width of the gap 6, and is provided over the entire length in the longitudinal direction at the center in the lateral direction of the substrate 20.

  The locking member 21 is formed in a substantially rectangular plate shape in which a pair of opposite corner portions are obliquely cut, and the length in the longitudinal direction is longer than the width of the gap 6 between the lip pieces 5 and 5. The length in the short direction is shorter than the width of the gap 6 between the lip pieces 5 and 5. The locking member 21 rotates around the rotating shaft 22 while rotating the rotating shaft 22 while being in surface contact with the fitting protrusion 26 of the base material 20.

  The rotating shaft 22 is inserted through the boss 25 of the base material 20 and is disposed through the plate 24 and the fitting protrusion 26. A shaft 30 for preventing the rotation shaft 22 from coming off and rotating the rotation shaft 22 is supported through one end of the rotation shaft 22 protruding from the boss 25. A locking member 21 is fixed to the other end of the rotating shaft 22.

  The latching member 12 is formed in a substantially U shape, and both ends thereof are bent in a direction away from each other. The latching member 12 rises in an oblique direction with respect to the panel surface in a state where the engaging member 11 is engaged with the grooved steel 4, that is, obliquely above the plate 24 of the base material 20. Both end portions are fixed to end portions along the longitudinal direction of the plate 24 of the base material 20 by welding or the like.

  Next, a method for lifting the outer wall panel 1 using the lifting jig 10 will be described. First, the engaging member 11 of the lifting jig 10 is engaged with one channel steel 4 of the outer wall panel 1 in the laid state.

  In this engagement, as shown in FIG. 3, the plate 24 of the base member 20 of the engagement member 11 is covered from above so as to straddle the outer surfaces of the lip pieces 5, 5 of the grooved steel 4. The material 21 is inserted into the groove portion of the channel steel 4, and the fitting protrusion 26 of the base material 20 is fitted into the gap 6 between the lip pieces 5 and 5 of the channel steel 4. In this state, as shown in FIG. 4, when the shaft 30 is rotated about 90 ° in the horizontal direction to rotate the rotary shaft 22, the locking member 21 is brought into contact with the fitting protrusion 26 of the base member 20 while being in surface contact. Rotating horizontally, abutting over the inner surfaces of the lip pieces 5 and 5 of the channel steel 4, the engaging member 11 is engaged with the channel steel 4. In this engaged state, the lip pieces 5 and 5 of the grooved steel 4 are sandwiched from inside and outside by the base material 20 and the locking material 21, and the fitting protrusions 26 of the base material 20 are the lip pieces 5 of the grooved steel 4, The gap 6 between the five members 5 is fitted into the gap 6, thereby preventing the engagement member 11 from rattling against the channel steel 4.

  Then, when the hanging tool W1 at the lower end of the hanging tool W is hooked on the hanging member 12 of the lifting jig 10, and the lifting tool W is pulled up in this state, as shown in FIG. 5 and FIG. The outer wall panel 1 is lifted in a state where the outer wall panel 1 is erected so that the sides 4 and 4 are oriented sideways.

  At this time, the lifting jig 10 engaged with the channel steel 4 of the outer wall panel 1 is lifted in a rollover state, and an eccentric force acts on the lifting jig 10 as described above. Since the lifting jig 10 is firmly attached to the grooved steel 4 so as not to be displaced, the lifting jig 10 can be lifted stably without causing the outer wall panel 1 to stagger or fall off. Moreover, since the latching member 12 that latches the hanging tool W stands up in an oblique direction with respect to the panel surface, it is possible to eliminate interference with the panel surface of the hanging tool W and prevent damage to the panel surface. In addition, the outer wall panel 1 can be lifted while suppressing the wobbling in the lateral direction. In this lifting, as shown in FIG. 6, two lifting jigs 10 and 10 are used. However, when the outer wall panel 1 is small, one lifting jig 10 is used. It may be used and lifted.

  In order to remove the lifting jig 10 from the outer wall panel 1 after the lifting operation is finished, the shaft 30 is rotated about 90 ° from the engaged state, the rotating shaft 22 is rotated, and the locking member 21 is moved about 90 times. In this state, the locking member 21 may be extracted from the groove portion of the grooved steel 4.

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention. For example, the panel to be lifted using the lifting jig is not limited to the outer wall panel, but may be other panels such as a floor panel. Further, the fitting protrusion provided on the base member of the engaging member is not limited to the shape as described above, and any fitting protrusion can be used as long as it can be fitted into the gap between the lip pieces to suppress the rattling. Such a shape may be used.

1 is a perspective view of a lifting jig according to an embodiment of the present invention. It is the perspective view which looked at the jig | tool for lifting from the back surface side. It is a longitudinal cross-sectional view which shows the state in the middle of engagement of the jig | tool for lifting. It is a longitudinal cross-sectional view which shows the state after engagement of the jig | tool for lifting. It is a longitudinal cross-sectional view which shows the lifting state of an outer wall panel. It is a front view which shows the lifting state of an outer wall panel. It is a perspective view of an outer wall panel.

Explanation of symbols

  1 .. Panel 4.. Channel steel 5. Lip piece 6. Clearance 10.. Lifting jig 11. Engagement member 12. , 21 .. Locking material, 22 .. Rotating shaft, 26 .. Mating protrusion, W.

Claims (4)

An engaging member (11) that engages with the lip-shaped grooved steel (4) embedded in the concrete panel (1), and a hanging tool (such as a crane wire) attached to the engaging member (11). W) and the engaging member (11) is an outer surface of the pair of lip pieces (5) and (5) exposed on the panel surface of the channel steel (4). A base material (20) straddling over and a locking material inserted into the groove portion of the channel steel (4) and abutting over the inner surfaces of the pair of lip pieces (5) (5) (21) and a rotary shaft (22) rotatably supported by the base material (20) and to which the locking material (21) is fixed. The base material (20) includes the pair of A panel having a fitting projection (26) fitted into the gap (6) between the lip pieces (5) and (5) Jig for the lifting of. In the state where the engaging member (11) is engaged with the channel steel (4), the hooking member (12) rises in an oblique direction with respect to the panel surface, and the base material (20) The panel lifting jig according to claim 1, which is fixed to the panel. The fitting projection (26) of the substrate (20) has a thickness equivalent to the thickness of the pair of lip pieces (5) and (5) and a width equivalent to the width of the gap (6), and the rotation The panel lifting jig according to claim 1 or 2, wherein the locking member (21) fixed to the shaft (22) is rotatable while being in surface contact with the fitting protrusion (26). While engaging the engaging member (11) of the lifting jig (10) according to any one of claims 1 to 3 with the grooved steel (4) of the panel (1), the lifting jig ( 10) A hanging member (12) such as a crane wire is hooked on the hanging member (12), and in this state, the hanging member (W) is pulled up so that the channel steel (4) is turned sideways. A panel lifting method, wherein the panel (1) is lifted in a standing state.