JP2015229886A - Gap widening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gap widening device capable of widening gaps between a plurality of external wall panels and other members that are piled on top of each other with a gap in between, with a small force, safely and simply, without damaging surfaces of the members.SOLUTION: A gap widening device 1 has a lever-like body 2 of which an end is a holding part, and two protrusions 3, 4 on the lever-like body 2. The two protrusions 3, 4 are lined up in a lengthwise direction of the lever-like body 2 on the end opposite the end that serves as the holding part of the lever-like body 2, protruding in a same direction that intersects with the lengthwise direction, and are inserted into a gap 21 between members 20 that are piled. The protrusion 3 of the two protrusions 3, 4 is fixed on the lever-like body 2, while the other protrusion 4 is rotatable around an axis in the direction of extension of the lever-like body 2.

Description

  The present invention relates to a gap widening device that widens the gaps of a plurality of members such as outer wall panels stacked with a gap therebetween.

  In the case of a building construction site, etc., when separating and lifting multiple stacked outer wall panels one by one in order from the top, conventionally, the top outer wall panel is manually shifted to open a space below the edge, Work is done to hang a suspension rope such as a crane on this edge. The work for hanging the suspension rope is, for example, a work for attaching a bolt for hanging the suspension rope, a dedicated panel suspension jig, and the like.

  Patent Documents 1 and 2 disclose a technique for lifting flattened outer wall panels by the action of a “lever”. The panel lifting tool of Patent Document 1 lifts a plurality of flat outer wall panels to be transferred to a hand pallet. Further, the panel lifting tool of Patent Document 2 lifts the top outer wall panel among a plurality of stacked outer wall panels, but is applied to a relatively small and lightweight outer wall panel.

Japanese Utility Model Publication No. 5-75216 Japanese Utility Model Publication No. 5-58753

  The conventional work for shifting the uppermost outer wall panel by manually moving the suspension cable may cause damage to the surface of the outer wall panel when the outer wall panel is shifted. Moreover, when the outer wall panel to be lifted is a large and heavy outer wall panel used for a wall of a logistics facility, a convenience store, etc., it requires a lot of labor and there is a risk of accidentally pinching a finger between the upper and lower outer wall panels. . The panel lifting tool described in Patent Document 2 cannot lift such a large and heavy outer wall panel.

An object of the present invention is to provide a gap widening device that can widen the gaps of a plurality of members stacked with a gap between each other safely and easily with a small force and without damaging the surface of the members. That is.
Another object of the present invention is to provide a lifting jig mounting method capable of safely and reliably mounting a lifting jig for hanging a suspension cable on the edge of an outer wall panel.

  A gap widening device according to the present invention is a device for widening the gaps of a plurality of members stacked with a gap therebetween, and a lever-shaped main body having one end serving as a gripping portion, and the gripping portion of the lever-shaped main body, The end portions on the opposite side of the end portion are arranged side by side in the length direction of the lever-shaped main body, each projecting in the same direction intersecting the length direction, and the gap between the stacked members Two projections inserted into the two projections, one projection of the two projections is fixed to the lever-shaped body, and the other projection is a projection direction with respect to the lever-shaped body. It is characterized in that it can rotate around the axis. The clearance gap should just open the clearance gap between the edge parts of a member at least.

  When this gap widening device is used to widen the gap between a plurality of members stacked with a gap between each other, two protrusions are respectively inserted into the gap between two adjacent members in the vertical direction, and the gripping portion of the lever-shaped main body is Then, the lever-shaped main body is rotated about the fixed protrusion as a fulcrum. As the lever-shaped body rotates, the vertical distance between the two protrusions changes, and the upper member is lifted relative to the lower member accordingly. When the lever-shaped main body rotates, the fixed protrusion is in rotational contact with the member, and the rotatable protrusion is in rolling contact with the surface of the member. For this reason, a protrusion and a member do not rub against each other and the surface of the member is not damaged. Since the upper member is lifted by the lever principle, a large force is not required and one person can widen the gap between the members. If the distance between the fixed protrusion and the gripping part of the lever-shaped body is increased relative to the distance between the two protrusions, the gap can be expanded safely and reliably with a small force even for a large and heavy member. it can.

In this invention, of the two projections arranged in the length direction of the lever-shaped main body, the projection closer to the end serving as the gripping portion is used as the fixed projection, and the projection on the far side is used as the projection. It is good to make the protrusion freely rotatable.
In this case, when the lever-shaped main body is rotated to lift the member, the fixed protrusion is in rotational contact with the upper member, and the rotatable protrusion is in rolling contact with the lower member. Therefore, the gap can be expanded without changing the horizontal position of the upper member relative to the lower member.

In the present invention, the lever-shaped main body may have an end portion serving as a gripping portion on a side opposite to a protruding direction of the two protrusions with respect to a plane on which the two protrusions protrude.
In this case, the hand does not interfere with the member when the lever-shaped main body is rotated by grasping the end portion serving as the grip portion with the hand.

In this invention, it is good to provide the coating | coated which prevents a slip with the said member on the outer periphery of the said 2 protrusion.
In this case, since no slip occurs between the protrusion and the member, the gap widening operation can be performed more safely and reliably.

  The gap widening device of the present invention can be applied to a large and heavy member such as an outer wall panel.

  The mounting method of the lifting jig according to the present invention is a method of mounting a lifting jig for hanging a lifting rope on an edge of the outer wall panel, which is the member, using the gap widening device, and the gap widening device The process of widening the gap between the top outer wall panel and the second outer wall panel from the top among the plurality of outer wall panels stacked with a gap therebetween, and the gap holding member is inserted into the widened gap And a process of attaching the lifting jig to the uppermost outer wall panel.

  According to this method of attaching the lifting jig, the gap between the uppermost outer wall panel and the second outer wall panel from the top is widened by the gap widening device, so that the lifting jig is attached to the uppermost outer wall panel. It can be installed safely and securely.

  A gap widening device according to the present invention is a device for widening the gaps of a plurality of members stacked with a gap therebetween, and a lever-shaped main body having one end serving as a gripping portion, and the gripping portion of the lever-shaped main body, The end portions on the opposite side of the end portion are arranged side by side in the length direction of the lever-shaped main body, each projecting in the same direction intersecting the length direction, and the gap between the stacked members Two projections inserted into the two projections, one projection of the two projections is fixed to the lever-shaped body, and the other projection is a projection direction with respect to the lever-shaped body. Therefore, the gaps of the plurality of members stacked with a gap therebetween can be expanded safely and easily with a small force and without damaging the surface of the member.

  The mounting method of the lifting jig according to the present invention is a method of mounting a lifting jig for hanging a lifting rope on an edge of the outer wall panel, which is the member, using the gap widening device, and the gap widening device The process of widening the gap between the top outer wall panel and the second outer wall panel from the top among the plurality of outer wall panels stacked with a gap therebetween, and the gap holding member is inserted into the widened gap Since the process includes the process and the process of attaching the lifting jig to the uppermost outer wall panel, the lifting jig for hanging the lifting rope on the edge of the outer wall panel can be safely and reliably attached.

(A) is a front view of the gap widening apparatus which concerns on one Embodiment of this invention, (B) is the side view. It is a fracture | rupture side view of a part of the clearance gap expansion apparatus. It is explanatory drawing of the clearance gap expansion operation | movement of the member by the clearance gap expansion apparatus. It is explanatory drawing of the method of attaching the lifting jig | tool for hanging a suspension rope on the edge of an outer wall panel using the clearance gap expansion apparatus.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view and a side view of a gap widening apparatus according to an embodiment of the present invention. The gap widening device 1 has a lever-shaped main body 2 whose one end is a gripping portion H, and an end of the lever-shaped main body 2 opposite to the end that becomes the gripping portion H of the lever-shaped main body 2. Two columnar projections 3 and 4 are provided side by side in the length direction. Each protrusion 3, 4 protrudes in a direction intersecting the length direction of the lever-shaped main body 2. The projection 3 closer to the gripping portion H is fixed to the lever-like body 2, and the projection 4 farther from the lever-like body 2 is rotatable about the axis in the protruding direction with respect to the lever-like body 2. A coating 5 made of a rubber material or the like is provided on the outer periphery of the protrusions 3 and 4. The coating 5 is provided for preventing slippage with a member to be widened and for protecting the surface of the member.

  The lever-shaped main body 2 of this embodiment includes a round pipe portion 6 that occupies the most part including the end portion that becomes the grip portion H, and a plate-like portion 7 provided with protrusions 3 and 4. The circular pipe part 6 and the plate-like part 7 are connected to each other by inserting the insertion part 7 a provided in the pipe into the hollow hole 6 a of the round pipe part 6. The insertion part 7a is bent at a predetermined angle θ on the opposite side to the protruding direction of the protrusions 3 and 4 with respect to the main body part 7b on which the protrusions 3 and 4 are provided. For this reason, with respect to the plane F on which the two protrusions 3 and 4 are provided, the end portion serving as the grip portion H is located on the opposite side to the protruding direction of the protrusions 3 and 4.

  The fixed projection 3 is made of a bolt or the like, is inserted through a through hole (not shown) formed in the plate-like portion 7, and is fixed by a nut 8. On the other hand, the support part of the protrusion 4 which can rotate freely has a structure shown in FIG. That is, a cylindrical bearing housing 9 with a flange is fixed to the plate-like portion 7 of the lever-shaped main body 2 by a plurality of fixing pins 10 at the flange portion, and the projection 4 is formed by two bearings 11 accommodated in the bearing housing 9. The base 4a is rotatably supported. The two bearings 11 are rolling bearings such as deep groove ball bearings, and are prevented from coming off by retaining rings 12 fitted to the inner periphery of the bearing housing 9.

A method of operating the gap widening device 1 will be described.
For example, as shown in FIG. 3A, the two protrusions 3 and 4 are inserted into the gaps 21 of the plurality of members 20 stacked with a gap therebetween as shown in FIG. Grab and pull up. The fixed projection 3 is in rotational contact with the upper member 20, and the rotatable projection 4 is in rolling contact with the surface of the lower member 20, as shown in FIGS. In addition, the lever-shaped main body 2 rotates about the fixed protrusion 3 as a fulcrum. As a result, the vertical position of the projection 3 changes as the lever-shaped main body 2 rotates, and the upper member 20 is lifted by being pushed by the projection 3 from below. At this time, the horizontal position of the fixed projection 3 is not changed, and the rotatable projection 4 rolls along the lower member 20. Therefore, the upper member 20 can expand the gap 21 without shifting the horizontal position.

  The above operation can be performed by one person. Since the distance between the projection 3 that is a fulcrum and the gripping portion H of the lever-shaped main body 2 is long with respect to the distance between the two projections 3 and 4, a small force is required even for a large and heavy member. Can easily widen the gap 21. The lever-shaped main body 2 is bent, and when the two protrusions 3 and 4 are inserted into the gap 21 between the members 20, the gripper H is located away from the member 20. The hand that holds the grip portion H does not interfere with the member 20 when operating. Since the coating 5 is provided on the outer periphery of the protrusions 3 and 4, no slip occurs between the protrusions 3 and 4 and the member 20, and the above operation can be performed accurately and reliably. Further, the provision of the coating 5 can prevent the protrusions 3 and 4 and the member 20 from being damaged each other.

  In the illustrated example, the projection 3 on the side close to the gripping portion H is fixed and the projection 4 on the far side is rotatable, but conversely, the projection 3 on the side close to the gripping portion H is rotatable. The projection 4 on the far side may be fixed. In that case, since the lever-like main body 2 rotates about the protrusion 4 far from the gripping portion H as a fulcrum, the gap 21 is expanded while shifting the horizontal position of the upper member 20.

  As a specific method of using the gap widening device 1, a case where a lifting jig for hanging a rope such as a crane is attached to an edge of a member 20 (hereinafter referred to as “outer wall panel”) which is an outer wall panel is used. 4 will be described together with FIG. In addition, since the outer edge of the outer wall panel 20 is thinner than the other parts in the built-up state, the gap 21 between the upper and lower outer wall panels 20 is stacked when stacked as shown in the figure. Is formed.

  First, as shown in FIGS. 2A and 2B, the gap widening device 1 widens the gap 21 between the top outer wall panel 20 and the second outer wall panel 20 from the top. The operation method of the gap widening device 1 is as described above. Next, as shown in FIG. 3C, a gap holding member 22 such as a cushioning material or a crosspiece is inserted into the widened gap 21. In this state, the lifting jig 22 is attached to the uppermost outer wall panel 20. According to this method, since there is a wide gap 21 below the outer wall panel 20 to which the lifting jig 23 is attached, the lifting jig 23 can be safely and reliably attached.

DESCRIPTION OF SYMBOLS 1 ... Gap expansion apparatus 2 ... Lever-shaped main body 3 ... Fixed protrusion 4 ... Rotary protrusion 5 ... Cover 20 ... Member (outer wall panel)
21 ... gap 22 ... gap holding member 23 ... lifting jig H ... grip part

Claims (6)

An apparatus for widening the gap between a plurality of members stacked with a gap therebetween,
A lever-shaped main body whose one end is a gripping portion, and an end of the lever-shaped main body opposite to the end serving as the gripping portion are arranged side by side in the length direction of the lever-shaped main body. Two protrusions that protrude in the same direction intersecting the vertical direction and are inserted into a gap between the stacked members, and one of the two protrusions is the lever-shaped body. And the other protrusion is rotatable about the axis in the protruding direction with respect to the lever-shaped main body.   2. The gap widening device according to claim 1, wherein a projection closer to an end serving as a grip portion of the two projections arranged in a length direction of the lever-shaped main body is the fixed projection. A gap widening device in which the far projection is the rotatable projection.   3. The gap widening device according to claim 1, wherein the lever-shaped main body has an end portion serving as a gripping portion extending in a protruding direction of the two protrusions with respect to a plane from which the two protrusions protrude. A gap widening device located on the opposite side.   The gap widening apparatus according to any one of claims 1 to 3, wherein a coating for preventing slippage with the member is provided on an outer periphery of the two protrusions.   The gap widening apparatus according to any one of claims 1 to 4, wherein the member is an outer wall panel. A method for attaching a lifting jig for hanging a rope to an edge of an outer wall panel as the member, using the gap widening device according to any one of claims 1 to 4,
A step of widening the gap between the outer wall panel on the top and the second outer wall panel from the top of the plurality of outer wall panels stacked with a gap between each other by the gap widening device;
A process of inserting a gap holding member into the widened gap;
Attaching the lifting jig to the top outer wall panel;
A method of attaching a lifting jig including

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