JP2007077567A - Hanging tool for unit member for retaining wall in large-sized concrete block retaining wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hanging tool dispensing with prior and posterior attitude adjusting work of a unit member for a retaining wall because of lifting the unit member for the retaining wall according to a designed gradient and lowering it into an installation place while holding its attitude. <P>SOLUTION: The hanging tool comprises a base member stuck to the end part back face of the unit member for the retaining wall by a fixing and holding member; an arm member connected intersecting the base end of the base member and formed with a connecting slot in a major axis direction; one or more adjusting pieces changed in length corresponding to the designed gradient of a large-sized concrete block retaining wall; and a connecting implement connected to the end part of a hanging member and inserted in the connecting slot. The connecting implement is engaged with the major axis direction end face of the connecting slot or with the end face of the adjusting piece fitted into the connecting slot corresponding to the designed gradient. The hanging member is thereby connected to the arm member and allowed to come onto a vertical line passing through the center of gravity of the unit member for the retaining wall. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention is used to lift the retaining wall unit member so that the front surface of the retaining wall unit member such as a wall panel is inclined with respect to the vertical line in accordance with the design gradient of the large block retaining wall. The present invention relates to a hanging jig.

In recent years, block retaining walls have been expanded from cranes and other construction machines by increasing the size of retaining wall units such as L-shaped blocks and wall panels in order to reduce labor burdens and labor costs. A retaining wall unit member is lifted to a predetermined height by a suspension member such as the like, and is sequentially assembled (see Patent Document 1).

As a method for lifting the retaining wall unit member, a method using a self-tightening type lifting jig is well known. The suspension jig according to this system connects two sandwiching arms so as to be relatively rotatable by pivots, provides a pressing plate at the opposite end of each sandwiching arm, and places the suspension member at a position away from the pivots. A connecting plate is provided, and when the connecting plate is pulled up by winding the suspension member, the two holding arms rotate in a direction approaching each other, so that the holding wall is interposed between the two pressing plates. The unit member is clamped.

As another lifting method of the retaining wall unit member, a jig mounting hole is provided at a position close to the center of gravity of the retaining wall unit member on the two opposite side surfaces of the retaining wall unit member, and the end of the suspension member A pair of hanging jigs connected to the part is mounted in the jig mounting hole, and the hanging member is wound up.

However, in the self-clamping type lifting jig, if the surface of the retaining wall unit member is wet with mud or the like, or if mud adheres, slippage occurs between the pressing plate and the retaining wall unit member. When the retaining wall unit member is particularly heavy, there is a risk of causing a fall accident during lifting.

Also, in this type of hanging jig, the retaining wall unit member is hung with its front part suspended vertically, and is lowered to the installation site with the front part standing vertically, so that the block with the required design gradient In order to construct a stacking retaining wall, the retaining wall unit member must be lowered and then tilted and adjusted to a design gradient. Alternatively, at the stage before the retaining wall unit member is lowered, the posture of the retaining wall unit member must be controlled so that the front portion has a design gradient.
Most of this adjustment work is done by the labor burden of field workers, but because the retaining wall unit is large and its weight is increased, even if it is moved by a small angle and distance, a great deal of effort is required. It takes time.

The method of fixing the suspension jig by screwing it into the jig mounting hole on the side surface of the retaining wall unit does not cause a problem of dropping off the suspension jig. Because it is necessary to secure a sufficient working space on the side of the unit member, the new retaining wall unit member must be lowered to the installation position with the posture raised on the front side of the adjacent existing retaining wall unit member. As in the case of the self-tightening type lifting jig, the posture of the retaining wall unit member must be adjusted.
In this method, when the front surface portion of the retaining wall unit member is provided with an uneven pattern or the like, the formation of the hanging jig mounting hole and the embedding of the nut type insert may be hindered. And since the suspension position and the center of gravity are close, there is also a problem that the posture of the retaining wall unit member is difficult to stabilize.

Japanese Patent Application Laid-Open No. 6-133671

The problem of the present invention is that the retaining wall unit member can be lifted so that the front portion is aligned with the design gradient, and can be lowered to the installation place while maintaining its posture. It is to provide a hanging jig that does not require posture adjustment work.

The main feature of the invention of claim 1 is that the retaining wall unit is adapted so that the front surface of the retaining wall unit member such as a wall panel is inclined with respect to the vertical line in accordance with the design gradient of the large block retaining wall. A lifting jig used to lift a member,
A base member that is in close contact with and abutted against the rear surface of the end portion of the retaining wall unit member that is the upper side when the retaining wall unit members are stacked, and fixed to the rear surface of the end portion by a fixed holding member;
An arm member that is connected to the base end portion of the base member so that the long axis intersects the front extension line of the retaining wall unit member, and has a long connecting slot along the long axis direction;
One or a plurality of adjusting pieces which are fitted in the connecting slots and whose length is changed in accordance with the design gradient of the large block stacking wall;
It is connected to the end of a suspension member such as a wire from a construction machine, and comprises a connecting tool such as a shackle inserted into the connecting slot of the arm member,
Corresponding to the design gradient of the large block stacking wall, the coupling member is engaged with the end surface in the longitudinal direction of the coupling slot, or is selectively fitted into the coupling slot, and the retaining member The suspension member is coupled to the arm member by engaging the coupling tool with an end face of the adjustment piece fixed to the arm member, and the suspension member is connected to the retaining wall unit member. It was to be on a vertical line passing through the center of gravity.

The main feature of the invention of claim 2 is that, in addition to the above-mentioned configuration of the invention of claim 1, the fixing holding member is disposed penetrating the base member in the front-rear direction, and is fixedly embedded in the retaining wall unit member. A stud bolt member that is screwed to the nut-type insert, a holder member that is fixed to the base member and holds the stud bolt member rotatably and axially immovable, and a base end portion of the bolt member. The rotation operation member provided.

In the suspension jig according to the first aspect of the present invention, the base member abutted against the rear surface of the end portion of the retaining wall unit member is fixed to the retaining wall unit member by the fixed holding member, while the large block stack retaining wall Depending on the selection corresponding to the design gradient, the connecting member at the end of the suspension member is engaged with the end surface in the longitudinal direction of the connecting slot of the arm member, or the connecting member is fitted into the connecting slot and used as a retaining member. Since the coupling tool is engaged with the end face of the adjustment piece fixed to the arm member, and the suspension member is coupled to the arm member, the suspension member is used for the retaining wall when the suspension member is pulled up. It is automatically arranged on a vertical line passing through the center of gravity G of the unit member. For this reason, the retaining wall unit member can be lifted so that its front part is properly aligned with the design gradient and can be lowered to the installation location while maintaining its posture. Posture adjustment work becomes unnecessary.

Further, in this hanging jig, the connecting slot of the arm member is formed long in the long axis direction of the arm member, and the adjustment piece fitted into the connecting slot is formed of the large block stacking wall. Since a plurality of pieces whose lengths are changed in accordance with the design gradient are prepared, it is effectively used for the construction work of large-sized block stacking walls with various gradients.

The connection between the suspension member and the arm member is made by engaging the connection tool with the end surface in the longitudinal direction of the connection slot or the end surface of the adjustment piece, so that the connection mechanism between them The portion is robust, and even if the weight of the retaining wall unit member is loaded, there is no possibility that the coupling mechanism portion is distorted or broken, and the suspension jig has high durability.

According to a second aspect of the present invention, a stud bolt member that penetrates the base member in the front-rear direction is screwed into a nut-type insert that is embedded and fixed in the retaining wall unit member, and is connected to the base end portion of the bolt member. By operating the rotating operation member, the base wall member is fastened to the back of the end of the retaining wall unit member, so that the retaining wall unit member can be securely fixed to the suspension jig without dropping. Thus, lifting, moving, and installation can be performed safely.

In the illustrated embodiment, the base member 2 and the arm member 3 of the hanging jig 1 are integrally formed by two metal plates cut out in an L-shape, and extend over a certain length of the front end surface of the base member 2. Between the front plate 4 that has been welded and the rear plate 5 that has been welded over the entire length of the rear end surface of the base member 2, a cylindrical holder member 6 having a split structure is welded. The fixed holding member 7 is provided near the tip of the base member 2 and descends. Since the intermediate large diameter portion 9 of the stud bolt member 8 is accommodated in the large diameter hollow portion 10 of the holder member 6, the stud bolt member 8 is The base member 2 is held so as not to move in the front-rear direction. The front end portion of the stud bolt member 8 protrudes from the front plate 4 of the base member 2. The rear end portion of the stud bolt member 8 protrudes from the rear plate 5 of the base member 2, and a rotary operation member 11 made of an L-shaped metal rod is welded.

A handle member 12 of a U-shaped metal bar is welded to a portion near the base end of the rear plate 5 of the base member 2, and is used as a handle for carrying the hanging jig 1. Further, it is used for positioning and pressing the suspension jig 1 to the retaining wall unit member 13 when the tip portion of the stud bolt member 8 is screwed into the nut type insert 14 of the retaining wall unit member 13.
In this embodiment, the retaining wall unit member 13 is a rectangular wall panel having a concavo-convex pattern portion 15 on the front surface portion. The nut-type insert 14 is embedded at a depth that is not exposed to the concavo-convex pattern portion 15.

An upper surface plate 16 is welded to the upper end surface of the arm member 3 over the entire length, and spacer plates 17 are welded between the lower end edge portions of the arm member 3 in several places. A spacer plate 18 is welded between the front end edges of the base member 2.
The connecting slot 19 is formed over the length of the half of the arm member 3 having a two-piece structure. The adjustment piece 20 is formed of a metal square bar and has a height dimension and a depth dimension that are just fitted into the connecting slot 19. When a plurality of adjustment pieces 20 are prepared, the length dimension of each adjustment piece 20 is set to a difference in length according to the design gradient (planned gradient) of the large block retaining wall to be constructed. .

There are various standards such as 1-minute gradient, 2-minute gradient, 3-minute gradient, 4-minute gradient, 5-minute gradient, and 6-minute gradient. Depending on the gradient, whether or not to use the adjustment piece 20 and whether to use the adjustment piece 20 of any length even if the adjustment piece 20 is used is selected and determined. .

Here, the 1-minute gradient represents the slope of a hypotenuse in a right triangle with a base length of 1 and a height of 10, and a bisection gradient is a base length of 2 and a height of 10 Represents the slope of the hypotenuse in the right triangle, and the triclinic gradient represents the slope of the hypotenuse in the right triangle with a base length of 3 and a height of 10, and the quadrant slope is the base Represents the slope of the hypotenuse in a right triangle with a length of 4 and a height of 10, and the 5-minute gradient represents the slope of the hypotenuse in a right triangle with a base length of 5 and a height of 10 The six-minute gradient represents the slope of the hypotenuse in a right triangle with a base length of 6 and a height of 10.

A shackle is used as the coupling tool 22 to which the end of the suspension member 21 made of a wire or the like is connected. When the design gradient of the retaining wall to be constructed is a 6-minute gradient, the adjusting piece 20 is not used at all, and the shackle connecting rod 23 is connected to the distal end surface 19a of the connecting slot 19 (the one farthest from the base member 2). (End position of 6 minutes in FIG. 6).
When the design gradient of the retaining wall to be constructed is a five-minute gradient, the adjustment piece 20 dedicated to the five-minute gradient is fitted into the connection slot 19, and the connecting rod 23 of the shackle is the base of the adjustment piece 20. It abuts on the end side end surface (end surface closer to the base member 1) 20b (display position of 5 minutes in FIG. 6).

When the design gradient of the retaining wall to be constructed is a quadrant, an adjustment piece (not shown) dedicated to the quadrant is fitted into the connection slot 19, and the connecting rod 23 of the shackle is used for the adjustment. It abuts on the base end side end face (the end face closer to the base member 1) of the frame (display position of 4 minutes in FIG. 6).
When the design gradient of the retaining wall to be constructed is a three-minute gradient, an adjustment piece (not shown) dedicated to the three-minute gradient is fitted into the connection slot 19, and the connecting rod 23 of the shackle is used for the adjustment. It abuts on the base end side end face (the end face closer to the base member 1) of the frame (display position of 3 minutes in FIG. 6).

When the design gradient of the retaining wall to be constructed is a binary gradient, an adjustment piece (not shown) dedicated to the binary gradient is fitted into the connecting slot 19, and the connecting rod 23 of the shackle is Abutting on the base end side end face (end face close to the base member 1) of the adjustment piece (display position of 2 minutes in FIG. 6).
When fitted into the connection slot 19 of the arm member 3, the front end side end surface 20 a of each adjustment piece 20 abuts on the front end side inner surface 19 a of the connection slot 19. That is, the front end side inner surface 19a of the connecting slot 19 serves as a reference surface.

A screw hole 24 is formed in the intermediate portion of the adjustment piece 20 in the transverse direction, and a disk-shaped flange member 25 is welded to one side surface of the adjustment piece 20 on the extension of the screw hole 24. When the adjustment piece 20 is fitted into the connecting slot 19 of the arm member 3, the flange member 25 comes into contact with one side surface of the arm member. A receiving member 27 that is in contact with the other side surface of the arm member 3 is connected to the head of the tightening bolt member 26 that is screwed into the screw hole 24 of the adjustment piece 20. By tightening 26, the adjustment piece 20 is prevented from moving in the length direction of the connection slot 19, and the adjustment piece 20 is prevented from being removed from the connection slot 19.

When the large block stacking wall having a five-minute gradient is piled up, the adjusting piece 20 dedicated to the five-minute gradient is fitted and fixed in the connecting slot 19 of the arm member 3. The suspension jig 1 thus prepared is attached to the retaining wall unit member 13 that is flatly stacked on a temporary storage site adjacent to the construction site as shown in FIG. The mounting of the suspension jig 1 is performed by placing the base member 2 on the end of the retaining wall unit member 13 which should come to the upper side when the stacking work is performed, and the stud bolt member 8 protruding from the base member 2 is used as the retaining wall unit. This is performed by screwing onto the nut-type insert 14 of the member 13 and rotating the rotation operation member 11 to sufficiently tighten the stud bolt member 8.

The suspension jig 1 equipped with the retaining wall unit member 13 is pulled up from the temporary storage site by operating a construction machine such as a crane and pulling a suspension member 21 such as a wire. The connecting rod 23 of the shackle as the connecting tool 22 is initially engaged with the end portion of the connecting slot 19 near the base member 3, but the connecting rod 23 is connected as shown in FIG. When the connecting rod 23 comes into contact with the base end side end surface 20b of the adjusting piece 20 for the five-minute gradient, the inside of the slot 19 is moved toward the front end side end surface 19a. Stop.

When the withdrawal member 21 is further pulled at this stage, the suspension jig 1 and the retaining wall unit member 13 are lifted in the air as shown in FIGS. 3 and 4 and moved to the stacking place by turning the boom of the construction machine. Be made.
When the suspension member 21 is drawn out at the stacking place, the retaining wall unit member 13 is lowered on the setting surface of the stacking place while maintaining the same posture. After confirming that the retaining wall unit member 13 is stably supported at the installation location by constructing backfill earth and sand until the required heat, etc., loosen the stud bolt member 8 with the rotating operation member 11 and use it for the retaining wall. The base member 2 of the hanging jig 1 is removed from the unit member 13.

In the same manner, the large-sized block retaining wall having various design gradients can be used to replace the hanging jig 1 without replacing the adjusting piece 20 with another length or using the adjusting piece 20 at all. Used to build up.
The hanging jig of the present invention can be applied not only to the above-described wall panel, but also to other shape retaining wall unit members such as an L-shaped block.

In any construction form, whether the connecting rod 23 of the shackle as the connecting tool 20 is in contact with the distal end side end surface 19a of the connecting slot 19 of the arm member 3 and the upper side inner wall surface 19b (in the case of a 6-minute gradient), The connecting rod 23 comes into contact with the base end side end surface 20 b of the adjustment piece 20 and the upper side inner wall surface 19 b of the connection slot 19, and the front end side end surface 20 a of the adjustment piece 20 is the front end side end surface of the connection slot 19. Since the upper outer wall surface 20c of the adjustment piece 20 is in contact with the end surface 19a of the connecting slot 19, the connecting mechanism portion between the connecting tool 20 and the arm member 3 is robust. Even if the weight of the retaining wall unit member 13 is large, the connecting mechanism portion is not distorted or broken, and is excellent in durability.

It is a front view when using a hanging jig according to an embodiment of the present invention to suspend and construct a wall panel type retaining wall unit member, and the suspension jig is attached to the retaining wall unit member. An initial state in which the wall unit member is obliquely raised is shown. FIG. 2 is an enlarged front view of a main part illustrating a process in which a connecting member slides in a connecting slot of an arm member by pulling a suspension member from the initial startup state of FIG. 1. It is a front view when the unit member for retaining walls of FIG. 1 is lifted by the attitude | position of a 5-minute gradient. FIG. 4 is an enlarged front view of a distal end portion of an arm member in the lifted state of FIG. 3. It is a front view when the unit member for retaining walls is lifted in the posture of 6-minute gradient. It is a front view of the hanging jig of FIG. It is a top view of the hanging jig of FIG. It is a right view of the hanging jig of FIG. It is a left view of the hanging jig of FIG. It is a front view of the adjustment piece used for the hanging jig of FIG. It is a top view of the adjustment piece used for the hanging jig of FIG. It is a right view of the coupling tool used for the hanging jig of FIG. It is a front view of the coupling tool used for the hanging jig of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspension jig 2 Base member 3 of suspension jig Arm member 4 of suspension jig Front plate 5 of base member Rear plate 6 of base member Holder member 7 of fixed holding member Fixed holding member 8 Stud bolt member 9 of fixed holding member Middle large-diameter portion 10 of stud bolt member Large-diameter hollow portion 11 of holder member Rotation operation member 12 of fixed holding member Handle member 13 Retaining wall unit member 14 Nut type insert 15 Uneven pattern portion 16 of retaining wall unit member Arm member Upper plate 17 Arm member spacer plate 18 Base member spacer plate 19 Arm member connection slot 20 Adjustment piece 21 Hanging member 22 Connection piece 23 Connection piece connection rod 24 Adjustment piece screw hole 25 Member 26 Tightening bolt member 27 Receiving member G Center of gravity of retaining wall unit member

Claims (2)

A suspension treatment used to lift the retaining wall unit member so that the front surface of the retaining wall unit member such as a wall panel is inclined with respect to the vertical line corresponding to the design gradient of the large block retaining wall. Tools,
A base member that is in close contact with and abutted against the rear surface of the end portion of the retaining wall unit member that is the upper side when the retaining wall unit members are stacked, and fixed to the rear surface of the end portion by a fixed holding member;
An arm member that is connected to the base end portion of the base member so that the long axis intersects the front extension line of the retaining wall unit member, and has a long connecting slot along the long axis direction;
One or a plurality of adjusting pieces which are fitted in the connecting slots and whose length is changed in accordance with the design gradient of the large block stacking wall;
It is connected to the end of a suspension member such as a wire from a construction machine, and comprises a connecting tool such as a shackle inserted into the connecting slot of the arm member,
Corresponding to the design gradient of the large block stacking wall, the coupling member is engaged with the end surface in the longitudinal direction of the coupling slot, or is selectively fitted into the coupling slot, and the retaining member The suspension member is coupled to the arm member by engaging the coupling tool with an end face of the adjustment piece fixed to the arm member, and the suspension member is connected to the retaining wall unit member. A hanging jig for a retaining wall unit member on a large block stacking retaining wall that comes on a vertical line passing through the center of gravity. The fixed holding member is disposed through the base member in the front-rear direction, and is fixed to the base member, a stud bolt member screwed into a nut-type insert embedded and fixed in the retaining wall unit member, 2. The suspension according to claim 1, comprising: a holder member that holds the stud bolt member rotatably and immovably in the axial direction; and a rotation operation member that is connected to a proximal end portion of the bolt member. Ingredients.

Images