JP6767463B2 - Plate-shaped suspension frame device and laying method - Google Patents

Description

The present invention relates to a plate-like suspension device such as an asphalt mat and a laying method for laying on the seabed ground or the like in order to increase friction of marine structures, prevent scouring, and prevent bottom sediment from being sucked out.

Conventionally, asphalt mats are laid on the underside of marine structures such as caissons to increase the coefficient of friction, or placed on the upper surface of the seabed to protect the ground from scouring caused by waves and tidal currents. Is used.

As shown in FIG. 16, the asphalt mat 1 is integrally formed by arranging an internal reinforcing member 4 such as a wire mesh or a glass cloth between the asphalt layers 2 and 3 which are divided into upper and lower layers and constructed. The matte wire members 5 are arranged in parallel at predetermined intervals at positions corresponding to the internal reinforcing members.

The mat wire member 5 has eye portions 6 used for cargo handling arranged at both ends thereof, and the eye portions 6 are locked to hooks or the like of a suspension frame so that cargo handling by the suspension frame can be performed. .. Further, the end fixing plate members 7 are arranged so as to be buried in the mat members at both ends of the mat wire member 5, and the fixing plates 8 ... Are arranged at predetermined intervals in the intermediate portion inside the mat. The mat wire member 5 is held so as not to come out from the.

As a suspension frame for carrying a plate-like body such as the asphalt mat, those shown in the following patent documents are known.
Japanese Patent Application Laid-Open No. 3-333633

The suspension frame has a configuration as shown in FIGS. 17 and 18, and the asphalt mat 1 is supported under the suspension frame 50 via a suspension tool, and a large number of suspension frames are attached to the hooks 56 of the crane. The wire members 55 and 55a are used to support the crane.

Further, in the suspension frame 50, as shown in FIG. 18, locking tools 54 and 54a are arranged with respect to the end frame members 53 and 53a provided at both ends of the frame body, and the locking tools are mounted. It is rotatably provided with respect to the end frame member via the horizontal axis, and the locking tool is rotated in a direction of applying tension to the mat wire member of the mat member to reduce the deflection of the asphalt mat 1. The suspension frame 50 is lifted by using the suspension wire members 55 and 55a, and can be moved to an arbitrary position by a crane.

By the way, the place where the asphalt mat is laid is not only the almost flat seabed ground, but also the flat surface of the upper surface and the flat surface of the seabed ground and the flat surface of the upper surface such as the rubble foundation constructed on the seabed. An inclined slope may be positioned so as to connect to a flat surface of the lower surface such as a rubble foundation on the lower surface.

The following Patent Document 2 is proposed as a hanging frame device that can be easily applied to conventional work on a flat place, for the purpose of providing a hanging frame device that enables easy laying of a large-sized mat. It is a thing.
JP-A-2009-137682

As shown in FIG. 19, the suspension frame body 10 for which the length of the crane wire 26 is changed according to the slope of the slope and the asphalt mat is held in a suspended state is adjusted to the state of the site where the mat is constructed. The support frame is bent so that the mat to be supported can be bent in the middle of the frame so that it can correspond to the condition of the construction site.

Therefore, the frame body is divided into a main frame member 13 and a sub frame member 14 via a hinge portion 17 provided at a position biased to one side of the central portion in the length direction of the suspension frame body 10. It is configured so that the sub-frame member 14 can be bent with respect to the main frame member 13.

In the figure, 26 is a crane wire, and 11 is a locked member provided so as to project at a predetermined interval.

The mat 30 is held by the hanging frame body 10 and transported to the construction site, the lower part of the mat 30 is in contact with the slope of the foundation, and the auxiliary legs 20 provided on the frame press the mat on the slope. Stop in contact with.

After that, if the suspension frame body 10 is still to be lowered, the main frame member 13 stops diagonally while riding on the slope, so that only the upper subframe member 14 is centered on the support shaft of the hinge portion 17. Then, it is bent counterclockwise so that the portion of the mat 30 supported by the sub-frame member 14 is positioned so as to ride on the flat surface portion of the foundation.

Then, in that state, the locking holding member provided on the hanging frame body 10 is operated to release the locking of each hanging wire 31, and the mat 30 is released from the frame body in a state of being positioned at a predetermined position. Then, the hanging frame body 10 is raised to cope with the next mat laying work.

Normally, the suspension frame body 10 as described above is used for laying the asphalt mat (flexible plate-shaped body) 1, but when laying it on a rubble mound behind a breakwater, a flat surface portion or a slope is used. There is a change in the partial gradient. Since the hinge portion 17 is not arranged in the portion where the gradient changes, the hanging frame body 10 comes into contact with the rubble mound, which makes it difficult to remove the sling wire rope 28. Therefore, the sling wire rope 28 is lengthened. It has corresponded.

However, as shown in FIG. 20, when the sling wire rope 28 is lengthened, the deflection of the mat becomes larger than necessary when it is lifted. Furthermore, since the wire rope is long, positioning becomes difficult and the construction speed decreases.

In particular, since the sling wire rope is long, the mat bends more than necessary when it is lifted, and the load on the mat is large.

In the case shown in Patent Document 2 shown in FIG. 19, the length of the crane wire 26 is determined according to the gradient, and positioning is required for each gradient.

Further, when laying on a rubble mound behind a breakwater, there is a change in the slope such as a flat surface portion and a slope portion, but the one shown in Patent Document 2 cannot cope with the case where such a gradient changes in two or more places. ..

An object of the present invention is to eliminate the inconvenience of the above-mentioned conventional example and reduce the deflection when the mat is lifted, so that the positioning at the time of laying can be easily performed, the sling wire rope is not tensioned, and the mat can be easily removed. Another object of the present invention is to provide a plate-shaped suspension frame device and a laying method that can be laid regardless of the slope angle and even when the slope change of the cross section is two or more places.

As a plate-shaped suspension frame device for achieving the above object, the present invention according to claim 1 is a vertical suspension frame composed of a vertical beam and a horizontal beam as a suspension frame for suspending a plate-like body such as an asphalt mat. A hinge fitting with two parallel flanges and a hinge fitting with one flange are provided at the end of the short member of the H-shaped suspension member, and these hinge fittings are fitted, connected and connected to make a continuous multi-joint. The gist is that it consists of a main body suspension frame as a frame and an auxiliary suspension frame that suspends and supports the main body suspension frame and is suspended from a crane.

The present invention according to claim 2 uses the suspension frame device of claim 1 as a method for laying a plate-like body, and suspends the main body suspension frame horizontally with an auxiliary suspension frame suspended from a crane. The gist is to suspend a plate-like body such as an asphalt mat with a suspension frame, and lay the plate-like body by changing the plate-like body and the main body suspension frame in the same manner according to changes in the gradient of flat parts, slopes, etc. It is something to do.

According to the first and second aspects of the present invention, by suspending the main body suspension frame with the auxiliary suspension frame, the sling wire rope of the mat can be made to have a normal length, and the deflection of the mat at the time of lifting can be increased. It can be made smaller. Further, the auxiliary suspension frame can be made smaller than the main body suspension frame.

Further, as shown in FIG. 14, since the main body suspension frame is deformed along the gradient according to the gradient change such as the flat portion and the slope portion, the position of the mat can be confirmed at the same time for each gradient, and the sling wire rope is tensioned. It is easy to remove the ball.

In addition to this, as shown in FIG. 15, even if the gradient changes at two or more places, the main body suspension frame is deformed according to the convex portion and the concave portion, so that it can be laid with one mat.

Furthermore, the vertical beam of the suspension frame consisting of vertical beams and horizontal beams can be easily formed by using an H-shaped suspension member with a pin structure to form an articulated frame, and the H-type suspension member is a movable joint. By connecting, the H-shaped hanging members of the main body hanging frame independently change to the angle according to the gradient. In addition, the movable joint can handle both convex and concave parts.

As described above, the plate-shaped hanging frame device and the laying method of the present invention can reduce the deflection when the mat is lifted, so that the positioning at the time of laying can be easily performed and the sling wire rope is not tensioned. It is easy to remove, and it can be laid regardless of the slope angle of the cross section and when the slope changes at two or more places.

It is a top view which shows one Embodiment of the suspension frame device of the plate-shaped body of this invention, and the suspension frame used in the laying method. It is a side view which shows one Embodiment of the suspension frame device of the plate-shaped body of this invention, and the suspension frame used in the laying method. It is a front view which shows 1 Embodiment of the suspension frame device of the plate-shaped body of this invention, and the suspension frame used in the laying method. It is a top view of the H-shaped suspension member of the main body suspension frame. It is a front view of the H-shaped suspension member of the main body suspension frame. It is a side view of the H-shaped suspension member of the main body suspension frame. It is a front view which cut out a part of the leg part of the H-shaped suspension member of the main body suspension frame. It is a bottom view of the leg part of the H-shaped suspension member of the main body suspension frame. It is a side view of the connecting pin. It is explanatory drawing of the hinge metal fitting (A). It is explanatory drawing of the hinge metal fitting (B). It is explanatory drawing which shows the detail of the suspension plate. It is a side view which shows the transport by a truck. It is explanatory drawing which shows the use situation of the suspension frame device of the plate-shaped body of this invention. It is explanatory drawing which shows the other use situation of the suspension frame apparatus of the plate-like body of this invention. It is explanatory drawing which shows the structure of a general asphalt mat. It is explanatory drawing of the state which the mat member is lifted using the conventional hanging frame. It is explanatory drawing of the support relationship of the conventional suspension frame and a rotatable mat member. It is a side view which shows the other conventional example. It is a front view which shows the deflection of the mat in the conventional hanging frame.

Hereinafter, embodiments of the present invention will be described in detail with respect to the drawings. FIG. 1 is a plan view showing one embodiment of a plate-shaped hanging frame device of the present invention and a hanging frame used in a laying method, FIG. 2 is a side view of the same as above, FIG. 3 is a front view of the same as above, and the present invention also has a vertical beam. A suspension frame composed of 15 and a cross beam 16 is used, and the suspension frame of the present invention is composed of an auxiliary suspension frame 18 suspended from a crane and a main body suspension frame 19 suspended by the auxiliary suspension frame 18. ..

In the main body suspension frame 19, the vertical beam 15 is a hinged articulated frame, and the multi-joint of the vertical beam 15 has a pin structure of a joint of an H-shaped suspension member 21 made of a tubular body. As shown in FIG. 4, the joint structure is provided with two parallel flange hinge metal fittings 22a and a single flange hinge metal fitting 22b at the end of the short member of the H-shaped suspension member 21, and these hinge metal fittings 22a and 22b. And were fitted together and connected by the connecting pin 23 shown in FIG. 9 to be continuous.

The connecting pin 23 has a flange 23a with an enlarged diameter formed at the end thereof, a washer 23b is interposed in parallel with the flange 23a, and the connecting pin 23 is fixed by a split pin 23c. The joint of the suspension member 21 can be connected and separated as needed, and can be transported by a truck or the like as shown in FIG.

The short member of the H-shaped suspension member 21 is a constituent member of the vertical beam 15, the central longitudinal member connecting the short members is a constituent member of the cross beam 16, and the upper surface center of the short member is shown in the drawing. As shown in No. 12, the hanging plate 24 by the flange was projected with a slight inclination.

In the figure, 25 is a mat wire locking portion having an operation lever, which is also provided on each of the short members of the H-shaped suspension member 21.

In addition, two legs 27 having a grounding plate were provided side by side on the lower side of the longitudinal member of the H-shaped suspension member 21.

In this way, the main body suspension frame 19 formed by continuously forming the H-shaped suspension member 21 has a movable joint, and the whole becomes a ladder-shaped frame.

The auxiliary suspension frame 18 is a ladder-shaped suspension frame also composed of a vertical beam 15 and a horizontal beam 16 with respect to the main body suspension frame 19, but they are all fixed members, and even if the length is the main body suspension frame 19, the width is the main body. It is narrower than the suspension frame 19 and can be formed smaller as a whole.

The auxiliary suspension frame 18 can also have a structure that can be disassembled for transportation.

Next, the usage will be described. As shown in FIGS. 14 and 15, the mat 30 as a plate-like body is suspended by a wire 31 by a main body suspension frame 19, and the main body suspension frame 19 is suspended from an auxiliary suspension frame 18 by a wire 32. Is suspended from the crane hook by the crane wire 33.

The mat 30 is held horizontally by the main body suspension frame 19 and transported to the construction site, and the mat 30 is landed on the floor.

The legs 27 of the main body suspension frame 19 stop in a state of pressing the mat 30. The length of the wire 31 is short, the deflection when the mat is lifted can be reduced, and since the main body hanging frame 19 is deformed in the same manner as the mat (slope slope), positioning during laying can be easily performed, and the sling wire rope. No tension is applied to the mat, and the mat wire locking portion 25 can be operated for easy removal.

After opening the main body suspension frame 19 with the mat 30 positioned at a predetermined position in this way, the main body suspension frame 19 and the auxiliary suspension frame 18 are raised to cope with the next mat laying work.

1 ... Asphalt mat 2, 3 ... Asphalt layer 4 ... Internal reinforcing member 5 ... Mat wire member 6 ... Eye part 7 ... End fixing plate member 8 ... Fixing plate 10 ... Hanging frame body 11 ... Locked member 13 ... Main frame Material 14 ... Sub-frame material 15 ... Vertical beam 16 ... Horizontal beam 17 ... Hinging part 18 ... Auxiliary suspension frame 19 ... Main body suspension frame 20 ... Auxiliary legs 21 ... H-shaped suspension members 22a, 22b ... Hinge metal fittings 23 ... Connecting pins 23a ... Flange 23b ... Washer 23c ... Split pin 24 ... Suspension plate 25 ... Mat wire locking part 26 ... Crane wire 27 ... Leg 28 ... Sling wire rope 30 ... Mat 31 ... Wire 32 ... Wire 33 ... Crane wire 50 ... Suspension frame 53 , 53a ... End frame member 54 ... Locking tool 55, 55a ... Hanging wire member 56 ... Crane hook

Claims (2)

As a suspension frame for suspending a plate-like body such as an asphalt mat , two vertical beams of the suspension frame consisting of vertical beams and horizontal beams are attached to the end of the short member of the H-shaped suspension member, and a hinge fitting with a parallel flange and 1 A hinge bracket with a single flange is provided, and these hinge brackets are fitted together to form an articulated frame that is connected and connected to form a main body suspension frame, and an auxiliary suspension that suspends and supports this main body suspension frame from a crane. A plate-shaped hanging frame device characterized by being composed of a frame. Using the suspension frame device of claim 1, the main body suspension frame is suspended by an auxiliary suspension frame suspended from a crane, and a plate-like body such as an asphalt mat is suspended by this main body suspension frame. A plate-shaped body laying method characterized by laying a plate-shaped body by similarly changing the plate-shaped body and the main body suspension frame according to a change in slope such as a slope.