JP5718770B2 - Heavy material transfer device and transfer method - Google Patents

Description

  The present invention relates to a heavy material transfer device and a transfer method.

As a method for transferring a heavy object such as a box culvert to a predetermined installation point in a mountain retaining space formed by ground excavation, for example, a technique as described in Patent Document 1 is known. In the technique described in Patent Document 1, a steel ball is spread on the upper surface of the rail laid to the installation point, a box culvert is placed on the steel ball, and in this state, the box culvert is laterally pulled by a winch or the like to set the installation point. Has been transported to. In some cases, a roller is attached to the rail instead of the steel ball.
In addition, for example, heavy objects may be transferred outside the construction site, such as in a facility such as a factory or in a site of the facility. Furthermore, various types of transfer devices such as various conveyors and large portal cranes are used depending on the type of heavy object to be transferred.

Japanese Patent No. 2879021

By the way, as described above, various types of heavy material transfer devices are used depending on the type of heavy material to be transferred, and these various types of transfer devices are heavy items to be transferred by the respective transfer devices. In many cases, it is specialized for transporting, and is not versatile.
In addition, the transfer device as described above, for example, at the construction site, lays rails from the unloading place to the installation point, and at facilities such as factories, stretches the conveyor from end to end in the factory, or installs a crane. The scale may be relatively large. When such a large-scale transfer device is introduced into a construction site or facility, naturally, the cost associated with the installation of the transfer device may be increased. In particular, at construction sites, some transfer devices may remain in the grout or foundation concrete (leveled concrete), so the remaining transfer devices cannot be reused, resulting in construction costs. May lead to an increase.

  An object of the present invention is to provide a heavy material transfer device and a transfer method that are excellent in versatility and capable of reducing the cost associated with heavy material transfer.

In order to solve the above-described problems, the invention according to claim 1 is a heavy article configured to include at least a rectangular plate-shaped portion that is grounded to the installation point after being transferred to the installation point. In the transfer device,
An endless belt wound around the plate-like portion of the heavy article along the traveling direction of the heavy article;
A sled plate provided between the bottom surface of the plate-like portion and the endless belt,
The endless belt has a belt-like belt main body, and a connecting means for detachably connecting one end and the other end of the belt main body,
The tip of the sled plate is formed so as to protrude forward from the front end of the plate and bend upward when moving.

  According to a second aspect of the present invention, in the heavy article transfer device according to the first aspect, the lower surface of the sled plate is a sliding surface.

The invention described in claim 3 is a method of transferring a heavy object using the transfer device according to claim 1 or 2,
At least two or more belt bodies are laid out so that one end and the other end are separated from each other and at least both ends of the plate-like portion. The plate is set along the length direction of these belt bodies,
Subsequently, the heavy object is placed on the upper surface of the sled plate,
Subsequently, one end and the other end of the belt main body are connected to each other by the connecting means to form an annular shape,
Thereafter, the heavy object is moved along a traveling direction by a moving means and transferred to an installation point.

According to the present invention, since the endless belt is wound around the plate-shaped portion of the heavy object along the traveling direction of the heavy object, the heavy object is moved on the endless belt by moving the heavy object, for example, by moving means. And the endless belt rotates along the traveling direction of the heavy object. Thus, the heavy object can be reliably transferred to the installation point of the heavy object while moving on the endless belt rotating along the traveling direction of the heavy object.
Then, the endless belt is rotated by rotating the endless belt while the endless belt is brought into contact with the tip of the sled plate provided between the bottom surface of the plate-like portion of the heavy object and the endless belt. It can be slid along the warping surface of the part. That is, the rotation of the endless belt can be guided by the warp plate. As a result, the rotating endless belt can be prevented from being caught by the tip of the sled plate itself or from the front end of the heavy plate, and the endless belt can be prevented from being caught by the plate. Since it is guided by the sledge underneath, it is possible to smoothly transfer heavy objects. Furthermore, since the plate-like portion and the endless belt are not brought into direct contact with each other, it is possible to suppress the deterioration of the endless belt and to secure the directionality when transferring a heavy object.
In addition, the endless belt can be attached to the plate-like portion of the heavy object by connecting the one end and the other end of the belt body by the connecting means, and the connection by the connecting means is released, Since the endless belt can be removed from the plate-like portion of the heavy object by separating the belt, the endless belt can be easily attached and detached.
In other words, after being transferred to the installation point, it can be transferred as long as it is a heavy object including at least a rectangular plate-like portion that is grounded with respect to the installation point. Since it can be performed easily, it is excellent in versatility.
Furthermore, unlike the conventional case, it is not necessary to install a large-scale transfer device at a construction site or facility, so the cost can be reduced accordingly. In particular, at the construction site, since the transfer device itself can be removed from the plate-like portion and removed, the transfer device can be reused, and the remaining items left below the plate-like portion can be reduced as much as possible. An increase in construction cost can be suppressed.

It is a perspective view which shows schematic structure of a heavy article. It is a front view which shows the outline of the state which transfers a heavy article with the transfer apparatus of this invention. FIG. It is an enlarged view of A part shown in FIG. It is the elements on larger scale which show the state which removed the front-end | tip part of the sled board shown in FIG. It is a top view which shows the outline of the state which slides a heavy load to the existing heavy load side.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a heavy object. The heavy article 1 of the present embodiment is a box culvert, and includes a lower floor slab 2, an upper floor slab 3, and side walls 4 and 4 provided between both ends of the lower floor slab 2 and the upper floor slab 3. It is formed in a rectangular tube shape.
The lower floor slab 2 is a rectangular plate-like portion that is grounded to the installation point after the heavy object 1 is transferred to the installation point. Further, the lower floor slab 2 which is the plate-like portion is formed with grout holes 2a ... penetrating the lower floor slab 2 in the thickness direction. These grout holes 2a ... are used for filling the gap between the lower surface of the lower floor slab 2 and the installation point with a grout material as necessary after the heavy object 1 is grounded.

The heavy object 1 is carried in by a transport vehicle or the like, and is unloaded at a location away from the actual installation point. From this unloading point to the installation point, a mountain retaining space 5 in which the heavy object 1 is embedded is excavated.
The width of the mountain retaining space 5 is set to be slightly longer than the width of the heavy object 1 (the length between the side walls 4 and 4). Therefore, a slight gap is set between the mountain retaining wall 6 of the mountain retaining space 5 and the side wall 4 of the heavy object 1.
Here, the slight gap between the mountain retaining wall 6 of the mountain retaining space 5 and the side wall 4 of the heavy object 1 is a gap that allows the heavy object 1 to bend the curve of the mountain retaining space 5, Or it is set as the clearance gap required when removing the endless belt 60 mentioned later.
In addition, the foundation concrete 7 is constructed smoothly on the bottom surface of the mountain retaining space 5 with as little unevenness as possible.

In order to transfer the said heavy article 1 from an unloading point to an installation point, the transfer apparatus 50 as shown in FIGS. 2-4 is used.
The transfer device 50 includes an endless belt 60 and a sled plate 70, and the heavy object 1 is attached to both ends of the lower floor slab 2 of the heavy object 1 one by one. Yes.

The endless belt 60 is wound around the lower floor slab 2 along the traveling direction of the heavy object 1. The traveling direction of the heavy object 1 corresponds to the excavation direction of the mountain retaining space 5.
The endless belt 60 includes a belt-shaped belt main body 61 and connecting means for detachably connecting one end and the other end of the belt main body 61.

For example, as shown in FIG. 4, the belt main body 61 is formed by laminating a plurality of synthetic rubber plates 62 in two upper and lower layers so that adjacent end portions of the upper and lower layers are in a staggered position. Although not shown, the low friction material such as ultra high molecular weight polyethylene or fluororesin is attached to the inner side surface of the synthetic rubber plate 62 in a laminated manner to improve the impact resistance and wear resistance of the belt body 61. ing.
In addition, although the belt main body 61 of this Embodiment was set as the above structures, it is not restricted to this. For example, the synthetic rubber plate 62 may be laminated in three or more layers on the upper and lower sides, or may have other forms that do not use the synthetic rubber plate 62.

  Although not shown in the drawings, the connecting means may be any means capable of detachably connecting one end and the other end of the belt body 61. However, it is assumed that the strength enough to prevent the heavy object 1 from being removed even when a load is applied.

As shown in FIG. 3, the sled plate 70 is provided between the bottom surface of the lower floor slab 2 and the endless belt 60, and is long along the front-rear direction of the lower floor slab 2. It is a plate-like body. Further, the front end portion 71 is disposed so as to protrude forward from the front end of the heavy object 1 and is formed so as to warp upward.
The tip portion 71 of the sled plate 70 is a portion that abuts the belt body 61 of the endless belt 60, and the belt body 61 of the endless belt 60 abuts the tip portion 71 of the sled plate 70. By rotating the belt main body 61, the belt main body 61 can be slid along the curved surface of the tip end portion 71. That is, the rotation of the belt main body 61 can be guided by the tip 71 of the sled plate 70. This prevents the belt body 61 of the rotating endless belt 60 from being caught on the front end 71 of the sled plate 70 and from being caught on the front end of the lower floor slab 2 of the heavy object 1. It can be taken under the sled board 70.

  The sled plate 70 is positioned and attached to the bottom surface of the lower floor slab 2 through positioning means (not shown). The sled plate 70 is attached to the lower floor slab 2 by the positioning means so as to be along the front-rear direction of the lower floor slab 2 and not to be displaced during the transfer of the heavy article 1.

Further, the lower surface of the sled plate 70 is a sliding surface 72. Specifically, a stainless steel plate or the like is attached to the lower surface of the sled plate 70, and the lower surface of the stainless steel plate or the like serves as the sliding surface 72.
The sliding surface 72 is a surface that contacts the belt main body 61 of the endless belt 60, and smoothly rotates the belt main body 61 so that the rotating belt main body 61 is not caught by the lower surface of the sled plate 70. Can do.
As the sliding surface 72, a tin plate or the like can be used in addition to the stainless steel plate.

  The belt body 61 preferably has a certain degree of flexibility. That is, if the flexibility is too small, it is difficult to wind the belt body 61 around the lower floor slab 2. On the contrary, if the flexibility is too large, the rotating belt body 61 comes into contact with the upper surface, the front end, and the rear end of the lower floor slab 2. When the rotating belt body 61 comes into contact with the belt body 61 in this way, the belt body 61 may be twisted and the belt body 61 itself may be deteriorated. It is preferable that there is some rigidity.

The tip 71 of the sled plate 70 is configured to be detachable from the main body of the sled plate 70. As shown in FIG. 5, the attachment position of the tip portion 71 with respect to the main body of the sled plate 70 is near the front end of the lower floor slab 2, and the main body of the sled plate 70 after the front end portion 71 is removed is The lower floor slab 2 is set so as not to protrude more than necessary than the front end.
In addition, the attachment strength of the front end portion 71 with respect to the main body of the sled plate 70 is set to such an extent that the belt main body 61 does not come off even when the front end portion 71 comes into contact with the front end portion 71 during the transfer of the heavy object 1.
Thus, since the front end portion 71 is configured to be detachable from the main body of the sled plate 70, the belt main body 61 is utilized by utilizing the flexibility of the belt main body 61 after the front end portion 71 is removed. 61 can be brought close to the front end of the lower floor slab 2. Thereby, the heavy object 1 to which the transfer device 50 is attached can be transferred so as to be as close as possible to a heavy object (an existing heavy object 1a described later) installed in front of the heavy object 1 in the traveling direction. it can. That is, the gap between the heavy object 1 and the existing heavy object 1 a can be a narrow gap that is slightly larger than the thickness of the belt body 61.
Therefore, when the heavy article 1 is moved, the front end portion 71 is arranged to protrude forward from the front end of the lower floor slab 2 and is removed after the heavy article 1 is transferred to the vicinity of the installation point. Become.

And the said heavy article 1 is made to drive | work on the said foundation concrete 7 by the transfer apparatus 50 of the above structures, and is transferred in the mountain retaining space 5 to an installation point.
In addition, the transfer of the heavy article 1 uses the moving means which moves this heavy article 1 along the advancing direction. As this moving means, although not shown, for example, a pulling type such as a winch and a propulsion machine such as a heavy machine can be cited.

Next, a method for transferring the heavy object 1 and a method for installing the transferred heavy object 1 at the installation point will be described.
The heavy object 1 of the present embodiment is a heavy object that is installed second or later among a plurality of heavy objects that are installed in the mountain retaining space 5. Therefore, there is a heavy article that has been constructed prior to this heavy article 1, and in the present embodiment, for convenience, it will be referred to as an existing heavy article 1a.

First, the two belt bodies 61 and 61 are spread on the foundation concrete 7 at the unloading point of the mountain retaining space 5 with one end and the other end separated.
As shown in FIG. 2, when these two belt bodies 61, 61 are attached to the lower floor slab 2, they are shifted from the position of the grout hole 2a formed in the lower floor slab 2. It shall be spread out.

Subsequently, the sled plate 70 is set on the upper surfaces of the belt bodies 61, 61, and the heavy object 1 suspended by a crane or the like is placed thereon. Then, one end and the other end of the belt main bodies 61 and 61 are connected by the connecting means so as to be circular. Thereby, the mounting of the transfer devices 50 and 50 to the lower floor slab 2 is completed. When the mounting is completed, the heavy object 1 is moved by the propulsion machine or the like and transferred to the installation point in the mountain retaining space 5.
As shown in FIG. 3, by moving the heavy object 1 with the propulsion machine or the like in this way, the heavy object 1 moves on the endless belts 60, 60. , 60 rotate along the traveling direction of the heavy object 1.
As described above, the transfer devices 50 and 50 can be mounted on the heavy object 1 and the heavy object 1 can be transferred to the vicinity of the installation point.

In this way, a space in which the belt main body 61 can be removed and a space in which the tip 71 of the sled plate 70 can be removed are secured between the heavy object 1 transferred to the vicinity of the installation point and the existing heavy object 1a. Try to keep it.
When a space is secured between the existing heavy object 1a, the tip 71 of the sled plate 70 is removed using this space. When the front end portion 71 is removed, the belt main body 61 is brought close to the front end of the lower floor slab 2 using the flexibility of the belt main body 61.
Then, while maintaining the state where the belt body 61 is brought close to the front end of the lower floor slab 2, the heavy object 1 is further moved closer to the existing heavy object 1 a. At this time, the gap between the heavy object 1 and the existing heavy object 1 a is a narrow gap that is slightly larger than the thickness of the belt body 61.
Thereafter, the heavy object 1 is lifted by a jack or the like (not shown), the connection by the connecting means is released, and then the belt body 61 is removed. Further, the main body of the sled plate 70 is also removed.

The jack or the like is provided with a fine adjustment function capable of finely adjusting the position of the heavy object 1 while the heavy object 1 is lifted up, and the belt main body 61 and the sled plate 70 are provided. After the removal, as shown in FIG. 6, using this fine adjustment function, the heavy object 1 is moved to the existing heavy object 1a side and installed at the installation point.
When the heavy object 1 is installed at the installation point, the jack or the like is removed using the space around the heavy object 1.
Thereafter, a grout material is injected from the grout hole 2a as necessary, and the lower floor slab 2 and the foundation concrete 7 are brought into close contact with the solidification of the grout material. In the present embodiment, the grout material is injected from the grout hole 2a. However, there is a case where dry mortar is laid in advance and the heavy object 1 is directly installed thereon.

Although the heavy object 1 of the present embodiment is a box culvert, the present invention is not limited to this. As with the lower floor slab 2, the heavy object 1 is transferred to the installation point, and then the installation point. As long as it is configured to include at least a rectangular plate-like portion that is grounded, it can be appropriately handled. For example, an arch culvert, a U-shaped structure such as an inverted T-type retaining wall, an L-shaped retaining wall, or a three-sided water channel may be used.
Further, depending on the type of heavy load, the installation point may be a construction site or in a facility, and the location is not particularly limited as long as there is a space in which the heavy load can be transferred.

According to the present embodiment, the heavy equipment 1 is installed while the heavy equipment 1 is moved on the endless belts 60 and 60 rotating along the traveling direction of the heavy equipment 1 by the transfer devices 50 and 50. It can be reliably transferred to the point.
The sled plate 70 prevents the rotating endless belt 60 from being caught on the front end 71 of the sled plate 70 or from the front end of the lower floor slab 2 of the heavy object 1. Further, since the endless belt 60 is guided under the sled plate 70, the heavy object 1 can be smoothly transferred. Furthermore, since the lower floor slab 2 and the endless belt 60 are not brought into direct contact with each other, it is possible to suppress deterioration of the endless belt 60 and to secure directionality when the heavy object 1 is transferred.
Further, by connecting one end and the other end of the belt main body 61 by connecting means, the endless belt 60 can be attached to the lower floor slab 2 of the heavy object 1, and the connection by the connecting means is released, and the belt main body Since the endless belt 60 can be detached from the lower floor slab 2 of the heavy load 1 by separating one end and the other end of the 61, the endless belt 60 can be easily attached and detached.
In other words, after being transferred to the installation point, it is possible to transfer the heavy object 1 as described in the present embodiment, which is configured to include at least a rectangular plate-like portion that is grounded to the installation point. Since the transfer devices 50 and 50 can be easily attached and detached, the versatility is excellent.
Furthermore, unlike the conventional case, it is not necessary to install a large-scale transfer device at a construction site or facility, so the cost can be reduced accordingly. In particular, at the construction site, the transfer device 50 itself can be removed from the lower floor slab 2 and removed, so that the transfer device 50 can be reused and the leftovers left below the lower floor slab 2 can be reduced as much as possible. Therefore, an increase in construction cost can be suppressed.

1 Heavy object 1a Existing heavy object 2 Lower floor slab (plate-shaped part)
2a Grout hole 3 Upper floor slab 4 Side wall 5 Retaining space 6 Retaining wall 7 Foundation concrete 50 Transfer device 60 Endless belt 61 Belt body 62 Synthetic rubber plate 70 Sled plate 71 Tip 72 Sliding surface

Claims (3)

In the heavy material transfer device configured to include at least a rectangular plate-shaped portion that is grounded to the installation point after being transferred to the installation point,
An endless belt wound around the plate-like portion of the heavy article along the traveling direction of the heavy article;
A sled plate provided between the bottom surface of the plate-like portion and the endless belt,
The endless belt has a belt-like belt main body, and a connecting means for detachably connecting one end and the other end of the belt main body,
An apparatus for transferring a heavy article, wherein the tip of the sled plate is formed so as to protrude forward from the front end of the plate and bend upward when moving.   The heavy material transfer device according to claim 1, wherein a lower surface of the sled plate is a sliding surface. A method for transferring a heavy article using the transfer device according to claim 1, comprising:
At least two or more belt bodies are laid out so that one end and the other end are separated from each other and at least both ends of the plate-like portion. The plate is set along the length direction of these belt bodies,
Subsequently, the heavy object is placed on the upper surface of the sled plate,
Subsequently, one end and the other end of the belt main body are connected to each other by the connecting means to form an annular shape,
Thereafter, the heavy object is moved along the traveling direction by a moving means and transferred to an installation point.

Images