JP2566882B2 - Posture control device for multi-legged block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a posture control device for a multi-legged block, more specifically, a tetrapod (trade name) (hereinafter simply referred to as a four-legged block), which is a product of the applicant, is installed. In this case, the present invention relates to a device for holding a desired posture in advance.

[0002]

2. Description of the Related Art
A four-legged block is widely used when constructing seawalls and wave breakers. This four-legged block is used for multi-layer covering, random loading and horizontal loading according to the local conditions of construction. Is installed by.

When installing the four-legged block, usually, the four-legged block is lifted by a lifting device such as a sling wire or a grab on a work yard or a work boat, and the four-legged block is moved to the installation site for installation. It is preferable that the block is lifted while maintaining the installation posture at the installation site and the subsequent work is performed.

This is because it is a dangerous work to change a heavy four-legged block to a mounting posture in a state where it is lifted by a lifting device, and it is necessary to make a desired posture by performing a tipping operation during the installation. This is because not only cannot be installed accurately, but also some blocks are damaged.

However, although this four-legged block has an upright posture when placed in a flat place, in actuality there are many opportunities to install it in an inverted posture or a dragonfly type posture in consideration of the mutual meshing of the blocks. It is very complicated to sling or lift with a grab while maintaining such a posture, so a large number of skilled workers are required, and various things can be done in order to improve the efficiency and safety of installation work. There was a problem to be solved.

[0006]

Therefore, in the present invention, a suspension frame member is pivotally supported on a horizontal shaft of a gantry body formed of an angle member or the like, and is tiltably held, and a horizontal rotation drive device is provided on the suspension frame member. A saucer on which the four-legged block is placed is arranged, while a plurality of hooks for fixing the legs of the four-legged block placed on the saucer are provided, and the pivotal support portion of the hanging frame member is set to four.
By using a device configured to set the center of gravity of the leg block to hold the four-leg block in the installed posture in advance, it is intended to improve the efficiency and safety of the installation work.

In this case, if the counterweight is arranged at a position facing the horizontal axis of the suspension frame member, the rotational moment generated when the four-legged block is tilted can be reduced, so that the posture control operation is facilitated. Can be achieved.

Furthermore, it is preferable that the tilting operation of the suspension frame member and the horizontal rotation operation of the saucer are performed by the control of a remote operation device connected wirelessly or by wire to further improve the safety.

[0009]

According to the present invention, the four-legged block placed on the saucer is maintained in a desired installation posture by the tilting operation of the suspension frame member and the rotation operation of the saucer on the suspension frame member. It is the one that can be hung by slinging wire or grab.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a posture control device for a four-legged block according to the present invention will be described below in detail with reference to the accompanying drawings.

That is, the attitude control device 10 according to the present invention.
As shown in FIGS. 1 to 3, a gantry body 1 formed by combining angle members and the like to have a trapezoidal side shape.
2, a suspension frame member 16 is tiltably supported on a horizontal shaft 14 horizontally disposed above the gantry body 12.

A rotary drive device 18 is attached to the horizontal shaft 14 through an appropriate speed reducing mechanism (not shown).
This drive device 18 can reduce the required driving force by setting the pivotal support position of the suspension frame member 16 on an extension line that substantially coincides with the center of gravity position X of the four-leg block 20, and is therefore limited to the electric system. Instead, it can be replaced with a mechanical type or a manual type.

On the other hand, a rotary drive device 22 is provided at a substantially central portion of the suspension frame member 16 pivotally supported so as to be tiltable with respect to the gantry body 12.
And a tray 26 on which the four-legged block 20 is placed is attached to the drive shaft 24. In addition, this saucer 2
It is preferable that 6 has a pan shape in which a rising portion 26a is partially provided, and a sliding means 28 such as a bearing is inserted between the tray 26 and the hanging frame member 16 to facilitate the rotation operation of the tray 26. Configure so that you can do it.

1 to 3, reference numeral 30
And 32 are hook members for preventing the counterweight disposed above the suspension frame member 16 and the four-legged block 20 from falling when inclinedly held, and the reference numeral 34 indicates the suspension frame member 16. Rotation drive device 18 and saucer 26
It is a remote control device for remotely controlling the rotation drive device 22 of FIG.

Next, the procedure for controlling the posture of the four-legged block 20 using the posture control device 10 according to the present invention will be described. This posture control device 10 is, for example, as shown in FIG. It is installed between a large number of four-legged blocks that are statically placed at A and the installation crane 36, and the installation crane 3
After mounting this four-legged block on the tray 26 of the attitude control device 10 using 6, the operator of the installation crane 36 operates the remote control device 34 to perform desired attitude control,
Again, this four-legged block whose posture is controlled by the installation crane 36 is hoisted and installed.

The operation of the attitude control device 10 itself will be described in more detail. The four-legged block 20 whose attitude is controlled by the attitude control device 10 is tilted as shown in FIG. 5 because of its geometrical characteristics. As it goes, any one of the upright posture A, the inverted posture B, and the dragonfly posture C is obtained, and the other postures are the postures inclined in any direction. Therefore, it is sufficient to tilt the erecting posture A from the inverted posture B by about 63 degrees, and from the upright posture A to the dragonfly posture C by about 55 degrees, so that the suspension frame member 16 can be inclined up to about 63 degrees. You can see that you should set it.

Therefore, when the attitude control device 10 is used, the installation attitude of the four-legged block 20 is A, B, or
Determine which posture of C is the basic posture. Then, first, the four-legged block 20 is placed on the pan 26 in an upright posture. Next, if the inverted posture B is the basic, the leg 26a located at the bottom in the inverted posture B by rotating the tray 26 by the operation of the rotary drive device 22 by the remote control device 34.
And the horizontal axis 14 of the suspension frame member 16 are aligned and aligned so that they are orthogonal to each other, and the suspension frame member 16 is further rotated by the rotation drive device 18 at a desired angle (in the case of the inverted posture B itself, 62.45). By tilting and holding only
It suffices to wait for the hoisting installation work by the installation crane 36. In this case, the leg portions 20a come into contact with the rising portions 26a of the tray 26, and the leg portions 20a are connected to the hook members 32.
It is fixed to the pan 26 by means of (see FIG. 6a).

On the other hand, if the dragonfly posture C is basic, the direction of the axis of a predetermined leg of the four-legged block 20 placed on the tray 26 in the upright posture is set to the remote control device 34 as described above.
The saucer 26 is rotated by the operation of the rotary drive device 22 to set a predetermined direction and each leg is fixed to the saucer 26 by the hook members 32. Next, the rotary drive device 18 is used to move the suspension frame member 16 to a desired angle (54.35 degrees in the case of the dragonfly inverted posture C itself).
Only by holding it at a slant, it is sufficient to wait for the lifting and installation work by the installation crane 36 (see FIG. 6b).

Further, even if it is based on the upright posture A, it is possible to similarly maintain a desired posture by a combination of the rotating operation of the tray 26 and the tilting operation of the suspension frame member 16. Needless to say.

[0020]

As described above, according to the attitude control device of the present invention, the four-legged block can be easily set to a desired installation attitude by combining the operation of rotating the tray and the operation of inclining the suspension frame member. Since it can be controlled and held, the installation work of this type of four-legged block can be mechanized, and therefore, not only the installation work efficiency but also the safety improvement can be achieved. Further, since the counterweight is arranged at a position facing the horizontal axis of the suspension frame member, the rotational moment generated when the four-legged block is tilted is reduced, and the tilting operation can be performed extremely easily. Since the posture control is performed by remote control, there are various advantages such as improvement of safety during movement or installation work.

Although the preferred embodiment of the posture control apparatus for a multi-legged block according to the present invention has been illustrated and described above, the method of the present invention is not limited to this embodiment and deviates from the spirit of the present invention. It goes without saying that various design changes can be made within the range not covered.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing a preferred embodiment of a posture control device for a multi-legged block according to the present invention.

FIG. 2 is a plan view of the attitude control device shown in FIG.

FIG. 3 is a side view of the attitude control device shown in FIG.

FIG. 4 is a schematic explanatory diagram when a four-legged block is installed using the attitude control device shown in FIG.

FIG. 5 is an explanatory diagram showing the geometrical characteristics of a four-legged block whose posture is controlled by the posture control device according to the present invention.

6A and 6B are schematic explanatory diagrams when the posture control device shown in FIG. 1 is used to control the posture of a four-legged block, where a is a control explanatory diagram when the inverted posture is the basic, and b is a dragonfly posture. FIG. 7 is a control explanatory diagram in the case where is the basic.

[Explanation of symbols]

10 attitude control device, 12 gantry body, 14
Horizontal axis, 16 suspension frame members, 18 drive device,
20 four-legged block, 22 rotary drive,
24 drive shaft, 26 saucer, 28 sliding means,
30 counterweight, 32 hook member, 34 remote control device, 36 stationary crane,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Tamuro 4-3778 Irifune-cho, Niigata City, Niigata Pref., Niigata Machinery Maintenance Office, First Port Construction Bureau, Ministry of Transport (72) Inventor Yasuhiro Miyata 2 Nishishinjuku, Shinjuku-ku, Tokyo 7th-1st Nihon Tetrapod Co., Ltd.

Claims (3)

(57) [Claims] 1. A gantry main body for holding a multi-legged block, wherein a pendant frame member is pivotally supported on a horizontal axis of the gantry main body and tiltably held, and a horizontal rotation drive device is mounted on the hang frame member. A pan for mounting the multi-legged block is arranged through the interposition of a plurality of hooks for fixing the legs of the multi-legged block mounted on the pan, and the pivotal supporting portion of the suspension frame member is also provided. An attitude control device for a multi-leg block, wherein the posture control device is set at a substantially center of gravity position of the leg block. 2. The attitude control device for a multi-legged block according to claim 1, wherein a counterweight is arranged at a position facing the horizontal axis of the suspension frame member. 3. The posture control device for a multi-legged block according to claim 1, wherein the posture control device for a multi-legged block is configured to perform a tilting operation of the suspension frame member and a horizontal rotation operation of the tray under the control of the remote operation device.