JPH0619642Y2 - Sea garden building equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides caisson and submerged boxes for seabed (including lakebed and riverbed,
The same shall apply hereinafter) relates to a seabed formation device for constructing the ground for installation in the same.

[Conventional technology and its problems] Conventionally, the seabed for installing caisson and submerged boxes has been paved with stones to withstand the weight of the caisson. However, in the conventional method, many places still rely on manpower. A safe, efficient, and mechanical construction method that can cope with the deepening of construction work is desired.

For example, in the conventional creation of the seabed ground, by a rubble ship,
Stones are thrown in at the approximate seabed position, suspended from the sea and pressured with dead weights, and divers line stones. However, recent constructions are gradually expanding into deep water, and the risk of diving work is increasing. In addition, since a hanging type machine is easily affected by tidal currents and the positioning accuracy deteriorates, it is desired to develop a highly accurate construction method for deep water, which replaces the conventional construction method.

In addition, the seabed where ordinary caisson, etc. are installed is cut off from the surface of the sea by a rubble ship and rubbed above the "Kamaboko", and the weight suspended from the sea surface is used for pressure or the diver arranges stones. Are being created. This diving work has a problem that as the water depth increases, the risk of diving disease increases, and since large stones cannot be handled, it is becoming difficult to handle large-scale construction.

[Problems to be solved by the invention] In order to solve the above problems, a dedicated work boat is constructed,
Although it is possible to perform each work of paving stones and pressure, constructing a work boat in order to perform these works exclusively will delay the work because the work boat is congested in the work water area. It is economically problematic to build a work boat suitable for each work.

An object of the present invention is to provide a seabed forming apparatus capable of performing pressure work and installing a concrete block.

[Means for Solving the Problems] In order to solve the above problems, a subsea forming apparatus according to the present invention is a swing crane installed on a work ship, a boom provided on the crane, and the boom. A submarine forming apparatus comprising a pile leader attached to a pile leader and a pile slidably held by the pile leader, wherein a connecting portion is formed at the tip of the pile, and a holding shaft is provided at the connecting portion. And a hook consisting of a support rod fixed to the holding shaft and an engaging portion held and slid by the holding shaft.

[Operation] Therefore, using an existing swing crane, a connecting portion is formed at the tip of the pile, and the connecting shaft is held by the holding shaft, the supporting rod fixed to the holding shaft, and the holding shaft. Further, the concrete block is held and installed by the hook composed of the sliding engaging portion and the concrete block can perform the pressure work. In addition, the turning, lifting and picking functions of the crane allow the tip of the pile slidably attached to the pile leader to be positioned at a specific position on the seabed against the tidal current. In this way, the connecting portion is formed at the tip of the pile, and due to the high positioning accuracy of the tip of the pile, it is possible to perform a pressure work and a concrete block installation.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements and the like in the following description do not limit the present invention and can be variously modified without departing from the spirit of the present invention.

1A and 1B show the first embodiment, FIG. 1A is an explanatory view showing a state at the time of pressure work and a concrete block installation, and FIG. 1B is an explanatory view of connection between a block and a hook. Is.

The device in this example includes a swing crane K and the crane K.
The boom 1 provided on the boom 1, the pile leader 2 attached to the boom 1, the pile 5 slidably held by the pile leader 2, and the like.

The turning crane K of this example is arranged on the work boat S, and the turning crane K is provided with a boom 1. The tip portion 1a of the boom 1 is in a state in which the upper portion of a normal boom is removed. A pile leader 2 is rotatably attached to the boom 1 at the boom tip 1a via a shaft 1b.

A spotter 3 composed of a hydraulic device or the like is connected to a main body of the swing crane K at a predetermined position of the pile leader 2, in this example, from the tip 1a of the boom 1 to a lower portion in FIG. 1A. Adjust the tilt of reader 2. The pile leader 2 is provided with a rail 2a, and the pile 5 is held by a holding device 5a capable of sliding on the rail 2a so that the pile 5 can slide along the pile leader 2.

The holding device 5a is connected to a wire 6, and the wire 6 is connected to a hoisting winch (not shown) via a guide roller 2b.

The pile 5 of this example is a hollow cylinder, and a hydraulic hammer 4 is provided at the upper end of the pile 5 and a connecting portion 5b is provided at the tip end side.
(See FIG. 1B) is formed, and an atmospheric diving chamber, an underwater camera (not shown), etc. are attached to the front side of the tip portion 5b. Then, the connecting portion 5b has a first
A hook 24 is provided as shown in FIG.

The hook 24 of the present example includes a holding shaft 23, a support rod 22 fixed to the holding shaft 23, and an engaging portion 21 held by the holding shaft 23 and sliding. That is, at one end of the holding shaft 23, a connecting portion 23a for connecting to the connecting portion 5b of the pile 5 is provided.
Is provided, and the engaging portion 21 is formed at the other end.
In addition, downward around the holding shaft 23 (in FIG. 1B).
In addition, a predetermined number (four in this example) of support rods 22 are formed in an inverted V shape with the holding shaft 23 as the apex.

The engaging portion 21 has a hook shape, and a locking member 21a is formed in the hook shape. The engaging portion 21 is the holding shaft 2
The extension line 3 is arranged so that it can be slidably housed in the holding shaft 23. This sliding is performed by a hydraulic device (not shown) provided in the holding shaft 23, and the tip of the engaging portion 21 is configured to slide larger than the end of the supporting rod 22. There is.

In this example, the atmospheric diving chamber 27 is used instead of the underwater camera, but an underwater camera may be used. Further, in the work of arranging the concrete blocks by the device of this example, the engaging portions 21
The thing which attached the hanging metal fitting 26 which engages with is used.

As described above, according to this example, the hook 24 is attached to the tip of the pile 5, and the hanging metal member 26 attached to the concrete block 25 at the engaging portion 21 of the hook 24 is hooked to the hooking member 21a to secure the hanging metal fitting 26. When the hydraulic device is driven to move the engaging portion 21 to the holding shaft 23 side after the falling off is prevented, the concrete block 25 and the support rod 22 come into contact with each other to hold the concrete block 25.

Then, as shown in FIG. 1A, the boom 1 and the spotter 3 can be operated to install the concrete block 25 at the masonry position on the slope of the mound at a predetermined position. When the masonry on the slope is not prepared in advance to a predetermined flatness, the hydraulic hammer 4 is set on the upper end of the pile 5, and the hydraulic energy is set to the driving energy required for the confining pressure, and the concrete block 25 is confined. It is also possible to install it at a predetermined place after pressing it as a deck.

During these operations, the underwater camera 12
Therefore, the work can be seen from the monitor onboard the ship, or the construction supervisor can enter the atmospheric pressure diving chamber 27 and actually work while watching the site. Although the hydraulic device is used as the drive device in the above-described embodiment, the wire of the hoisting winch of the crane may be used. Further, the concrete block 25 may be cut out of rock and is not limited.

As described above, in the above-described embodiment, the existing swing crane ship is used to carry out the pressure work and the installation of the concrete block 25 with high positional accuracy even at a water depth of 20 to 25 m and under strong tide. You can

[Effects of the Invention] Since the present invention is configured as described above, the existing swing type crane can be used to safely and efficiently maintain high-precision pressure work and concrete blocks even in deep water and in strong tides. Can be installed. Therefore, the work of the diver is unnecessary, there is no fear of diving disease, etc., and since it is not a dive work, there is no time limit and the work efficiency is increased.
In terms of work accuracy, high-precision work can be performed without the influence of tidal currents.

[Brief description of drawings]

1A and 1B show an embodiment of the present invention,
FIG. 1A is an explanatory view showing a state at the time of pressure work and installation of a concrete block, and FIG. 1B is an explanatory view of connection between a block and a hook. 1 ... Boom, 2 ... Pile leader, 5 ... Pile, 6 ... Wire.

Claims (1)

[Scope of utility model registration request] 1. A swing crane arranged on a work boat, a boom provided on the crane, a pile leader attached to the boom, and a pile slidably held by the pile leader. In the seabed producing apparatus, a connecting part is formed at the tip of the pile, and a holding shaft, a support rod fixed to the holding shaft, and a holding shaft that slides are held on the holding shaft. An undersea formation apparatus, wherein a hook composed of an engaging portion and the hook is connected.