JPH0455096Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is designed to prevent the caisson from being destroyed by the wire when the caisson is towed by hooking the caisson with a wire for towing the caisson. This invention relates to a protective member for towing a caisson that is attached to a vertical corner of a caisson.

(Conventional technology) In recent years, as the development of coastlines has progressed, quays and breakwaters with large caissons have been constructed in places with poor sea conditions in terms of waves and water depth, or in deep sea areas with a depth of 50 m or more where offshore artificial islands are constructed. There is a growing demand for the construction of

This large caisson is built at a factory near the coast, and after being lowered to the sea and floating on the sea surface, a wire is hung around the caisson and the caisson is constructed in a place with poor sea conditions in terms of waves and water depth, or where the caisson is constructed. It will take two or three days to be towed to a shelter where there are no facilities.

Therefore, the wire needs to be spanned at an ideal position for efficient towing, and to prevent damage to the caisson, protective members are attached to the vertical square portions.

(Problem to be solved by the invention) However, during long towing of the caisson, the wire may come off the protective member and damage the caisson, or the wire may shift from the ideal mounting position for efficient towing. There were problems such as the inability to tow the caissons efficiently.

The present invention was devised in view of the above-mentioned problems, and its purpose is to install a protective member in an ideal position for efficient towing of a caisson, and to provide a wire attached to the protective member. To provide a protective member for towing a caisson which prevents the caisson from coming off.

(Means for Solving the Problems) The means of the present invention for solving the above problems is that the caisson towing protection member is fitted with a fitting recess that is fitted into a vertical corner of the caisson. A semicircular abutting body with an elastic body attached to the outer peripheral surface is provided on the entire length of the back surface of the plywood so that the curved part protrudes in the opposite direction to the fitting recess, and an outer periphery is provided on both the upper and lower surfaces of the corresponding abutting body. A fixing plate is provided that protrudes by an appropriate width from the outer surface of the elastic body, and a retaining rod is removably installed between the outer peripheries of both the upper and lower fixing plates, so that the tow cable is latched between the relevant body and the retaining rod. The invention is characterized in that it has a latching part.

(Function) According to the above configuration, the fitting recesses are fitted into the square parts in the longitudinal direction of the caisson, so that the protection members are respectively attached, and the tow cable is hung on the hooking parts of the protection members. The caisson is fastened and stretched around the entire circumference of the caisson, and the caisson is towed by the towing cable.

Since the tow cable is latched and fixed to the hook part by the retaining rod, it will not come off from the caisson towing protection member during towing.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 shows the caisson towing protection member A of the present invention.
(hereinafter simply referred to as a protection member), and the protection member A includes a fitting plate 1, a contact body 2, a fixing plate 3, a holding rod 4,
It is constituted by a hook part 5. The protective member A is attached by fitting the fitting plate 1 into the vertical square part m of the caisson M.
The tow rope 6 is stretched around these hooks 5, and the caisson M is towed.

In the fitting plate 1, a metal plate 1a is bent at right angles to form a fitting recess 1b to be fitted into the square part m of the caisson M, and a contact body 2 is provided on the entire length of the corner 1c on the back side. It is being

The contact body 2 is formed into a semicircular column made of metal or hard synthetic resin, and is fixed to the back surface of the mating plate by welding or adhesive, with the curved side protruding in the opposite direction to the mating recess 1b. has been done.

Further, the outer circumferential surface of the contact body 2 is covered with an elastic body 2a, and fixing plates 3 are fixed to both the upper and lower surfaces.

Note that the corresponding contact body 2 is not limited to the semicircular column, but can also be formed as a cylinder made of metal or hard synthetic resin. It can also be formed integrally with a column or cylinder.

The elastic body 2a is made of rubber and has both upper and lower parts protruding in a curved manner, thereby forming a concave insertion groove 2 in the center.
b is formed and adhered to the contact body 2 via an adhesive or the like.

The fixing plate 3 has a substantially semicircular shape and is fixed to both upper and lower surfaces of the abutting body 2, and both ends thereof are fixed to the fitting plate 1 and reinforced by a reinforcing plate 3d.
Further, the outer circumferential portion 3b of the abutting body 2 is protruded by an appropriate width from the outer surface of the elastic body 2a, and is vertically opposed to the outer circumferential portion 3b. 4 has been inserted.

The holding rod 4 is inserted across the upper and lower through holes 3c at positions sandwiching the rear corner 1c of the fitting plate 1, and is bolted to the lower fixing plate 3, thereby creating a connection between the holding rod 4 and the contact body 2. It is formed in the hook part 5 for hooking the tow rope 6. The holding rod 4 may have any shape, thickness, etc. as long as it can form a hooking portion 5 to which the towline 6 can be hooked. Furthermore, since the hooking portion 5 is formed between the fixing plates 3 on both the upper and lower surfaces of the contact body 2, the tow rope 6 hooked to the hooking portion 5 can move between the fixing plates 3.

As shown in FIGS. 4 and 5, the tow rope 6 is formed by bundling a large number of polyester core threads 6a and covering them with an outer cloth 6b, and is flexible and flexible. Are better.

Therefore, the tow rope 6 can be easily laid over the caisson M and the protection member A attached to the vertical square portion m of the caisson M.

Next, a method of attaching the protection member A of the present invention to the caisson M will be explained.

First, the protective member A is attached by a crane to the vertical square part m of the caisson M floating on the sea surface with the holding rod 4 removed from the fixing plate 3.

This installation involves fitting the fitting plate 1 into the square part m, and hooking the wire n connected to the other through hole 3c of the fixed plate 3 to the hook piece 7a protruding from the lid 7 on the top surface of the caisson. fixed by
The attachment position is adjusted by the wire n.

In addition, this mounting position is the most efficient towing position when towing the caisson M, that is, the position where the towing vessel can easily and quickly tow the caisson M, taking into account all the factors necessary for towing such as the resistance of seawater against the caisson. be.

Next, the crane carries the towing cable 6 to the top surface of the caisson M and spreads it out in a square ring shape that matches the shape of the caisson M.
Concatenate.

The auxiliary rope 8 is latched onto the upper surface of the caisson to attach and hold the towline 6 in a predetermined position.

Then, the tow cable 6 is manually dropped onto the outer periphery of the caisson M, and while adjusting the height with the auxiliary rope 8, it is inserted into the hook part 5 of the protective member A of the square part m, and the through hole of the fixing plate 3 is The attachment is completed by inserting and fixing the retaining rod 4 into 3c.

Therefore, the caisson M can be towed by the towing cable 6.

In addition, the attachment of the tow rope 6 to the caisson M is not limited to the above-mentioned method; the tow rope 6 is hooked in advance to the hooks 5 of the protective member A arranged at the four corners of the upper surface of the caisson to form a square annular shape. The protective member A is dropped onto the outer periphery of the caisson M, and the wire n and the auxiliary rope 8 are
It is installed while adjusting the installation position.

By attaching using this method, the attaching work is easy, and the number of people involved can be reduced, so that it is possible to improve work efficiency and economical efficiency.

(Effects of the invention) The present invention has the following effects by having the above configuration.

Fixed plates are provided on both upper and lower surfaces of the abutting body provided on the entire length of the back surface of the mating plate, and the outer circumference protrudes from the outer surface of the elastic body by an appropriate width, and a retaining rod is removably provided between the outer circumferential parts, By forming a latching part for latching the tow rope between the caisson and the retaining rod, the caisson can be hung from the protective member during towing because the caisson can be latched by the caisson. can be prevented from coming off.

Therefore, the tow cable can be fixed at all times in an ideal position for efficient towing of the caisson, so that efficient towing can be carried out and damage to the square parts of the caisson can be prevented. I can do it.

Since the tow rope can be hooked to the hook part of the protective member, the caisson can be hung with the protective member attached to the tow rope in advance, simplifying and shortening the installation work. and can be freely attached to any position on the square part of the caisson.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the caisson towing protection member of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a reduced perspective view showing the state of use, Fig. 4 is a plan view of the towing cable, and Fig. 5 is 5 is a sectional view taken along the line - in FIG. 4. FIG. A... Caisson towing protection member, 1... Fitting plate, 1b... Fitting recess, 2... Contact body, 3... Fixed plate, 4... Holding rod, 5... Latching part, 6... ...towing line.

Claims (1)

[Scope of utility model registration request] A semicircular abutting body with an elastic body attached to the outer circumferential surface is attached to the entire upper and lower rear surface of the mating plate, which has a mating recess that fits into the vertical corner of the caisson, and the curved part is in the opposite direction to the mating recess. At the same time, a fixing plate is provided on both the upper and lower surfaces of the relevant contact body, the outer circumference of which protrudes by an appropriate width from the outer surface of the elastic body, and a retaining rod is removably installed between the outer circumferential parts of both the upper and lower fixing plates. A protective member for towing a caisson, characterized in that a latching portion for latching a towing cable is formed between the relevant contact member and the holding rod.