JPS5835721Y2 - "Ten" pressure machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pressure marker used for leveling underwater rubble to create a foundation surface for a breakwater or the like.

Underwater work, that is, the work of laying rubble on the water bottom and leveling it horizontally, has shifted from manual work done underwater by divers to work using a treadmill that uses a weight to pound the rubble on the bottom.

Conventional yoke pressure machines have a weight attached to the bottom end of a long frame column that extends from the water bottom to the water surface, and is suspended by a crane installed on a ship or on land, and repeatedly dropped onto rubble laid on the water bottom to create a rubble foundation. It is used to level the surface.

However, according to the conventional attached machine, when the weight is raised from the bottom of the water and dropped onto the rubble, the falling speed of the weight is significantly reduced due to the resistance of the water, and the force with which it hits the rubble is reduced. Therefore, it had the disadvantage of poor efficiency.

In addition, there was a risk that the weight would tilt due to the flow of water and not fall to the desired location.

The present invention aims to eliminate the above-mentioned drawbacks and provide an auxiliary machine that can use the weight efficiently and perform work efficiently.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing how the marking machine is used, where the symbol A is the marking machine, and B is the crane ship.

The affiliated machine A is vertically suspended by a rope 1 wound around a crane ship B, and the lower surface of the tread pressure machine A is in contact with the water bottom.

FIG. 2 is a longitudinal sectional view of the yoke pressure machine A.

This affiliated machine A consists of a guide frame 2 and a pile hammer 3, and the guide frame 2 stands on four cross-sectional guide columns 4 extending below the water surface, and also supports the adjacent guide columns 4. They are formed into a prismatic shape with a regular quadrilateral cross section through reinforcing members 5.

The guide column 4 has an L-shaped sliding plate 6 along its inside that can be slid up to a stopper 4a provided on the guide column 4, and a main body 8 of the pile hammer 3 is attached to the sliding plate 6 via a support plate 7. hold.

The pile hammer 3 includes a bracket 9 provided at the upper end of a cylindrical main body 8, and a plurality of fixed pulleys 1 mounted on a protrusion 9a at the center of the bracket 9.
0...... is pivotally supported.

A hydraulic cylinder 11 is fixed onto the bracket 9.

The hydraulic cylinder 11 is formed around a cylinder, and is provided with a movable support 12 integrally formed with a piston that slides inside the cylinder.

Further, the hydraulic cylinder 11 is provided with two hydraulic connecting hands 13.14 so as to sandwich the piston of the movable support 12, and an oil feed pipe 15.16 is connected to these to connect the guide frame 12.
Although not shown, oil feed pipes 15 and 16 are connected to a hydraulic machine separately provided on the crane ship B.

On the other hand, the movable support body 12 supports a plurality of pulleys 17 on a support portion 12 a that projects in the direction of the central axis of the hydraulic cylinder 11 .

This pulley 17 moves up and down together with the movable support 12, so it functions as a movable pulley.

Note that reference numeral 18 is a head cover provided to prevent water from entering, and the mounting portion has a waterproof structure.

A weight 19 is provided inside the main body 8 so as to be movable up and down.

This weight 19 is a weight also called a ram, and has a cylindrical shape with an outer diameter slightly smaller than the inner diameter of the main body 8.

The upper end of the weight 19 fixes both ends of a wire rope 20 which is alternately passed between fixed pulleys 10 and pulleys 17.

The lower end of the weight 19 has a truncated conical shape, and when it falls onto the anvil 21 provided at the lower end of the main body 8, it fits into the recess of the anvil 21.

The anvil 21 has a central convex portion 21 a inserted into the lower end of the main body 8 to prevent it from being removed, and each corner of the anvil 21 is fitted into the guide frame 2 so that it can slide, and its lower surface is placed at the bottom of the water. It is brought into contact with the rubble 22 laid down.

In the above embodiment, only one pressure marker A is used, but a plurality of pressure markers A may be used.

In other words, a plurality of yoke pressure machines are arranged side by side within a large frame, and a height level mark is attached to the part of each yoke pressure machine that protrudes from the water surface, and hydraulic machines are installed at the four corners of the large frame to make it vertical. Set up.

The hydraulic machine is an adjustment machine that holds the large frame vertically when it is erected on the uneven water bottom by discarding rubble and tilted.

Each of the affiliated machines is operated at the same time to level the water bottom, but the height of the yoke pressure machine also differs because the level of the rubble foundation varies depending on the condition of the water bottom.

Therefore, the individual pressure markers are operated to achieve equilibrium so that the heights indicated by the pressure markers match.

Note that the rut pressure machine is not limited to being suspended by a crane ship, and it goes without saying that a crane may be installed on an existing caisson C as shown in FIG. 1 to suspend the rut pressure machine.

The yoke pressure machine A as described above is lifted by a crane and transported to the place where it belongs, and the yoke pressure machine A is made vertical and lowered below the water surface.

The pile hammer 3 is slid downward to bring the lower surface of the anvil 21 into contact with the rubble 22.

Next, when the support body 12 is raised by applying pressure from the connector 13 by operating a hydraulic machine on the crane ship B, the weight 19 is also raised at the same time.

At this time, since a plurality of pulleys 17 are installed, the support 1
Although the weight 19 can be raised to a high position even if the lifting distance of the cylinder 2 is short, the capacity of the hydraulic cylinder must be increased.

After that, when lowering the support 12 by applying pressure from the connector 14 side, the wire rope 20 unwinds quickly, so even if it falls naturally due to the weight of the weight 19, the weight 19 will reduce the falling speed. It falls onto the anvil 21 with a strong impact force without causing any damage.

Therefore, most of the impact force on the anvil 21 is transmitted to the rubble 22, and the rubble 22 is driven into the bottom surface of the water.

As is clear from the above explanation, according to the present invention, the falling weight is not subjected to water resistance, so the efficiency of utilizing the falling force is high, and it is sufficient to use a lighter weight than in the past. .

Furthermore, the operation is simple, the work can be done quickly, and a uniform rubble foundation surface can be obtained.

In addition, by enclosing multiple attached machines in a large frame and operating them simultaneously, you can level the work over a wide area at once. A more even rubble foundation surface can be obtained.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the condition in which the marking device of the present invention is suspended from a crane ship, and FIG. 2 is a longitudinal sectional view of the marking device of the present invention. 2... Guide frame, 3... Pile hammer, 7... Sliding plate, 8... Main body, 1
9... Weight, 21... Anvil.

Claims (1)

[Scope of utility model registration request] A guide frame that holds the standing leg under the water surface, a sliding plate that slides along the guide frame, and a weight that holds the main body on the sliding plate and moves up and down within the main body. An attached machine consisting of a pile hammer installed at the lower end of the main body and landing on an anvil that touches the bottom of the water.