JPS5845196Y2 - Clamp type spud holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clamp type spud holder for a cutter suction dredger.

The spuds of this type of dredger are lifted and lowered by holding the spuds alternately between a spud holder fixed to the hull and a spud holder movable up and down provided on the ship.

Conventionally, spud holders and spuds are attached and detached by the operator fitting and removing spud pins into pin holes provided at regular intervals in the longitudinal direction of the spud on the machine side.
This work is dangerous and inefficient.

The present invention aims to eliminate the danger and inefficiency of the above-mentioned spud lifting work by providing a clamp-type spud holder that can grasp and operate the spud by remote control, and maintains the working position of the dredger. A clamp-type spunt boulder is attached to and detached from a spud to move the spud up and down, and several rigid ring pieces whose inner periphery is lined with an elastic material are mutually axially connected except for a pair of opposing ends. The present invention is also characterized by comprising a holder main body in which the opposing ends of the rings are axially connected to each other via a fluid pressure cylinder so that they can be tightened and opened, and an elevating device that raises and lowers the holder main body.

In the present invention, the spud holder grips and holds or releases the spud by tightening and opening by the telescopic drive of the hydraulic cylinder.

The hydraulic cylinder can be controlled and unloaded from the dredger's control room, eliminating the need for dangerous work on the spud machine side.

In addition, since the spud holder consists of several ring pieces that are connected together by a shaft, the urethane rubber lining surface of the elastic body lined on the inner circumference of each ring piece is evenly pressed against the spud by tightening by a fluid pressure cylinder. , the spud can be reliably gripped by a strong frictional force, and the spud can be surely released very quickly by being pushed and spread by a fluid pressure cylinder, which has the effect of speeding up the work of lifting and unloading the spud.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the figure, 1 represents one ring beam formed by five rigid ring pieces 13 to 1e, and 2 represents one end of the ring pieces 1a=1e facing each other. 3 is a urethane rubber lining provided on the inner peripheral surface of each ring piece; 4 is a shaft connecting the ends of each ring piece;
1 is a hydraulic cylinder connected to the opposite ends of the ring pieces la and le by shafts 5 and 6 to close and open the ring beam 1, I is a pressure fluid supply port of the cylinder 4, and 8 is the ring beam 1 9 is a pair of hoisting cables connected to the eye plates 8, 8, and 10 is a spud located within the ring beam 1.

The shaft 2 rotatably connects the ring pieces to each other, and the shafts 5 and 6 rotatably connect the head of the cylinder 40 and the rod tip of the cylinder to the opposing ends of the cylinder pieces 1a and 1e, respectively. There is.

The ring piece 1, the connecting shaft 2, the urethane rubber lining (pushing body) 3 provided on the inner peripheral surface, the fluid pressure cylinder 4, and the shafts 5 and 6 constitute a holder body, and the holder body consists of an eye plate 8. , the elevating device consisting of the hoisting cable 9 moves up and down around the spud 100, either together with the spud 10 while gripping the spud 10, or with the spud 10 separated.

Although the figure shows this spud holder as a movable type that is raised and lowered by a cable 9, the holder body may be raised and lowered by another hydraulic cylinder provided at a fixed position on the deck.

In addition to the above-described device, the control operation of the hydraulic cylinder 4 and the control operation of the not-shown sounding device for the hoisting cables 9, 9 can be remotely controlled from a location away from the spud 10, such as in the driver's cab.

Now, when the fluid pressure cylinder 4 is linearly moved, the ring piece 1 a
, 1e are tightened via the shafts 5 and 6, and the other ring pieces 1b to 1d follow the tightening via the shaft 2, so that each of the ring pieces 18 to 1e is equally spaced on the inner periphery. The urethane rubber lining surface of the spud is pressed against the outer peripheral surface of the spud 10, and the spud is securely gripped and held by strong frictional force.
In this state, the spud is raised or lowered by hoisting or lowering the hoisting cables 9, 90.

When the spud is similarly gripped with another fixed spud holder and the fluid pressure cylinder of the spud holder is driven to extend, the gaps between the opposing ring pieces 18 to 1e are pushed out, and the other ring pieces 1b to 1d are driven via the shaft 2. When the hoisting cable a is raised and lowered in this state, only the spot holder is raised and lowered and moved to the initial position, and the same operation is performed again to remove the spud. Grabbing and raising and lowering are repeated.

According to the above-mentioned device, input work at the spud site is no longer required to operate the spud holder when hoisting spuds, and the spud holder can be opened and closed quickly by mechanical drive using a fluid pressure cylinder. The connected ring pieces ensure a strong grip on the spud and complete release, making it possible to carry out frequent raising and lowering of the spud during dredging work very efficiently.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the spud holder according to the present invention, FIG. 2 is a front view of FIG. 1, and FIG. FIG. 1...Ring piece, ring beam consisting of 1a to 1e, 2, 5, 6...Connection shaft, 3...
Urethane rubber lining on the inner circumference of each ring piece, 4...
...Fluid pressure cylinder, 8...Eye plate, 9
...Hoisting cable, 10...Spud.

Claims (1)

[Scope of utility model registration request] A set of opposing ends consists of a spud for holding the working position of the dredger and a clamp-type spud holder for moving the spud up and down when attached and detached, and several rigid ring pieces lined with an elastic material on the inner periphery. a holder main body which is axially connected to each other except for the parts thereof, and in which one end of the opposing rings is axially connected to each other via a fluid pressure cylinder so as to be able to be tightened and opened;
A clamp type spud holder comprising a lifting device for lifting and lowering the holder body.