JPS628886A - Spud driving height adjustment device - Google Patents

Abstract

PURPOSE:To make it possible to optionally adjust the driving height of racks, by allowing locking rods disposed in upper and lower beds to alternately engage with racks which are laid in the longitudinal direction of the spud so that the racks are alternately locked, and further, by making the upper and lower beds to approach together and separate from each other to elevate the racks in a measuring method-like manner. CONSTITUTION:When a spud 20 is elevated, a locking rod 31 of an upper bed 30 on a thrust bearing 24 is engaged with a rack 21 on a spud 20, and after a locking rod 25 of a lower bed 25 is released from a rack 21 on the spud 20, the upper bed 30 is elevated by means of a vertically moving device 33. Further, when the spud 20 is elevated further more, after the locking rod 26 of the lower bed 25 being engaged with the rack 21 on the spud, the locking rod 31 of the upper bed 30 is released from the rack to allow the upper bed 30 to approach the lower bed 25 to that the first mentioned operation is repeated. With the repetition of the above-mentioned steps, the spud is adjusted to an optional position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spud driving height adjusting device for a work vessel such as a dredger.

[Conventional technology]

A pump-type dredger drives a spud into the seabed and performs dredging work by reciprocating within a certain angle around the driven spud as the center of rotation. Therefore, when driving the spud, it is necessary to freely adjust the spud penetration I depending on the soil quality of the dredged area. The amount of spud penetration is adjusted by adjusting the height position of the spud from where the spud is driven by its free fall.

For this reason, it is necessary to hoist the spud 9 before driving the spud, but conventional spud driving height adjustment devices
As shown in Fig. 5, it was based on a winch system. In these figures, (1) is the hull, and (2) is a spud, which is raised and lowered by passing through spud keepers (3) and (4) provided above and below at the stern. (5) is a winch for lifting the spud (2), and its winch wire (6) is connected to the upper part of the spud (2) via a sheave (71 (81) in sequence).

The sheave (7) is installed on the gantry (
9), and the sheave (8) is pivotally supported on the side surface of a connecting member slidably fitted to the spud (2). The connecting member α and the spud (2) are connected through the pin (11). Therefore, the snout (2) has a pin (
11) to change the insertion position (bottle insertion hole (not shown))
The required number of columns are provided. (12) is a spud lock device, which is provided for safety when adjusting the spud driving height.

In the conventional example shown in Fig. 4, the driving height position of the spud (2) is determined by lifting the spud (2) with a winch (5), locking the spud (2) with a spud lock device (12), and then locking the spud (2) with the connecting member α. [and pin (1) of spud (2)
By changing the push-in position in 1), it is adjusted to the shaku-tori^ method.

Next, in the conventional example shown in FIG. 5, one end of the lifting wire (13) is connected to the hull (1), and the other end is formed into a loop shape and is directly wound around the spud (2). The middle part of the movable sheave (14) is wound around the movable sheave (14).
4) is raised by the rod (16) of the hydraulic cylinder (15) to lift the spud (2). In this conventional example, the height position of the loop at the other end of the lifting wire (13) can be adjusted by shifting the position relative to the spud (2) in the same way as in the case of Fig. 4. .

In each of the conventional examples described above, when driving the spud (2) into the seabed, the winch wire (6) and the lifting wire (13) may be relaxed.

[Problem that the invention seeks to solve]

In each of the above conventional examples, in order to adjust the spud driving height, it is necessary to manually change the position of the spud (2) and the connecting member QQI in the bottle, and to change the position of the winding of the lifting wire (13). First, there were problems in that the work was inefficient and highly dangerous. Further, in the example shown in FIG. 4, it is not possible to provide more than 9 bottle insertion holes in the spud due to its strength, and therefore there is a problem in that the adjustment range is limited to a relatively small size. Next, in the example shown in FIG. 5, although the adjustment range can be widened, there is a large risk that the spud will slip off.

[Means for solving problems]

Book 5I! The spud driving height adjustment device ζ by cutting is provided with a rack on the side surface of the spud in which a locking rod engages in the longitudinal direction, and a pair of upper and lower base plates with the locking rod movable back and forth are provided surrounding the spud. In addition, the upper and lower base plates are connected by a vertical movement device so as to be close to and separated from each other, and the lower base plate is supported on a thrust bearing on a spud keeper.

[For production]

In the present invention, when raising the spud, the locking rod of the upper platform on the i-thrust bearing is engaged with the rack of the spud, the locking rod of the lower platform is disengaged from the rack of the spud, and then the upper platform This is to lift the material onto a vertical movement device. Furthermore, when raising the spud upwards, the lower base plate's locking rod is engaged with the spud rack, and then the upper base plate's locking rod is disengaged from the rack. Just bring it closer to the lower platform side and repeat the same operation as the first one. The spud can be adjusted to any desired height by repeating the same operation.

〔Example〕

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

FIG. 1 is a side view of this embodiment, FIG. 2 is an enlarged sectional view taken along line 1--2 in FIG. 1, and FIG. 3 is a sectional view taken along line 2--II in FIG. In these figures, Figures 4 and 5rI
Components that are the same as those shown in IJ are given the same reference numerals and explanations will be omitted. (20) has racks (
21) is a spud provided with. It is appropriate to provide a pair of racks (21) symmetrically. Also rack (21)
It is preferable to carve inside the Flt (22) so as not to protrude beyond the outer periphery of the spud, as shown in FIG. The rack (21) may be one in which recesses are provided at predetermined intervals in the longitudinal direction of the spud (20).

(23) is a support frame for mounting the thrust bearing (24), which is mounted on the hull (1), but can also be mounted directly on the upper spud keeper (3). (25) is a lower platform supported on a thrust bearing (24), and on top of it a cylinder device (27) is arranged so that the tips of locking rods (26) on both sides engage. has been done. The tip of the locking rod (26) is attached to the lower base plate (2
It enters and exits through the hole (29) of the body (28) provided in 5). (30) is an upper platform, and a cylinder device (32) having a locking rod (31) similar to that of the lower platform (25) is disposed on the lower surface thereof. (33) is the upper and lower o
This is a vertical movement device that connects the panels (30) and (25), and is composed of a cylinder device. (34) is the upper platform (30)
It is a guide rod to guide you. In addition, the base plate (25) (3
0) is a half-divided type in order to facilitate attachment and detachment to the spud (20).The operation of this embodiment configured as described above will be described.

When lifting the spud (20), in other words when raising it to a required height, the locking rod (26) on the lower platform (25) is projected by the cylinder device (27), and the spud rack (21) Engage the spud (
20)! Tsuku. At this time, the locking rod (31) of the upper platform (30) is moved back by its cylinder group M (32) and separated from the spud rack (21). In this state, the upper platform (30) is placed above the vertical movement device (33).
The lower level! (25) side, and then protrude the locking rod (31) in the same way as above to make the spud rack (
21). Next, attach the locking rod (
26) from the spud rack (21) in the opposite manner to the above, and then tighten the vertical movement device (33) to raise the spud (20). From then on, repeat the same operation as above. The spud can be adjusted to the desired height by repeating the procedure 9 times as required.

After adjusting the height of the spud, when driving the spud, the upper locking rod (31) is removed from the rack (21), and the spud (20) falls freely and is driven into the seabed. And the spuds driven in this way (20)
Even if the hull (1) rotates for dredging work with the rotation center at
3) and the lower platform (25), so there is no problem.

〔Effect of the invention〕

As described above, according to the present invention, the locking rods disposed on the upper and lower base plates alternately engage the racks provided in the longitudinal direction of the spud, thereby locking the racks alternately, and further locking the racks on the upper and lower base plates. This is because the rack is raised in a scale-wise manner by moving the panels close together and away from each other using a vertical movement device.
The driving height of the rack can be adjusted as desired.

Furthermore, there is no fear that the strength of the spud will decrease due to the provision of a rack, making it efficient and safe.

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment of the present invention, and Fig. 2 is a side view of the embodiment of the present invention.
FIG. 3 is an enlarged sectional view taken along the line I--I in FIG. 2, and FIGS. 4rjA and 5 are side views of the conventional example. (1): Hull, (21 (20): Spud, (21)
: Rack, (241 nislast bearing, (25): Lower base plate, (2B): Locking rod, (27): Cylinder device, (3Q): Upper base plate, (31) 2 locking rods, (3
2): Cylinder device, (33): Vertical movement device. Agent: Patent Attorney Masaru Sato (Figure 1, Figure 2). Figure 3 Figure 4

Claims (1)

[Claims] A spud is inserted through a spud keeper attached to a ship's hull to allow the spud to fall freely from a required height and is driven into the seabed, wherein a longitudinal rack is provided on the side of the spud,
A locking rod that engages with the rack is arranged movably on the upper and lower base plates, and the two base plates are connected by a vertical movement device so as to approach and separate from each other around the spud, and the lower base plate is A spud driving height adjusting device, characterized in that it is supported on a thrust bearing on the spud keeper.