JPH07109102B2 - Dredging device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dredging device for sucking up mud or the like accumulated on the bottom of a water, and more particularly to an optimum dredging device to be installed on a ship.

[0002]

2. Description of the Related Art A dredging device for collecting gravel, sludge and the like accumulated on the bottom of a canal or the sea is, for example, as shown in FIG. 9, a power shovel (2) and a storage tank (3) on a work boat (1). , A vacuum generator (4), a compressor, etc. are installed, and a vacuum cup (5) is swingably attached to the tip of a working arm (6) of the power shovel (2). The power shovel (2) has a second boom at the tip of the first boom (7).
The boom (10) is swingably attached to the second boom (1
The work arm (6) is slidably mounted on (0). The power shovel (2) is pivotally supported by a base (12) installed on the deck (11) of the work boat (1).

The above-mentioned dredging device is provided with a vacuum generator (4) and a vacuum generator (4) for switching the suction / discharge of the storage tank (3) from the control room (14) provided on the generator (13) of the work boat (1). The operation of the compressor is remotely operated, and the power shovel (2) is operated from the operation room (15) of the power shovel (2) to perform the work. When collecting gravel or sludge, the first boom (7) and the second boom (10) are extended, the work arm (6) is extended from the second boom (10), and the vacuum cup (5) is attached to the bottom of the water. . In this state, the vacuum generator (4) is operated to suck the gravel or sludge and store it in the storage tank (3).

When the storage tank (3) is full, the suction is stopped, the work boat (1) is moved to a predetermined place, the compressor is operated, and compressed air is sent to the storage tank (3), Gravel or sludge is discharged from 3).

The movement during suction is performed by turning the power shovel (2) or swinging the second boom (10). When not working, the work arm (6) is contracted, the second boom (10) is folded below the first boom (7), and the vacuum cup (5) is retracted upward.

[0006]

In the above dredging device, the operation of the power shovel (2) is performed by the power shovel (2), the suction / discharge of the storage tank (3) is switched, and the vacuum generator (4) and the compressor are switched. Since the operation is performed from the control room (14), a plurality of workers are required.

In addition, since the power shovel (2) is used to operate the vacuum cup (5), the first boom (7) and the second boom (10) are swung during the work, and the work arm is also operated. (6) had to be expanded and contracted, and the device was large and complicated. Moreover, when the water is deep, the first boom (7), the second boom (10), and the working arm (6)
It has to be lengthened and it becomes very large.

Also, when the vacuum cup (5) is stored,
The work arm (6) is retracted along the second boom (10), the second boom (10) is folded below the first boom (7), and the vacuum cup (below the first boom (7) is Since 5) is stored, a large storage space is required.

The present invention is intended to provide a dredging device having a simple mechanism and capable of compactly storing a vacuum cup or the like.

[0010]

The present invention comprises a base,
A dome-shaped swivel mounted on the base so as to be swingable, a telescopic boom swingably mounted on the swivel, a guide frame swingably mounted on the tip of the boom, and a penetrating through the guide frame And a slidably supported working arm, a vacuum cup swingably mounted at the tip of the working arm, a boom swing boom cylinder mounted between the swivel base and the boom, and the swivel base. An arm cylinder for swinging a working arm mounted between the guide frame and the guide frame, a rack formed along the longitudinal direction on the peripheral surface of the working arm, and a pinion mounted on the guide frame.
A turning operation mechanism including an arm lifting motor for rotating the pinion is provided on the work boat.

[0011]

The above-mentioned dredging device makes the boom almost horizontal,
With the working arm in a substantially vertical state, the working arm is lowered, and the vacuum cup attached to the lower end of the working arm is attached to the bottom of the water to suck gravel or sludge. The movement of the vacuum cup during suction is performed by expanding and contracting the boom or swinging the work arm.

When storing the vacuum cup, the working arm is raised to the upper end and the boom is erected vertically.
Store the work arm on the work boat. Therefore, even if the work arm is very long, it can be stored in an empty space on the work boat, resulting in compactness. In addition, the mechanism is simple and the control is simple.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. However, the same components as those of the conventional technique are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 1, the dredging device is a swivel for operating a storage tank (3), a vacuum generator (4), a compressor (not shown), and a vacuum cup (5) on a work boat (1). An operation mechanism (20) and the like are provided.

The storage tank (3) can be switched between suction and discharge so that it can be stored and discharged. A suction force acts from the vacuum generator (4) during storage, and compressed air is supplied from the compressor during discharge. The suction / discharge switching of the storage tank (3) and the operation of the vacuum generator (4) and the compressor are remotely controlled from the control room (14) on the work boat (1).

As shown in FIGS. 1 and 2, a swivel operating mechanism (20) for operating the vacuum cup (5) has a swivel base (21) mounted on a base (12) fixed on the deck of the work boat (1). ) Is swingably mounted, the boom (22) is swingably attached to the swivel base (21), and the working arm (6) is swingably attached to the tip of the boom.

As shown in FIGS. 3 and 4, the swivel base (21) has a hemispherical dome shape and is mounted on the upper surface of the base (12) via the swivel bearing (23). The outer ring (24) of the swivel wheel bearing (23) is bolted to the swivel base (21), and the inner ring (25) is bolted to the base (12). In addition, the turning motor (26) is provided on the peripheral surface of the base (12).
The drive gear (27) attached to the output shaft of the turning motor (26) is meshed with the driven gear (30) formed on the outer peripheral surface of the outer ring (24) of the turning wheel bearing (23). By operating (26), the outer ring (24) is rotated and the swivel base (21) is swung. A part of the swivel base (21) is opened, and a column (31) is erected and fixed to the open part. The support pillars (31) are formed with three mounting flanges (32) at equal intervals on the upper end.

The boom (22) has an outer cylinder (33) and an inner cylinder (3).
4) has a telescopic structure that can be expanded and contracted. The outer cylinder (33) is, for example, as shown in FIG. 5, L-shaped pieces (35) and (35) each having an L-shape and both ends bent outward, are assembled so as to face each other, and the L-shaped connection is made at the butting portion. It has a structure in which the brackets (36) and (36) are overlapped and coupled. A liner (37) having a small frictional resistance is attached to each inner surface of the outer cylinder (33), and the liner (37) guides the inner cylinder (34) to move smoothly. And
Mounting pins (40) and (41) are respectively provided on the same side surface of the outer cylinder (33) and the inner cylinder (34) so as to project, and a boom telescopic cylinder (42) is mounted between both mounting pins (40) (41). The inner cylinder (34) is expanded and contracted by the expansion and contraction operation of the boom expansion and contraction cylinder (42).

The boom (22) is provided with two mounting flanges (43) at the rear end of the outer cylinder (33), and these mounting flanges (43) are attached to the mounting flanges (3) of the columns (31).
It is engaged with 2) and is swingably connected by a connecting pin (44). Then, the support arm (45) formed on the peripheral surface of the swivel base (21) and the outer cylinder (33) of the boom (22).
The boom cylinder (47) is mounted between the boom cylinder (47) and the second mounting pin (46) protruding from the side surface of the boom cylinder (4).
The boom (22) is swung about the connecting pin (44) as a fulcrum by the expansion and contraction operation of (7).

As shown in FIGS. 6 to 8, the working arm (6) is in the shape of a long rectangular tube, a vacuum cup (5) is swingably attached to the lower end, and the rack (50) is attached to the front side. Is formed over almost the entire length. The guide frame (51) for holding and raising and lowering the working arm (6) is shown in FIGS.
As shown in FIG. 2, a pair of first and second guide rollers (52) (53) are formed in a rectangular frame shape surrounding the working arm (6) and guide the both side surfaces of the working arm (6) to the upper and lower ends thereof. And a pair of third and fourth guide rollers (54) for guiding the front and rear surfaces
(55) are attached so that their heights are different from each other.

First and second guide rollers (52) (53)
Installs first and second support pins (56) (57) on both sides of the work arm (6) across the front and rear surfaces of the guide frame (51). ) (57) are rotatably mounted via bushes (60) and (61) respectively, and the first guide roller (52) and the second guide roller (53) support both sides of the working arm (6). is doing.

The third guide roller (54) has a guide frame (5
1) Straddle both sides of the work arm (6),
A support pin (62) is erected, and this third support pin (62)
It is mounted rotatably on the bush via a bush (63).
On the other hand, the fourth guide roller (55) is divided into left and right parts to avoid interference with the rack (50) provided on the working arm (6), and guides the divided fourth support pins (64) (64). The frame (51) is cantilever-supported on each side surface, and is rotatably attached to the inner end of the frame (51) via bushes (65) (65).

The guide frame (51) is formed by cutting off the mounting portions of the first guide roller (52) and the second guide roller (53) on both side surfaces to open it, and the third guide roller (on the front and rear surfaces). 54) and the mounting portion of the fourth guide roller (55) are cut off and opened.

Further, FIG. 8 is provided on one side surface of the guide frame (51).
As shown in FIG. 5, a lifting motor, for example, a hydraulic motor (66) is attached, a rotary shaft (70) is attached to an output shaft (67) of the hydraulic motor (66), and a pinion (72) formed on the rotary shaft (70). Is engaged with the rack (50). The other end of the rotating shaft (70) is rotatably supported by the other side surface of the guide frame (51) via a bearing (71). Therefore, when the hydraulic motor (66) rotates forward and backward,
Rotate the pinion (72) forward and backward to move the work arm (6).
Raise and lower.

The guide frame (51) is provided with a boom (22).
It is held by a bifurcated mounting arm (73) formed on the front end surface of the inner cylinder (34) and is swingably supported by support pins (74) (74). The arm cylinder (7) is provided between the connecting pin (44) mounted on the support column (31) and the connecting pin (75) protruding from the guide frame (51).
6) is mounted, the guide frame (51) is swung by the expansion and contraction operation of the arm cylinder (76), and the working arm (6) is further swung.

The above-mentioned dredging device raises the working arm (6) relative to the guide frame (51) when not working,
In addition, the arm cylinder (76) is shortened so that the boom (22) and the guide frame (51) are substantially orthogonal to each other, and the boom cylinder (47) is extended so that the boom (22) is vertically erected to guide the guide frame. (51) and working arm (6)
The vacuum cup (5) is stored on the work boat (1).

At the time of work, the boom cylinder (47) is shortened to make the boom (22) horizontal and the guide frame (5)
With the vacuum arm (1) and the working arm (6) in a vertical state, the vacuum cup (5) is placed on the water surface. Next, the hydraulic motor (66) is rotated to lower the working arm (6), attach the vacuum cup (5) to the bottom of the water, and suck the gravel or sludge. The sucked gravel or sludge is stored in the storage tank (3). In addition, the vacuum cup (5) is moved by operating the swing motor (26) during operation to swing the boom (22) or extending the boom telescopic cylinder (42) to move the working arm (6). Then, suction around the work boat (1) is performed.

When the storage tank (3) is full, the work is stopped, the boom telescopic cylinder (42) is shortened to shorten the boom (22), and the hydraulic motor (66) is rotated in the reverse direction to move the work arm ( 6) is raised, and then the boom cylinder (47) is extended to raise the boom (22), the working arm (6) is retracted and moved to a predetermined position, and the storage tank (3) is discharged from the suction. The compressed air is supplied from the compressor to the storage tank (3) to discharge the gravel or sludge in the storage tank (3).

The suction operation and discharge switching of the turning operation mechanism (20) and the storage tank (3), the operation of the vacuum generator (4), the compressor, etc. are performed by the generator (1) of the work boat (1).
3) Concentrate in the control room (14) provided above.

[0030]

According to the present invention, the working arm having the vacuum cup attached thereto is moved up and down with respect to the guide frame, and the boom is rocked to retract the guide frame and the working arm onto the work boat. It can be stored and can be stored very compactly. Also, since the working room has been eliminated from the swivel base, the swivel base has also been made smaller, and the turning operation mechanism has become extremely compact.

[Brief description of drawings]

FIG. 1 is a side view of a dredging device according to the present invention.

FIG. 2 is a plan view of a turning operation mechanism according to the present invention.

FIG. 3 is a side view of a swivel base according to the present invention.

FIG. 4 is a front view of a swivel base according to the present invention.

FIG. 5 is a sectional view of a boom according to the present invention.

FIG. 6 is a sectional view of a mounting portion of a first guide roller and a second guide roller according to the present invention.

FIG. 7 is a sectional view of a mounting portion of a third guide roller and a fourth guide roller according to the present invention.

FIG. 8 is a sectional view showing the relationship between the lifting motor and the working arm according to the present invention.

FIG. 9 is a side view of a conventional dredging device.

[Explanation of symbols]

 1 Work Boat 3 Storage Tank 4 Vacuum Generator 5 Vacuum Cup 6 Working Arm 12 Base 21 Swivel Base 22 Boom 42 Boom Telescopic Cylinder 47 Boom Cylinder 50 Rack 51 Guide Frame 66 Lifting Motor 72 Pinion

Claims (1)

[Claims] 1. A base (12), a dome-shaped swivel base (21) rotatably mounted on the base (12), and a telescopic boom (22) swingably mounted on the swivel base (21). ), A guide frame (51) swingably attached to the tip of the boom (22), and a working arm (6) slidably supported by penetrating the guide frame (51).
A vacuum cup (5) swingably mounted on the tip of the working arm (6), and a boom swing boom cylinder (47) mounted between the swivel base (21) and the boom (22). A working arm swinging arm cylinder (76) mounted between the swivel base (21) and the guide frame (51), and a rack formed along the longitudinal direction on the peripheral surface of the working arm (6). (50), a pinion (72) attached to the guide frame (51), and an arm raising / lowering motor (66) for rotating the pinion (72). A dredging device characterized by being provided above.