JPH039246B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a legged walking dredging device that walks with a plurality of legs touching the bottom of the seabed and the hull supported above the water surface.

[Conventional technology]

In this type of dredging device, for example, as shown in the plan view of FIG. 7 and the side view of FIG. and three pillars B1
2, the pedestal A is attached to the well A10-1 of the main body via the carriage A13, and the pedestal B
It is known that these are each attached to the well B10-2 of the main body via a carriage B14, and each carriage is provided with a lifting device and a carriage moving device (not shown).

In such a dredging device, as shown in Fig. 8, the pedestal A11 touches the bottom of the seabed and supports the main body 10 above the water surface, and the pedestal B12 is pulled away from the seabed and then holds the main body. By moving the carriage A13 backward, the main body moves forward. Next, when the carriage A13 reaches the rearmost part of the well A10-1, the elevating device touches the pillar B12 and moves the main body from this position. The carriage A13 is supported by the well A1, and the pillar A11 is pulled away from the seabed.
After moving to the frontmost part of 0-1, the main body walks in the front-back direction by repeating the action of landing on the pedestal A11 and separating the pedestal B12 from the seabed.

In addition, in this type of dredging equipment, in the same manner as above, pedestal B12 is used as carriage B instead of pedestal A.
By moving along the well B10-2 via the well B10-2, the user can also walk in the left-right direction.

However, this type of dredging machine has the following problems.

(1) Stability during work and walking Because the related parts and equipment such as the dredging machine are located on the main body 10, during work and when walking forward and backward, the stability of the pedestal, especially the pedestal A for forward and backward movement and work, is Since the load changes drastically as the center of gravity of the entire weight shifts, and as shown in FIG. 7, there are also restrictions on the arrangement of the pillars A and B, problems with overturning stability occur.

(2) Arrangement of the dredging machine In the conventional type, the size of the main body 10 is determined by the pedestal arrangement, and in order to secure the dredging width, the installation position of the dredging machine must be set so as not to interfere with the pedestal B12 during ladder swing. Inevitably, it will be placed at the front, which will cause a loss of stability.

(3) Stability during levitation The conventional model has the same number of carry wells as the number of pillars, so there are problems with loss of buoyancy and deterioration of stability.

[Problem that the invention seeks to solve]

The present invention was proposed in view of the above circumstances, and aims to reduce center of gravity movement and leg load variation during walking, increase stability, simplify structure, and reduce size and weight. The purpose of this invention is to provide a legged walking dredging device.

[Means for solving problems]

To this end, the present invention provides an outer frame in which a front floating body and a rear floating body each extending in the horizontal direction are connected by a pair of left and right vertical girders parallel to each other, and lifting means are provided at the left and right ends of the front floating body and rear floating body, respectively. an inner frame formed by connecting vertically extending left and right floating bodies by a pair of front and rear cross beams parallel to each other; A slide that supports the longitudinal girders and cross beams that are disposed at the cross section of the horizontal cross beams and the vertical beams that intersect each other in a direction perpendicular to each other via rollers. a carrier, a driving means for independently driving longitudinal beams and cross beams attached to each of the slide carriers and intersecting with each other in the longitudinal direction; a swivel base, a swivel drive means for rotating the swivel base relative to the inner frame, a dredging ladder having an upper end pivotally connected to the lower end of the swivel base, and a dredging ladder for raising and lowering the dredging ladder around the upper end. It is characterized by being equipped with a ladder elevating means for raising and lowering.

[Effect]

With such a configuration, it is possible to obtain a legged walking dredging device that reduces center of gravity movement and leg load variation during walking, increases stability, simplifies structure, and is smaller and lighter. can.

〔Example〕

An embodiment of the present invention will be explained with reference to the drawings.
Figure 1 is a plan view, Figure 2 is a vertical sectional view of Figure 1, Figure 3 is a side view and front view of the XY carrier in Figure 2, and Figure 4 is the forward movement of the dredger in Figure 1. FIG. 5 is a side view showing the procedure, FIG. 5 is a front view showing the method of traversing the dredger shown in FIG. 1, and FIG. 6 is a side view showing the floating state of FIG. 2.

First, referring to the outer frame 1 in FIGS. 1 and 2, 1-1a and 1-1b are front floating bodies each having a relatively small rectangular cross section and a relatively long lateral length; A rear floating body with a relatively large rectangular cross section and a relatively short lateral length, 1-2 are four pedestals A
Each pedestal A is attached to the left and right ends of the front floating body 1-1a and the left and right ends of the rear floating body 1-1b via lifting devices (not shown), and the shape of the lower end of each is designed according to the quality of the seabed soil. Ru.

Reference numeral 1-3 denotes a pair of left and right longitudinal girders having a rectangular cross section and parallel to each other, each forming a structural strength member that connects and fixes the front floating body 1-1a and the rear floating body 1-1b, and each longitudinal girder 1-3 A pair of upper and lower parallel rails 3-4 are installed at the upper ends of both sides for guiding the carrier rollers. Numeral 1-4 is a buoyancy tank, which is provided as necessary within the range permitted by the arrangement of the dredger 4 in order to supplement the buoyancy during floating. Both end portions of the front floating body 1a are made larger in cross-sectional area than the middle portion, and the lower ends respectively protrude below the middle portion.

Next, talking about the inner frame 2, 2-
1 and 2-1 are a pair of vertically elongated left and right floating bodies each having a rectangular cross section, a left floating body and a right floating body, 2-2 are four pedestals B, which are made to have the same structure as pedestal A, and each have a pair of left and right floating bodies 2. It is attached to the front and rear ends of -1 so that it can be raised and lowered in the same manner.

Reference numeral 2-3 denotes a pair of front and rear parallel cross beams having a rectangular cross section and parallel to each other, which form a structural strength member that connects and fixes the front and rear ends of the left and right floating bodies 2-1, respectively. At the lower end, a pair of upper and lower parallel rails 3-4 are installed for guiding carrier rollers. 2-4 is parallel cross beam 2-3
and a dog-shaped auxiliary beam for reinforcing the floating body 2-1 on both sides; 2-5 is a swivel support provided at the joint of the rear cross beam 2-3 and the auxiliary beam 2-4; A vertical cylindrical turning table 4-8 is pivotally supported.

Furthermore, in FIG. 3, referring to the X-Y carrier 3, 3-1 is four carrier bodies, the lower part of which is movably fitted along the upper end of the longitudinal girder 1-3, and the upper part of the carrier body 3-1. are respectively transverse beams 2
-3 supports the outer frame 1 and the inner frame 2 so as to be movable in directions perpendicular to each other.

3-2 is a plurality of rollers pivotally supported by pins 3-3 at the upper and lower ends of the carrier body 3-1, and each roller 3-2 is attached to a pair of upper and lower rails 3-4 of the longitudinal beam 1-3, and a cross beam 2. -3 pair of upper and lower rails 3
It rolls guided by -4.

Regarding the dredging machine 4, in Figs. 1 and 2, 4-1 is a ladder, the upper end of which is pivotally connected to the trunnion 4-7 at the lower end of the swivel base 4-8, and the cutter 4-2 at the lower end. A cutter drive device 4-3, a dredging pump 4-4, a mud suction pipe 4-5, a mud removal pipe 4-6 are installed in the middle, and a trunnion 4
-7 is a vertically rotating joint that allows the rudder angle to be varied according to the working water depth.

4-6 is a mud removal pipe, the vicinity of the trunnion 4-7 is a flexible pipe made of a rubber hose 4-6a, etc., and the rotary joint 4- on the upper part of the swivel base 4-8
It is connected to a marine pipe (not shown) from the inner frame 2 via 6b, and discharges dredged soil in the form of slurry to a predetermined location.

4-7 is a trunnion, which is installed at the lower end of the swivel base 4-8, and which also transfers the torque for rudder rotation to the trunnion 4.
-7 from the swivel base to the rudder 4-1.

4-8 is a vertical cylindrical swivel base, and the inner frame 2
The swivel support 2-5 is rotatably supported by a pairing (not shown), and a trunnion 4-5 is attached to the lower end.
7. Ladder lift hydraulic cylinder 4-10 at the top
It has an eye plate for use, a rotating arm 4-9, and a rotating joint 4-6b for a mud removal pipe.

4-9 is a swing arm that projects horizontally backward from the upper end of the swing base 4-8, and rotates the eye plate at the tip and the eye plate (unmarked number) provided on the cross beam 2-3 of the inner frame 2. They are connected by a hydraulic cylinder 4-11, and by expanding and contracting the hydraulic cylinder 4-11, the swivel base 4-8 is rotated left and right.

Reference numeral 4-10 denotes a hydraulic cylinder for lifting the ladder, the upper end of which is pivotally connected to the front end of the swing arm 4-9, and the lower end of which is pivotally connected to the vicinity of the upper end of the rudder 4-1.

Finally, in FIGS. 4 and 5, reference numeral 5 denotes a hydraulic cylinder for forward and backward movement, the rear end of which is pivotally connected to the X-Y carrier 3, and the front end to the longitudinal beam 1-3, respectively.

6 is a hydraulic cylinder for left and right movement, one end is X-
The other end of the Y carrier 3 is pivotally connected to the cross beam 2-3.

In order to perform dredging work in such a device, as shown in Fig. 2, the pillars A1-2 of the outer frame 1 are placed on the bottom of the seabed, the outer frame 1 is supported above the water surface, and the rudder rotation cylinder is Dredging is carried out by extending and retracting 4-11 and swinging the rudder.

In order to move this device forward, first, as shown in Fig. 4, the four pillars A1-2 are placed on the seabed,
After pulling the four pillars B2-2 off the seabed and retracting the hydraulic cylinder 5 to move the inner frame 2 forward relative to the outer frame 1, as shown in FIG. Place the pedestal B2-2 directly on the seabed,
After supporting this device, as shown in FIG. 3, after extending the hydraulic cylinder 5 and moving the outer frame 1 forward relative to the inner frame 2,
After the book reaches the bottom of the pillar A1-2, the user can move forward by repeating this operation.

Similarly, by expanding and contracting the hydraulic cylinder 6,
The device can be moved left and right in the manner shown in FIGS. 1 and 2.

The front and rear pair of floating bodies 1-1a and 1-1b, and the left and right pair of floating bodies 2-1 and 2-1 are designed to maintain buoyancy and stability when floating on the water surface and moving, as shown in Figure 6. The distance between the pair of front and rear floating bodies 1-1a and 1-1b and the distance between the pair of left and right floating bodies 2-1 and 2-1 are determined by the longitudinal stability and movement distance, and the swing width of the rudder, respectively. ,
Determined by lateral stability and travel distance.

Here, since all related devices for driving the dredging machine 4 are located on the inner frame 2 or on the dredging machine 4 attached to the inner frame 2, no operational problems will occur due to movement of the inner frame 2 during dredging work. .

According to such a device, the following effects can be achieved.

(1) By configuring the main body by dividing it into an inner frame and an outer frame, it is possible to reduce center of gravity movement and leg load fluctuations during movement and walking, and increase stability during work.

(2) The rudder has been placed in a position that is advantageous in terms of stability, and the overall structure can be made smaller and lighter.

(3) When the dredger rises to the surface of the water, it fits within the swamp of the main body and does not protrude below, making it convenient for towing in shallow waters.

(4) The floating bodies constituting the outer frame and inner frame can be placed in the most advantageous position for stability when surfacing on the water surface.

(5) By adopting an X-Y carrier, it is possible to move forward and backward, left and right,
The walking mechanism can be simplified.

〔Effect of the invention〕

In short, according to the present invention, an outer frame is formed by connecting a front floating body and a rear floating body each extending in the transverse direction by a pair of left and right longitudinal girders parallel to each other;
Lifting legs are respectively installed through the left and right ends of the front floating body and the rear floating body via lifting means, and an inner frame formed by connecting the left and right floating bodies extending in the vertical direction by a pair of front and rear cross beams that are parallel to each other; Lifting legs are installed through the front and rear ends of the left and right floating bodies through lifting means, respectively, and the vertical legs are installed at the cross-shaped three-dimensional intersections of the pair of left and right vertical girders and the pair of front and rear cross beams, and intersect with each other. a slide carrier that supports the girder and the cross beam in a direction perpendicular to each other via rollers; a driving means that is attached to the slide carrier and that intersects each other and independently drives the longitudinal beam and the cross beam in the longitudinal direction; and a rear center of the inner frame. a swivel base provided in the swivel base and rotatably supported around a vertical axis; a swivel drive means for rotating the swivel base with respect to the inner frame; an upper end pivotally connected to a lower end of the swivel base; By providing a dredging ladder and a ladder lifting means for raising and lowering the dredging ladder around its upper end, it reduces center of gravity movement and leg load load fluctuations during walking, increases stability,
The present invention is industrially extremely useful because it provides a legged walking dredging device that is simpler in structure, smaller in size, and lighter in weight.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the present invention, and FIG.
The figure is a longitudinal sectional view of Figure 1, Figure 3 is a side view and front view showing the XY carrier in Figure 2, Figure 4 is a side view showing the forward movement of the dredger in Figure 1, and Figure 5 is 1st
FIG. 6 is a front view showing how the dredger shown in the figure moves, and FIG. 6 is a side view showing the floating state of FIG. 7th
The figure is a plan view showing a known legged walking dredger.
The figure is a side view of FIG. 7. 1... Outer frame, 1-1a... Front floating body,
1-1b... rear floating body, 1-2... pedestal A, 1-
3... Longitudinal girder, 1-4... Buoyancy tank, 2... Inner frame, 2-1... Pair of left and right floating bodies, 2-2...
...Pillar B, 2-3...Cross beam, 2-4...Auxiliary beam,
2-5...Swivel cradle, 3...XY carrier, 3-
1...Carrier body, 3-2...Roller, 3-
3...pin, 4...dredging machine, 4-1...ladder,
4-2... Cutter, 4-3... Cutter drive device, 4-4... Dredging pump, 4-5... Sludge suction pipe,
4-6...Sludge removal pipe, 4-6a...Rubber hose, 4
-6b... Rotating joint, 4-7... Trunnion, 4
-8...Swivel base, 4-9...Swivel arm, 4-10...
... Lifting hydraulic cylinder, 4-11 ... Swinging hydraulic cylinder, 5 ... Hydraulic cylinder for forward and backward movement, 6
...Hydraulic cylinder that moves left and right.

Claims (1)

[Claims] 1. An outer frame formed by connecting a front floating body and a rear floating body, each extending in the transverse direction, by a pair of left and right vertical girders parallel to each other, and an outer frame that is installed through the left and right ends of the front floating body and rear floating body, respectively, via lifting means. an inner frame formed by connecting left and right floating bodies each extending in the vertical direction by a pair of front and rear cross beams parallel to each other; and a lifting leg that is installed through the front and rear ends of the left and right floating bodies through lifting means, respectively. and a slide carrier that is disposed at the cross section of the left and right pair of vertical beams and the front and rear pair of horizontal beams and supports the vertical beams and horizontal beams that intersect with each other in a direction perpendicular to each other via rollers; a driving means for independently driving longitudinal beams and cross beams attached to the slide carriers and intersecting with each other in the longitudinal direction; a swivel table provided at the rear center of the inner frame and supported rotatably around a vertical axis; a swivel base driving means for rotating the swivel base relative to the inner frame; a dredging ladder having an upper end pivotally attached to the lower end of the swivel base; and a ladder elevating means for raising and lowering the dredging ladder around the upper end. A walking dredging device with legs.