JPH0143093B2 - - Google Patents

Description

Detailed Description of the Invention This invention assembles a work frame provided with a pair of rails on the bottom of the water, provides a suction bucket mechanism on the rails, and moves the suction bucket mechanism to suck up the sludge. related to a device for

(Conventional sludge collection method) Conventionally, sludge from the bottom of the water was collected as follows.

In other words, a suction bucket is suspended from a work boat and placed on the bottom of the water to suck up the sludge from that area. When collecting sludge over a wide area, the suction bucket is raised and the work boat is moved.
It was necessary to repeat the process of placing the suction bucket on the bottom of the water at the moved position.

For this reason, in this conventional collection method, the sludge collection locations are not uniform, and some parts are left behind.

Furthermore, for example, in aquaculture fishing grounds that are covered with nets, the nets cannot be removed, making it impossible to collect the sludge under the nets.

Therefore, it is conceivable to assemble a working frame on the bottom of the water, provide a traveling device on the rails of this working frame, and perform the desired collection work while moving a suction bucket mechanism provided on this traveling device.

However, as the weight of the traveling device increases, the load acting on the rail increases, and therefore the rail cannot be made very long.

Since the rails cannot be made long, even if a work frame is assembled, the area for collecting sludge will be narrowed.

(Object of the present invention) The present invention relates to an underwater sludge collection device that reduces the load of a traveling device acting on a rail and makes it possible to sufficiently increase the length of the rail.

(Embodiment of the present invention) In this embodiment, a plurality of supports 1 are erected on the bottom of the water where sludge is to be collected, and a predetermined work frame X is assembled in advance.

That is, at least six pillars 1 are prepared and arranged in two rows, three in each row, as shown in FIG. However, in this embodiment, nine pillars 1 are prepared and arranged in three rows.

Pipe-shaped rails 2 are spanned between the lower portions of the columns 1 in the column direction, and support members 3 are provided at required locations on the rails 2. A pipe 4 is also extended between the outermost supports 1 of each row, and a guide member 6 for a suction hose 5 is movably provided on this pipe 4.

A traveling device S is installed between the pair of rails 2 as described above.
A self-propelled mechanism, which will be described later, is provided on both sides.

The traveling body 7 is hollow inside to form an air chamber 8 (see FIG. 4), thereby giving the traveling body 7 itself buoyancy. The reason why the traveling body 7 itself is given buoyancy is to reduce the load acting on the rail 2 and to ensure that the rail 7 has a sufficient span.

Rollers 9 and 10 that contact the upper and side surfaces of the rail 2 are provided on the lower side surfaces of both ends of the traveling body 7 which is thus given buoyancy.

In addition, in this embodiment, since the six columns 1 are arranged in two rows as described above, the traveling section of the traveling device S is divided into two with the middle column as the border. A traveling device S is mounted on each of the divided travel sections. In other words, a work frame X assembled using six columns is equipped with two traveling devices S.

A pair of winding drums 11 to 14 are provided on the upper surface of both ends of the traveling body 7 as described above, and these winding drums have their rotational axes parallel to the longitudinal direction of the traveling body 7. There is.

Then, the wire 15~ is attached to these winding drums.
18, the wires of the pair of winding drums 11 and 12, 13 and 14 are pulled out in opposite directions, and their tips are fixed to the support 1 facing the drums.

Further, an air motor 19 is provided on the side of the pair of winding drums 11 and 12, and this air motor 19 is provided with a pair of sprockets 21 and 22 on its drive shaft 20. Endless chains 23 and 24 wound around the sprockets 21 and 22 are wound around sprockets 25 and 26 provided on the pair of winding drums 11 and 12, respectively.

Further, a rotary shaft 27 is connected to the drive shaft 20 of the air motor 19 on the opposite side to the side where the sprockets 21 and 22 are provided, and a sprocket 28,
29 are provided.

Note that the reference numeral 30 in the figure indicates the rotating shaft 27.
It is fixed to the upper surface of the traveling body 7 with a bearing for holding it.

As described above, the sprockets 28 and 29 provided on the rotating shaft 27 are equipped with endless chains 31 and 32.
Wrap around these endless chains 31, 32,
It is wound around the sprockets 33, 34 of the winding drums 13, 14 corresponding to the tip of the rotating shaft 27.

Therefore, when the air motor 19 is rotated now, the pair of winding drums 11 and 12, 13 and 1
4 rotate in opposite directions. That is, one winding drum rotates in a direction to wind the wire, and the other winding drum rotates in a direction to unwind the wire.

When the winding drum rotates as described above, the traveling body 7 travels in the wire winding direction.

As is clear from this, the winding drums 11 to 14 and the air motor 19 are the main elements and constitute the self-propelled mechanism.

In this way, the traveling device S equipped with a self-propelled mechanism has
A suction bucket mechanism T with a traveling function is provided, and the configuration of this suction bucket mechanism T is as follows.

That is, as is clear from FIGS. 4 and 5, this suction bucket mechanism T has a roller 36 provided on its traveling frame 35, and
are brought into contact with the top and side surfaces of the traveling body 7 and are movable along the traveling body 7.

The traveling frame 35 is provided with a pair of air cylinders 37, and the tips of the piston rods 38 of these air cylinders 37 are
A continuous member 39 is provided. piston rod 38
A bolt 40 is provided on this connecting member 39 provided at the tip, and this bolt 40 is inserted into a long hole 43 of a support piece 42 provided on a suction bucket 41. Further, a compression spring 44 is interposed between the traveling frame 35 and the suction bucket 41.

Due to the action of the compression spring 44, a downward force is always applied to the suction bucket 41. Since a downward force is acting on the suction bucket 41 in this way, the bolt 40 comes into contact with the upper end of the normal elongated hole 43.

Therefore, if the air cylinder 37 is contracted in the above state where the bolt 40 is in contact with the elongated hole 43, the suction bucket 41 will rise against the compression spring 44.

The suction bucket mechanism T moves along the traveling body 7, and its driving mechanism mainly uses an air motor 45 and a winding drum 46 provided on one side of the traveling body 7, that is, on the left side of FIG. It's natural.

That is, a sprocket 48 is provided on the drive shaft 47 of the air motor 45, and this sprocket 48
An endless chain 49 is wound around a sprocket 50 provided on the winding drum 46.

Therefore, when the air motor 45 is driven, the winding drum 46 rotates.

A wire 51 is wound around the winding drum 46 that rotates in this manner. Both ends of this wire 51 are pulled out from the winding drum 46, and one end thereof is directly connected to the traveling frame 35. The other end of the wire 51 once passes through the running frame 35, is wound around a pulley 52 provided on the other side of the running body 7, and is made to make a U-turn.
The other end of the U-turned wire is connected to the traveling frame 35 from the opposite side to the one end of the wire.

Therefore, the winding drum 4 is
6 rotates, the suction bucket mechanism T travels along the traveling body 7 either to the left or right depending on the direction of rotation.

The suction hose 5 described above is connected to the suction bucket 41, and the sludge sucked by the suction bucket 41 is sucked up to a work boat or land via the suction hose 5.

Note that if the suction bucket 41 has a function of stirring the sludge, the suction effect will be further improved. A structure for stirring sludge has already been provided by the present applicant in Utility Application No. 163151/1983 (Patent Application No. 86610/1983).

In addition to assembling the work frame
3, and a control valve 54 for controlling each of the air motors and air cylinders.

Therefore, in the aquaculture fishing ground where the net 55 is set, the work frame X is assembled so that the rail 2 is located below the net 55.

As shown in FIG. 1, two traveling devices S are spanned between the pair of rails 2 of the work frame X assembled in this way, and they are positioned on opposite sides.

When the traveling device S is extended over the rail 2 in this manner, the suction bucket 41 comes into close contact with the bottom of the water. This suction bucket mechanism T includes a compression spring 44.
Since this is provided, even if the water bottom is uneven, the suction bucket 41 can be tilted along the water bottom. From this state, while stirring the sludge in the area covered by the suction bucket 41, a suction pump (not shown) is driven to suck the sludge.

When the sludge collection process at this location is completed, the air cylinder 37 is driven to slightly raise the suction bucket 41, while the air motor 45 is driven to rotate the winding drum 46, and the suction bucket mechanism T is moved to the traveling body. Move it a little along 7.

During this movement process, if the suction bucket 41 hits an obstacle at the bottom of the water and becomes unable to move, the air cylinder 37 of the suction bucket mechanism T
further contract. When the air cylinder 37 contracts, the suction bucket 41 further rises against the compression spring 44, so that it can overcome the above-mentioned obstacle.

Once the suction bucket mechanism T has finished running on the traveling body 7 as described above, the air motor 19 is driven to rotate the winding drums 11 to 14 in a predetermined direction, and the traveling device S is moved along rail 2.

Then, the suction bucket mechanism T is moved again along the traveling body 7 from the above-mentioned moving position of the traveling device S, and the same sludge collection work as described above is performed.

In this way, the above-mentioned collection work by one of the two traveling devices S has been completed, but now the sludge collecting work by the other traveling device S is started. At this time, one of the traveling devices S removes it from the rail 2 and extends it between the rails 2 of the second row.

Further, when the collecting work by the other traveling device S is completed, the other traveling device S is passed between the rails 2 in the second row, and the collecting work by one traveling device S is started.

During this time, the struts 1 and rails 2 located on the outside of the first row are removed and assembled on the outside of the rails 2 on the second row.

In this way, sludge of a desired area can be continuously collected.

Further, as described above, since the inside of the traveling body 7 is made hollow to form the air chamber 8, the load acting on the rail 2 is reduced due to its buoyancy. Since the load acting on the rail 2 is reduced in this way, the span of the rail can be increased, and the traveling length of the traveling device S can be increased accordingly. Therefore, the area for collecting sludge by assembling the work frame X at one time can be increased.

As described above, the suction bucket mechanism T is provided with the air cylinder 37 to avoid obstacles at the bottom of the water.
5 may be provided with a sensor such as an ultrasonic wave to detect obstacles on the bottom of the water, and the air cylinder 37 may be driven in conjunction with the sensor.

(Structure of the present invention) A work frame in which at least a pair of rails are constructed near the bottom of the water is assembled underwater, and a traveling body of a traveling device equipped with a self-propelled mechanism is stretched between the rails. The running body is hollow and serves as an air chamber, and the running body is characterized in that it is provided with a suction bucket mechanism equipped with a drive mechanism for moving the running body along the running body.

Therefore, by moving the suction bucket mechanism along the traveling body and moving this traveling body along the rail, sludge at the bottom of the water can be collected uniformly.

(Effects of the Invention) In the present invention, the traveling body is made hollow and the hollow portion is used as an air chamber, so that buoyancy is generated in the traveling body itself.

Since the traveling body has buoyancy, the load acting on the rail can be reduced even if the traveling body is provided with a self-propelled mechanism and a suction bucket mechanism.

Since the load acting on the rail can be reduced, sufficient strength can be obtained even if the rail is considerably long.

Since the rail can be made longer in this way, the movement range of the traveling body can be correspondingly widened. Therefore,
Sludge can be collected from a wide range by assembling the work frame in one go.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the assembled work frame, Fig. 2 is a plan view of the traveling device, Fig. 3 is a front view of the same, and Fig. 4 is a suction bucket. FIG. 5 is a front view of the mechanism, FIG. 5 is a side view, and FIG. 6 is a side view of the traveling body. X... work frame, 2... rail, S... traveling device, 7... traveling body, 8... air chamber, T... suction bucket mechanism.

Claims (1)

[Claims] 1 A plurality of supports are erected in at least two rows underwater, and rails are installed between each row of supports, and these rails are located close to the bottom of the water, and there is no space between each pair of rails. A pair of winding drums are provided on each side of the traveling body, and pulling members such as wires wound around the pair of winding drums are pulled out, and the pulling members are pulled out. The leading end is fixed to the opposite column, and the winding drum is rotated by the driving force of the drive mechanism, so that the traveling body moves along the rail while winding up the traction member. , an apparatus for collecting water bottom sludge, in which the traveling body is provided with a suction bucket mechanism having a drive mechanism for moving the traveling body along the traveling body.