JP2865593B2 - Floating backhoe used for river dredging - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a floating backhoe used for dredging a riverbed.

[0002]

2. Description of the Related Art In order to make rivers beautiful, it is necessary to dredge sludge deposited on the riverbed. Riverbed dredging
There are various problems that are extremely difficult compared to sea dredging. The biggest problem is that you cannot work in open seas such as the sea. River dredging makes it difficult to freely use large machinery. It is difficult to transport to the place where dredging work is performed, and even when performing dredging work,
This is because bridges and river banks are in the way. For this reason, dredging of rivers needs to be dredged by a method suitable for the work site.
For example, in narrow rivers, backhoes are transported by land to river banks and dredged from land. This method requires vacant lots and roads on both sides of the river where the backhoe can move. Not all rivers dredged are in such an environment. In particular, such environment is extremely small in rivers in the town. In addition, this method will prevent the arm from reaching the backhoe on land when the river becomes wider,
The central part of the river cannot be dredged.

In order to prevent this adverse effect, a wide river is buried in a central part to construct a construction road. The backhoe is moved to the construction road to dredge the river. This method requires removing the road after dredging. Therefore, this method requires the cost of constructing a construction road and the extra cost of removing the constructed construction road. For this reason, there is a disadvantage that dredging cost is significantly increased.

[0004] This adverse effect can be solved by using a device that can dredge while traveling on the riverbed. As this apparatus, the apparatus of FIG.
-90852, the device of FIG.
An apparatus shown in FIG. 3 described in Japanese Patent Publication No. 2-7643 has been developed. Click device, which can move riverbed shown in figure this such
Since it is equipped with the rollers 22, dredging can be performed while traveling on the riverbed. Therefore, there is a feature that dredging can be performed without constructing a construction road in the river.

[0005]

However, the devices shown in these figures cannot be efficiently used for river dredging in practice. This is because the crawler 22 cannot move freely on the riverbed as on land. The bottom of the river where sludge is deposited is so soft that it cannot be compared to land. In particular, the riverbed that needs dredging is heavily sludge-deposited. In addition, various things are thrown into the riverbed, and there are many obstacles that can not be imagined on land. Furthermore, the river bottom has many irregularities, and when dredging or moving with the crawler 22, the water becomes muddy and the irregularities on the bottom cannot be seen. If there is unevenness in the soft ground, the backhoe used for dredging becomes extremely unstable and easily falls. This is because the ground strength of the crawler 22 becomes weak, and the inclined backhoe cannot be supported.
To make matters worse, when a backhoe falls over a river,
It is incredibly dangerous on land. that is,
The operator may be trapped in the cockpit and submerged, or thrown into cold water.

[0006] Furthermore, it moves on the riverbedBackhoe
May not be able to move on soft and uneven riverbeds.
You. In this stateBackhoeIs the safest way to move
Difficult. It can work underwaterBackhoeIs the phase
Because it ’s too expensive,BackhoeWork together
I can't move underwater without workingBackhoe
ーAnotherBackhoeBecause you ca n’t tow.
You. Stuck in a riverBackhoeTow from land
But tow tow on the land
There are often no available vacant lots or roads. In addition, in the river
Does not moveBackhoeTowing from land,Backhoe
ーIs easy to fall. On the waterBackhoe
ーTo connect the towing wire toBackhoeIs the center of gravity
Because it is towed at higher points.

[0007] Such an adverse effect is described in JP-A-60-1353.
As in the amphibious vehicle shown in FIG.
This can be solved by floating on the water surface with the float 44 and moving. The structure of the amphibious vehicle shown in this figure can be used for backhoes that dredge rivers. For example, traveling on the riverbed
Equipped with a backhoe on the riverbed traveling mechanism of crawler 22,
Can be used for river dredging. However, a bag using this structure
Ku Ho can be used for dredging large rivers but not for small rivers. Because it is necessary to equip a large float 44 to levitate the whole, it is extremely difficult to design it to be able to move under a small bridge with a small river. The most difficult part of river dredging is small rivers. In particular, dredging is extremely difficult for small rivers in the town where buildings are lined up. Unfortunately, rivers in towns that are difficult to dredge are those that need dredging. This is because sludge easily accumulates.

[0008] The present invention has been developed for the purpose of further solving this drawback. An important object of the present invention is to design the whole compactly so that it can pass under a low bridge, to freely and safely move on a weak riverbed, and to efficiently cut the riverbed of soft ground. It is an object of the present invention to provide a floating backhoe that can be dredged and used effectively for dredging of small rivers.

[0009]

SUMMARY OF THE INVENTION A floating backhoe used for dredging a river according to the present invention has the following configuration to achieve the above-mentioned object. Floating back
The ho consists of a dive section 1 that floats and sinks on the water surface and riverbed, and an engine built-in section 2 that does not sink. The diving unit 1 includes a riverbed traveling mechanism 5 and a shovel mechanism 6 that dredges the riverbed while moving with the riverbed traveling mechanism 5. The riverbed traveling mechanism 5 is equipped with a crawler 22 having an endless track on both sides on both sides.

[0010] The engine built-in unit 2, shovel mechanism 6 and clauses
The engine 10 that drives the rollers 22 and the cockpit 9 of the operator who operates the riverbed traveling mechanism 5 and the shovel mechanism 6
And The operator of the cockpit 9 is configured to operate the riverbed traveling mechanism 5 and the shovel mechanism 6 to dredge the river.

Further, the floating backhoe of the present invention
-Has the following unique configuration. (A) The diving section 1 includes a floating float 3, and the engine built-in section 2 includes a floating float 4. Floating float 3
It has buoyancy to float the entire floating backhoe . The floating float 4 has a buoyancy that allows the built-in engine unit 2 to float on the water surface while the diving unit 1 is immersed in the riverbed. (B) The engine built-in section 2 is connected to the
Can be placed on the water section 1 and separated from the diving section 1
It is connected to the dive unit 1 so that it can be The coupling mechanism 8 has a total length that allows the engine built-in section 2 to float on the water surface with the diving section 1 sinking to the riverbed. (C) The float 3 of the diving section 1 is connected to a buoyancy adjusting mechanism 7 for adjusting the buoyancy so that the diving section 1 sinks to the bottom of the river or floats on the water surface. (D) The engine 10 of the engine built-in section 2 is connected to the shovel mechanism 6 and the riverbed traveling mechanism 5.

The floating battery having the above configuration
Kuho dredges the riverbed as shown in Figs. FIG. 5 shows a state in which the entire floating backhoe floats on the water surface and moves. As shown in this figure, when moving on the water surface, the float 3
Put air in and float on the surface of the water. FIG. 6 shows a state in which water is injected into the float 3 of the dive section 1 and the dive section 1 is submerged in the water. At this time, the engine built-in part 2
Keeps floating on the water surface due to buoyancy acting on the floating float 4. FIG. 7 shows a state where the diving unit 1 is in contact with the bottom of the water. In this state, the operator of the cockpit 9 operates the riverbed traveling mechanism 5 and the shovel mechanism 6 to dredge the river.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below is an example of a floating backhoe used for river dredging to embody the technical idea of the present invention, and the present invention specifies the configuration of the floating backhoe as follows. do not do.

Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members described in the embodiments are referred to as "claims" and " In the column of “Means of the above”. However, the members described in the claims are not limited to the members of the embodiments.

The floating backhoe shown in FIGS.
-Diving part 1 that dive to the bottom of the river or float on the water surface
And a built-in engine unit 2 which is connected to the diving unit 1 via a connecting mechanism 8 and is always floating on the water surface.

The diving section 1 has a floating sinking float 3 for floating the entire floating backhoe on the water surface, a riverbed traveling mechanism 5 for moving the floating backhoe on the riverbed while dredging, and mounted on the riverbed traveling mechanism 5. Excavator mechanism 6.

The floating sink 3 is a watertight tank, and is provided at a portion connecting the side floats 3A disposed on both sides of the diving section 1 and the side floats 3A as shown in FIGS. And a central float 3B. In the side float 3A, the front and rear end lower surfaces are sloped upward toward the front end and the rear end so that the crawler 22 can be disposed outside. The side float 3A and the center float 3B disposed on both sides of the diving section 1 are independent of each other so that their buoyancy can be adjusted independently.
Further, the side float 3A and the central float 3B are shown in FIG.
As shown in FIG. 0, the inside is divided into three parts by a partition wall 11 in an airtight manner. The side float 3A and the central float 3B are air chambers 12 divided into front and rear. Since the side float 3A and the central float 3B are divided into three, the entire side float 3A is divided into six, the central float 3B is divided into three, and the air float 12 is divided into nine air chambers 12 in total. Each of the divided air chambers 12 independently adjusts the buoyancy by sucking and discharging air. The amount of air in each air chamber 12 is adjusted so that the dive unit 1 can dive in a horizontal posture and float.

The buoyancy of the entire float-float float 3 is designed so that the dive unit 1 can float with the engine built-in unit 2 mounted on the dive unit 1 with the air filled here.
A weight 13 is provided at the bottom of the float 3 to stabilize the diving section 1 when the diving section 1 is floated or lowered or when the diving section 1 is floated on the water surface. The center of buoyancy of the sink-float float 3, floating Bakkuho
-It is to be located above the center of gravity of the whole.

Further, the float / float float 3 is connected to a buoyancy adjusting mechanism 7 for independently adjusting the buoyancy of each air chamber 12 partitioned in an airtight manner. The buoyancy adjusting mechanism 7 adjusts the buoyancy of the float 3 to make the diving unit 1 dive on the river bottom or float on the water surface. The buoyancy adjusting mechanism 7 is shown in FIG.
Shown in The buoyancy adjusting mechanism 7 in this figure includes a water injection valve 14 for injecting water into each air chamber 12, a drain valve 15 for discharging water, and an air valve 16 for taking air in and out of the air chamber 12.
And Further, the buoyancy adjusting mechanism 7 is provided in each air chamber 12.
Also provided is a level sensor 19 for detecting the water level. A water injection pump 17 is connected to the water injection valve 14. A drain pump 18 is connected to the drain valve 15. The opening and closing of the water injection valve 14, the drain valve 15, and the air valve 16, and the operation of the water injection pump 17 and the drain pump 18 are controlled by the control unit 20. The control unit 20 electrically controls the operation of the valve and the pump. Instead of being driven by an electric motor, a pump driven by a hydraulic motor can be used for the water injection pump 17 and the drainage pump 18. Water injection pump 17 driven by hydraulic motor
The operation of the drain pump 18 is controlled by a hydraulic circuit of the control unit 20.

The control unit 20 controls the opening and closing of the water injection valve 14, the drain valve 15 and the air valve 16 so that the diving unit 1 is held in a horizontal position to dive or float. Control unit 20
When the dive section 1 is to be submerged, the water injection valve 17 and the air valve 16 are opened and the water injection pump 17 is operated.
To pour water into each air chamber 12. When diving, as shown in FIG. 11, when the tip of the diving unit 1 is tilted to a lowered position, in order to make the diving unit 1 horizontal, the water injection into the air chamber 12 at the lowered tip is stopped, and Air chamber 1 at the rear end
Fill only 2 Although not shown, when the diving part inclines left and right, the water injection of the lower side float is stopped and only the upward side float is injected. When the diving section 1 is horizontal, water is poured into all the air chambers 12,
Diving the diving section 1. Whether or not the dive section 1 is horizontal can be detected by providing the dive section 1 with a horizontal sensor 21.

When the dive section 1 is lifted, the drain pump 18 is operated, the drain valve 15 and the air valve 16 are opened,
Drain from each air chamber 12 and inject air. At this time,
When the diving unit 1 is inclined, the open / close state of the drain valve 15 is controlled so as to be horizontal. For example, as shown in FIG. 11, when the front end of the diving section 1 is lowered, the drain valve 15 connected to the air chamber 12 at the rear end is closed to stop draining, and the air chamber 12 at the front end is stopped. The drainage valve 15 connected to is opened to drain. When the diving section 1 is horizontal, the diving section 1 is drained from all the air chambers 12 and floats on the water surface.

The floating backhoe that divides the float 3 into front and rear parts has a feature that the diving unit 1 can be inclined by the float 3 to quickly move on the uneven riverbed.
For example, it collides with a large obstacle in front, claw
If you can't go over this with LA22,
The air chamber 12 at the distal end is drained, and the diving unit 1 is set in a posture for floating. When the diving unit 1 is in this position, the diving unit 1 is in a position to go over without colliding with an obstacle. For this reason, in this posture
When the crawler 22 is driven, it can easily get over an obstacle.

The dive section 1 to be dive moves on the river bottom by the river bottom traveling mechanism 5. The riverbed traveling mechanism 5 includes an endless track crawler 22. The crawler 22 is a side float 3A
And is arranged in two rows extending back and forth. The crawler 22 is hung on an idler 23 and a drive drive 24 arranged before and after the side float 3A. The idler 23 is located at the tip of the side float 3A,
The drive drive 24 is provided at the rear end of the side float 3A. The drive drive 24 drives the crawler 22 to move the dive unit 1 to the seabed. Drive drive 24
Is rotated by a hydraulic motor.

Track rollers (not shown) for guiding the crawlers 22 are arranged on the lower edge of the side float 3A, like the backhoe running on land. The hydraulic motor that rotates the drive drive 24 is a side float 3
A is arranged in A. Since the drive drive 24 is outside the side float 3A, the shaft connecting the hydraulic motor and the drive drive 24 passes through the side float 3A so that the side float 3A can be rotated in a watertight structure.

FIG. 12 shows a hydraulic circuit for driving the hydraulic motor 25 of the riverbed traveling mechanism 5. In this figure, hydraulic motors 25 are disposed on both sides of the side float 3A. One crawler 22 is driven by two hydraulic motors 25. This structure can drive the wide crawler 22 on both sides with good balance. In addition, the output of one hydraulic motor 25 can be reduced to make the hydraulic motor 25 compact. Although not shown, one crawler is
It can be driven by a large hydraulic motor.

The floating backhoe shown in FIG.
A drive drive 24 is provided at the rear end of the side float 3A, and an idler 23 is provided at the front end.
The drive drive 24 may be provided at the front end of the vehicle, and the idler 23 may be provided at the rear end.

Two hydraulic motors 25 for driving one crawler 22 are connected in parallel to each other and are driven to rotate together. The hydraulic motor 25 is connected to a hydraulic pump 27 via a control valve 26. The control valve 26 is controlled by an electric signal, and is controlled by an electric signal sent from a control lever 28. By operating the control lever 28, the operator switches the control valve 26 to control the rotation of the hydraulic motor 25.

When the hydraulic motor 25 is rotated forward, the claw
The drive 22 is driven to move the diving section 1 forward. When the hydraulic motor 25 is reversed, the diving unit 1 moves backward. In addition, the left and right crawlers 22 can move one of them forward or backward to bend the traveling direction of the floating backhoe right or left. The running speed of the floating backhoe is adjusted by controlling the rotation speed of the hydraulic motor 25. The rotation speed of the hydraulic motor 25 is
7 can be adjusted by changing the rotation speed. Hydraulic pump 27
Can be adjusted by the rotation speed of the engine 10 that drives it.

The floating shown in FIG.Backhoe
Connects the hydraulic motor 25 and the control valve 26 to the side float 3A.
Built in. A hydraulic motor 2 is provided in the side float 3A.
5 and a watertight chamber 29 containing a control valve 26 are provided. Watertight room
The hydraulic motor 25 and the control valve 26 disposed on the
There is no need for a water structure. Because no water enters here
is there. The piping of the hydraulic motor 25 and the control valve 26
Installed in the A hydraulic motor 25 in the float,
The control valve 26 and the piping are damaged by collision with objects during operation.
The advantage is that damage can be minimized without any damage.

The piping, pump and valve of the buoyancy adjusting mechanism 7 can be prevented from being damaged by being disposed inside the float 3. Further, by providing the watertight chamber 29, a watertight structure can be used.

The hydraulic hose and electric wiring for connecting the hydraulic motor 25 and the control valve 26 of the side float 3A to the cockpit 9, the wiring of the buoyancy adjusting mechanism 7 and the hydraulic hose are composed of the diving section 1 and the engine built-in section 2. And is provided inside a connection mechanism 8 for connecting. The coupling mechanism 8 has a cylindrical shape in which a hydraulic hose and wiring are built. The hydraulic hose and the wiring are inserted through the cylindrical connecting mechanism 8, thereby protecting the hydraulic hose and the wiring. Thus, the hydraulic hose, the wiring, the hydraulic motor 25 and the control valve 2
The floating backhoe in which all of the components 6 are disposed inside and not exposed to the outside can limit the failure of the hydraulic circuit and the electric circuit caused by the collision during the operation.

Further, as shown in FIG. 8, the floating backhoe is provided with an inlet / outlet 42 for cleaning the inside of the float / float float 3 and for maintenance of instruments, and a side float 3A.
On the side. The entrance 42 is closed by a sealing lid 43 to make the float 3 float-tight. The floating backhoe injects river water into the float 3 when the diving unit 1 sinks. Water to be injected may be muddy water due to sludge. For this reason, sludge or the like adheres to the interior of the float 3, or
Not only can it accumulate and cause a bad smell, but it can also cause a failure of the drain valve 15 and the drain pump 18. Therefore,
The float 3 needs to be periodically cleaned. In the floating backhoe , a hydraulic motor, a pump, a valve, and its piping are also disposed inside the floating float 3. For this reason, it is necessary to perform repair or inspection when these devices break down by invading the interior of the float 3. Doorway 4 provided on side float 3A
No. 2 is for people to go in and out in these cases. Cleaning and repair inspection are performed by entering the interior of the float 3 from the entrance 42.

The diving section 1 is equipped with a shovel mechanism 6 for dredging the seabed. The shovel mechanism 6, as shown in FIG.
The diving unit 1 is disposed at the front of the upper surface. Excavator mechanism 6
Is a turntable 30 rotated in a horizontal plane, and the turntable 3
A boom 33 connected to be tiltable to zero, an arm 35 connected to the tip of the boom 33 so as to be tiltable, and a bucket 37 connected to the tip of the arm 35 are provided.

The turntable 30 is located in front of the diving section 1 and has a central float 3 connecting the side floats 3A on both sides.
B is mounted so as to be rotatable via a swivel joint 31 having a waterproof structure. Although not shown, a hydraulic motor for rotating the turntable is built in a connection part closed in a watertight structure. The hydraulic motor is connected to a hydraulic pump via a control valve. As shown in FIG. 12, the same control valve that controls the hydraulic motor 25 of the crawler 22 can be used for the control valve. The hydraulic motor is driven by the control valve, and the turntable 30 is rotated by the hydraulic motor.

The boom 33 is made of a metal steel bent in a U-shape, and is mounted on the upper surface in front of the turntable 30 so as to be vertically tiltable. The turntable 30 and the boom 33 are connected by a boom cylinder 34. The boom cylinder 34 is disposed parallel to the left and right of the boom 33,
The lower end is connected to the front of the turntable 30, and the tip of the rod 34 a is connected to both sides at the center of the boom 33. The floating backhoe has both a lower end and a tip connected to the turntable 30 and the boom 33 so as to be able to rotate in the vertical direction. When the rod 34a of the boom cylinder 34 is extended, the boom 33 is raised, and when the rod 34a of the boom cylinder 34 is contracted, the boom 33 is lowered.

The arm 35 is connected to the tip of the boom 33 so that the arm 35 can be tilted in the vertical direction. The arm 35 is also made of metal steel, and a portion slightly from the rear end to the center is connected to the boom 33. Further, the boom 33 and the arm 35
Are connected by an arm cylinder 36. The arm cylinder 36 has a rear end connected to the upper surface of the center of the boom 33 and a front end of the rod 36a connected to the rear end of the arm 35. The arm cylinder 36 is also connected so that both front and rear ends can be vertically rotated. In this structure, when the rod 36a of the arm cylinder 36 is extended, the bucket 37 at the tip of the arm 35 is moved forward.
When the rod 36a is contracted, the bucket 37 at the tip of the arm 35 moves forward.

The bucket 37 is mounted on the tip of the arm 35 so as to be tiltable in the vertical direction. Arm 35
And the bucket 37 are connected by a bucket cylinder 38 via a link 39. Bucket cylinder 38
Has a rear end connected to the upper surface behind the arm 35 and a distal end of the rod 38a connected to the link 39 so that both can be rotated in the vertical direction. The link 39 is a bucket cylinder 38
When the rod 38a is extended, the claw at the tip of the bucket 37 is brought forward, and when the rod 38a is contracted, the bucket 3
7. Move the nail at the tip of 7 forward.

FIG. 13 shows a hydraulic circuit of the shovel mechanism 6. In this figure, a hydraulic motor 25 for driving the turntable 30, a boom cylinder 34, an arm cylinder 36, and a bucket cylinder 38 are provided with a control valve 4
0 is connected to the hydraulic pump 27. Control valve 4
0 is controlled by the control lever 28. The operator operates the control lever 28 to switch the control valve 40 to control the shovel mechanism 6.

FIGS. 14 and 15 show a bucket cylinder 38 having a watertight structure. The bucket cylinder 38 in this figure has a cylinder cover 41 mounted on a telescopic rod portion. As shown in the enlarged view of FIG. 16, the cylinder cover 41 is formed by molding a non-water-permeable plastic having flexibility into a bellows shape. When molding the plastic, a spiral reinforcing member (not shown) is used. ) Is inserted and reinforced. The cylinder cover 41 has one end water-tightly connected to the outer cylinder of the bucket cylinder 38 and the other end connected to the connection between the tip of the rod 38 a and the link 39. The bellows-shaped cylinder cover 41 expands and contracts in accordance with the expansion and contraction of the rod as shown in FIGS. FIG. 14 shows the cylinder cover 41 with the rod of the bucket cylinder 38 contracted, and FIG. 15 shows the cylinder cover 41 with the rod of the bucket cylinder 38 extended. As shown in these figures, when the rod is covered with the water-tight cylinder cover 41, water can be prevented from coming into contact with the surface of the rod when working in water, so that corrosion of the rod can be effectively prevented. FIGS. 14 and 15 illustrate a bucket cylinder 38 with a cylinder cover 41 mounted thereon, wherein a boom cylinder 34 and an arm cylinder 36 are attached.
Also, a waterproof structure can be provided by mounting the cylinder cover 41.

The engine built-in section 2 includes a cockpit 9, an engine 10, and a floating float 4. The cockpit 9 is provided on the upper surface of the front part of the engine built-in section 2. Watertight structure prevents water intrusion so that operators can work safely. Although not shown, the cockpit 9 is provided with an operator seat and a control lever for operating each mechanism.

The engine 10 is disposed at the bottom of the engine built-in section 2 and operates the hydraulic pump 27. The hydraulic pump 27 is connected to a hydraulic motor 25 of the riverbed traveling mechanism 5, a hydraulic motor 32 of the shovel mechanism 6, and a cylinder via a hydraulic hose. The engine 10 can also be arranged on the upper surface of the rear part of the engine built-in section 2, that is, behind the cockpit 9. However, since the engine 10 is heavy, it is desirable to dispose it at the bottom of the engine built-in portion 2 in consideration of the stability of the engine built-in portion 2.

The floating float 4 is a tank provided in the engine built-in section 2 and hermetically sealed. The inside of the floating float 4 is filled with air. The floating float 4 has a buoyancy that allows the engine built-in unit 2 to float on the water surface while the diving unit 1 is submerged. Further, the engine built-in portion 2 is provided with a weight (not shown) at a lower portion so as to stably assume a horizontal posture when floating on the water surface.

Preferably, the buoyancy of the floating float 4 is designed to be buoyant so that the diving section 1 in a diving state can be hung underwater through the connecting mechanism 8 and floated. That is, as shown in FIG. 17,
This is to ensure the safety of the operator by preventing the dive section 1 from drawing the engine built-in section 2 into the water when steep terrain occurs.

The diving section 1 and the engine built-in section 2 are connected by a connecting mechanism 8 as shown in FIGS. The coupling mechanism 8 is a metal hollow tube having a total length capable of floating the engine built-in section 2 on the water surface in a state where the diving section 1 is immersed in the riverbed. The upper end of the connection mechanism 8 is connected to substantially the center of the engine built-in portion 2 so as to be rotatable in a vertical plane. Further, the lower end of the connecting mechanism 8 is connected to the upper portion substantially at the center of the diving section 1 so as to be rotatable in a vertical plane.
As shown in FIG. 7, when the diving unit 1 is submerged in water, the connecting mechanism 8 is tilted in the vertical direction to float the engine built-in unit 2 on the water surface. Further, as shown in FIG. 5, when the diving unit 1 floats on the water surface, the connecting mechanism 8 is tilted in a horizontal direction and connects the engine built-in unit 2 in a posture of placing the engine built-in unit 2 on the diving unit 1. When the engine built-in unit 2 is mounted on the dive unit 1, the connecting mechanism 8 is provided with a stopper (not shown) so that the engine built-in unit 2 does not move forward of the diving unit 1.

Further, the connection mechanism 8 incorporates hydraulic piping and electric wiring in the hollow pipe. Hydraulic piping and electric wiring are provided on the riverbed traveling mechanism 5 of the diving section 1 and the shovel mechanism 6.
Are linked. The hydraulic piping and electric wires control the riverbed traveling mechanism 5, the shovel mechanism 6, and the buoyancy adjustment mechanism 7 of the diving section 1 with the control lever of the cockpit 9. The operator of the cockpit 9 operates these control levers to control these mechanisms to perform dredging on the river bottom.

The operation of submerging the diving section 1 on the riverbed or floating it on the water surface is performed as follows.

[When Diving the Diving Part to the River Bottom] By operating the control part 20 from the cockpit 9,
In the state in which the float 7 is operated, the water injection valve 14 connected to the float-float float 3 is opened, and water is injected into the air chamber 12 of the float-float float 3 by the water pump 17. At this time, the air valve 16 provided at the upper part of the float is also opened at the same time to discharge the air in the float. The drain valve 15 is closed. Water is injected into the float 3 and the air is discharged, so that the buoyancy of the float 3 decreases, and the diving unit 1 begins to sink into the water due to its own weight. The signal from the horizontal sensor 21 provided in the diving section 1 is
It is sent to the control unit 20. The level of water injected into the air chamber 12 of the float 3 is transmitted from the level sensor 19 to the control unit 20. The control unit 20 processes the signal from the horizontal sensor 21 and the signal from the level sensor 19, opens and closes each water injection valve 14 so as to maintain the diving unit 1 in a horizontal posture, and controls each air chamber 12. Control the amount of water injected. The control unit 20 opens and closes the water injection valve 14 to dive the dive unit 1 in a horizontal posture. When the dive unit 1 dive on the riverbed, the amount of water injected into each air chamber 12 is controlled to adjust the installation pressure at which the dive unit 1 is installed on the riverbed. The installation pressure of the dive unit 1 is adjusted so that the crawler 22 can smoothly move on the riverbed of the sludge. Diving part 1
The installation pressure is large on hard riverbeds and weak on soft riverbeds. In this state, the shovel mechanism 6 is operated to dredge the riverbed, and the crawler 22 moves the riverbed while dredging. The operator operates the control lever 28 with the built-in engine unit 2 floating on the water surface, operates the shovel mechanism 6, and moves the seabed with the crawler 22 to dredge.

[When Floating a Diving Part on the Water Surface] With the drain pump 18 operating, the air valve 16 and the drain valve 15 are opened. The water injection valve 14 closes. After passing through the drain valve 15, the water of the float 3 is discharged to the outside. Air is drawn into the drained float 3 from the air valve 16 and the buoyancy of the float 3 is increased. When the buoyancy of the floatation float 3 becomes larger than its own weight, the dive unit 1 starts to float. The horizontal attitude of the diving section 1 is detected by the horizontal sensor 21,
The level sensor 19 detects the water level of the air chamber 12 of the float 3. The control unit 20 processes the water surface sensor and the level sensor 19, and adjusts the water surface level of each air chamber 12 so as to maintain the diving unit 1 in a horizontal posture. The water level of the air chamber 12 is controlled by opening and closing the drain valve 15. When the water is completely drained from the air chamber 12 of the float 3, the drain valve 15 is closed, and the operation of the drain pump 18 is stopped. The diving section 1 floats on the water surface with the engine built-in section 2 placed thereon.

[0049]

The floating backhoe used for dredging a river according to the present invention has a feature that the whole apparatus can be made compact. The floating backhoe of the present invention is composed of a diving part that floats and sinks in water and an engine built-in part that constantly floats on the water surface, and the diving part and the engine built-in part are floats that can float on the water surface, respectively. Is provided. The floating backhoe is a floating float mounted on the diving section, and floats the diving section to the surface of the water. K
Diving unit equipped with rollers, and the inner crawler is provided with a middle sink-float float crawlers are arranged on both sides. Thus, by providing the float in both the diving section and the engine built-in section, the floating bar of the present invention is provided.
Kuho can be compact as a whole. This is because the float can be provided by utilizing the wasted space of the diving section equipped with the crawler . Furthermore, since the float of the engine built-in part is a float that only raises itself,
The whole volume can be made compact by reducing the volume of the float. For this reason, the floating backhoe of the present invention
The feature is that the whole device can be made compact. The compact floating backhoe is designed to be able to move under small bridges on small rivers, and has the advantage of being able to dredge efficiently. Furthermore, even in a river with a weak riverbed or a shallow river, the dive part floats on the surface of the water, so that the surface of the water can be freely and safely moved, and the riverbed of the soft ground can be efficiently dredged.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a conventional dredging device.

FIG. 2 is a side view showing another example of the conventional dredging device.

FIG. 3 is a side view showing another example of the conventional dredging device.

FIG. 4 is a side view showing an example of a conventional amphibious vehicle.

FIG. 5 is a side view showing a state in which the floating backhoe of the present invention floats on the water surface.

FIG. 6 is a side view showing a state in which the floating backhoe according to the present invention submerges a diving part in water.

FIG. 7 is a side view showing a state in which the diving part of the floating backhoe according to the present invention is in contact with the riverbed;

FIG. 8 is a floating bar according to the embodiment of the present invention.
Side view of Ku Ho

FIG. 9 shows a floating bar according to the embodiment of the present invention.
Cook Ho rear view

FIG. 10 is a block diagram showing a buoyancy adjusting mechanism.

FIG. 11 is a side view showing a state in which the diving part of the floating backhoe is inclined in water.

FIG. 12 is a hydraulic circuit diagram showing a hydraulic motor portion of the riverbed traveling mechanism.

FIG. 13 is a block diagram showing a hydraulic circuit of the shovel mechanism.

FIG. 14 is a side view showing a state in which the rod is contracted by the bucket cylinder.

FIG. 15 is a side view showing a state where the rod is extended by the bucket cylinder.

FIG. 16 is an enlarged side view showing a cylinder cover.

FIG. 17 is a side view showing a state in which the floating backhoe according to the present invention moves on a riverbed having steep terrain;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Diving part 2 ... Engine built-in part 3 ... Floating float 3A ... Side float 3
B ... Center float 4 ... Floating float 5 ... River bottom running mechanism 6 ... Excavator mechanism 7 ... Buoyancy adjusting mechanism 8 ... Connecting mechanism 9 ... Chip 10 ... Engine 11 ... Partition wall 12 ... Air chamber 13 ... Weight 14 ... Injection valve 15 ... Drain valve 16 ... Air valve 17 ... Water injection pump 18 ... Drain pump 19 ... Level sensor 20 ... Control unit 21 ... Horizontal sensor 22 ... Crawler 23 ... Idler 24 ... Drive drive 25 ... Hydraulic motor 26 ... Control valve 27 ... Hydraulic pump 28 ... Control lever 29 ... Watertight chamber 30 ... Rotating table 31 ... Swivel joint 32 ... Hydraulic motor 33 ... Boom 34 ... Boom cylinder 34a ... Rod 35 ... Arm 36 ... Arm cylinder 36a ... Rod 37 ... Bucket 38 ... Bucket cylinder 38a ... Rod 39 ... Link 40: Control valve 41: Cylinder Cover 42 ... Doorway 43 ... Sealed lid 44 ... Float

Claims (1)

(57) [Claims] 1. A diving part (1) floating up and down on the water surface and the river bottom;
The dive unit (1) is provided on both sides of the crawler (2),
2) equipped with a riverbed traveling mechanism (5) and a shovel mechanism (6) for dredging the riverbed while moving with the riverbed traveling mechanism (5). 6) and black
An engine (10) for driving the vehicle ( 22) and a cockpit (9) of an operator for operating the riverbed traveling mechanism (5) and the shovel mechanism (6). A floating backhoe for use in river dredging, wherein the floating backhoe is configured to operate a riverbed traveling mechanism (5) and a shovel mechanism (6) to dredge a river, and has all the following configurations. (A) The diving part (1) includes a floating float (3), the engine built-in part (2) includes a floating float (4), and the floating sink (3) has a buoyancy capable of floating the entire floating backhoe . The floating float (4) has an engine built-in part (2) with the diving part (1) submerged on the riverbed.
It has buoyancy that can float. (B) The engine built-in part (2) can be mounted on the diving part (1) via the connecting mechanism (8) , and the diving part
The diving part (1) is connected to the diving part (1) so that the diving part (1) can be separated from the diving part (1). It has a full length floating on the water surface. (C) The float (3) of the diving part (1) adjusts the buoyancy of the float to settle the diving part (1) to the riverbed,
Alternatively, it is connected to a buoyancy adjusting mechanism (7) for floating on the water surface. (D) The engine (10) of the engine built-in portion (2) is connected to the shovel mechanism (6) and the riverbed traveling mechanism (5) via a power transmission member.