JP7117024B2 - underwater bulldozer - Google Patents

Description

TECHNICAL FIELD The present invention relates to an underwater bulldozer suitable for dredging, and more particularly to an underwater bulldozer suitable for dredging in water areas where the depth of water varies.

2. Description of the Related Art Conventionally, work vessels called dredgers are used in dredging work, and examples thereof include grab dredger equipped with a grab bucket and backhoe dredger equipped with a backhoe. In addition, the applicant of the present application has disclosed a self-propelled work boat on which heavy machinery such as a backhoe can be loaded (see Patent Document 1). A self-propelled work boat equipped with heavy equipment disclosed in Patent Document 1 includes a hull formed by connecting a plurality of hull structural members arranged in parallel from the bow to the stern, and a hull propulsion device for propelling the hull, The hull is provided with a recessed portion for mounting heavy equipment, which is open on the upper surface and the bow side of the hull, and each of the plurality of hull constituent members is a connection for separably connecting adjacent hull constituent members. A mechanism is provided, and the distance from the bottom of the hull to the waterline is a depth that allows the hull to run on water without running aground when heavy equipment is loaded.

According to the self-propelled heavy machinery work boat disclosed in Patent Document 1, a heavy machinery such as a backhoe is mounted in a recess for loading heavy machinery, goes to a place where waste materials are floating on the surface of the water, and uses this heavy machinery to remove the waste materials. It is possible to collect or carry out work such as dismantling work. In addition, since the bow side of the recess for mounting heavy equipment is open, the bow can be moored close to the ground, and heavy equipment can travel between the ground and the hull. Furthermore, since the distance from the bottom of the hull to the waterline is a depth that allows the hull to run on water without running aground when heavy equipment is loaded, it is possible to float on the surface of shallow water or to collect even waste materials in the water. .

In addition, a self-propelled underwater bulldozer is disclosed which is capable of self-propelled and self-propelled and capable of progressing earth removal work regardless of sea and weather conditions (see, for example, Patent Document 2). The underwater bulldozer described in Patent Document 2 is a submersible equipped with a propulsion device for navigation, a crawler device for traveling on the seabed, and a soil removal device, and a recycled diesel engine in which each of these devices is mounted on the submersible. It is characterized in that it is configured to be driven by

According to the self-propelled self-propelled underwater bulldozer according to Patent Document 2 configured in this way, since it is equipped with a recycled diesel engine that independently generates power in the sea, earth removal work by the earth removal device can be performed under sea conditions and conditions. It is described that it can be carried out in a free direction and over a wide range regardless of weather conditions.

JP 2015-101104 A Japanese Utility Model Publication No. 56-9007

According to the self-propelled heavy machinery work boat disclosed in Patent Document 1, since heavy machinery such as a backhoe can be arranged under the girder, dredging and excavation work under the girder can be performed relatively easily. However, in brackish waters, the water depth changes depending on the tide, and in rivers and lakes, due to the increase in water due to rainfall. When the water depth is particularly deep, the backhoe bucket cannot reach the bottom of the water, making dredging work impossible. .

On the other hand, if a large backhoe is installed in advance so that it can reach the bottom even in deep water, heavy equipment cannot be placed under the girder if there is not enough work space under the girder. Dredging work will not be possible.

Also, according to the self-propelled underwater bulldozer disclosed in Patent Document 2, dredging can be performed regardless of the water depth. However, since it requires a pressure-resistant capsule and a watertight engine control room for self-propelled underwater, the structure will be complicated and the manufacturing cost will be very high.

Therefore, in view of the above-mentioned problems, the inventor of the present application has been earnestly studying to provide an underwater bulldozer that can easily perform dredging work according to the water depth even in deep water areas and water areas where the water depth changes. As a result of repeating the above, the present invention was achieved.

That is, the underwater bulldozer of the present invention comprises a float barge, a lower travel device having a scraping plate in front, one or more guide pillars connecting the float barge and the lower travel device, and the float platform. and a guide pillar insertion opening provided substantially in the center of the float barge. It is characterized by being able to adjust the dimension between it and the device.

Further, in the underwater bulldozer of the present invention, the guide pillar has a rectangular tube shape, and racks are provided along the longitudinal direction of the pair of side wall outer surfaces of the guide pillar, and the peripheral edge portion of the guide pillar insertion opening is provided. (2) a pair of motors having pinion gears meshing with the rack are provided facing each other;

Further, in the underwater bulldozer of the present invention, a lifting device for the guide pillar is arranged on the float barge.

Further, in the underwater bulldozer of the present invention, the float barge is provided with an underwater propulsion device.

According to the underwater bulldozer of the present invention, it is possible to easily adjust the dimension between the float barge and the undercarriage by attaching and detaching the guide pillar. Dredging work can be easily carried out according to the conditions. Especially in brackish waters, the water depth changes with time due to the tide, but according to the underwater bulldozer of the present invention, the dredging work can be continued while coping with the change of water depth with time.

Further, in the underwater bulldozer of the present invention, the guide pillar has a rectangular tubular shape, and a pair of outer side wall surfaces of the guide pillar are provided with racks along the longitudinal direction of the outer side wall surfaces. Since a pair of motors having pinion gears meshing with the rack are arranged facing each other, the guide pillar according to the present invention can be easily moved up and down by the rack and pinion, so that the float barge and the lower traveling device You can easily adjust the dimensions between

Furthermore, in the underwater bulldozer of the present invention, since the hoisting device for the guide pillar is disposed on the float barge, it is possible to save labor during the work of inserting the guide pillar and during the transport work.

Further, in the underwater bulldozer of the present invention, the float barge is provided with an underwater propulsion device, so that the water depth is much deeper and the undercarriage can easily move in water areas where the undercarriage does not reach the bottom of the water or in water areas where dredging is not required. can do.

1 is a side view showing the overall configuration of an underwater bulldozer according to one embodiment of the present invention; FIG. 2 is a front view of the underwater bulldozer shown in FIG. 1; FIG. Fig. 2 is a plan view of the underwater bulldozer shown in Fig. 1; FIG. 2 is a side view showing a mode in which the dimension between the float barge and the undercarriage is minimized in the underwater bulldozer shown in FIG. 1;

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the underwater bulldozer of this invention is explained in full detail based on drawing. FIG. 1 is a side view showing the overall configuration of an underwater bulldozer 10 according to one embodiment of the present invention, FIG. 2 is a front view of the underwater bulldozer 10 of this embodiment, and FIG. 3 is a diagram of the underwater bulldozer 10 of this embodiment. It is a top view.

As shown in FIGS. 1 to 3, the underwater bulldozer 10 of the present embodiment includes at least a float barge 11, a lower travel device 13 having an earth removal plate 12 in front, a float barge 11 and a lower travel device 13. , an operator's cab 15 arranged on the float barge 11, and a guide pillar insertion port 16 arranged substantially in the center of the float barge 11. consists of

The lower traveling device 13 of the underwater bulldozer 10 of this embodiment is a crawler type traveling device that is applied to general bulldozers and backhoes. With this lower traveling device 13, it is possible to self-travel on the bottom of the water as well as on land. Although a rake 19 is provided behind the undercarriage 13 according to the present embodiment, the undercarriage of the underwater bulldozer according to the present invention is not limited to a structure having a rake.

An operator's cab 15 is arranged on the float barge 11 related to the underwater bulldozer 10 of this embodiment. It is configured such that the operation of the lower traveling device 13 and the operation of the earth removing plate 12 and the rake 19 can be performed according to commands from the operator's cab 15 . Since the operator's cab 15 of the underwater bulldozer 10 of the present embodiment is positioned on the float barge 11 even when the underwater bulldozer 10 is self-propelled in the water area, the operator's cab of the conventional underwater bulldozer is required to have high watertightness and pressure resistance. The cab of a general bulldozer or backhoe used on land can be applied. Although the cab 15 may be fixed on the float barge 11, it is preferably installed on the float barge 11 so as to be able to turn.

The underwater bulldozer 10 of this embodiment includes one or more guide pillars 20 that connect the float barge 11 and the undercarriage 13 . As shown in FIG. 3, the guide pillar 20 related to the underwater bulldozer 10 of this embodiment has a rectangular tubular shape, and is inserted into a guide pillar insertion opening 16 disposed substantially in the center of the float barge 11. , the float barge 11 and the undercarriage 13 are connected.

More specifically, the rectangular tube-shaped guide pillar 20 according to the present embodiment includes racks 23, 23 along the longitudinal direction of the outer surface of the pair of side walls 21 of the guide pillar 20. (See Figure 2).

On the other hand, the guide pillar insertion opening 16 provided in the substantially central portion of the float barge 11 according to the present embodiment has a rectangular shape that matches the shape of the guide pillar 20 in a plan view. is provided with a guide roller 24 for guiding the guide pillar 20 inserted through the guide pillar insertion opening 16 .

A pair of motors 18 , 18 having pinion gears 17 meshing with the racks 23 of the guide pillars 20 are provided on the float barge 11 along the periphery of the guide pillar insertion opening 16 . Therefore, when the guide pillar 20 is inserted from above the guide pillar insertion opening 16 , the racks 23 , 23 provided in the guide pillar 20 are provided with the motors 18 , 18 arranged opposite to the periphery of the guide pillar insertion opening 16 . They mesh with the pinion gears 17, 17, respectively. When the motors 18, 18 are driven in this state, the guide pillar 20 can be vertically moved by the rack and pinion.

According to the underwater bulldozer 10 of this embodiment having the above configuration, the guide pillars 20 inserted through the guide pillar insertion openings 16 are vertically moved by the rack and pinion, and the float barges connected by the guide pillars 20 are moved. The dimensions between 11 and undercarriage 13 can be easily adjusted. By connecting a plurality of guide pillars 20, the dimension between the float barge 11 and the lower traveling device 13 can be easily increased. Therefore, in a deep water area, by sequentially connecting the guide pillars 20, it is possible to easily perform the dredging work of the bottom of the water while self-propelled by the lower traveling device 13. - 特許庁In this embodiment, the upper and lower guide pillars 20, 20 are fastened with bolts and nuts, but the manner in which the guide pillars 20 are connected is not particularly limited.

Further, since the guide pillar 20 can be moved up and down by the rack and pinion by driving the motors 18, 18, the guide pillar 20 can be moved up and down to move the float barge 11 in a water area such as brackish water where the water depth changes over time. and the undercarriage 13, it is possible to continue dredging while responding to changes in water depth over time.

Above, the main configuration of the underwater bulldozer 10 according to one embodiment of the present invention has been described in detail. 30 are provided. By arranging the hoisting device 30, it is possible to save labor during the operation of inserting the guide pillar 20 into the guide pillar insertion opening 16 and during the transportation operation.

Although the embodiment of the underwater bulldozer of the present invention has been described in detail above, it should not be construed as substantially limiting the technical idea of the present invention. By connecting a plurality of guide pillars 20, the underwater bulldozer 10 according to one embodiment of the present invention can self-propell on the bottom of the water with the undercarriage 13 even in a deep water area. However, in the underwater bulldozer of the present invention, by separately installing an underwater propulsion device such as a screw, the depth of the water can be made deeper, such as a water area where the undercarriage 13 does not reach the bottom of the water or a water area where dredging is unnecessary. can be moved.

Further, the guide pillar of the underwater bulldozer of the present invention is not limited to a rectangular tubular shape, and may be, for example, a cylindrical shape. It can be implemented with improvements, changes or additions.

10: Underwater bulldozer 11: Float barge 12: Earth removal plate 13: Lower travel device 15: Driver's cab 16: Guide pillar insertion port 17: Pinion gear 18: Motor 19: Rake 20: Guide pillar 23: Rack 24: Guide roller 30: Lifting device

Claims (4)

a float barge;
a lower traveling device having a blade in front;
connecting the float barge and the undercarriagepluralguide pillar and
an operator's cab arranged on the float barge;
a guide pillar insertion opening disposed substantially in the center of the float barge;
comprising
plural said guide pillarconnecting or separating from each otherby,An underwater bulldozer characterized in that the dimension between the float barge and the undercarriage is adjustable. The guide pillar has a square tubular shape,
A pair of side wall outer surfaces of the guide pillar is provided with a rack along the longitudinal direction of the side wall outer surface,
2. An underwater bulldozer according to claim 1, wherein a pair of motors provided with pinion gears meshing with said rack are disposed facing each other on the periphery of said guide pillar insertion opening. 3. An underwater bulldozer according to claim 1, wherein a device for lifting said guide pillar is provided on said float barge. 4. An underwater bulldozer according to any one of claims 1 to 3, wherein said float barge is provided with an underwater propulsion device.

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