JP2012149516A - Water surface cleaning device, clamshell bucket for water surface cleaning, and water surface cleaning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water surface cleaning device, a clamshell bucket for water surface cleaning, and a water surface cleaning method capable of efficiently removing rubbles or the like floating on a water surface.SOLUTION: A water surface cleaning device 1 is for removing rubbles 3 or the like floating on a surface of water 2, and a clamshell bucket 20 for water surface cleaning capable of discharging the water 2 seized together with the rubbles 3 or the like to the outer side in a seized state is attached to a movable crane or backhoe 10. Also, the clamshell bucket 20 for water surface cleaning is configured so as to discharge the water 2 seized together with the rubbles 3 or the like to the outer side in the seized state. Further, in the water surface cleaning method, the rubbles 3 or the like after the water is discharged from the inside of the clamshell bucket 20 for water surface cleaning are pulled up by the movable crane or the backhoe 10.

Description

  The present invention relates to a water surface cleaning device, a water surface cleaning clamshell bucket, and a water surface cleaning method for removing driftwood, debris, and the like floating on the water surface.

  After the typhoon has passed, a large amount of driftwood and debris (hereinafter referred to as debris, etc.) that have flowed from upstream rivers accumulate on the surface of the storage dam. Conventionally, in order to remove these rubble and the like from the water surface, these rubble and the like have been scooped up using a mobile crane. More specifically, two wire ropes that can be rolled up and down individually are installed on a mobile crane, and the left and right ends of the basket are fixed to the lower ends of the two wire ropes. The rubble was scooped up while manipulating the scooping basket up and down and left and right.

  On the other hand, as a mobile crane, a crawler type mobile crane for excavation of earth and sand having a clamshell bucket installed at the tip of the crane is known. This crawler type mobile crane is designed to run on crawlers (track belts, caterpillars) in order to smoothly move on rough terrain such as construction sites.

  For example, in the crawler type mobile crane described in Patent Document 1, one of two wire ropes hanging from the tip of an expanding and contracting boom is fixed to a clamshell bucket, and the clamshell bucket is moved vertically. The other one is used to open and close the left and right bucket portions of the clamshell bucket. Moreover, the crawler type vehicle of patent document 2 is what is called a "backhoe", and bends the arm of several joints using the hydraulic unit provided in the main body. A clamshell bucket for earth and sand excavation is attached to the tip of this arm, and the left and right bucket parts are opened and closed by hydraulic pressure on the vehicle side.

  Clamshell buckets used for excavating earth and sand are also generally known. For example, the clamshell buckets described in Patent Document 1 (particularly refer to FIG. 2) and Patent Document 2 (particularly refer to FIG. 2) are for performing excavation work in deep holes, and can be opened and closed to the left and right. In the state where the bucket portion is closed (the state where the earth and sand are grabbed up), the inner side portion and the lower portion are sealed. Thereby, it has the structure where the grabbed earth and sand do not spill and fall to the lower side of a bucket part.

JP 2003-267661 A JP 2002-371585 A

  However, in the above-described apparatus and method for scooping up debris and the like with a scoop basket, the two wire ropes must be skillfully operated individually, so that even a skilled worker is difficult to operate and the work efficiency is poor. For this reason, it takes time for the removal and collection work, and the work period must be secured for several weeks.

  Moreover, even when using the crawler type mobile crane described in Patent Document 1, it is necessary to operate the two wire ropes to operate the vertical position and opening / closing of the clamshell bucket. In particular, with conventional wheel cranes, the clamshell bucket could be lowered by its own weight to lower the clamshell bucket, and the position could be determined by brake operation.However, in recent years, the function of dropping by its own weight has been abolished for safety reasons. It takes time and effort. Therefore, the above method of operating two wire ropes cannot be said to have good operability.

  Moreover, when the clamshell bucket for earth and sand excavation described in Patent Document 1 and Patent Document 2 is used for water surface cleaning work, the inside of the bucket is almost sealed while grabbing the debris, etc. The water in the reservoir dam will be picked up (pumped) together. At this time, even if a small amount of water is discharged from the meshing gap between the left and right bucket parts, it is not a gap intended for drainage, so that most of the water remains in the bucket when it is grabbed. Become. Therefore, more power than necessary is required to pull up debris and the like, which is inefficient. In addition, in order to collect only rubble and the like, a process or facility for removing the water that is seized to separate the rubble and the like from water is required. For this reason, work is wasted.

  Furthermore, the clamshell bucket for excavating earth and sand described above has a structure in which the inside of the clamshell bucket is sealed in the gripped state, so it is difficult to pick up long debris exceeding the width of the clamshell bucket. It was.

  On the other hand, water storage dams are built on undulating land such as mountainous areas. Therefore, the mobile crane cannot be moved close to the water surface of the water storage dam, and often has to be stopped at a position away from the water surface of the water storage dam in the height direction or in the horizontal direction. For this reason, since the distance from the mobile crane to the water surface is very long, using a backhoe like Patent Document 2 requires a particularly long arm, which is not realistic.

  Furthermore, although a mobile crane may work while appropriately moving a working place away from the water surface, a crawler type vehicle such as Patent Document 1 or Patent Document 2 cannot freely travel on public roads. Can not move quickly, depending on the situation.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a water surface cleaning device, a water surface cleaning clamshell bucket, and a water surface cleaning method capable of more efficiently removing debris floating on the water surface. Is to provide.

In order to solve the above-described problems, the present invention provides a water surface cleaning device for removing debris floating on the water surface, and grips the water that has been grabbed together with the debris by a mobile crane or a backhoe. In this state, a clamshell bucket for water surface cleaning that can be drained outside is attached.
According to this configuration, rubble and the like can be picked up more easily. In addition, the clamshell bucket is not lifted while the water that has been grabbed is retained inside the bucket.

The water surface cleaning clamshell bucket is provided with a bucket portion that opens and closes to the left and right, and a hydraulic cylinder for opening and closing the left and right bucket portions, and a hydraulic unit for supplying hydraulic oil to the hydraulic cylinder Is arranged at a position closer to the water surface than the mobile crane or backhoe.
According to this configuration, the debris and the like can be more reliably grasped using the hydraulic pressure, and the operator can operate the hydraulic unit at a position close to the water surface at the work site. Moreover, the operation | work which opens and closes a clamshell bucket becomes unnecessary by operation of the wire rope of a mobile crane.

Furthermore, a wheel crane, a truck crane, a rough terrain crane, an all terrain crane, or a vehicle-mounted truck crane that can run on a public road can be used as the mobile crane of the water surface cleaning device.
According to this configuration, the crane can be appropriately moved using the public road in accordance with the removal work of rubble and the like.

Also, a bucket portion that opens and closes to the left and right of the water surface cleaning clamshell bucket is constituted by a plurality of vertical beams and horizontal beams, and the water is drained from a lattice hole formed by combining these vertical beams and horizontal beams in a substantially lattice shape. You may make it do.
According to this configuration, it is possible to discharge only water from the lattice holes while holding the rubble and the like, and hold the rubble and the like as they are by the substantially lattice-shaped vertical and horizontal beams.

Furthermore, in the water surface cleaning device, a side end portion in the width direction of the bucket portion may be opened.
According to this configuration, it is possible to grab long debris or the like exceeding the width of the clamshell bucket in a state of protruding from the openings at both ends of the bucket portion.

On the other hand, it is a clamshell bucket for water surface cleaning for removing debris floating on the water surface, and configured to be able to drain the water grabbed together with the debris etc. to the outside of the bucket portion in the grasped state. It is characterized by that.
According to this configuration, the debris and the like can be picked up more easily by using the clamshell bucket for water surface cleaning. Further, the clamshell bucket is not lifted while water is kept inside the bucket.

In addition, the clamshell bucket for water surface cleaning has a bucket portion that opens and closes to the left and right, which is composed of a plurality of vertical beams and horizontal beams, and drains the water from lattice holes formed by combining these vertical beams and horizontal beams in a substantially lattice shape. You can also
According to this configuration, it is possible to drain only water from the lattice holes while holding the rubble and the like, and hold the rubble and the like as they are with the vertical and horizontal beams.

Furthermore, the clamshell bucket for water surface cleaning may have an open side end in the width direction of the bucket portion.
According to this configuration, it is possible to grab long debris or the like exceeding the width of the clamshell bucket in a state of protruding from the openings at both ends of the bucket portion.

Also, the clamshell bucket for water surface cleaning, when a pressing force is applied to the vertical beam due to the weight of the gravel or the like that has been grabbed, the vertical beam is displaced in the width direction with respect to the horizontal beam and the pressing force is reduced. It can also be configured to escape.
According to this configuration, it is possible to prevent the vertical beam or the horizontal beam from being deformed or distorted due to the weight of debris or the like.

On the other hand, it is a water surface cleaning method for removing debris floating on the water surface, and water surface cleaning that can drain the water grabbed together with the debris to a mobile crane or backhoe in the gripped state. The clamshell bucket is attached, the rubble floating on the water surface is picked up by using the water surface cleaning clamshell bucket, and the rubble after being drained from the water surface cleaning clamshell bucket is moved. It is characterized by pulling up with a crane or backhoe.
According to this configuration, rubble and the like can be picked up more easily. In addition, the clamshell bucket is not lifted while the water that has been grabbed is retained inside the bucket.

In the water surface cleaning method, the water surface cleaning clamshell bucket is provided with a bucket portion that opens and closes left and right and a hydraulic cylinder that opens and closes the left and right bucket portions, and supplies hydraulic oil to the hydraulic cylinder. The hydraulic unit is arranged closer to the water surface than the mobile crane or the backhoe, and the hydraulic cylinder and the hydraulic unit are connected by an oiling pipe to open and close the water surface cleaning clamshell bucket hydraulically. May be.
According to this configuration, the debris and the like can be more reliably grasped using hydraulic pressure. In addition, the operator can operate the hydraulic unit at a position close to the water surface on which rubble or the like is accumulated. Furthermore, the operation | work which opens and closes a clamshell bucket becomes unnecessary by operation of the wire rope of a mobile crane.

  In the water surface cleaning device according to the present invention, a water crane for cleaning the water surface, which can drain the water in the gripped state, is attached to the mobile crane or the backhoe. Since the work can be easily performed as compared with the case where the removal work is performed using a squirrel cage as in the technology, the water surface cleaning work can be efficiently performed in a short time. In addition, since the clamshell bucket is not lifted while the gripped water is kept inside the bucket, only debris and the like can be efficiently removed and collected from the water surface. Furthermore, since only rubble etc. can be pulled up, useless lifting power is not required as compared with the case where the rubble is pulled up together with the grabbed water. Therefore, the work can be performed more efficiently than before, and the work period (work period) can be shortened.

  Further, in the clamshell bucket for water surface cleaning and the water surface cleaning method according to the present invention, the water surface cleaning work can be performed because the grabbed water can be drained and only debris and the like can be removed and recovered from the water surface, as described above. Can be performed efficiently. Therefore, the work period (construction period) can be shortened compared to the conventional case.

It is a whole schematic diagram which shows the state which installed the water surface cleaning apparatus which concerns on embodiment of this invention in the lake shore of a water storage dam. It is a side view of the clamshell bucket for water surface cleaning which concerns on embodiment of this invention, Comprising: The state which closed the bucket part on either side is shown. It is a side view which shows the state which opened the bucket part on either side of the clamshell bucket for water surface cleaning shown in FIG. It is a front view of the clamshell bucket for water surface cleaning shown in FIG. It is a schematic diagram which shows the state which grabbed debris etc. with the clamshell bucket for water surface cleaning.

  Hereinafter, a water surface cleaning device 1, a water surface cleaning clamshell bucket 20, and a water surface cleaning method according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall schematic diagram of a water surface cleaning apparatus 1 according to an embodiment of the present invention.

  Note that the terms “driftwood and rubble”, “rubble, etc.” used in this specification are, for example, tree trunks, branches, leaves, roots, broken pillars, walls, roofs, etc. of buildings. In addition, it shall include all items collectively referred to as garbage floating on the lake surface.

  In addition, the term “mobile crane” as used in this specification includes all cranes that can move freely (excluding fixed cranes), such as crane ships, wheel cranes, truck cranes, rough cranes, and the like. There are terrain cranes (rough terrain cranes), all terrain cranes, crawler type cranes, vehicle-mounted truck cranes (UNIC (registered trademark)), heavy vehicles, and the like.

  In addition, the “backhoe” as used in the present specification refers to an object that can be moved by a crawler and that draws up one side bucket while scooping up an earth and sand while bending an arm having a plurality of joints. For example, a hydraulic excavator, Yumbo (registered trademark), and the like are included in the “backhoe”. The above-described one-side bucket for earth and sand mining is detachably attached to the tip of the arm. In the present invention, the one-side bucket is removed, and the water surface cleaning clamshell bucket 20 is attached in a manner to suspend through a pin, and the water surface cleaning clamshell bucket 20 is moved up and down. A hydraulic cylinder 21 (details will be described later) for opening and closing the water surface cleaning clamshell bucket 20 is mounted separately from the one mounted on the backhoe.

  In the following embodiments, a rough terrain crane 10 that can freely travel on public roads will be described as an example of a “mobile crane or backhoe”.

  On the lake surface 2 (water surface) of the dam for water storage, driftwood and rubble (hereinafter referred to as rubble etc. 3) settled from the upstream after the typhoon passed. As shown in FIG. 1, such debris 3 accumulates on the lake shore 4 a located on the leeward side.

  In addition, the dam is surrounded by a lake quay wall 4 (or a cliff using natural terrain) having a height difference, and is constructed so as to be able to store water up to a predetermined water level even if the water increases. Therefore, the water level during normal times is lower than the water level when the typhoon passes and is considerably below the hill 5. Under such circumstances, a water surface cleaning device 1 for removing and collecting debris 3 is installed.

  As shown in FIG. 1, the water surface cleaning device 1 includes a rough terrain crane 10 installed on a hill 5 and a water surface cleaning clam shell attached to a tip hook 16 that hangs down from the tip of a boom 11 of the rough terrain crane 10. The bucket 20 is composed of a hydraulic unit 40 used for opening and closing the clamshell bucket.

  The rough terrain crane 10 is a mobile crane that can be driven by four (or more) wheels 10a, and is different from a crawler type mobile crane in that it can run on a general public road. ing. The rough terrain crane 10 is disposed on a hill 5 above the lake surface 2 and is fixed to the hill 5 in a state where it is lifted up by outriggers 10b provided on the front, rear, left and right sides of the vehicle.

  The hill 5 is appropriately determined in consideration of the distance to the lake surface 2 and a space where the rough terrain crane 10 can be stopped and fixed. Further, if necessary, the rough terrain crane 10 is moved to another favorable condition for work.

  The boom 11 is expanded and contracted by the hydraulic unit provided in the rough terrain crane 10 or the power of the engine. The direction of the boom 11 can be freely adjusted by turning a swivel (not shown) of the rough terrain crane 10. The length of the boom 11, the number of boom stages, the offset angle, the crane capacity, and the like are determined according to the situation at the work site, and an optimal vehicle that satisfies these conditions is selected.

  A pulley 12 for hanging a wire rope 13 is attached to the tip of the boom 11, and the wire rope 13 is suspended downward from the pulley 12. The wire rope 13 is wound up by a hoist winch 14 provided in the main body of the rough terrain crane 10. In the present embodiment, the number of wire ropes 13 is composed of one for hanging a water surface cleaning clamshell bucket 20 to be described later. Therefore, the operator in the driver's seat 15 (cab) only needs to move the single wire rope 13 up and down, and driving is easy.

As shown in FIGS. 2 to 4, a water surface cleaning clamshell bucket 20 is attached to the tip hook 16 of the wire rope 13.
FIG. 2 is a side view of the clamshell bucket for water surface cleaning, showing a state where the left and right bucket portions are closed. 3 is a side view showing a state in which the left and right bucket parts are opened from the state of FIG. 2, and FIG. 4 is a front view of the clamshell bucket for water surface cleaning. Further, FIG. 5 shows a state in which the debris 3 or the like 3 is grasped by the clamshell bucket 20 for water surface cleaning and pulled up above the water surface 2.
Note that the “front-rear” and “left-right” directions used in the following are directions as viewed from the front side of the sheet of FIG. 2, and “width direction” is the depth direction of the sheet of FIG. 2 (left-right direction of the sheet of FIG. 4). It shall be said.

  As shown in FIGS. 2 and 3, the water surface cleaning clamshell bucket 20 includes a left bucket portion 23L and a right bucket portion 23R, and a hydraulic cylinder 21 provided above the left and right bucket portions 23L and 23R. It is comprised with the two opening-and-closing arms 24 and 24 which comprise a link mechanism.

  2 and 3, the hydraulic cylinder 21 includes a cylinder rod 22 that is pressed by hydraulic pressure, and the cylinder rod 22 is movable along the extending direction (vertical direction) of the hydraulic cylinder 21. It is configured. An opening / closing seat 26 is provided at the lower end of the cylinder rod 22. Furthermore, bucket part rotation shafts 27L and 27R are provided symmetrically on the left and right sides of the opening / closing seat part 26, respectively. A right end portion of the upper support beam 28L, which is a part of the left bucket portion 23L, is rotatably connected to the left bucket portion rotation shaft 27L, and a right bucket portion rotation shaft 27R is connected to the right bucket portion rotation shaft 27L. The left end portion of the upper support beam 28R that is a part of the bucket portion 23R is rotatably connected.

  As shown in FIGS. 2 and 3, the left and right open / close arms 24 are pivotally connected to the main body of the hydraulic cylinder 21 via a pivot shaft 25 a. The lower end of the open / close arm 24 is rotatably connected to the upper support beam 28L and the upper support beam 28R via a rotation shaft 25b. The open / close arms 24, 24 are formed in an isosceles triangle shape having the upper pivot shaft 25a as a vertex when viewed from the front side shown in FIG. To increase rigidity. In addition, two pivot shafts 25b and 25b are provided coaxially at the two apex portions below the isosceles triangle, respectively.

The hydraulic cylinder 21 pushes the cylinder rod 22 upward when hydraulic oil is supplied from a hydraulic unit 40, which will be described in detail later, through an oil supply pipe 41. As a result, the left and right bucket portions 23L and 23R are held closed (gripped state) (see FIG. 2).
On the other hand, when the hydraulic oil is released from the state of FIG. 2, the hydraulic cylinder 21 pushes down the cylinder rod 22 downward (in the direction of arrow DN in FIG. 2). As a result, as shown in FIG. 3, the open / close arms 24, 24 are pulled upward, and the left bucket portion 23L and the right bucket portion 23R are rotated around the left and right bucket portion rotation shafts 27L, 27R by the link mechanism. It moves and opens in the direction of arrow L and arrow R in FIG.
Further, when hydraulic oil is supplied again from the state of FIG. 3, the bucket portions 23L and 23R are closed by an operation opposite to the above-described opening operation.

  The structures of the left bucket portion 23L and the right bucket portion 23R are configured to be bilaterally symmetric as shown in FIGS. Therefore, in the following description, only the structure of the left bucket portion 23L will be described, and the description of the right bucket portion 23R will be omitted.

  As shown in FIGS. 2 to 4, an upper beam 29 that extends over the entire length of the width dimension L1 of the left bucket portion 23L is provided at the left end portion of the upper support beam 28L. Further, as shown in FIG. 4, an outer frame 30, a reinforcing vertical beam 32, and an inner vertical beam 33 (collectively referred to as a vertical beam) are attached to the upper beam 29 at intervals in the width direction. ing.

  The shape of the outer frame 30, the reinforcing vertical beam 32, and the inner vertical beam 33 as viewed from the side surface (the shape as viewed from the front of FIG. 2) gradually increases toward the inner center from the upper beam 29 toward the lower side. It is formed in an arcuate shape that curves in a straight line. The lower ends S of these vertical beams (the outer frame 30, the reinforcing vertical beam 32, and the inner vertical beam 33) coincide with the left and right lower ends S in a state where the water surface cleaning clamshell bucket 20 is closed (the state shown in FIG. 2). Or it is formed so that it may overlap a little. Further, the lower end S is formed in a shape with a sharp tip so that the lower end S can easily enter the debris 3 when the debris 3 is gripped.

  As shown in FIG. 4, the outer frame 30 is disposed at both left and right ends of the left bucket portion 23 </ b> L. This outer frame 30 constitutes an outer shell on both sides of the left bucket portion 23L, and increases the plate thickness to increase rigidity compared to other beams (reinforcing vertical beam 32, inner vertical beam 33). ing.

  A plurality of reinforcing longitudinal beams 32 are provided with a space between the two outer frames 30. The reinforcing vertical beam 32 is thicker than the inner vertical beam 33 and secures the strength inside the left bucket portion 23L. In addition, a plurality of inner vertical beams 33 are provided with an interval between the outer frame 30 and the reinforcing vertical beams 32 and between adjacent reinforcing vertical beams 32. The inner vertical beam 33 functions so as to hold the rubble 3 and the like 3 that have been picked up.

  Further, in a mode of passing through the outer frame 30, the reinforcing vertical beam 32, and the inner vertical beam 33, the horizontal beam 31 (including the upper beam 29 and the horizontal beam) extending over the entire length in the width direction of the left bucket portion 23L. Generically). As shown in FIGS. 2 and 3, a plurality of the horizontal beams 31 are provided at intervals along the arcuate shape of the outer frame 30, the reinforcing vertical beam 32, and the inner vertical beam 33. Similar to the inner vertical beam 33 described above, the horizontal beam 31 functions to hold the rubble 3 and the like 3 that have been gripped.

  These vertical beams (outer frame 30, reinforcing vertical beam 32, inner vertical beam 33) and horizontal beams (upper beam 29, horizontal beam 31) are combined in a substantially lattice shape when viewed from the front, as shown in FIG. Each of them is fixed by welding, but the horizontal beam 31 and the reinforcing vertical beam 32 and the horizontal beam 31 and the inner vertical beam 33 are not welded. More specifically, only the round bar-shaped horizontal beam 31 is inserted and fitted into the through holes formed in the reinforcing vertical beam 32 and the inner vertical beam 33, and the reinforcing vertical beam 32 and the inner vertical beam 33 are connected to the horizontal beam. 31 can be moved in the width direction. This is because even if a load (pressing force) is applied to the reinforcing vertical beam 32 and the inner vertical beam 33 due to the weight of the debris 3 and the like that has been picked up, the reinforcing vertical beam 32 and the inner vertical beam 33 are displaced in the width direction. This is to release the load (pressing force).

  Further, by combining the vertical beam and the horizontal beam in a substantially lattice shape, a plurality of lattice holes 34 are formed between the adjacent vertical beam and the horizontal beam. As shown in FIGS. 4 and 5, the lattice holes 34 are uniformly formed in the width direction and the vertical direction of the left bucket portion 23L. Even if the debris 3 is picked up at any part in the width direction, The water 2 that has been grabbed is discharged from one of the lattice holes 34 to the outside of the left bucket portion 23L.

  Further, as shown in FIG. 2 and FIG. 3, the side opening 35 is formed on the side surface portion in the width direction of the left bucket portion 23 </ b> L by forming the above-described outer frame 30 into a curved arc shape. Yes. This side opening 35 functions as a drainage port through which the water 2 that has been grabbed is discharged, and, as shown in FIG. 5, rubble or the like 3 (particularly, a length L2 exceeding the width dimension L1 of the left bucket portion 23L). A long driftwood 3a or a long object such as a pillar of a building) is picked up in such a manner as to protrude from the side opening 35. Therefore, even the debris 3 having a length L2 exceeding the width dimension L1 can be easily picked up by the clamshell bucket 20 for water surface cleaning.

  The number of the reinforcing vertical beams 32 and the inner vertical beams 33 and the number of the horizontal beams 31 can be appropriately determined according to the width dimension L1 of the clamshell bucket 20 for water surface cleaning. Further, the interval between the adjacent vertical beams and the interval between the horizontal beams can be appropriately determined according to the size, weight, type, and the like of the debris 3 to be picked up. Furthermore, a net (not shown) may be attached to the lattice holes 34 in order to remove even fine dust.

  Actually, the width L1 (see FIG. 4 or 5) of the clamshell bucket 20 for water surface cleaning is about 3000 mm, the dimension L3 in the left-right direction (see FIG. 2) is about 1500 to 1700 mm, and the height L4 (see FIG. 2). ) Was determined to be about 1000 mm, and as a result of trial manufacture and test, it was confirmed that it had a function sufficient to grab rubble 3 and the like, and that removal work could be performed efficiently.

  The above-mentioned dimensions L1, L3, and L4 are larger than the dimensions of a clamshell bucket for general earth and sand excavation. Thereby, more debris 3 etc. can be efficiently picked up at once. Further, since the debris 3 is lighter than the earth and sand, even if a large amount of the debris 3 is pulled up at once by the water surface cleaning clamshell bucket 20 having a large outer dimension, the lift of the crane is not affected. Furthermore, the clamshell bucket 20 for water surface cleaning is lighter than the clamshell bucket for earth and sand mining because a plurality of lattice holes 34 are formed, so even if the outer dimensions are increased, the lifting weight is not affected. . Of course, these dimensions L1, L3, and L4 can be made smaller than the outer dimensions of a general clamshell bucket for excavation of earth and sand.

  On the other hand, returning to FIG. 1, the hydraulic unit 40 is disposed on the shore 6 near the water surface 2 where the debris 3 and the like float. The hydraulic unit 40 is connected to the hydraulic cylinder 21 via an oil supply pipe 41, and the cylinder rod 22 is moved up and down by supplying hydraulic oil to the hydraulic cylinder 21.

  The shore 6 can be arbitrarily selected as long as it is closer to the water surface 2 than the rough terrain crane 10 and has a space where the hydraulic unit 40 can be installed. In particular, the shore 6 is preferably a place where an operator who operates the hydraulic unit 40 can visually confirm the water surface 2. That is, by operating the hydraulic pressure while confirming the opening and closing of the water surface cleaning clamshell bucket 20 at a position close to the water surface 2, the working efficiency is improved as compared with the case where the crane operator performs the opening and closing operation at a position where the crane operator cannot visually confirm. be able to. Further, the operator of the shoreside 6 opens and closes the water surface cleaning clamshell bucket 20 so that the operator of the rough terrain crane 10 can only move the water surface cleaning clamshell bucket 20 up and down. Only the operation of the wire rope 13) is performed. Therefore, the operation of the wire rope 13 is simplified.

  Further, compared to the case where hydraulic oil is supplied using a hydraulic unit permanently installed in the main body of the rough terrain crane 10, the lubrication pipe 41 can be configured to be shorter and the capacity of the hydraulic pump in the hydraulic unit 40 can be reduced. Can be kept small.

According to the water surface cleaning apparatus 1 according to the embodiment of the present invention, a clamshell bucket for water surface cleaning that can drain the water 2 gripped together with the debris 3 to the rough terrain crane 10 in the gripped state. 20 is attached, so that the work can be easily performed as compared with the case where the removal work is performed using a scoop basket as in the prior art, so that the water surface can be efficiently cleaned in a short time. .
In addition, since the clamshell bucket 20 for cleaning the water surface is not lifted while the water 2 thus seized is held inside the left and right bucket portions 23L, 23R, only the debris 3 can be efficiently removed and collected from the water surface. it can. Therefore, the water surface cleaning work can be performed efficiently.
Furthermore, since only the debris 3 can be pulled up, unnecessary power is not required as compared with the case of pulling up with the water 2 that has been grabbed.
Therefore, the work can be performed more efficiently than before, and the work period (work period) can be shortened.

The clamshell bucket 20 for water surface cleaning is provided with a hydraulic cylinder 21 for opening and closing the left and right bucket portions 23L, 23R. A hydraulic unit 40 for supplying hydraulic oil to the hydraulic cylinder 21 is provided with a rough terrain. Since it is arranged at a position closer to the water surface 2 than the crane 10, it is possible to grip the debris 3 more reliably and efficiently using hydraulic pressure compared to the conventional method of scooping with a scoop basket. It becomes like this.
Further, since the hydraulic unit 40 can be operated at a position close to the water surface 2, an operator can perform work while visually checking the debris 3 or the like. Therefore, the water surface cleaning operation can be performed more efficiently. Furthermore, the operator of the rough terrain crane 10 only needs to perform the operation of moving the water surface cleaning clamshell bucket 20 up and down (only the operation of one wire rope 13). Therefore, operation of the wire rope 13 can be performed easily.

  Furthermore, since the rough terrain crane 10 capable of self-propelled on a public road is used as the mobile crane, the work can be performed by appropriately moving to a place (the hill 5) suitable for the water surface cleaning work. As a result, it takes less time to move to the site, and the debris 3 and the like 3 can be removed more efficiently.

  Further, bucket portions 23L and 23R that open and close to the left and right of the water surface cleaning clamshell bucket 20 are formed by a plurality of vertical beams (outer frame 30, reinforcing vertical beam 32, inner vertical beam 33) and horizontal beams (upper beam 29, horizontal beam 31). Since the water 2 is drained from the lattice holes 34 formed by combining the longitudinal beams (30, 32, 33) and the lateral beams (29, 31) in a substantially lattice shape, Only the water 2 is discharged from the lattice hole 34 in the gripped state, and the debris 3 or the like can be held as it is by the vertical beams (30, 32, 33) and the horizontal beams (29, 31) assembled in a substantially lattice shape. it can. In addition, since the lattice holes 34 are uniformly formed on the entire surface of the left bucket portion 23L and the right bucket portion 23R, no matter what portion of the width direction the gravel or the like 3 is picked up, The lattice holes 34 are discharged to the outside of the left bucket portion 23L. Therefore, drainage is reliably and promptly performed, and only the debris 3 and the like can be removed from the water surface 2, thereby further improving the work efficiency.

  Furthermore, the water surface cleaning clamshell bucket 20 is provided with side openings 35 at the side ends in the width direction of the left and right bucket portions 23L, 23R, so the width dimension L1 of the water surface cleaning clamshell bucket 20 is The debris 3 or the like 3 having a length L2 exceeding can be grasped while being protruded from the side openings 35 at both ends of the bucket portions 23L and 23R. Therefore, the debris 3 (particularly, the driftwood 3a having a long total length L2) can be grasped more reliably.

  Further, when a pressing force is applied to the reinforcing vertical beam 32 and the inner vertical beam 33 due to the weight of the gravel 3 etc. that has been picked up, the reinforcing vertical beam 32 and the inner vertical beam 33 are displaced in the width direction L1 with respect to the horizontal beam 31. Thus, the pressing force can be released, so that the reinforcing vertical beam 32 and the inner vertical beam 33 or the horizontal beam 31 can be prevented from being deformed or distorted.

On the other hand, in the water surface cleaning method according to the embodiment of the present invention, the water clam shell bucket 20 for water surface cleaning that can drain the water 2 gripped together with the debris 3 to the rough terrain crane 10 in the gripped state. The debris 3 floating on the water surface 2 is picked up by using the clamshell bucket 20 for water surface cleaning, and the debris 3 drained from the clamshell bucket 20 for water surface cleaning is pulled up by the rough terrain crane 10. Therefore, the work can be performed more efficiently than the conventional work of scooping up with scoop.
Further, the crane performance of the rough terrain crane 10 only needs to have a rating that only raises the clamshell bucket 20 for water surface cleaning and the debris 3 and the like, compared with the case where the water 2 that has been grabbed is pulled up together. The required power is reduced. Therefore, the small rough terrain crane 10 can be used.
Furthermore, the operator of the rough terrain crane 10 need only perform the up / down movement of the clamshell bucket 20 for water surface cleaning, and does not require a skilled maneuvering technique and can be easily operated.

  As mentioned above, although the water surface cleaning apparatus and the clamshell bucket for water surface cleaning which concern on embodiment of this invention were described, this invention is not limited to above-mentioned embodiment, Various based on the technical idea of this invention Variations and changes can be made.

  For example, in the present embodiment, the removal of rubble and the like 3 accumulated on the lake surface 2 of the water storage dam is described, but it is not limited to the removal work at the water storage dam. For example, in order to remove the debris 3 that has flowed to the river mouth and accumulated, or the debris 3 that has been launched and deposited along the coastline, the water surface cleaning device 1 of the present invention, the clamshell bucket 20 for water surface cleaning, Water surface cleaning methods can also be used.

  Moreover, in this Embodiment, although the rough terrain crane 10 excellent in the mobility which can drive | work a public road is used as a mobile crane, it is not limited to this. For example, instead of the rough terrain crane 10, a wheel crane, a truck crane, an all terrain crane, a vehicle-mounted truck crane or the like that can freely travel on public roads may be used.

Moreover, when working with a crane fixed at one place, the water surface cleaning device can be configured by using a crawler type crane that cannot travel on a public road instead of the rough terrain crane 10. In this case, the crawler type crane is transported to the work place by a transportation truck or the like.
Furthermore, when the distance between the mobile crane 10 and the water surface 2 is short (when a long arm is not required), the mobile vehicle such as a so-called “backhoe” that operates the arm with hydraulic pressure is used for water surface cleaning. The clamshell bucket 20 can be attached and used. In this case, the method of supplying hydraulic oil by providing the hydraulic unit 40 described in the present embodiment on the shore 6 can also be used, but in addition, using the hydraulic unit equipped in the mobile crane 10, The bucket parts 23L and 23R may be opened and closed. This is because the distance to the water surface 2 is short and it is easy for the operator to visually confirm the debris 3 and the like.

  As described above, an optimal mobile crane or backhoe can be appropriately selected and used in accordance with the location of the site.

Further, as a mobile crane, in addition to a crane traveling on the ground, a water surface cleaning clamshell bucket 20 can be attached to a crane ship capable of traveling on a lake surface.
Also by these structures, the removal work period can be shortened by efficiently removing the debris 3 etc. floating on the water surface 2.

  Furthermore, in this embodiment, the clamshell bucket 20 for water surface cleaning is combined in a substantially lattice shape with vertical beams (outer frame 30, reinforcing vertical beam 32, inner vertical beam 33) and horizontal beams (upper beam 29, horizontal beam 31). However, any structure may be used as long as water inside the bucket can be drained to the outside in a state where the debris 3 or the like 3 is grasped (the water surface cleaning clamshell bucket 20 is closed). For example, the water inside the bucket can be drained to the outside only by providing the side opening 35 at the side end in the width direction of the water surface cleaning clamshell bucket 20. However, since the water located in the central portion in the width direction inside the bucket is not easily drained, it is preferable to use a combination of the bucket portions 23L and 23R in a substantially lattice shape in order to improve drainage efficiency.

  In addition to the structure combined in a substantially lattice shape, a clamshell bucket for excavation of earth and sand is diverted to form a plurality or one drainage hole in the whole or a part of the bucket part, and drainage from this hole to the outside. You may make it do. In other words, anything having a structure that can drain the water inside the bucket to the outside is included in the scope of the technical idea of the present invention.

  Furthermore, in the present embodiment, the vertical beams (outer frame 30, reinforcing vertical beam 32, inner vertical beam 33) and horizontal beams (upper beam 29, horizontal beam 31) of the clamshell bucket 20 are combined in a substantially lattice shape. As this substantially lattice shape, it can be considered to be combined in various modes. For example, a rectangular lattice hole 34 is formed as in the present embodiment, a plurality of beams are obliquely combined to form a diamond-shaped lattice hole, or a triangular lattice hole is formed. The thing which I did is also considered. A combination of a vertical beam and a horizontal beam arranged so as to form a deformed lattice hole as described above is also included in the “substantially lattice shape”.

DESCRIPTION OF SYMBOLS 1 Water surface cleaning device 2 Lake surface (water surface), water 3 Debris, etc. 3a Driftwood 4 Lake quay 4a Lake shore 5 High ground 6 Shore 10 Rough terrain crane (mobile crane)
DESCRIPTION OF SYMBOLS 10a Wheel 10b Outrigger 11 Boom 12 Boom tip 13 Wire rope 14 Hoist winch 15 Driver's seat 16 Hook 20 Clam shell bucket 21 for water surface cleaning 21 Hydraulic cylinder 22 Cylinder rod 23L Left side bucket part 23R Right side bucket part 24 Open / close arm 25a, 25b Rotation Shaft 26 Opening / closing seat portion 27L, 27R Bucket portion rotation shaft 28L, 28R Upper support beam 29 Upper beam 30 Outer frame 30a Tip of vertical beam 31 Horizontal beam 32 Reinforced vertical beam 33 Inner vertical beam 34 Lattice hole 35 Side opening 40 Hydraulic pressure Unit 41 Lubricating pipe L1 Width of bucket section L2 Overall length of grabbed rubble, etc. L3 Left and right dimensions of clamshell bucket for water surface cleaning L4 Height dimension of clamshell bucket for water surface cleaning S Lower end

On the other hand, it is a clamshell bucket for water surface cleaning for removing debris floating on the water surface, characterized in that water grasped together with the debris etc. can be drained to the outside in the grasped state. To do.
According to this configuration, the debris and the like can be picked up more easily by using the clamshell bucket for water surface cleaning. Also, the clamshell bucket is not lifted while water is kept inside .

Claims (11)

A water surface cleaning device for removing debris floating on the water surface,
A water surface cleaning device, comprising a water crane or a backhoe attached with a clamshell bucket for water surface cleaning capable of draining the water gripped together with the rubble and the like to the outside in the gripped state.   The water surface cleaning clamshell bucket is provided with a bucket portion that opens and closes to the left and right, and a hydraulic cylinder for opening and closing the left and right bucket portions, and a hydraulic unit for supplying hydraulic oil to the hydraulic cylinder, The water surface cleaning device according to claim 1, wherein the water surface cleaning device is disposed at a position closer to the water surface than the mobile crane or the backhoe.   3. The water surface cleaning according to claim 1, wherein the mobile crane is a wheel crane, a truck crane, a rough terrain crane, an all terrain crane, or a vehicle-mounted truck crane capable of traveling on a public road. apparatus.   The bucket portion that opens and closes to the left and right of the water surface cleaning clamshell bucket is constituted by a plurality of vertical beams and horizontal beams, and drains the water from lattice holes formed by combining these vertical beams and horizontal beams in a substantially lattice shape. The water surface cleaning apparatus of Claim 2 or Claim 3 characterized by these.   The water surface cleaning apparatus according to any one of claims 2 to 4, wherein a side end portion in the width direction of the bucket portion is opened. A clamshell bucket for water surface cleaning for removing debris floating on the water surface,
A clamshell bucket for water surface cleaning, wherein water grasped together with the rubble and the like can be drained to the outside of the bucket portion in a grasped state.   It is provided with a bucket part that opens and closes to the left and right, the bucket part is constituted by a plurality of vertical beams and horizontal beams, and the water is drained from lattice holes formed by combining these vertical beams and horizontal beams in a substantially lattice shape The clamshell bucket for water surface cleaning according to claim 6.   The clamshell bucket for water surface cleaning according to claim 7, wherein a side end portion in the width direction of the bucket portion is opened.   When the pressing force is applied to the vertical beam due to the weight of the rubble or the like that has been picked up, the vertical beam is configured to be displaced in the width direction with respect to the horizontal beam to release the pressing force. The clamshell bucket for water surface cleaning according to claim 7 or 8. A water surface cleaning method for removing debris floating on the water surface,
Mounted on a mobile crane or backhoe is a water surface cleaning clamshell bucket that can drain the water that has been grabbed together with the debris and the like to the outside, and the rubble that floats on the water surface is used for the water surface cleaning. A water surface cleaning method characterized by picking up using a clamshell bucket and pulling up the rubble after drained from the inside of the clamshell bucket for water surface cleaning with the mobile crane or backhoe.   The water surface cleaning clamshell bucket is provided with a bucket portion that opens and closes to the left and right and a hydraulic cylinder that opens and closes the left and right bucket portions. 11. The water-cleaning clamshell bucket is hydraulically opened and closed by disposing it closer to the water surface than a crane or a backhoe, connecting the hydraulic cylinder and the hydraulic unit with an oil supply pipe. The water surface cleaning method of description.

Images