JP3044936U - Underwater rubble leveling device - Google Patents

Abstract

(57) [Summary] To provide an underwater rubble leveling device capable of correctly positioning a suspended weight at the center of a shaft and preventing abrasion of a wire supporting the weight. A weight body is provided below a weight body, and a hollow shaft is provided above the weight body. Shaft 16
A small weight that can fall inside is provided, and the small weight is lifted by the wire 27. The wire 27 is inserted through the insertion port 32 of the shaft 16. The insertion port 32 is formed smaller than the cross section of the shaft 16 and is provided at the center position of the shaft 16. Rotating rollers 33, 33, 34,
34 will be provided. When lifting small weight 26 and small weight
When dropping 26, friction of wire 27 is reduced.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an underwater rubble leveling device for leveling rubble poured into water, and more particularly to an underwater rubble leveling device that supports a small weight that can be dropped into a shaft of a weight by a wire.

[0002]

[Problems to be solved by the invention]

 When constructing seawall foundations for harbors and land reclamation work, rubble is injected into the construction site, the top of the rubble is roughly leveled, and the rubble is leveled to the planned height. To build. Conventionally, as a method of leveling the rubble poured into water, a method of dropping a weight on the top end surface of the rubble and leveling the unevenness by the falling energy of the weight is known.

[0003] As a method of leveling rubble using the weight, Japanese Patent Publication No. 56-12652 discloses a weight for consolidation leveling on a top surface of a submerged rubble foundation having a top surface slightly higher than a planned height. Is suspended and pressed, and the height of the top is measured while measuring the height of the top using a scale scale provided at the required part of the consolidation weight and a surveying instrument installed at a fixed point such as an existing caisson. There is known a method of equalizing the consolidation (column 1, lines 14 to 19). However, in the case where the weight is moved up and down to perform the compaction, although the compaction effect is large, there is a problem that the adjustment of the finish is difficult.

Therefore, Japanese Utility Model Laid-Open Publication No. Sho 59-121040 discloses that a lower plate having impact resistance is attached to the bottom in a water-tight manner, has a height higher than the water depth, is suspended, and stands upright on the water bottom. There is known a rubble leveling device including a cylindrical hollow body to be dropped and a weight (the left column in the publication) that falls through the hollow body and hits the lower plate. The weight makes it possible to finish the rubble mound satisfactorily.

In Japanese Patent Application Laid-Open No. 58-58328, a tumbler for rubble leveling is attached to the lower portion of a hollow cylindrical casing, and a weight is vertically movable within the casing. A weight falling type underwater rubble leveling device is provided on the tumbler so as to be able to apply an impact force, and is provided with a lifting device that raises and then drops the weight (column 1, lines 6 to 10). With this device, the weight of the rubble leveling tank is applied to the rubble leveling tank using a weight falling in the casing, and the upper surface of the rubble layer can be leveled at a constant water depth.

In the above-mentioned Japanese Utility Model Application Laid-Open No. Sho 59-121040 and Japanese Patent Application Laid-Open No. 58-58328, the weight is suspended by a wire, and the weight lifted by the wire is dropped freely. When lifting the weight, the wire is pulled out through the upper opening of the casing, and when the weight falls freely, the wire is drawn in through the upper opening. There is a problem that it is easily worn by sliding. In addition, if the wire is not opened after correctly positioning the suspended weight at the center of the hollow body, the weight may hit the inner surface of the hollow body when dropped.

Accordingly, the present invention provides an underwater rubble leveling device capable of correctly positioning the suspended weight at the center of the shaft and preventing abrasion of the wire supporting the weight. The purpose is to do.

[0008]

[Means for Solving the Problems]

 The invention of claim 1 includes a hull provided with a hoist, a weight suspended from the hoist, a weight body provided below the weight, and a hollow shaft provided above the weight body. A small weight that can be dropped in the shaft, and a wire that supports the small weight and is inserted through the insertion opening of the shaft. The small weight is pulled up by the wire, and the pulled small weight is pulled up. The underwater rubble leveling device for hitting the weight body in contact with the bottom of water by dropping the wire is provided with a guide member for guiding the wire at the center of the shaft at the insertion opening, and the guide member is used to guide the wire. Is guided toward the center of the shaft, so that the suspended small weight can be positioned at the center of the shaft.

[0009] In the invention of claim 2, the insertion opening is formed smaller than the inner diameter cross section of the shaft, and the insertion opening is provided on the center side of the shaft. Since it passes through the center of the shaft, the suspended small weight can be positioned at the center of the shaft.

Further, according to the invention of claim 3, the guide member is a cylindrical body crossing the wire, and even if the wire is in contact with the insertion port, the guide member makes point contact with the peripheral surface of the cylindrical body. Is small.

Furthermore, in the invention of claim 4, the cylindrical body is a rotating roller, and even if a wire is in contact with the insertion port, the rotating roller rotates, so that the frictional resistance is further reduced.

Further, in the invention of claim 5, the rotating rollers are provided on all sides, and the wire is inserted between the rotating rollers, and the wires are positioned from all sides by the rotating rollers.

[0013]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIGS. 1 to 11 show an embodiment of the present invention. As shown in FIG. 1, a hoist ship 1 is provided with a hoist 3 at the front center of a hull 2 having a substantially rectangular plane. Is towed to the construction position by a tugboat or the like, and is fixed in position by an anchor or the like (not shown). A weight guide floating frame 4 is provided at the front of the hull 2, and the floating frame 4 is provided at its rear with a substantially cylindrical U-shaped frame rear cylinder 5 which is narrower than the hull 2. The front left and right cylinders 6L and 6R in the front-rear direction are connected to the front side of the rear cylinder 5, and the front sides of these left and right cylinders 6L and 6R are connected to the substantially L-shaped frame front cylinders 7 and 6. 7 are connected to each other, and these front cylinders 7, 7 are connected by an intermediate cylinder 8 for a frame. The left and right front cylinders 7, 7 have front-rear left edge cylinders 7L at their ends. And the right edge cylinder 7R, and the front sides of the left and right edge cylinders 7R and 7L are closed. Each of the cylindrical bodies 5, 6L, 6R, 7, 7, 8 of the floating frame 4 is a floating cylindrical body made of, for example, a steel pipe or the like, and the inside thereof is watertightly assembled using a bolt and nut (not shown) by a flange joint 9. The guide floating frame 4 itself floats on the water surface. Further, at least one water stop plate 10 serving as a water stop member is provided in each of the cylindrical bodies 5, 6L, 6R, 7, 7, and 8, and the inside is partitioned by the water stop plate 10. Further, vertical rods 5A, 5A, 5A are erected on the left and right and the center of the rear tubular body 5, a locking part 5B is provided on the upper part of the vertical rod 5A, and a mounting part 11 is provided on the hull 2 By connecting the locking portion 5B and the mounting portion 11 with a connecting member 12 such as a wire, the guide floating frame 4 is connected to the hull 2 so as to be vertically movable. On the front side of the front cylinders 7, 7 and the intermediate cylinder 8, a left-right guide rod 13 is provided so as to protrude forward, and the guide rod 13 constitutes a weight guide section. Reference numeral 13 has a length substantially equal to the width of the hull 2 described above. The guide rod 13 is made of a steel pipe or the like, and has a convex curved surface 13A on the front side. In the drawing, reference numeral 71 denotes a handrail provided on the guide floating frame 4, and reference numeral 72 denotes a scaffold made of expanded metal or the like.

As shown in FIGS. 5 to 8, a weight 14 suspended by the hoist 3 is provided with a weight body 15 at a lower portion, and a hollow shaft 16 is connected to an upper portion of the weight body 15. The shaft 16 comprises a plurality of pipes 16A, 16B, 16C, 16D, 16E, 16F and 16G. The weight body 15 has a square steel plate 17 at the lower end, a connecting steel pipe 18 fixed to the center of the plate 17, and a steel outer frame plate 19 having a lower part closed. At the same time, inside the outer frame plate 19, reinforcing plates 20 in the plane front-rear direction and left-right direction are provided around the connecting steel pipe 18, and the upper part of the outer frame plate 19 and the connecting steel pipe 18 are obliquely covered. A plurality of ribs 22 are provided between the upper part of the cover plate 21 and the connecting steel pipe 18. Further, a reinforcing plate 23 is provided integrally with the upper portion of the plate 17 so as to be located inside the connecting steel pipe 18. Further, a weight such as concrete (not shown) is provided between the outer frame plate 19 and the connecting steel pipe 18. The connecting steel pipe 18 of the weight body 15 and the pipe 16G, and the pipes 16A, 16B, 16C, 16D, 16E, 16F and 16G are connected to each other by connecting the flange joints 24 provided at the ends thereof with bolts and nuts. Assembled. The upper pipe 16B is provided with vertical visual indicators 25 which are colored at predetermined intervals.

The small weight 26 falls on the reinforcing plate 23 and strikes the plate 17, and has a size capable of moving up and down in the shaft 16 and the connecting steel pipe 18. In this example, a columnar member made of steel is used, and a wire 27 is connected to the upper portion of the small weight 26. A hanging metal fitting 28 is provided integrally with the pipe 16A at the upper end of the shaft 16, and a hanging wire 29A of a main wire 29 for lifting a weight is connected to the hanging metal fitting 28. The pipe 16B is lifted up and down along the guide rod 13, and the pipe 16B is provided with vertical guide members 30, 30 on both sides of the contact point between the pipe 16B and the guide rod 13. Provided. The guide member 30 is made of a pipe smaller in diameter than the shaft 16, and has a convex curved surface 30A on its rear surface.

A square tube 31 smaller than the shaft 16 is provided in the pipe 16 A of the shaft 16 at the upper end, and the inside of the square tube 31 forms an insertion port 32 through which the wire 27 is inserted. The insertion port 32 is provided with a pair of front and rear rotation rollers 33 and 33 and a pair of left and right rotation rollers 34 and 34 as guide members. The rotating rollers 33 and 34 are attached to the rectangular tube 31 by bearings 35, and roller bodies 33A and 34A as cylindrical bodies are rotatably provided. The wire 27 passes through the insertion opening 32 in a substantially vertical direction, the rotating rollers 33 and 34 are arranged in a horizontal direction, and the rotating rollers 33 and 34 cross the wire 27 in the crossing direction.

As shown in FIG. 7 and FIG. 8, a left connecting portion 41L and a right connecting portion 41R are provided on the left and right of the upper shaft 16, and these connecting portions 41L and 41R are provided with connecting fittings (not shown) and the like. The ends of the left and right wires 42L and 42R are detachably connected to each other. The front cylinder 7 is provided with a plurality of guide members 44, 44 such as guide rollers for guiding the left and right wires 42L, 42R in different directions, respectively. A left and right wire 42L, 42R, the ends of which are connected to the left and right connecting portions 41L, 41R, are routed to the left and right outside along the weight guide portion 11, respectively. The bases of the left and right wires 42L, 42R are connected to tension winches 43L, 43R as tensioning means provided on the hull 2, respectively.

The hoist 3 includes a swing arm 45, a swing drive unit 46 such as a swing drum that swings the swing arm 45, a swing drive unit 47 that swings the swing arm 45, the main wire 29 and the wire 27. And a winding device 48 for winding the main wire 29 and the wire 27 separately from each other.

An automatic tracking type light wave measuring device 51 is provided at the front of the hull 2. The light wave measuring device 51 is a light wave distance meter, and is provided with a target prism 52 provided on the shaft 16. , The amount of deviation from the center of the light receiving optical axis is detected, and the X-axis and Y-axis servo motors (not shown) are driven to automatically track the prism 52, and the height position of the prism 52 is determined. calculate. The plurality of prisms 52 are provided at the same height in a range of approximately 180 degrees at the rear portion of the outer periphery of the shaft 16A. If there is a fixed point such as a caisson near the construction site, the light wave measuring device 51 can be installed at the fixed point.

The left and right wires 42L and 42R are wound around drums 53 of the tension winches 43L and 43R, and the tension winches 43L and 43R are provided with adjusting means 53 as shown in FIG. The adjusting means 54 includes a tension adjusting means 55 for adjusting the tension of the wires 42L and 42R, and a winding speed adjusting means 56 for adjusting the winding speed of the wires 42L and 42R.

Next, a rubble leveling method using the weight 14 will be described. First, the weight 14 is mounted on the hull 2, and after moving the hoist ship 1 to the construction position, the weight 14 is lifted by the hoist 3 and the shaft 16 is set on the weight guide portion 11. In this case, since the guide floating frame 4 is open at the front side, the setting of the weight 14 whose weight body 15 is larger than the shaft 16 can be easily performed. The left and right wires 42L, 42R are connected to the shaft 16, respectively. The weight 14 is positioned by the hoist 3, and the plate 17 at the lower end of the weight 14 is landed on the top end surface 62 of the rubble 61 formed higher than the planned height. Then, the wires 42L and 42R are wound and tensioned by the tension winches 43L and 43R, and the weight 14 is supported upright. In this case, the tension of the wires 42L and 42R is set in advance by the tension adjusting means 55. The main wire 29 can be loosened while the weight 14 is upright, and the height of the weight 14 in the upright state is measured by the lightwave measuring device 51. In this manner, the weight 14 can be measured along the guide floating frame 4 by the tensioned wires 42L and 42R so that the height can be measured in an upright state with the main wire 29 loosened. Can accurately measure the height of the top end face 62. Then, the main wire 29 is wound up and the weight 14 is lifted, and at the time of this lifting, the wires 42L and 42R are fed out from the tension winches 43L and 43R with a predetermined tension, and the lifted weight 14 is lifted. Free fall and roll the top end face 62. This drop is performed a required number of times to perform the compaction, and the height of the top end face 62 is measured using the light wave measuring device 51. In this case, since the winding speed of the drums 53, 53 is set by the winding speed adjusting means 56 for the tension winches 43L, 43R, the left and right wires 42L, 42R are smoothly moved when the weight 14 falls. It is wound up. Then, when the height of the top end face 62 is close to the planned height, the weight body 15 of the weight 14 is landed, and the wires 42L, 42R are tensioned by the tension winches 43L, 43R. Is supported upright, and the main wire 29 is loosened. Next, the wire 27 is taken up, the small weight 26 in the shaft 16 is lifted, the small weight 26 is freely dropped, and the plate 17 is hit, and this is repeated as many times as necessary to set the top end face 62 to the planned height. Finish.

At the time of finishing with the small weight 26, the wire 27 is wound up by the winding device 48 and the small weight 26 is pulled up. At this time, the wire 27 is rotated by the rotating rollers 33, 33, of the insertion opening 32. Since it is pulled up through the space between the rollers 34, 34, even if it comes into contact with the rotating rollers 33, 33, 34, 34, it can be pulled up smoothly with little friction. Also, when the suspended small weight 26 vibrates like a pendulum due to the wind hitting the wire 27 or the sway of the hull 2, the wire 27 is rotated by the rotating rollers 33, 33, 34 at the position of the insertion opening 32. , 34 are guided to the center side of the shaft 16, so that the small weight 26 is positioned at the center of the shaft 16, or the positioning can be easily performed. Further, when the small weight 26 falls freely, the wire 27 is pulled into the shaft 16 in a short time, but at this time, the friction is reduced by the rotating rollers 33, 33, 34, 34 provided in the insertion port 32. Is performed. The finish height measurement of the top end face 62 using the small weight 26 is performed by the lightwave measurement device 51.

As described above, in this embodiment, the hull 2 provided with the hoist 3, the weight 14 suspended from the hoist 3, and the weight main body provided below the weight 14 correspond to claim 1. 15, a hollow shaft 16 provided on the upper portion of the weight body 15, a small weight 26 that can fall inside the shaft 16, and an external port 32 for supporting the small weight 26 and passing through the insertion opening 32 of the shaft 16. The wire 27 is pulled out, and the small weight 26 is pulled up by the wire 27, and the small weight 26 is dropped and hits the weight body 15 in contact with the top end surface 61 which is the bottom of the water. In the rubble leveling device, the insertion rollers 32 are provided with rotating rollers 33, 33, 34, and 34 as guide members for guiding the wire 27 toward the center of the shaft 16, so that the rotating rollers 33, 33, and 34 are provided. Since the wire 27 is guided to the center side of the shaft 16 by the It can be positioned on the center side of the shaft 16.

As described above, in this embodiment, the insertion port 32 is formed smaller than the inner diameter cross section of the shaft 16, and the insertion port 32 is provided at the center of the shaft 16. Since the wire 27 passes through the center of the shaft 16 through the insertion port 32, the suspended small weight 26 can be positioned at the center of the shaft 16.

Further, as described above, in this embodiment, corresponding to the invention of claim 3, the guide member is the rotating roller 33, 33, 34, 34 which is a cylindrical body crossing the wire 27. Even if the wire 27 is in contact with the insertion port 32, the frictional resistance is small because it makes point contact with the peripheral surfaces of the rotating rollers 33, 33, 34, 34.

Furthermore, according to the present embodiment, the cylindrical body is the rotating rollers 33, 33, 34, and 34, even if the wire 27 is in contact with the insertion port 32. Since the rotating rollers 33, 33, 34, 34 rotate, the frictional resistance is further reduced.

In this embodiment, the rotary rollers 33, 33, 34, 34 are provided on all sides, and the wire 27 is provided between the rotary rollers 33, 33, 34, 34. The wire 27 can be positioned from four directions by the rotating rollers 33, 33, 34, 34.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the shape of the shaft is not limited to a cylindrical shape, and may be a rectangular tube shape. Further, various materials can be used for the wire.

[0029]

[Effect of the invention]

 The invention of claim 1 includes a hull provided with a hoist, a weight suspended from the hoist, a weight body provided below the weight, and a hollow shaft provided above the weight body. A small weight that can be dropped in the shaft, and a wire that supports the small weight and is inserted through the insertion opening of the shaft. The small weight is pulled up by the wire, and the pulled small weight is pulled up. The underwater rubble leveling device for hitting the weight body in contact with a water bottom by dropping the wire is provided with a guide member that guides the wire at the center of the shaft at the insertion port, and the weight is lifted. It is possible to provide an underwater rubble leveling device that can correctly position the rubble at the center of the shaft.

In the invention of claim 2, the insertion opening is formed smaller than the inner diameter cross section of the shaft, and the insertion opening is provided at the center side of the shaft. An underwater rubble leveling device can be provided which can be correctly positioned at the center of the rubble.

Further, according to the invention of claim 3, the guide member is a cylindrical body in a direction crossing the wire, so that the suspended weight can be correctly positioned at the center of the shaft. The present invention can provide an underwater rubble leveling device capable of preventing abrasion of a wire.

Further, according to the invention of claim 4, the cylindrical body is a rotating roller, which can correctly position the suspended weight at the center of the shaft, and wears the wire supporting the weight. It is possible to provide an underwater rubble leveling device capable of preventing rubble.

Further, the invention of claim 5 is that the rotating rollers are provided on all sides and the wire is inserted between these rotating rollers, so that the suspended weight can be correctly positioned at the center of the shaft. It is possible to provide an underwater rubble leveling device capable of preventing abrasion of a wire supporting a weight.

[Brief description of the drawings]

FIG. 1 is a side view of a hoist ship during a compaction operation according to an embodiment of the present invention.

FIG. 2 is a front plan view of the hoist ship showing one embodiment of the present invention.

FIG. 3 is a side view of the weight guide unit according to the embodiment of the present invention;

FIG. 4 is a rear side view of the guide floating frame according to the embodiment of the present invention;

FIG. 5 is a partially cutaway side view of the weight body showing one embodiment of the present invention.

FIG. 6 is a bottom view of the weight body showing one embodiment of the present invention;

FIG. 7 is a side view of the weight showing one embodiment of the present invention.

FIG. 8 is a sectional view taken along the line AA of FIG. 7, showing one embodiment of the present invention;

FIG. 9 is a block diagram of the adjusting means showing one embodiment of the present invention.

FIG. 10 is a plan view of an insertion port showing one embodiment of the present invention.

FIG. 11 is a side view of the upper part of the shaft showing one embodiment of the present invention.

[Explanation of symbols]

 2 Hull 3 Hoist 14 Weight 15 Weight body 16 Shaft 26 Small weight 27 Wire 33,34 Rotating roller

Claims (5)

[Utility model registration claims] 1. A hull provided with a hoist, a weight suspended from the hoist, a weight body provided below the weight,
A hollow shaft provided at the upper part of the weight body, a small weight that can fall in the shaft, and a wire that supports the small weight and is inserted through an insertion port of the shaft,
In the underwater rubble leveling device that pulls up the small weight by this wire and drops the pulled small weight and hits the weight body in contact with the bottom of the water, An underwater rubble leveling device provided with a guide member for guiding. 2. The underwater rubble leveling device according to claim 1, wherein the insertion port is formed smaller than an inner diameter cross section of the shaft, and the insertion port is provided on a center side of the shaft. 3. The underwater rubble leveling device according to claim 1, wherein the guide member is a cylindrical body in a direction crossing the wire. 4. The underwater rubble leveling device according to claim 3, wherein the cylindrical body is a rotating roller. 5. The rotary roller is provided in all directions,
The underwater rubble leveling device according to claim 4, wherein the wire is inserted between the rotating rollers.