JP2023070693A - Construction system for open caisson - Google Patents

Abstract

To provide a construction system for an open caisson with fewer constraint on a construction site and versatility allowing construction to be easily automated and allowing a construction environment around a caisson body to be arranged in good order.SOLUTION: A construction system for an open caisson comprises: guide rails 21 annularly installed on an inner wall surface of a caisson skeleton 1; an excavator 2 movably placed along the guide rails 21 to excavate sediment within the caisson skeleton 1 with the excavator 2; a crab trolley ceiling crane 3 installed in a space above the caisson skeleton 1; a turntable 33 provided on a crab 32 laterally moving on a crane girder 31 of the crab trolley ceiling crane 3; and a lifting support mechanism 34 of the excavator 2 and a driving power supply mechanism 35 supplying driving power to the excavator 2 installed on the turntable 33.SELECTED DRAWING: Figure 1

Description

The present invention relates to an open caisson construction system used for constructing vertical shafts such as departure shafts and arrival shafts.

Conventionally, as a construction method for excavating this type of open caisson, a so-called open caisson construction method is known, in which the caisson is submerged while the earth and sand inside the caisson are excavated by an underwater excavator.

As a typical construction system for this conventional open caisson construction method, for example, there is one disclosed in Patent Document 1.
This open caisson construction system
(a) an excavator movable along a running rail laid on the lower inner wall of the caisson frame to excavate the earth and sand inside the caisson frame;
(b) a self-propelled trackless support machine that is provided outside the caisson frame and supports driving of the excavator;
(c) a lifting device for moving the excavator up and down along the inner wall of the caisson frame; A self-propelled excavating/soil lifting device for lifting soil and for lifting the earth and sand excavated by the excavator is provided.

JP-A-11-229394

By the way, the open caisson construction system disclosed in the above-mentioned Patent Document 1 supports the driving of the excavator by a self-propelled trackless support machine, and also excavates and lifts the earth and sand by self-propelled excavation and lifting. Since it is carried out using soil equipment, there are few restrictions on the construction site and it has the advantage of versatility. There was a problem that it tends to become cluttered.

In view of the problems of the open caisson construction system disclosed in Patent Document 1, the present invention has fewer restrictions on the construction site, has versatility, is easy to automate construction, and improves the construction environment around the caisson frame. To provide an open caisson construction system capable of making orderly.

In order to achieve the above object, the open caisson construction system of the present invention has guide rails laid circularly on the inner wall surface of the caisson frame, an excavator arranged movably along the guide rails, and the excavator In an open caisson construction system for excavating earth and sand inside a caisson frame, a club trolley type overhead crane is installed in the upper space of the caisson frame, and the club trolley type overhead crane turns to a club that traverses on the crane girder. It is characterized in that a table is provided, and an excavator elevation support mechanism and a power supply mechanism for supplying power to the excavator are arranged on the turntable.

In this case, a control mechanism is provided to control the horizontal travel of the club trolley type overhead crane and the rotation of the turntable, and the control mechanism controls the lifting support mechanism and the power supply mechanism arranged on the turntable of the club. , the angular relationship in plan view with the excavator supported by the club via the lifting support mechanism is controlled to remain unchanged.

In addition, two crane girders are arranged on the above-mentioned crab trolley type overhead crane, a turntable is provided on one of the crane girders, and a clamshell bucket is provided on the other crane girder. can be

Moreover, the upper space of the caisson frame can be covered with a building.

According to the open caisson construction system of the present invention, a club trolley type overhead crane is installed in the upper space of the caisson frame, a turntable is provided on the club that traverses on the crane girder of the club trolley type overhead crane, and the turntable By arranging an elevating support mechanism for the excavator and a power supply mechanism for supplying power to the excavator, there are fewer restrictions on the construction site, versatility, and easy automation of construction. The construction environment at the construction site around the caisson frame can be made orderly.

A control mechanism is provided to control the horizontal travel of the club trolley type overhead crane and the rotation of the turntable. Construction work can be automated by controlling the angular relationship in plan view with the excavator supported by the club through the mechanism to remain unchanged.

In addition, a club trolley type overhead crane is provided with two crane girders, a turntable is provided on one of the crane girders, and a clamshell bucket is provided on the other crane girder. By doing so, the driving support of the excavator and the excavation and unloading of earth and sand can be performed using a common club trolley type overhead crane.

Moreover, by covering the upper space of the caisson frame with the building, it is possible to prevent the noise generated from the construction site from diffusing to the surroundings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing an embodiment of an open caisson construction system according to the present invention; FIG. 4 is an operation explanatory diagram of a control mechanism for controlling lateral travel of a club trolley type overhead crane and rotation of a turntable in the same open caisson construction system.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an open caisson construction system according to the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the open caisson construction system of the present invention.
This open caisson construction system is used for constructing vertical shafts such as a starting vertical shaft and an arrival vertical shaft. In an open caisson construction system in which an excavator (underwater excavator) 2 is arranged movably along the path and excavates the earth and sand inside the caisson body 1 by the excavator 2, a club is placed in the upper space of the caisson body 1 A trolley type overhead crane 3 is installed, a turntable 33 is provided on a club 32 that traverses on a crane girder 31 of the club trolley type overhead crane 3, and an elevating support mechanism 34 for an excavator 2 and an excavator are mounted on the turntable 33. 2 is provided with a power supply mechanism 35 for supplying power.

Here, the excavator 2 includes a drive mechanism for moving along the guide rail 21, a drive mechanism for the excavator, and a position detection mechanism for the excavator 2 (for example, a guide rail). 21) can be used.

The lifting support mechanism 34 has a wire reel, and the power supply mechanism 35 has a cable reel. It is designed to perform winding up and down operations of the cable to be sent to.
Here, the wire reel of the elevating support mechanism 34 is arranged at a position above the turntable 33 that supports the excavator 2 at the center position of the turntable 33 by a wire suspended from the wire reel.

Moreover, the upper space of the caisson frame 1 is covered with the building 4 in a predetermined range, and the traveling rail 37 of the club trolley type overhead crane 3 is laid on the beam 41 of the building 4. - 特許庁
By providing the building 4, it is possible to prevent the noise generated from the construction site from diffusing to the surroundings, and in particular, to solve the noise problem in urban areas.

In addition to the crane girder 31 on which the club 32 provided with the turntable 33 traverses, the crane trolley type overhead crane 3 is also provided with a second crane girder 38, and a crab 39 traversing on the crane girder 38 is attached to the crane girder 31. A shell bucket 6 is provided.
As a result, the driving support of the excavator 2 and the excavation and unloading of earth and sand by the clamshell bucket 6 can be performed using the common club trolley type overhead crane 3 .

On the ground in the building 4 around the caisson frame 1, a maintenance stand 22 for maintenance of the excavator 2 pulled up to the ground is installed, and on the ground outside the building 4, the press-in equipment 5 for the caisson frame 1 is pressed. A management room 51 for management and a hydraulic unit 52 for supplying pressure oil to the press-in equipment 5 are installed.

The excavator 2 mounted on the maintenance platform 22 and maintained is connected to a lifting support mechanism 34 and a power supply mechanism 35 of a club 32 that traverses on the crane girder 31 of the club trolley type overhead crane 3 .
In this state, the excavator 2 is lifted via the lift support mechanism 34, the club trolley type overhead crane is horizontally traveled, and the guide rail 21 is suspended via the lift support mechanism 34 at the reference position 21a where the guide rail 21 is notched. By attaching it to the rail 21, it is arranged movably along the guide rail 21 so that the earth and sand inside the caisson frame 1 can be excavated.

By the way, this open caisson construction system is provided with a control mechanism for controlling the lateral travel of the club trolley type overhead crane 3 and the rotation of the turntable 33. Control is performed so that the angular relationship in plan view between the lifting support mechanism 34 and the power supply mechanism 35 and the excavator 2 supported by the club 32 via the lifting support mechanism 34 remains unchanged.
As a result, the construction work can be automated, and twisting of the wire suspended from the wire reel of the lifting support mechanism 34 and the cable suspended from the cable reel of the power supply mechanism 35 can be prevented.

Specifically, the excavator 2 placed on the maintenance platform 22 and maintained is transferred from the position shown in FIG. 2(a) to the reference position 21a shown in FIG. By attaching the excavator 2 to the guide rail 21, it is arranged so as to be movable along the guide rail 21.例文帳に追加
The excavator 2 moves 180 along the guide rail 21 as shown in FIGS. 2(b) to 2(e).
° While moving, excavate around and below the inner peripheral surface of the caisson frame 1.
At this time, the control mechanism for controlling the lateral travel of the club trolley type overhead crane 3 and the rotation of the turntable 33 receives the position information (caisson frame 1 position on the circumference), the reference line L of the turntable 33 is always aligned with the position of the crane girder 31 and the club 32 of the club trolley type overhead crane 3 that travels horizontally. By controlling the rotation of the turntable 33 so as to orient the center O of the club 32, the club 32 through the elevating support mechanism 34 and the power supply mechanism 35 arranged on the turntable 33 and the elevating support mechanism 34 The angular relationship in plan view with the excavator 2 supported by 32 is kept unchanged.

When the excavation work in the range of 180° is completed, the excavator 2 returns to the reference position 21a and performs the excavation work in the opposite direction in the range of 180°.
Here, it is also possible to continuously perform the excavation work in the range of 360° from the reference position 21a.

According to this open caisson construction system, the club trolley type overhead crane 3 is installed in the upper space of the caisson body 1, and the club 32 that traverses on the crane girder 31 of the club trolley type overhead crane 3 is provided with a turntable 33. By disposing an elevating support mechanism 34 for the excavator 2 and a power supply mechanism 35 for supplying power to the excavator 2 on the turntable 33, there are few restrictions on the construction site and versatility is ensured. , the construction can be easily automated, and the construction environment at the construction site around the caisson frame 1 can be made orderly.

Although the open caisson construction system of the present invention has been described above based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and can be appropriately configured without departing from the spirit of the present invention. can be changed.

The open caisson construction system of the present invention has the characteristics that there are few restrictions on the construction site, it is versatile, the construction is easy to automate, and the construction environment around the caisson frame can be made orderly. Therefore, it can be widely used to construct vertical shafts such as departure shafts, arrival shafts, and the like.

1 caisson frame 2 excavator (underwater excavator)
21 Guide rail 21a Reference position 22 Maintenance stand 3 Crab trolley type overhead crane 31 Crane girder 32 Crab 33 Turntable 34 Lifting support mechanism 35 Power supply mechanism 36 Hoisting winch 37 Running rail 38 Crane girder 39 Crab 4 Building 41 Beam 5 Press-in equipment 51 Control room 52 Hydraulic unit 6 Clamshell bucket L Reference line of turntable

Claims (4)

An open caisson construction system in which a guide rail is laid circularly on the inner wall surface of a caisson frame, an excavator is arranged movably along the guide rail, and the earth and sand inside the caisson frame is excavated by the excavator. , a club trolley type overhead crane is installed in the upper space of the caisson frame, a turntable is provided on the club that traverses on the crane girder of the club trolley type overhead crane, and a lift support mechanism for the excavator is mounted on the turntable. , an open caisson construction system characterized by arranging a power supply mechanism for supplying power to an excavator. A control mechanism for controlling the horizontal travel of the club trolley type overhead crane and the rotation of the turntable is provided, and the control mechanism controls the lifting support mechanism and the power supply mechanism arranged on the turntable of the club, and the lifting support mechanism. 2. The open caisson construction system according to claim 1, wherein control is performed so that an angular relationship in a plan view with the excavator supported by the club via is unchanged. The club trolley type overhead crane is provided with two crane girders, a turntable is provided on one of the crane girders, and a clamshell bucket is provided on the other crane girder. The open caisson construction system according to claim 1 or 2, characterized in that: 4. An open caisson construction system according to claim 1, wherein the upper space of said caisson frame is covered with a building.

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