JP3330211B2 - Pneumatic caisson - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for moving an excavator carried into a working room through a slab opening to a fixed traveling rail laid on a slab ceiling or vice versa. The present invention relates to a pneumatic caisson provided with an excavator moving and collecting device that can move from a traveling rail side to a slab opening, that is, can traverse.

[0002]

2. Description of the Related Art A caisson is usually made of reinforced concrete on the ground, is installed at a predetermined place, excavates earth and sand in the ground, and discharges the sediment in the caisson to a predetermined supporting ground by its own weight. Is sinking.

[0003] Such a caisson is usually formed in the shape of a square tube or a cylinder. Recently, a fixed traveling rail is provided on a ceiling of a work room provided below the caisson, and an excavator is mounted on the fixed traveling rail. It is movably mounted, and the work room is excavated by unmanned operation.

In this case, an opening is formed in the caisson slab to communicate with the working chamber, and a lock device such as a hatch container and a shaft is provided above the opening. Carry indoors.

[0005] Then, the loaded excavator is moved to a fixed traveling rail laid on the outer peripheral portion of the slab ceiling (hereinafter, referred to as “excavator”).
This is called traversing), and excavation work is being performed.

When the caisson is settled, the ground in the working room is excavated. Excavated earth and sand is carried out to the ground side by an earth and sand bucket and collected.

[0007]

In this case, it is preferable to share the portion for collecting the earth and sand and the portion for taking in and out the excavator because the structure of the structure itself is simplified. Further, when the excavator is traversed from the opening of the slab to the fixed traveling rail on the outer periphery or vice versa, it is necessary to steadily and surely traverse the excavator.

The present invention has been proposed in view of the above, and it is an object of the present invention to provide a new excavator having a simple structure and capable of causing an excavator to traverse a caisson structure in a stable state. To provide a matic caisson.

[0009]

That is, according to the present invention, a part of a fixed traveling rail (21) laid on a ceiling surface of a slab (4) and along which an excavator (8) travels is separated,
It becomes a detachable running rail (22) that can be freely connected, and this separated running rail (22) is connected to the fixed running rail (21).
Traversing rails (19), (19 ') laid in a straight line at right angles to the opening (6) of the slab (4)
A moving means for moving along, the moving means,
Gears (20), (20 ') laid in parallel along the traversing rails (19), (19') and this gear (2).
0), (20 ') can be engaged with the excavator
It is provided on the body (23) side and is connected to the drive motor (37).
Rotatable traversing gear (36) and the traversing gear (36)
The interlockable in or push-up with the gear (20), transverse rails
And a transverse gear pass can be or depressed (19) push-up cylinder (39), the fixing of the excavator (8)
A driving mode is provided between the traveling rail (21) and the opening (6).
The above object has been achieved as a structure that can be moved via the tab (37) . In this case, the excavator traveling body (23)
And a traverse gear (36) provided in the traverse gear (3).
6) The traversing gear lifting cylinder (39) for raising and lowering is operated by switching the traveling hydraulic power,
The above objective has been achieved.

[0010]

The pneumatic caisson of the present invention has a structure in which a portion for collecting earth and sand and a portion for taking in and out an excavator are shared, and the structure of the caisson body itself is simplified.

When the excavator 8 is traversed, gears 20 and 20 'such as racks or pins are provided on the slab ceiling, and a traverse gear 36 such as a sprocket provided on the traveling body side of the excavator 8 meshes with the gears. Because it moves sideways, it can be moved reliably and safely.

In this case, the traversing gear 36 is freely meshable so as to mesh only when traversing, that is, freely movable up and down. When the excavator 8 is on the fixed traveling rail 21 side, it is lowered so as not to be in the way. Is located.

As the driving means, a traverse gear lifting cylinder 39 is used. A hydraulic drive motor 37 for rotating the traversing gear 36 and a hydraulic source which is a driving source of the traversing gear lifting cylinder 39 for driving is provided. The excavator 8 is operated by switching traveling hydraulic power, which is a hydraulic unit incorporated in the excavator 8.

The hydraulic unit further includes a boom hoist cylinder 1 connected to a work boom 17 of the excavator 8.
The present invention is also used for driving, and the present invention uses a common hydraulic unit, has a simple configuration as much as possible without complicating the overall configuration, and suppresses the cost.

Further, according to the present invention, the recovery device is provided in the opening 6 for carrying in and recovering the excavator 8 and carrying out the earth and sand, and can pass through the opening 6 and a lock device provided thereabove. A recovery pedestal setting support 15 for seating the gantry 10 substantially horizontally is provided so that the recovery gantry 10 is fixed in a stable state.

The traversing rail 19 and a part of the traversing rail 19 'are attached to the ceiling surface of the collection gantry 10, and the traveling rail 22 is separated from the collection gantry 10 to the outer peripheral side of the slab 4, so that the traveling rail 22 is stable in both directions. It is configured to be able to move with.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of an embodiment of the present invention, and FIG.
Fig. 3 shows explanatory views of a fixed traveling rail, a separated traveling rail, a traversing rail, and the like provided on a ceiling surface or the like of the slab.

In these figures, reference numeral 1 denotes a main body of a pneumatic caisson, and a work chamber 5 is defined below the cutting opening 3 of the side wall 2 and a slab 4 for separating the upper and lower sides. Compressed air is sent into the working chamber 5 by a known means.

At a substantially center of the slab 4, for example, a substantially circular opening 6 is formed, and a lower portion of a hatch container 7 is connected to the opening 6, and an excavator storage container is connected to an upper portion of the hatch container 7. The lower part of a cylindrical shaft that functions as a lock is connected to form a lock device.

The excavator 8 is carried into the work chamber 5 through the hatch vessel 7 and through the opening 6, or conversely, is recovered after the excavation is completed. That is, the excavator 8 is provided on a recovery stand 10 connected to a well-known lifting device (not shown) such as a hanging wire 9 of a winch.

The collection platform 10 is used for the hatch container 7.
It is designed to pass through. An engaging portion 11 for hooking the wire 9 is provided on an upper portion of the recovery stand 10. A roller 13 rotatable via a roller support 12 is provided on the outer peripheral portion. Since the roller 13 comes into contact with the guide 18 in the lock device, the collection platform 10
Can move up and down in a stable state.

Reference numeral 14 denotes a receiving stand provided on the outer periphery of the upper part of the recovery gantry 10. A receiving portion 14a extending toward the outer periphery is projected from the upper end of the receiving stand 14. Correspondingly, a support base 15 is provided below the lock device and below the opening 6.
Is provided.

When the excavator 8 is carried in, the excavator 8 is operated by operating the cylinder 16 so that the boom 17 is directed downward, and the excavator 8 can pass through the lock device.

The guide 18 is provided inside the lock device.
The recovery pedestal 10 is smoothly moved down while being kept horizontal by the guide roller 13 along the guide 18, and is brought into a substantially horizontal state when the receiving portion 14 a of the receiving pedestal 14 comes into contact with the supporting pedestal 14. Is determined.

In this case, the lower surface of the recovery gantry 10, that is, the ceiling surface is substantially flush with the ceiling surface of the slab 4.

A traversing rail 19 ', which is a part of an extension of a pair of traversing rails 19 provided on the slab 4 side, is provided on the ceiling surface of the recovery gantry 10. In other words, the traversing rail 19 ′ continues to the traversing rail 19 provided on the ceiling surface of the slab 4 toward the fixed traveling rail 21. In addition, almost at the center of the traversing rail 19, FIG.
As shown in FIG. 7, a part of a gear 20 'is provided, and this gear 20' is connected to a traversing gear 20 which is provided on the fixed running rail 21 side of the ceiling surface of the slab 4 and is composed of a rack, pins, and the like.

On the outer periphery of the ceiling surface of the slab 4, a pair of the fixed traveling rails 21 are provided, for example, in a substantially circular shape. It has become.

The separation traveling rails 22 are provided on the ceiling surfaces of the slab 4 and the recovery gantry 10 from the opening 6 to the outer periphery in a straight line.
It is reciprocally movable along 9 '. The reciprocating means for traversing will be described later.

However, when the collection platform 10 has landed,
A reciprocating detachable travel rail 22 is provided on a traverse rail 19 ′ on the lower surface (ceiling surface) of the recovery platform 10, and an excavator traveling body 23 having the excavator 8 is movable with respect to the detachable travel rail 22. The reciprocating detachable traveling rail 22 traverses to the fixed traveling rail 21 via the driving means, and accordingly, the excavator traveling body 23 also traverses and moves to the fixed traveling rail 21 side. , Can be arbitrarily moved in the work room 5 by remote control.

That is, the excavator traveling body 23 has a pedestal 25 below the pedestal 25 for supporting the excavator 8, a traveling motor 26 is provided above the pedestal 25, and the traveling motor 26
Is provided with a pinion 27 which is a rotating body for traveling. The pinion 27 is a fixed traveling rail 21 and a detachable traveling rail 22 which can be connected to and separated from the fixed traveling rail 21.
Meshes with a rack formed on the inside. Then
When the traveling motor 26 is driven, the pinion 27 rotates, so that the excavator traveling body 23 and, consequently, the excavator 8 move along the rack.

It is to be noted that the excavator traveling body 23 travels stably.
The running roller 28 pincushion the order was provided.
The center portion of the running roller 28 is concave, and a rail portion that is cut off and protrudes substantially horizontally outward of the running rail 22 is loosely fitted therein. The running roller 28 is rotatably supported via a support shaft. This will be described later.

A clamp mechanism is provided around the traveling roller 28 for reliably separating the excavator 8 against the reaction force of the excavator 8 during excavation and fixing the excavator traveling body 23 to the traveling rail 22 or the fixed traveling rail 21. 29 are provided.

The clamp mechanism 29 is provided with a cylinder 30
And an arm 31 whose base end is connected to each end of the cylinder 30 and whose front end is bent substantially in an L-shape toward the rail portion side. The portions are pivotally supported, and when the cylinder 30 is extended, the distal end of each arm 31 sandwiches the rail portion and is fixed (see FIG. 1). On the other hand, when the cylinder 30 is contracted, the excavator traveling body 23 is released by performing the reverse movement and is movable.

FIG. 3 shows a state in which the excavator traveling body 23 is viewed from a position different from that in FIG. 4 and 5 show a means for causing the excavator traveling body 23 to traverse.

First, in FIG. 3, reference numerals 32 denote support members provided on both sides of the upper part of the separation traveling rail 22, respectively.
A traversing roller 33 is rotatably provided on the support member 32, and the traversing roller 33 is movably incorporated in the traversing rail 19. In FIG. 3, reference numeral 34 denotes a support shaft of the thread-winding type traveling roller 28, and reference numeral 35 denotes a support member thereof.

Next, with reference to FIG. 3, FIG. 4 and FIG.

That is, the traverse gears 20 and 2 provided on the ceiling surface of the slab 4 and the recovery gantry 10 are provided above the pedestal 25.
Traversing gear 36 such as a sprocket gear meshable with 0 '
Is provided. The traversing gear 36 is driven by a drive motor 37.
Is linked to In addition, these members are connected to the frame 38.
And a traverse gear push-up cylinder 39 is provided between the frame 38 and the pedestal 25. By controlling the traverse gear push-up cylinder 39, as shown in FIG. As shown in FIG. 5, the gear 20 is moved downward to be separated from the gear 20 or vice versa. Then, the driving motor 37
, The excavator traveling body 23 can be traversed.

The operation of the traversing gear lifting cylinder 39 is designed to push up or down the traversing gear 36 by switching the traveling hydraulic power of the hydraulic unit on the excavator 8 side. The rotation of the traverse gear 36 and the operation of the traverse gear push-up cylinder 39 can be operated by using an independent hydraulic device.

The sediment generated during excavation is discharged using a sediment bucket as is well known, and the sediment bucket is taken in and out through the opening 6.

FIG. 6 shows an example of a hydraulic circuit for traveling hydraulic power.
In operation, the hydraulic pump 51 is rotated by the electric motor 50 of the hydraulic unit incorporated in the excavator 8, and the generated hydraulic pressure flows to the traverse / travel switching valves 53 and 54 by operating the traveling valve 52. During excavation work,
The traverse / travel switching valve 53 is connected to the travel motor 2 in the state shown in FIG.
The forward, backward, and stop are performed by operating the travel valve 52. The drive motor 37 is connected to the traversing valve 5.
4 driven. The traversing gear lifting cylinder 39 is operated by the lift valve 55.

When the excavation is completed, the excavator 8 is detached from the fixed traveling rail 21 and transferred to the traveling rail 22 in order to recover the excavator 8 in the opposite manner as described above.

When the excavator 8 is collected, when the traverse / travel switching valve 53 is operated, hydraulic pressure flows through the traverse valve 54 and the lift valve 55. When the lift valve 55 is operated on the separated traveling rail 22, the drive motor 37 for rotating the traverse gear 36 is engaged with the gears 20, 20 '. Next, when the traversing valve 54 is operated, the drive motor 37 rotates, and the excavator traveling body 23 with the excavator 8 suspended along the gears 20 and 20 ′ traverses toward the opening 6 of the slab 4.

[0043]

As described above, according to the present invention, the excavator traveling body 23 can be engaged with the gears 20 and 20 'provided on the ceiling surface of the slab 4 and the recovery gantry 10 and can rotate freely. 36, the vehicle can be safely and reliably traversed. The traversing gear 36 is moved up and down by a traversing gear lifting cylinder 39. The cylinder 39 uses traveling hydraulic power on the excavator 8 side and does not require a hydraulic device dedicated to the cylinder. And an increase in equipment cost can be suppressed.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing the configuration of an embodiment of the present invention.

FIG. 2 is an explanatory view of a fixed traveling rail, a separated traveling rail, a traversing rail, and the like provided on a ceiling surface or the like of a slab.

FIG. 3 is an explanatory view of the excavator traveling body viewed from a direction different from FIG. 1;

FIG. 4 is an explanatory view of the operation of the traversing gear of the present invention.

FIG. 5 is an explanatory view of the operation of the traversing gear of the present invention.

FIG. 6 is an explanatory diagram of a hydraulic circuit used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pneumatic caisson main body 2 Side wall 3 Blade opening 4 Slab 5 Work room 6 Opening 7 Hatch container 9 Wire 10 Recovery stand 11 Engaging part 12 Roller support part 13 Roller 14 Receiving stand 14a Receiving part 15 Support stand 16 Cylinder 17 Boom REFERENCE SIGNS LIST 18 guide 19, 19 ′ traversing rail 20, 20 ′ gear 21 fixed traveling rail 22 disconnecting traversing rail 23 excavator traveling body 25 pedestal 26 traveling motor 27 pinion 28 traveling roller 29 clamp mechanism 30 cylinder 31 arm 32 support member 33 lateral roller 34 Support shaft 35 Support member 36 Traverse gear 37 Drive motor 38 Frame 39 Traverse gear push-up cylinder 50 Electric motor 51 Hydraulic pump 52 Traveling valve 53 Traverse / travel switching valve 54 Traverse valve 55 Lift valve

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 23/08

Claims (2)

(57) [Claims] The slab (4) is laid on the ceiling surface and excavated.
Fixed traveling rail (2) along which the machine (8) travels
A part of 1) can be separated and connected.
2), and the separated traveling rail (22) is fixed to the fixed
Of the slab (4) at a right angle to the constant running rail (21)
To the opening (6)LinearlyLaying traversing rail
(19) There is a moving means for moving along (19 ').
Andthis The moving means includes the traversing rails (19), (19 ').
alongIn parallelLaid gears (20), (20 ')
And these gears (20), (20 ')
AndDrive motor provided on the excavator traveling body (23) side
(37) a rotatable traversing gear (36) connected to (37);This
Traverse gear (36)Meshing with gear (20)Push up
OrPassing the traversing rail (19)Push down
With the traverse gear lifting cylinder (39)Has, The excavator (8) is connected to the fixed traveling rail (21) side and forward.
Movable between the openings (6) via a drive motor (37)
Made A pneumatic caisson characterized by the following. 2. A traversing gear (36) provided on an excavator traveling body (23) and a traversing gear lifting cylinder (39) for raising and lowering the traversing gear (36) are operated by switching traveling hydraulic power. The pneumatic caisson according to claim 1.