JP2593847Y2 - Pneumatic caisson - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to a pneumatic caisson buried underground as an underground structure, more specifically, an excavator carried into a work room through a slab opening is laid on a slab ceiling using a traverse mount. A movable excavator moving and collecting device that can be moved to the slab opening from the fixed traveling rail side to recover the excavator, or vice versa, in order to recover the excavator; The present invention relates to a pneumatic caisson that can securely fix the vehicle to a fixed traveling rail.

[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. It is carried into the room.

[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”).
On the other hand, when the excavator is collected after excavation, the excavator is moved from the fixed traveling rail to the opening.

In this case, a part of the fixed traveling rail is a traversing base comprising a detachable traveling rail which can be connected to and separated from the fixed traveling rail and can be traversed freely. The excavator uses both the fixed traveling rail and the traversing base. It is possible to move freely.

[0007]

Therefore, when the excavator is transferred, it is necessary to securely fix the traversing base in alignment with the fixed traveling rail. If the transfer does not go well or breaks down, the worker must enter the working room under pressure and repair it.Working under this pressure is severe for the worker and excavation during repair You will have to interrupt your work.

The present invention has been proposed in view of the above, and it is an object of the present invention to provide a pneumatic caisson that can securely fix a traversing base to a fixed traveling rail.

[0009]

According to the present invention, the excavator 8 carried into the work room 5 is moved toward the fixed traveling rail 21 side by the traversing platform 2.
In a pneumatic caisson provided with an excavator traversing device for traversing using the cradle 2 or traversing toward the slab opening 6 at the time of recovery, a fixing device capable of fixing the traversing base 22 to the fixed traveling rail 21 is provided. The fixing device is attached to an outer traverse rail 22a constituting the traverse base 22,
Disengagement means extending outward and fixing a base end of a plate-shaped member having an engagement / disengagement portion at an outer end, and provided on the ceiling surface side of the slab 4 so as to be freely attachable / detachable to / from the engagement / disengagement portion. And achieves the above object. Further, in a pneumatic caisson equipped with an excavator traversing device for causing the excavator 8 carried into the work chamber 5 to traverse to the fixed traveling rail 21 side by using the traversing stand 22 or to traverse to the slab opening 6 side at the time of recovery. , A fixing device capable of fixing the traversing platform 22 to the fixed traveling rail 21 is provided.
A hydraulic cylinder 35 is fixed to one of the fixed traveling rails 21.
a is configured to be freely engageable with engaging portions 21a and 22b formed on the fixed traveling rail 21 and the traversing rail 22a, respectively, thereby achieving the above object.

[0010]

In the present invention, since the excavator 8 has the fixing device as described above, there is no displacement of the traverse base 22 with the fixed traveling rail 21 when the excavator 8 is transferred, so that the excavator 8 can be reliably moved.
Can be changed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 is a schematic longitudinal sectional view of a pneumatic caisson which is a premise of the present invention, and FIG. 2 is an explanatory view of a fixed traveling rail provided on a ceiling surface or the like of a slab, a traversing base including a separated traveling rail, a traversing rail, and the like. Is shown.

In these figures, reference numeral 1 denotes a main body of a pneumatic caisson, and a work chamber 5 is defined below a cutting edge 3 of a 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. 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 passes through the hatch container 7 and is carried into the work room 5 through the opening 6, or conversely, is recovered after the excavation is completed. That is, the excavator 8 is suspended below the recovery gantry 10 connected to a well-known lifting device (not shown) such as a suspension wire 9 of a winch.

The collection pedestal 10 passes through the hatch container 7. 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 inner guide 18 in the lock device, the recovery gantry 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 part 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 its cylinder 16 so that the boom 17 is directed downward and is ready to pass through the lock device.

The above-described guide 18 is provided inside the lock device, and the collection gantry 10 is
The guide roller 13 smoothly moves down while keeping the horizontal position, and the receiving portion 14a of the receiving base 14 comes into contact with the supporting base 15 to be set in a substantially horizontal state.

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 traverse rail 19 'which is a part of an extension of a pair of traverse 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' continues to a traversing gear 20, which is provided on a ceiling surface of the slab 4 and includes a rack, pins, and the like.

On the outer periphery of the ceiling surface of the slab 4, a pair of fixed traveling rails 21 are provided, for example, in a substantially circular shape.
A part of the fixed traveling rail 21 is cut off to form a traversing platform 22 composed of separated traversing rails that can traverse freely.

The traversing platform 22 is reciprocally movable along the traversing rails 19, 19 'linearly provided from the opening 6 to the outer periphery of the ceiling surface of the slab 4 and the recovery platform 10.

However, when the collection gantry 10 has landed,
The traverse rail 19 ′ on the lower surface (ceiling surface) of the collection gantry 10 has a reciprocally movable traverse mount 22.
On the other hand, the excavator traveling body 23 equipped with the excavator 8 is movable, and the reciprocally movable traversing base 22 traverses to the fixed traveling rail 21 via the driving means. The traveling body 23 also traverses, and the fixed traveling rail 2
The user moves to the first side and arbitrarily moves 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, and this pinion 27 meshes with a fixed traveling rail 21 and a rack formed inside the traversing base 22 which can be connected to and separated from the fixed traveling rail 21. . 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.

The excavator traveling body 23 is provided with a thread-wound traveling roller 28 for traveling stably.
The center portion of the running roller 28 is concave, and a rail portion that protrudes substantially horizontally outward of the traversing base 22 is loosely fitted to the concave portion. The running roller 28 is rotatably supported via a support shaft.

Around the running roller 28, a clamp mechanism 29 for securely fixing the excavator traveling body 23 to the traversing stand 22 and the fixed traveling rail 21 against the reaction force of the excavator 8 during excavation. Is provided.

The clamp mechanism 29 includes 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.

The earth and sand generated by the excavation is
Is discharged to the outside through a sediment bucket (not shown) which can freely enter and exit. After the excavation is completed, the excavator 8 is recovered.

In this case, the excavator 8 is transferred from the fixed traveling rail 21 to the traversing platform 22 in reverse to the loading operation, but the traversing platform 22 is attached to the fixed traveling rail 21 via a fixing device at the time of loading or recovery. Fixed.

FIGS. 3A and 3B show an example of the fixing device. In this example, a base end of a plate 24 with holes extending outward is fixed to, for example, an outer traverse rail 22a that constitutes the traverse base 22. Further, on the ceiling surface of the slab 4, a row arm 32 is provided, which is detachable from the hole 24a of the plate 24 with holes.

That is, substantially the center of the lock arm 32 is pivotally supported via the pin 34, and the base end is connected to one end of a hydraulic cylinder 35 which operates by remote control. The hydraulic cylinder 35 is supported by an appropriate member. In addition, in the drawing, reference numeral 40 denotes a support member of the lock arm 32, and reference numeral 33 denotes a traverse roller of the traverse mount 22.

When the hydraulic cylinder 35 is extended, the engaging portion 3 of the lock arm 32, for example, bent into an L-shape,
Since 2a is engaged with the hole 24a, the traversing platform 22 can be fixed to the fixed traveling rail 21 in an aligned state.

When the traversing platform 22 is traversed, the fixing can be released by contracting the hydraulic cylinder 35.

FIGS. 4A, 4B and 4C show other examples of the fixing device. (A) is a fixed traveling rail 21 and a traversing rail 22a that constitute the stationary traveling rail 21 and the traversing platform 22.
(B) is an explanatory view seen from the vertical direction showing a state in which the traversing rail 22a is fixed to the fixed traveling rail 21, and (C) is a plan view thereof.

In this example, the hydraulic cylinder 35 is fixed to, for example, one of the fixed traveling rails 21, and the pin-shaped engaging portion 35 a at the extensible end thereof is fixed to the fixed traveling rail 2.
1, each engaging portion 21a, 2 formed on the traversing rail 22a
2b is configured to be freely detachable. This engagement portion 21a,
22b is formed, for example, by forming an engagement hole in a rib member.

The position and number of the hydraulic cylinder 35 and the engaging portions 21a and 22b in the above are not limited to the illustrated example, and the best type is adopted depending on the scale of the caisson and the like.

FIGS. 4 and 5 show the traversing device of the excavator traveling body 23 on which the excavator is suspended.

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 pushing cylinder 39 is provided between the frame 38 and the pedestal 25. By controlling the traversing gear pushing cylinder 39, the traversing gear 36 moves upward as shown in FIG. As shown in FIG. 6, the gear 20 is moved down and separated from the gear 20. Then, the driving motor 37
, The excavator traveling body 23 can be traversed.

The traversing gear lifting cylinder 39 is configured 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 operation of the hydraulic cylinder 35 of the fixing device is the same.

[0040]

As described above, according to the present invention, since the fixing device having a simple configuration capable of fixing the traversing platform 22 to the fixed traveling rail 21 is provided, the excavator 8 can be securely moved from the fixed traveling rail 21 to the traversing platform 22. You can transfer to and vice versa.

[Brief description of the drawings]

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

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

3A is an example of a fixing device of the present invention, FIG.
(B) is a plan view seen from the vertical direction.

FIG. 4 is another example of the fixing device of the present invention, wherein (A) is a front view of a fixed traveling rail or the like, and (B) is a state in which one of the traversing rails constituting the traversing base is fixed to the fixed traveling rail. Is an explanatory diagram viewed from the vertical direction, and FIG.

FIG. 5 is an explanatory view of the operation of the excavator traversing device applied to the present invention.

FIG. 6 is an operation explanatory view of the excavator traversing device.

[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 traversing base 23 excavator traveling body 24 plate with holes 25 pedestal 26 traveling motor 27 pinion 28 traveling roller 29 clamp mechanism 30 cylinder 31 arm 32 lock arm 33 Traversing roller 34 Pin 35 Hydraulic cylinder 36 Traversing gear 37 Drive motor 38 Frame 39 Traversing gear lifting cylinder 40 Support member

Claims (2)

(57) [Scope of request for utility model registration] An excavator (8) carried into a working room (5).
In a pneumatic caisson equipped with an excavator traversing device for traversing the fixed traveling rail (21) side by using a traversing stand (22) or traversing to the slab opening (6) side at the time of recovery. ) Is fixed to the fixed traveling rail (21), and the fixing device includes an outer traversing rail (22a) constituting the traversing platform (22).
A base end of a plate-shaped member extending outward and having an engagement / disengagement portion at an outer end portion is fixed, and is provided on the ceiling surface side of the slab (4) so as to be detachable from the engagement / disengagement portion. A pneumatic caisson characterized by comprising engaging and disengaging means. 2. An excavator (8) carried into a working room (5).
In a pneumatic caisson equipped with an excavator traversing device for traversing the fixed traveling rail (21) side by using a traversing stand (22) or traversing to the slab opening (6) side at the time of recovery. ) Is provided on the fixed traveling rail (21), and a hydraulic cylinder (35) is fixed to one of the fixed traveling rails (21). Flexible engaging portions (35a) are formed on the fixed traveling rail (21) and the traversing rail (22a), respectively.
(22b) A pneumatic caisson characterized by being freely engageable with the pneumatic caisson.