JPH07103575B2 - 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 pneumatic caisson in which a guide device guides the recovery of an excavator from a pneumatic working chamber of a pneumatic caisson and the removal of excavated soil.

[0002]

2. Description of the Related Art Conventionally, the operation of an excavator in a pneumatic caisson work chamber has been performed by an operator boarding and operating the machine. Has come to be seen many. That is, for example, a traveling rail is provided on the ceiling of a work room, and the excavator is operated by mounting the excavator on the traveling rail and performing remote control from the ground, and unmanned excavation is performed in the pneumatic working chamber.

In this case, the excavator is carried into the working chamber from the ground side in a state of being suspended from the recovery stand, and the earth and sand generated by the excavation are discharged to the outside by using the earth and sand bucket. Although the excavator is recovered again by using the recovery rack, it is preferable that the excavator is recovered and earth and sand are carried out by the same shaft because the structure of the caisson structure is not complicated.

[0004]

However, the recovery rack for suspending the excavator has a relatively large shape, whereas the sediment bucket is smaller than that, and a large space is created between the space in the shaft and the sediment bucket. However, there is a problem that the earth and sand bucket cannot be reliably moved up and down unless measures are taken to prevent the earth and sand bucket from tilting in the process of hoisting the earth and sand bucket full of earth and sand. Further, with respect to the recovery stand, there is a problem that when the excavator is placed on the recovery stand, it is dangerous unless a guide is provided for lifting and lowering the center of gravity due to movement of the center of gravity or the like.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a safe recovery platform in which the recovery shaft and the earth and sand bucket are lifted and hung together by the same shaft. And the excavator can be carried in and collected, and the tilt of the earth and sand bucket can be prevented,
(EN) It is an object to provide a pneumatic caisson equipped with a guide device capable of surely raising and lowering a sediment bucket.

[0006]

In order to achieve the above object, the present invention is to pass an object of different shape, such as a recovery rack on which an excavator is suspended or an upper sand bucket for discharging excavated earth and sand, through the same shaft. In the pneumatic caisson, the pneumatic caisson is characterized in that a guide device that is movable corresponding to the shapes of objects of different shapes passing therethrough is provided in the shaft.

[0007]

According to the present invention, the guide device for guiding the recovery rack is provided in the hatch container 4 provided at the upper part of the opening 3 of the slab 1 forming the shaft and the storage container 5 connected to the upper part of the hatch container 4. The recovery stand 7 can be guided along this guide device to ensure safety.

Further, when the earth and sand bucket 12 is lifted up and down, a part of the guide device is rotatably moved so that the recovery stand 7
It corresponds to the shape of the earth and sand bucket 12 having a different shape from the above, and the inclination of the earth and sand bucket 12 is prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the overall construction of the device of the present invention. In the figure, 1 is a slab formed below the pneumatic caisson, and an opening 3 leading to a working chamber 2 is provided in this slab 1.
Are formed. A hatch container 4 is installed above the opening 3, and a storage container 5 having a lower hatch 5a that can be opened and closed and through which the excavator 6 and the earth and sand bucket 12 can pass is flange-joined. ing. Also,
A material shaft, a material lock (not shown) having an openable hatch, and the like are properly connected to the storage container 5, and the shaft is configured in this manner.

Reference numeral 7 denotes a recovery pedestal to which a wire 8 is connected, and an excavator traveling body 9 equipped with an excavator 6 is suspended below the recovery pedestal 7 in a separable manner. The excavator traveling body 9 is configured to travel along a traveling rail 10 laid on the slab ceiling. The wire 8 is connected to a winch (not shown), and when the excavator 6 is recovered, the wire 8 is wound and the recovery rack 7 is lifted. On the contrary, when the excavator 6 is carried into the working chamber 2, the wire 8 is unwound.

In this case, the recovery rack 7 is provided with, for example, a rising portion 7a on the outer peripheral portion thereof so that it can be smoothly moved up and down, and a rotatable guide roller 11 is provided at that portion. The number of the guide rollers 11 is appropriately determined depending on the size of the recovery rack 7 and the like. Further, as for the support of the guide roller 11, an appropriate attachment tool is used if necessary.

Further, as shown in detail in FIG. 2, on the inner wall of the storage container 5, a recovery rack 7 having an excavator 6, an excavator traveling body 9 and the like can be smoothly moved up and down, for example, an approximately L shape. Eggplant collection frame fixed guide 13, movable bucket guide / collection frame fixed guide 14, collection frame fixed guide 15 with movable bucket guide, and earth and sand bucket 12 smaller than the collection frame 7 are smoothed by preventing the fluff and sediment spillage. A movable bucket guide 1 that moves vertically, for example, a substantially straight rod shape
A guide device including 6 and the like is provided.

That is, the state shown by the solid line in FIG. 2 is a case where the recovery gantry 7 moves, and its guide rollers 11 are the recovery gantry fixed guide 13 and the rotary movable bucket guide / recovery gantry fixed guide 14. The guide roller contact portion 14c and the rotatable movable bucket guide-equipped recovery rack fixed guide 15 can be brought into contact with each other.

In the illustrated example, the guide roller 11 is
Since the recovery gantry 7 is provided at the four corners of the long side and the substantially central part of the short side, which face each other, of the substantially rectangular recovery gantry 7, the recovery gantry fixed guide 13 and the non-rotating movable bucket guide / recovery gantry fixed guide 14 are provided. The guide roller contact portion 14c on the side of the fixed collection base fixed guide and the fixed base fixed guide 15 with movable bucket guide are provided at the position of the inner wall surface of the storage container 5 so as to be in contact with the guide roller 11.

In this case, the movable bucket guide 16 having a substantially straight rod shape which is rotatable via the rotation axis a is in a non-rotating state and is located on the inner wall surface side of the storage container 5 so as not to obstruct the passage of the recovery rack 7. .

Further, the recovery frame fixing guides 13 provided on both sides of the recovery frame, which are always fixed, can contact the guide rollers 11 provided at the corners on the long side of the recovery frame 7.

Further, the movable bucket guide / recovery gantry fixed guide 14 which is rotatable via the rotation axis a includes a substantially straight rod-shaped recovery gantry fixed guide 14a and a substantially straight rod-shaped movable bucket extending in a branch shape at its tip. Guide 14b
The movable bucket guide / collection base fixed guide 14 is also in the non-rotating state, and the movable bucket guide 14b
Is located on the inner wall surface side of the storage container 5, and the guide roller contacting portion 14 of the tip on the side of the recovery rack fixing guide 14a is located.
c can contact with the guide roller 11 provided at the center of the short side of the recovery rack 7.

The movable bucket guide 15b of the recovery gantry fixed guide 15 with the movable bucket guide is substantially L-shaped, and is rotatable about the tip end of the substantially straight rod-shaped recovery gantry fixed guide 15a via the rotation axis a. In addition, it is in a non-rotating state when passing through the recovery gantry 7, and the tip thereof is the same as the movable bucket guide 16 and the movable bucket guide 14b of the movable buoy guide / recovery gantry fixed guide 14 in the inner circumference of the storage container 5. It is located on the face side.

As shown by phantom lines, these rotary guide members are rotated so as to guide the sediment bucket 12 when the sediment bucket 12 passes.

A movable bucket guide / collection base fixing guide 14 and the like are also provided on the lower neck of the storage container 5 as required.

Further, an optimum guide member of the guide device, for example, a movable bucket guide / recovery base fixed guide 14 is provided inside the hatch container 4, and depending on whether the recovery base 7 or the earth and sand bucket 12 passes therethrough. The position is selectively set.

A hatch 5a is provided between the hatch container 4 and the storage container 5, and pressure is constantly applied below the hatch 5a. Therefore, a rotary guide member, that is, a movable bucket guide 16, a movable bucket guide The bucket guide / collection pedestal fixed guide 14 and the movable bucket guide / collection pedestal fixed guide 15 are rotated / moved by a remote operation by a hydraulic cylinder b connected thereto. That is, one end of the hydraulic cylinder b is connected to one end of the rotary member, the other end is supported by a support member provided in the shaft, and the rotary member is rotated about the rotary shaft a by extending the hydraulic cylinder. good.

Above the hatch 5a, the hatch 5a can be closed to reduce the pressure, and the rotary guide member can be moved by an operator under atmospheric pressure. However, a hydraulic cylinder b must be provided for remote operation. You can also

FIG. 3 and FIG. 4 show a carrying-out process of earth and sand generated during excavation of the ground in the working chamber 2. In this case, since the earth and sand bucket 12 is small, the movable bucket guide 16, the movable bucket guide / collection base fixed guide 14, and the movable bucket guide recovery base fixed guide 15 are used to guide it.
The rotary guide member such as the movable bucket guide 15b is rotated and moved by extending the hydraulic jack b.

Of the guide members constituting the guide device, the recovery rack fixed guide 13 is a non-rotating fixed type, but the movable bucket guide 16 and other movable bucket guide / recovery rack fixed guide 14 and movable bucket guide are used. It is also possible to configure like the attached recovery stand fixed guide 15.

It is needless to say that the rotary guide members are arranged so as not to collide with each other when rotated.

FIG. 5 shows another example of the recovery rack 7 of the present invention. In the above-described example shown in FIG. 1, the guide roller 11 that can come into contact with the guide device is provided, but in this example, the tip of the rising portion 7a provided on the outer periphery of the recovery rack 7 should be caught by the guide member. Instead, the sled 7b is formed so as to be slanted inward so as to be guided promptly. Therefore, in this example, the guide roller 11 is not required as compared with the above-described example, and accordingly, the configuration can be simplified and the cost can be reduced.

In the above embodiment, the guide device is provided inside the storage container 5, the hatch container 4 and the like which constitute the shaft, but it is provided only on the storage container 5 side from the viewpoint of simplification of the construction. You may do it.

A material shaft or the like is sequentially added to the upper part of the storage container 5 as the pneumatic caisson is settled to form a shaft. If necessary, a similar guide device may be provided for these material shafts. Is also good. Moreover, it goes without saying that the invention can be applied to other than the recovery rack 7 and the earth and sand bucket 12.

[0030]

As described above, according to the present invention, in the case where objects of different shapes are hoisted and hung down by the same shaft, the guide devices for guiding the objects of different shapes are provided in the shafts. When one of the shaped objects is the recovery stand 7, its lifting and hanging can be performed safely, and when the other object is the earth and sand bucket 12, its inclination can be prevented and the object can be surely moved up and down. There is an effect that can be done.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the overall configuration of an embodiment of the present invention and is an explanatory diagram of a recovery state of a recovery rack.

FIG. 2 is an explanatory view of the internal configuration of the storage container in the recovery stage recovery state according to the present invention as viewed from above.

FIG. 3 is an explanatory diagram of the overall configuration of the present invention when the earth and sand bucket is lifted and when it is suspended.

FIG. 4 is an explanatory view of the internal configuration of the storage container at the time of suspending and suspending the earth and sand bucket according to the present invention as seen from a plane.

FIG. 5 shows another example of the recovery rack used in the present invention.

[Explanation of symbols]

 1 Pneumatic caisson slab 2 Working room 3 Opening 4 Hatch container 5 Storage container 5a Hatch 6 Excavator 7 Recovery platform 7a Start-up part 7b Soil 8 Wire 9 Excavator running body 10 Traveling rail 11 Guide roller 12 Sediment bucket 13 Recovery Frame fixed guide 14 Movable bucket guide and collection frame fixed guide 14a Collection frame fixed guide 14b Movable bucket guide 14c Guide roller contact part 15 Collection frame fixed guide with movable bucket guide 15a Collection frame fixed guide 15b Movable bucket guide 16 Movable bucket guide

Claims (1)

[Claims] 1. In a pneumatic caisson that allows objects of different shapes, such as a recovery stand on which an excavator is suspended and a sand bucket for discharging excavated sediment, to pass through the same shaft, the shape of the objects of different shapes that pass through is supported. A pneumatic caisson characterized by having a movable guide device inside the shaft.