JP2009144355A - Pneumatic caisson - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pneumatic caisson which can stably lift up/down a caisson excavator without rocking, when the caisson excavator is carried in/out through a space between a work chamber and a maintenance lock. <P>SOLUTION: The pneumatic caisson is constructed by forming a work chamber slab and an upper slab in a caisson skeleton body, securing the work chamber under the work chamber slab, arranging the maintenance lock for recovering the caisson excavator, between the work chamber slab and the upper slab, and forming an opening section for passing the caisson excavator, between the work chamber and the maintenance lock. When the caisson excavator is passed from the work chamber via the opening section to be lifted to the maintenance lock, in order to stably lift the caisson excavator, positioning devices, guide devices, a tilting correction device, and an excavator fixing device are set on a hanging mount, and the hanging mount is lifted by using a plurality of winding devices. In this manner the caisson excavator is lifted in a stable manner at every moment. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pneumatic caisson including a lifting mount for a caisson excavator that can raise and lower the caisson excavator in a stable state when the caisson excavator is recovered from the work chamber of the caisson housing main body to a maintenance lock. .

  Conventionally, this type of pneumatic caisson has a work room formed in the lower part of the caisson chassis main body, and the caisson excavator carried in the work room is operated in the remote control room on the ground to excavate the ground. Let it sink. When this caisson excavator is inspected, maintained, or recovered, it is moved from the work room to the maintenance lock above the slab and recovered.

  When collecting, the hoisting rope of the mobile crane on the ground is connected to a lifting platform that raises and lowers the caisson excavator, and the lifting platform is slab-opened while visually checking the caisson lifting status with a hoisting cable with a surveillance camera. The caisson excavator is recovered from the maintenance lock side, and the caisson excavator is collected in the maintenance lock so that the necessary work can be performed there.

  However, in the conventional pneumatic caisson, when the caisson excavator is lifted, since there is no guide means for stably lifting the caisson excavator, the caisson excavator cannot be lifted and lowered in a stable state.

There is also a pneumatic caisson provided with guide means, but the structure of the guide means is complicated, the assemblability is poor, and the cost is high.
Patent No. 1885132

  The present invention has been proposed in view of the above, and the object of the invention is to stabilize the caisson excavator when the caisson excavator is lifted from the work chamber to the maintenance lock through the opening formed in the slab. An object of the present invention is to provide a pneumatic caisson provided with a guide means having a simple configuration that can be moved up and down in a state.

In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that a work chamber (5) for performing excavation work by a caisson excavator (7) is formed in the lower part of the side wall (2), and above the work chamber (5). A working chamber slab (4) having an opening (15) is formed, and a maintenance lock (6) is formed above the working chamber slab (4), and a caisson excavator (7 in the working chamber (5) is formed. In a pneumatic caisson that can be recovered on the maintenance lock (6) side using a lifting stand (8) provided in the opening (15) portion,
A guide bar (22) is provided in the height direction on the inner peripheral wall of the opening (15), and the lifting mount (8) is swung along the guide bar (22). A guide device (9) that moves up and down without being provided is provided, and an inclination correcting device (12) for measuring the posture of the lifting frame is provided at substantially the center, and a plurality of lifting brackets (11) are provided around it. A plurality of hoisting devices (18) are provided on the maintenance lock (6) side, provided at intervals, connected to these suspension fittings (11), and moving up and down the lifting mount (8). To do.
According to a second aspect of the present invention, in the pneumatic caisson according to the first aspect, the guide device (9) is a pair of steel plates (9a) and the steel plate (9a) is rotated via a support pin (9c). It comprises guide wheels (9b) that can be provided and roll along the guide bar (22).
According to a third aspect of the present invention, in the pneumatic caisson according to the first aspect, a caisson excavator (7) transferred from a work room slab (4) of the work room (5) is fixed to the lifting mount (8). An excavator fixing device (23) is provided.
According to a fourth aspect of the present invention, there is provided the pneumatic caisson according to the third aspect, wherein the excavator fixing device (23) is provided at a lower portion of the jack (29) and the jack (29), and is mounted on the traverse base (32). A fixed pin (29a) that can be engaged with the fixed plate (31) provided is provided.

According to the first aspect of the present invention, the guide means has a simple configuration including the guide bar 22 and the guide device 9 that moves along the guide bar 22, and is driven while adjusting a plurality of hoisting devices. Thus, the lifting platform 8 can be moved up and down almost horizontally in a stable state.
According to the second aspect of the present invention, the guide device 9 has a simple configuration including the rotatable guide wheel 9b attached to the steel plate 9a, so that it is easy to manufacture and prevents an increase in equipment cost. it can.
According to the third and fourth aspects of the present invention, the caisson excavator 7 transferred to the lifting mount 8 can be easily fixed by the excavator fixing device 23 having a simple configuration, and can be moved up and down in a stable state.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic front view showing an overall configuration of a pneumatic caisson according to the present invention.

  In the present invention, a guide with a simple configuration is provided on the lifting frame 8 and the inner peripheral surface of the slab opening 15 of the caisson excavator 7, and a guide with a simple configuration for stably raising and lowering the caisson excavator 7 by a plurality of hoisting devices. The main feature is that the means is provided.

  That is, a concrete pneumatic caisson 1 includes a side wall 2 and a blade mouth 3 integrally formed therebelow, and is partitioned by a working chamber slab 4 at the lower part of the side wall 2 and inside the blade mouth 3. A work chamber 5 is formed. A maintenance lock 6 is formed above the work chamber slab 4, and the caisson excavator 7 in the work chamber 5 is lifted to the maintenance lock 6 and collected in the work chamber slab 4, or the caisson in the maintenance lock 6. A lifting stand 8 for suspending the excavator 7 is provided.

  FIG. 1 shows a state where the caisson excavator 7 in the work chamber 5 is lifted to the maintenance lock 6 side. Therefore, the caisson excavator 7 and the lifting mount 8 on the working chamber 5 side are indicated by broken lines, and the caisson excavating machine 7 and the lifting mount 8 on the maintenance lock 6 side are indicated by solid lines.

  A first traverse rail S1 is provided at the lower portion of the lifting platform 8, and the caisson excavator 7 is positioned below the first traversing rail S1 via the traversing platform 32. The caisson excavator 7 can be raised and lowered as the gantry 8 is raised and lowered. As is well known, traveling wheels are provided on the upper part of the traverse frame 32.

  A guide device 9 is provided on the outer periphery of the upper surface of the lifting mount 8. The guide device 9 moves up and down along a guide bar 22 described later. The configuration, arrangement state, guide bar 22 and the like of the guide device 9 will be described later with reference to FIG.

  A plurality of positioning devices 10 and suspension brackets 11 are provided on the upper surface of the lifting frame 8, and an inclination correcting device 12 is provided at substantially the center of the upper surface of the lifting frame 8.

  Reference numeral 13 denotes a remote operation room provided on the ground side. In the remote operation room 13, a monitor screen and various control devices for monitoring and controlling the posture and the lifting state of the lifting mount 8 are provided. The state of the lifting mount 8 is operated via them.

  In the work chamber slab 4, an opening 15 for carrying the caisson excavator 7 into and out of the work chamber 5 is formed. The opening 15 corresponds to the first inner peripheral wall 16 (long side) having a length corresponding to the length dimension of the caisson excavator 7, and more specifically to the width dimension of the caisson excavator 7 shown in FIG. The second inner peripheral wall 17 (short side) is shorter than the first inner peripheral wall 16. That is, the opening 15 has a substantially rectangular shape composed of a pair of long sides and a pair of short sides, and the first inner peripheral walls 16 and the second inner peripheral walls 17 are arranged to face each other.

  A well-known airtight hatch of an appropriate configuration that can open and close the opening 15 is provided in the opening 15 portion of the working chamber slab 4 although not particularly shown. Such hatch structures are well known in this type of technical field.

  Reference numeral 18 denotes a hoisting device for raising and lowering the lifting mount 8, and a plurality of hoisting devices 18 are provided on the slab 19 side on the maintenance lock side, corresponding to a plurality of suspension fittings 11 described later. Reference numeral 20 denotes an opening formed in the slab 19 on the maintenance lock side.

  FIG. 2 is a longitudinal sectional view along the second inner peripheral wall 17 when the pneumatic caisson is viewed from the right side in the state of FIG. 1, that is, when the caisson excavator 7 is viewed from the rear side.

  In the figure, S2 is a second traverse rail for running the caisson excavator 7 laid on the ceiling surface of the slab 4, 21 is a fixed base provided on the first inner peripheral wall 16 of the opening 15 of the slab 4, When the positioning device 10 provided on the upper part of the lifting base 8 comes into contact with the fixed base 21, the downward movement of the lifting base 8 that has been suspended is stopped. The first inner peripheral wall 16 is provided with a guide bar 22 extending in the height direction from below to above. And the guide apparatus 9 moves along this guide bar 22, and the lifting stand 8 in which the 1st traverse rail S1 was provided in the lower part is raised / lowered in the stable state.

  Next, FIGS. 3-7 which show the detail of a structure of the steel lifting mounts 8 are demonstrated.

  FIG. 3 is a plan view of the lifting mount 8 showing the arrangement of the positioning device 10, the guide device 9, the inclination correcting device 12, the excavator fixing device 23, the lifting bracket 11, and the like.

FIG. 4 shows a side view of the lifting stand as seen from the section aa in FIG.
FIG. 5 shows the bb cross section.
FIG. 6 shows the cc cross section.
FIG. 7 shows a configuration of the excavation fixing device 23, (a) the figure shows a fixed state, and (b) the figure shows a released state.

  As shown in FIG. 3, the lifting frame 8 includes a first lifting frame member 24 made of a rod-shaped steel material that extends along a pair of first inner peripheral walls 16 that define the opening 15, and the first lifting frame member 24. Second to fourth lifting mount members 25 to 27 made of the same rod-shaped steel material extending orthogonally to the lifting mount member 24 and extending toward the first inner peripheral wall 16, and second and third lifting mount members 25, And a fifth lifting gantry member 28 extending perpendicularly at the substantially central portion of the rim 26.

  A pair of first lifting gantry members 24 are provided, and one first lifting gantry member 24 is arranged substantially parallel to the inside of the first inner peripheral wall 16 with a space therebetween. The other first lifting gantry member 24 is arranged substantially parallel to the inside of the other first inner peripheral wall 16 on the opposite side opposite to the one second inner peripheral wall 17 with a space therebetween. .

  The second lifting frame member 25 is located on the right side in the illustrated state.

  The third lifting mount member 26 is provided inside the second lifting mount member 25 with a gap therebetween.

  The fourth lifting gantry member 27 is provided on the outer side of the third lifting gantry member 26 with a space therebetween. In other words, the third lifting mount member is provided inside the second and fourth lifting mount members 25 and 27.

  The first lifting frame member 24 and the fifth lifting frame member 28 are integrated with the second lifting frame member 25 and the third lifting frame member 26 via bolts, nuts, etc., and their upper surfaces are It is almost the same. For integration, welding may be used instead of bolts and nuts.

  The overhanging frame members 100 and 101 are joined to the second lifting frame member 25 by welding, and the overhanging frame members 102 and 103 are welded to and integrated with the third lifting frame member 26. Their upper surfaces are almost flush. In addition, you may integrate with a volt | bolt, a nut, etc. instead of welding.

  The fourth lifting frame member 27 is joined to and integrated with the extending frame member 102 and the extending member 103 by welding, and their upper surfaces are substantially flush. In addition, you may integrate with a volt | bolt, a nut, etc. instead of welding.

  The pair of first lifting mount members 24 and the like are substantially parallel. The second to fourth lifting gantry members 25 to 27 are also substantially parallel, and a fifth lifting gantry member 28 extending orthogonally is provided at substantially the center of the second and third lifting gantry members 25 and 26. In the state shown in FIG. 3, each end of the fifth lifting mount member 28 protrudes outside the second and third lifting mount members 25 and 26, and the fifth lifting mount member 28 is substantially parallel to the first lifting frame member 24.

  As shown in FIGS. 1 and 3 to 6, guide devices 9 are provided at the upper ends of both ends of each first lifting mount member 24 toward the one and the other first inner peripheral wall 16. .

  The guide device 9 has a base end bottom portion fixed to the overhanging base members 100 to 103 and a pair of steel plates 9a disposed apart from each other, and the outside of the pair of steel plates 9a, that is, one and the other There are provided at least one or more rotatable guide wheels 9b provided toward the first inner peripheral wall 16 side, and support pins 9c that rotatably support the guide wheels 9b.

  The guide wheels 9b are in contact with the guide bars 22 provided on the first inner peripheral wall 16 on the other side in a rotatable manner. In this example, the guide wheels 9b are respectively provided above and below as shown in FIG. 6, but may be appropriately increased or decreased according to the scale.

  As shown in FIGS. 2, 3, and 5, a space is provided between each end of the second and third lifting mount members 25, 26 and each first inner peripheral wall 16 side, and FIG. As shown in FIGS. 1 to 5, a substantially L-shaped positioning device 10 is provided in the upper part. The lower end portion 10a of the positioning device 10 can be placed on the upper surface of the fixed base 21 provided at the lower portion of the first inner peripheral wall 16, whereby the lowering position of the lifting base 8 is positioned. The

  In addition, the hanging metal fittings 11 are provided at the upper portions of the intersections of the second and fourth lifting mount members 25 and 27 and the first lifting mount member 24, respectively. In this embodiment, the hanging metal fittings 11 are provided at four locations for raising and lowering the lifting platform 8 in a balanced manner. However, the positions thereof can be changed depending on the scale, and the number can be appropriately increased or decreased.

  Further, as shown in FIG. 4, a first traverse rail S <b> 1 is provided at a lower position of the second and third lifting mount members 25 and 26.

  As shown in FIG. 3, the excavator fixing device 23 is provided on the upper flange 104 of the traversing rail S1.

  As shown in FIGS. 7A and 7B, the excavator fixing device 23 includes a jack 29 and a jack fixing plate 30 for fixing the jack 29 to the second and third lifting mount members 25 and 26. The fixing pin 29a is provided in the lower part of the jack 29, and this fixing pin 29a can be connected to the fixing plate 31 of the traverse base 32 by operating the jack 29 so that the connected state can be released. It has become. In FIGS. 7A and 7B, reference numeral 104 denotes a flange. This is because the transverse rails S1 and S2 have the same shape to facilitate transfer, and when the excavator is suspended on the transverse rail S1, the lifting platform 8 is prevented from being bent through the flange 104 so that the lifting platform 8 does not bend. And the traverse rail S1 are integrated.

  As shown in FIG. 1, the caisson excavator 7 is suspended from the lower part of the traverse frame 32.

  When the caisson excavator 7 is moved up and down, as shown in FIG.

  As shown in FIG. 3, whether or not the lifting mount 8 is inclined is measured at the upper part of the fifth lifting mount member 28 and close to the third lifting mount member 26, and this state is indicated in the remote control room. An inclination correcting device 12 for outputting to the 13th side is provided. As shown in FIGS. 1 to 5, the inclination correcting device 12 is provided at a substantially central portion of the lifting mount 8.

  Next, the operation of the present invention will be described.

  In the process where the caisson excavator 7 is suspended via the traveling rail S3 on the transverse rail 32 suspended on the transverse rail S2 laid on the ceiling of the work room, for example, when there is a need for inspection and maintenance, The caisson excavator 7 is moved to the traverse rail S1 side of the lifting platform 8 via the traverse rail S2 by remote operation from the remote operation chamber 13.

  The transverse rail S1 of the lifting platform 8 is attached to a position where the caisson excavator 7 of the transverse rail S2 can transfer to the transverse rail S1.

  When the caisson excavator 7 moves across the traverse rail S2 and moves to the center of the traverse rail S1 on the lifting stand 8 side, the caisson excavator 7 is stopped at a predetermined position by a proximity sensor (not shown).

  The proximity sensor may be attached to the fixed base 21 side of the lifting base 8 or the lifting base 8 side.

  When the caisson excavator 7 reaches a predetermined position and stops, the jack 29 made of hydraulic, air, or an electric cylinder extends, and a fixing pin 29a attached to the tip of the jack 29 fixes the traverse base 32 of the caisson excavator 7. The caisson excavator 7 enters the pin hole (not shown) of the plate 31 and is fixed to the lifting frame 8 (FIG. 7A).

  On the other hand, a positioning device 10 is attached to the lifting frame 8, and a total of four positioning devices 10 are attached to the lifting rail 8 in the front, rear, left and right directions in parallel to the transverse rail S1 attached to the lifting frame 8. When the positioning device 10 has been lowered, a proximity sensor that is in contact with the fixed base 21, that is, has landed and detects that it is in a predetermined position is attached.

  The lifting mount 8 fixed to a plurality of fixing bases 21 via the positioning device 10 has a plurality of lifting hardware 11, and a plurality of hoisting devices 18 provided corresponding to the lifting hardware 11. A chain (which may be a wire) a is connected.

  By driving the hoisting device 18, the chain (which may be a wire) a is wound up, and the lifting mount 8 is lifted accordingly. In this case, the tilt correcting device 12 is moved in order to move the lifting mount 8 up and down horizontally. Based on the output of the measured values, the hoisting and lowering operations of the plural hoisting devices 18 are adjusted on the remote operation room 13 side.

  In the lifting process, the lifting platform 8 is moved up along the guide bar 22 by the guide device 9 without being laterally shaken, and accompanying this, the caisson excavator securely fixed to the transverse platform 32 by the excavator fixing device 23. 7 is recovered from the working chamber 5 to the maintenance lock 6 side in a stable state via the lifting mount 8. On the maintenance lock 6 side, the plurality of hoisting devices 18 are adjusted as described above.

  The recovered caisson excavator 7 is subjected to necessary work in the maintenance lock 6.

  When the work is finished and the caisson excavator 7 in the maintenance lock 6 is carried into the work chamber 5, the work is performed in the reverse procedure, and the positioning device 10 of the lifting mount 8 comes into contact with the fixed base 21 and has landed. When detected by the proximity sensor, the jack 29 may be operated to release the engagement between the fixing pin 29a and the fixing plate 31, as shown in FIG.

  An opening 20 is formed in the maintenance lock side slab 19, and the lifting mount 8 can be carried in and out through the opening 20 between the ground and the maintenance lock 6 through a shaft (not shown). Therefore, the lifting mount 8 has a structure that can be divided.

The longitudinal cross-sectional view of the pneumatic caisson of this invention is shown. It is a longitudinal cross-sectional view of the pneumatic caisson of this invention, Comprising: The state which looked at the caisson excavator from the back side in the state which looked at the state of FIG. 1 from the orthogonal direction is shown. The top view of the lifting mount frame of this invention is shown. It is the sectional view on the aa line in FIG. FIG. 5 is a sectional view taken along line bb in FIG. 3. FIG. 4 is a sectional view taken along line cc in FIG. 3. (A) is explanatory drawing of an excavator fixing device, Comprising: A fixed state, (b) shows a cancellation | release state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pneumatic caisson 2 Side wall 3 Cutting edge 4 Work room slab 5 Work room 6 Maintenance lock 7 Caisson excavator 8 Lifting mount 9 Guide device 10 Positioning device 11 Hanging bracket 12 Inclination correction device 13 Remote operation room 14 Worker 15 Opening 16 First inner peripheral wall 17 Second inner peripheral wall 18 Hoisting device 19 Maintenance lock side slab 20 Opening portion 21 Fixing base 22 Guide bar 23 Excavator fixing device 24 First lifting base member 25 Second lifting base member 26 First 3 Lifting frame member 27 Fourth lifting frame member 28 Fifth lifting frame member 29 Jack 29a Fixing pin 30 Jack fixing plate 31 Fixing plate 32 Traverse frame 100 to 103 Outer end portion of each first lifting frame member

Claims (4)

A working chamber (5) for performing excavation work by the caisson excavator (7) is formed in the lower part of the side wall (2), and a working chamber slab (4) having an opening (15) above the working chamber (5) is formed. A lifting platform is formed and a maintenance lock (6) is formed above the working chamber slab (4), and the caisson excavator (7) in the working chamber (5) is provided at the opening (15) portion. In the pneumatic caisson that can be recovered to the maintenance lock (6) side using (8),
A guide bar (22) is provided in the height direction on the inner peripheral wall of the opening (15), and the lifting mount (8) is swung along the guide bar (22). A guide device (9) that moves up and down without being provided is provided, and an inclination correcting device (12) for measuring the posture of the lifting frame is provided at substantially the center, and a plurality of lifting brackets (11) are provided around it. A plurality of hoisting devices (18) are provided on the maintenance lock (6) side, provided at intervals, connected to these suspension fittings (11), and moving the lifting mount (8) up and down. Pneumatic caisson.   The pneumatic caisson according to claim 1, wherein the guide device (9) is provided with a pair of steel plates (9a), and is provided rotatably on the steel plate (9a) via support pins (9c), and A pneumatic caisson comprising a guide wheel (9b) rolling along a guide bar (22).   2. The pneumatic caisson according to claim 1, wherein the excavator fixing device for fixing the caisson excavator (7) transferred from the work chamber slab (4) of the work chamber (5) to the lifting mount (8). (23) Pneumatic caisson characterized by being provided.   The pneumatic caisson according to claim 3, wherein the excavator fixing device (23) is provided with a jack (29) and a fixing plate (31) provided at a lower part of the jack (29) and provided on a traverse base (32). And a fixing pin (29a) which can be engaged with the pneumatic caisson.

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