JP6139627B2 - Open shield machine - Google Patents

Description

  The present invention relates to an open shield machine in which a box suspension facility with a gate-type frame is provided above a box installation portion.

The inventor previously obtained a patent for an open shield machine that can be easily and quickly suspended without taking up space.
Japanese Patent No. 3194190

  As shown in FIGS. 8 and 9, the open shield machine 1 includes a front surface, a rear surface, and an upper surface including left and right side wall plates 1 a, 1 a and a bottom plate 1 b that is approximately the same length as the side wall plates 1 a, 1 a and connects between them. Is a shield machine that is divided into partition walls 4 in the front-rear direction of the machine body, and the front part is mainly a drilling part 2 for excavation, and the rear part is a box installation part 3 that is installed by hanging a concrete box. The shield jacks 5 are arranged in a plurality of stages on the front and rear sides, with the shield jacks 5 facing left and right.

  A concrete box for hanging a concrete box, in which a hoisting machine 18 such as a chain block is provided on a frame 17 composed of a column 15 and a beam 16 above the box installation part 3 of the open shield machine 1 so as to be movable back and forth and left and right. The vertical crane 19 was erected.

  Various mechanisms can be considered for the longitudinal and lateral movements of the hoisting machine 18, but the hoisting machine 18 spans the rail member 20 that moves by a self-propelled wheel or the like on the frame 17 in the width direction of the open shield machine 1, The rail member 20 can be moved by a self-propelled wheel or the like using the beam member 16 provided in the front-rear direction of the open shield machine 1 on the frame 17 as a rail.

  Further, the beam 16 extends forward and rearward, and a lifting part 25 is projected in front of the open shield machine 1 and a concrete box lifting part 21 is projected in the rear. The lifting portion 25 and the concrete box lifting portion 21 are portions where the hoisting machine 18 can move in the front-rear direction. In the figure, 24 is a hanging jig for the concrete box 8.

  There are four struts 15, each of which is set up from the open shield machine 1 via the jack 22 so that the inclination can be corrected.

  In this way, when the excavator 7 excavates and removes earth and sand from the front surface or the upper surface of the excavating part 2 and the open shield machine 1 moves forward, the portal crane 19 also moves.

  Then, the concrete box 8 for suspending is carried down to the concrete box lifting part 21 with a carriage 23 or the like using the upper surface of the existing concrete box 8 arranged in a row as a carry-in path, and is suspended by the hoisting machine 18 and opened. The shield machine 1 is moved to above the box setting unit 3 at the rear of the shield machine 1 and suspended in the box setting unit 3.

  Further, the hoisting machine 18 can be used during excavation, and the hoisting machine 18 is moved to the hoisting part 25 protruding in front of the open shield machine 1, and a bucket or the like (not shown) is suspended from the hoisting machine 18. Then, the earth and sand excavated by an excavator such as a backhoe near the excavation part 2 can be received by a bucket or the like, moved rearward as it is, and transshipped to a dump or the like.

  In addition, the open shield construction method using the open shield machine 1 by the open shield machine 1 is constructed between the start pit 6 and the arrival pit 13 when an example thereof is described with reference to FIGS. The open shield machine 1 is assembled in the start pit 6 and the front or inside of the excavation part 2 is excavated by a shovel excavator 7 such as a backhoe in which the ground in front of the start pit 6 is installed on the ground. 1 of the shield jack 5 is extended to take a reaction force against the reaction force wall 9 in the start pit 6 to advance the open shield machine 1, and the first concrete box 8 forming the underground structure is boxed from above. It is suspended in the body installation part 3. In addition, although illustration is abbreviate | omitted, when the space | interval between the reaction force wall 9 and the shield jack 5 is large, the strut 10 is arrange | positioned.

  Further, the start pit 6 is constituted by a retaining wall made of sheet piles such as a sheet pile, and in order to start the open shield machine 1, a part of this retaining wall is mirror-cut. The ground improvement 11 may be given to the front part.

  Next, similarly, the excavator 7 excavates the earth and sand from the front surface or the upper surface of the excavation part 2 and removes the soil to advance the open shield machine 1, and the second concrete is placed in front of the first concrete box 8. The box 8 is suspended in the box setting unit 3. Thereafter, the same excavation and setting process of the concrete box 8 are repeated, and the concrete boxes 8 are successively buried in the column in the ground, and backfilling 14 is performed on the concrete box 8 at the rear by a dump, and an open shield machine When 1 reaches the reaching mine, it is disassembled and removed to complete the construction.

  The open shield machine 1 is divided into a front part and a tail part in the front-rear direction, and the front part of the tail part is inserted into the rear part of the front part, and the front part of the open shield machine 1 is directed rearward. A folding jack is provided so that the front part and the tail part can be bent at the mating part to form a middle folding part, and the latter half of the tail part is used as a box installation part. May be arranged in a plurality of stages.

  The open shield machine 1 proceeds while correcting the direction, pitching, and rolling. However, when the open shield machine 1 is tilted when the concrete box 8 is suspended, the portal crane 19 is also tilted. However, in Patent Document 1, the work is performed after the four jacks 22 are appropriately expanded and contracted so that the portal crane 19 becomes horizontal while looking at the inclinometer.

  Thus, in order to cope with the inclination of the portal crane 19 with respect to the pitching and rolling of the open shield machine 1, the four cranes 22 are appropriately expanded and contracted so that the portal crane 19 becomes horizontal while looking at the inclinometer. However, the correction was quite difficult.

  The object of the present invention is to use the jack for pitching and rolling of an open shield machine in an open shield machine that eliminates the inconveniences of the conventional example and provides a box suspension facility with a frame above the box installation part. It is to provide an open shield machine that can easily and reliably correct the inclination of the frame.

In order to achieve the above object, the present invention according to claim 1 is an open shield machine in which a box suspension facility is provided above the box installation part, and the lower end of the column forming the frame is bolted to the open shield machine. However, the gist of the invention is that a bevel angle adjusting material for the taper plate, which becomes thinner toward the tip, is interposed between the lower end of the support column and the open shield machine.

  According to the first aspect of the present invention, the lower end of the column that forms the frame is bolted to the open shield machine, and the frame can be easily and firmly installed. At that time, the angle adjustment material of the taper plate is inserted from the side. It can be placed upright to support the tilt of the open shield machine.

  The gist of the present invention described in claim 2 is that the bevel adjustment material is formed with a notch slit opened at the end as a bolt insertion hole.

  According to the second aspect of the present invention, the bevel angle adjusting material can be arranged while being inserted through the bolt by the notch slit, and the bevel angle can be adjusted with a single plate.

  The gist of the present invention described in claim 3 is that the bevel angle adjusting material is provided with a diameter-enhancing convex portion for preventing slippage at the edge of the thinner tip.

  According to the third aspect of the present invention, when the bevel angle adjusting material is clamped with a bolt, the deviation in which the enlarged diameter convex portion is located outside the joint and the bevel angle adjusting material returns in the insertion direction. Can be prevented.

  The gist of the present invention described in claim 4 is that a bolt / nut for bolting the lower end of the support and the open shield machine is provided with a bevel adjustment washer having a taper opposite to the bevel adjustment member.

  According to the fourth aspect of the present invention, when the tilt of the open shield machine is increased, the bottom end of the support and the bolt and nut that stops the open shield machine are also tilted, and the bolt may not be sufficiently tightened. Tightening can be secured by interposing a bevel adjustment washer.

  In the fifth aspect of the present invention, the open shield machine is provided with a flange for installation, while the lower end of the column is provided with a flange for joining, and a bolt for adjusting the gradient is provided along with the flanges. This is the gist.

  According to the fifth aspect of the present invention, the inclination of the column forming the frame with respect to the open shield machine can be easily adjusted as a screw jack with a bolt for adjusting the gradient.

  As described above, the open shield machine according to the present invention uses a jack for pitching and rolling of the open shield machine 1 in the open shield machine provided with the box hanging equipment by the frame above the box installation part. The frame inclination can be corrected easily and reliably.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a main part showing a first embodiment of the open shield machine of the present invention, and FIG. 2 is an explanatory view of a main part showing a second embodiment of the same.

  As shown in FIG. 3, the open shield machine 1 is provided with a box suspension facility by a frame above the box installation portion, and the frame 17 is composed of a column 15 and a beam member 16.

  The open shield machine 1 is provided with an installation flange 26, while a support flange 27 is provided at the lower end of the column 15, and the flange 26 and the flange 27 are fastened with bolts 29 and nuts 30.

  In the figure, 28 is an interval adjusting material.

  When pitching and rolling of the open shield machine 1 occurs, a tapered gap is generated as shown.

In the present invention, a bevel adjustment material 31 of a taper plate which is thinned for a while toward the tip is inserted between the lower end of the structure column 15 and the open shield machine 1, that is, the flange 26 and the flange 27, and this tip is arranged. A bevel angle adjusting material 31 of a taper plate that is thinned for a while is interposed.

  4 and 5 show the bevel adjustment member 31, which is a rectangular plate as a whole, and has a notch slit 33 opened at the end in a direction perpendicular to the direction of the taper that becomes thin for a while. Formed as.

  Further, the bevel angle adjusting member 31 is provided with a diameter-expanded convex portion 32 for preventing slippage at the edge of the thinner tip. An extremely short steel bar can be used for the diameter-expanded convex portion 32.

  In the figure, reference numeral 34 denotes an oblique angle adjusting washer interposed between the bolt 29 and the nut 30 together with the spring washer 35, and has a taper opposite to the oblique angle adjusting member 31.

  In this manner, the bevel adjustment member 31 is inserted between the flange 26 and the flange 27 from the side, and the bolt 29 and the nut 30 are fastened.

  As shown in FIG. 4, there are a plurality of the bevel angle adjusting members 31 depending on the taper angle. By appropriately selecting and complementing the taper-shaped gap, the support 15 is upright even when the open shield machine 1 is inclined. Can be made.

  FIG. 1 shows the case where the spacing adjusting material 28 is not used, and FIG. 2 shows the case where it is used.

  Note that a gradient adjusting bolt 36 is provided so as to straddle the installation flange 26 provided in the open shield machine and the joining flange 27 provided at the lower end of the support column 15. The tilt of the can be adjusted.

  The bolt 36 for adjusting the gradient constitutes a so-called screw jack, passes through a nut 38 provided on a support plate 37 projecting on the flange 27 side, and abuts a pressure receiving plate 39 projecting on the flange 26 side. .

  By adjusting the protruding length of the bolt 36 from the nut 38 in this way, the separation distance between the flange 26 and the flange 27 (inclination of the column 15) can be adjusted.

It is explanatory drawing of the principal part which shows 1st Embodiment of the open shield machine of this invention. It is explanatory drawing of the principal part which shows 2nd Embodiment of the open shield machine of this invention. It is explanatory drawing with the frame which provides an open shield machine and box suspension equipment. It is a side view of a bevel angle adjusting material. It is a top view of a bevel angle adjusting material. It is explanatory drawing of a bevel angle adjustment washer. It is explanatory drawing of the frame which provides the open shield machine provided with the bolt for gradient adjustment, and a box suspension equipment. It is a side view which shows a prior art example. It is a front view which shows a prior art example. It is a vertical side view of the 1st process which shows the outline | summary of an open shield construction method. It is a vertical side view of the 2nd process which shows the outline | summary of an open shield construction method. It is a vertical side view of the 3rd process which shows the outline of an open shield construction method. It is a vertical side view of the 4th process which shows the outline of an open shield construction method.

DESCRIPTION OF SYMBOLS 1 ... Open shield machine 1a ... Side wall plate 1b ... Bottom plate 2 ... Excavation part 3 ... Box installation part 4 ... Bulkhead 5 ... Shield jack 6 ... Starting pit 7 ... Excavator 8 ... Concrete box 9 ... Reaction force wall 10 ... Strut DESCRIPTION OF SYMBOLS 11 ... Ground improvement 12 ... Truck crane 13 ... Arrival mine 14 ... Backfill 15 ... Post 16 ... Beam material 17 ... Frame 18 ... Hoisting machine 19 ... Portal crane 20 ... Rail member 21 ... Concrete box lifting part 22 ... Jack 23 ... Bogie 24 ... Lifting jig 25 ... Lifting portion 26 ... Flange 27 ... Flange 28 ... Spacing adjustment material 29 ... Bolt 30 ... Nut 31 ... Bevel adjustment member 32 ... Expanding convex portion 33 ... Notch slit 34 ... Oblique angle Adjustment washer 35 ... Spring washer 36 ... Slope adjustment bolt 37 ... Support plate 38 ... Nut 39 ... Pressure receiving plate

Claims (5)

In an open shield machine that has a box suspension equipment with a frame above the box installation part, the lower end of the column that forms the frame is bolted to the open shield machine, but between the lower end of the frame column and the open shield machine An open shield machine characterized by interposing a bevel adjustment material for the taper plate, which becomes thinner for a while toward the tip.   2. The open shield machine according to claim 1, wherein the oblique angle adjusting material is formed with a notch slit opened at an end as a bolt insertion hole.   The open shield machine according to claim 1 or 2, wherein the bevel angle adjusting member is provided with an enlarged convex portion for preventing slippage at an edge of the thinner tip.   The open shield machine according to any one of claims 1 to 3, wherein a bevel adjusting washer having a taper opposite to the bevel angle adjusting material is interposed between a bolt and a nut for bolting the lower end of the support and the open shield machine.   The open shield machine is provided with a flange for installation, while a flange for joining is provided at the lower end of the support column, and a bolt for adjusting the gradient is provided along these flanges. An open shield machine according to any one of the above.

Images