JP2009074334A - Continuous underground wall construction equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide continuous underground wall construction equipment which can be applied to an extremely narrow place capable of being occupied as a construction space, a place such as blind alley, and such a place under constraints on the construction space as the end of a narrow construction working zone. <P>SOLUTION: This continuous underground wall construction equipment 10 comprises: a base machine 12 which is provided on a base carrier 11 and equipped with a hydraulic unit, a power source unit and an operation room; a frame 13 which is arranged above the base machine 12; a movable truck 15 which is provided in such a manner as to be movable along a rail 14 provided on the frame 13; a revolving frame 16 which is revolvably provided on the movable truck 15; a cutter unit 18 which is ascendingly and descendingly suspended at the leading end of a boom 17 provided on the revolving frame 16; and a reel 20 which is provided on the revolving frame 16 so as to take up and pay out a hose 19 and a cable. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a continuous underground wall construction apparatus, and more particularly to a construction apparatus for performing ground excavation and in-situ agitation in the construction of a continuous underground wall.

  As a construction device for ground excavation and in-situ agitation when constructing a continuous underground wall, a base machine can be turned on a crawler, and a horizontal multi-axis cutter unit is placed in front of this base machine. is there. In such a construction apparatus, the crawler can be arranged in parallel or perpendicular to the underground continuous wall, while the base machine is always installed in a direction perpendicular to the underground continuous wall. For this reason, in addition to the length of the base machine, the necessary dimensions to the construction site become the occupied space, which may not be applicable when the construction space is narrow.

  Patent Document 1 describes a continuous underground wall construction apparatus that can be applied to places where construction space is restricted. In this construction equipment, a hoisting telescopic boom is provided on the crawler base, and a horizontal multi-axis cutter unit is lifted and lowered at the tip of the hoisting telescopic boom, and the cutter unit is rotated about a vertical axis by a rotatable joint. It is free to move. With this, if the angle is adjusted by rotating the cutter unit around the vertical axis, the construction device's gantry straddles the construction site of the continuous underground wall (arrangement of the gantry parallel to the underground continuous wall) It becomes possible to construct with. However, when a continuous underground wall is constructed along the site boundary line, it is impossible to dispose the construction device so as to straddle the construction site of the continuous underground wall.

FIG. 4 shows a conventional continuous underground wall construction apparatus 60, which is provided with a horizontal multi-axis cutter unit 62 in parallel with the base machine 61. Such a continuous underground wall construction device 60 is also assumed to be unable to construct an end portion in a place such as a dead end or a narrow construction work zone.
JP 2000-54425 A

  In view of the above-described problems of the prior art, the object of the present invention is to provide a construction space such as a place where the width that can be occupied as a construction space is extremely narrow, a place such as a dead end, or an end portion in a narrow construction work zone. It is to provide a continuous underground wall construction device that can be applied to places where there are restrictions.

  In order to solve the above problems, in the present invention, a base machine provided on a traveling body such as a crawler and provided with a hydraulic unit, a power supply unit, and an operation chamber, a pedestal arranged above the base machine, A movable carriage provided to be movable along a rail provided on the gantry, a turntable provided to be turnable on the moveable carriage, and a boom provided on the turntable can be raised and lowered. A suspended cutter unit; and a reel provided on the swivel for winding and unwinding a hose and a cable; and operating the movable carriage and the swivel to move the cutter unit to a base machine An underground continuous wall construction apparatus is provided that is freely moved in a region in front from the side.

  Here, a crawler is preferable as the traveling body, but other configurations are possible. For example, it is possible to employ a traveling body in which a structure in which an engine rotates and drives wheels via a power transmission mechanism is attached to a chassis, and the mount can be provided on the chassis. Further, the wheel may be either one that requires a rail or one that does not require a rail.

  The gantry is not particularly limited as long as it can movably support the movable carriage on the gantry, and is placed at a position higher than the base machine. The mounting location of the gantry itself may be a traveling body such as a crawler or a base machine. Further, the gantry may be provided so as to be able to turn on the traveling body.

  The boom can be formed to be extendable or non-extensible, and can be raised or lowered. When the boom can be raised and lowered, the lower end of the boom is pivotally attached to the swivel, and one end of the hydraulic cylinder is pivotally attached to the boom and the other end is pivotally attached to the swivel. It is good also as a structure which raises and lowers a boom by expansion-contraction of.

  The reel is for winding and unwinding at least one of a hydraulic hose, a cement liquid pressure feeding hose, and a pneumatic feeding hose and at least one of an electric cable and a wire cable.

In the underground continuous wall construction apparatus according to the present invention, a movable carriage is provided on a pedestal arranged above the base machine, and a swivel is provided on the movable carriage, and the cutter unit is lifted up and down from a boom on the swivel. Therefore, by operating the movable carriage and the swivel base, the cutter unit can be freely moved in the front area from the left and right sides of the base machine.
In many cases, the base machine is formed to be relatively long with respect to the longitudinal direction, while the width direction is formed to be relatively narrow. Therefore, the base machine is arranged parallel to the planned construction line of the underground continuous wall. If the cutter unit is moved along the side of the machine, the width occupied by the underground continuous wall construction apparatus can be made relatively small.
Therefore, in the excavation work such as urban civil engineering, the conventional apparatus required a work band width of 10 m or more. However, in the underground continuous wall construction apparatus of the present invention, the work band of about 6 m width on the road is extremely narrow. It becomes possible to construct soil cement underground continuous walls. By narrowing the construction occupancy width on the road, there is less lane regulation and traffic congestion can be alleviated.

  Hereinafter, although embodiment of this invention is described, this invention is not limited to this.

  The underground continuous wall construction apparatus 10 according to the present invention is an apparatus for performing ground excavation and in-situ agitation in the construction of a continuous underground wall, and as shown in FIG. A base machine 12 arranged on the base machine 12, a base 13 arranged above the base machine 12, a mobile carriage 15 provided so as to be movable along a rail 14 provided on the base 13, and a mobile carriage 15 A swivel base 16 provided so as to be capable of swiveling, a cutter unit 18 suspended at the tip of a boom 17 provided on the swivel base 16, and a hose 19 and a cable (not shown) are wound. A reel 20 provided on the swivel base 16 is provided for unwinding.

Here, a lower frame 22 is mounted on the crawler 11 via a swivel base 21, and a plurality of support columns 23 are raised from the lower frame 22, and the support platform 13 is positioned above the base machine 12 by these support columns 23. Supported. The base machine 12 is fixed to the lower frame 22 or the swivel base 21 of the crawler 11, and the lower frame 22, the base 13, and the base machine 12 can be turned together.
As shown in FIG. 3, the gantry 13 is formed in a rectangular shape by a long side portion 13a and a short side portion 13b made of a shaft member, and rails 14 are laid on the two long side portions 13a. A moving carriage 15 is provided so as to travel on the rail 14. Further, the rear end of the hydraulic cylinder 25 is fixed to the short side portion 13b on the rear side of the gantry 13 through the reaction force plate 24, and the tip of the hydraulic cylinder 25 is fixed to the movable carriage 15, and the expansion and contraction of the hydraulic cylinder 25 is extended. Thus, the movable carriage 15 is controlled to travel on the rail 14 of the gantry 13.

Wheels 26 are provided on the lower surface of the movable carriage 15 so as to be able to travel on the rail 14 of the gantry. The traveling drive means of the movable carriage 15 may be configured other than the hydraulic cylinder 25, and although not shown, for example, a motor and a power transmission mechanism are provided in the movable carriage 15, and thereby the wheels 26 are provided. It is also possible to control the drive.
A turntable 16 is provided on the movable carriage 15 via a turning device 27 including a bearing gear or the like, and the turntable 16 is configured to be capable of turning at least about 180 °. That is, the cutter unit 18 suspended from the swivel base 16 is configured to be able to swivel at least in the range from both sides of the base machine 12 and the gantry 13 to the front.

On the swivel 16, the lower ends of the boom 17 and the hydraulic cylinder 28 are pivotally attached. The upper end of the hydraulic cylinder 28 is pivotally attached to the boom 17, and the hydraulic cylinder 28 is expanded and contracted. 17 undulations are possible.
Further, a reel 20 is provided on the swivel base 16, and the reel 20 winds up a hose 19 such as a hydraulic hose, a cement liquid feeding hose and a pneumatic feeding hose, and a cable such as an electric cable and a wire cable. It is paid out. The hose 19 and the cable are connected to the cutter unit 18 through a sheave 29 (see FIGS. 1 and 2, omitted in FIG. 3) provided on the boom 17. Here, the hydraulic hose 19, the cement liquid pressure hose, the pneumatic pressure hose and the electric cable are for supplying hydraulic pressure, cement liquid, air and electricity to the cutter unit, respectively, and the wire cable is the load of the cutter unit. It is for supporting.

Since the cutter unit 18 can be a commonly used one, it is not particularly shown in detail. For example, there is a cutter unit having horizontal multi-axis rotary cutters 18b above and below the main body 18a. Such a cutter unit 18 is supported by a wire cable extending from the reel 20 on the swivel base, and rises when the wire cable or the like is wound, and descends when the wire cable or the like is fed out. In the horizontal multi-axis rotary cutter 18b, a plurality of cutter wheels are pivotally mounted on the top and bottom of the main body portion 18a by a plurality of rotary shafts. A cutter bit is attached to the cutter wheel and is supplied by hydraulic pressure supplied via a hydraulic cable. Driven by rotation.
The main body portion 18a is provided with a plurality of nozzles, and cement liquid and air supplied through the cement liquid pressure feeding hose and the pneumatic pressure feeding hose are respectively ejected from the plurality of nozzles into the ground and stirred. The main body 18a is provided with instruments such as a hydraulic meter, a tachometer, and an inclinometer, and a control device for controlling each part of the cutter unit 18, and electricity is supplied to these meters and the control device via an electric cable. Supplied.

  Since the conventional base machine 12 can be used, in FIG. 2 and FIG. 3, it is simply indicated by a one-dot chain line and is not shown in detail. For example, an operator gets on and operates the underground continuous wall construction apparatus. An operation chamber, an engine for driving the crawler, and a fuel tank for supplying fuel to the engine. In addition, a counterweight, a hydraulic control device, an electric control device, and a cooling device Etc. are included.

Next, the effect | action of the underground continuous wall construction apparatus 10 of this invention is demonstrated.
In FIG. 3, when the underground continuous wall extending linearly at the position indicated by the alternate long and short dash line 35 is constructed, the longitudinal direction of the base machine 12 and the gantry 13 is substantially parallel to the underground continuous wall. To place. Then, the movable carriage 15 is stopped at a predetermined position of the gantry 13, and the slewing platform 16 fixes the slewing angle so that the cutter unit 18 is positioned at the left side 18 </ b> A of the base machine 12 and the gantry 13. When the ground excavation and the in-situ agitation are completed at the location indicated by reference numeral 18A, the cutter unit 18 is moved to the next construction location.
When the cutter unit 18 is moved in the extending direction of the underground continuous wall, the cutter unit 18 can be moved by moving the crawler 11 forward or backward or by moving the movable carriage 15 forward or backward. . At this time, the turning angle of the turntable 16 is fixed.

Next, when the cutter unit 18 is moved to the left side of the base machine 12 and the base 13 from the position 18A to the position 18D, the turning angle of the turntable 16 is fixed and the hydraulic jack 25 is extended. The movable carriage 15 is caused to travel forward. When the cutter unit 18 moves from the position 18A to the position 18B, the movable carriage 15 is stopped. Then, by rotating the swivel base 16 by approximately 90 ° clockwise, the cutter unit 18 can swivel from the position of 18B to the position of 18D. Thus, if the cutter unit 18 is disposed in front of the base machine 12 and the gantry 13, the width occupied by the underground continuous wall construction apparatus 10 becomes a width defined by the base machine 12 or the gantry 13 and is extremely narrow. Even a passage can be passed.
Moreover, if excavation and in-situ agitation are performed by the cutter unit 18 at the position 18D, and then the swivel base 16 is rotated approximately 90 ° clockwise, the cutter unit 18 is attached to the base machine 12 and the base 13. It can be moved to the right. If the ground excavation and in-situ agitation are carried out while moving the cutter unit 18 by moving the crawler 11 forward or backward on this right side or moving the movable carriage 15 forward or backward, the comparison is made. It is also possible to construct underground walls in a flat site such as a narrow alley.

It is the figure which looked at the underground continuous wall construction apparatus of this invention from back. It is a simplified side view when the underground continuous wall construction apparatus of the present invention is viewed from the side. It is a simplified top view when the underground continuous wall construction apparatus of this invention is seen from upper direction. It is a side view which shows a prior art example.

Explanation of symbols

10 underground continuous wall construction equipment 11 crawler (running body)
12 base machine 13 mount 14 rail 15 moving carriage 16 swivel 17 boom 18 cutter unit 18A-18D cutter unit 19 hose 20 reel

Claims (3)

  A base machine equipped with a hydraulic unit, a power supply unit, and an operation room, mounted on a traveling body such as a crawler, and a base placed above the base machine, and movable along a rail provided on the base A movable carriage provided on the movable carriage, a swivel provided on the movable carriage so as to be turnable, a cutter unit suspended at the tip of a boom provided on the turntable, and a hose and a cable. And a reel provided on the swivel base for winding and unwinding, and the cutter unit can be freely moved in the front area from the left and right sides of the base machine by operating the movable carriage and the swivel. An underground continuous wall construction device characterized by allowing   The underground continuous wall construction apparatus according to claim 1, wherein the gantry is provided so as to be turnable on the traveling body.   The underground continuous wall construction apparatus according to claim 1, wherein the boom is formed so as to be undulated.

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