JP2017155484A - Connection method of multiple spindle excavation rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further simply position mutual vertically opposed excavation shafts by rotation of a driving mechanism, without connecting at a high position as a result of it, without executing hanging-in work by a crane, in a connection method of a multiple spindle excavation rod of a construction machine for excavating by extending a multiple spindle rod group of a second node or more of nodes as an extension multiple spindle rod group to the multiple spindle rod group of an agitation screw being the multiple spindle rod group of a first node.SOLUTION: A deposit hole 18 is drilled by a construction machine, and an extension multiple spindle rod group is deposited in this deposit hole 18, and is established by a multiple spindle rod group 13a of an agitation screw by the construction machine in a separate place from the deposit hole 18, and the construction machine and the multiple spindle rod group 13a of the agitation screw are separated, and the extension multiple spindle rod group of pulling out of the deposit hole is connected as it is to the multiple spindle rod group of the separated agitation screw by the construction machine.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a method for connecting a multi-axis drilling rod of an excavator such as a multi-axis kneading auger machine.

  The soil cement continuous underground wall is a pile of piles piled up with piles of piles piled up by mixing the excavated soil and a hardened material such as cement milk while agitating with an auger machine. A pile wall is constructed.

  The construction machine for the soil cement continuous underground wall is a multi-axis excavator, and as shown in FIGS. 25 and 26, the excavation shaft 5 is connected downward to a drive mechanism 4 comprising a hydraulic motor and a speed reducer. A plurality of excavation shafts 5 (five in the drawing) are arranged in parallel, and the rods are bound by a binding band 9 for steadying.

  The excavation shaft 5 is provided with an excavation head 5a at the tip, a stirring rod provided with an excavation blade that also serves as an agitation blade by an intermittent stirring screw 5b, and a connecting rod that is added to the agitation blade. A shaft rod group [a multi-axis rod group 13a (first node) of a stirring screw, a multi-axis rod group 13b (second node) for addition] is formed.

  Although not shown in the figure, the excavation shaft 5 is a hollow shaft that allows a caking liquid such as cement milk to flow inside, and can be poured out from the discharge port of the excavation head 5a.

  The drive mechanism 4 is supported by a wire from a top sheave 3 of a leader mast 2 standing on a base machine (heavy machine) 1 such as a crawler while the excavation shaft 5 is connected. Furthermore, the drive mechanism 4 engages the curved bracket 6 provided on the back surface with the leader 7 provided along the leader mast 2. In the figure, reference numeral 8 denotes a neck-like steady rest provided at the lower end of the leader mast 2, and the excavation shaft 5 penetrates vertically.

  The excavation shaft 5 is rotationally driven by the drive mechanism 4 and excavation is carried out in the shape of a cone with the excavation head 5a. During the excavation, a caking liquid such as cement milk is discharged from the excavation head 5a, so The soil cement wall body of the preceding element is formed by mixing with.

  A multi-axis rod group in which a plurality of excavating shafts 5 are rotatably connected and supported by a binding band 9 as a connecting member (in the illustrated example, the multi-axis rod group 13a of the first node which is a multi-axis rod group of a stirring screw is added. The upper end of each excavation shaft 5 of the second-stage multi-axis rod group 13b, which is a multi-axis rod group for use, and each output shaft of the drive mechanism 4 provided on the base machine (heavy machine) 1 so as to be movable up and down. 12, the coupling between the excavation shafts 5 of the upper and lower multiaxial rod groups, and the coupling of the excavation head 5a of each excavation shaft 5 are not shown, but each male part having a hexagonal horizontal section. And fitting with a female part by a square hole having a horizontally cut hexagonal shape corresponding to the male part.

  The female portion on which the square hole is provided is provided with a pin insertion hole in a direction orthogonal to the rotation axis, and the pin insertion hole communicates with the square hole. Also, the male part has a pin insertion groove, and the male part and female part are fitted by inserting the pin inserted from the pin insertion hole into the pin insertion groove with the male part and female part fitted. The joint is prevented from coming out vertically.

  Then, as shown in FIG. 27, each of the excavation shafts 5 of the multi-axis rod group is rotated to excavate the ground, and after the first stage excavation by the multi-axis rod group, The drive mechanism is disconnected with the multi-axis rod group 13a (first section) left, and another multi-axis rod group 13b is suspended and connected by a suspension wire 11 provided on the crane 10.

  This connection was made by suspending the binding band 9 by the suspension wire 11 as shown in FIG.

In the following patent document, it is difficult and time-consuming to align the male part having a horizontal cross section with the female part by the square hole having the horizontal cross section in the circumferential direction in the hanging support of the binding band 9 part. In particular, it was proposed that it took time to drill holes by connecting the multi-axis rod group up and down.
Japanese Patent No. 3828644

  In Patent Document 1, as shown in FIG. 29, a connecting member 14 is suspended from a base material 20 via a suspension member 17 in order to lift a multiaxial rod group with a crane.

  The suspension member 17 is configured by connecting a wire 16 to a rotating portion 15 such as a swivel.

  The connection member 14 is provided with a member corresponding to either a male part having a hexagonal horizontal cross section as a joint of each of the excavating shafts 5 or a female part having a square hole having a horizontal hexagonal shape corresponding to the male part. .

  According to Patent Document 1, each of the excavating shafts 5 of the upper multiaxial rotating shaft group suspended by the crane 10 is connected to each other when connecting the upper and lower excavating shafts 5 of the upper and lower multiaxial rotating shaft groups. Each of the digging shafts 5 is independently suspended by the connecting member 14 so that the digging shafts 5 can be independently rotated with light force without the binding band 9 being subjected to its own weight. It is supposed that the excavation shafts 5 that are vertically opposed to each other can be connected in the circumferential direction.

  In any of the above conventional examples, the multiaxial rod group to be added is suspended and connected by a suspension wire provided on the crane.

  As a result, the work becomes a high place, safety is difficult, and in addition to the construction machine, a crane must be used for the connection work, and there are many losses in all aspects of cost, space, and time.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and it is not necessary to perform the lifting work with a crane by connecting the multi-axis rod group. As a result, it is not necessary to connect at a high position. Another object of the present invention is to provide a method for connecting multi-axis excavation rods, which can be easily performed by rotating a drive mechanism.

  In order to achieve the above-mentioned object, the present invention according to claim 1 is to add a multi-axis rod group of a second node or more to a multi-axis rod group of a stirring screw which is a multi-axis rod group of a first node. In the connecting method of the multi-axis drilling rod of the construction machine that is drilled by adding as the shaft rod group, drill the drill hole with the construction machine, add the multi-axis rod group for addition to this drill hole, a place different from the drill hole In the construction machine, the multi-axial rod group of the agitating screw is constructed, the construction machine and the multi-axial rod group of the agitating screw are separated, and the multi-axial rod group for extension lifted from the rake hole by the construction machine is left as it is. The gist is to connect to a multi-axis rod group.

  According to the first aspect of the present invention, the multi-axis rod group for addition is formed by drilling a rake hole with a construction machine and placing it in the rake hole, and the set to the construction machine in construction was placed in the ground. It is only necessary to connect and pull up the multi-axis rod group for extension as it is, and it is not necessary to perform the lifting work with a crane. As a result, it is not necessary to connect at a high position, so that it can be performed safely.

  In addition, when using the construction machine, and adding and pulling up, connecting the excavating shafts facing the upper and lower sides of the upper and lower multi-axis rod groups, each excavating shaft is aligned with the drive mechanism. A rotary action can be utilized, and the vertical excavation shafts can be connected to each other in such a manner that a male part having a square horizontal section and a female part having a square hole having a horizontal cross section are aligned in the circumferential direction.

  The gist of the present invention described in claim 2 is that an excavation head is set at the tip of each excavation shaft of a multi-axis rod group for addition in which a drill hole is drilled by the construction machine. is there.

  According to the second aspect of the present invention, the drilling head is set at the tip of each drilling shaft of the multi-axis rod group for adding the drilling hole to the drilling hole, and the construction machine performs the same as normal construction. It can be done without using special drilling equipment.

  According to the third aspect of the present invention, the addition of the multiaxial rod group for adding to the bore hole is performed first by the multiaxial rod group for adding (third section), and then the multiaxial rod group for adding ( The gist is that the second section) is connected, and the lifting is also performed sequentially from the multiaxial rod group for addition (second section).

  According to the third aspect of the present invention, even when there are a plurality of second and third multi-rod rod groups for addition, a single hole can be shared, and the installation procedure can be streamlined with a minimum number of addition procedures. Can be planned.

  As described above, the multi-axis excavation rod connecting method of the present invention adds the multi-axis rod group of the second node or more to the multi-axis rod group of the stirring screw which is the multi-axis rod group of the first node. In the connection method of multi-axis drilling rods of construction machines that are drilled as a multi-axis rod group, it is not necessary to carry out the lifting work with a crane, and as a result, it is not necessary to connect at a high position. Positioning of the excavating shafts to be performed can be easily performed by rotation of the drive mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1-24 is explanatory drawing of each process which shows one Embodiment of the connection method of the polyaxial drilling rod of this invention.

  First, the construction machine used in the present invention will be described. This is a soil cement continuous underground wall construction machine, which is a multi-axis excavator (three axes in the figure). As shown in FIGS. The excavation shaft 5 is connected downward to a drive mechanism 4 composed of a machine, and a plurality of excavation shafts 5 (three in the figure) are juxtaposed, and the rods are bound by a binding band 9 for steadying. doing.

  The excavation shaft 5 is provided with an excavation head 5a at the tip, a stirring rod provided with an excavation blade that also serves as an agitation blade by an intermittent stirring screw 5b, and a connecting rod that is added to the agitation blade. An axial rod group [a multi-axial rod group 13a (first node) of an agitating screw, an adding multi-axis rod group 13b (second node), an adding multi-axis rod group 13c (third node)] is formed.

  Although not shown in the figure, the excavation shaft 5 is a hollow shaft that allows a caking liquid such as cement milk to flow inside, and can be poured out from the discharge port of the excavation head 5a.

  The drive mechanism 4 is supported by a wire from a top sheave 3 of a leader mast 2 standing on a base machine (heavy machine) 1 such as a crawler while the excavation shaft 5 is connected.

  As shown in FIG. 1, the construction machine is used to start drilling of the additional rod assembling hole 18 (third section). This drilling is performed by the drive mechanism 4 with a multi-axis rod group 13c (third section)] for addition added to the construction machine and a drilling head 5a attached to the tip of each drilling shaft 5.

  As shown in FIG. 2, the drilling of the extension rod assembling hole 18 is completed (third section). In this state, the multi-axial rod group for extension 13c (third section) is placed in the ground with the excavation head 5a attached. The upper end of the multiaxial rod group 13c (third section) for addition is exposed to the ground together with the binding band 9.

  As shown in FIG. 3, the multi-axis rod group 13c (third section) for addition that has been placed in the ground is separated from the drive mechanism 4, the construction machine is moved, and the multi-axis rod group 13b for addition is added to the construction machine. Assemble (second section).

  As shown in FIG. 4, the construction machine is moved to the position of the original extension rod assembly hole 18 and added to the extension multiaxial rod group 13c (third section) already added to the ground. The rod group 13b (second section) is connected, and further drilling of the additional rod assembling hole 18 is started (second section + third section).

  As shown in FIG. 5, the drilling of the extension rod assembling hole 18 is completed. (Second section + third section) As a result, the bore hole 18 is extended. In this state, the multiaxial rod group 13c (third section) for addition and the multiaxial rod group 13b (second section) for addition are connected together. Then you can be part of the ground.

  That is, in order to add the multiaxial rod group for adding to the hole 18, the multiaxial rod group 13 c (third section) for adding is performed first, and then the multiaxial rod group 13 b (second section) for adding. In addition, as will be described later, the lifting is also performed sequentially from the multiaxial rod group 13b (second section).

  As shown in FIG. 6, the multi-axis rod group 13b (second node) for addition added in the ground is disconnected from the drive mechanism 4, the construction machine is moved, and the multi-axis rod group of the stirring screw is moved to the construction machine. 13a (1st section) assembly and construction of soil cement continuous underground wall begins.

  The creation of the first section is completed as shown in FIG.

  As shown in FIG. 8, the drive mechanism 4 of the construction machine and the multi-axial rod group 13a (first section) of the agitation screw are separated, and the construction machine is moved to add the rod assembly for the extension rod assembly 18 The drive mechanism 4 is connected to the multiaxial rod group 13c (third node) and the adding multiaxial rod group 13b (second node).

  As shown in FIG. 9, the adding multi-axis rod group 13c (third section) and the adding multi-axis rod group 13b (second section) are pulled up, and the adding rod assembling hole 18 shown in FIG. The construction machine is moved to the multi-axis rod group 13a (first section) of the agitating screw in a state where the multi-axis rod group 13c (third section) for extension is left, and the multi-axis rod group 13b for extension is added thereto. Connect (section 2). Begin construction of the first verse + second verse.

  In the extension rod assembling hole 18 for the extension, the lower part becomes empty by pulling up the extension multi-axis rod group 13b (second section) together with the extension multi-axis rod group 13c (third section). Temporarily supporting girders so that the multi-axis rod group 13c (third section) for addition will not fall when the multi-axis rod group 13b (second section) for extension is separated leaving the group 13c (third section). At 19, the upper part of the adding multi-axis rod group 13 c (third section) is held on the ground.

  As shown in FIG. 11, the preparation is completed (first section + second section), and the multiaxial rod group 13a (first section) of the stirring screw and the additional multiaxial rod group 13b (second section) are left and separated. As shown in FIG. 12, a multi-axis rod group 13c (third section) for addition is connected to the construction machine through a rod assembly hole 18 for extension, and this multi-axis rod group 13c (first step) is connected as shown in FIG. Raise verse three).

  When the multi-rod rod group 13c (third section) for extension is lifted from the extension rod assembly side hole 18, the excavation head 5a at the tip is removed, and the multi-axis rod of the stirring screw left as shown in FIG. The multi-axis rod group 13c (third node) for extension is connected to the group 13a (first node) and the multi-axis rod group 13b (second node) for extension, and the formation is started (first node + second node + Section 3).

  As shown in FIG. 15, the preparation is completed, the bottom is stirred, and then pulled up.

  As shown in FIG. 16, the multi-axis rod group 13c (third section) for extension is cut off when pulled up, and as shown in FIG. 17, the multi-axis rod group 13c (third section) for extension is added. 18 In this case, the excavation head 5a is attached to the tip of each excavation shaft 5 of the multiaxial rod group 13c (third section) for addition.

  As shown in FIG. 18, the multiaxial rod group 13c (third node) for extension is cut off, and as shown in FIG. 19, the multiaxial rod group 13b (second node) for extension is pulled up, as shown in FIG. The multi-axis rod group 13b (second node) for extension is cut off, and the multi-axis rod group 13b (second node) for extension is removed together with the multi-axis rod group 13c (third node) for extension as shown in FIG. Insert into the rod assembly side hole 18 for the extension rod.

  As shown in FIG. 22, the multiaxial rod group 13b (second node) for extension is cut off, and the multiaxial rod group 13a (first node) of the stirring screw is pulled up and re-stirred as shown in FIG.

  As shown in FIG. 24, the multiaxial rod group 13a (first section) of the stirring screw is pulled up, and the construction of the H steel erection (not shown) as the core material is completed.

It is explanatory drawing which shows the rod assembly start hole drilling start (3rd section) as a 1st process by the connection method of the multiaxial drilling rod of this invention. It is explanatory drawing which shows the completion | finish of a rod assembly piercing hole for completion of addition (3rd section) as a 2nd process by the connection method of the multiaxial drilling rod of this invention. It is explanatory drawing which shows the rod assembly for extension (2nd clause) as a 3rd process by the connection method of the multi-axial excavation rod of this invention. In the method for connecting multi-axis excavation rods of the present invention, as a fourth step, it is an explanatory view showing the start of additional rod assembly rake holes (second section + third section). In the multi-axis excavation rod connecting method of the present invention, as a fifth step, it is an explanatory view showing the completion of the rod assembly rake hole drilling (second section + third section). It is explanatory drawing which shows a stirring screw assembly creation start (1st section) as a 6th process by the connection method of the multi-axial excavation rod of this invention. In the connection method of the multi-axis excavation rod of this invention, it is explanatory drawing which shows completion of creation (1st section) as a 7th process. It is explanatory drawing which shows a 2nd joint addition as an 8th process by the connection method of the multiaxial drilling rod of this invention. It is explanatory drawing which shows a 2nd joint addition (2nd node pulling up) as a 9th process with the connection method of the multiaxial drilling rod of this invention. In the connection method of the multi-axis excavation rod of this invention, it is explanatory drawing which shows creation start (1st + 2nd) as a 10th process. In the connection method of the multi-axis excavation rod of this invention, it is explanatory drawing which shows completion of creation (1st + 2nd) as an 11th process. In the connection method of the multi-axis excavation rod of this invention, it is explanatory drawing which shows a 3rd joint addition as a 12th process. It is explanatory drawing which shows a 3rd node addition (3rd node raising) as a 13th process by the connection method of the multi-axis drilling rod of this invention. In the connection method of the multi-axis excavation rod of this invention, it is explanatory drawing which shows a creation start (1st + 2nd + 3rd) as a 14th process. In the connection method of the multiaxial drilling rod of this invention, it is explanatory drawing which shows formation completion, bottom part stirring, and raising as a 15th process. It is explanatory drawing which shows 3rd section cutting | disconnection as a 16th process by the connection method of the multi-axial drilling rod of this invention. It is explanatory drawing which shows 3rd section cutting | disconnection (3rd section azuki) as a 17th process with the connection method of the multi-axial drilling rod of this invention. It is explanatory drawing which shows 3rd section cutting | disconnection (3rd section azuki) as an 18th process by the connection method of the multi-axial drilling rod of this invention. It is explanatory drawing which shows 2nd node pulling up as a 19th process with the connection method of the multi-axial drilling rod of this invention. In the connection method of the multi-axis excavation rod of this invention, it is explanatory drawing which shows 2nd node cutting | disconnection as a 20th process. It is explanatory drawing which shows 2nd section cutting | disconnection (2nd section azuki) as a 21st process with the connection method of the multi-axis drilling rod of this invention. In the connection method of the multi-axis drilling rod of this invention, it is explanatory drawing which shows 2nd node cutting | disconnection (2nd node attachment) as a 22nd process. It is explanatory drawing which shows 1st node pulling-up and re-stirring as a 23rd process with the connection method of the multiaxial drilling rod of this invention. It is explanatory drawing which shows the 1st node pulling completion and H steel erection as a 24th process by the connection method of the multiaxial drilling rod of this invention. It is a front view of a multi-axis excavator. It is a side view of a multi-axis excavator. It is the whole front view which shows one of the prior art examples of the connection of a multi-axis drilling rod. It is a front view of the principal part which shows one of the prior art examples. It is a perspective view of the principal part which shows another prior art example.

DESCRIPTION OF SYMBOLS 1 ... Base machine 2 ... Leader mast 3 ... Top sheave 4 ... Drive mechanism 5 ... Excavation shaft 5a ... Excavation head 5b ... Agitation screw 6 ... Curve bracket 7 ... Leader 8 ... Anti-rest 9 ... Binding band 10 ... Crane 11 ... Hanging wire 12 ... Output shaft 13a ... Multi-axial rod group of stirring screw (first section)
13b ... Multi-axis rod group for extension (second section)
13c: Multi-axis rod group for extension (section 3)
DESCRIPTION OF SYMBOLS 14 ... Connection member 15 ... Rotating part 16 ... Wire 17 ... Suspension member 18 ... Addition rod assembly side hole 19 ... Temporary support girder 20 ... Base material

Claims (3)

A multi-axis drilling rod for construction machines that drills by adding a multi-axis rod group of a second or higher section to a multi-axis rod group of a stirring screw, which is a multi-axis rod group of the first section, as a multi-axis rod group for addition. In the connection method of
Drill a rake hole with a construction machine, add a multi-axis rod group for addition to this rake hole,
Created with a multi-shaft rod group of stirring screws by a construction machine in a place different from the azuro hole,
Separate the multi-axis rod group of the construction machine and the stirring screw,
A connecting method for a multi-axis excavation rod, characterized in that a multi-axis rod group for extension that has been lifted from a rake hole by a construction machine is directly connected to the multi-axis rod group of the separated stirring screw.   2. The method of connecting multi-axis drilling rods according to claim 1, wherein the drilling holes by the construction machine are drilled by setting a drilling head at the tip of each drilling shaft of the multi-axis rod group for adding the drill holes to the drilling holes. To add the multi-axis rod group for extension to the bore hole, perform the multi-axis rod group for extension (Section 3) first, and then connect the multi-axis rod group for extension (Section 2) together. The method for connecting a multi-axis drilling rod according to claim 1 or 2, wherein the axing and lifting are sequentially performed from the multi-axis rod group for addition (second section).

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