CN103898897B - Connecting shaft of excavating and stirring shaft - Google Patents
Connecting shaft of excavating and stirring shaft Download PDFInfo
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- CN103898897B CN103898897B CN201310675897.3A CN201310675897A CN103898897B CN 103898897 B CN103898897 B CN 103898897B CN 201310675897 A CN201310675897 A CN 201310675897A CN 103898897 B CN103898897 B CN 103898897B
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Abstract
The invention provides a connecting shaft 30 of an excavating and stirring shaft for a foundation modifying device. The foundation modifying device comprises the excavating and stirring shaft supported in a manner of capable of being lifted along a guide pillar, a drive rotating the excavating and stirring shaft during lifting, and a plurality of short connecting shafts 30 connected to be the long excavating and stirring shaft. On a hull, the plurality of connecting shafts 30 are sequentially connected on the upper end of the excavating and stirring shaft and the upper end 33 of the connecting shaft connected to the upper end of the excavating and stirring shaft. The excavating and stirring shaft is inserted in to the modified foundation in the sea to a preset depth, and curing material is discharged from a discharge portion of the excavating and stirring shaft to inject in the modified foundation. The excavation earth and curing material in the modified foundation are fixed to build a modified pillar through the curing of the curing material. A curing material supplying path 32 through from the upper end to the lower end is arranged shaft body 31 of the connecting shaft, and a switching valve 35 opening and closing the path is arranged on the lower end of the shaft body.
Description
Technical field
The present invention relates to and inject cement paste (cement slurry), the curing materials such as cement emulsion slurry (cement milk) and excavate soil and be uniformly mixed, the connecting axle of the excavation shaft that ground improvement device curing materials being solidified improve the offshore construction of ground uses to ground.
Background technology
Generally, in the ground understirring type ground improvement device of land construction, configure the excavation shaft of the long size of such as tens meters corresponding with the improvement length needed at above-below direction.And, when insertion or when extracting this excavation shaft, discharge to ground and inject the curing materials such as cement paste, cement emulsion slurry, be uniformly mixed and excavate soil and curing materials and build up improvement stake by the solidification of curing materials.
But under crane span structure, the place of the inferior limited height of steel towers cable, it is impossible for using the excavation shaft of long size to construct, and thus uses the ground improvement device (for example, referring to patent document 1) of the axle linking multiple short size.
In ground improvement device described in patent document 1, in the front end of the puddler being positioned at lower side, agitator is installed, in the upper end side of this puddler, with joint so that the mode of dismounting the bar of the short size of multiple spreading can be linked.And, from being positioned at the outlet opening of front opening of puddler of lower side, to ground inject the curing materials such as cement paste, cement emulsion slurry and and excavate soil and be uniformly mixed, make curing materials solidify and improve ground
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2010-1694 publication
Summary of the invention
In the bar of the short size of the connecting axle linked as the puddler used with above-mentioned ground improvement device in the past, be provided with the stream to its inner supply curing materials.But, owing to not arranging the valve opened and close this stream, so when carrying out spreading to the bar of short size in foundation improvement process or when pulling down the bar of short size after foundation improvement terminates, there is the worry be located at the curing materials in the stream of the bar of spreading and outwards flowed out.Particularly, when needing to consider ambient influnence and offshore construction is carried out in the place of limited height, due to the curing materials meeting Marine Pollution outwards flowed out, thus need correspondingly countermeasure.
The object of the present invention is to provide the following connecting axle excavating shaft, that is, when not supplying curing materials, reliably can prevent curing materials from flowing out from by the stream of the axle main body of spreading, reliably can avoid the marine pollution caused because of this curing materials.
First form of the present invention excavates the connecting axle of shaft, and it is for ground improvement device, and this ground improvement device possesses: in the mode that freely can be elevated in vertical along the guide pillar being erected on hull by the excavation shaft supported, above-mentioned excavation shaft is rotated while the driving machine that is elevated, and spreading is to the connecting axle of many short sizes of above-mentioned excavation shaft, on above-mentioned hull, while at the upper end of above-mentioned excavation shaft and spreading to the connecting axle of the upper end above-mentioned short size of spreading many successively of the connecting axle of the above-mentioned short size of the upper end of above-mentioned excavation shaft, while above-mentioned excavation shaft to be inserted into freely the prescribed depth of marine improvement ground, discharge to above-mentioned improvement ground from the outlet opening of above-mentioned excavation shaft and inject curing materials, be uniformly mixed the excavation soil in above-mentioned improvement ground and above-mentioned curing materials and build up improvement stake by the solidification of above-mentioned curing materials, the purport of the connecting axle of above-mentioned excavation shaft is, above-mentioned connecting axle axle main body from the vertical of upper end to lower end, in through mode, a poroid stream of the circular cross section that supplies above-mentioned curing materials is set, in the bottom of above-mentioned axle main body, the hole of circular cross section is formed in the mode orthogonal with above-mentioned stream, in the hole of above-mentioned circular cross section, the columned transfer valve had with an opening of above-mentioned stream same shape is set in the mode that can freely rotate, predetermined angular is rotated by making above-mentioned transfer valve, make above-mentioned fluid communication or the closedown of the above-mentioned opening of above-mentioned transfer valve and above-mentioned axle main body, in at least one end of above-mentioned transfer valve, the operating portion above-mentioned transfer valve being carried out to handover operation is set, aforesaid operations portion is integrally formed in the mode exposed in the hole of above-mentioned circular cross section.
Second form of the present invention excavates the connecting axle of shaft, and it is for ground improvement device, and this ground improvement device possesses: in the mode that freely can be elevated in vertical along the guide pillar being erected on hull by the excavation shaft supported, above-mentioned excavation shaft is rotated while the driving machine that is elevated, and spreading is to the connecting axle of many short sizes of above-mentioned excavation shaft, on above-mentioned hull, while at the upper end of above-mentioned excavation shaft and spreading to the connecting axle of the upper end above-mentioned short size of spreading many successively of the connecting axle of the above-mentioned short size of the upper end of above-mentioned excavation shaft, while above-mentioned excavation shaft to be inserted into freely the prescribed depth of marine improvement ground, discharge to above-mentioned improvement ground from the outlet opening of above-mentioned excavation shaft and inject curing materials, be uniformly mixed the excavation soil in above-mentioned improvement ground and above-mentioned curing materials and build up improvement stake by the solidification of above-mentioned curing materials, the purport of the connecting axle of above-mentioned excavation shaft is, above-mentioned connecting axle axle main body from the vertical of upper end to lower end, in through mode, a poroid stream of the circular cross section that supplies above-mentioned curing materials is set, in the bottom of above-mentioned axle main body, the hole of circular cross section is formed in the mode orthogonal with above-mentioned stream, in the hole of above-mentioned circular cross section, the columned transfer valve had with an opening of above-mentioned stream same shape is set in the mode that can freely slide, by making above-mentioned transfer valve slide guage measured length, make above-mentioned fluid communication or the closedown of the above-mentioned opening of above-mentioned transfer valve and above-mentioned axle main body, in at least one end of above-mentioned transfer valve, the operating portion above-mentioned transfer valve being carried out to handover operation is set, aforesaid operations portion exposes in the mode that the outer peripheral face unlike above-mentioned axle main body is more outstanding in the hole of above-mentioned circular cross section.
According to the first and second form, at the poroid stream of circular cross section being provided with supply curing materials the vertical of upper end to lower end in through mode of the axle main body of connecting axle, be provided with the transfer valve making stream open closedown in the bottom of axle main body.Thus, when carrying out spreading to the connecting axle of short size, pulling down, by making transfer valve become closed condition in advance, reliably can prevent curing materials from flowing out from the stream of the connecting axle of spreading, reliably can avoid the marine pollution caused because of curing materials.Thus, needing to consider ambient influnence and the conditional place of marine site equal altitudes that there is the airport periphery that aviation limits, also can feel at ease and carrying out offshore construction safely.
In addition, according to the first form, the hole of circular cross section is formed with in the mode orthogonal with stream in the bottom of axle main body, be provided with cylindric in the mode that can freely rotate in the hole of this circular cross section and there is the transfer valve with stream same shape opening, by making this transfer valve rotate predetermined angular, make the opening of this transfer valve and the fluid communication of axle main body or closedown.Thereby, it is possible to utilize simple structure reliably to open close the opening of transfer valve and the stream of axle main body.
In addition, according to the second form, the hole of circular cross section is formed with in the mode orthogonal with stream in the bottom of axle main body, be provided with cylindric in the mode that can freely slide in the hole of this circular cross section and there is the transfer valve with stream same shape opening, by making this transfer valve slide guage measured length, make the opening of this transfer valve and the fluid communication of axle main body or closedown.Thereby, it is possible to utilize simple structure reliably to open close the opening of transfer valve and the stream of axle main body.
Further, according to the first form, be provided with at least one end of columned transfer valve the operating portion this transfer valve being carried out to handover operation, this operating portion is integrally formed in the mode exposed in the hole of the circular cross section from axle main body.Thereby, it is possible to utilize operating portion simply and reliably carry out the opening of transfer valve and the stream of axle main body open closedown.In addition, according to the second form, operating portion exposes in the mode that the outer peripheral face unlike this axle main body is more outstanding in the hole of the circular cross section of axle main body.Thereby, it is possible to utilize operating portion simply and reliably carry out the opening of transfer valve and the stream of axle main body open closedown, and operating portion can not be made outstanding laterally and become obstruction.
Accompanying drawing explanation
Fig. 1 is the lateral view possessing the operation ship of ground improvement device on the bow representing embodiments of the present invention.
Fig. 2 is the front view of the operation ship possessing above-mentioned ground improvement device.
Fig. 3 is the partial perspective view of the joint axis of the driving machine that above-mentioned ground improvement device uses.
Fig. 4 is the partial perspective view of the state representing the connecting axle being linked with short size in the joint axis of above-mentioned driving machine.
Fig. 5 is the front view of the twin axle excavation shaft that above-mentioned ground improvement device uses.
Fig. 6 is the stereogram of the connecting axle of above-mentioned short size.
Fig. 7 is the partial perspective view of the pent state of stream of the connecting axle representing above-mentioned short size.
Fig. 8 be represent the stationary fixture that prevents the connecting axle of above-mentioned short size from falling from hull fixing before the stereogram of state.
Fig. 9 represents the stereogram utilizing above-mentioned stationary fixture to secure the state of the connecting axle of short size.
Figure 10 is the stereogram of the initial state representing the offshore construction utilizing above-mentioned ground improvement device to carry out.
Figure 11 represents the stereogram utilizing the state of stationary fixture fixed connection shaft making above-mentioned driving machine decline after squeezing into the connecting axle of short size.
Figure 12 represents to make the connecting axle of short size be separated from the joint axis of above-mentioned driving machine and make the stereogram of the state after driving machine rising.
Figure 13 is the stereogram representing the state of to be received by axle immediately below joint axis that platform moves to above-mentioned driving machine.
Figure 14 represents the joint axis of above-mentioned driving shaft and is accommodated in the stereogram that axle receives the state after the connecting axle link of platform.
Figure 15 be represent the driving machine that makes to be linked with above-mentioned connecting axle rise after the stereogram of state.
Figure 16 represents the stereogram making above-mentioned axle storage platform be back to the state of original position.
Figure 17 is the stereogram representing the fixing state relieving stationary fixture after linking with the connecting axle being fixed on stationary fixture the connecting axle of the joint axis being linked to above-mentioned driving machine.
Figure 18 represents to make above-mentioned driving machine decline and squeeze into the stereogram of the state of the connecting axle after spreading.
Figure 19 is the stereogram of the connecting axle of the short size of the transfer valve with other embodiment.
Figure 20 (a) represents the partial perspective view utilizing the transfer valve of other embodiment to close the state after the stream of the connecting axle of short size, and Figure 20 (b) represents the partial perspective view utilizing this transfer valve to open the state after the stream of the connecting axle of short size.
In figure: 2-hull, 10-ground improvement device, 11-guide pillar, 12-rig (driving machine), 13-joint axis, 13c-engaging recessed part, 20-excavate shaft, 26-outlet opening, 27-locking protuberance (upper end), the connecting axle of 30-short size, 31-axle main body, the hole of 31b-circular cross section, 32-stream, 33-locking protuberance (upper end), 34-engaging recessed part, 35-transfer valve, 35a-opening, 35b-one end, 35c-operating portion, A-marine, C-improvement ground, D-excavation soil, E-curing materials, F-improvement stake.
Detailed description of the invention
Below, based on accompanying drawing, embodiments of the present invention are described.
Fig. 1 is the lateral view possessing the operation ship of ground improvement device on the bow representing embodiments of the present invention.Fig. 2 is the front view of the operation ship possessing this ground improvement device.Fig. 3 is the partial perspective view of the joint axis of the driving machine that this ground improvement device uses.Fig. 4 is the partial perspective view of the state representing the connecting axle being linked with short size in the joint axis of this driving machine.Fig. 5 is the front view of the twin axle excavation shaft that this ground improvement device uses.Fig. 6 is the stereogram of the connecting axle of this short size.Fig. 7 is the partial perspective view of the state of the stream representing the connecting axle of closing this short size.Fig. 8 be represent the stationary fixture that prevents the connecting axle of this short size from falling from hull fixing before the stereogram of state.Fig. 9 represents the stereogram utilizing this stationary fixture to secure the state of the connecting axle of short size.Figure 10 ~ Figure 18 is the stereogram of the state representing the offshore construction utilizing this ground improvement device to carry out in order.
As shown in Figure 1 and Figure 2, ground improvement device 10 is arranged at the fore 2a of the hull 2 of operation ship 1.Ground improvement device 10 is following twin axle devices, namely, utilize two to excavate shafts 20,20 to excavate the improvement ground C under the sand cushion B being positioned at marine A, native D is excavated to it and the curing materials such as cement paste, cement emulsion slurry E is uniformly mixed, thus utilize the solidification of this curing materials E to build up improvement stake F.
In the front of hull 2 and the left and right sides of rear end side, be provided with guide pile (spud) 3 in the mode that can freely be elevated, this guide pile 3 has and drops to sand cushion B and the base plate 3a keeping the balance of hull 2.In the left and right sides of the rear side of hull 2, be provided with a pair ballast tank 4,4 of the balance keeping hull 2.In the central authorities of hull 2, be respectively equipped with hoist engine 5, grout pump 6, mud a complete set of equipment 7, silo 8 and tank 9 from front side to rear side.In the production line of this offshore construction, the curing materials E such as cement paste, cement emulsion slurry utilizing grout pump 6 to be generated by mud a complete set of equipment 7 is supplied to excavation shaft 20 via the joint axis 13 of rig (driving machine) 12.
As shown in Figure 1 and Figure 2, ground improvement device 10 possesses: two that carry out supporting in the mode that freely can be elevated in vertical along the guide pillar 11 vertically erected on the fore 2a of hull 2 are excavated shaft 20,20; Make these two to excavate shaft 20,20 to rotate and a pair rig (driving machine) 12,12 be elevated; Spreading is to the connecting axle 30 of many short sizes of each excavation shaft 20; With the axle storage platform 40 making the connecting axle 30,30 of its state erecting setting to two short sizes receive them; And the stationary fixture 50(reference Fig. 8 preventing each excavation shaft 20 from falling from hull 2).
On hull 2, to the upper end of each excavation shaft 20 and spreading to the upper end of connecting axle 30 of short size of upper end of excavating shaft 20, on one side two excavation shafts 20,20 are freely inserted the prescribed depth of the improvement ground C of marine A on one side by the connecting axle 30 of the short size of spreading many successively, the each outlet opening 26 excavating shaft 20,20 from two discharges injection curing materials E to improvement ground C, is uniformly mixed and utilizes the solidification of curing materials E to build up improvement stake F to the excavation soil D and curing materials E in improvement ground C.In addition, the height on upper end to the sea of guide pillar 11 is such as set within 15m, even if also can construct in the conditional place of equal altitudes, surrounding sea areas, airport that there is aviation restriction.
As shown in Figure 1, at each rig 12 be elevated along the front 11a of guide pillar 11, be linked with the wire rope 5a of the base end side that to have reeled at hoist engine 5.By the driving of hoist engine 5, each rig 12 carries out elevating movement along guide pillar 11.At each rig 12, be respectively equipped with the joint axis 13 of the upper end of the connecting axle 30 linking short size.Each joint axis 13 is configured to the not shown motor and gear mechanism etc. by being built in rig 12 and rotates.
As shown in Figure 3, Figure 4, the stream 13a's that the joint axis 13 being located at each rig 12 is formed as entreating the circular cross section with supply curing materials E poroid wherein is cylindric.On the top of each joint axis 13, be formed with the hole 13b of the internal diameter circular cross section larger than the internal diameter of stream 13a in the mode orthogonal with stream 13a.Be provided with cylindric in the mode that can freely rotate in the hole 13a of circular cross section and there is the transfer valve 15 with the opening 15a of stream 13a same shape.
At one end 15b of columned transfer valve 15, the outstanding operating portion 15c being formed with hexagon shape transfer valve 15 being carried out to handover operation integratedly.The operating portion 15c of hexagon shape gives prominence to more laterally than the hole 13b of the circular cross section of joint axis 13.Transfer valve 15 is made to rotate 90 ° by operation operating portion 15c, thus as shown in Figure 4, the opening 15a of transfer valve 15 can be made to be communicated with the stream 13a of joint axis 13 and to open stream 13a, or as shown in Figure 3, can the opening 15a of transfer valve 15 be closed relative to the stream 13a of joint axis 13 and close closed channel 13a.
In the bottom of joint axis 13, be provided with the engaging recessed part 13c of the hexagon concave shape chimeric with the locking protuberance 33 of the hexagon convex form of the upper end of the connecting axle 30 of short size.In the bottom of joint axis 13, the mode forming the groove 13d of section semicircular in shape respectively with an opposite inner surface of the engaging recessed part 13c at hexagonal column concave shape is formed with a pair through hole 13e, 13e of circular cross section.If insert a pair connecting pin 18,18 at a pair through hole 13e, 13e, then groove 33a, 33a of a pair section semicircular in shape of the locking protuberance 33 of each connecting pin 18 and groove 13d, 13d of a pair section semicircular in shape of the engaging recessed part 13c of the bottom of joint axis 13 and the upper end of connecting axle 30 are chimeric, thus as shown in Figure 4, the bottom of joint axis 13 and the upper end of connecting axle 30 link.
As shown in Figure 5, two being excavated shafts 20,20 and are formed as cylindric respectively, can keep predetermined distance by having the space holding plate 21,22 that prevents servo-actuated levels concurrently.In the bottom of each excavation shaft 20, the excavating bur 23 excavating improvement ground C is installed.Between the upside of the space holding plate 21 on the upper strata of each excavation shaft 20, the space holding plate 21,22 of levels, between the space holding plate 22 of lower floor and excavating bur 23, a pair agitator 24,24 linearly extended to the left and right is installed with mutually staggering 90 ° of phase places.The stream 25 supplying curing materials E to undermost a pair agitator 24,24 from the upper end of each excavation shaft 20 is arranged in the mode of through each excavation shaft 20.When each excavation shaft 20 inserts, discharge to improvement ground C from the outlet opening 26 of lower end of the stream 25 being located at each excavation shaft 20 and inject curing materials E.
In the upper end of each excavation shaft 20, be formed with the locking protuberance 27 of hexagon convex form, this locking protuberance 27 is chimeric with the engaging recessed part 34 of hexagon concave shape of bottom of the connecting axle 30 being formed at short size.The groove 28,28 of section semicircular in shape is formed respectively at a pair opposite external surface of the locking protuberance 27 of hexagon shape.The locking protuberance 27 of each excavation shaft 20 and the engaging recessed part 34 of the bottom of connecting axle 30 chimeric after, insert a pair connecting pin 18,18 at a pair through hole 34b, 34b of the bottom of connecting axle 30.Like this, each connecting pin 18 is chimeric with groove 34a, 34a of a pair section semicircular in shape of the engaging recessed part 34 of the bottom of connecting axle 30, thus each bottom of excavating the upper end of shaft 20 and the connecting axle 30 of short size links.In addition, the length that shaft 20 is formed as such as 2.5m is excavated.
As shown in Figure 6, the axle main body 31 of the connecting axle 30 of short size is formed as cylindric, and a stream 32 poroid from the circular cross section of the upper end of its central authorities to lower end supply curing materials E is formed in mode through on vertical.In the upper end of axle main body 31, be formed with the locking protuberance 33 of hexagon convex form, this locking protuberance 33 be located at the engaging recessed part 13c of hexagon concave shape of joint axis 13 of rig 12 or chimeric by the engaging recessed part 34 of the bottom of the connecting axle 30 newly established of spreading.At a pair opposite external surface of the locking protuberance 33 of hexagon shape, be formed with the groove 33a of section semicircular in shape respectively.In addition, connecting axle 30 is such as formed as the length of 4.5m, can change the longest pour length by the radical of the connecting axle 30 changing spreading.
The locking protuberance 33 of the upper end by connecting axle 30 and the engaging recessed part 13c of the bottom of joint axis 13 or chimeric by the engaging recessed part 34 of the bottom of the connecting axle 30 newly established of spreading after, a pair through hole 34b, 34b of the bottom of a pair through hole 13e, 13e in the bottom of joint axis 13 or the connecting axle 30 newly established by spreading insert a pair connecting pin 18,18.Like this, groove 13d, 13d of a pair section semicircular in shape of the engaging recessed part 13c of each connecting pin 18 and groove 33a, 33a of a pair section semicircular in shape of the locking protuberance 33 of the upper end of connecting axle 30 and the bottom of joint axis 13 or chimeric by groove 34a, 34a of a pair section semicircular in shape of the engaging recessed part 34 of the bottom of the connecting axle 30 newly established of spreading, thus the bottom of the bottom at the upper end connection joint axle 13 of connecting axle 30 or the connecting axle 30 newly established by spreading.
In the bottom of axle main body 31, be formed with the engaging recessed part 34 of hexagon concave shape, the locking protuberance 33 of the upper end of this engaging recessed part 34 and the locking protuberance 27 of the upper end of each excavation shaft 20 or the connecting axle 30 arranged of spreading is chimeric.In the bottom of axle main body 31, the mode forming the groove 34a of section semicircular in shape respectively with an opposite inner surface of the engaging recessed part 34 at hexagon concave shape is formed with a pair through hole 34b, 34b of circular cross section.And, if at a pair through hole 34b of the bottom of axle main body 31, 34b inserts a pair connecting pin 18, 18, the then groove 34a of a pair section semicircular in shape of the engaging recessed part 34 of the bottom of each connecting pin 18 and axle main body 31, the groove 28 of a pair section semicircular in shape of the locking protuberance 27 of the upper end of 34a and each excavation shaft 20, 28, or by the groove 33a of a pair section semicircular in shape of the locking protuberance 33 of the upper end of the connecting axle 30 arranged of spreading, 33a is fitted together to, thus the upper end of each excavation shaft 20 is linked in the bottom of the axle main body 31 of connecting axle 30, or by the upper end of the connecting axle 30 arranged of spreading.
In the bottom of axle main body 31, be formed with the hole 31b of the internal diameter circular cross section larger than the internal diameter of stream 32 in the mode orthogonal with stream 32.In the hole 31b of circular cross section, be provided with cylindric in the mode that can freely rotate and there is the transfer valve 35 with an opening 35a of stream 32 same shape.
At one end 35b of columned transfer valve 35, the outstanding operating portion 35c being formed with hexagon shape transfer valve 35 being carried out to handover operation integratedly.The operating portion 35c of hexagon shape is than protruding outside more to outer peripheral face 31a of the hole 31b of the circular cross section of axle main body 31.Transfer valve 35 is made to rotate 90 ° by operation operating portion 35c, thus as shown in Figure 6, the opening 35a of transfer valve 35 can be made to be communicated with the stream 32 of axle main body 31 and to open stream 32, or as shown in Figure 7, can the opening 35a of transfer valve 35 be closed relative to the stream 32 of axle main body 31 and close closed channel 32.
On the top of axle main body 31, be formed with the locking groove 36 of annulus concavity, this locking groove 36 is locking for the stationary fixture described later 50 preventing from falling from hull 2.
As shown in Figure 1, Figure 2, shown in Figure 10, platform 40 is received for the axle making the connecting axle 30 of its state erecting setting for two short sizes receive, be made up of such as lower component: chassis 41, it is installed on the guide rail 61,61 of the operation post 60 of the frame-shaped more outstanding to level than the fore 23 of the hull 2 of operation ship 1 at a pair and utilizes roller 42 to advance; The dish 43 of residual curing materials storage, it is installed on the upper surface of chassis 41, and has in the bottom surface of inside and make short connecting axle 30 with upright a pair turntable 44,44 of the mode that can rotate freely; Keep framework 45,45 a pair, they erect from the both sides of chassis 41 is four frame shapes, and keeps the connecting axle 30,30 of two short sizes with erectility; And the not shown hydraulic cylinder as drive source, it makes chassis 41 move back and forth the coupling position H of the below of the joint axis 13 to each rig 12 being positioned at lifting position from position of readiness G.
Possess at above-mentioned coupling position H for preventing the stationary fixture 50 excavating shaft 20 and fall from workbench 60 with the connecting axle 30 that excavation shaft 20 links at the operation post 60 of hull 2.As shown in Figure 8, Figure 9, stationary fixture 50 possesses metal a pair fixed head 51,51 and the bolt 53 that is fastened and fixed a pair fixed head 51,51 and nut 54.
A pair fixed head 51,51 is formed as same shape in symmetrical mode, is formed with the recess 51a of arc-shaped in opposite central authorities, and this recess 51a loads and unloads relative to the locking groove 36 of annulus concavity on the top being formed at connecting axle 30.In the both sides across recess 51a of each fixed head 51, be fixed with vertical standing board 52 by welding etc.At the upper-lower position of standing board 52, be formed respectively for the through circular hole 52a of the bar part of bolt 53.The locking groove 36 of the annulus concavity on the top of connecting axle 30 is chimeric with the recess 51a of each arc-shaped of a pair fixed head 51,51, utilizes bolt 53 to be fastened and fixed opposite standing board 52,52 with nut 54.Under state after this is fastened and fixed, by a pair fixed head 51,51 being placed in a pair gripper shoe 62,62 of operation post 60, can prevent from excavating shaft 20 and with excavate the connecting axle 30 that shaft 20 links and fall from operation post 60.
Next, Fig. 1 and Figure 10 ~ Figure 18 is used to be described this offshore construction to the ground improvement device 10 of said structure.
As shown in Figure 1, each guide pile 3 of the left-right and front-back of the hull 2 being positioned at operation ship 1 is declined, and make the base plate 33 of guide pile 3 be positioned on sand cushion B, hull 2 is remained level.Thus, in advance by the connecting axle 30 of the short size linked with each joint axis 13 of a pair rig 12,12 by connecting pin 18 and be all installed as plumbness by connecting pin 18 with the excavation shaft 20 that the bottom of the connecting axle 30 of short size links.That is, the axle core of excavation shaft 20 of the connecting axle 30 of short size and the bottom that is linked to connecting axle 30 is installed as vertically.
From this installment state, roll out the wire rope 5a of hoist engine 5, and as shown in Figure 10 ~ Figure 11, make a pair rig 12,12 drop to assigned position along the guide pillar 11 being erected on hull 2, thus make the connecting axle 30 of short size and drop to the position of regulation with the excavation shaft 20 that the bottom of connecting axle 30 links.Now, the transfer valve 35 of the transfer valve 15 of the joint axis 13 of each rig 12 and the connecting axle 30 of short size all becomes open mode, but the excavating bur 23 excavating the lower end of shaft 20 does not reach the improvement ground C of marine A, therefore the curing materials such as cement paste, cement emulsion slurry E can not be discharged from the outlet opening 26 excavating shaft 20.
Next, as shown in figure 11, short size connecting axle 30 and decline under the state that terminates with the excavation shaft 20 that the bottom of connecting axle 30 links, at the coupling position H of operation post 60, stationary fixture 50 is utilized the upper side of connecting axle 30 to be fixed on a pair gripper shoe 62,62(reference Fig. 9 of workbench 60).Fixing by this stationary fixture 50, the connecting axle 30 of short size and the excavation shaft 20 that links with the bottom of connecting axle 30 can not to drop into the sea A from the coupling position H of the operation post 60 of hull 2.In addition, the transfer valve 15 of joint axis 13 is made to become closed condition, and, the joint axis 13 pulling down rig 12 and the connecting pin 18 linked with the upper end of the connecting axle 30 of short size.
Next, be involved in the wire rope 5a of hoist engine 5, and as shown in figure 12, make a pair rig 12,12 rise to the position of regulation along the guide pillar 11 being erected on hull 2.
Next, as shown in figure 13, the axle storage platform 40 that the connecting axle 30 of state to two short sizes making to erect setting is received moves to the coupling position H of the below of the joint axis 13 of each rig 12 being in lifting position from the position of readiness G of the operation post 60 of hull 2.
Next, roll out the wire rope 5a of hoist engine 5, and as shown in figure 14, a pair rig 12,12 is declined along the guide pillar 11 being erected on hull 2, make to be erected on the chimeric with the engaging recessed part 13c of the bottom of the joint axis 13 of each rig 12 by the locking protuberance 33 of the upper end of the connecting axle 30 newly established of spreading of axle storage platform 40, utilize connecting pin 18 connection joint axle 13 bottom and by the upper end of the connecting axle 30 newly established of spreading.Further, make the transfer valve 15 of joint axis 13 become open mode, and make the transfer valve 35 of the connecting axle 30 newly established of spreading become closed condition.
Next, be involved in the wire rope 5a of hoist engine 5, and as shown in figure 15, a pair rig 12,12 is made to rise to the position of regulation along the guide pillar 11 being erected on hull 2, afterwards, as shown in figure 16, make the axle of change sky receive platform 40 move from the coupling position H of below of joint axis 13 of each rig 12 being in lifting position and be back to the position of readiness G of the operation post 60 of hull 2.The axle storage platform 40 making to be retracted into this position of readiness G receives the connecting axle 30 of two short sizes of spreading next time.
Next, roll out the wire rope 5a of hoist engine 5, and as shown in figure 17, a pair rig 12,12 is declined along the guide pillar 11 being erected on hull 2, make the locking protuberance 33 of the upper end of the connecting axle 30 respectively arranged chimeric with by the engaging recessed part 34 of the bottom of each connecting axle 30 newly established of spreading, the bottom utilizing connecting pin 18 to link each connecting axle 30 newly established and the upper end of connecting axle 30 arranged.Further, make the transfer valve 35 of each connecting axle 30 newly established of spreading become open mode, and pull down the stationary fixture 50 of the upper side of the fixing connecting axle 30 respectively arranged.
Next, as shown in figure 18, by each rig 12, two of link connecting axles 30,30 and each excavation shaft 20,20 are rotated respectively and decline, and make them be inserted into the prescribed depth of the improvement ground C of marine A.During this insertion, discharge to improvement ground C from the outlet opening 26 of each excavation shaft 20 and inject curing materials E, be uniformly mixed the excavation soil D and curing materials E in improvement ground C, and as shown in Figure 1, built up improvement stake F by the solidification of curing materials E.Like this, while the connecting axle 30 newly established at the connecting axle 30 arranged successively spreading many will be while will excavate shaft 20 and be inserted into the prescribed depth of the improvement ground C of marine A, during this insertion, discharge to improvement ground C from the outlet opening 26 excavating shaft 20 and inject the curing materials such as cement paste, cement emulsion slurry E, be uniformly mixed the excavation soil D and curing materials E in improvement ground C, built up the improvement stake F of specific length by the solidification of this curing materials E.In addition, after building up, dismantle successively from being positioned at the connecting axle 30 of upside.
Like this, the joint axis 13 of the upper end of the connecting axle 30 linking short size is set at rig 12, the axle received with the connecting axle 30 of the state making it upright to two short sizes storage platform 40 is set to the coupling position H that can move back and forth the below of the joint axis 13 to the rig 12 being in lifting position from the position of readiness G of the operation post 60 hull 2, and is provided with in the mode that can freely load and unload at the coupling position H of the operation post 60 of hull 2 and prevents from connecting axle 30 and excavate shaft 20 dropping into the sea from this hull 2 stationary fixture 50 of A.Thereby, it is possible on hull 2 connecting axle 30 of with stable state and the in short time short size of spreading successively.Thus, there is the conditional place of marine site equal altitudes of airport periphery of aviation restriction, also offshore construction can be carried out safely, and can in the improvement ground C of marine A efficiently and build up in short time by the improvement stake F excavating native D and curing materials E and form.
In addition, be provided with the stream 13a of supply curing materials E in the joint axis 13 of rig 12, and be provided with the transfer valve 15 making stream 13a open closedown in joint axis 13.Thus, during the upper end of the connecting axle 30 by short for next one size and the joint axis 13 of rig 12 link, if make transfer valve 15 become closed condition, then can reliably prevent the curing materials such as cement paste, cement emulsion slurry E from flowing out from the stream 13a of joint axis 13.Thus, the marine pollution caused because of curing materials E can reliably be avoided.
Further, the stream 32 of upper end to lower end supply curing materials E of the axle main body 31 of the connecting axle 30 from short size is set in through mode, and is provided with the transfer valve 35 making stream 32 open closedown in the bottom of axle main body 31.Thus, during the upper end being fixed on the connecting axle 30 of operation post 60 by stationary fixture 50 links the bottom of the connecting axle 30 of next short size, if make transfer valve 35 become closed condition, then can reliably prevent the curing materials such as cement paste, cement emulsion slurry E from flowing out from the stream 32 being fixed on the upper end of the connecting axle 30 of operation post 60 by stationary fixture 50.Thus, the marine pollution caused because of curing materials E can reliably be avoided.
Namely, when carrying out the non-supply of spreading or the curing materials E that pulls down to the connecting axle 30 of short size, by making transfer valve 35 become closed condition in advance, reliably can prevent curing materials E from flowing out from the stream 32 of connecting axle 30, reliably can avoid the marine pollution caused because of curing materials E.Thus, there is the conditional place of marine site equal altitudes of the airport periphery that aviation limits, also can feel at ease and carrying out offshore construction safely.
And, the hole 31b of circular cross section is formed with in the mode orthogonal with stream 32 in the bottom of the axle main body 31 of the connecting axle 30 of short size, be provided with cylindric in the mode that can freely rotate in the hole 31b of this circular cross section and there is the transfer valve 35 with the opening 35a of stream 32 same shape, 90 ° are rotated by making this transfer valve 35, the opening 35a of transfer valve 35 is communicated with the stream 32 of axle main body 31, or makes it to close.Thus, by simple structure, reliably can open and close the opening 35a of transfer valve 35 and the stream 32 of axle main body 31.
In addition, be provided with at least one end 35b of columned transfer valve 35 operating portion 35c transfer valve 35 being carried out to handover operation, and operating portion 35c is given prominence to more laterally than the hole 31b of the circular cross section of axle main body 31.Thereby, it is possible to utilize operating portion 35c simply and reliably carry out the opening 35a of transfer valve 35 and the stream 32 of axle main body 31 open closedown.
And, in the upper end of the axle main body 30 of the connecting axle 30 of short size, be provided with the locking protuberance 33 of the hexagon convex form chimeric with the engaging recessed part 13c of the hexagon concave shape of the joint axis 13 being arranged at rig 12, and, in the bottom of axle main body 31, be provided with the locking protuberance 27 of the hexagon convex form excavating shaft 20, by the engaging recessed part 34 of the chimeric hexagon concave shape of the locking protuberance 33 of the hexagon convex form of the upper end of the connecting axle 30 of spreading.Thus, the engaging recessed part 13c of the hexagon concave shape of the joint axis 13 of rig 12 is embedded in by the locking protuberance 33 of the hexagon convex form of the upper end by axle main body 31, in addition, the engaging recessed part 34 of the hexagon concave shape of the bottom of axle main body 31 is embedded in excavate shaft 20 upper end hexagon convex form locking protuberance 27 or by the locking protuberance 33 of the hexagon convex form of the upper end of the connecting axle 30 of spreading, them can be made mutually not dally, can by axle main body 31 reliably respectively with the joint axis 13 of rig 12 with excavate shaft 20 or linked by the connecting axle 30 of spreading.
Figure 19 is the stereogram of the connecting axle of the short size of the transfer valve of the embodiment with other.
In other embodiment, at at least one end 35b of columned transfer valve 35, be provided with operating portion 35c transfer valve 35 being carried out to handover operation, make operating portion 35c be positioned at the inboard of the hole 31b of the circular cross section of axle main body 31, and make it to give prominence to more laterally unlike the outer peripheral face 31a of axle main body 31.Thereby, it is possible to utilize operating portion 35c simply and reliably carry out the opening and closing of the opening 35a of transfer valve 35 and the stream 32 of axle main body 31, and operating portion 35c can not be made outstanding laterally and become obstruction.
Figure 20 (a) represents that the transfer valve of the embodiment utilizing other is to close the partial perspective view of the state of the stream of the connecting axle of short size, and Figure 20 (b) represents the partial perspective view utilizing this transfer valve to open the state of the stream of the connecting axle of short size.
In other embodiment, be formed with the hole 31b of circular cross section in the bottom of the axle main body 31 of the connecting axle 30 of short size in the mode orthogonal with stream 32, be provided with cylindric in the mode that can be free to slide along the longitudinal direction in the hole 31b of circular cross section and there is the transfer valve 35 with the opening 35a of stream 32 same shape.And, make transfer valve 35 slide guage measured length along the longitudinal direction, thus as shown in Figure 20 (a), the opening 35a of transfer valve 35 and the stream 32 of axle main body 31 are closed, or as shown in Figure 20 (b), the opening 35a of transfer valve 35 is communicated with the stream 32 of axle main body 31.Thus, by simple structure, reliably can open and close the opening 35a of transfer valve 35 and the stream 32 of axle main body 31.In this situation, as shown in other the embodiment of Figure 19, operating portion 35c also can be made to be positioned at the inboard of the hole 31b of the circular cross section of axle main body 31, and make it to give prominence to more laterally unlike the outer peripheral face 31a of axle main body 31.Thereby, it is possible to utilize operating portion 35c simply and reliably carry out the opening 35a of transfer valve 35 and the stream 32 of axle main body 31 open closedown, and operating portion 35c can not give prominence to laterally and become obstruction.
In addition, in above-mentioned embodiment, in the side of operation post, can freely move back and forth from position of readiness the axle storage platform that the connecting axle of state to two short sizes that the mode to coupling position is provided with to make it upright receive, but the present invention is not limited to this.Such as, axle storage platform also can be set in the both sides of operation post respectively, make each axle receive platform and alternately move back and forth and increase the supply radical of the connecting axle of spreading.In addition, in above-mentioned embodiment, discharge curing materials when inserting and excavating shaft from outlet opening and build up improvement stake, but also can discharge curing materials when extracting and excavating shaft from outlet opening and build up improvement stake.And, in above-mentioned embodiment, describe and utilize two to excavate shafts to be uniformly mixed and to excavate soil and curing materials and the twin axle ground improvement device that builds up improvement stake, but utilizing the single axle ground improvement device of an excavation shaft, utilizing in the multiaxial type ground improvement device of the excavation shaft of more than three and certainly also can use above-mentioned embodiment.
Here cite the full content of No. 2012-282159, Japanese Patent Application (applying date: on December 26th, 2012).
Claims (2)
1. excavate a connecting axle for shaft, it is for ground improvement device,
This ground improvement device possesses: in the mode that freely can be elevated in vertical along the guide pillar being erected on hull by the excavation shaft supported, this excavation shaft is rotated while the driving machine that is elevated, and spreading is to the connecting axle of many short sizes of above-mentioned excavation shaft, on above-mentioned hull, while at the upper end of above-mentioned excavation shaft and spreading to the connecting axle of the upper end above-mentioned short size of spreading many successively of the connecting axle of the above-mentioned short size of the upper end of this excavation shaft, while above-mentioned excavation shaft to be inserted into freely the prescribed depth of marine improvement ground, discharge to above-mentioned improvement ground from the outlet opening of above-mentioned excavation shaft and inject curing materials, be uniformly mixed the excavation soil in above-mentioned improvement ground and above-mentioned curing materials and build up improvement stake by the solidification of above-mentioned curing materials,
The feature of the connecting axle of above-mentioned excavation shaft is,
Above-mentioned connecting axle axle main body from the vertical of upper end to lower end, in through mode, a poroid stream of the circular cross section that supplies above-mentioned curing materials is set,
In the bottom of above-mentioned axle main body, form the hole of circular cross section in the mode orthogonal with above-mentioned stream,
In the hole of this circular cross section, the columned transfer valve had with an opening of above-mentioned stream same shape is set in the mode that can freely rotate,
By making above-mentioned transfer valve rotate predetermined angular, make fluid communication or the closedown of the above-mentioned opening of this transfer valve and above-mentioned axle main body,
In at least one end of above-mentioned columned transfer valve, the operating portion this transfer valve being carried out to handover operation is set,
This operating portion is integrally formed in the mode exposed in the hole of the circular cross section of above-mentioned axle main body.
2. excavate a connecting axle for shaft, it is for ground improvement device,
This ground improvement device possesses: in the mode that freely can be elevated in vertical along the guide pillar being erected on hull by the excavation shaft supported, this excavation shaft is rotated while the driving machine that is elevated, and spreading is to the connecting axle of many short sizes of above-mentioned excavation shaft, on above-mentioned hull, while at the upper end of above-mentioned excavation shaft and spreading to the connecting axle of the upper end above-mentioned short size of spreading many successively of the connecting axle of the above-mentioned short size of the upper end of this excavation shaft, while above-mentioned excavation shaft to be inserted into freely the prescribed depth of marine improvement ground, discharge to above-mentioned improvement ground from the outlet opening of above-mentioned excavation shaft and inject curing materials, be uniformly mixed the excavation soil in above-mentioned improvement ground and above-mentioned curing materials and build up improvement stake by the solidification of above-mentioned curing materials,
The feature of the connecting axle of above-mentioned excavation shaft is,
Above-mentioned connecting axle axle main body from the vertical of upper end to lower end, in through mode, a poroid stream of the circular cross section that supplies above-mentioned curing materials is set,
In the bottom of above-mentioned axle main body, form the hole of circular cross section in the mode orthogonal with above-mentioned stream,
In the hole of this circular cross section, the columned transfer valve had with an opening of above-mentioned stream same shape is set in the mode that can freely slide,
By making above-mentioned transfer valve slide guage measured length, make fluid communication or the closedown of the above-mentioned opening of this transfer valve and above-mentioned axle main body,
In at least one end of above-mentioned columned transfer valve, the operating portion this transfer valve being carried out to handover operation is set,
This operating portion exposes in the mode that the outer peripheral face unlike above-mentioned axle main body is more outstanding in the hole of the circular cross section of above-mentioned axle main body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-282159 | 2012-12-26 | ||
| JP2012282159A JP5303677B1 (en) | 2012-12-26 | 2012-12-26 | Drilling and stirring shaft joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103898897A CN103898897A (en) | 2014-07-02 |
| CN103898897B true CN103898897B (en) | 2015-04-22 |
Family
ID=49529437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310675897.3A Expired - Fee Related CN103898897B (en) | 2012-12-26 | 2013-12-11 | Connecting shaft of excavating and stirring shaft |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5303677B1 (en) |
| CN (1) | CN103898897B (en) |
| HK (1) | HK1194116A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7202955B2 (en) * | 2019-04-02 | 2023-01-12 | 株式会社オーケーソイル | Ground improvement system, ground improvement method, rod stand, suspension device, connecting rod installation method and connecting rod removal method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939664A (en) * | 1973-07-09 | 1976-02-24 | Solmarine S.A. | Large diameter tubular piles and the bedding thereof |
| CN1088283A (en) * | 1992-12-10 | 1994-06-22 | 株式会社建调神户 | The grouting equipment of drifter drill for underground |
| CN1233696A (en) * | 1999-03-22 | 1999-11-03 | 中国化学工程第一岩土工程有限公司 | Comprehensive foundation and its construction technology by using spiral soil lifting and pressure filling mortar for producing piles in situ |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0222545Y2 (en) * | 1985-07-23 | 1990-06-18 | ||
| JP2582643Y2 (en) * | 1993-11-11 | 1998-10-08 | 株式会社三東工業社 | Self-sealing device for connecting part of chemical liquid supply type excavation work rod |
| JPH08144261A (en) * | 1994-11-21 | 1996-06-04 | Kobe Steel Ltd | Stirring device for soil improvement |
| JP4890043B2 (en) * | 2006-02-10 | 2012-03-07 | 株式会社竹中工務店 | Contaminated soil treatment method by deep mixing treatment |
| JP2010001694A (en) * | 2008-06-23 | 2010-01-07 | Shin Gijutsu Koei Kk | Soil improving apparatus |
-
2012
- 2012-12-26 JP JP2012282159A patent/JP5303677B1/en active Active
-
2013
- 2013-12-11 CN CN201310675897.3A patent/CN103898897B/en not_active Expired - Fee Related
-
2014
- 2014-07-23 HK HK14107502.0A patent/HK1194116A1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939664A (en) * | 1973-07-09 | 1976-02-24 | Solmarine S.A. | Large diameter tubular piles and the bedding thereof |
| CN1088283A (en) * | 1992-12-10 | 1994-06-22 | 株式会社建调神户 | The grouting equipment of drifter drill for underground |
| CN1233696A (en) * | 1999-03-22 | 1999-11-03 | 中国化学工程第一岩土工程有限公司 | Comprehensive foundation and its construction technology by using spiral soil lifting and pressure filling mortar for producing piles in situ |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103898897A (en) | 2014-07-02 |
| JP2014125765A (en) | 2014-07-07 |
| JP5303677B1 (en) | 2013-10-02 |
| HK1194116A1 (en) | 2014-10-10 |
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