JPH05321564A - Shaft intrusion device - Google Patents

Abstract

PURPOSE:To carry a large number of extension shafts under a stabilized state from a housing position to an intruding position in an attempt to inhibit an increase in the weight and size of a device. CONSTITUTION:Extension drilling shafts 24 are laid out in both width and length in an erected state and housed in a shaft housing device 14. A take out carrier 16 is installed to the shaft housing device 14. This take out carrier 16 suspends the above drilling shafts 24 on a column unit basis. Each of the drilling shafts 24 is carried to a shaft intruding and pulling device simultaneously by allowing the take out carrier to travel thereat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation construction machine such as a ground suspension water wall construction machine or a ground improvement machine, a boring machine, etc., for connecting a plurality of shafts and penetrating them into the ground. Of the device.

[0002]

2. Description of the Related Art Generally, a long shaft is often used in the above-mentioned foundation construction machine. For example,
In the ground agitation type ground improvement device, agitation shafts of tens of meters are installed vertically. Since such a long shaft is extremely difficult to manufacture and transport as it is, it is generally divided into a plurality of parts in the axial direction and appropriately inserted at the construction site to penetrate into the ground.

Further, in recent years, various types of devices have been proposed in which the shafts are automatically connected to each other while penetrating them. For example, in Japanese Unexamined Patent Publication No. 2-243817, while the stirring shaft stored in the stirring shaft holding device unit is gripped by the stirring shaft gripping device unit, the stirring shaft unit is swung to move the stirring shaft to the front surface of the guide frame, and sequentially. It is shown to be replenished and supplied to a fixed position. In addition, Japanese Patent Publication No. 3-4419
In Japanese Patent No. 8 publication, a joint holder provided at the tip of an arm grips two shafts stored in a storage position at a time, and then these shafts are moved from the storage position as the arm rotates. It is shown that it is moved horizontally to the penetration position at the same time. This device has the advantage that the two shafts can be transferred and penetrated at the same time.

[0004]

In recent years, in order to improve the efficiency of the work of penetrating the shaft, it has been desired to develop a device for penetrating three or more shafts in one direction at the same time.

Here, in each of the devices disclosed in the above publications, the shaft is gripped by the tip of a turning member such as an arm, and the shaft is transferred by the turning of the turning member.
Although it is possible to supply a small number of shafts such as two or two, when supplying a large number of shafts of three or more at once, the strength of the swiveling member must be increased until the weight of these shafts can be withstood. In addition, the increase in weight due to the reinforcement cannot be avoided. In addition, a large space is required for the turning, which greatly hinders downsizing of the device. Further, when a large number of shafts are swiveled at one time, the device is likely to lose its balance, which may impair the stability of the machine.

In view of such circumstances, the present invention provides a shaft penetrating device capable of stably supplying a plurality of shafts at the same time and adding and penetrating them while suppressing an increase in weight and size of the entire device. The purpose is to do.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to a shaft penetrating device for penetrating the ground while sequentially adding the shafts to each other, and holding a plurality of shafts arranged in a predetermined penetrating direction. , A penetration means for penetrating these shafts into the ground at the same time, and a shaft accommodating means for accommodating a plurality of shafts both in the penetrating direction and in the accommodating direction substantially orthogonal thereto, and accommodating in an upright state, A moving member installed in the shaft accommodating means so as to be able to travel in the accommodating arrangement direction above each axis, and a movable member that can be moved up and down and arranged in the penetrating arrangement direction in the shaft accommodating means. And an elevating member for holding all the shafts at once (Claim 1).

Further, since it is provided with a shaft holding means which is installed so as to be able to move up and down in the vicinity of the penetration position and holds all the shafts conveyed to the penetration position of the penetration means at one time, it is more excellent as described later. An effect is obtained (Claim 2).

Further, according to the present invention, a plurality of shafts are held in a state of being arranged in a predetermined penetrating arrangement direction, and a penetrating means for penetrating these shafts simultaneously into the ground, and a base installed on the ground. A shaft that is installed on the base so that it can travel in a storage arrangement direction that is substantially orthogonal to the penetration arrangement direction, and that stores a plurality of shafts in both the penetration arrangement direction and the storage arrangement direction and in an upright state. And a storage position of each shaft in the shaft storage means so that each shaft stored in the shaft storage means reaches a penetration position by the penetration means by traveling of the shaft storage means. (Claim 3).

[0010]

According to the apparatus of the first aspect, it is possible to add and penetrate a plurality of shafts in the following manner, for example.

First, the shaft is stored in each position of the shaft storing means,
Further, the elevating member moves the moving member to a position corresponding to the shaft arranged in the penetrating direction in the frontmost row (that is, the row closest to the penetrating means) in the shaft housing means, while the penetrating means penetrates the plurality of shafts. It is held in a state of being aligned in the arranging direction, and they are simultaneously penetrated into the ground to a predetermined depth. This penetration depth may be set as appropriate, but it is more preferred that the upper end of the penetrated shaft penetrates until it is located below the lower end of the supplementary shaft housed in the shaft housing means. After the penetration, the penetration means and the already penetrated shaft are separated to raise the penetration means to the upper limit position.

Next, all the shafts in the front row are simultaneously held by the elevating members, and the elevating members are lifted with respect to the moving members to suspend the shafts.
In this state, the conveying member is made to travel toward the penetrating means, and each shaft held by the elevating member is supplied to the penetrating position of the penetrating means. Then, at this position, the elevating member is lowered with respect to the moving member until the lower end of the connecting shaft reaches the upper end of the shaft that has already penetrated, and here the two shafts are connected. After that, the lifting member and each shaft are separated from each other, the moving member is retracted from the penetrating position, and the penetrating means is connected to each jointed shaft, so that the jointing can be immediately started from this state.

Further, according to the apparatus of the second aspect, the joining shaft is supplied to the penetrating position by the moving member and the elevating member, and the shaft holding means holds the joint shaft, and then the elevating member and each shaft are separated. As a result, the elevating member and the moving member can be retracted as they are, and the shaft holding member and the shaft held by the shaft holding member can be lowered during this time to perform the work of adding the shaft.

According to the apparatus of the third aspect, the shaft can be added and penetrated in the following manner.

First, the shaft is stored in each position of the shaft storing means,
Further, in a state in which the shaft accommodating means is made to stand by at a position apart from the penetration position of the penetration means, a plurality of shafts are simultaneously penetrated into the ground to a predetermined depth by the penetration means similarly to the above-mentioned device. With regard to this penetration depth, the penetration is made until it is located below the lower end of the connecting shaft housed in the shaft housing means.

Next, after separating the penetrating means from the penetrating shaft and raising the penetrating means to the upper limit position, until the shafts arranged in the penetrating direction in the front row in the shaft accommodating means reach the penetrating position. The shaft storage means is run on the base. Then, the penetrating means is lowered again to connect with the shaft housed in the shaft housing means, and the penetrating means is lifted again to lift each shaft. After that, return the shaft storage means to the original standby position,
By lowering the penetrating means and the shaft hung on the penetrating means and connecting these shafts with the already penetrated shaft, it is possible to immediately start the additional penetration of the shaft from this state.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In addition, in this embodiment, the six excavation shafts 24 are arranged in the width direction (the penetrating direction in the present invention; the horizontal direction in FIG. 2).
A multi-axis excavator which is arranged side by side and which simultaneously penetrates into the ground and penetrates will be described. However, in the present invention, the number of simultaneously penetrating shafts does not matter.

The excavator shown in FIGS. 1 and 2 is equipped with a base 12 that runs on the ground 10, and on this base 12, a shaft housing device (shaft housing means) 14, a take-out carrier 16, and a shaft penetrating and extracting. A device (penetration means) 18 and a shaft attaching / detaching device 20 are installed.

The shaft storage device 14 is provided with a shaft storage rack 21. The shaft storage rack 21 is erected on the base 12, and a shaft support device 22 is arranged on the upper surface of the base 12 in the shaft storage rack 21.

The shaft support device 22 is provided with a large number of shaft support cylinders 26 as shown in FIG. 3, and these shaft support cylinders 26 are fixed to the upper surface of the main body of the shaft support device 22 in a state of facing vertically. A support shaft 30 is rotatably supported in each shaft support cylinder 26 via a radial bearing 27 and a thrust bearing 28. The support shaft 30 is formed at a connecting portion 24a at the lower end of each excavation shaft 24. It has a shape that can be fitted into the fitting hole 25. The fitting hole 25 is a hole into which the upper end portion of the other digging shaft 24 is fitted when the digging shafts 24 are connected to each other. The excavation shafts 24 are supported in the shaft storage rack 21 by the number of the support shafts 30.

By the way, in this embodiment, as shown in FIG. 2, six excavating shafts 24 arranged in the width direction of the machine are arranged in four rows in the longitudinal direction of the machine as shown in FIG.

On the lower surface of the shaft support cylinder 26, the bolt 3
The speed reducer 34 is fixed by 1, 32 etc., and the output shaft 38 of the speed reducer 34 is connected to the support shaft 30 via a key 40 so as not to rotate relative to the output shaft 38, while the output shaft 38 rotates about the input shaft of the speed reducer 34. The drive shaft of the directional positioning motor 36 is connected. Therefore, by the operation of the rotation direction positioning motor 36, the support shaft 30 and the excavation shaft 24 are integrally driven to rotate about their own axis via the speed reducer 34.

The drive shaft of each rotation direction positioning motor 36 has a storage side rotation angle sensor 42 including a potentiometer or the like.
Is connected to the storage side rotation angle sensor 42, and the rotation angle from the reference angle of the drive shaft of the rotation direction positioning motor 36, in other words, the rotation phase of the excavation shaft 24 supported by each support shaft 30 is the axis. Each is individually detected.

The take-out carrier 16 is the shaft storage device 14 described above.
The excavation shafts 24 stored in the column are taken out row by row (that is, six rows each) and supplied to the shaft penetration and extraction device 18. The structure is shown in FIGS.

A pair of left and right guide rails 44 is laid in the front-rear direction (left-right direction in FIG. 4) on the upper end of the shaft storage rack 21, and a traveling machine (moving member) can be run along the guide rails 44.
46 is installed. The traveling machine 46 includes wheels 47 and 48 rolling on the guide rail 44, and a traveling motor 5 that rotationally drives the wheels 48 via gears 49a and 49b.
0, and an elevator 52 is provided at the front end of the traveling machine 46.

The elevator 52 includes a frame 54 fixed to the traveling machine 46, and a plurality of upper and lower cylinders 56 are fixed to the frame 54 downward. A bracket 58 is fixed to the tip (i.e., lower end) of the rod 56a of each of the upper and lower cylinders 56, and a holding frame (elevating member) 60 is connected to the bracket 58 in a horizontal state. Further, as shown in FIGS. 4 and 6, a guide rod 62 extending upward is fixed to the grip frame 60, and
A guide cylinder 64, through which each guide rod 62 is inserted, is fixed to the frame 54 side, and the grip frame 60 holds the frame 54 while the guide cylinder 64 and the guide rod 62 slide as the upper and lower cylinders 56 expand and contract. It is designed to move up and down.

5 and 7, the guide rod 62 and the guide cylinder 64 are not shown for the sake of convenience.

As shown in FIGS. 7 and 8, the grip frame 60 is provided with a pair of front and rear aggregates (a pair of upper and lower in FIG. 7) extending horizontally. Both aggregates 60c are intermittently connected by a plurality of transverse bones 60a, and the appropriate transverse bones 6
0a is connected to the lower ends of the rods 56a of the upper and lower cylinders 56, and holes 60b through which the upper ends of the respective excavation shafts 24 pass are formed between the horizontal frames 60a.

A plurality of pairs of gripping cylinders 66 are fixed inward at appropriate positions of both aggregates 60a, and a bracket 68 is provided at the tip of rod 66a of each gripping cylinder 66 via a bracket 68. A pair of front and rear shaft grip plates 70 are fixed. Both shaft grip plates 70 extend in the horizontal direction over a region substantially equivalent to the aggregate 60a, and grip parts for gripping the upper end of each excavation shaft 24 from the front and the back are formed at appropriate positions as shown in FIG. Has been done.

In the vicinity of the guide rail 44,
Positioning means consisting of limit switches etc. is provided,
The gripping frame 60 is used for the excavation shaft 2 in the shaft holding rack 21.
4, a traveling control operation, that is, a positioning operation of the traveling machine 44 is performed so that the traveling machine 44 is stopped at a position immediately above 4 or a shaft penetration position by the shaft penetration extraction device 18 described later.

As shown in FIGS. 1 and 2, the shaft penetrating / pulling-out device 18 is provided with a gate-shaped frame 71 erected on the base 12. The portal frame 71 includes a lifting housing 88.
Is supported so that it can be moved up and down.
Is pulled up by winding a pull-out winch (not shown),
On the contrary, it is designed to be pulled down positively by hoisting a penetrating winch (not shown).

A drive shaft 72 extending in the vertical direction as shown in FIG. 9 is rotatably provided in the lift housing 88. The upper end of the drive shaft 72 is connected to a modifier tank (not shown) via a swivel joint 74 and a modifier supply port 76. A tubular member 78 is fixed to an intermediate portion of the drive shaft 72, and the tubular member 78 is rotatably supported by a housing of a speed reducer 80 fixed to the elevating housing 88 via a bearing 79. A gear 82 is fixed to the outer peripheral surface of the cylindrical member 78, and the gear 82 is meshed with a gear 84 of the speed reducer 80.
The input shaft of the speed reducer 80 is the excavation motor 85 shown in FIG.
Is linked to.

The lower part of the drive shaft 72 is the thrust bearing 8
It is thrust-supported to the inner plate 88a of the elevating housing 88 via 6, and a chuck 90 is connected to the lower end of the drive shaft 72 via a flange 89. The chuck 90 is configured to be switchable between a state in which the upper end of the excavation shaft 24 is held and a state in which the upper end is opened. Therefore,
By rotating the shaft rotation drive motor 85 while holding the excavation shaft 24 by the chuck 90, the drive shaft 72, the flange 89, the chuck 90, and the excavation shaft 24 are integrally rotated via the speed reducer 80. It can be driven.

Further, the chuck 90 and each excavation shaft 24
Also has a cylindrical shape with a through hole in the center, and the ground improvement agent in the improvement agent tank (not shown) flows through the inside of the improvement agent supply port 76, the swivel joint 74, the drive shaft 72, the chuck 90, and the excavation shaft 24. It is adapted to be supplied to the ground 10 through the ground.

A gear 92 is fixed at an appropriate position on the drive shaft 72, and a gear 94 meshed with the gear 92 is rotatably supported by the elevating housing 88. A rotation shaft 96 of the gear 94 rotates on the drive side. The corner sensor 98 is connected. The drive-side rotation angle sensor 98 is composed of a potentiometer or the like, and is configured to detect the rotation angle of the rotation shaft 96, in other words, the rotation phase of the excavation shaft 24 connected to the drive shaft 72.

In the present invention, the specific connecting structure of the shafts does not matter, and therefore, the shape of the fitting hole 25 may be various, but the shape of the upper end portion of the support shaft 30 may be set according to this shape. For example, the excavation shaft 24 can be supported by the support shaft 30. For example, even if the cross-sectional shapes of the support shaft 30 and the fitting hole 25 are not irregular but completely circular, the excavation shaft 24 and the support shaft 30 are integrally rotated by the frictional force caused by the weight of the excavation shaft 24. Is possible. In addition, regardless of the insertion of the support shaft 30 as described above, the excavation shaft 24
The excavation shaft 24 can also be supported by holding the upper end portion, the lower end portion, and the like from the outside.

An axial guide device 100 as shown in FIGS. 1 and 2 is provided in the middle abdomen of the portal frame 71. The shaft guide device 100 includes a base 102 extending in the entire width direction (the left-right direction in FIG. 2) of the gate frame 71, and both ends of the base 102 are fixed to both columns of the gate frame 71. A bracket 104 is erected on both left and right wings of the base 102, and an arm member 105 is attached to the bracket 104 so as to be rotatable around a horizontal axis.

This arm member 105 is used for the undulating cylinder 1.
The arm 10 is configured to be rotationally driven by expansion and contraction of 10, and has a plurality of arms 106 extending in the rotational radial direction, and a guide claw 108 is provided between each arm 106. Each of the guide claws 108 has the arm member 105 shown in FIG.
It is provided at a position corresponding to the excavation shaft 24 held by each chuck 90 in a state of lying down as shown by the chain double-dashed line, and this excavation shaft 24 can be inserted from the rear (left side in FIG. 1). It is configured to be switchable between a normal state (open state) and a shaft guide state (closed state) that restricts the horizontal movement of the excavation shaft 24 and allows only the vertical movement.

The shaft attaching / detaching device 20 automatically connects the upper end of the first excavating shaft 24 which has already been penetrated into the ground 10 and the lower end of the second excavating shaft 24 to be penetrated next. Then
Alternatively, it is separated, and a conventionally known one or the like can be applied. However, in the present invention, the shaft attaching / detaching device 20 is not necessarily required, and the shaft connection and disconnection may be performed manually depending on the shaft joint structure.

This excavator is provided with a controller (not shown), which is used to position the excavation shaft 24 housed in the shaft housing device 14 in the rotational direction (that is, to adjust the rotational phase). There is.

Next, the operation of the excavator when the shaft penetrates will be described with reference to the time chart of FIG.

(A) The chuck 90 grips each of the six excavation shafts 24 in the first row, and the excavation motor 85 rotates forward, the pulling winch lowers, and the penetration winch winds. The individual digging shafts 24 are individually driven to rotate and penetrate into the ground. For more information,
By operating each excavating motor 85, the chuck 90 and each excavating shaft 24 connected thereto are rotationally driven about its own axis, and the entire lifting housing 88 is forcibly pulled down by the operation of both winches, so that the first row All the excavation shafts 24 of the above are simultaneously penetrated into the ground 10. And these excavation axes 24
Of the excavating motor 85, the upper end of each excavating shaft 24 is lower than the lower end of the supplementary shaft 24 accommodated in the shaft accommodating device 14, The operation of the extractor / penetration winch is stopped, and the penetration operation of the first row excavation shaft 24 is completed.

(B) Each excavation shaft 2 detected at the end of penetration
The rotation phase of No. 4 is detected by the drive side rotation angle sensor 98, and this phase and the rotation phase of the second row excavating shaft 24 stored in the shaft storage device 14 are individually compared, and both rotation phases are determined. A control signal is individually output from the controller to each rotary positioning motor 36 so as to match, and the second-row support shaft 30 and each excavation shaft 24 supported thereby are rotated to appropriate angles. By this phase adjustment, the already excavated first excavation shafts 24 in the first row and the next excavated excavation shafts 24 in the second row are ready to be connected.

At the stage before the penetration operation is started, the drive shaft 72 and the chuck 90 are appropriately rotated to reset the rotation angle thereof to a predetermined reference angle.

(C) During the adjusting operation, the chucks 90 holding the excavating shafts 24 in the first row are switched to the open state,
Each excavation shaft 24 is released from these chucks 90.

(D) By operating the pull-out winch in the winding direction, the elevating housing 88 is moved from the lower limit position (the position shown by the lower double-dashed line in FIG. 1) to the upper limit position (the upper double-dashed line in FIG. 1). (Position shown).

(E) During the raising operation of the elevating housing 88, the take-out carrier 16 takes out the second row of the excavating shafts 24 on the side of the shaft storage device 14. First, the traveling machine 46 is run for an appropriate distance to position the elevator 52 at a position above the second row excavating shaft 24. Next, the upper and lower cylinders 56 of the elevator 52 are extended to hold the gripping frame 6
0 is lowered and the gripping cylinder 6 of this gripping frame 60 is
By the extension of 6, both shaft gripping plates 70 are moved in a direction in which they approach each other (that is, inward direction), and the excavating shafts 24 in the second row are gripped by the both shaft gripping plates 70 at the same time. (Figs. 7, 8
Condition). In this state, the upper and lower cylinders 56 are contracted to pull up the second row excavation shaft 24 from the support shaft 30 at once.

(F) When the hoisting operation of the pull-out winch is completed, that is, when the elevating cylinder 88 reaches the uppermost position, the traveling machine 46 is advanced toward the shaft penetrating and extracting device 18 while the excavating shaft 24 is being lifted. Let At this time, the entire arm member 105 is laid down in a state in which the hoisting cylinder 110 of the shaft guide device 100 is contracted to open the guide claws 108, and the excavation shaft 24 conveyed by the unloading carrier 16 to each guide claw 108. Then, the traveling of the traveling machine 46 is stopped at this position. As a result, the excavation shafts 24 in the second row are positioned at the penetration positions of the elevating housings 88, that is, the positions directly above the excavation shafts 24 in the first row.

(G) The guide claws 108 are switched to the closed state to regulate the horizontal movement of the excavation shafts 24, and the upper and lower cylinders 56 are extended again in this state, whereby the respective excavation shafts 2 are moved.
4 down to the position where the lower end of the connecting portion 24a is fitted with the upper end of the first row excavating shaft 24 that has already penetrated,
The operation of the shaft attaching / detaching device 20 connects the upper end of the excavating shaft 24 in the first row and the connecting portion 24a of the excavating shaft 24 in the second row.

(H) Grasping cylinder 66 of take-out carrier 16
By contracting the two shaft grip plates 70,
Each excavation shaft 24 is released from these shaft grip plates 70.

(I) After the upper and lower cylinders 56 are contracted to raise the gripping frame 60, and the traveling machine 46 is actuated to start the retreat of the entire unloading carrier 16, the withdrawal winch lowering operation is started at a predetermined timing. , The elevating housing 88 is lowered by its own weight. Then, when each chuck 90 of the elevating housing 88 reaches the upper end portion of each excavation shaft 24, the descending operation of the elevating housing 88 is stopped, each chuck 90 is switched to the closed state, and each excavation in the second row. Hold the shaft 24.

(J) Open the guide claws 108 and extend the undulating cylinder 110 so that the arm member 105 as a whole is shown in FIGS.
The evacuation position shown in FIG. 2 is retracted, and in this state, in the same manner as described above, the second row gripped by the chuck 90 is operated by the operation of the excavating motor 85 in the forward rotation direction, the lowering operation of the pull-out winch, and the hoisting operation of the penetrating winch. Excavating shaft 24 of the first row, and the excavating shaft 24 of the first row connected to the excavating shaft 24 of the second row
Drive and rotate together and penetrate into the ground. Hereinafter, by repeating such an operation, it is possible to penetrate deep into the ground while successively adding a plurality of excavation shafts 24.

When the excavation shafts 24 are to be pulled out after the penetration, the reverse operation to the above may be performed. That is, the excavation shaft 24 is pulled up from the ground 10 while operating the excavation motor 85 in the reverse rotation direction, the excavation shaft 24 is disconnected from the excavation shaft 24 by the shaft attaching / detaching device 20, and then the extraction carrier 16 is removed.
Each excavation shaft 24 may be stored on the support shaft 30 by using.

As described above, with this device, the following effects can be obtained.

The excavation shaft 2 for extension in the shaft storage device 14
4 are arranged side by side vertically and stored, and the take-out carrier 16
By excavating, the excavation shafts 24 in the shaft storage device 14 are picked up in a row unit and are simultaneously conveyed to the penetration position. Therefore, compared with a conventional device that conveys the shafts by arm rotation. The excavation shaft 24 can be stably sent to the penetration position. Further, even if six pieces are supplied at the same time, the load on the strength of each member is small, and therefore the weight increase due to the reinforcement can be suppressed. Furthermore, the excavation axis 2
The space required for the transfer of No. 4 is also small, and the entire apparatus is not enlarged.

The shaft guide device 10 is attached to the shaft penetrating and extracting device 18.
Since 0 is provided, the excavation shaft 24 joined to the already penetrated excavation shaft 24 can be held in a stable state by the shaft guide device 100.

Since all the excavation shafts 24 are stored in an upright state, their storage space is small, and even if the shaft length of the excavation shafts 24 is increased to reduce the number of shaft additions, the above storage space is kept. Does not increase.

Next, a second embodiment will be described with reference to FIG. In this embodiment, the shaft holding member 130 is installed on the portal frame 71 of the shaft penetrating / pulling device 18 so as to be movable up and down. The shaft holding member 130 is configured to simultaneously grip all six shafts supplied to the penetration position at two upper and lower positions.

According to such an apparatus, as in the case of the above-described embodiment, after the row of excavating shafts 24 is supplied to the penetration position by the take-out carrier 16, the excavating shafts 24 are held by the shaft holding member 130, The take-out carrier 16 can be immediately retracted from this point. After retracting the unloading carrier 16, the shaft holding member 130 is lowered to move each of the excavating shafts 24.
Is connected to the already excavated excavating shaft 24, and both ends of the excavated excavating shaft 24 connected to the chuck 90 are connected to the shaft holding member 1
By separating 30 and each excavation shaft 24, it is possible to immediately replenish and start penetration from this state.

That is, in this device, since the take-out carrier 16 can be retracted before the excavation shaft 24 that has already penetrated is connected to the excavation shaft 24 by connecting the excavation shaft 24 and the excavation shaft 24, the above-mentioned excavation shaft 24 can be retracted. Take-out carrier 1 after connecting each other
As compared with a device for retracting 6, the time required for connecting the shafts to each other and connecting the excavation shaft 24 and the chuck 90 of the shaft penetrating and extracting device 18 can be further shortened. The work efficiency can be further improved.

Next, a third embodiment will be described with reference to FIGS. In this embodiment, the take-out carrier 16 in the previous embodiment is omitted, and instead, the shaft storage device 1 is used.
The whole 4 is installed on the base 12 so that it can travel in the storage arrangement direction (left and right direction in FIGS. 12 and 13).

Specifically, on the base 12, a pair of guide rails 140 extending in the storage arrangement direction is laid. On the other hand, the shaft storage device 14 includes a bottom wall 142 that supports each of the excavation shafts 24 and a pair of side walls 146 as shown in FIG.
And a back wall 144 provided on the side away from the shaft penetration / extraction device 18, and is in a state of being opened only at the front (right side in FIG. 13). A roller 148 rolling on the guide rail 140 is attached to the lower surface of the bottom wall 142, and the roller 148 is driven to rotate by a motor (not shown) to guide the entire shaft storage device 14. It is designed to run on the rail 140.

According to such an apparatus, the device of the above embodiment is
After performing the operations of (a) to (d), it is possible to add and penetrate by the following procedure.

(A) When the shaft accommodating device 14 is moved forward from the standby position shown in solid lines in FIGS. 12 and 13 (to the right in the drawing), and each of the excavating shafts 24 stored in the front row reaches the penetration position. To stop running.

(B) The elevating housing 88 is lowered to connect the chucks 90 to the upper end of the excavation shaft 24.

(C) The elevating housing 88 is pulled up to hoist each excavation shaft 24, and the entire shaft storage device 14 is retracted to return to the original standby position.

(D) The elevating housing 88 is lowered to connect the lower end of the suspended excavation shaft 24 to the upper end of the already penetrated excavation shaft 24. Then, the elevating housing 88 is lowered while operating the respective excavating motors 85, whereby additional penetration can be performed.

Thereafter, when the second and third additional penetrations are performed, the excavation shafts 24 stored in the second row, the third row, ... Of the shaft storage device 14 reach the respective penetration positions. By moving the entire shaft storage device 14 until that time, all the excavation shafts 24 can be supplied to the penetration position.

As described above, in this device, the shaft storage device 14 itself is made to travel to supply the excavation shaft 24 to the penetration position in the stored state, so that the excavation shaft 24 is transported. Can be performed in a more stable state. Further, it is not necessary to provide a special member to convey the excavation shaft 24, and the structure is further simplified.

The present invention is not limited to the above embodiments, and the following modes can be adopted as examples.

(1) In the present invention, regardless of the number of storage rows of the excavating shafts in the storage arrangement direction, it may be appropriately set according to the scale of the device.

(2) In the above embodiment, the excavating shafts 24 which are simultaneously penetrated are arranged in a complete straight line. However, in the present invention, the excavating shafts 24 are not necessarily in a straight line. Of course, for example, the positions may be slightly shifted in the storage arrangement direction so that they simultaneously penetrate. In addition, a plurality of excavation axes 24
May be arranged in an arc shape having a large radius of curvature so as to penetrate simultaneously. In this case, the excavation shafts 24 may be arranged in an arc shape in each row of the shaft storage means 14. Further, in the present invention, the penetrating and arranging directions may not be completely orthogonal to each other, and both may be slightly inclined.

(3) In the first and second embodiments described above, the gripping portion of the take-out carrier 16 does not necessarily have to grasp the upper end of the excavation shaft 24, but the middle portion of the gripping portion from both sides in the direction of penetration. Even with a sandwiched structure, the same effect as described above can be obtained.

(4) The present invention can be widely applied to a device for penetrating while connecting shafts to each other, and can be widely applied to various penetrating devices such as a ground improvement device and a boring device.

[0075]

As described above, according to the present invention, the following effects can be obtained.

In the apparatus according to the first aspect of the present invention, the conveying member and the elevating member are moved in the shaft accommodating means so that the shafts arranged in the penetrating direction in the shaft accommodating means are simultaneously supplied to the penetrating position row by row. Therefore, even if the number of shafts arranged in the penetrating direction is large, the shafts can be simultaneously conveyed to the penetrating position in a stable state. In addition, since the carrying member is lighter in terms of strength and the space required for carrying is smaller than in the conventional case, it is possible to effectively suppress an increase in weight and an increase in size of the entire apparatus.

Further, according to the apparatus of the second aspect, the shafts supplied to the penetrating position by the conveying member and the elevating member are transferred to the shaft holding means, so that these shafts are connected to the already penetrated shafts or the penetrating means. The conveying member and the elevating / lowering member can be retracted from the penetrating position before the operation, and thus there is an effect that the work efficiency can be further enhanced.

Further, in the apparatus according to the third aspect of the present invention, the shaft stored in the shaft storing means is supplied to the penetration position in the stored state by moving the entire shaft storing means on the base. Therefore, there is an effect that each shaft can be transported in a more stable state. In addition, it is possible to eliminate the need for a special member for transporting each shaft, and it is possible to further simplify the structure of the device.

[Brief description of drawings]

FIG. 1 is a side view of the multi-axis excavator.

FIG. 2 is a front view of the multi-axis excavator.

FIG. 3 is a cross-sectional view showing a main part of a shaft support device in the multi-axis excavator.

FIG. 4 is a side view of an extraction carrier in the multi-axis excavator.

FIG. 5 is a front view of the take-out carrier.

FIG. 6 is a plan view of the takeout carrier.

7 is a cross-sectional view taken along the line AA of FIG.

8 is a cross-sectional view taken along line BB of FIG.

FIG. 9 is a cross-sectional front view showing a main part of a shaft penetration and withdrawal device in the multi-axis excavator.

FIG. 10 is a time chart showing an operating state of each device during a penetration operation by the multi-axis excavator.

FIG. 11 is a side view of an excavator according to a second embodiment of the present invention.

FIG. 12 is a side view of an excavation shaft according to a third embodiment of the present invention.

FIG. 13 is a plan view of the excavation shaft.

[Explanation of symbols]

 10 Ground 12 Base 14 Shaft storage device (constituting shaft storage means) 16 Extraction carrier 18 Shaft penetration extraction device (penetration means) 24 Excavation shaft (axle) 46 Traveling machine (traveling member) 60 Grasping frame (elevating member) 130 Shaft Holding member (shaft holding means)

Claims (3)

[Claims] 1. A shaft penetrating device for penetrating a ground while sequentially connecting the shafts, wherein a plurality of shafts are held in a state of being arranged in a predetermined penetrating arrangement direction, and these shafts are simultaneously grounded. A penetrating means for penetrating into the shaft, a shaft accommodating means for accommodating a plurality of shafts in both the penetrating arrangement direction and an accommodating arrangement direction substantially orthogonal to the penetrating arrangement direction, and accommodating the shafts in an upright state; A moving member installed so as to be able to travel in the storage arrangement direction above and all the shafts arranged in the shaft accommodation means that can be moved up and down and arranged in the penetration arrangement direction at a time. A shaft penetrating device, comprising: 2. The shaft penetrating apparatus according to claim 1, further comprising a shaft holding means that is installed in the vicinity of the penetrating position so as to be able to move up and down and holds all the shafts conveyed to the penetrating position of the penetrating means at a time. A shaft penetrating device characterized in that 3. A shaft penetrating device for penetrating the ground while sequentially adding the shafts, wherein a plurality of shafts are held in a state of being arranged in a predetermined penetrating arrangement direction, and these shafts are simultaneously grounded. A penetrating means for penetrating into the ground, a base installed on the ground, and a traveling base installed on the base in a storage alignment direction substantially orthogonal to the penetration alignment direction, and a plurality of shafts are installed in the penetration alignment direction and the storage position. And a shaft storing means for storing in an upright state, arranged in both of the arranging directions so that the shafts stored in the shaft storing means reach the penetration position by the penetration means by traveling of the shaft storing means. A shaft penetrating device, characterized in that a storage position of each shaft in the shaft storing means is set.