JPH0771037A - Excavation device and penetration method of excavation body with excavation device - Google Patents

Abstract

PURPOSE:To increase penetration depth capable of penetrating an excavation body without adding an additional excavation body thereto in the ground without increasing rising and falling strokes of a liftable member in the case an underground cut-off wall is constructed. CONSTITUTION:A leader 16 bearing a ditch excavation body driving device 22 in a liftable manner is provided to a base machine 10. A liftable driving shaft 34 is stored to the inside of the leader 16, and a connection member 35 connected to the ditch excavation body driving device 22 is projected in the horizontal direction on the upper end thereof. First of all, after the ditch excavation body driving device 22 is directly connected to the connection member 35 to penetrate the ditch excavation body, the connection member 35 is pulled out, and a rod 36 is provided between the connection member 35 and ditch excavation body driving device 22 to penetrate the ditch excavation body again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating device for penetrating an excavation body such as an excavation shaft or a trench excavation body into the ground for the purpose of constructing a water wall for a ground stop, and a method for penetrating the excavation body by the excavation device. Is.

[0002]

2. Description of the Related Art Conventionally, for the purpose of constructing a water wall for land cancellation,
Development of a technique for excavating a hole in the ground by penetration of an excavation shaft or continuously excavating a linear groove in the ground by using a groove excavation body is underway.

18 to 21 show an example of a conventional excavating device. The illustrated base machine 110 includes a lower traveling body 113 having a crawler 112 and the like, and an upper revolving superstructure 114 is rotatably installed on this. A cylindrical leader (elevating support member) 116 extending vertically is supported on the upper swing body 114, and the leader 116 is supported from the rear by a stay 118 extending from the upper swing body 114.

A pair of left and right rails 120 are fixed to the reader 116 along the rails, and the rails 120 are fixed to each other.
The excavation shaft drive device 122 is supported along the above so as to be able to move up and down. The excavation shaft drive device 122 includes a gripping portion 123 that grips the excavation shaft 124 at a lower portion thereof. A lift drive shaft 134 that moves up and down with respect to the reader 116 is housed inside the reader 116.
A connecting portion 135 is provided at the upper end of the No. 4 so as to project forward (to the left in FIGS. 18 to 21). The connecting portion 135 is connected to the excavating shaft drive device 1 via the rod 136 in the vertical direction.
The excavation shaft drive device 122 is connected to the upper end of the excavator 22 so that the excavation shaft drive device 122 as a whole is moved up and down.

The undercarriage 1 of the base machine 110
An excavation shaft holding device 140 is installed below the reader 116 and can be switched between a state in which the excavation shaft 124 is held and a state in which the excavation shaft 124 is released, as needed.

Next, an example of the excavation method using this device will be described.

First, by using an unillustrated crane or the like, as shown in FIG.
As shown by the alternate long and two short dashes line, the excavation shaft driving device 122 is connected to the wire 1.
It is mounted on the rail 120 of the leader 116 while being suspended by 38, and then this excavation axis drive device 122 is attached to the rod 13
It connects with the connection part 135 via 6 (state of the solid line of the same figure).

Next, as shown in FIG. 19, a reader 116.
On the other hand, the elevation drive shaft 134 is raised to pull up the excavation shaft drive device 122 to the uppermost position. In this state, the wire 138 is used to suspend the excavation shaft 124 this time, and the excavation shaft 124 is carried to a position below the excavation shaft drive device 122. At this position, the excavation shaft holding device 140 or the like holds the excavation shaft 124 in an upright state. To do.

Next, the elevation drive shaft 134 and the excavation shaft drive device 122 are lowered to connect the grip 123 of the excavation shaft drive device 122 and the excavation shaft 140, and further,
By lowering the excavation shaft drive device 122 while rotating the excavation shaft drive device 122 about its own axis by the excavation shaft drive device 122, the excavation shaft 124 can penetrate into the ground as shown in FIG. .

In this way, after the excavation shaft 124 is penetrated by a depth substantially equal to the stroke of the elevating and lowering drive shaft 134, the excavation shaft 124 and the excavation shaft drive device 122 are separated and the excavation shaft drive device 122 is pulled up. The excavation shaft 124 'for replenishment is carried in in the same manner as in FIG. 19 and is connected to the upper end of the excavation shaft 124 that has already penetrated. Then, the excavation shaft drive device 122 is lowered to add the excavation shaft 12 for addition.
By connecting to the upper end of 4 ', as shown in FIG.
It is possible to further deeply penetrate while rotating the.

[0011]

In the above method, the depth at which the excavation shaft 124 can penetrate into the ground is determined by the elevation drive shaft 13.
No more than 4 lift strokes, no matter how long the drilling shaft 12
Even with No. 4, it cannot be penetrated at a depth greater than the above-mentioned lifting stroke. Therefore, if you want to penetrate at a depth greater than this lifting stroke, as described above,
After the relatively short excavation shaft 124 is penetrated, it is necessary to add the excavation shaft 124 'to this for additional penetration. vice versa,
When pulling out the excavation shafts, it is necessary to separate the excavation shafts 124 and 124 'while separating them one by one.

Such connection and disconnection of the excavating shafts 124 and 124 'requires a great deal of labor and a long time, which is a great obstacle to shortening the construction cycle time. Particularly, when a solidifying material such as cement or mortar is charged into the ground while penetrating or pulling out the excavating shafts 124 and 124 ', if the excavating shaft takes a long time, the input material is solidified in the middle of the excavating work, and the extraction work is performed. May cause trouble.

Further, as the excavation body, not the above-mentioned excavation shafts 124, 124 ', but the sprocket is provided at both ends of the vertically extending excavation frame, and the groove excavation in which a chain with a cutter is hung between the both sprockets. The above-mentioned base machine 1 in a state where the body is used and the trench excavation body is penetrated.
When running 0 to excavate a groove, it is not only necessary to divide the excavation frame into upper and lower parts, but also to add and penetrate, and before removing the chain, remove the chain once It is necessary to reconnect the chain between both sprockets after replenishing the chain, and the work of replenishing and separating the excavated body becomes even more troublesome.

In view of the above-mentioned circumstances, the present invention has an excavator and an excavator capable of increasing the depth of penetration without extending the elevating stroke of the elevating member and without replenishing the excavator. The purpose is to provide a penetration method of.

[0015]

SUMMARY OF THE INVENTION The present invention provides an excavation body drive device for holding an excavation body and driving the excavation body, an elevating support member for supporting the excavation body drive device so that the excavation body drive device can be moved up and down, and the elevating support member. A method of penetrating an excavation body by an excavating device, which is installed so as to be able to move up and down, and is provided with an elevating member that moves up and down integrally with the excavating body driving device when combined with the excavating body driving device. Directly connected, and while holding and driving the excavation body by the excavation body drive device, the elevating member and the excavation body drive device are lowered to penetrate the excavation body into the ground, and then the elevating member and the excavation body drive device are connected. To lift up the elevating member, insert a vertically extending connecting member between the elevating member and the excavation body driving device, and then lower the elevating member again to further penetrate the excavation body into the ground. Do It is (claim 1).

In this method, a coupling portion coupled to the excavation body driving device is projected to the upper end of the elevating member in a substantially horizontal direction, and the excavation body is inserted into the coupling portion with the excavation body driving device directly coupled thereto. Previously, the connecting member is preliminarily held in an upright state at a position different in the circumferential direction from a position where the excavation body is vertically movable in the elevating and lowering support member, and after the excavation body is penetrated, At least the connecting portion is pivoted with respect to the elevating / lowering support member, the upper end of the connecting member held by the elevating / lowering support member is connected to the connecting portion, and then the elevating / lowering member is raised, and at least the connecting portion in the elevating / lowering member And the lower end of the connecting member is connected to the excavation body driving device, and the elevating member is lowered again from this state. It is more preferable to further penetrate into the ground more the drilling member (claim 2).

Further, according to the present invention, an excavation body driving device for holding an excavation body and driving the excavation body, an elevating support member for supporting the excavation body drive device so as to be able to ascend and descend, and an elevating support member provided for being capable of ascending and descending. And an upper and lower member having a coupling portion that is coupled to the excavation body drive device and protrudes in a substantially horizontal direction at the upper end thereof, and holds the excavation body by the excavation body drive device and drives them while raising and lowering the excavation body. In the excavation device configured to penetrate the excavation body into the ground by lowering the excavation body integrally with the excavation device, at least the connecting portion of the elevating member is configured to be rotatable with respect to the elevating support member, and the swiveling is performed. A swivel drive means for swiveling and driving a feasible portion with respect to the elevating and lowering support member, a connecting member that can be interposed between the excavation body driving device and the coupling portion, and the excavator in the elevating and lowering support member. An apparatus provided with a connecting member holding means which is provided at a position different from the position where it can be lifted and lowered in the circumferential direction and which can switch between a state of holding the connecting member in an upright state and a state of releasing it (claim 4). ).

The above method and apparatus can be used as the excavated body,
It is more effective when the endless body having a digging blade on the surface is provided between the upper and lower rotary bodies and the groove excavation body is installed, and the above-mentioned lifting support member is installed on a traveling machine traveling on the ground. (Claims 3 and 5).

More preferably, the excavating device further comprises a drilling body restraining member that connects the lifting supporting member and the drilling body in a state of being engaged with the lifting supporting member in a vertically movable manner (claim 6). .

In this case, the excavation body restraining member is a raising and lowering restraining member which is engaged with the raising and lowering supporting member side so as to be able to rise and lower.
It is fixed to the excavation body side and is separated into a fixed restraint member which can be engaged with and disengaged from the lift restraint member only in the ascending / descending direction, and the lift restraint member and the fixed restraint member are relatively engaged with each other. In addition to being configured to be able to move up and down,
By providing the restraint member driving means for raising and lowering the lift restraint member, a more excellent effect as described below can be obtained (claim 7).

Further, as the restraint member driving means, a winch for winding and unwinding the wire connected to the lift restraint member is provided, and the winch is provided below the lift support member below the installation position. It is more preferable to provide a stopper for preventing the lifting of the lifting restraint member (Claim 8).

[0022]

According to the method of the present invention, the excavation body driving device and the connecting member are directly connected to each other, and then the excavation body is once penetrated, and the connecting member is interposed between the excavation body driving device and the connecting member. Since the penetration is performed again, it is possible to obtain the penetration depth for the above-described two penetration operations without adding the excavated body.

According to the method and the device of claim 4, the excavator drive device and the connecting member are directly connected to each other by holding the connecting member in the upright supporting member in the upright state in advance. After the digging body is once penetrated in this state, the coupling member can be interposed between the digging body drive device and the coupling member only by rotating the coupling member and moving the elevating member up and down.

In the method and apparatus according to claims 3 and 5, after the groove excavation body is penetrated into the ground by the above method, the traveling machine is caused to travel while driving the endless body of the groove excavation body, It is possible to excavate a groove along the traveling direction.

In the excavator, when the excavator drive unit is pulled up to a position higher than the elevating / lowering member when the connecting member is introduced, the excavator excavator drive unit is not restrained at all. Therefore, when the excavation body drive device is lowered again from this state to penetrate the excavation body, the excavation body drive device and the excavation body drive device are reached until the excavation body drive device reaches the lifting support member and is restrained again. The upper end of the drill easily fluctuates in the horizontal direction, especially when the excavation body hits hard geology or an underground obstacle, it becomes difficult for the excavation body to escape in the front-back direction or the left-right direction and keep the intrusion direction of the excavation body vertical. .

However, in the apparatus according to claim 6,
The excavation body restraining member engaged with the elevating and lowering support member restrains the excavation body on the side of the elevating and lowering support member, so that the excavation body is prevented from wobbling and its penetration direction is deviated. Further, since the excavation body restraining member can be moved up and down with respect to the elevation support member, it does not hinder the penetration of the excavation body.

Here, the excavation body restraining member is relatively large because it connects the elevating support member and the excavation body. Therefore, the excavation body restraining member should penetrate into the ground together with the excavation body. However, in the device according to claim 7, the excavation body restraint member is separated into a fixed restraint member on the excavation body side and a lift restraint member on the lift support member side.
By penetrating only the relatively small fixed restraint member with the excavation body into the ground, it is not necessary to remove the excavation body restraint member from the excavation body at the time of penetration. Further, by appropriately lowering the elevation restraint member as the excavation body drive device descends, interference between the elevation restraint member and the excavation body drive device can be avoided.

Here, in the apparatus according to the eighth aspect, the lifting restraint member can be raised and lowered only by winding and unwinding the wire by the winch. Further, since the stopper provided on the lifting support member prevents the lifting restraint member from being lowered below the installation position, the lifting restraint member accidentally falls due to its free fall when the wire is unwound by the winch. There is no risk of falling off the lifting support member.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.

The excavating device shown in FIGS. 1 and 2 includes a base machine 10. The base machine 10 includes a lower traveling body 13 provided with a crawler 12 and the lower traveling body 1.
3 and an upper revolving structure 14 arranged so as to be rotatable on
A leader (elevating support member) 16 is supported by the upper swing body 14.

The leader 16 has a cylindrical shape extending vertically, and a bracket 19 provided on an upper portion of the leader 16 is attached to the stay 1.
It is connected to a predetermined portion of the upper swing body 14 via 8. A pair of left and right rod-shaped rails 20 extending vertically are fixed to the leader 16, and these rails 20 have:
A groove excavation body drive device 22 is mounted so as to be slidable along the rails 20 (that is, capable of moving up and down).

The groove excavation body drive device 22 is provided with a sprocket 26, a motor 25 for rotationally driving the sprocket 26, and an upper excavation frame 23, the main body of which is a guided member 38.
The upper excavation frame 23 is attached to the rail 20 via the guided material 40 while being attached to the rail 20 via the guide material 40. An excavation frame body 24 is detachably connected to the lower end of the upper excavation frame 23. This drilling frame body 24
A sprocket 28 is rotatably attached to the lower end of the sprocket 28, and between the sprocket 28 and the sprocket 26,
An endless digging chain (endless body) 30 having a digging blade 32 on the surface is hung.

That is, in this embodiment, the upper excavation frame 23, the excavation frame main body 24, both sprockets 2 are provided.
6,28 and chain 30 for excavated body (groove excavated body)
The upper excavation frame 2 which is a part of the
3 and the sprocket 26 are in a state of being incorporated in the trench excavation body drive device 22.

An elevating drive shaft (elevating member main body) 34 that moves up and down with respect to the reader 16 is housed inside the reader 16. A coupling member 35 protruding horizontally from the elevation drive shaft 34 is provided at the upper end of the elevation drive shaft 34, and the coupling member 35 is coupled to the upper end of the excavation body drive device 22 via a rod 36. It has become.

The undercarriage 13 of the base machine 10 is also used.
The slider 4 is slidable along the traveling direction.
4 is provided, and the groove excavation body holding device 4 is attached to the slider 44.
6 is fixed. The groove excavation body holding device 46 can be switched between a state in which the groove excavation body is held and a state in which the groove excavation body is released at a position below the leader 16, and a device similar to a conventionally known device is used. .

A feature of this device is that the connecting member 35 is used.
Is configured to be rotatable about a vertical axis with respect to the lifting drive shaft 34. Specifically, this connecting member 35 is shown in FIGS.
As shown in FIG.
And a pair of coupling plates 50 projecting radially outward from the outer peripheral surface of the. A pair of upper and lower flange portions 51 and 52 as shown in FIG. 4 are fixed to the upper portion of the lifting drive shaft 34, and the outer fitting portion 48 is provided between the flange portions 51 and 52 on the peripheral surface of the lifting drive shaft 34. Is fitted so as to be slidable (that is, rotatable). On the other hand, a cylindrical portion 53 having a horizontal pin insertion hole 53a is fixed to the upper end of the rod 36, and the cylindrical portion 53 is detachably coupled to the coupling plate 50 via a pin 54. It has become so.

FIG. 5 shows an automatic attachment / detachment device 56 (not shown in FIG. 3) for performing the attachment / detachment. In the figure, a pin guide cylinder 57 and a mounting plate 58 are fixed to one coupling plate 50.

The pin guide cylinder 57 is provided at a position connected to a horizontal pin insertion hole 50a penetrating both connecting plates 50, and the pin 54 is inserted into the pin guide cylinder 57 so as to be movable in the axial direction. Has been done.

A central portion of a V-shaped link 60 is rotatably connected to the mounting plate 58 via a pin 62.
The head side end of the cylinder 65 is rotatably connected via a pin 64. One end of the V-shaped link 60 is rotatably connected to the end of the pin 54 via a pin 63, and the other end is rotatably connected via a pin 66 to a rod end of the cylinder 65. Connected to the department. Then, in a state where the cylindrical portion 53 is inserted between both coupling plates 50,
The V-shaped link 60 rotates as the cylinder 65 expands and contracts, and with this rotation, the pin 54 is inserted into the cylindrical portion 53 and is housed in the pin guide cylinder 57. Each member is arranged so as to move between them.

Although not shown in the drawing, the same as the cylindrical portion 53 is fixed to the upper end of the groove excavation body drive device 22, and the groove excavation body drive device 22 is directly connected to the connecting plate 5.
It can be connected to 0.

Further, in this excavator, as shown in FIGS. 3 and 4, a swing drive device 70 for swinging the coupling member 35 is provided.

Specifically, a mounting plate 72 is fixed to a portion of the elevating drive shaft 34 immediately below the lower flange portion 52, and a cylinder 74 is rotated by a pin 73 on the mounting plate 72. The arc-shaped link 76 is rotatably connected via a pin 75. The other end of the link 76 is rotatably connected to one end of an arc-shaped link 78 via a pin 77, and the other end of the link 78 is pinned to a bracket 48 a protruding from the outer peripheral surface of the outer fitting portion 48. It is rotatably connected via 79.

The rod end of the cylinder 74 is rotatably connected to a substantially middle portion of the link 76 via a pin 71.
When 6 rotates, the links 76 and 78 are switched between the contracted state shown by the solid line in FIG. 3 and the extended state shown by the chain double-dashed line in FIG.
The respective members are arranged so that the connecting member 35 turns by approximately 90 ° as the links 76, 78 expand and contract. Specifically, the pivot position where the connecting plate 50 projects forward (see FIG. 3).
The connecting member 35 is adapted to rotate between a solid line position) and a laterally escaping position (two-dot chain line position in FIG. 3).

As shown in FIG. 1, a pair of upper and lower rod holding devices 80 for holding the rod 36 are provided on the side of the reader 16. The specific structure is shown in FIGS.

A horizontal support plate 8 is provided on the outer peripheral surface of the leader 16.
1 is fixed, and an arcuate notch 81a having a diameter larger than that of the rod 36 is formed on the support plate 81 in a direction that opens forward (to the left in FIG. 6). On this support plate 81, a pair of left and right pin insertion blocks 82 are provided upright at the edge of the arcuate notch 81a.
Pin insertion holes 82a are formed in the No. 2 at positions matching each other.

The support plate 81 has a pin 83 in the vertical direction.
A central portion of the lever 84 is attached so as to be rotatable via the. One end of the pin 86 is rotatably connected to one end of the lever 84 via a pin 85, and the other end is inserted into the pin insertion hole 82 a of the pin insertion block 82.
A head side end of a cylinder 88 is rotatably mounted on the same support plate 81 via a pin 87, and a rod end of the cylinder 88 is rotatably mounted on the same support plate 81 via a pin 89. It is connected to the end.

On the other hand, on the outer peripheral surface of the rod 36, a pin penetrating portion 41 that can be inserted between the pin inserting blocks 82 is provided in a protruding manner, and the pin penetrating portion 41 has the pin penetrating portion 41 on both pin inserting blocks. The pin insertion hole 4 that matches the pin insertion holes 82a of both the pin insertion blocks 82 when inserted between the two 82.
1a is pierced.

When the cylinder 88 expands and contracts in this state, the lever 84 rotates in accordance with the expansion and contraction, and the pin 86 rotates in accordance with the rotation of the lever 84.
Is inserted only in the pin insertion hole 82a on the front side (the upper side in FIGS. 6A and 6B) (the solid line position in the figure) and the position that penetrates both the pin insertion holes 82a and the pin insertion hole 41a (the same). Each member is arranged so as to move between the position (shown by the two-dot chain line in the figure).

Next, the procedure for penetrating the trench excavation body by this apparatus will be described with reference to FIGS.

1) Grooving body drive device 22 for the leader 16
(FIG. 7) First, before attaching the groove excavation body drive device 22 to the leader 16, the engaging member 35 is preliminarily projected forward with the elevating drive shaft 34 extended to some extent. The position (the solid line position in FIGS. 3 and 4) is retracted in the turning direction from the position (the position indicated by the chain double-dashed line in FIG. 3) protruding laterally. In particular,
The cylinder 74 shown in FIG. 3 may be extended from the contracted state shown by the solid line in the figure. By the extension of the cylinder 74, the link 76 moves in a direction in which both the links 76 and 78 extend while rotating in a direction approaching the elevating and lowering drive shaft 34, and finally, as shown by the two-dot chain line in FIG. It extends in an arc shape along the outer peripheral surface of the drive shaft 34. As a result, the above link 78
The connecting member 35 connected to the above-mentioned structure pivots approximately 90 ° from the position where the connecting plate 50 projects forward (the position indicated by the solid line in FIG. 3) to the position where it projects laterally (the position indicated by the chain double-dashed line in FIG. 3).

In this state, as shown by the chain double-dashed line in FIG.
The groove excavation body drive device 22 with the upper excavation frame 23 is hung with a wire 90 by a crane (not shown), and the leader 16
It is attached to the rail 20 (see FIGS. 1 and 2). At this time, as described above, since the connecting member 35 is retracted in the direction of projecting to the side, not to the front side, there is no interference between the connecting member 35 and the wire 90 as in the conventional case, and the mounting work is performed. It can be done smoothly.

After mounting, the connecting member 35 is rotated in the opposite direction to the above.
And the lowering drive shaft 34 is lowered to connect the connecting plate 50 of the connecting member 35 and the cylindrical portion 53 at the upper end of the rod 36 via the pin 54, and the lower end of the rod 36 is connected to the groove excavation body driving device. 22 is connected to the upper end. That is, the coupling member 35 and the groove excavation body drive device 22 are connected via the rod 36. As a result, the state shown in FIG. 7 is obtained.

2) Lifting and fixing of the trench excavation body driving device 22 (FIG. 8) The lifting drive shaft 34 is raised from the above state. Since the ditch excavation body drive device 22 is also connected to the elevating drive shaft 34 via the coupling member 35 and the rod 36, the groove excavation body drive device 22 and the upper excavation frame 23 also rise along the rail 20. To do. Then, when these reach the uppermost position shown in FIG. 8, the groove excavation body drive device 22 is fixed so as not to be lowered by using a means such as a pin or a bolt.

3) Removal and holding of the rod 36 (FIG. 9) From the above state, the lower end of the rod 36 and the groove excavation body driving device 22
Are separated from each other, and the elevating drive shaft 34 is slightly elevated from this position. Then, the turning drive device 70 shown in FIG. 3 is operated to turn the coupling member 35 from the solid line position in the figure to the two-dot chain line position, and then the lifting drive shaft 34 is lowered. As a result, the rod 36 is moved to the position shown by the solid line in FIG.
That is, the pin penetrating portion 41 projecting from the rod 36 reaches a position where it is inserted between both the pin insertion blocks 82 in each of the upper and lower rod holding devices 80. At this position, the cylinder 88 is extended from the contracted state and the pin 86 is moved to the position shown in FIG.
(B) is moved from the solid line position to the two-dot chain line position (that is, the pin 86 is the pin insertion hole 41a of the pin penetration portion 41).
To insert. ). As a result, the upper and lower parts of the rod 36 are held by the rod holding device 80 on the sides of the reader 16.

After that, the connecting member 35 is swung again toward the position indicated by the solid line in FIG. At this position, the connecting plate 5 of the connecting member 35
0 is directly connected to the upper end portion of the trench excavation body drive device 22 via the pin 54 (state of FIG. 9).

4) Pulling up and retracting the groove excavation body drive device 22 (FIG. 10) By raising the elevating drive shaft 34 from the state shown in FIG. 9, the groove excavation body drive device 22 is pulled out upward from the rail 20 and the state shown in FIG. To the state of. Further, from this state, the turning drive device 70 is operated to turn the coupling member 35 from the solid line position in FIG. 3 to the two-dot chain line position. Since the groove excavation body drive device 22 is connected to the coupling member 35,
This groove excavation body drive device 22 also turns, and is withdrawn in the turning direction from the space above the rail 20.

5) Connection of the excavation frame main body 24 and penetration of the groove excavation body (FIGS. 11 and 12) As shown by the chain double-dashed line in FIG. 11, with the groove excavation body driving device 22 retracted as described above. The long (in this embodiment, the vertical length which is almost twice the lifting stroke of the lifting drive shaft 34 in the vertical direction) is carried by the wire 90 to a position immediately in front of the leader 16 while being suspended by the wire 90. The excavation frame main body 24 is held upright by the groove excavation body holding device 46 of the base machine 10. The excavation frame main body 24 may be integrally formed as a whole, or may be a long body formed by assembling a plurality of vertically divided units.

Also here, when the digging frame main body 24 is carried in, the coupling member 35 and the groove digging body driving device 22 are swung and retracted to the position on the side of the leader 16, so that they interfere with the wire 90. It is possible to smoothly suspend the excavation frame main body 24 without doing so.

Thereafter, the turning drive device 70 is operated to return the connecting member 35 and the groove excavation body drive device 22 to the position in front of the reader 16. From this state, the elevation drive shaft 34 and the groove excavation body drive device 22 are lowered, and the upper excavation frame 23 thereof is
The upper end of the excavation frame body 24 is connected to. After that, the holding of the excavation frame body 24 is released, and
To the state of.

In this state, the chain 30 is stretched between the two sprockets 26 and 28, and then the groove excavation body drive device 22 is operated to drive the chain 30 and lower the elevating drive shaft 34, thereby making it possible to obtain the structure shown in FIG. The trench excavation body can penetrate into the ground as shown in.

6) Penetration by adding rod 36 (Fig. 1)
3 and 14) After the penetration is performed for the descending stroke of the elevating and lowering drive shaft 34, the connecting member 35 and the upper end of the trench excavation body driving device 22 are separated, the connecting member 35 and the elevating and lowering drive shaft 34 are slightly raised, and the turning is performed. The drive device 70 is operated to rotate the coupling member 35 from the solid line position in FIG. 3 to the two-dot chain line position. After turning
The connecting member 35 and the elevation drive shaft 34 are lowered to connect the cylindrical portion 53 at the upper end of the rod 36 to the connecting plate 50 of the connecting member 35 via the pin 54. After this connection, the cylinder 88 of each rod holding device 80 is contracted to move the pin 86 to the rod 36.
Is pulled out from the pin insertion hole 41a of the pin penetration portion 41 in FIG.
After releasing the holding of the rod 36 in this way, the elevating drive shaft 34 and the connecting member 35 are raised again, and the turning drive device 70 returns from the two-dot chain line position in FIG. 3 to the solid line position.
The lower end of the rod 36 is connected to the upper end of the groove excavation body drive device 22 (state of FIG. 13).

From this state, the chain excavator driving device 22 drives the chain 30 again to lower the elevating and lowering drive shaft 34 and the connecting member 35, so that the groove excavator is further deepened (the elevating and lowering drive shaft) as shown in FIG. It is possible to penetrate into the ground (at a depth greater than the lifting stroke of 34).

After the penetration, the groove excavating body holding device 46 holds the predetermined portion of the excavating frame 24 while the groove excavating body is being driven, and the base machine 10 is caused to travel, whereby the groove is excavated along the traveling direction. Can be drilled.

Next, a second embodiment will be described with reference to FIGS.

In the first embodiment, when the groove excavation body driving device 22 is completely pulled out upward from the rod-shaped rail 20 of the leader 16 as shown in FIG. It is free from and is not bound at all. Therefore, as shown in FIG. 11, when the main body frame 24 of the groove excavation body is connected to the groove excavation body drive device 22 and penetrates from this state, the upper end portions of the groove excavation body drive device 22 and the main body frame 24 are in the horizontal direction. Easy to wander,
In particular, when the trench excavation body hits hard geology or an underground obstacle, it becomes difficult for the trench excavation body to escape in the front-rear direction or the left-right direction and to keep the intrusion direction of the trench excavation body vertical.

Therefore, in this embodiment, the main body frame 24 and the leader 16 are connected to each other through the excavation body restraining member, and even when the groove excavation body driving device 22 is above the leader 16, the main body frame for the trench excavation body is provided. 24 is bound to the leader 16 side.

The excavation body restraining member is composed of a fixed restraining member 92 and a lifting restraining member 94 as shown in FIG. The fixed restraint member 92 extends over substantially the entire length of the main body frame 24, is fixed to the back surface of the main body frame 24 by means such as welding or bolts, and ridges 92a are formed on the left and right of the front end surface. The lifting restraint member 94 is formed by connecting a frame side member 95 close to the main body frame 24 side and a pair of left and right leader side members 96 close to the reader 16 side, and the frame side member 95 has the ridge. A groove 95a into which 92a can be fitted in the vertical direction is formed,
At the tip of the leader-side member 96, a sliding portion 96a having a shape that holds the rod-shaped rail 20 from both outsides is formed. Therefore, the leader side member 96 has the sliding portion 96a.
Can be moved up and down with respect to the rod-shaped rail 20 while sliding on the rod-shaped rail 20, and the reader-side member 96 and the frame-side member 95 are relatively movable in the up-and-down direction and in the same direction. It is designed so that it can be inserted and removed.

On the other hand, a hydraulic winch 1 is attached to the upper swing body 14.
5, the wire 98 pulled out from the winch drum 15a is hooked on the sheave 31 provided on the upper part of the upper excavating frame 23, and the wire 98
Is fixed to the lifting restraint member 94, and the lifting restraint member 94 is driven up and down by winding and unwinding the wire 98 by the hydraulic winch 15. Further, a stopper 99 is fixed to the lower end of the reader 16, and the abutment of the stopper 99 with the elevating / lowering restraining member 94 prevents the elevating / lowering restraining member 94 from falling below the position where the stopper 99 is disposed. It is supposed to be done.

According to such a device, as shown in FIG. 10 in the first embodiment, the groove excavation body driving device 2 is used.
2 is above the leader 16, the elevating restraint member 94 is lowered to the position of the substantially lowermost end, and from this state, the main body frame 24 of the groove excavation body is moved to the groove excavation body driving device as shown in FIG. After connecting to the upper excavation frame 23 on the 22 side, the lifting drive member 94 is raised by winding the wire of the hydraulic winch 15, and the protrusion 92a of the fixed restraint member 92 on the main body frame 24 side is fitted into the groove 95a thereof. By pulling up the elevating and lowering drive member 94 to the position of the substantially uppermost end, as shown in FIG.
The upper part of the can be restrained to the reader 16 side through the fixed restraining member 92 and the elevating and lowering driving member 94. Therefore,
Even if the groove excavation body drive device 22 is free from the leader 16 in this state, the upper part of the main body frame 24 does not wobble when the groove excavation body penetrates, and the groove excavation body accurately penetrates vertically. You can

At the time of this penetration, the trench excavation body drive device 22 gradually descends, and along with this, the hydraulic winch 1
By performing the wire unwinding operation by 5 and appropriately lowering the lifting restraint member 94, it is possible to avoid the interference between the lifting restraint member 94 and the trench excavation body drive device 22. Further, even if the wire 98 is unwound excessively, the lifting restraint member 94 is prevented from falling due to this, so that there is no possibility that the lift restraint member 94 will accidentally fall out of the rod-shaped rail 20. Can safely lower the lifting restraint member 94.

In the excavation body restraint member according to the sixth aspect of the present invention, for example, the fixed restraint member 92 and the lifting restraint member 94 are integrated so that both members 92, 94 are fixed to the main body frame 24 side. It may be
However, in this case, since the whole excavation body restraining member becomes relatively large, the excavation body restraining member cannot penetrate into the ground together with the trench excavation body, and therefore the trench excavation body completely penetrates. Although there is an inconvenience to remove the excavation body restraint member from the main body frame 24 of the groove excavation body before,
As in the above embodiment, the excavation body restraint member is fixed to the restraint member 92.
If it is configured to be separable into the lifting restraint member 94 and the lifting restraint member 94, the lifting restraint member 94 is left on the side of the leader 16 and only the relatively small fixed restraint member 92 is penetrated into the ground together with the trench excavation body. There is an advantage that the workability can be further improved by eliminating the work of removing the excavation body restraining member from the main body frame of the groove excavation body.

Further, the present invention is not limited to the above-mentioned embodiments, but the following modes can be adopted as examples.

(1) In the first embodiment, the device for penetrating the groove excavation body for excavating the groove is shown, but the present invention is not limited to this, and the excavation as shown in FIGS. It can also be applied to a device that penetrates into the ground while rotating the shaft. The second embodiment can also be applied to the excavation shaft that penetrates into the ground while rotating, instead of the groove excavation body,
In this case, a bearing that rotatably holds the excavation shaft may be provided on the outer periphery of the excavation shaft, and the bearing may be constrained to the leader 16 side via the excavation body constraining member. However, when using the trench excavation body as shown in the above embodiment,
In order to perform the replenishment, first, both sprockets 26, 28
Remove the chain 30 from the top and bottom of the excavation frame 2
A new frame unit is inserted between 3 and 24, and the chain 3 is added as much as this frame is added.
0 has to be added, and after that, the chain 30 has to be rewound over the sprockets 26 and 28 again, which is extremely troublesome work. Therefore, such addition of the groove excavation body can be omitted or added. The effect of reducing the number of times becomes more remarkable.

(2) In the above embodiment, the rod 36 is temporarily held on the side of the leader 16, but the rod 36 may be held by a holding device separately installed. However, as in the above embodiment, the rod holding device 8 that holds the rod 36 in the upright state on the side portion of the leader 16 is provided.
If 0 is provided, the rod 36 and the groove excavation body driving device 2 are connected to the rod 36 only by turning and raising / lowering the connecting member 35.
There is an advantage that it can be interposed between the two.

(3) In the inventions according to claims 2 and 4, it is sufficient that at least the connecting portion pivots with respect to the elevating and lowering support member such as the reader 16. For example, the entire elevating and lowering member is pivoted with respect to the elevating and lowering support member. You may However, as in the above embodiment, if only the connecting member 35 is swung without turning the lifting drive shaft 34, the driving energy required for this turning can be reduced and the turning drive device 70 can be made smaller. There is an advantage that can be.

(4) In the present invention, regardless of the specific structure of the swivel drive means, for example, a gear is fixed to a swivelable portion of the elevating member, and the gear meshing with this gear is connected to a rotary drive source such as a motor. Even if both gears are driven to rotate, the swivelable portion can be swung.

(5) In the second embodiment, the fixed restraint member 9
The vertical dimension of 2 and the position of fixing to the body frame 24 may be appropriately set within a range in which the groove excavation body can be restricted to the leader 16 side by the fixed restricting member 92 and the elevating restricting member 94.
Further, the shapes of the fixed restraint member 92 and the elevating restraint member 94 may be freely set within a range in which both the restraint members 92, 94 can be engaged and disengaged only in the ascending / descending direction and can be relatively elevated in the engaged state. .

[0078]

As described above, according to the present invention, after the excavation body is once penetrated by lowering the elevating member in a state where the excavation body drive device and the coupling member are directly connected, the excavation body drive device and the coupling member are connected. Since the connecting member is interposed between them, the elevating member is lowered again to penetrate, so that it is possible to penetrate the excavated body without adding the excavated body without increasing the elevating stroke of the elevating member. The depth can be increased. Therefore, it is possible to eliminate the need for additional penetration of the excavated body or to reduce the number of times of addition, thereby shortening the construction cycle time.

In particular, in the method and apparatus according to the third and fifth aspects, as the excavation body, a groove excavation body is used in which an endless body having a cutting blade on its surface is hung between upper and lower rotating bodies. Since it takes a lot of time and effort to add the groove excavation body, it is possible to further shorten the construction cycle time by eliminating the need to add the groove excavation body or by reducing the required number of times. it can.

Further, in the method according to the second aspect and the apparatus according to the fourth aspect, the connecting member is preliminarily placed on the elevating and lowering support member at a position different from the supporting portion of the excavation body driving device in the circumferential direction. Since the digging body driving device and the coupling member are directly connected to each other, the digging body driving device is directly connected to the digging body driving device after the digging body is pierced, and the coupling member is simply swung and lifted. There is an effect that the connecting member can be interposed between the connecting member and the connecting member.

In the apparatus according to any of claims 4 and 5, further according to the apparatus according to claim 6, the excavation body restraining member engaged with the lifting support member restrains the excavation body on the side of the lifting support member. Therefore, there is an effect that it is possible to prevent the excavated body from wobbling and the penetration direction thereof is deviated, so that the excavated body can be penetrated with higher accuracy.
Moreover, since the excavation body restraining member can be moved up and down with respect to the elevation support member, it does not hinder the penetration of the excavation body.

Further, in the apparatus according to the seventh aspect, the excavation body restraint member is separated into a fixed restraint member on the excavation body side and an elevation restraint member on the elevation support member side, and the elevator restraint member is left and fixed relatively small. Since only the restraint member is allowed to penetrate into the ground together with the excavated body, it is possible to save the labor of removing the whole excavated body restraint member from the excavated body at the time of penetration and to further improve workability. Further, by appropriately lowering the elevation restraint member as the excavation body drive device descends, it is possible to avoid interference between the elevation restraint member and the excavation body drive device.

Here, in the apparatus according to the eighth aspect, the elevating and lowering restraint member can be moved up and down only by the winding and unwinding operations of the wire by the winch, and the arrangement is achieved by the stopper provided on the elevating and lowering support member. By preventing the lifting / lowering restraint member from falling below the position, it is possible to reliably prevent the lifting / lowering restraint member from accidentally falling off the lifting / lowering support member due to excessive unwinding of the wire by the winch. The lifting restraint member can be lowered with confidence.

[Brief description of drawings]

FIG. 1 is an overall front view of an excavating device according to a first embodiment of the present invention.

FIG. 2 is an overall side view of the excavator.

FIG. 3 is a plan view of the excavator.

FIG. 4 is a partial cross-sectional front view of an upper end portion of the excavation device.

5 is a sectional view taken along line BB of FIG.

6A is a sectional view taken along the line AA of FIG. 1, and FIG. 6B is a partially enlarged view of FIG.

FIG. 7 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 8 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 9 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 10 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 11 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 12 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 13 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 14 is a schematic front view showing a procedure for penetrating a trench excavation body by the excavation device.

FIG. 15 is an overall front view of an excavating device according to a second embodiment of the present invention.

FIG. 16 is a cross-sectional plan view showing a main part of the excavation device.

FIG. 17 is a schematic front view showing a state in which the excavation body restraining member restrains the trench excavation body in the excavation device.

FIG. 18 is a schematic front view showing a procedure for penetrating an excavating shaft by a conventional excavating device.

FIG. 19 is a schematic front view showing a procedure for penetrating an excavating shaft by a conventional excavating device.

FIG. 20 is a schematic front view showing a procedure for penetrating an excavating shaft by a conventional excavating device.

FIG. 21 is a schematic front view showing a procedure for penetrating an excavating shaft by a conventional excavating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base machine 15 Hydraulic winch 16 Leader (elevation support member) 22 Groove excavator drive device 24 Body frame 25, 26 Sprocket (rotary body) 30 Excavation chain (endless body) 34 Elevation drive shaft (elevation member) 35 Coupling member ( Coupling part) 36 Rod (coupling member) 70 Turning drive device 80 Rod holding device (coupling member holding means) 92 Fixed restraining member 94 Elevating restraining member 98 Wire 99 Stopper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiharu Nishijima 740 Yagi, Okubo Town, Akashi City, Hyogo Prefecture Kobe Steel Co., Ltd. Okubo Construction Machinery Factory

Claims (8)

[Claims] 1. An excavation body driving device that holds an excavation body and drives it, an elevating support member that supports the excavation body drive device so that the excavation body drive device can move up and down, and the excavation body is installed on the elevating support member so as to be able to move up and down. A method for penetrating an excavation body by an excavation device, comprising an elevating member that is integrally elevated with a body driving device when the excavation body driving device is directly connected to the elevating member. While holding and driving the excavated body by the device, the elevating member and the excavated body driving device are lowered to penetrate the excavated body into the ground, and then the elevating member and the excavated body driving device are separated to raise the elevating member. An excavator which further penetrates into the ground by interposing a vertically extending connecting member between the elevating member and the excavator driving device and then lowering the elevating member again. By How to penetrate the excavated body. 2. The method for penetrating an excavation body by an excavation device according to claim 1, wherein a coupling portion coupled to the excavation body driving device is projected at an upper end of the elevating member in a substantially horizontal direction, and excavation is performed at the coupling portion. Before penetrating the excavation body in a state where the body drive device is directly connected, the connecting member is preliminarily held in the upright state at a position different in the circumferential direction from a position at which the excavation body is supported to be able to move up and down in the lifting support member. Every other, after penetrating the excavation body, at least the connecting portion in the elevating member is rotated with respect to the elevating support member, and the upper end of the connecting member held by the elevating support member is connected to this connecting portion,
After that, the elevating member is raised, and at least the connecting part of the elevating member is pivoted together with the connecting member with respect to the elevating and lowering supporting member, the lower end of the connecting member is connected to the excavation body driving device, and the elevating member is lifted again from this state. A method for penetrating an excavated body by an excavating device, characterized in that the excavated body is further penetrated into the ground by lowering a member. 3. A method for penetrating a drilling body by a drilling apparatus according to claim 1, wherein the drilling body is an endless body having a drilling blade on its surface, and the groove is drilled between upper and lower rotating bodies. A method for penetrating an excavated body by an excavator, characterized in that the lifting support member is installed on a traveling machine that travels on the ground using a body. 4. An excavation body drive device that holds an excavation body and drives it, an elevating support member that supports the excavation body drive device so that the excavation body drive device can move up and down, and an upper end of the elevating support member that is vertically movable. And an elevating member in which a coupling portion coupled to the excavation body drive device is provided so as to project in a substantially horizontal direction, and while holding and driving the excavation body by the excavation body drive device, these are integrated with the elevating member. In an excavation device configured to penetrate into the ground by lowering the excavated body, at least the connecting portion of the elevating member is configured to be rotatable with respect to the elevating support member, and the swivelable portion is A swivel driving unit that swivels with respect to the elevating and lowering support member, a connecting member that can be interposed between the excavation body driving device and the coupling portion, and the excavation body that can be elevated and lowered by the elevating and lowering support member. An excavator which is provided at a position different from the held position in the circumferential direction and has a connecting member holding means for switching between a state of holding the connecting member in an upright state and a state of releasing it. 5. The excavation device according to claim 4, wherein the excavation body includes a groove excavation body formed by hanging an endless body having an excavation blade on a surface between upper and lower rotating bodies.
An excavator characterized in that the elevating support member is installed on a traveling machine that travels on the ground. 6. The excavating device according to claim 4, further comprising an excavation body restraining member that connects the elevation support member and the excavation body in a state of being engaged with the elevation support member in a vertically movable manner. A drilling device characterized by. 7. The excavation device according to claim 6, wherein the excavation body restraint member is an up-and-down restraint member that is engaged with the up-and-down support member side so as to be able to move up and down, and the up-and-down restraint member fixed to the excavator body side. With respect to the fixed restraint member that can be engaged and disengaged only in the ascending / descending direction, and configured such that the raising and lowering restraint member and the fixed restraint member can be relatively moved up and down in a state in which both are engaged, An excavating device comprising a restraint member driving means for vertically moving the elevator restraint member. 8. The excavating device according to claim 7, wherein the restraint member driving means includes a winch for winding and unwinding a wire connected to the lift restraint member, and a winch for lowering the lift support member. An excavator which is provided with a stopper for preventing the elevation restraining member from being lowered below the installation position.