JP2908738B2 - Sheet pile press-in / draw-out device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet pile press-in / draw-out apparatus.

[0002]

2. Description of the Related Art When burying a pipe extending in a direction transverse to the surface of the ground, such as a water pipe, a gas pipe, and a telephone line insertion pipe, a groove for burying the pipe is required. Prior to excavation, a sheet pile driving operation for driving a sheet pile for earth retaining during trench excavation into the ground so as to be continuously arranged on both sides of a trench to be excavated is performed.

FIG. 8 shows an example of a conventional sheet pile driving operation, in which 1 is a steel sheet pile, 2 is a vibro hammer, and 3 is a mobile crane.

A vibratory hammer 2 is provided with a gripping mechanism 4 capable of gripping one end of a steel sheet pile 1 to be an upper end when driven into the ground, and a gripping mechanism 4 provided on the gripping mechanism 4.
A vibration generating mechanism 5 for applying vibration to the steel sheet pile 1 via a suspension rod 6a and a buffer spring 6b
And an engagement portion 7 connected via the.

The gripping mechanism 4 includes a fixed claw 4a protruding downward, a moving claw 4b protruding downward and capable of approaching and separating from the fixed claw 4a, and the moving claw 4b being connected to the fixed claw 4a. Cylinder 4c for moving closer to or away from
When the fluid pressure is applied to the head-side fluid chamber of the gripping cylinder 4c, the moving claw 4b approaches the fixed claw 4a, and the fluid pressure is applied to the rod-side fluid chamber of the gripping cylinder 4c. Then, the movable claw 4b is separated from the fixed claw 4a.

The vibrating mechanism 5 includes a pair of eccentric weights 5a.
And an exciting motor 5b for rotating the eccentric weight 5a in the opposite phase. When the exciting motor 5b is operated, the eccentric weight 5a is rotated and the gripping mechanism 4 is rotated.
Vibration is transmitted to.

The mobile crane 3 includes a lower traveling body 9 having a pair of left and right endless crawler shoes 8, an upper revolving body 10 rotatably provided above the lower traveling body 9, and an upper revolving body 10 A boom 11 having a telescopic structure whose base end is pivotally supported, and a boom raising / lowering cylinder 12 for raising / lowering the boom 11.

[0008] The body of the boom hoisting cylinder 12 is
The boom-lifting cylinder 1 is pivotally supported via a pin 14 on a bracket 13 provided at the front end of the upper rotating body 10.
The second piston rod 12a is pivotally supported via a pin 16 to a bracket 15 provided on the boom 11;
When a fluid pressure is applied to the head-side fluid chamber or the rod-side fluid chamber of the boom raising / lowering cylinder 12, the boom 11 is raised and lowered with respect to the upper rotating body 10.

Further, a cab 17 and a winch drum (not shown) are mounted on the upper swing body 10.

The portion of the wire rope 18 wound around the winch drum near the payout side end is connected to the boom 1.
1 is hanged down through sheaves 11a and 11b pivotally supported at the tip end of the hook block 19 and wound around the sheave 19a of the hook block 19, and the leading end portion is locked to the tip end of the boom 11. When the wire rope 18 is rotated in the winding direction or in the unwinding direction, the hook block 19 moves up and down with respect to the boom 11.

When the steel sheet pile 1 for earth retaining is driven into the ground by using the vibratory hammer 2 and the mobile crane 3, the engaging portion 7 is engaged with the hook 19 b of the hook block 19, so that the mobile crane can be driven. The vibratory hammer 2 is suspended from the tip of the third boom 11.

Next, one end of the steel sheet pile 1 which should become the upper end when driven into the ground is gripped by the fixed claw 4a and the movable claw 4b of the gripping mechanism 4, and the other end (lower end) of the steel sheet pile 1 is grounded. The movable crane 3 is appropriately operated so that the steel sheet pile 1 is brought into contact with the position where the steel sheet pile 1 is to be driven and the steel sheet pile 1 is substantially vertical.

In this state, the winch drum is rotated so that the wire rope 18 is slightly unreeled so that the weight of the steel sheet pile 1 and the vibro-hammer 2 is added to the ground surface 20 and the vibration motor of the vibration mechanism 5 is driven. When the eccentric weight 5a is rotated by operating the eccentric weight 5b,
Vibration generated by the rotation of a is transmitted to the steel sheet pile 1 via the gripping mechanism 4, and the steel sheet pile 1 is driven into the ground by its own weight and the weight and vibration of the vibratory hammer 2.

On the other hand, when pulling out the steel sheet pile 1 from the ground, the upper end of the steel sheet pile 1 driven into the ground is gripped by the gripping mechanism 4 of the vibro hammer 2.

In this state, when the winch drum is rotated so that the wire rope 18 is wound up while applying vibration to the steel sheet pile 1 by the vibrating mechanism 5, the hook block 19
At the same time, the vibratory hammer 2 rises, whereby the steel sheet pile 1 is pulled out from the ground.

[0016]

However, when a vibration is applied to the steel sheet pile 1 by the vibratory hammer 2, noise is generated together with the vibration, which is not suitable for work in a residential area.

Further, when the steel sheet pile 1 is driven into the ground, it is difficult to drive the steel sheet pile 1 simply by applying vibration to the steel sheet pile 1 by the vibratory hammer 2 due to the state of the soil in the ground. Sometimes.

The present invention has been made in view of the above circumstances, and can suppress the generation of noise during work.
It is another object of the present invention to provide a sheet pile press-in / draw-out apparatus capable of efficiently performing a sheet pile driving operation without affecting the state of earth and sand in the ground.

[0019]

In order to achieve the above object, a sheet pile press-in / draw-out apparatus according to claim 1 of the present invention comprises:
From the top edge to the bottom edge of the front part of the hollow structure extending vertically
Lower reader 21 formed with notch 21a extending to the vicinity
When the connecting bracket 4 which is fixed to the lower reader 21
8, 49 and the lower reader 21 can be moved up and down.
The inserted upper reader 22, a first press-fitting / pulling-out actuator 24 for raising and lowering the upper reader 22 with respect to the lower reader 21, and extending vertically and extending downward from the notch 21a.
To the upper reader 22 so as to protrude outside the
The fixed guide member 27 is fixed to the fixed guide member 27.
Steel arrow to be fitted up and down and pulled out from the ground
A movement guide member 28 to which the plate 1 can be connected;
Drive actuator 31 for rotating an auger screw 29 connected to the material 28 and extending in the vertical direction
Surrounding the auger screw 29 in the circumferential direction and
The upper end is attached to the auger drive actuator 31
The press-fitting cylinder 30 and the main body part
Connected to the moving guide member 28
A second press-fitting / pulling-out actuator 33 connected to
Sheet pile press-fitting members mounted on the front, left and right side surfaces of the press-fitting cylinder 30 so that when the steel sheet pile 1 to be driven into the ground is disposed along the press-fitting cylinder 30, it can contact the upper end of the steel sheet pile 1. 40.

In the sheet pile press-in / draw-out apparatus according to the second aspect of the present invention, in addition to the configuration of the sheet pile press-in / withdrawal apparatus according to the first aspect of the present invention, one end has an existing structure or heavy object. Force holding actuator 45 connectable to the actuator
Is connected to the lower reader 21.

Further, in the sheet pile press-in / draw-out apparatus according to the third aspect of the present invention, in addition to the configuration of the sheet pile press-in / withdrawal apparatus according to the first or second aspect of the present invention, a press-fitting cylinder 30 is provided. Are formed in a rectangular shape.

In any of the sheet pile press-in / draw-out devices according to the first to third aspects of the present invention, the upper leader 22 is lowered with respect to the lower leader 21 by the first press-in / pull-out actuator 24, and the second The auger screw 29 and the press-fitting cylinder 30 are lowered with respect to the upper leader 22 by the press-fitting / pulling-out actuator 33, and the sheet pile press-fitting member 40 in which the steel sheet pile 1 arranged along the press-fitting cylinder 30 is mounted on the press-fitting cylinder 30. By driving into the ground.

A second press-fitting / pulling-out actuator 33 is connected to the steel sheet pile 1 to be pulled out from the ground, and the second press-fitting / pulling-out actuator 33 raises the steel sheet pile 1 with respect to the upper leader 22. The upper reader 2 is moved with respect to the lower reader 21 by the press-fitting / pulling-out actuator 24.
2 and pull out the steel sheet pile 1 from the ground.

In the sheet pile press-in / draw-out apparatus according to the second aspect of the present invention, when the resistance acting on the steel sheet pile 1 driven into the ground is large, the reaction force holding actuator 45 can be attached to an existing structure or heavy object. In connection, the driving of the steel sheet pile 1 is promoted.

Further, in the sheet pile press-in / draw-out apparatus according to the third aspect of the present invention, the steel sheet pile 1 to be driven into the ground is formed by making the cross-sectional shape of the press-fitting cylinder 30 rectangular.
Make it easy to follow 0.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 7 show an embodiment of a sheet pile press-in / draw-out apparatus according to the present invention.

Reference numeral 21 denotes a lower reader.
Reference numeral 1 denotes a notch 21a (see FIG. 3 ) formed in a front portion of a hollow structure extending vertically and having a rectangular cross section and extending from an upper edge of the front portion to a vicinity of a lower end.

Reference numeral 22 denotes an upper reader.
Reference numeral 2 denotes a hollow structure extending vertically and having a rectangular cross section smaller than that of the lower leader 21, and is inserted into the lower leader 21 so as to be movable in the vertical direction.

A liner 23 is provided at a predetermined position on the outer surface of the upper reader 22 so as to prevent the upper reader 22 from swinging back and forth and left and right with respect to the lower reader 21.
Are mounted so as to slide along the inner side surface of the lower reader 21.

A liner 23 for preventing the upper reader 22 from swinging in the front-rear direction and the left-right direction with respect to the lower reader 21 is provided at a predetermined location on the inner side surface of the lower reader 21.
(See FIGS. 2 and 3) are slidably mounted along the outer surface of the upper reader 22.

The liner 23 as the steadying means for the upper reader 22 is not limited to being attached to the lower reader 21 as described above. It may be mounted so that it can slide along the inner surface.

Further, the cross-sectional shapes of the lower reader 21 and the upper reader 22 are not necessarily limited to rectangles.
Assuming that a spline mechanism for preventing the lower leader 21 and the upper leader 22 from mutually displacing in the circumferential direction is applied, the cross-sectional shape of the lower leader 21 and the upper reader 22 can be circular.

Numeral 24 denotes a first press-in / pull-out actuator composed of a fluid pressure operated cylinder. (See FIGS. 1 to 3).

The first press-fitting / pulling-out actuator 24
Is connected to the vicinity of the lower end of the lower reader 21 by a pin 25, and the first press-fitting / pulling-out actuator 2
The fourth piston rod 24a is connected to the vicinity of the upper end of the upper leader 22 by a pin 26. When fluid pressure is applied to the head-side fluid chamber of the first press-fitting / pulling-out actuator 24, the piston rod 24a moves forward. , The upper reader 22 rises with respect to the lower reader 21 and
When the fluid pressure is applied to the rod-side fluid chamber of the press-fitting / pulling-out actuator 24, the upper leader 22 descends with respect to the lower leader 21 with the retraction of the piston rod 24a.

A first press-fitting / pulling-out actuator 24 as a means for elevating the upper reader 22 with respect to the lower reader 21
Is not limited to a fluid pressure operated cylinder, and a screw jack may be used instead of the cylinder.

Reference numeral 27 denotes a fixed guide member extending in the vertical direction. The fixed guide member 27 extends from the middle in the vertical direction to the lower edge of the front portion of the upper leader 22 from the notch 21.
a so as to protrude outward from the lower reader 21 from a.

The fixed guide member 27 is connected to the upper reader 22.
Left and right departure preventing portions 27a, 27a each comprising a pair of square bars fixed in parallel to the front surface of the deflector, and deviating so that the distance between the departure preventing portions 27a, 27a is smaller than the interval between the departure preventing portions 27a, 27a. It is constituted by forward deviation prevention portions 27b, 27b formed of square bars fixed to the surfaces of the prevention portions 27a, 27a on the side opposite to the upper leader in parallel (see FIGS. 2 and 3).

Reference numeral 28 denotes a moving guide member, which is fitted to the fixed guide member 27 so as to be able to move in the vertical direction.

The movement guide member 28 is provided with
a, 27a, departure prevention units 27b, 27b, upper reader 2
The moving piece 28a is inserted into the space surrounded by the movable piece 2 so as to be able to move in the vertical direction, and is fixed to the moving piece 28a so as to protrude outward from the fixed guide member 27 from between the deviation preventing portions 27b, 27b. Support piece 28b, and the support piece 28b
And a pair of left and right connecting pieces 28c, 28c (see FIG. 3).

Reference numeral 29 denotes an auger screw extending in the vertical direction. The auger screw 29 is disposed in front of the lower leader 21 described above.

The total length of the auger screw 29 is formed longer than the total length of the lower leader 21.

Reference numeral 30 denotes a press-fitting cylinder. The press-fitting cylinder 30 is a hollow structure extending in the up-down direction and having a rectangular cross section. It is arranged so as to surround it (see FIGS. 1 and 2).

At a predetermined position of the press-fitting cylinder 30, an earth discharging port 30a for discharging earth and sand excavated by the auger screw 29 to the outside is opened.

The discharging port 30a may be opened not only at the upper end of the press-fitting cylinder 30 but also at an intermediate portion.

Reference numeral 31 denotes an auger drive actuator comprising a fluid pressure operation motor. The auger drive actuator 31 is mounted on the upper end of the press-fit cylinder 30 and has a drive shaft connected to the upper end of the auger screw 29. The auger screw 29 is rotated by the auger driving actuator 31.

The auger driving actuator 31 as a rotating means of the auger screw 29 is not limited to the fluid pressure motor, but may be an electric motor instead of the fluid pressure motor.

Further, the bracket 31a provided on the auger driving actuator 31 is connected to the connecting piece 28c constituting the moving guide member 28 by the pin 32.

A short cylindrical spacer 32a (see FIG. 3) is fitted on the pin 32 so as to be located between the connecting piece 28c and the bracket 31a.

Instead of the auger drive actuator 31, the pin 32 is connected to a sheet pile engaging member (not shown) formed of a hook via a connecting member (not shown) such as a chain. That can be done.

The sheet pile pulling engagement member is formed so as to fit into an engagement hole (not shown) opened at the upper end of the steel sheet pile 1.

Reference numeral 33 denotes a second press-in / pull-out actuator composed of a fluid pressure-operated cylinder. 22 is arranged on the front side.

The second press-fitting / pulling-out actuator 33
Is connected to a bracket 35 provided at the upper end of the upper leader 22 by a pin 34, and the piston rod 33a of the second press-fitting / pulling-out actuator 33 is connected by a pin 36 to the moving guide member 28 described above. Piece 28
When the fluid pressure is applied to the rod-side fluid chamber of the second press-fitting / pulling-out actuator 33, the auger screw 29 and the press-fitting cylinder 30 move together with the moving guide member 28 along with the movement guide member 28 as the piston rod 24a retreats. 22
When the fluid pressure is applied to the head-side fluid chamber of the second press-fitting / pulling-out actuator 33, the auger screw 29 and the press-fitting cylinder 30 move upward together with the moving guide member 28 with the advancement of the piston rod 24a. Reader 2
2 to fall.

The second press-fitting / pulling-out actuator 33 as means for raising and lowering the auger screw 29 and the press-fitting cylinder 30 with respect to the upper leader 22 is not limited to a cylinder operated by a fluid pressure system. May be applied.

Reference numeral 37 denotes a positioning arm, which is disposed on each of the left and right sides of the lower reader 21 described above.

The base end of the positioning arm 37 is supported by the lower reader 21 via a bolt 38 so as to be rotatable or fixed.

Also, at the tip of the positioning arm 37,
In a state in which the positioning arm 37 projects substantially forward of the lower reader 21, the positioning arm 37 contacts the front surface of the press-fitting cylinder 30 suspended from the moving guide member 28 and
A stopper 39 is mounted for suppressing the frontward movement of the zero.

Numeral 40 is a sheet pile press-in member. The sheet pile press-in member 40 is provided on the front and left sides of the press-fitting cylinder 30 described above so as to be able to contact the upper end of the steel sheet pile 1 to be driven into the ground. , Is mounted near the upper end of the right side surface, and can be detached from the press-fitting cylinder 30 as needed.

The sheet pile press-fitting member 40 is not limited to the plate shape as shown in the figure, but may be shaped so as to fit from above into the upper end of the steel sheet pile 1 to be driven into the ground. Good.

Reference numeral 41 denotes a connecting member made of a wire rope. The connecting member 41 has a winch drum 42 having a fluid pressure drive type driving mechanism (not shown) provided at the upper end of the above-described upper reader 22. Is wrapped around.

The connecting member 41 is not limited to the wire rope, and a chain may be used instead of the wire rope.

The driving mechanism of the winch drum 42 is
The invention is not limited to the fluid pressure drive system, and an electric drive system may be applied.

Reference numeral 43 denotes a sheet pile mounting engaging member formed of a hook. The sheet pile mounting engaging member 43 is engaged with the feed-out side end of the connecting member 41 wound around the winch drum 42. I have.

The sheet pile mounting engaging member 43 is a steel sheet pile 1
It is formed so as to be able to fit into an engagement hole (not shown) opened at the upper end of the.

Reference numeral 44 denotes a pair of brackets for holding the reaction force. The brackets 44 for holding the reaction force are fixed to the left and right sides of the lower reader 21 at the base end and the press-fit cylinder 30 at the tip. Projecting forward.

When viewed from above (see FIGS. 2 and 3), the reaction force holding bracket 44 is formed in a bent shape. When the horizontal dimension of the lower leader 21 is larger than the horizontal dimension of the auger driving actuator 31, the reaction force holding bracket 44 is viewed from above. The shape can be linear.

Numeral 45 denotes a reaction force holding actuator comprising a cylinder of a fluid pressure operation type. The reaction force holding actuator 45 has the main body portion held by the pin 46 so that the piston rod 45a faces downward. To the bracket for use.

The pin 46 is provided with a short cylindrical spacer 46a (see FIGS. 2 and 3) so as to be located between the reaction force holding bracket 44 and the main body of the reaction force holding actuator 45. It is fitted.

The reaction force holding actuator 45 is not limited to a cylinder operated by a fluid pressure, and a screw jack may be used instead of the cylinder.

Reference numeral 47 denotes a caster type moving wheel.
The moving wheel 47 is mounted on the lower end of the lower reader 21 described above.

Reference numerals 48 and 49 denote connecting brackets, and one connecting bracket 48 is provided for the lower reader 2 described above.
1 is fixed to the vicinity of the upper end of the rear surface, and the other connecting bracket 49 is fixed to the middle of the rear surface of the lower reader 21 in the vertical direction.

It is desirable that the sheet pile press-in / draw-out apparatus having the above-described configuration is mounted on a hydraulically operated working machine 50 (see FIGS. 4 and 5).

The working machine 50 includes a lower traveling body 9 having a pair of left and right endless crawler shoes 8, an upper revolving body 10 rotatably provided above the lower traveling body 9, and an upper revolving body 10 Cab 51 mounted on the main boom 52,
An offset system which includes a boom raising / lowering cylinder 53, an intermediate boom 54, a tip boom 55, a boom swinging cylinder 56, an arm 57, an arm rotating cylinder 58, and an angle adjusting cylinder 59, and is mounted on the upper revolving unit 10. Attachment 60.

The first press-fitting / pulling-out actuator 24, the auger driving actuator 31, and the second
Press-in / pull-out actuator 33, winch drum 42
The working hydraulic pressure is applied to each of the drive mechanism and the reaction force holding actuator 45 from a hydraulic pump (not shown) mounted on the upper swing body 10 of the working machine 50. .

Hereinafter, the structure of the attachment 60 will be described.

The base end of the main boom 52 is connected to the upper
Are pivotally supported by pins 62 extending substantially horizontally.

The main body of the boom raising / lowering cylinder 53 is as follows.
A bracket 63 provided at the front end of the upper revolving unit 10 is pivotally supported via a pin 64 parallel to the pin 62, and a piston rod 53 a of a boom hoist cylinder is attached to a bracket 65 provided on the main boom 52. When a fluid pressure is applied to the head-side fluid chamber or the rod-side fluid chamber of the boom hoisting cylinder 53, the main boom 52 is raised and lowered with respect to the upper revolving unit 10. It is supposed to.

The base end of the intermediate boom 54 is pivotally supported by a vertically extending pin 67 at the distal end of the main boom 52 so that the intermediate boom 54 can swing right and left.

The intermediate portion of the end boom 55 is moved so that the end boom 55 can swing right and left.
Is pivotally supported by a pin 68 parallel to the pin 67.

The bracket (not shown) provided on the left side of the distal end of the main boom 52 described above has a pin (not shown) whose base end of a link bar (not shown) is parallel to the pin 67. A bracket (not shown) provided on the left side surface of the middle part of the tip boom 55 pivotally supports the tip of the link bar by a pin (not shown) parallel to the pin 67. Even if the swing angle of the intermediate boom 54 with respect to the main boom 52 when viewed from above changes due to the parallelogram link mechanism constituted by the main boom 52, the intermediate boom 54, and the tip boom 55, And the tip boom 55 is kept parallel.

The main body of the boom swing cylinder 56 is
A bracket 69 provided on the right side of the tip of the main boom 52 is pivotally supported by a pin 70 parallel to a pin 67, and a piston rod 56a of a boom swing cylinder 56.
Is pivotally supported by a pin 72 parallel to the pin 67 on a bracket 71 provided on the right side of the tip of the intermediate boom 54 to apply fluid pressure to the head-side fluid chamber or the rod-side fluid chamber of the boom swing cylinder 56. Then, the main boom 52
The intermediate boom 54 swings from side to side,
The tip boom 55 moves in parallel to the left and right with respect to the main boom 52.

The intermediate portion of the arm 57 is pivotally supported at the distal end of the distal end boom 55 by a pin 73 parallel to the pin 62.

The main body of the arm rotation cylinder 58 is
The base end of the distal boom 55 is pivotally supported by a pin 74 parallel to the pin 62, and the piston rod 58 a of the arm rotation cylinder 58 is pivotally supported by the base end of the arm 57 by a pin 75 parallel to the pin 62. When a fluid pressure is applied to the head-side fluid chamber or the rod-side fluid chamber of the arm rotation cylinder 58, the arm 57 moves with respect to the tip boom 55.
Rotates.

The main body of the angle adjusting cylinder 59 is pivotally supported by a pin 76 parallel to the pin 62 near the tip of the tip boom 55.

For each of the above-described boom raising / lowering cylinder 53, boom swing cylinder 56, arm rotating cylinder 58, and angle adjusting cylinder 59, the working machine 5
Operating hydraulic pressure is applied from a hydraulic pump (not shown) mounted on the upper revolving superstructure 10.

Further, the arm 5 of the attachment 60
The connecting bracket 48 fixed to the lower leader 21 by a pin 77 parallel to the pin 62 is pivotally supported at the tip of the pin 7, and the piston rod 59 a of the angle adjusting cylinder 59 is parallel to the pin 62. A connection bracket 49 fixed to the lower reader 21 by a pin 78 is pivotally supported.

The operation of the sheet pile press-in / draw-out apparatus will be described below.

When driving the steel sheet pile 1 for earth retaining into the ground using the sheet pile press-in / draw-out apparatus and the working machine 50 shown in FIGS. 1 to 7, the sheet pile 1 is engaged with the feed-out side end of the connecting member 41. After the sheet pile mounting engaging member 43 is fitted into an engaging hole (not shown) at the upper end of the steel sheet pile 1, the connecting member 41 is wound around the winch drum 42 and the steel sheet pile 1 is erected to press-fit. Near the upper end of the front surface of the cylinder 30, a sheet pile press-in member 4 is provided.
0 in advance, and the upper reader 2
2 and the second press-in / pull-out actuator of the sheet pile press-in / pull-out device so that the auger screw 2 is at the highest position and the auger screw 29 and press-fitting cylinder 30 are at the highest position with respect to the upper leader 22. The fluid pressure is applied to both of them (see FIG. 1).

Also, the press-fitting cylinder 30 of the attachment 60, the boom swinging cylinder 56, and the boom swinging cylinder 56 are positioned so that the press-fitting cylinder 30 is located almost directly above the place where the steel sheet pile 1 is to be driven and the press-fitting cylinder 30 is substantially vertical. Fluid pressure is applied to each of the arm rotation cylinder 58 and the angle adjustment cylinder 59 (see FIGS. 4 and 5).

Further, the positioning arm 37 is projected to the front side of the lower leader 21 and the bolt 38 so that the stopper 39 abuts on the front surface of the press-fitting cylinder 30 to suppress the swing of the press-fitting cylinder 30 to the front side. To fix it to the lower reader 21.

When the sheet pile press-fitting member 40 is mounted on the left or right side of the press-fitting cylinder 30 near the upper end thereof, the positioning arm 37 located below the sheet pile press-fitting member 40 is attached to the lower reader. 21 so as not to protrude forward.

Next, the steel sheet pile 1 is disposed substantially vertically along the front surface of the press-fitting cylinder 30, applied to the auger driving actuator 31 to rotate the auger screw 29, and the first press-fitting / pulling-out actuator 24. When the fluid pressure is applied to the rod-side fluid chamber, the upper leader 22 descends with respect to the lower leader 21 as the piston rod 24a descends, and the second press-in / pull-out actuator 33, the auger drive actuator 31, and the press-in cylinder 30 , The auger screw 29 is integrally lowered.

As a result, the sheet pile press-fitting member 40 mounted on the press-fitting cylinder 30 presses the upper end of the steel sheet pile 1 downward, and the steel sheet pile 1 is driven into the ground from the ground surface 20 (FIG. 6).

At this time, the lowering of the press-fitting cylinder 30 in the ground is promoted by the auger screw 29 protruding into the ground and excavating in the ground.

The earth and sand excavated by the auger screw 29 is discharged from the discharge port 30a to the outside of the press-fit cylinder 30.

Further, since the upper leader 22 is inserted into the lower leader 21, the press-fitting cylinder 30 descends substantially vertically, and the steel sheet pile 1 is driven straight.

Furthermore, since the cross-sectional shape of the press-fitting cylinder 30 is formed in a rectangular shape, the steel sheet pile 1 to be driven into the ground can be easily aligned with the press-fitting cylinder 30.

In this way, when the steel sheet pile 1 is driven into the ground, the resistance acting on the steel sheet pile 1 is large, and the work machine 50 tends to rise due to the reaction force of the first press-fitting / pulling-out actuator 24. If there is a tendency, the piston rod 45a of the reaction force holding actuator 45 is attached to an existing fixed structure (not shown) by an engaging means (not shown) such as a chain or the weight of another working machine. It is connected to an object (not shown) to suppress the lifting of the working machine 50 and to promote the driving of the steel sheet pile 1.

When the upper reader 22 is lowered to the lowermost position with respect to the lower reader 21, the application of the fluid pressure to the first press-fitting / pulling-out actuator 24 is interrupted.

The positioning arm 37 is connected to the lower reader 2.
1 so that it does not protrude forward.

This is to prevent the positioning arm 37 from hindering the movement of the auger driving actuator 31. The horizontal dimension of the auger driving actuator 31 is larger than the horizontal dimension of the press-fitting cylinder 30. In this case, there is no problem even if the positioning arm 37 is kept protruding forward of the lower reader 21.

Next, when a fluid pressure is applied to the head-side fluid chamber of the second press-in / pull-out actuator 33, the auger driving actuator is guided by the fixed guide member 27 and the movable guide member 28 as the piston rod 33a descends. 31, the press-fitting cylinder 30, and the auger screw 29 are lowered, and the sheet pile press-fitting member 40 mounted on the press-fitting cylinder 30 causes the steel sheet pile 1 to be driven deeper into the ground (see FIG. 7).

At this time, the lowering of the press-fitting cylinder 30 in the ground is promoted by the auger screw 29 digging in the ground.

The earth and sand excavated by the auger screw 29 is discharged to the outside of the press-fitting cylinder 30 from the discharge opening 30a.

Further, since the auger driving actuator 31 is guided by the fixed guide member 27 and the movable guide member 28, the press-fitting cylinder 30 descends substantially vertically, and the steel sheet pile 1 is driven straight.

In this way, when the steel sheet pile 1 is driven into the ground, the upper leader 22 is raised with respect to the lower leader 21 by applying a fluid pressure to the first press-fitting / pulling-out actuator 24. By applying a fluid pressure to the second press-in / pull-out actuator 33, the auger drive actuator 31,
The press-fit cylinder 30 and the auger screw 29 are raised, and the press-fit cylinder 30 and the auger screw 29 are pulled out from the ground.

At this time, the auger screw 29 is rotated in the direction opposite to the excavation direction as necessary.

When driving the steel sheet pile 1 into the ground, a procedure may be adopted in which the second press-fitting / pulling-out actuator 33 is operated before the first press-fitting / pulling-out actuator 24 is operated. And the second press-in / pull-out actuator 33 may be operated simultaneously.

When the next steel sheet pile 1 is driven into the ground, the attachment 60 is positioned so that the press-fitting cylinder 30 is located almost immediately above the place where the steel sheet pile 1 is to be driven, and the press-fitting cylinder 30 is substantially vertical. Boom hoisting cylinder 53,
Boom swing cylinder 56, arm rotation cylinder 5
8. Fluid pressure is applied to each of the angle adjusting cylinders 59, but since the attachment 60 is of an offset type, it is press-fitted from the position where the steel sheet pile 1 was previously driven to the position where the next steel sheet pile 1 adjacent thereto is to be driven. The cylinder 30 can be easily and accurately moved.

When the press-fitting cylinder 30 is moved to the position where the next steel sheet pile 1 is to be driven in this way, the steel sheet pile 1 is driven according to the procedure described above.

At this time, if the resistance acting on the steel sheet pile 1 is large and there is a tendency that the working machine 50 tends to rise due to the reaction force of the first press-fitting / pulling-out actuator 24, the reaction force holding actuator The piston rod 45a of 45 is connected to an existing fixed structure, a heavy object such as another working machine, or the upper end of the steel sheet pile 1 previously driven by an engaging means such as a chain, so that the working machine 50 is prevented from rising. At the same time, the driving of the steel sheet pile 1 is promoted.

On the other hand, when pulling out the steel sheet pile 1 driven into the ground by using the sheet pile press-in / draw-out device and the working machine 50 shown in FIGS.
By releasing the connection between the connecting piece 28c of FIG. 8 and the bracket 31a of the auger driving actuator 31, the auger screw 29, the press-fitting cylinder 30, and the auger driving actuator 31 are removed. The joining member (not shown) is connected via a connecting member (not shown).

At this time, the first press-fitting / pulling-out actuator 24 is set to the contracted state, and the second press-fitting / pulling-out actuator 33 is set to the extended state.

Further, similarly to the case where the steel sheet pile 1 is driven into the ground, the first press-fitting / pulling-out actuator 24 is used.
When fluid pressure is applied to the head-side fluid chamber and the rod-side fluid chamber of the second press-in / pull-out actuator 33, the steel sheet pile 1
Will be pulled out of the ground.

When the steel sheet pile 1 is pulled out from the ground,
The second press-in / pull-out actuator 33 and the second press-in / pull-out actuator 33 may be separately operated, or alternatively, the first press-in / pull-out actuator 2
The fourth and second press-fitting / pulling-out actuators 33 may be operated simultaneously.

As described above, in the sheet pile press-in / draw-out apparatus shown in FIGS. 1 to 7, since the first press-in / pull-out actuator 24 and the second press-in / pull-out actuator 33 perform the sheet pile driving operation and the sheet pile pull-out operation, the vibration is increased. No noise is generated, and the auger screw 29 promotes the lowering of the press-fitting cylinder 30 in the ground, so that the sheet pile driving operation can be performed efficiently without being affected by the state of the earth and sand in the ground.

Note that the sheet pile press-in / draw-out apparatus of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

[0118]

As described above, the sheet pile press-in / draw-out apparatus of the present invention can provide various excellent effects as described below.

(1) In any one of the sheet pile press-in / pull-out devices described in claims 1 to 3, the first press-in / pull-out actuator 24 and the second press-in / pull-out actuator 33 perform sheet pile driving operation. Since the sheet pile is pulled out, it does not generate noise due to vibration and is suitable for work in residential areas.

(2) In any of the sheet pile press-in and pull-out devices according to claims 1 to 3 of the present invention, the lowering of the press-fitting cylinder 30 in the ground is promoted by the auger screw 29, so that the soil in the ground can be removed. The sheet pile driving operation can be performed efficiently without being affected by the state.

(3) In the sheet pile press-in / pull-out apparatus according to the second aspect of the present invention, when the resistance acting on the steel sheet pile 1 driven into the ground is large, the reaction force holding actuator 4
5 can be connected to an existing structure or heavy object to facilitate driving of the steel sheet pile 1.

(4) In the sheet pile press-in / draw-out apparatus according to the third aspect of the present invention, since the cross-sectional shape of the press-fitting cylinder 30 is rectangular, the steel sheet pile 1 to be driven into the ground is pressed into the press-fitting cylinder 30.
Easy to follow.

[Brief description of the drawings]

FIG. 1 is a right side view showing an example of an embodiment of a sheet pile press-in / draw-out apparatus of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 1;

FIG. 4 is a right side view showing a state in which an example of the embodiment of the sheet pile press-in / pull-out apparatus of the present invention is mounted on a working machine having an offset type attachment.

FIG. 5 is a right side view showing a state before the driving of the steel sheet pile is started in one example of the embodiment of the sheet pile press-in / draw-out apparatus of the present invention.

FIG. 6 is a right side view showing a state in which a steel sheet pile is driven in an example of the embodiment of the sheet pile press-in / draw-out apparatus of the present invention.

FIG. 7 is a right side view showing a state in which the driving of the steel sheet pile has been completed in the example of the embodiment of the sheet pile press-in / draw-out apparatus of the present invention.

FIG. 8 is a right side view showing an example of a conventional steel sheet pile driving operation using a vibro hammer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel sheet pile 21 Lower leader 22 Upper leader 24 First press-fitting / pulling-out actuator 29 Auger screw 30 Press-fitting cylinder 31 Auger driving actuator 33 Second press-fitting / pulling-out actuator 40 Sheet pile press-fitting member 45 Reaction force holding actuator

Claims (3)

(57) [Claims] 1. A front portion of a hollow structure extending vertically.
A notch (21a) extending from the upper edge to the vicinity of the lower end is formed at
Fixed to the lower reader (21), the said lower reader (21) was
Connecting brackets (48) and (49), an upper reader (22) inserted into the lower reader (21) so as to be able to move up and down, and the upper reader (22) is connected to the lower reader (2).
1) a first press-fitting / pulling-out actuator (24) that moves up and down with respect to the notch (21a)
From the lower leader (21) so as to protrude outside the lower reader (21).
A fixed guide member (27) fixed to the die (22);
It is fitted to the guide member (27) so as to be able to move up and down and is underground
Guide to which steel sheet pile (1) to be pulled out from
A member (28), connected to the movement guide member (28);
One and vertically extending auger drive actuator for rotating the auger screw (29) (31), said O
Circumferencial screw (29) in the circumferential direction and at the upper end
Is the pressure attached to the auger drive actuator (31).
The receiving cylinder (30) and the main body are at the upper end of the upper reader (22).
And the piston rod (33a) is guided for movement.
A second press-fitting / pulling-out actuator (33) connected to the member (28) and an upper end of the steel sheet pile (1) when the steel sheet pile (1) to be driven into the ground is arranged along the press-fitting cylinder 30; Front, left and right of the press-fitting cylinder (30) so that
A sheet pile press-in / draw-out device comprising a sheet pile press-in member (40) mounted on a side surface. 2. The sheet pile press-in / pull-out device according to claim 1, wherein one end of the reaction force holding actuator (45), one end of which can be connected to an existing structure or a heavy object, is connected to the lower reader (21). 3. The sheet pile press-in / draw-out device according to claim 1, wherein the press-fitting cylinder (30) has a rectangular cross section.