JP2002127879A - Outrigger, working vehicle with outrigger and pile for execution of working vehicle with outrigger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dislocation of a grounding part once set at working site in the cross direction (horizontal direction) due to vibration, etc., in the middle of working. SOLUTION: The grounding part of an outrigger is formed of trapezoidal or triangular grounding pieces 11-14, and these grounding pieces are mounted on an outrigger leg part (base part 16) in a state free to revolve A turn buckle 17 to set inclination of the grounding pieces 11, 13 is provided between the grounding pieces and the base part 16. The grounding pieces 12, 14 of (a) are fixed in a flat state by working of wedge part 18. In case of (b), the grounding pieces 11, 13 are fixed in an optional revolving state by the turn buckle 17, and the grounding pieces 12, 14 do not receive working of the wedge part 18 (the wedge part 18 retreats). An example of providing a pile part to more certainly prevent dislocation of the leg part by entering underground and an example of providing a laser marking device to clearly indicate a piling position, etc., are also disclosed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outrigger for stably supporting a vehicle equipped with various working devices such as a pile driving device and an observation device on the ground, and more particularly to a grounding portion once set at a working point. Is prevented from shifting in the horizontal direction (horizontal direction) due to, for example, vibration during work.

[0002] In the present specification, putting a pile to be constructed into the ground by various methods such as rotary drive, linear drive and driving is referred to as "pile driving".

[0003]

2. Description of the Related Art FIG. 5 is an explanatory view showing a conventional crawler-type vehicle having an outrigger function, wherein 1 is an outrigger provided at, for example, two places in front and rear of the crawler-type vehicle, 1a is a cylinder, 1b is the cylinder 1a
Of the crawler-type vehicle, 4 is a crawler-type vehicle base, 4 is a crawler-type vehicle operation room, 5 is a pile (hollow or not hollow), 6 Is a leader (pile driving device) for rotating the pile 5 suspended in a vertical state and pressing it into the ground from the tip thereof, 6a is a rotating cap for supporting the pile 5 in a detachable manner, and 6b is a pile cap. 5, a winch 6c for lifting the upper end 5 so that the upper end thereof is located at a position corresponding to the rotating cap 6a.
Is a rotary drive motor for the stake 5 and the rotary cap 6a, 6d is a linear drive motor for the stake 5 and the rotary cap 6a, 6e is a rotary drive motor for the winch 6b, and 6f is a tip-side portion of the suspended and vertical pile 5 An anti-vibration portion 7 for surrounding and preventing lateral vibration, a support frame 7 that supports the reader 6 and can be tilted from a substantially vertical state as shown to a state substantially parallel to the base 3, and 7 a is a hydraulic drive for the support frame 7. Parts (cylinder and piston) and 8 indicate cables and pipes for supplying hydraulic pressure and electric power to various drive motors (hydraulic motors or electric motors) 6c, 6d and 6e, respectively.

In the illustrated pile driving preparation mode, the leader 6 and the support frame 7 are set in a substantially vertical state by the operation of the hydraulic drive unit 7a. The pile 5 lifted by the winch 6b is placed on the upper end side peripheral surface. The protruding portion is supported by the rotating cap in a state of being inserted into the window portion of the rotating cap 6a. The leg portion 1b of the outrigger 1 is set in a state in which the flat surface on the distal end side thereof is in contact with the ground.

[0005] Thereafter, the pile 5 is pressed into the ground by operating the rotary drive motor 6c and the linear drive motor 6d.

In this operation mode, the crawler type vehicle is supported on the ground by the legs 1b of the outrigger 1 and the crawler 2.

[0007]

In the case of such a conventional outrigger, the flat ground contact portion of the leg portion is shifted laterally from the initial set point due to vibrations generated during the press-fitting operation of the pile. As a result, there is a problem that it is difficult to press-fit the stake into the original expected position.

[0008] The displacement of the pile press-fitting position is achieved by connecting a pile of the lower frame (for example, a steel pipe pile) and a column of the upper frame (for example, a factory-processed steel frame) by a frame joint and using this as the foundation of the building. In such a case, it cannot be ignored. This is because the position of the stake pressed into the ground becomes the position of the pillar of the building as it is.

The details of the pile-column integration method are disclosed in, for example, JP-A-11-181790.

Therefore, in the present invention, the grounding portion of the outrigger is formed by a plurality of rotatable grounding pieces, and the grounding portion is
The inclined (ground side) end of the grounding piece is set on the ground in such a manner that it penetrates into the ground, so that a pile-shaped part that enters the ground in this set state is added to the leg of the outrigger, An object is to prevent lateral displacement of an outrigger at the time of work or the like.

Another object of the present invention is to provide a work vehicle equipped with an outrigger with an optical marking device for clearly indicating a work target position such as a stakeout on the ground, for example, so as to improve the position accuracy of a stakeout location or the like.

Another object of the present invention is to provide a pointed portion at the lower end of the pile to reduce the deflection of the pile itself due to the rotational force or the like received at the start of the pile driving.

[0013]

The present invention solves this problem as follows. (1) The grounding portion of the outrigger is formed of a plurality of grounding pieces (for example, 11 to 14 described later), and each of the grounding pieces is rotatably attached to the leg portion of the outrigger (for example, the base 16 described later). . (2) In the above (1), as the grounding piece, a flat plate-like one in which the whole planar shape when each is in a substantially horizontal state is a square shape is used. (3) In the above (1) and (2), an inclination fixing means for selectively fixing the inclination of the contact piece is provided. (4) In the above (3), the inclination fixing means is provided in a mode having individual operation units (for example, a turnbuckle 17 described later) between the leg and the grounding piece. (5) In the above (3), the inclination fixing means is provided with an operating portion (for example, a tubular operating portion 19 described later) movable at least in the longitudinal direction of the leg portion, and a grounding strip according to the moving length of the operating portion. Is provided in a mode that includes a connecting portion (for example, a connecting action portion 20 and a link member 21 described later) for inclining the connecting portion. (6) In the above (1) to (5), a pile-shaped portion (for example, 22 described later) is provided on the ground side portion of the leg to prevent the leg from slipping into the ground and being displaced. (7) In a work vehicle provided with an outrigger having a leg driven in the direction of contacting and separating from the ground and a ground contact portion on the tip side thereof, an optical marking device (for example, described later) for specifying a work target position such as pile driving Laser marking device 23) is provided. (8) At the lower end portion of a pile constructed by a work vehicle provided with an outrigger having a leg portion driven in a direction of contacting and separating from the ground and a ground contact portion on the tip side thereof, the pile being attached to the work vehicle, The pointed portion (for example, 24 described later) is formed so as to protrude in its own longitudinal direction.

According to the present invention, as described in (1) and (2) above, the grounding portion of the outrigger is formed by a plurality of rotatable grounding pieces, and the grounding portion is so shaped as to bite into the ground. By setting, lateral displacement of the outrigger at the time of work or the like is prevented.

Further, as described in (3), (4) and (5) above, by selectively fixing the inclination of a plurality of rotatable grounding pieces, the entire outrigger can be installed in a stable state. I have.

Further, as described in (6) above, by providing the outrigger with a pile-like portion for being put into the ground, the lateral displacement of the outrigger is reliably prevented.

Also, as described in (7) above, by providing an optical marking device for clearly indicating the position of the stakeout or the like, the positional accuracy of the actual stakeout location or the like is improved.

Further, as described in (8) above, by providing a pointed portion at the lower end portion of the work vehicle construction pile with outriggers, it is possible to prevent the pile itself from being shaken at the start of pile driving or the like.

[0019]

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

As described above, the present invention is directed to an outrigger of a vehicle provided with various working devices such as a pile driving device and an observation device. However, in the following embodiments, for convenience of explanation, the pile driving device will be described. A working vehicle equipped with

The main differences between the contents shown in FIGS. 1 to 4 and the crawler type vehicle having the outrigger function shown in FIG. 5 are as follows. (1) Prevent lateral displacement during work such as pile driving. Therefore, the grounding portion of the outrigger is divided into a plurality of grounding pieces 11 to 14, so to speak, and the grounding pieces are provided rotatably with respect to the legs (see FIGS. 1 and 2). In order to prevent stakes, a pile-shaped portion 22 that can be pressed into the ground is provided on the leg of the outrigger (see FIG. 3). (See FIG. 4) (4) The pointed portion 24 is formed at the lower end portion of the pile (see FIG. 4) in order to reduce the deflection of the pile at the start of the rotational driving.

The new reference number used in FIGS.
1 to 24. In addition, reference numbers with alphabets are used to indicate that they are part of the components corresponding to the numeral parts in principle.

Here, 11 to 14 are trapezoidal or triangular grounding pieces, 11a and 13a are a pair of outer rising pieces, 11b and 13b are holes formed in the outer rising pieces, 11c and 13c. Are a pair of inner standing pieces, 11d and 13d are holes formed in the inner standing pieces, 12a and 14a are rotating shafts, 12b
The outer top portions 14 and 14b restrict the rotation range (of the grounding pieces 12 and 14) when the grounding pieces 12 and 14 are rotated, which will be described later. A shaft (a part of the leg 1b), 15a is formed on the outer peripheral surface of the shaft, and a screw portion 16 corresponding to a cylindrical operation portion 19 described later is integrated with the shaft 15, and grounding pieces 11 to 14 are formed. Are pivotally mounted (part of the leg 1b), 16a is a connecting shaft incorporated in the holes 11d, 13d of the inner standing pieces 11c and 13c of the grounding piece, and 16b is a pair of Upper protruding piece,
16c is a hole formed in the upper projecting piece 16b, 16d is a pair of lower projecting pieces, and 16e is a lower projecting piece 1
The hole 17 formed in 6d is the outer standing piece 1 of the grounding piece.
A turnbuckle 17a is provided between the base 1a, 13a and the upper protruding piece 16b of the base, 17a is a sleeve, 17b is an extension of one end of the sleeve from, for example, a right-hand screw (not shown), and is an outer standing piece 11a. And hole 1 of 13a
A lower end mounting shaft 17c incorporated in 1b, 13b is an extension from a left-hand thread (not shown) at the other end of the sleeve, and an upper end mounting shaft incorporated in the hole 16c of the upper projecting piece 16b. Numeral 18 is slidable in the direction A along rails (not shown) formed on the upper surfaces of the grounding pieces 12 and 14, and engages with the bottom surface of the lower projecting piece 16d of the base by sliding inward. The wedge-shaped part 19 is
A cylindrical operating portion (see FIG. 2) which is screwed with the screw portion 15a of the shaft 15 and moves up and down in accordance with its own rotation operation;
Reference numeral 20 denotes an annular groove formed on the outer peripheral surface of the cylindrical operation portion 19;
Is a connecting portion which is guided by the annular groove portion 19a and moves up and down (without rotation), 20a is a projecting piece portion of the connecting portion 20;
20b is a hole formed in the protruding piece 20a, 21 is a link member attached between the outer standing pieces 11a, 13a of the grounding piece and the protruding piece 20a of the connection action part, and 21a is one end of the link member 21. And the lower end mounting shaft 21b incorporated in the holes 11b and 13b of the outer standing pieces 11a and 13a, and the upper end 21b on the other end of the link member 21 and incorporated in the hole 20b of the protruding piece 20a. Mounting shaft, 22
Is a stake-shaped portion having a cross-shaped cross-section and installed inside the base 16 and moving up and down by, for example, hydraulic drive (FIG. 3).
, 23 is a red line laser marking device (see FIG. 4) installed at a plurality of locations (for example, two locations) of the cylinder 1a of the outrigger 1, and 24 is a pointed portion (FIG. 4) formed at the lower end of the pile. ), Respectively.

FIGS. 1A and 1B are explanatory diagrams showing a grounding section mechanism (No. 1) of an outrigger. FIG. 1A shows a flat state of each grounding piece, and FIG. 1B shows a rotating state of each grounding piece. .
In the case of (b), the whole grounding piece has a shape in which a pyramidal tip portion is flattened or this flat portion is opened.

The operator can positively set the degree of rotation among the four grounding pieces only on the grounding pieces 11 and 13 to which the turnbuckle 17 is attached.

The sleeve 17a of the turnbuckle 17 provided on each of the grounding strips 11 and 13 is operated (turned).
And the distance between the right-hand thread portion and the left-hand thread portion therein changes according to the operation amount, so that the grounding pieces 11 and 13 respectively rotate about the connection shaft 16 a of the base 16.

The rotation of the grounding strips 11 and 13 is independent of each other, and the rotatable range is as shown in FIG. 1 (b). Until the base 16 is hit.

This turning state is fixed by the action of the right-handed screw and the left-handed screw of the turnbuckle 17.

In the case of FIG. 1A, the grounding pieces 11 and 13 are fixed in a flat state by the operation of the turnbuckle 17, and the grounding pieces 12 and 14 are fixed by the operation of the wedge-shaped portion 18.

In the case of FIG. 1B, the grounding pieces 11 and 13 are fixed in a rotating state by the operation of the turnbuckle 17, and the grounding pieces 12 and 14 are not affected by the wedge-shaped portion 18 (wedge-shaped portion). 18 has receded).

An operator rotates and fixes the grounding pieces 11 and 13, and fixes the wedge-shaped portion 18 and the base 16 of the grounding pieces 12 and 14.
When the outrigger 1 is lowered to the ground after loosening the engagement state with the bottom portion of the lower protruding piece 16d, the grounding pieces 12,
14 rotates about its own rotating shafts 12a and 14a by the so-called reaction from the ground, so that the state shown in FIG.

The rotatable range of the grounding strips 12, 14 is such that their outer tops 12b, 14b are in contact with the edge portions of the grounding strips 11, 13 or the upper surfaces of the grounding strips 12, 14 are the lower projecting strips of the base 16. It hits the bottom surface of the portion 16d until the state shown in the figure is reached. In this state, the wedge-shaped portion 18 slides outward and comes off the lower protruding piece 16d.

FIGS. 2A and 2B are explanatory views showing a grounding mechanism (No. 2) of the outrigger. FIG. 2A shows a flat state of each grounding piece, and FIG. 2B shows a rotating state of each grounding piece. .

The difference from the grounding portion of FIG. 1 is as follows.
1 and 13 rotate simultaneously.

That is, when the tubular operating portion 19 is turned, for example, clockwise in the flat state of FIG. 2A, the tubular operating portion moves upward with respect to the shaft 15.

With this upward movement, the connecting action portion 20
It is pulled up to the annular groove portion 19a of the tubular operation portion 19 without slipping and rotating at all in the rotation direction.

FIGS. 3A and 3B are explanatory views showing the grounding mechanism (part 3) of the outrigger. FIG. 3A shows a flat state of each grounding strip, and FIGS. The moving state is shown.

Here, the turnbuckle 17 shown in FIG. 1 is used as an operating means for rotating the grounding strips 11 and 13.
In (d), the degree of rotation of each grounding piece is sequentially increased.

In the state (d), the leg 1 of the outrigger 1
The pile 22 installed inside the base b (base 16) is pressed into the ground by the action of a hydraulic device (not shown).

By this press-fitting, it is possible to surely prevent the ground pieces 11 to 14 having a substantially pyramid shape as a whole from shifting in the lateral direction.

FIG. 4 is an explanatory view showing a crawler type vehicle provided with means for improving the positioning accuracy of pile driving.

The new features here are as follows:-The red line laser marking device 23 is attached to the outrigger 1
(E.g., two places) of the cylinder 1a. The pointed portion 24 is formed on the bottom surface of the pile 5.

By using the laser marking device 23,
The position of the tip of the pile and its corresponding position can be indicated on the ground or in space as an intersection of the laser beams.

By adjusting the stop position of the crawler-type vehicle so that this intersection point coincides with the planned pile driving position and the corresponding portion, the deviation between the actual driving position of the pile 5 and the predicted position is virtually eliminated. I have.

Since the pile 5 having the pointed portion 24 is used, the pile itself is less shaken due to the rotation operation at the start of the pile driving, and the driving position of the pile 5 is combined with the use of the laser marking device 23. Increases accuracy.

Also, since the resistance to the ground enters the ground through the small pointed portion 24, the pile driving operation by the leader 6 can be performed efficiently.

The present invention is not limited to the contents described in the above embodiments. The shape and number of the grounding strips 11 are arbitrary. Not base 1
For example, an attachment type that is bolted to 6 or the like may be used.
7), the grounding piece may be biased to a flat state by an elastic member, and the grounding piece may rotate against this elastic force when the outrigger is set on the ground. By fixing the elastic rubber to the entire bottom surface of each of the grounding pieces 11, 12, 13, and 14 with, for example, bolts, soil, sludge, etc. do not come out to the surface side of the grounding face from the gap between the grounding pieces. You may do so.

[0048]

As described above, according to the present invention, the grounding portion of the outrigger is formed by a plurality of rotatable grounding pieces, and the grounding portion is set so as to bite into the ground, so that it can be used during work or the like. The lateral displacement of the outrigger can be prevented.

Further, since the inclination of the plurality of rotatable grounding pieces is selectively fixed, the entire outrigger can be installed in a stable state.

Further, since the outriggers are provided with the pile-like portions for being put into the ground in the legs, the lateral displacement of the outriggers can be reliably prevented.

Further, since the optical marking device for specifying the position of the stakeout or the like is provided, the position accuracy of the actual stakeout location or the like can be improved.

Further, since the pointed portion is provided at the lower end portion of the work vehicle construction pile with outriggers, it is possible to prevent the pile itself from being displaced at the start of pile driving or the like.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an outrigger ground contact portion mechanism (part 1) of the present invention. (a) shows a flat state of each grounding piece, and (b) shows a rotating state of each grounding piece.

FIG. 2 is an explanatory view showing an outrigger ground contact mechanism (part 2) of the present invention. (a) shows a flat state of each grounding piece, and (b) shows a rotating state of each grounding piece.

FIG. 3 is an explanatory view showing an outrigger grounding mechanism (part 3) of the present invention. (a) shows a flat state of each grounding strip, and (b) to (d) show different rotation states of each grounding strip.

FIG. 4 is an explanatory view showing a crawler type vehicle provided with a means for improving the positioning accuracy of pile driving according to the present invention.

FIG. 5 is an explanatory view showing a conventional crawler-type vehicle having an outrigger function.

[Explanation of symbols]

1: Outrigger provided on crawler type vehicle 1a: Cylinder 1b: Leg 2: Crawler 3: Base of crawler type vehicle 4: Driving operation room 5: Pile to be constructed 6: Leader (pile driving device) 6a: Rotating cap 6b : Winch 6c: Rotary drive motor for rotary cap 6a 6d: Linear drive motor for pile 5 and rotary cap 6a 6e: Rotary drive motor for winch 6b 6f: Anti-sway unit 7: Support frame of reader 6 7a: Hydraulic drive unit (cylinder) 8: Cables and pipes 11 to 14: Ground strips 11a, 13a: Outer upright pieces 11b, 13b: Holes 11c, 13c: Inner upright pieces 11d, 13d: Holes 12a, 14a: Rotating shaft 12b , 14b: outer top for regulating the rotation range 15: shaft (part of leg 1b) 15a: screw Part 16: Base (part of leg 1b) 16a: Connecting shaft 16b: Upper projecting piece 16c: Hole 16d: Lower projecting piece 16e: Hole 17: Turnbuckle 17a: Sleeve 17b: Lower mounting shaft 17c: upper end side mounting shaft 18: wedge-shaped portion 19: cylindrical operating portion 19a: annular groove portion 20: coupling action portion that moves up and down (without rotating) 20a: projecting piece portion 20b: hole portion 21: link member 21a: Lower end side mounting shaft 21b: Upper end side mounting shaft 22: Pile portion 23: Laser marking device for red line 24: Pointed portion formed at lower end portion of pile

Claims (8)

[Claims] 1. A leg attached to a work vehicle so as to be movable in a direction of contacting and separating from the ground, and a leg portion driven in the direction of the contact and separation and a grounding portion on a tip side thereof, and the grounding portion is connected to the ground. In an outrigger that stably supports the work vehicle in a contact state, the grounding portion is formed of a plurality of grounding pieces, and the grounding piece is attached to the legs in a rotatable state, and the grounding piece is provided in a predetermined range. An outrigger characterized in that it can be set to an inclined state. 2. The outrigger according to claim 1, wherein each of said grounding strips is a flat plate having an overall planar shape of a square when each is in a substantially horizontal state. 3. The outrigger according to claim 1, further comprising an inclination fixing means for selectively fixing the inclination of the grounding piece. 4. The outrigger according to claim 3, wherein said inclination fixing means is provided in a form having an individual operation portion between said leg portion and said grounding piece. 5. The tilt fixing means is provided in a form comprising at least an operating portion movable in a longitudinal direction of the leg portion, and a connecting portion for inclining the grounding piece according to a moving length of the operating portion. The outrigger according to claim 3, wherein: 6. A pile-shaped portion is provided on a ground side portion of the leg portion to prevent the leg portion from slipping into the ground to prevent the leg portion from shifting.
The outrigger according to any one of claims 1 to 5, wherein 7. An optical marking device for specifying a work target position such as pile driving in a work vehicle provided with an outrigger having a leg portion driven in a direction of contacting and separating from the ground and a ground contact portion on the tip side thereof. A work vehicle with an outrigger, which is provided. 8. A pile constructed by a work vehicle provided with an outrigger having a leg portion driven in a direction of contacting and separating from the ground and a ground contact portion on a tip end thereof, wherein the pile is mounted on the work vehicle. A work vehicle construction pile with outriggers, characterized in that a pointed portion is formed at a lower end portion thereof in such a manner as to protrude in its own longitudinal direction.