JPH0629520B2 - Work device for moving on pile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pile on which a pile is continuously placed in the vicinity of a pile and which is capable of performing pile driving and other necessary work. A mobile work device.

(Prior Art) Steel piles such as steel sheet piles are continuously driven into the ground to carry out civil works such as mountain retaining, temporary seawalls, and deadlines.

Especially, as in the caisson foundation construction with steel sheet piles,
In pile construction work on water such as rivers, it was necessary to provide a work scaffold for operations such as driving a pile driver, placing piles or welding joint piles.

Therefore, the following method has been conventionally adopted.

The first method is shown in FIG. 11, in which a single pipe 90 is driven into the side of pile P row continuously cast on the riverbed 93, fixed in combination, and a scaffolding plate 91 is hung over the upper part, and a handrail 92 is provided. Was used as a scaffold for work.

The second method is shown in FIG. 12, in which a supporting steel material 95 such as an angle is welded to the side surface of the row P of the piles, and the scaffolding board 9 is mounted thereon.
6 was used as a scaffolding for crossover work.

Other than these methods, work boats were used without constructing scaffolds, and auxiliary work for pile driving was performed on board.

(Problems to be Solved by the Invention) In the first method described above, since a work boat or the like must be used in advance along the place where the piles P are to be placed and the single pipe 90 must be driven and set by the riverbed 93, the starting ship. Therefore, it took a lot of labor and time to drive the single pipe 90. Further, when removing the single pipe 90 after completion of the work, there is also a drawback that a large-scale work must be similarly performed using a work boat.

In the second method, since the scaffolding plate supporting steel material 95 is attached to the side surface of the pile P and the scaffolding board 96 is hung, the supporting steel material 95 is welded to the pile P and removed by gas cutting or the like after the work is completed. Therefore, there is a drawback that the welding removal trace remains on the pile P in addition to the time and labor required for these operations. Further, depending on the water level, the supporting steel material 95 may not be welded in some cases.

Further, in the above-mentioned method, when the pile press-fitting / pulling-out machine is used for the pile press-fitting, when the clamp configured below the press-fitting machine holds the pile P, the scaffolding plate or the like to be attached to the pile P cannot be attached to the work. The range of scaffolding was limited and work efficiency deteriorated.

When a work boat is used, on-board work is not stable due to the shaking of the ship and is dangerous, and the work posture is not stable and the work efficiency is low, especially when carrying heavy objects or welding work. Was. Further, when the operator of the pile driver and the welding worker, etc. are on the same ship, the work control cannot be taken when the occupations of the workers on the ship are different, which further deteriorates the efficiency. .

(Means for Solving the Problems) The present invention solves the above-mentioned conventional drawbacks. A clamp for sandwiching an existing pile is attached to each of a plurality of supports, and an existing fixture is provided between the supports. A moving mechanism including a fluid pressure cylinder arranged parallel to the pile row direction is installed, and a workbench is mounted on the side of the support.

(Operation) Hold the existing pile with the clamp attached to the support body, fix the work device for moving on the pile on the existing pile, and perform the pile driving work on the work bench arranged on the side of the support body. Perform various work.

When moving the work device, release the pile holding state of the rear clamp while keeping the pile holding state of the front clamp,
A support mechanism and a rear clamp are moved forward in the existing pile row direction by a moving mechanism provided on the support body to hold the front pile. Then, by releasing the pile holding state of the front clamp and advancing the front support body, the working device advances on the existing pile. The reverse operation is performed when the working device is retracted.

(Example) Next, the Example of this invention is described in detail with reference to an accompanying drawing.
In the drawings, FIG. 1 is a plan view of an embodiment of a working device for moving a pile according to the present invention, FIG. 2 is a partially cutaway enlarged sectional view taken along line II-II of FIG. 1 and FIG. 3 is FIG. FIG. 3 is a partially cutaway enlarged sectional view taken along line III-III.

The working apparatus A according to the present embodiment is a first installation of a first clamp 3 that holds an existing pile P such as a steel sheet pile or a concrete sheet pile.
A second support 70 to which the support 30 and the second clamp 7 are attached
And a hydraulic cylinder 5 for moving both the supports 30, 70 in the traveling direction of the pile press-fitting / extracting machine 8, and the both supports 3
It has a configuration in which a pair of worktables 4 are placed on both sides of 0 and 70.

Explaining this configuration in detail, the first clamp 3 that holds the existing pile P to fix the work device A on the pile has a guide rail 35 whose upper end is fixed to the fixing plate 2 of the first support body 35.
, Is slidably engaged in the left-right direction in FIG.

As shown in FIG. 4, the guide rail 35 has an engaging portion 35a at the lower end of the guide rail 35 and has a first
The engaging portion 35a is provided on the upper surfaces of the holding claw 31 and the second holding claw 32.
Although the concave groove 3a that slidably engages with is formed, the method of engaging the guide rail 35 and the holding claw may be the structure shown in another embodiment described later.

At both ends of the fixed plate 2, a frame 21 in which a frame 22 is horizontally stretched at the lower end is vertically installed, and side plates 23 are provided upright at the ends of the frame 22. Frame 21, side plate 23
Is provided with a plurality of rotors 25 via support members 24.

As a method of engaging the workbench 4 and the frame 22, the workbench 4 may be connected to the frame 21 and the side plate 23 by a support member that slides and engages each other without forming the rotor 25. it can.

The work table 4 is formed by joining two rectangular steel plates 41,
Fitting recesses 42 for fitting and housing the rotor 25 are formed at both ends thereof. Therefore, the workbench 4 is supported on the rotor 25 at both ends and is movable on the frame 22 in the pile row direction. Besides, the workbench 4 may be provided only on one side of the support 30 depending on the situation of the work site.

Another example of the work table 4 is shown in FIG. In this example, a frame 40 is constructed by connecting a pair of frames 41a made of long steel material with a connecting material 41b, and a covering material 41c such as expander metal or striped steel plate is stretched on the frame 40. It becomes. According to this example, there is an advantage that the workbench 4 can be made of a small amount of material and lightweight.

The first holding claw 31 and the second holding claw 32 that form the first clamp 3 are slidably fitted to the guide rail 35 provided on the lower surface of the fixed plate 2 as described above.

In this embodiment, a fluid pressure cylinder 33 provided on the side surface of the guide rail 35 is used as a moving mechanism for moving (opening and closing) the first holding claw 31 and the second holding claw 32. That is, the tip end portion of the piston rod 33a of the cylinder 33 is fixed to the upper end of the first holding claw 31 and the other end of the cylinder 33 is fixed to the upper end of the second holding claw 32. The first holding claw 31 and the second holding claw 32 move.

Further, in the present embodiment, both the holding claws 31 and 32 are configured to be movable, but a configuration in which either one of the holding claws is fixed to the fixing plate 2 can also be adopted. In that case, the holding claw to be fixed can be adjusted in its fixing position according to the size and thickness of the pile P by an adjusting bolt or the like (not shown).

The number of the first clamps 3 is two in this embodiment, but the number is not limited to this. The number and installation positions of the cylinders 5 of the moving mechanism can be set arbitrarily.

The auxiliary cylinder 38 is for moving the holding claws 31 and 32 to the left and right, and is not an essential component of the present invention. Reference numeral 45 in the figure denotes a handrail.

FIG. 3 is a sectional view taken along the line III-III in FIG. As shown in the drawing, the second clamp 7, which constitutes the second support body 70, the fixing base 2
0, the frame 27, the side plate 29, or the workbench 4 has the same structure as the first support 30 described above, and therefore description thereof will be omitted. However, the workbench 4 is mounted on the frame 28 by the projection 27a that fits into the fitting recess 42. It is fixedly supported by.

The workbench 4 can be fixed to the frame 28 by bolting or welding.

Next, the operation of the above embodiment will be described.

When mounting the existing pile P on the working apparatus A, the existing pile P is held by the first clamp 3 and the second clamp 7. In this state, the pile work device A performs pile driving work and other auxiliary work.

The workbench 4 has a rectangular shape and is supported at two points on the frame 22 of the first support body 30 and the frame 28 of the second support body 70, so that the worktable 4 has good stability, and the tip thereof is a pile press-fitting / extracting machine. Since it is extended to the vicinity of the tip of 8, the worker can start supplying piles to the pile press-in / pull-out machine 8 and efficiently perform various operations in a wide space on the work table 4.

When moving the working device A from the state shown in FIG.
First, the cylinder 33 of the second clamp 7 is actuated in the opposite manner to the holding state described above to separate the first holding pawl 31 and the second holding pawl 32 of the second clamp 7 from the pile P width. afterwards,
The number of cylinders 5 is reduced to advance the fixed base 20 of the second support body 70, and the second clamp 7 holds the front pile P.

At this time, as described above, the workbench has one end fixed to the frame 28 of the second support 70 and the middle portion of the workbench being the first part.
Since the support 30 is movably supported on the frame 22, the work table 4 also moves forward together with the second support 70.

When the second clamp 7 is fixed to the pile P, the holding state of the pile P of the first clamp 3 is released, the cylinder 5 is extended and the first support body 30 is advanced, and the front pile P is moved by the first clamp 3. By holding the work device A, the work device A advances on the pile row.
By alternately moving the first clamp and the second clamp in this manner, the working device A is moved forward or backward on the pile row.

In addition, during various operations on the work table 4, even if the pile P tries to expand the first and second holding claws 31 and 32 due to the reaction force for the work, the piles P try to expand the first and second holding claws 31 and 32. The force is applied to the tips of the first and second holding claws 31 and 32, and
Since there is a frictional force between the holding claw 31 and the second holding claw 32 and the guide rail 35, a self-locking action occurs between them, and the first holding claw 31 and the second holding claw 32 cannot be expanded. Instead, the pile P can be held in a held state.

6 and 7 are front views of a second embodiment of the clamp. The first holding claw 11 and the second holding claw 12 of the clamp 6 of the present embodiment are the guide rails 13 provided on the lower surface of the fixed base 2.
The pile press-fitting / extracting machine 8 is slidably fitted into the pile press-fitting / extracting machine 8 and is movable in the direction orthogonal to the forward direction of the pile press-fitting / extracting machine 8.

In the present embodiment, a drive cylinder 14 using fluid pressure such as hydraulic pressure provided on the side surface of the guide rail 13 is used as a moving mechanism for the first and second holding claws 11 and 12. That is, the second holding claw 12 is fixed to the tip end portion of the piston rod 15 of the drive cylinder 14,
Since the other end of is fixed to the first holding claw 11, the sliding of the piston rod 15 moves the first holding claw 11 and the second holding claw 12.

Further, a large number of teeth 16 are formed or a material having a large friction coefficient is pasted on the respective facing surfaces of the first holding claw 11, the second holding claw 12 and the guide rail 13,
Braking means is provided so that both the holding claws 11 and 12 do not move carelessly with respect to the guide rail 13.

The second holding claw 12 has a pair of upper and lower cylinder portions 12a formed therein, and a cylinder 12b is slidably accommodated in the cylinder portion 12a. The tip end of the piston rod 12c of the cylinder 12b is fixed to the inner part of the cylinder portion 12a, and the bottom of the cylinder 12b is located on the surface side of the second holding claw 12 facing the first holding claw 11. A holding body 17 is provided at the bottom of 12b.

The guide rail 13 shown in FIG. 6 and FIG.
2 are installed side by side on the underside of the
In FIG. 3, the concave grooves 18 of the first holding claw 11 and the second holding claw 12 are arranged so as to sandwich.

Next, a third embodiment of the clamp will be described with reference to FIGS. 8 and 9.

In this embodiment, a position fixing cylinder 11b is attached to the inner upper ends of the first and second holding claws 11 and 12 of the clamp 6 of the second embodiment. In the present embodiment, the cylinder 11b is contracted during movement of the holding claws 11 and 12 of FIG. 8, and the cylinder 1b is held in the pile P holding state of FIG.
By extending 1b and pressing the cylinder 11b against the surface of the guide rail 13, the two holding claws 11 and 12 are fixed to the fixing base 2.

According to the present embodiment, it is possible to accurately determine and lock the holding positions of the piles of the holding claws 11 and 12, and to reliably prevent the holding claws 11 and 12 from unintentionally expanding.

Another example of the cylinder mechanism built in the second holding claw in each of the above-described embodiments is shown in FIG.

In this example, the cylinder portion 12 formed in the second holding claw 12
A piston 12f is slidably provided on a and the piston 1
Since the holding claw 17f is formed at the tip of the 2f rod 12k, it has an advantage that the structure is simple.

(Effects of the Invention) As described above, according to the present invention, for pile driving work on the water such as rivers or on the ground where working conditions are bad, it is used for driving operation of the pile driver and auxiliary work for pile driving. There is no need to set up a scaffold or to use a work boat, and pile driving work can be performed safely and efficiently at a work site with poor scaffolding. Further, it is easy to install and remove the device on the pile, and it is possible to use it permanently.

[Brief description of drawings]

The drawings show embodiments of the present invention, etc., and FIG. 1 is a plan view of an embodiment of a working device for moving a pile according to the present invention.
Fig. 1 is a partially cutaway enlarged sectional view taken along the line II-II in Fig. 1, Fig. 3 is a partially cutaway enlarged sectional view taken along the line III-III in Fig. 1, and Fig. 4 is a side view showing the relationship between the clamp and the guide rail. FIG. 5 is a partially cutaway perspective view showing another example of the workbench, FIGS. 6 and 7 are partially cutaway front views of a second embodiment of the clamp, and FIGS. 8 and 9 are views of the clamp. 10 is a partially cutaway front view of the third embodiment.
The figure is a partially cutaway sectional view showing another example of the gripping claw formed in the second clamp, and FIGS. 11 and 12 are explanatory views of a conventional example. 3, 7 ... Clamp, 4 ... Workbench, 5 ... Moving mechanism,
30, 70 ... Support, P ... Pile

Claims (1)

[Claims] 1. A clamp for sandwiching an existing pile is attached to each of the plurality of supports, and a moving mechanism composed of a fluid pressure cylinder arranged parallel to the existing pile row direction is installed between the supports to support the above-mentioned supports. A work device for moving on a pile with a work table placed on the side of the body.