JPS5922009B2 - Sheet pile press-fitting and pulling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press-fitting/pulling machine for sheet piles having a groove-shaped cross section, and particularly to a sheet pile press-fitting/pulling machine of a type that uses existing sheet piles as an anchor to obtain sheet pile press-fitting/pulling reaction force.

In this type of sheet pile press-in and pull-out machine, the sheet piles are connected in parallel in a plane wave pattern, that is, the webs of adjacent sheet piles are arranged in a zigzag arrangement, so the sheet pile press-in and pull-out machines are difficult to press in and out.
When pulling out, it is necessary to adjust the position of the sheet pile press-fitting and pulling chuck with respect to the reaction force chuck that grips the already erected sheet pile so that it matches the above zigzag.

Conventionally, this position adjustment relies on the mast pivoting with a specific radius on a saddle to which a reaction chuck is attached, supporting the sheet pile press-fitting and pulling chucks, and pivoting the mast with a specific radius.

Such prior art position adjustments are only responsive to sheet piles of specific dimensions.

This will be clarified below with reference to FIG.

When press-fitting and pulling out sheet piles, since the center of gravity C of the next constructed sheet pile B adjacent to the already built sheet pile A is shifted from the center line of the built-in sheet pile, the moment axis E at the time of pressing in and pulling out the sheet pile is It is inclined at an angle to the centerline of the sheet pile.

This inclination is not uniform because the center of gravity of the sheet pile changes depending on the size of the sheet pile.

Therefore, when adjusting the position by turning the specific radius, it becomes impossible to match the axis of the mast turning center and the center of the sheet pile press-fitting and drawing chuck, that is, the axis of the sheet pile press-fitting and drawing machine, to the moment axes having different inclinations.

If the axis of the machine does not match the moment axis and forcefully presses in or pulls out the sheet pile, the mismatch will cause the joint between the next sheet pile to be constructed and the adjacent existing sheet pile to become distorted, and the joint will seize, making construction impossible. Otherwise, the joint may break.

The present invention eliminates the drawbacks of the above-mentioned prior art, and
A sheet pile press-fitting method that allows sheet piles to be press-fitted to the moment axis during pulling out, and the axis of a pulling machine to be aligned with sheet piles of various sizes, so that sheet piles can be press-fitted and pulled out without causing excessive twisting at joints of sheet piles; The purpose is to provide a drawing machine.

In the sheet pile press-fitting and pulling machine of the present invention, a slide-fit type deck whose axis extends in the parallel direction of the piled sheet piles is integrally formed on a saddle equipped with a chuck that grips the built-up sheet piles as a reaction force anchor for sheet pile press-fitting and pulling. A beam movable in the longitudinal direction and the transverse direction is supported on the deck, and a sheet pile press-fitting/pulling chuck adjacent to the chuck and movable up and down relative to the chuck is mounted on the front end of the beam. The deck is equipped with a jack for moving the corresponding portion of the beam in the transverse direction at a portion near the front end and a portion near the rear end of the deck.

According to the present invention, the beam on the deck is moved straight in the transverse direction by appropriately operating the jacks attached to the front end and the rear end of the sliding-fit type deck that supports the beam. It can be moved vertically or rotated using the pressure point of any jack as a fulcrum, and the turning fulcrum can be selected from any of the above jacks, and it can also be moved within the operating stroke of the jack in the transverse direction of the beam. You can change the position arbitrarily.

Therefore, according to the present invention, for sheet piles of various sizes, it is guaranteed that the axis of the sheet pile press-fitting and pulling machine coincides with the moment axis at the time of sheet pile press-fitting and pulling out, without causing unreasonable twisting at the joints of the sheet piles. It is possible to press in and pull out sheet piles.

In the present invention, it is necessary that the sheet pile press-in and pull-out chuck be able to move up and down relative to the reaction chuck. The reason why the beam is movable in the length direction is to make it possible to use it as an anchor, and on the other hand, the reason why the beam is movable in the length direction is to press in the sheet piles, and to use the pull-out chuck to adjust the position forward and backward, as well as to insert new sheet piles. This is because it is necessary to be able to move the sheet pile press-fitting/pulling chuck and the reaction chuck as a whole by one span during press-fitting or pulling out.

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

A chuck 2 that grips the erected sheet pile 1 as a reaction force anchor for press-fitting and pulling out the sheet pile is attached to a saddle 3.

A slip-fit type deck 4 whose axis extends in the parallel direction of the built-up sheet piles is integrally formed on the saddle 3.

The deck may be sleeve-shaped (the types shown in FIGS. 2 to 7) or groove-shaped (the types shown in FIGS. 8 and 9).

A beam 5 is inserted through the deck 4 so as to be movable in the transverse direction thereof.

The beam 5 is longitudinally movable.

In the part near the front end and the part near the rear end of the deck 4,
A jack is provided to move the corresponding part of the beam 5 in the transverse direction.

The jacks may be arranged on both left and right sides in the transverse direction of the deck 4 (as shown in Figures 2 to T and 9), or on one side (
(Fig. 8) is also acceptable.

The jacks are designated by numerals 6, 7, 8, and 9.

For jacking, hydraulic jacking can be applied.

The beam 5 is equipped with a sheet pile press-fit/pull chuck 10 adjacent to the reaction chuck 2 at its front end (left end in FIGS. 2 and 3).

The sheet pile press-fitting/pulling chuck 10 includes a hydraulic cylinder in which the lower end of a plunger 16 is pivotally attached to the front end of the beam 5 by a shaft 17 - a hydraulic cylinder 14 of a plunger device 13.
A sliding block 12 is attached to the hydraulic cylinder-plunger device 13 and is pivotally connected to the shaft 15 by a shaft 15 and can slide up and down along a guide rail 18 on a support tower 11 erected integrally with the beam 5. ing.

One end of a hydraulic cylinder-plunger device 19 for moving the beam 5 in the length direction is coupled to the support tower 11;
The other end of the device is connected to the deck 4.

If necessary, an auxiliary chuck 20 is disposed behind the reaction chuck 2.

The auxiliary chuck 20 is attached to the lower end of a plunger 23 of a hydraulic cylinder-plunger device 22 on an auxiliary beam 21 that is inserted into a sleeve-shaped portion 24 formed at the rear end of the beam 5 so as to be retractable. One end of a hydraulic cylinder-plunger device 25 is connected to the auxiliary beam 21, and the other end of the device is connected to the beam 5.

Between the auxiliary beam 21 and the support frame 26 of the hydraulic cylinder-plunger device 22 of the auxiliary chuck 20, a transverse hydraulic pressure of the beam 21 is connected at one end to the auxiliary beam 21 and at the other end to the support frame 26. A cylinder-plunger device 27 is provided if necessary.

The support frame 26 is integral with a sliding block 29 that can slide along a guide rail 28 on the auxiliary beam 21.

Grip the pre-erected sheet pile 1 with the reaction chuck 2, press-fit the sheet pile,
When the hydraulic cylinder-plunger device 13 is expanded and contracted while the extraction chuck 10 is opened, the sheet pile press-fitting and extraction chuck 10 performs the vertical movement required for press-fitting and extracting the sheet pile.

The sheet pile press-fitting and extraction chuck 10 is raised, a new sheet pile is slightly erected by the chuck, and the sheet pile is used as an anchor in reverse, and the hydraulic cylinder is opened while the reaction force chuck 2 is opened.
When the plunger devices 13 and 22 are synchronously expanded and contracted, the reaction chuck 2 is moved up and down through the beam 5, deck 4, and saddle 3.

Grasp and hold the sheet pile 1 with the reaction chuck 2, press-fit the sheet pile, and remove the pull-out chuck 10 and the auxiliary chuck 20 above the sheet pile.
When the hydraulic cylinder-silanger device 19 is extended,
The beam 5, the sheet pile press-fit, the pull-out chuck 10, and the auxiliary chuck 20 move to the left in FIGS.

If the reaction chuck 2 is lifted up in the same manner as described above at the moved position and then the hydraulic cylinder-plunger device 19 is retracted, the reaction force chuck 2 press-fits the sheet pile and pulls out the chuck 1.
Move towards 0.

The auxiliary chuck 20 can be moved independently to the left and right in FIGS. 2 and 3 by opening, retracting upward, and expanding and contracting the hydraulic cylinder-plunger device 25.

When press-fitting or pulling out a new sheet pile, the purpose can be achieved by operating the jacks 6° 7.8 and 9 in order to adjust the position of the sheet pile press-fitting and pulling chuck 10 in the vertical direction of FIG. 3 with respect to the reaction force chuck 2. .

In this case, by shortening the upper jacks 8, 9 (or lower jacks 6, 7) in FIG. 3 and extending the jacks on the opposite side, the sheet piles are press-fitted together with the beam 5, and the pull-out chuck 10 is moved linearly in the transverse direction of the beam 5. Move to.

In addition, by stopping any one of all the jacks and activating the other jacks, the beam 5 can be rotated using the resting jack as a fulcrum, and the sheet pile press-fitting and pulling chuck 10 is moved against the reaction chuck 2. It revolves around the world.

The pivot point is movable depending on the elasticity of the jack, and is also variable depending on the selection of the jack.

If the above position adjustment and the position adjustment using the hydraulic cylinder-plunger device 21 are used together, the variety of changes in the relative positions of the sheet pile press-fitting and extraction chuck 10 will be further improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the relationship between the center line of the built-in sheet pile and the moment axis during press-in and pull-out of the sheet pile, FIG. 2 is a side view showing an embodiment of the present invention, and FIG. 3 is a plan view. Figure 4 is a rear view, Figure 5 is a front view, Figure 6 is a cross-sectional view, Figure 7 is a cross-sectional view along line 2 - ~ ■, Figures 8 and 9 are examples of changes to the deck. FIG. 1 is a sheet pile, 2 is a reaction chuck, 3 is a saddle, 4 is a deck, 5 is a beam, 6, 7, 8.9 are jacks, 10 is a sheet pile press-fit, a pull-out chuck, 13 is a sheet pile press-fit, a pull-out chuck, and a reaction force Hydraulic cylinder for vertical movement of the chuck--plunger device, 19 hydraulic cylinder--plunger device for vertical movement of the sheet pile press-fitting and drawing chuck.

Claims (1)

[Claims] 1. A slide-fit type deck whose axis extends in the parallel direction of the erected sheet piles is integrally formed on a saddle equipped with a chuck that grips the erected sheet piles as a reaction force anchor for press-fitting and pulling out the erected sheet piles. A beam movable to the deck is supported on the deck, and a sheet pile press-fitting/pulling chuck adjacent to the chuck and movable up and down relative to the chuck is installed at the front end of the beam, and the chuck is mounted near the front end of the deck. A sheet pile press-fitting and pulling machine, characterized in that a jack for moving the corresponding section of the beam in the transverse direction is attached to the section and the section near the rear end.