JPH023853B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application] The present invention relates to a pile driver, and particularly to a pile driver capable of continuously driving sheet piles in a straight line.

[Prior art]

Generally, sheet piles are used in closing construction, earth retaining construction, agricultural canal construction, etc. due to their ease of handling and speed of construction. This sheet pile is used to form a sheet pile wall by sequentially driving it into the soil with a pile driver. In this case, each sheet pile is section-aligned and integrated with each other,
In order for a sheet pile wall to properly demonstrate its design strength, the verticality of the sheet pile wall must be maintained accurately, and the wall axis must be maintained in a straight line. For this reason, guide frames are installed on the ground that extend in the driving direction so as to sandwich both sides of the sheet pile to prevent the wall axis from bending. Conventionally, the guide frame has been constructed by pouring concrete along the entire sheet pile wall, or by moving and installing a portable guide frame as construction progresses.

〔problem〕

However, in this conventional technology, since the pile driving machine and the guiding frame are equipped completely separately, it is difficult to maintain the verticality of the sheet pile, and the sheet pile is likely to tilt during driving. There was an inconvenience.
Once a slope occurs, it is difficult to correct it, resulting in a decrease in construction accuracy and a time-consuming process.

Furthermore, the conventional method requires equipment such as a large crane to move the guide frame and the pile driver, which has the disadvantage of poor work efficiency.

[Purpose of the invention]

The present invention has been developed in view of the above-mentioned drawbacks of the prior art, and allows for continuous driving with good accuracy without tilting the sheet pile, and also allows for easy movement of the entire device according to the work process. The purpose is to provide a pile driver that can.

[Means for solving problems]

Therefore, the present invention includes a set of left and right guide frames, which guides the driving direction of sheet piles, a movable frame that engages with the guide frame so as to move forward and backward in the driving direction, and slides the movable frame. and a pile driving machine body installed on the movable frame, and a movable wheel is provided between each of the guide frames at the rear end of the guide frame, and a hydraulic pressure for supporting the movable wheel is provided. A cylinder is installed on the guiding frame side, thereby achieving the above object.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 5.

FIG. 1 is a schematic perspective view showing a pile driver according to the present invention. In the figure, a guide frame 3, which is made up of a pair of left and right guide frames, H-beams 1 and 2, installed parallel to each other, is positioned in the driving direction of the sheet piles 4, 4, ... on the ground (diagonally in the upper right corner of Figure 1). direction).
This guide frame 3 is for driving the sheet pile 4 correctly in a straight line by sandwiching the sheet pile 4 from the left and right sides. The H-shaped steels 1, 2 are reinforced at predetermined locations by reinforcing members 5, 5, .

The front interval changing means 6 is interposed between a slide frame 10 having guide plates 8 and 9 disposed vertically in parallel and H-shaped steels 1 and 2, and is arranged between the H-shaped steel 2 and the H-shaped steel 1.
and a hydraulic jack 11 (see Fig. 2) that moves the machine in the left-right direction. The H-shaped steel 2 has guide plates 8 and 9.
It is designed to slide between the two. Further, the distance changing means 7 on the rear end side includes a U-shaped arm member 12 fixed to the rear end of the H-shaped steel 1, and a lower end of the arm member 12 fixed to the rear end of the H-shaped steel 1.
The rear end is fixed to the arm member 12, and the upper end thereof is fixed to the arm member 12.
The suspension member 1 is slidably fitted into the horizontal portion 13 of the
4, the tip of the arm member 12 and the suspension member 1
A hydraulic jack 15 is interposed between the lower end of the H-shaped steel 2 and the lower end of the H-shaped steel 2 and moves the H-shaped steel 1 in the left-right direction. By synchronously operating the hydraulic jacks 11 and 15, the distance between the H-beams 1 and 2 can be changed while maintaining their parallelism. The distance between the H-shaped steels 1 and 2 is changed depending on the thickness of the sheet pile 4.

On the lower surface side of the horizontal portion 13 of the arm member 12,
As shown in FIG. 5, the hanging member 14 and the rising portion 12
A hydraulic cylinder 70 is fixed between the hydraulic cylinder 70 and the lower end of the hydraulic cylinder 70, and a movable wheel 71 is installed to be able to move up and down. The movable wheel 71 is adapted to come into contact with the upper end of the sheet pile 4 and be pressed down by the extension action of the hydraulic cylinder 70 when the entire pile driving machine is moved in the driving direction. At this time, the rear end of the guide frame 3 leaves the ground due to the reaction force from the sheet pile 4, so if the front end of the pile driver is pulled with a rope or the like, the movable wheel 71 rotates on the sheet pile 4 and easily Pile driver can be moved and installed.

On the guide frame 3, a movable frame 16 is mounted on the H-beams 1 and 2.
The pile driver body is mounted on the movable frame 16 so as to be slidable in the longitudinal direction. The movable frame 16 includes a set of left and right frame members 1.
8 and 19, and the left end of the pedestal member 18 and the right end of the pedestal member 19 engage in a hook shape with the left and right ends of the horizontal flanges 20 and 21 of the H-shaped steels 1 and 2, respectively (see Fig. 2). , the frame members 18 and 19 also move integrally with the movement of the H-shaped steels 1 and 2 to the left and right. These pedestal members 18 and 19 are combined on the upper side of the pedestal members 18 and 19 by a U-shaped flat substrate 22 that is movable in the left and right directions.

The right side frame member 19 and the H-shaped steel 2 are equipped with sliding means for the movable frame 16.
This sliding means consists of a moving part 24 provided at the front end of the frame member 19, and a chain 26 disposed along the longitudinal direction of the upper end of the web 25 inside the H-shaped steel 2.

Here, the moving section 24 will be described in detail.The moving section 24 is rotated by an oil motor 28 and a base plate 27 that is fixed to the front end of the gantry member 19 and extends forward along the horizontal flange 21. A gear mechanism 29 (see FIG. 2) is provided. The output shaft 30 of this gear mechanism 29 passes between the H-shaped steels 1 and 2 and extends vertically to the horizontal flange 2.
A chain gear 32 that protrudes from the rear surface side of the wheels 0 and 21 and engages with the chain 26 at its tip is provided. The chain 26 is stretched by bolts 34, 34 (one not shown) installed in support members 33, 33 (one is shown in FIG. 2) provided at the front and rear ends of the H-shaped steel 2. At the same time, the lower side of the chain 26 is supported by the support plate 35. When the oil motor 28 is operated to rotate the chain gear 32, the movable pedestal 16 receives a reaction force from the chain 26, thereby moving in the front and back direction of the guide frame 3.

The pile driver main body 17 mounted on the movable frame 16 is
a base plate 22 that engages slide grooves 36 and 37 provided at the upper ends of each of the gantry members 18 and 19, respectively, in a left-right direction;
The pile driver main body part 38 is equipped on the upper side of the pile driver 2 so as to be rotatable in the front and rear directions. This pile driver main body part 38
is a bottom plate 39, side walls 40, 41 vertically provided on both left and right sides of this bottom plate 39, and these side walls 40,
Reinforcement pipes 42 and 4 installed horizontally in two places above between 41 and 41
3 and the side wall 4 via the intervening members 44 and 45.
A pair of left and right lifting hydraulic cylinders 46, 47 attached to
It consists of a U-shaped chuck portion 48 suspended from the lower ends of the chuck portions 6 and 47, and a fixed chuck 49 and a movable chuck 50 provided opposite to each other inside the tip portion of the chuck portion 48. Projections 51 and 52 are implanted on the left and right ends of the outside of the substrate 22 of the mount members 18 and 19, and projections 53 and 54 are implanted at the left and right ends of the substrate 22 opposite to the projections 51 and 52, respectively. Of these, protrusions 51 and 53 on the side of the frame member 18 are bolted.

Therefore, when the H-shaped steel 1 moves to the left or right with respect to the H-shaped steel 2, the right half of the board 22 slides on the frame member 19. still,
It is also possible to bolt the protrusions 52 and 54 and slide the left half of the board 22 on the pedestal member 18. The slide grooves 36, 37
is formed into a tab tail shape so that the movable pedestal 16 and the substrate 22 can be reliably engaged.

A undulating direction rotation means 55 is provided between the base plate 22 and the bottom plate 39 as a means for adjusting the press-fitting direction, so that the pile driver main body 38 can be tilted back and forth with respect to the driving direction of the sheet pile 4. It has become. That is, as shown in FIGS. 2 and 4, both left and right sides of the rear end portion are supported under the bottom plate 39 by bearing mechanisms 56 and 57 so as to be rotatable up and down in the front and back direction. At the front end of the bottom plate 39, a threaded rod 56 embedded in the base plate 22 is inserted through a hole 57 and protrudes upward, and an adjustment nut 58 is screwed onto the lower surface side of the base plate 22 of the screw rod 56. ing. By turning this adjustment nut 58, the inclination angle of the pile driver main body 38 can be adjusted. Thereby, the press-fitting normal line can be changed, such as by adjusting the direction in which the sheet pile 4 is pressed into the pile driver main body 38 to prevent the sheet pile 4 from tilting in the driving direction. A retaining nut 59 of the bottom plate 39 is screwed into the upper end of the threaded rod 56. Further, a reinforcing member 60 is provided between the bottom plate 39 and the side wall 40.
is fixed.

The lifting cylinders 46 and 47 are configured to move up and down in synchronization with each other to move the chuck portion 48 up and down. The fixed chuck 49 and the movable chuck 50 are formed into a disk shape with a vertical surface, and the fixed chuck 49 is fixed to the inside of the rear end of the left arm 48A of the chuck portion 48,
0 is installed inside the rear end of the right arm 48B of the chuck portion 48 so as to be movable in the left-right direction by a hydraulic cylinder 61. The fixed chuck 49 and the movable chuck 50 are provided facing each other parallel to the driving direction of the sheet pile 4, and the moving operation of the movable chuck 50 presses and clamps the sheet pile 4 in its thickness direction. I'm starting to be able to do it.

An engaging member 62 having hook-shaped bent portions at the left and right ends is fixed to the front side of the chuck portion 48, and this engaging member 62 connects the bottom plate 39 and the reinforcing tube 4.
It is fitted into a guide plate 63 fixed between the guide plate 2 and the guide plate 63 so as to be slidable in the vertical direction. As a result, the chuck portion 4 can be
The vertical movement of 8 is ensured.

The pile driver main body 38 is mounted on the guide frame 3 facing backward with respect to the direction of movement of the entire apparatus. This allows the sheet piles to be driven continuously. Further, the fixed chuck 49 and the movable chuck 50 are installed so as to protrude rearward from the side walls 40 and 41, so that after driving one sheet pile 4, the next sheet pile for driving is placed next to the sheet pile 4. 4
When suspending the pile driver, the back and forth movement of the pile driver main body 16 is reduced. A hydraulic operating section 64 is provided on the front side of the side wall 41.

The center side edges of the frame members 18 and 19 are the H-shaped steel 1,
It is located outside the center side edge of 2. The substrate 22 and the bottom plate 39 have a square groove 65 and a trapezoidal groove 66, respectively.
is engraved so that the sheet pile 4 can be inserted loosely. The sizes of these rectangular grooves 65 and trapezoidal grooves 66 and the spacing between the fixed chuck 49 and the movable chuck 50 are such that even if the spacing between the H-beams 1 and 2 is changed, they will not come into contact with the base plate 22 and the bottom plate 39. It is formed in a size that allows the sheet pile 4 to be gently held between the guide frame 3. The sheet pile contact surface 49A of the fixed chuck 49 is located in the same vertical plane as the inner end surface 20A of the horizontal flange 20 of the H-shaped steel 1.

In addition, the hydraulic jacks 11 and 15, the oil motor 28, the lifting hydraulic cylinders 46 and 47, and the sheet pile 4
The clamping hydraulic cylinders 61 are each connected to a hydraulic power source (not shown), and are operated by lever operation of a hydraulic operating section 64.

Next, the overall operation of the above embodiment will be explained. For example, concrete sheet piles are used as the sheet piles. First, place the initial sheet pile 4A at the top position of the driving line where the sheet pile wall is to be formed, paying attention to the perpendicularity and wall axis.
Enter.

Subsequently, the distance between the H-shaped steels 1 and 2 is opened to a thickness greater than the thickness of the sheet pile 4, and the entire pile driver is lifted up with a rope, and the rising portion 12A of the arm member 12 is
and the hanging member 14 are installed so as to sandwich the above-ground protrusion of the initial sheet pile 4A. At this time, the rising part 1
2A is brought into contact with the right side of the sheet pile 4 in Fig. 1, and the H-shaped steel 2 is aligned with the driving direction. Subsequently, the spacing changing means 6 and 7 are operated so that the hanging member 14 comes into contact with the left side of the sheet pile 4 with the spacing between the H-shaped steels 1 and 2 interposed therebetween. At this time, since the H-shaped steels 1 and 2 move in parallel, the setting of the guiding frame 3 according to the thickness of the sheet pile 4 is completed. Fixing chuck 49 of the pile driver main body 38
and the central edge of the H-shaped steel 1 are flush with each other in the vertical plane.

Next, after driving the oil motor 28 and advancing the pile driver main body 16 forward, the sheet pile 4 for the next driving is driven.
and insert it into the guide frame 3 while aligning the section with the front side of the initial sheet pile 4A.
At this time, the wall axis formed by the two sheet piles 4A, 4 is guided by the guide frame 3 and becomes a straight line. Further, the left side of the sheet pile 4 is in contact with the fixed chuck 49. The oil motor 28 is driven again to move the pile driver main body 17 backward to hold the sheet pile 4 in the chuck part 48, and the pile driver main body 1
7 and the rotation mechanism 55 to align the normal line of press-fitting of the sheet pile 4 with the line of action of the fixed chuck 49 and the movable chuck 50. This rotation mechanism 5
5 will be fixed from now on, and will be adjusted as necessary, such as when the press-fitting normal line is inclined due to earth pressure or the like.
Also, when the oil motor 28 is stopped, the pile driver main body 17
positioning is performed.

After the setting of the pile driver main body 17 is completed, the press-fitting operation of the sheet pile 4 begins. That is, actuate the hydraulic cylinder 61,
The movable chuck 50 is moved toward the fixed chuck 49 to clamp the sheet pile 4 with a predetermined pressing force (see arrow A in FIG. 3).

Next, the lifting hydraulic cylinders 46 and 47 are lowered, and the sheet pile 4 held by the chuck portion 48 is press-fitted into the ground (see arrows B and H in FIG. 3). The movable chuck 50 is moved to the right to stop holding the sheet pile 4 (see arrow C in FIG. 3). The lifting hydraulic cylinders 46 and 47 are raised to return the chuck portion 48 to its original position (see arrows d and d in FIG. 3).

Thereafter, the above-described operation is repeated until the sheet pile 4 is press-fitted into the ground for a predetermined length. The press-in reaction force is borne by the weight of the pile driver main body 17 and the guiding frame 3.

This pile driving work of the sheet pile 4 is performed near the ground due to static pressure, so there is no vibration or noise, and there is no adverse effect on the surrounding environment, and the sheet pile 4 is not damaged due to vibration or buckling. In addition, fixed chuck 4
Since the guide frame 9 moves in a vertical plane flush with the edge of the guiding frame 3, the verticality of the sheet pile can be maintained accurately. After driving the sheet pile 4, the oil motor 28 is activated to move the pile driver main body 17 forward and drive the sheet pile 4 for the next driving.
The pile driver body 17 is set and the sheet pile 4 is press-fitted in the same manner as described above.

In this way, the sheet piles 4 are press-fitted one after another until they reach the front end of the guide frame 3, and then the entire pile driver is inserted into the guide frame 3.
Move by the length of . At this time, if the rising portion 12A of the arm member 12 and the hanging member 14 sandwich the sheet pile 4 at the front end of the sheet pile wall that has been completely driven, the pile driver can be easily installed in the driving direction of the sheet pile 4. . The above-mentioned movement of the pile driver and press-fitting of the sheet piles may be repeated in sequence. In addition, when moving the pile driver, the work will be made easier if the interval between the guide frames 3 is made wider than the thickness of the arrow 4. Further, the sheet pile can be easily pulled out by operating the pile driver described above in reverse.

According to this embodiment, since the guide frame 3 is provided to guide the driving direction of the sheet pile 4, the wall axis of the sheet pile wall can be formed on a straight line, and the pile driver main body 17 is placed on the guide frame 3. Since the guide frame 3 can be moved forward and backward, the guide frame 3 can be moved and the pile driver main body 17 can be moved at the same time, and the sheet pile 4 can be continuously moved while the pile driver main body 17 is moved back and forth on the guide frame 3. This greatly improves work efficiency.

In addition, since the sliding movement of the pile driver main body 17 is performed by the chain 26 and the chain gear 32, it is possible to perform forward and backward movement reliably with a simple configuration, and the guide frame 3 can be moved over a wide range. It can be moved. Furthermore, since the sheet piles are press-fitted using static pressure, there is less negative impact on the surrounding environment and damage to the sheet piles, and the press-in normal line can be easily changed depending on driving conditions, earth pressure, etc. Furthermore, since the fixed chuck 49 moves in a vertical plane extending from the edge of the guide frame, the sheet pile 4 is supported at two locations above and below the guide frame 3 and the chuck part 48 of the pile driver main body 17, so that driving The verticality of the sheet piles 4 inside can be maintained accurately. In addition, since the interval between the guide frames 3 is configured to be changeable, the thickness of the sheet piles 4 can be selected, and versatility is great. Further, the fixing chuck 49 is always positioned above the edge of the guide frame regardless of the change in the interval between the guide frames 3, so that the installation work is easy. In addition, when moving the pile driver, the movable wheel 71 is pushed down to the upper end of the sheet pile 4 and the rear end of the pile driver is lifted, which requires less traction force and allows for quick movement. Can be installed.

In the above embodiment, the guiding frame 3 is made of H-shaped steel, but it may also be made of I-shaped steel, plate, etc.
The forward and backward movement of the pile driver main body 17 may be performed by a hydraulic cylinder, and the moving platform 16 has a U-shaped base plate, one end of the base plate is engaged with the horizontal flange of one H-shaped steel, and the other end is engaged with the horizontal flange of one H-shaped steel. It may be simply slidably mounted on the horizontal flange of the other H-shaped steel, or when the right mount member 19 and the board are bolted together, the left side may be a movable chuck and the right side may be a fixed chuck. When using H-shaped steel piles, both the left and right chucks are movable, and when driving the sheet piles 4 in reverse directions, the left and right movable chucks may be used alternately with one fixed and the other movable. In addition to providing the movable wheels that can be pushed out on the horizontal lower surface of the arm member, one wheel may be provided at each rear end of each H-shaped steel, or one at the front and rear end of each H-shaped steel. It may be provided.

〔Effect of the invention〕

Since the present invention is configured and functions as described above,
According to this, since the guide frame is equipped with the pile driver main body, the guide frame and the pile driver main body can be quickly installed at the pile driving site, and the sheet pile is equipped with the guide frame and the pile driver main body. Since it is supported in two places above and below the chuck part, the verticality of the sheet pile can be maintained accurately, and since the main body of this pile driver is equipped to move forward and backward, it is possible to perform pile driving work continuously. Since a removable ring is provided at the rear end of the guiding frame, the upper end of the pile once driven can be used to quickly and easily move to the next piling location by connecting the guiding frame and the pile driving machine body. It is possible to provide an unprecedented and excellent pile driver that can be relocated to any location.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view showing a pile driver according to the present invention, Fig. 2 is a longitudinal sectional view taken along the - line in Fig. 1, and Fig. 3 is a diagram of a chuck section provided on the main body of the pile driver. FIG. 4 is an explanatory diagram of the operation of the rotating means of the main body of the pile driver, and FIG. 5 is a schematic diagram showing part A in FIG. 1. 1, 2...H-shaped steel, 3...Guiding frame, 4,4A...
Sheet pile, 16...Movable frame, 17...Pile driver main body,
24...Movement part forming the main part of means for sliding movement, 70...Hydraulic cylinder, 71...Movement wheel.

Claims (1)

[Claims] 1. A guide frame comprising a set of left and right guide frames and guiding the driving direction of the sheet pile, a movable frame engaged with the guide frame so as to be movable forward and backward in the driving direction, and means for sliding the movable frame; a pile driving machine body installed on the movable frame, a movable wheel is provided between the guide frames at the rear end of the guide frame, and a hydraulic cylinder supporting the movable wheel is attached to the guide frame. A pile driver characterized by being equipped on the side.