JPH0339128B2 - - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a pile press-in machine, and particularly to a pile press-in machine for press-fitting a foundation pile into a site where underground pipes, such as sewer pipes, are to be laid prior to laying the pipes.

Technical background of the invention and its problems Traditionally, when laying underground pipes such as sewage pipes, prior to laying the pipe, earth retaining walls facing left and right are constructed in the ground, and the soil between the earth retaining walls is removed. Dig down to the required depth,
A construction method in which chestnut stones, etc. are laid out at the bottom of the excavated trench, pounded and hardened with a tamper, concrete is poured as a foundation, a pipe is laid on top of the foundation, and the excavated trench is backfilled with soil. It is being carried out in However, after backfilling, until the backfill soil compacts and settles into the ground, uneven settlement often occurs in underground pipes for various reasons. If uneven settling occurs, the slope of the pipes may be more deviated than originally intended, or the connections between pipes may become poor, causing fluid flowing through the pipes to leak. This tendency is particularly severe when a new underground pipe is installed by connecting it to an existing manhole, and can not only disrupt the slope of the pipe joint but also destroy the joint. This is because while the existing manhole has already settled, the newly installed pipe will begin to settle, resulting in a substantially larger settlement of the pipe. The reality is that no effective measures have been established to easily solve this problem.

The problem of uneven settlement of pipes may be solved by not only forming the foundation at the bottom of the pipe trench by using the above-mentioned measures, but also by driving piles and reinforcing the foundation. However, there are problems in implementing such an idea with conventionally known pile driving machines. It is most effective to drive piles for the foundation of underground pipes at the joints of the pipes, and these places are usually relatively far apart, approximately 2.4 m apart, and the piles are placed at the joints of the pipes. The distribution of piles required at the corresponding location varies depending on the pipe diameter and the number of rows of pipes laid, and a pile driving machine that can respond to this immediately uses a pile driving head with a pile driving load loading means that can be used in all four directions, front, rear, left and right. It must be able to move freely over a wide range of areas. Conventionally known pile drivers that satisfy this condition have the same structure as earthmoving machines such as power shovels, except that the front attachment as a working device is a pile driving head with a means for applying pile driving loads. To move the head to the required location, it relies on a movement mechanism with a structure similar to that of the front attachment of earth-moving machines such as power shovels. It is not always quick and easy because it involves a combination of back and forth movement of the traveling device. In particular, foundation piles for pipe laying require only a small loading force, and thinning materials produced by forestry are sufficient, and conventionally known pile drivers are too large in size and maneuverability for such pile materials. . In addition, it is impossible to move the machine platform by running on tracks etc. in the trench dug between the left and right opposing earth retaining walls because the struts will get in the way, and pile driving is not possible due to manual work. cannot be done accurately. Therefore, conventionally known pile drivers cannot simply solve the problem of uneven settling of pipes.

OBJECT OF THE INVENTION Therefore, the present invention aims to provide a pile press-in machine that guarantees a simple solution to the problem of uneven settlement of underground pipes.

Structure of the Invention The pile press-in machine of the present invention is a pile press-in machine that press-fits foundation piles into the installation site of underground pipes prior to laying underground pipes, and is a pile press-in machine that presses foundation piles into the installation site between underground retaining walls and earth retaining walls placed in the ground. In the trench dug into the earth retaining wall, a first frame having a clamping means releasably clamped in a tension manner between the opposing inner surfaces of the earth retaining wall is placed on the first frame. A second frame that can move left and right, and a pedestal that can move up and down with respect to the first frame are provided, and a third frame that can move back and forth on the second frame is provided, and a third frame that can be moved back and forth on the frame is attached to the pedestal. It is characterized in that the third frame is provided with a grounding shoe that can be relatively driven back and forth between the two, and a chuck that can be driven up and down that grips the press-fitted pile on the third frame.

Effects of the Invention In the present invention, the clamping means is inserted between the opposing inner surfaces of the earth retaining walls in a groove dug between the left and right earth retaining walls that are formed in the ground. When the first frame is tightened and tightened, the first frame is integrally restrained with respect to the earth retaining wall. Therefore, under this condition, the pile can be used to lay an underground pipe by grasping the press-fitted pile with a chuck, pushing it down, then pushing it down, opening the chuck, raising it, grasping the pile again, and pushing it down. Prior to this, it can be press-fitted into the ground in the trench.

The chuck is provided on a third frame that can move back and forth on the second frame, and the second frame can move left and right on the first frame, so it corresponds to the pipe diameter and the number of rows of pipes laid. The back-and-forth movement of the chuck required to obtain the desired pile distribution can be performed by the back-and-forth movement of the third frame, and the left-right movement of the chuck can be performed by the left-right movement of the second frame. That is, according to the present invention, the vertical and horizontal feeds necessary for the chuck can be directly performed by the linear movement of the second and third frames.

In the present invention, the first frame is provided with a pedestal that can move up and down with respect to the frame, and the pedestal is equipped with a grounding shoe that can be moved back and forth relative to the first frame, so that the pile press-in machine of the present invention can be installed underground. In order to move it to a location that corresponds to the joint of the buried pipe, the relative longitudinal movable span between the above-mentioned pedestal and the grounding shoe should be determined in advance in the design.
Lift the pedestal and ground shoe using the first frame, which has been integrally restrained as described above, as a support between the left and right opposing earth retaining walls, and move the ground shoe forward with respect to the mount. Alternatively, after moving the grounding shoe backwards and pushing down the grounding shoe and the pedestal against the first frame at the moved position to bring the grounding shoe into contact with the ground, the restraint of the first frame is released by pressing and releasing the clamping means. This can be achieved in such a way that the assembly of the first, second and third frames is displaced to the side by touching and driving the trestle to the side to which the grounding shoe has moved. In this case, if the lifting height of the pedestal and grounding shoe is determined in advance,
Move the frame and grounding shoe over the retaining wall struts without being obstructed by them;
The pile press-in machine of the present invention can be moved forward or backward within the dug-out trench between the left and right opposing earth retaining walls along the trench without any trouble.

Effects of the Invention As described above, according to the present invention, in order to move the pile press-in machine to a location immediately corresponding to the joint of underground pipes, it is possible to move the pile press-in machine to a location immediately corresponding to the joint of underground pipes, and to move the pile press-in machine to a location immediately corresponding to the joint portion of underground pipes. The back and forth movement and left and right movement of the chuck required for press-fitting piles in a distribution that corresponds to the pipe diameter and the number of rows of pipes to be laid can be performed directly by straight movement, so the chuck can be moved to the required location. This can be done quickly and easily using the minimum necessary drive means in terms of scale and mobility, such as a hydraulic cylinder plunger device, and as a result of the pile press-in machine being able to move back and forth within the trench,
Pile press-in construction can be performed accurately with preliminary work.

Thus, according to the present invention, it is possible to ensure that the problem of uneven settlement of underground pipes is simply solved.

In the present invention, the first frame is integrally restrained with respect to the earth retaining walls by clamping the clamping means in a tension-like manner between the opposing inner surfaces of the earth retaining walls facing left and right. Since the retaining wall is installed below the ground line, the pile press-in machine of the present invention can be firmly and stably fixed to the retaining wall accordingly.

Embodiments of the Invention Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, 1 is the first frame, 2 is the second frame, and 3 is the third frame. A pressing member 4 driven by a hydraulic cylinder/plunger device (not shown), which is pressed in a stretched manner over a period of time, is installed at each of the left and right ends of the front and rear ends of the frame 1. The frame 2 is mounted on the first frame 1 so as to be movable left and right (up and down in Figure 1), and the third frame 3 is mounted on the second frame 2 so as to be movable back and forth (left and right in Figure 1). Load it to get it. The movements of the second frame 2 and the third frame 3 in the required directions are carried out by appropriate means, such as hydraulic cylinders, etc.
This may be done using a plunger device (not shown). The third frame 3 is equipped with a chuck 5 for gripping the press-fitted pile a. The chuck 5 has one end connected to the third
Connect to the frame 3 of the frame 3, and connect the other end to the chuck 5
It is driven up and down by a hydraulic cylinder/plunger device 6 which is pivotally connected to the main body. 7,7
is a guide rail that guides the vertical movement of the chuck 5, and the chuck 5 may be connected to the guide rails 7, 7 by sliding the main body of the chuck 5 with a sliding guide groove and a sliding body fitted therein. Further, the first frame 1 is provided at its front and rear ends with frames 9, 9 extending in the front-rear direction and driven up and down with respect to the first frame 1 by hydraulic cylinder plunger devices 8, 8, 8, 8. Hydraulic cylinders and mounts 9,9
A grounding shoe 1 that is long in the front and back direction and is driven back and forth relative to the frame 9 by the plunger device 10
Equip 1 and 11. The hydraulic cylinder/plunger devices 8, 8, 8, 8 are fixed at one end to the first frame 1, and pivotally connected to the frames 9, 9 at the other end.
0 is fixed to the frame 9 at one end, and pivotally connected to the grounding shoe 11 at the other end. The grounding shoe 11 can be attached to the pedestal 9 by a pair of sliding fittings.

Press-fitting of pile a by the pile press-fitting machine of the present invention having the above-mentioned configuration is carried out as follows.

A pile press-in machine is placed in the groove C dug between the left and right retaining walls A and B, and the height of the first frame 1 is adjusted by operating the hydraulic cylinder plunger devices 8, 8, 8, 8. In other words, the height of the chuck 5 is set to an appropriate degree, and if necessary, the direction of the chuck 5 is set to a required vertical degree, and the pressing body 4,
4, 4, 4 are pressed against the retaining walls A and B. Here, the pile press-in machine is integrally restrained between the earth retaining walls A and B under the tension-like pressing of the pressing bodies 4, 4, 4, 4. That is, the earth retaining walls A and B serve as reaction force anchors for press-fitting the pile a.

Under this restrained state, the chuck 5 is adjusted to the required position by the left and right movement of the second frame 2 and/or the back and forth movement of the third frame 3, and the peg a is grasped at the adjusted position, and the hydraulic cylinder plunger device Pile a is press-fitted into the ground by pushing down chuck 5 with step 6. The press-fitting of the pile a is carried out progressively by repeating the following operations: lifting the chuck 5 open, holding the pile a in the raised position, and pushing it down again.

When the press-fitting of the pile a into a certain required area is completed, the pile press-in machine is moved to the next pile press-fitting area. This movement may be performed in the following manner.

First, under the condition that the pile press-in machine is restrained by the pressing of the pressing bodies 4, 4, 4, 4, the pedestal 9,
9, and the grounding shoes 11, 11 are lifted up, and then the hydraulic cylinder/plunger device 10 is used to push the grounding shoes 11, 11 forward or backward relative to the mounts 9, 9, and in the pushed position, the hydraulic cylinder/plunger device 8 , 8, 8, 8 push down the combination of the grounding shoe 11 and the frame 9 until the grounding shoe 11 lands on the ground, and then the pressing body 4,
4, 4, 4 are released to free the first frame 1, and the hydraulic cylinder/plunger device 10 drives the frames 9, 9 toward the pushing side of the ground shoes 11, 11. As the frames 9, 9 are driven, the first, second and third frames 1, 2, 3
The combination body is moved to the ipsilateral side.

If the grounding shoes 11, 11 are set to appropriate lengths in advance, the movement of the pile press-in machine to the next pile press-in construction site is completed with one step of the movement described above. If the lengths of the grounding shoes 11, 11 are short, the required dislocation may be performed by repeating the predetermined movement.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the present invention, and FIG.
3 is a side view of the chuck and the hydraulic cylinder/plunger device that moves it up and down; FIG. 4 is a vertical sectional view of the pedestal and ground shoe assembly in the same embodiment; The figure is a sectional view taken along the - line in FIG. 4. 1 is the first frame, 2 is the second frame, 3
is the third frame, 4 is the pressing body, 5 is the chuck,
6, 8, and 10 are hydraulic cylinder/plunger devices, 9 is a pedestal, and 11 is a grounding shoe.

Claims (1)

[Claims] 1. A pile press-in machine that presses foundation piles into the installation site prior to laying underground pipes, into a trench dug between the left and right earth retaining walls placed in the ground. A second frame movable from side to side on the first frame is attached to the first frame having compression means releasably compressed in a stretched manner between the opposing inner surfaces of the earth retaining wall. and a mount that can move up and down with respect to the first frame, a third frame that can move back and forth on the second frame, and a third frame that can move back and forth relative to the second frame. A pile press-in machine, characterized in that the third frame is provided with a chuck that can be driven up and down to grasp a pile to be press-fitted.