JPS60238518A - Ground penetrator - Google Patents

Abstract

PURPOSE:To exactly penetrate a pile into the ground by providing a vertically movable penetrating blade to be positioned for its tip downwards from the lower end of a pile when a body is grasped by a chuck along the pile and the pile is penetrated into the body. CONSTITUTION:Existing piles (a) are grasped by clamps 10, and a penetrator 5 together with a pile 4 to be penetrated is grasped by the chuck 3 of a static load type pile constructor 2. In this case, the tip of a penetrating blad 7 is positioned downwards from the lower end of the pile 4. A static pushing load is applied to the chuck 3, the pile 4 is penetrated into the ground, and the blade 7 is pushed down in relation to the pile 4 by an oil-pressure cylinder plunger device 8. The pile 4 can thus be exactly penetrated with the aid of the preceding penetration of the blade 7 into the ground.

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a ground penetrating machine, particularly a pile press-in machine, and more specifically, a chuck grips a pile to be press-fitted and press-fits the pile into the ground by applying a static push-down load. The present invention relates to a ground penetrating machine that is used in combination with a pile press-in machine (hereinafter referred to as a static load type pie/1/construction machine).

Technical background of the invention and its problems Static load type Bi) L7 construction machine is noiseless and vibrationless
can be constructed, and there is no damage or deformation of the pile head yet.

However, there was a problem in that a push-down load was applied to the pile through a chuck that gripped it at an above-ground location, or in other words, a press-fit load was applied to the pile at an above-ground location.
Pi / I / When performing a full press-in, the press-fit resistance is the addition of the pile tip resistance, circumferential surface resistance, and section resistance. The loss of force due to the resistance is large, and it is difficult or impossible for the pile tip A/L/constructing machine to press in the pile if there is an obstacle layer such as boulders or gravel in the ground. If the pile is forced into the pile, it may cause deformation or damage to the tip of the pile, or the directionality of the biμ may deteriorate.
The pile collapses, the section resistance increases, etc., and subsequent pile construction becomes impossible.

However, the reality is that no effective countermeasure has yet been established to simply solve the problem with the front legs of static load-tun type pie/L/construction machines.

Conventionally, in pile construction using a static load type pile construction machine, the method of assisting the press-in of the pile has relied on excavation using jet water or excavation using an Arnu auger. According to this, the ground is excavated at the tip of the pile at the same time as the pile is press-fitted, that is, the digging means is additionally installed at the tip of the pile, so the effect of the pile press-in itself is improved, but the former In the latter case, the hole drilled by the auger is too large, and it is difficult to keep the pile firmly in place compared to the case of independent pile press-in construction without such additional auxiliary means. It is difficult to press-fit, and in both cases, the use of the additional press-fitting auxiliary means by excavation inevitably increases the size of the entire static load type pile construction machine considerably. Thus, the above-mentioned problems of static load type pile construction machines cannot be easily solved by conventionally known construction methods.

OBJECT OF THE INVENTION Therefore, the present invention aims to solve this problem in a simple manner.

Furthermore, the present invention is applicable not only to pile construction with specifications that allow the operation to occur concurrently with pile construction, but also only when necessary during bi/1/construction, i.e., at locations where there are obstruction layers such as boulders or gravel in the ground. It is also possible to construct piles in such a way that the pipe is operated while the pile tip breaks through, and is pulled out to the ground and left on standby at other times.Moreover, the next pipe must be pulled out and reinserted during press-in to restart its operation. The purpose of the present invention is to provide a ground penetrating machine that can be easily and easily operated.

Structure of the Invention The ground penetrating machine of the present invention can be used in combination with a static load hole pile construction machine (i.e., a pile press-in machine that grips the pile to be press-fitted with a chuck and press-fits it into the ground by applying a static push-down load). A ground penetrating machine that penetrates into the ground prior to the pile to be press-fitted, which includes as a component a main body that is gripped by the chuck of the pile press-fit machine along with the pile to be press-fitted, It is characterized by being equipped with a ground penetrating blade that can move up and down and whose tip is positioned below the lower end of the press-in pile during pile press-fitting, and a drive machine that drives the blade.

Effect of the Invention In the present invention, when the main body of the penetrating machine is gripped by the chuck of the static load type pile construction machine along with the pile to be press-fitted, the main body is integrated with the pile to be press-fitted. Therefore, this integration is performed so that the tip of the ground penetrating blade is located below the lower end of the pile to be press-fitted, and in this state of integration, a silent pressing load is applied to the chuck to press-fit the pile to be press-fitted. By pressing down the blade against the press-fit pile using a ground-penetrating grade drive machine,
The blade can be penetrated into the ground prior to the pile being press-fitted. The preliminary penetration of the blade into the ground can be advanced by repeating the operation of returning the blade to its original position with a drive machine and pushing it down again when it reaches its limit of pushing down against the press-fit pile.

The advance penetration of the blade into the ground assists in the pile press-in.

Pre-penetration of the above grade of ground is performed concurrently with the pile construction by keeping the grip of the penetrating machine body with the chuck, and when the chuck is released and the penetrating machine is pulled out to the ground, the pile In other words, the operation of the inventive penetration machine will be suspended.

Preliminary penetration of the ground by the blade can be resumed by leaving the pile in the middle of construction and returning the penetrating machine to the ground and resetting it.

Effects of the Invention As described above, according to the present invention, since the support for bi-i press-in is performed by the preliminary penetration of the ground by the front blade, the pile can be press-fitted in the same firm state as when it is press-fitted alone, and According to the construction of the present invention, the equipment required for assisting pile press-in can be smaller in scale than in the past. Therefore, in the present invention, the above-mentioned problems of the static load type bit tvlA machine can be easily solved.

In the present invention, the main body of the pawning machine is gripped by a chuck, so that it can be used not only for pile construction with a specification that allows the ground penetration blade to advance in parallel with this during pile construction, but also for pile construction during pile construction. The ground penetrating blade is operated underground only when necessary, that is, while the pile tip breaks through an obstacle layer such as boulders or gravel in the ground, and at other times, the penetrating machine is pulled out and stands by on the ground. It is also possible to construct piles with specifications such that the piles are installed, and since there is no need to pull out and reinsert the piles that are currently under construction in order to resume operation, it is guaranteed that this process can be carried out simply.

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

One embodiment of the present invention is shown in FIGS. 1 to 8, and 1.
In Figure 2.8, (1) is the static load type pi/l/ which is known per se.
This is a ground penetrating machine used together with the construction machine (2) [Figure 8], and this is the chuck (3) in the static load type pile construction machine (2).
) is provided with a main body (5) that is gripped together with the press-fitted pie μ (4). In this example, the body (5) has a cross-sectional shape that corresponds to a pi/l/+41 cross-sectional shape, but it may have any other suitable shape.

The main body (5) is equipped with a ground penetration grade (7) with a chisel attached to the tip, more preferably a chisel/I/(6) removably attached, and a drive machine that drives the blade (7); For example, hydraulic cylinder plunger device (
8) Equipped with a drive machine such as a fluid pressure drive machine or an electric screw jack. The hydraulic cylinder plunger device (8) has one end connected to the main body (5), and the other end connected to the ground penetrating blade (7).
). +91 +9+ is the above body (5)
The left and right ear portions of the upper half side portion (7a) of the ground penetration grade (7) are fitted into the guide rail yL/f91 +91 with guide rails formed on both left and right sides of the lower end portion of the guide rail yL/f91 +91 so as to be vertically movable. (ltl... is a static load type pile construction machine (2)
It is a clamp.

Other embodiments of the present invention are shown in FIGS. 4 and 5.
, 5, the same reference numerals as in FIGS. 1 to 8 indicate the same parts. The one in Figures 4 and 5 has two hydraulic cylinder plunger devices (8) on the left and right, eliminating the vertical movement guide of the ground penetration grade Ro0) by the guide tray / Iz +91 +91 in Figures 1 to 3. Except for this point, the ground penetrating blade (7) of the embodiment shown in Figs. 1 to 8 is of the type shown in Figs. , 7 may be used.

The pile press-in is assisted by the ground penetrating machine of the present invention on the upper side as follows: Grasp the already press-fit pie /L/(a)... with the clamps (1■...) and hold the pie A/(a). The chuck (3) of the static load type pile construction machine (2) that is freestanding on the
+41 and grab the penetrating machine main body (5) along with it. At this time, the tip of the ground penetrating blade (7) should be positioned below the lower end of the press-fitted bye 1V (41).

Under this condition, a static push-down load is applied to the chuck (3) (
7, press-fit the Pi/I/141 into the ground, and press the ground-penetrating blade (7) down against the pile (4) using the hydraulic cylinder plunger device (8) at the same time as the pile construction or when necessary. If so, the corresponding grade (7
) into the ground assists in the press-in of the pile (4).

If the chuck (3) is opened during construction of the pie # (4) and the penetrating machine (1) is pulled out to the ground, the penetrating machine (1) will be in a non-operating state and only the pie/l/141 will be press-fitted. construction specifications are possible. To resume the press-in assistance of Pi IV+41 by the advance penetration of the ground penetration blade (8), use the penetration machine (
All you have to do is put 1) back into the ground and reset it.

Note that as the static load type biμ construction machine (2), one having the following configuration can be used.

A chuck (3) that grips the press-fitted pie Ivf41 is arranged adjacent to a clamp αυ that grips the low-pressure-fit pile (a), and the chuck (3) also holds the clamp qO1...
It is possible to perform relative up-and-down movement and relative back-and-forth movement at a pitch greater than the pile parallel pitch in the above-mentioned pie/I/(a) parallel direction using appropriate means. ] (g) For...pi/L/(a)
. . . It is designed to be able to horizontally move or turn in a direction that crosses the parallel direction. More preferably, in addition to this configuration, the chuck (3) is rotatably displaceable by more than 180° in directions around its vertical axis. Chuck(
Such required driving or rotational displacement in 3) may be performed by a hydraulic cylinder/plunger device or a hydraulic motor, which are known per se.

In the static load type bi/l/execution machine (2) shown in Fig. 8, (111 is the clamping surface...
) is a hydraulic cylinder/plunger device that drives the chuck (3) up and down relatively, one end of which is connected to the main body of the chuck (3), and the other end is connected to a mass h az that can be rotated horizontally, more preferably pivoted. be combined. The mast α2 is a slide base (131 The slide base (I3
1 is equipped with SAD/V (141) equipped with clamp αG.

In addition to the above-mentioned static load type pile construction machines, there are also static load type pile construction machines that use the dead weight of a static load type biμ construction machine or carry earth augers or similar screw anchors into the ground and use the anchors to absorb the press-in reaction force of the pile. Alternatively, a static load type pie/L'M machine using a winch may be used to apply a static downward load to the pile.

[Brief explanation of drawings]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
Fig. 3 is a cross-sectional view of the bonds shown in Figs. FIG. 7 is a front view showing a modified example of the same, FIG. 7 is a partial vertical side view thereof, and FIG. 8 is a front view showing the manner of use of the penetrating machine of the present invention together with an example of a static load type pipe construction machine to which the present invention is applied. . (1) is a ground penetrating machine, (2) is a static load type pile construction machine, (3) is a chuck, (4) is a press-fit pile, (5) is a main body, (6) is a chize μ, (7) (8) is the hydraulic cylinder/plunger device (driver) (101 is the clamp. Figure 5

Claims (1)

[Claims] ■ It is a ground penetrating machine that is used in conjunction with a pile press-in machine that grips the pile to be press-fitted with a chuck and press-fits it into the ground by applying a static downward load, and penetrates into the ground before the pile to be press-fitted. The pile press-fitting machine includes a main body as a component that is gripped along with the pile to be press-fitted by the chuck, and the main body has a vertical movement that positions the tip below the lower end of the press-fit pile when the pile is press-fitted. A ground penetrating machine characterized by being equipped with a ground penetrating blade and a drive machine for driving the blade.