JP4491369B2 - Pile driving attitude monitoring device and pile driving attitude monitoring method - Google Patents

Description

  The present invention relates to a pile driving attitude monitoring device and a pile driving attitude monitoring method, and in particular, pile driving that ensures a vertical attitude of the pile and enables accurate driving when rotating the pile into the ground. The present invention relates to a posture monitoring device and a pile driving posture monitoring method.

The foundation of a building such as a house is generally formed by excavating the ground, constructing a structure composed of reinforcing bars there, installing a formwork, and then casting concrete.
However, the above-described foundation has a problem in that it takes time for construction and a lot of residual soil is generated outside the site.

  Also, from the viewpoint of recycling, the conventional foundation described above has a problem that it is not easy to separate the concrete portion and the steel material portion, and it is difficult to reuse the steel material.

Therefore, a structure of a building foundation in which a steel pile is driven into the ground and a steel foundation horizontal member is joined to the upper end of the pile has been proposed (for example, see Patent Document 1).
JP 2001-064978 A

When employing the foundation structure disclosed in Patent Document 1, it is preferable to drive the pile into a predetermined position with high accuracy.
For this reason, the technique which measures whether the pile is driven in the appropriate attitude | position is proposed (for example, refer patent document 2).

The steel pipe pile disclosed in Patent Document 2 is provided with a posture measuring device in the cylindrical portion provided on the outside, and by measuring the direction of the axial center of the cylindrical portion, the orientation of the axial center of the steel pipe pile is grasped, It is configured to measure posture.
JP-A-4-353122 (second page, FIG. 1)

However, the posture measuring device disclosed in Patent Document 2 has a problem that it is necessary to attach the device to each steel pipe pile, and it takes time and effort to attach the device.
Moreover, although the deviation | shift of the attitude | position of a pile is shown by the position of irradiation light and reflected light, since the display by light was made on the upper part side of a pile, there existed a problem that it was hard to see for an operator.

  An object of the present invention is to provide a pile driving posture monitoring device and a pile driving posture monitoring method that enable a pile to be driven in a correct posture when performing a driving operation of a pile constituting a foundation of a house or the like. There is to do.

According to the pile driving posture monitoring device according to claim 1, the subject is a pile driving posture monitoring device for ensuring the accuracy of the pile driving posture into the ground. , Having at least two measuring members disposed substantially horizontally with respect to the ground surface, the measuring member being disposed at a position opposite to the irradiating means for irradiating two substantially parallel light beams The two light beams emitted from the respective measuring means intersect each other to form an appropriate range where the pile is positioned, and whether the light beams are received by the light receiving means. Whether or not the pile is in an appropriate position is determined, and when the pile is out of the proper range, a notification means for notifying that the pile is in an inappropriate position is provided. Solved.

  The pile driving attitude monitoring device of the present invention forms an appropriate range in which the pile should be positioned by two light beams irradiated from the measuring member. And, when the pile is rotationally press-fitted into the ground, the pile has an inappropriate posture and has a function of notifying this when it is out of the appropriate range.

  In the pile driving attitude monitoring apparatus of the present invention, the notification means performs notification by lighting or blinking of a lamp or notification by voice. Upon receiving these notifications, it is possible to immediately correct the pile posture.

In addition, since the measuring member is arranged on the support and is unitized, after the predetermined pile driving operation is completed, it is moved to another place and used for another pile driving operation. it can.
Thus, since the apparatus of this invention can be used in common with several piles, it is advantageous in terms of cost.

  The interval between the two light beams can be changed. Therefore, it is possible to cope with various pile diameters.

Further, when the said pile from the proper range is out, the light receiving unit, when the so that to send the detection signal for the pile Chi machine implanting the piles into the ground, when the pile is inclined It is preferable that the posture of the pile can be automatically corrected.

Pile posture is monitored by the following method. That is, the pile driving posture monitoring method of the present invention is a pile driving posture monitoring method for ensuring the accuracy of the pile driving posture into the ground, and the step of standing the pile at the driving position If, around the pile, the step of disposing at least two measuring members are disposed substantially horizontally with respect to the ground surface, the step of the measuring member is received by irradiating substantially two parallel beams of light A step of adjusting the pile to be positioned in a range formed by the two light beams intersecting each other, a step of driving the pile into the ground, and an attitude when the pile is driven into the ground Accordingly , it is determined whether or not the pile is in an appropriate position depending on whether or not the light beam is received by a light receiving means, and when the pile is out of the range, the pile is in an inappropriate position. wherein the notifying means is provided with a step of notifying that.

  As described above, the pile driving attitude monitoring device according to the present invention has a measurement member arranged around the pile, demarcates the appropriate position of the pile with the light beam emitted from the measurement member, and the pile is detached from the appropriate position. It is configured to notify the user of an inappropriate posture when the lamp is turned on or by sound.

  The worker receives the notification, grasps that the posture of the pile has become inappropriate, and can correct the posture of the pile as needed.

  Moreover, the pile driving posture monitoring device is unitized, and when a plurality of piles are driven, it can easily move to the driving position of each pile and can respond to driving of a plurality of piles. .

  In addition, when the pile is removed from the appropriate range limited by the measuring member, the pile is driven into the ground by the driving means for automatically correcting the pile posture, and the pile is always driven in an appropriate posture. It becomes possible.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that members, arrangements, and the like described below do not limit the present invention, and it goes without saying that various modifications can be made in accordance with the spirit of the present invention.

  1 to 5 show an embodiment according to the present invention. FIG. 1 is a perspective view of a pile driving posture monitoring apparatus according to the present embodiment. FIG. 2 is an explanatory view showing a notification means. Is a block diagram showing the configuration of the pile driving posture monitoring device, FIG. 4 is a flowchart showing the flow of processing in the pile driving posture monitoring device and notification means, and FIGS. 5 to 7 are piles using the driving posture monitoring device. It is explanatory drawing which shows the process of monitoring the attitude | position of.

As shown in FIG. 1, the pile driving attitude monitoring device S of the present embodiment includes a measuring member 1 and a support base 2 as a support.
The pile driving posture monitoring device S is a device that monitors the posture of the pile 3 so that the pile 3 is driven vertically when the pile 3 constituting the foundation or the like of the house is driven into the ground.

The pile driving attitude monitoring device S is installed around the pile 3 before driving the pile 3.
Since the support base 2 is detachable with a part of the side 2g shown in FIG. 1 by screws 2h, the support base 2 has a U-shape with the side 2g removed when it is disposed around the pile 3. It is installed so as to fit around the pile 3.
The side 2g is attached again after the installation is finished.

The measuring member 1 includes an infrared sensor 10, a holding unit 20 for the infrared sensor 10, and a position adjusting unit 30 for the holding unit 20.
The infrared sensor 10 includes an irradiation unit 11 that emits infrared rays, and a light receiving unit 12 that is disposed to face the irradiation unit 11.
In this example, an on-type infrared sensor at the time of light shielding that outputs a detection signal when infrared incident on the light receiving unit 12 is cut is employed.
An on-type infrared sensor that outputs a detection signal when infrared light enters the light receiving unit 12 can also be used.

  In this example, three sets of measuring members 1 are provided on the support base 2. The measuring member 1 is disposed so that the light beams 13 irradiated from the irradiation units 11 of the adjacent measuring members 1 are orthogonal to each other.

The support 2 is provided with a level 2b. The level 2b includes bubble tubes 2c and 2d for measuring the level of the support base 2.
By these bubble tubes 2c and 2d, the front, back, left and right of the support base 2 can be leveled.
That is, when the bubbles in the bubble tubes 2c and 2d are at the reference position, the upper surface of the support base 2 is kept horizontal.

The support base 2 is supported by a leg 2e, and is connected to a support bar 2f connected to the leg 2e and is held away from the ground.
The tip of the leg 2e has a sharp shape, and the support 2 can be easily leveled by adjusting the leg 2e while pushing it against the ground.
When the support base 2 becomes horizontal, the measuring member 1 is installed horizontally with respect to the ground surface.

The infrared sensor 10 is held by holding means 20.
The infrared sensor 10 can be attached to an arbitrary position on the holding means 20 and is configured so that the interval between the two light beams 13 irradiated from the irradiation unit 11 can be appropriately changed.

The two light beams 13 are set to be irradiated with a wider interval as the diameter of the pile 3 increases. On the contrary, the smaller the diameter of the pile 3, the narrower the light beam interval.
Thereby, it becomes possible to respond to piles 3 of various thicknesses.

  Further, the holding means 20 is connected to the position adjusting means 30, and is configured so that the position can be finely adjusted by operating the position adjusting means 30.

The position adjusting unit 30 includes an operation unit 31 and a guide unit 32, and the holding unit 20 is attached to the guide unit 32.
The guide portion 32 is threaded on the outer periphery, and the engaging portion 21 of the holding means 20 is screwed into the guide portion 32.
When the operation unit 31 is rotated, the engaging unit 21 moves along the guide unit 32, whereby the position of the holding unit 20 can be adjusted.

In this example, the measuring member 1a positioned in the left-right direction in FIG. 1 is equipped with an infrared sensor 10 that can emit and receive light.
Moreover, the irradiation part 11 of the infrared sensor 10 is arrange | positioned at the measurement member 1b shown by the upper side of FIG. 1, and the light-receiving part 12 is arrange | positioned in the position which opposes.

The arrangement of the infrared sensor 10 is not limited to the above configuration. For example, it is good also as a structure which arrange | positioned the irradiation part 11 in one side of the measurement member 1a, and arrange | positioned the light-receiving part 12 in the other.
Further, the measurement member 1 may be provided on the side 2k of the support base 2, and the infrared sensor 10 disposed on the measurement member 1b may be of a type capable of receiving and emitting light and configured to transmit and receive infrared rays.

Hereinafter, the operation of the infrared sensor 10 will be described in more detail.
The irradiation unit 11 includes an infrared light emitting element, and an appropriate range in which the pile 3 is to be located is defined by the infrared rays irradiated from the irradiation unit 11.

The irradiation part 11 is provided in a pair, and the two light rays 13 are irradiated. The light rays 13 are irradiated so as to be parallel to each other.
The distance between the two light beams 13 is adjusted to be the same as the diameter of the pile 3 to be driven in or slightly wider than the diameter of the pile 3. When it is made slightly wider, it will be within the allowable range of the displacement width of the pile 3.

The light beams 13 irradiated from the irradiation parts 11 of the adjacent measuring members 1 are orthogonal to each other and form a cross beam shape as shown in FIG.
The crossing of the light rays 13 defines a range 14 indicated by hatching in FIG. Thus, the range 14 partitioned by the light beam 13 is an appropriate position where the pile 3 should be located.

A light receiving unit 12 is provided at a position facing the irradiation unit 11. The light receiving unit 12 includes an infrared light receiving element, and receives infrared light. When the posture of the pile 3 is tilted, it is out of the appropriate range 12 and shields infrared rays, so that the light receiving unit 12 does not receive light.
When the infrared light incident on the light receiving unit 12 is cut, a detection signal is output.

The said detection signal is output to an alerting | reporting means, and it alert | reports that the attitude | position of the pile 2 became inadequate.
FIG. 2 is an explanatory view showing an alarm device 5 as a notification means used in this embodiment.
As illustrated, the alarm device 5 includes a plurality of lamps 5c. The lamp 5c indicates by lighting whether the posture of the pile 3 is shifted to the front, rear, left or right.

FIG. 3 is a block diagram showing the exchange of signals between the pile driving attitude monitoring device S and the alarm device 5.
The infrared sensor 10 and the alarm device 5 are connected by wire or wirelessly.

  When the pile 3 holds an appropriate posture, that is, when it is in the range 14 defined by the light beam 13, all the light beams 13 emitted from the irradiation unit 11 are received by the light receiving unit 12.

If the correct posture is not maintained because the pile 3 is tilted, any one of the light beams 13 is blocked by the pile 3.
Then, the light beam 13 does not enter the light receiving unit 12. The light receiving unit 12 outputs a detection signal to the alarm device 5 when the light beam 13 no longer enters.

  The alarm device 5 is provided with a receiving unit 5a and a control unit 5b. The receiving unit 5a and the control unit 5b are composed of, for example, a one-chip microcomputer, and are provided on the frame 5e of the alarm device 5. The detection signal output from the light receiving unit 12 is received by the receiving unit 5a of the alarm device 5, and is transmitted from the receiving unit 5a to the control unit 5b.

Based on the received detection signal, the control unit 5b determines which one of the light receiving units 12 is the detection signal.
The controller 5b lights or blinks the lamp 5c based on the detection signal. Four lamps 5c are provided, and a lamp at a predetermined position is turned on based on the detection signal, and is configured to guide in which direction the pile 3 should be moved.

  The alarm device 5 is installed in a place where an operator of the pile driving machine can visually recognize. The operator can know in which direction the posture of the pile 3 should be changed by watching the lighting of the lamp 5c.

The pile driving attitude monitoring device S of this example includes a mirror 9 as shown in FIG.
The mirror 9 reflects the pile 3 and transmits the state of the pile 3 to the operator. An operator of the pile driving machine 4 can understand the state of the pile 3 through the mirror 9.
The operator operates the pile driver while looking at the mirror 9 to correct the posture of the pile 3.

In this example, when the correction of the pile 3 is necessary, the buzzer 5d is sounded in accordance with the lighting of the lamp 5c.
The buzzer 5d outputs a predetermined sound under the control of the control unit 5b when the light beam 13 no longer enters any of the light receiving units 12.
At this time, separate sounds may be emitted for each of the left, right, front, and rear.

FIG. 4 is a flowchart showing the flow of processing when the alarm device 5 operates.
First, in step S1, a detection signal is output from the light receiving unit 12 and input to the receiving unit 5a.
Next, in step S2, a detection signal is transmitted from the receiving unit 5a to the control unit 5b.
In step S3, the control unit 5b determines which light receiving unit 12 is the detection.

  Next, the alarm device 5 is activated in step S4. In this example, the lamp 5c indicating which direction the pile 3 should be moved is turned on according to the position of the light receiving unit 12 that has issued the detection signal.

Next, based on FIGS. 5-7, the method of monitoring the attitude | position of the pile 3 driven into the ground using the pile driving attitude monitoring apparatus S which consists of the said structure is demonstrated.
First, as shown in FIG. 5, the pile 3 is attached to the leader 4 a of the pile driving machine 4.
A driving unit 4b is connected to the reader 4a, and a cap 4c is provided on the driving unit 4b.

The head of the pile 3 is connected to the cap 4c. Moreover, the lower end part of the pile 3 is hold | maintained by the holding member 4d, and steadying is achieved.
When the pile 3 is mounted on the pile driving machine 4, the pile driving machine 4 is moved to a predetermined position where the pile 3 is driven.

Next, the pile 3 is erected at the driving position of the pile 3. The pile 3 is erected vertically using a level or the like.
When the pile 3 is erected, a pile driving attitude monitoring device S is disposed around the pile 3 as shown in FIG. In FIG. 6, in order to facilitate understanding, the infrared sensor 10 is shown as a configuration in which one irradiation unit 11 and one light receiving unit 12 are disposed relative to each other, and the irradiation units 11 a to 11 d and the light receiving unit, respectively. Are shown as 12a to 12d, respectively.

  The pile driving attitude monitoring device S is arranged so that the support base 2 is substantially horizontal with respect to the ground surface. Moreover, the positions of the irradiation units 11a to 11d and the light receiving units 12a to 12d are adjusted so that the pile 3 is located in a range 14 defined by the light beam 13 irradiated from the irradiation units 11a to 11d.

When the pile driving attitude monitoring device S is installed, the pile 3 is rotationally pressed into the ground by the pile driving machine 4.
When the pile 3 is tilted and the posture of the pile 3 becomes unsuitable during the rotary press-fitting, the light beam 13 is blocked by the pile 3 as shown in FIG.
In the example of FIG. 7, the light beam 13 irradiated from the irradiation part 11a and the irradiation part 11d is interrupted.

When the light beam 13 no longer enters the light receiving unit 12a and the light receiving unit 12d, a detection signal is output and input to the alarm device 5.
In the alarm device 5, it is confirmed that the detection signal is from the light receiving unit 12a and the light receiving unit 12d.
That it is a detection signal from the light receiving part 12a and the light receiving part 12d means that the position of the pile 3 is shifted in the X direction and the Y direction shown in FIG.
The alarm device 5 lights the lamp 5c so as to guide the posture of the pile 3 to an appropriate position.

  When there is detection from the light receiving unit 12a, a lamp indicating "back" is turned on, and when there is detection from the light receiving unit 12b, a lamp indicating "front" is turned on, and detection from the light receiving unit 12c The lamp indicating “right” is turned on in the case of detection, and the lamp indicating “left” is turned on when detection from the light receiving unit 12d.

  In the case of FIG. 7, the lamps 5c indicating “left” and “rear” are turned on. The operator of the pile driving machine 4 receives the notification from the alarm device 5, adjusts the inclination of the leader 4 a of the pile driving machine 4, and corrects the posture of the pile 3.

As described above, the posture of the pile 3 is monitored by the pile driving posture monitoring device S, and the driving operation of the pile 3 is performed while always maintaining an appropriate posture of the pile 3.
In this way, the pile 3 can be driven vertically.

  8 to 10 show another embodiment. In this embodiment, when the posture of the pile 3 becomes unsuitable, a detection signal is output from the light receiving unit 12, and this detection signal is transmitted to the pile driving machine 4 by wire or wirelessly, so that the posture of the pile 3 is automatically set. Is corrected automatically.

FIG. 8 is a block diagram showing the exchange of signals between the pile driving attitude monitoring device S and the pile driving machine 4.
In the pile driving machine 4, the detection signal is received by the receiving unit 4g. Further, it is transmitted from the receiving unit 4g to the reader control unit 4f.
Upon receiving the detection signal, the reader control unit 4f controls the posture of the reader 4a.

For example, in the situation of FIG. 7, the reader control unit 4f changes the posture of the reader 4a in the left direction and the rear direction.
In order to enable the above control, an attitude changing device 4e of the reader 4a is provided at the upper end or the lower end of the reader 4a.

The posture changing device 4e moves the reader 4a in the X direction and the Y direction, and changes the posture of the reader 4a.
9 and 10 are explanatory diagrams showing an example of the posture changing device 4e. As shown in FIG. 9, for example, the posture changing device 4e is provided on a side surface of the reader 4a, and includes a pair of elastic members that can push and pull the reader 4a. The telescopic member is operated by hydraulic pressure or the like.
The telescopic members are arranged so that the axes are orthogonal to each other, and the positions of the reader 4a in the X direction and the Y direction can be adjusted.

Alternatively, as shown in FIG. 10, the posture changing device 4 e is pivotally supported at the upper end or lower end of the reader 4 a by a fulcrum F and rotates around the fulcrum F in a predetermined direction. A mechanism capable of changing the posture may be provided.
In addition, it is good also as a structure which does not change the attitude | position of the leader 4a, but changes the attitude | position of the pile 3 directly.

  In this embodiment, a displacement amount detection sensor (not shown) is provided on the pile driving posture monitoring device S side as to how much the movement amount is required to correct the posture of the leader 4a or the pile 3. It is better to determine in advance corresponding to the movement amount of the pile 3 detected by this sensor.

As described above, the pile 3 is driven into the ground with an appropriate posture.
Note that the pile 3 is stopped when the pile 3 is driven to a predetermined depth.
In this example, it is confirmed that the pile 3 has been driven to an appropriate depth by using the hitting level confirmation device 6 shown in FIGS.

The stop level confirmation device 6 is installed on the support base 2 of the pile driving posture monitoring device S as shown in FIG.
The batting level confirmation device 6 is used in combination with a staff 8, and as shown in FIG. 11, includes a staff rest 6a and a staff support 6b. Furthermore, it comprises a level arm 6c and a insertion rod 6d.
The level arm 6c is configured such that a portion located below the holding portion 6g can be expanded and contracted by loosening the screw 6f.

Here, the stopping level of the pile 3 will be described with reference to FIG.
The pile 3 is defined so as to be driven until the head of the pile 3 coming out of the ground surface (design GL) becomes a predetermined protrusion amount or less.

In FIG. 12, the undulations are illustrated for exaggeration for explanation, but the ground surface GL of the construction site is not necessarily the same at all locations as illustrated.
However, even if the ground surface GL has undulations, the pile 3 must be driven in a predetermined enough amount of penetration at all locations, and the upper end of the pile 3 must be driven at the same height.

In the example of FIG. 12, the length of the pile 3a from the ground is set so that the pile 3a driven into the lowest ground surface is used as a reference so that the head of the pile 3a has a predetermined length or less. Length emanating from the ground in FIG. 12, the pile 3a is set as A _1. The length A ₁ is intended to fall within the reference length defined.

Since the ground surface into which the other piles 3b and 3c are driven is higher than the ground surface into which the pile 3a is driven, the protruding length A ₂ from the ground surface of the pile 3b and the protruding length A ₃ from the ground surface of the pile 3c. Any of these will fall within the prescribed reference length.

  The striking level confirmation device 6 is installed so that each peg 3a-3c reaches the striking level with respect to each pile 3a-3c so that the insertion rod 6d points the upper end of the piles 3a-3c.

Installation of the stop level confirmation device 6 is performed as follows.
First, level 7 is set at an arbitrary position. In this example, level 7 is installed on the ground surface into which the pile 3a is driven.
Then, collimation by level 7 is performed and an arbitrary height is set. The height, the first reference height H _1.

As shown in FIG. 12, at each point, the stop height H _{2 of the} pile 3 (the upper end portion of the pile 3 in FIG. 12) is a position that is lowered by the distance h from the first reference height H _1. Yes.
A first reference height _{H 1,} and the distance h, the relationship between the protruding length _A 1 to A ₃ of the pile 3a~3c is as follows.

なお、ＢＭ（ベンチマーク）は建物の各部の高さを定める基準となる高さであり、本例ではＢＭの高さを、第二の基準高さＨ_３としている。
本例では、第一の基準高さＨ_１は、この第二の基準高さＨ_３よりも高い位置となるように設定されている。

Incidentally, BM (benchmark) is the height serving as a reference for determining the height of each part of the building, the height of the BM in this example, is the second reference height H _3.
In this example, the first reference height H ₁ is set to be higher than the second reference height H ₃ .

From the calculation of H ₁ ± (distance from BM to GL at the collimation location) in the above formula 1, the distance from the first reference height H ₁ to the second reference height H ₃ , that is, the distance _{L 1} shown in FIG. 12 is calculated.

Further, the distance L _1, by adding or subtracting the distance from the second reference height H ₃ of each point to the GL, by subtracting the protruding length A _{1 to 3} of the pile 3, the distance h is obtained.

The distance h is calculated from the following equation.

It should be noted that the distance h can be obtained from another location by the following formula.

When the batting level confirmation device 6 is installed, as shown in FIG. 13, the balustrade 8 is placed on the bayonet placing table 6a of the batting level confirmation device 6, supported by the barra support portion 6b, and vertically set.
Then, the scale 8a corresponding to the height of the collimation line 7a (that is, the first reference height H ₁ ) is read. The numerical value indicated by the scale corresponds to the length y in FIG.

  Next, the level arm 6c of the striking level confirmation device 6 is expanded and contracted, and the total length z of the striking level confirmation device 6 and the length obtained by adding the length y are adjusted to a height h.

The total length of the hitting level confirmation device 6 can be easily grasped by the scale 6m attached to the level arm 6c and the holding portion 6g.
In the stop level confirmation device 6, the scale placing table 6a is a part where it is difficult to make a scale. This part is formed so that the length l is one scale.
The scale 6m is provided with an integral multiple dimension at regular intervals. Since the level arm 6c and the holding portion 6g have a scale 6m on the circumferential surface, the scale can be confirmed from any position.

  Then, at a point where y + z = h, the screw 6f is tightened to fix the level arm 6c.

The position to which the insertion rod 6d is inserted at this time is the level at which the pile 3 is stopped. That is, when the upper end of the pile 3 reaches the position of the insertion rod 6d, the pile 3 is stopped.
A colored portion 6e is provided at the tip of the insertion rod 6d so that the check position of the pile 3 can be surely confirmed.

Instead of the upper end of the pile 3, and mark the outer peripheral surface of the pile 3, the position of the mark and Datome height H ₂ of the pile 3, when the the pointing stick 6d and indicia match, pile 3 may be performed.

In this case, when the stop level confirmation device 6 is installed, the position of the insertion rod 6d may be lowered by the length from the upper end of the pile 3 to the mark position.
And when the mark of the pile 3 comes to the position of the insertion rod 6d, the pile 3 may be stopped.

In addition, in order to respond | correspond to the pile 3 of a different diameter, the insertion rod 6d of this example is comprised so that expansion-contraction is possible.
Pointing rod 6d has a cylindrical base portion 6d _1, is composed of a rod member 6d ₂ Prefecture, rod member 6d ₂ is configured to be projected from the base 6d _1.

As the diameter of the pile 3 becomes thick, it is housed in the bar member 6d ₂ base 6d _1, pointing rod 6d is shortened. Conversely, as the diameter of the pile 3 becomes narrower, the rod member 6d ₂ is extended to the pile 3 side.

FIG. 14 is an explanatory view showing another embodiment of the hitting level confirmation device 6.
The hitting level confirmation apparatus 6 of this example includes another level arm 6h in addition to the level arm 6c.

The stop level confirmation device 6 of the present example is configured not to use the measure 8.
For this reason, the member equivalent to the measuring stand 6a and the measuring stand support part 6b in the said Example is not provided.

  Similar to the above embodiment, the level arm 6c includes a screw 6f and a holding portion 6g, and a portion located below the holding portion 6g can be expanded and contracted.

The level arm 6h is coupled to the level arm 6c via the connection portion 6i only when the hitting level confirmation device 6 is installed.
By connecting the level arm 6h, the value of the length y can be obtained without using the scale 8.

Since the level arms 6c and 6h have a scale on the peripheral surface, the scale can be confirmed from any position.
The scale is color-coded at regular intervals. For example, if the color is classified every 100 mm, the length in units of 100 mm can be grasped only by looking at the color, and the approximate length can be easily grasped.

  When using the stop level confirmation apparatus 6 shown in FIG. 14, the level arm 6h is removed in the initial stage of pile driving, that is, the stage where the pile driving attitude monitoring apparatus S is installed. In this way, the stop level confirmation device 6 does not interfere with the pile driving work.

  Then, when the pile 3 is driven to some extent and it is necessary to check the stop position, the level arm 6h is connected and the stop level checking device 6 is installed.

When the driving of the pile 3 is finished, the pile driving posture monitoring device S is moved to another place, and another pile 3 is driven.
At this time, the pile driving attitude monitoring device S of this example is unitized and can be easily carried.

  As shown in FIG. 15, the pile driving attitude monitoring device S of this example is easy because the measuring member 1, the support 2, the leg 2 e, the support rod 2 f, and the hitting level confirmation device 6 are integrated. It is possible to move on.

In addition, the pile driving posture monitoring device S is provided with a handle 2i above the leg 2e so that the carrying can be easily performed.
Further, the side 2 g of the support base 2 is detachable from the support base 2. The side 2g is held by a screw or the like on a support bar 2j that is placed above the leg 2e.
This is preferable because the side 2g is not lost during movement.
It is desirable that the mirror 9 be removed from the support base 2 during movement and moved separately to prevent breakage.

It is a perspective view of the pile driving attitude | position monitoring apparatus which concerns on this invention. It is explanatory drawing which shows an alerting | reporting means. It is a block diagram which shows the structure of a pile driving attitude | position monitoring apparatus. It is a flowchart which shows the flow of a process in a pile driving | attitude attitude | position monitoring apparatus and an alerting | reporting means. It is explanatory drawing which shows the process of monitoring the attitude | position of a pile using the driving attitude | position monitoring apparatus of this invention. It is explanatory drawing which shows the process of monitoring the attitude | position of a pile using the driving attitude | position monitoring apparatus of this invention. It is explanatory drawing which shows the process of monitoring the attitude | position of a pile using the driving attitude | position monitoring apparatus of this invention. It is a block diagram which shows the exchange of the signal between a pile driving attitude | position monitoring apparatus and a pile driving machine. It is explanatory drawing which shows an example of the attitude | position change apparatus of the leader of a pile driver. It is explanatory drawing which shows an example of the attitude | position change apparatus of the leader of a pile driver. It is a perspective view of a hitting level confirmation device. It is explanatory drawing of the stop level of a pile. It is explanatory drawing which shows the installation method of a stop level confirmation apparatus. It is explanatory drawing which shows the other Example of the stop level confirmation apparatus. It is explanatory drawing which shows the pile driving attitude | position monitoring apparatus at the time of a movement.

Explanation of symbols

1 Measuring member 2 Support base (support)
2a Base 2b Level 2c 2d Bubble tube 2e Leg 2f Support bar 2g Side 2h Screw 2i Handle 2j Support bar 2k Side 3, 3a, 3b, 3c Pile 4 Pile driver 4a Leader 4b Drive part 4c Cap 4d Holding member 4e Attitude change device 4f Reader control unit 4g Receiving unit 5 Alarm device 5a Receiving unit 5b Control unit 5c Lamp 5d Buzzer 5e Frame body 6 Stopping level confirmation device 6a Measure support table 6b Measure support unit 6c Level arm 6d Insertion rod 6d ₁ Base 6d ₂ bar member 6e Colored part 6f Screw 6g Holding part 6h Level arm 6i Connection part 6m Scale 7 Level 7a Line of sight 8 Standard scale 8a Scale 9 Mirror 10 Infrared sensor 11 Irradiation part (irradiation means)
12 light receiving portion 13 beam 14 range 20 holding means 21 engaging portion 30 position adjusting means 31 operating portion 32 guide portion _A, A 1 ~A ₃ piles exits the ground plane length BM benchmark F fulcrum GL ground plane H ₁ First Reference height H ₂ Pile stop height H ₃ Second reference height h Distance from first reference height to pile stop height s Distance BM to GL at _one collimation location s ₂ , s ₃ Distance from BM to GL at each point S Pile driving attitude monitoring device

Claims (7)

A pile driving posture monitoring device for ensuring the accuracy of the pile driving posture into the ground,
Around the pile, having at least two measuring members disposed substantially horizontally with respect to the ground surface,
The measuring member includes an irradiating unit that irradiates two substantially parallel light beams , and a light receiving unit disposed at a position facing the irradiating unit .
The two light beams irradiated from the respective measuring means intersect with each other to form an appropriate range where the pile is located,
Whether or not the pile is in an appropriate position is determined by whether the light beam is received by the light receiving means,
A pile driving attitude monitoring device comprising: a notification means for notifying that the pile is in an inappropriate position when the pile is out of the appropriate range.   The pile driving attitude monitoring apparatus according to claim 1, wherein the notification means performs notification by lighting or blinking of a lamp.   The pile driving posture monitoring apparatus according to claim 1, wherein the notification means performs notification by voice.   The pile driving attitude monitoring apparatus according to claim 1, wherein the measuring member is disposed on a support and is unitized.   The pile driving attitude monitoring apparatus according to claim 1, wherein an interval between the two light beams is changeable. Wherein when the the appropriate range piles is out, the light receiving means, pile according to claim 1, wherein that you transmit the detection signal for the pile Chi machine implanting the piles into the ground Intrusion posture monitoring device. A pile driving attitude monitoring method for ensuring the accuracy of the pile driving attitude into the ground,
Erecting the pile at the driving position;
A step of arranging at least two measuring members arranged substantially horizontally with respect to the ground surface around the pile;
A step of receiving the measuring member is irradiated with substantially parallel two of the beams,
Adjusting the piles to be located in a range formed by the two light beams intersecting each other;
Driving the pile into the ground;
According to the posture when the pile is driven into the ground, whether or not the pile is in an appropriate position is determined by whether or not the light beam is received by the light receiving means, and the pile is out of the range. when in, pile driving tool posture monitoring method characterized by the fact that the pile is unsuitable properties position informing means comprises and a step of notifying.

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