JP2021195820A - Measuring method for inclination direction and angle of rotary excavation rod - Google Patents

Abstract

To install and fix an inclinometer in a rotary excavation rod, and easily and reliably measure the direction and angle of the inclination of a rotary excavation rod that rotates and descends to the ground when it is rotating or stationary.SOLUTION: In this method, an inclinometer is installed and fixed to a rotary excavation rod b in any direction in the circumferential direction. A rotary excavation machine A is provided with a rotation angle measuring device 1 that measures the rotation angle of the rotary excavation rod b with reference to the installation orientation of the inclinometer. In this way, the direction of the inclinometer is calculated by measuring the rotation angle of the rotary excavation rod b rotating and descending to the ground with the rotation angle measuring device 1, and the direction and angle of the inclination of the rotary excavation rod b are measured by the inclinometer.SELECTED DRAWING: Figure 1

Description

INDUSTRIAL APPLICABILITY The present invention is used for measuring the direction and angle of inclination of a rotary excavation rod of a rotary excavator when it is rotating or stationary in a rotary drilling operation in which a rotary excavator such as an earth auger is used to drill a hole in the ground. The present invention relates to a method of measuring the inclination of a rotary excavation rod.

In the construction to improve the ground and the construction to drive the main pile or foundation pile of the retaining wall into the ground, a rotary excavation rod with a screw or a stirring blade is used by the power of an engine such as an earth auger or an electric or hydraulic motor. Drilling (drilling a round hole in the ground) is performed by rotating and lowering the ground. In the case of such construction, the position of the tip of the rotary excavation rod deviates from the predetermined track due to the inhomogeneity of the ground, obstacles such as stones and rocks, and the influence of the attitude control of the construction machine, and drilling holes. The orbit may bend. In this case, the locus of the rotary excavation rod is calculated on the assumption that the leader and the rotary excavation rod are integrated based on the ground position of the leader of the earth auger and the inclination data of the rotary excavation rod. There is a certain amount of play, and the deviation from the measured value may increase as the excavation depth increases.

In the case of ground improvement work or foundation pile driving work, if the drilling track deviates from the regular track, the ground improvement body or pile body cannot be installed at the design position, and the finished shape cannot be satisfied. In the case of construction of a mountain retaining wall, if the main pile is displaced, a gap will be created and there is a risk that earth and sand and groundwater will flow out.

Therefore, in order to accurately measure the verticality of the rotary excavation rod and the position of the tip when the tip deviates from a predetermined trajectory, a technique of installing an inclination meter on the rotary excavation rod and measuring the inclination of the rotary excavation rod is used. It is proposed by Patent Documents 1 and 2.

Patent Document 1 relates to a guide device for an inclinometer of an excavator, and this Document 1 discloses a method of installing an insertable inclinometer on an auger rod and measuring the inclination of the auger rod with the inclinometer. There is. In the device of Document 1, an inner tube is inserted concentrically with the auger rod inside the auger rod, and a square tube portion is inserted inside the inner tube to fix each of them. The inner tube can be extended by fitting the ends of the square tube portions together. The inclinometer is inserted inside the square tube, and the guide roller provided in the inclinometer allows the inclinometer to move inside the square tube while being in contact with the diagonal corners of the inclinometer. ing. Using such a device, the tilt meter is moved vertically inside the auger rod without rotating it around the axis of the square tube portion, and the tilt of the auger rod is measured at an arbitrary position. ..

Patent Document 2 relates to an excavation accuracy measuring device and a method for excavation holes, and this Document 2 also discloses a method in which an insertion type inclination meter is installed on an excavation rod and the inclination of the excavation rod is measured by the inclination meter. ing. In the method of Document 2, first, in the excavation rod fixing step, the excavation rod excavated to a predetermined depth is separated from the excavator and deposited in the excavation hole of the ground, and the center of the upper end of the excavation rod is set on the ground surface of the excavation hole. Fix the excavation rod so that it coincides with the center of. Next, in the insertion step, an inclinometer for measuring the inclination of the injection pipe is connected to the rod-shaped member whose torsional deformation around the axis is restricted and inserted into the injection pipe penetrating the excavation rod, and the rod-shaped member and other rod-shaped members are inserted. The inclinometer is inserted all the way to the bottom of the injection tube while the members are connected via a bendable connecting means that limits relative rotation around the axis. Finally, in the measurement step, the rod-shaped member is pulled up by a predetermined distance while suppressing the rotation around the axis of the inclinometer, and the inclination of the injection tube is measured by the inclinometer. By doing so, it is possible to measure the excavation accuracy of the excavation hole in the ground without processing the excavation rod as in the technique of Patent Document 1.

Japanese Unexamined Patent Publication No. 4-70494 Japanese Unexamined Patent Publication No. 2013-160010

By the way, in the apparatus and method of Patent Document 2, as described in paragraph 0050, the tilt meter is a one-way measuring type that measures the tilt in one direction with respect to the vertical direction, or two directions (X direction and) with respect to the vertical direction. A two-way measurement type that measures the inclination in the Y direction) is used. Also in the device of Patent Document 1, since the inclinometer is an insertion type and the position of the inclinometer in the circumferential direction is determined in the auger rod, a one-way measurement type or a two-way measurement type inclinometer is used. Seems to be. In order to accurately measure the verticality of the rotary excavation rod and the tip position when the rotary excavation rod is tilted by using such an inclination meter, it is preferable to fix the tilt meter to the rotary excavation rod for measurement. ..

However, when such an inclinometer is installed and fixed in the rotary excavation rod and the direction and angle of the inclination of the rotary excavation rod to be rotated and lowered to the ground are measured, the installation position of the inclinometer always comes in the same direction. The rotary excavation rod must be stopped. In other words, in the conventional method of measuring the inclination of the rotary excavation rod, if the tilt meter is installed and fixed in the rotary excavation rod, the direction of the tilt meter in the rotary excavation rod during the rotation descent is unknown, and the rotation descent is in progress. There is a problem that the direction of inclination of the rotary excavation rod cannot be measured.

The present invention solves such a conventional problem, and in this kind of rotary excavation rod tilt measurement method, this kind of tilt meter (described above-mentioned tilt meter) is installed and fixed in advance in the rotary excavation rod. The purpose is to easily and surely measure the direction and angle of inclination of the rotary excavation rod that is rotated and lowered to the ground when it is rotating or stationary.

In order to achieve the above object, the present invention
The direction of inclination and the angle of the rotary excavation rod, which is connected to the rotary drive unit of the rotary excavation machine including the earth auger and is rotated and lowered to the ground by the rotary drive unit, is measured by using an inclinometer. And the angle measurement method,
The inclinometer is installed and fixed to the rotary excavation rod in any direction in the circumferential direction.
The rotary excavation machine is provided with a rotation angle measuring device for measuring the rotation angle of the rotation excavation rod or the rotation drive unit with reference to the installation orientation of the inclination meter.
The direction of the tilt meter is calculated by measuring the rotation angle of the rotation excavation rod or the rotation drive unit while rotating down to the ground by the rotation angle measuring device, and the inclination of the rotation excavation rod is calculated by the inclination meter. Measure the direction and angle of
The gist is that.

This method is further embodied as follows.
(1) As a rotation angle measuring device, a plurality of different recognition markers are attached to the outer peripheral surface of the rotation excavation rod at regular intervals based on the installation direction of the tilt meter, and the recognition is performed around the rotation excavation rod. A scale for measuring the rotation angle of the marker and an image pickup device for imaging each recognition marker of the rotary excavation rod together with the scale are installed, and the image pickup device causes the rotary excavation rod of the rotary excavation rod to be rotated and lowered. Each recognition marker is imaged together with the scale, and the rotation angle of the rotary excavation rod is measured based on the captured image.
(2) As a rotation angle measuring device, a rotation angle scale is continuously attached to the outer peripheral surface of the rotation excavation rod based on the installation direction of the tilt meter, and the rotation of the rotation excavation rod is surrounded around the rotation excavation rod. An image pickup device for imaging the angle scale is installed, the rotation angle scale of the rotary excavation rod during rotation descent is imaged by the image pickup device, and the rotation angle of the rotary excavation rod is measured based on the rotation angle scale. do.
(3) As a rotation angle measuring device, one recognition marker is attached to the outer peripheral surface of the rotation excavation rod corresponding to the installation direction of the tilt meter, and the recognition marker of the rotation excavation rod is placed around the rotation excavation rod. An image pickup device for imaging is installed, and the rotary excavation rod is imaged by the image pickup device, and the rotation angle of the rotary excavation rod is set to 0 ° each time the image pickup device and the recognition marker face each other. measure.
(4) As a rotation angle measuring device, an encoder that measures the rotation angle of the rotation drive unit based on the installation direction of the tilt meter is installed in the rotation drive unit, and the rotation angle of the rotation drive unit is detected by the encoder. By doing so, the rotation angle of the rotary excavation rod during the rotation descent is measured.

According to the method of measuring the inclination direction and angle of the rotary excavation rod of the present invention, the tilt meter is installed and fixed in the rotary excavation rod in advance, and the rotary excavation rod is rotated and lowered to the ground. And the angle can be measured easily and surely, which is a special effect peculiar to the present invention.

The figure which shows the image of the direction and angle measurement method of the inclination of the rotary excavation rod which concerns on 1st to 4th Embodiment of this invention. The figure which shows the image of the direction and angle measurement method of the inclination of the rotary excavation rod which concerns on 1st Embodiment of this invention. The figure which shows the image of the direction and angle measurement method of the inclination of the rotary excavation rod which concerns on 2nd Embodiment of this invention. The figure which shows the image of the direction and angle measurement method of the inclination of the rotary excavation rod which concerns on 3rd Embodiment of this invention. The figure which shows the image of the direction and angle measurement method of the inclination of the rotary excavation rod which concerns on 4th Embodiment of this invention.

Next, a mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows an image of a method for measuring the inclination direction and angle of a rotary excavation rod. As shown in FIG. 1, the method of measuring the inclination direction and angle of the rotary excavation rod (hereinafter referred to as this method) is connected to the rotary drive unit a of the rotary excavation machine A including the earth auger, and is connected to the rotary drive unit. The direction and angle of the inclination of the rotary excavation rod b that is rotated and lowered to the ground by a are measured using an inclination meter (not shown).

In this method, in particular, the tilt meter is installed and fixed to the rotary excavation rod b in an arbitrary direction in the circumferential direction, and the rotary excavation rod b or the rotary drive is driven to the rotary excavation machine A with reference to the installation direction of the tilt meter. A rotation angle measuring device 1 for measuring the rotation angle of the part a is provided, and the rotation angle of the rotation excavation rod b or the rotation drive unit a during rotation and descent on the ground is measured by the rotation angle measuring device 1 to obtain a tilt meter. The direction is calculated, and the direction and angle of the inclination of the rotary excavation rod b at the time of rotation or at rest are measured by this inclination meter.

2 to 5 show the first to fourth embodiments of the present invention.

(Embodiment 1)
FIG. 2 shows the first embodiment. As shown in FIG. 2, in this method, an inclinometer (not shown) is installed and fixed to the rotary excavation rod b in an arbitrary direction in the circumferential direction. The rotary excavation machine A (see FIG. 1) is provided with a rotation angle measuring device 1 that measures the rotation angle of the rotary excavation rod b with reference to the installation orientation of the tilt meter.

In this case, a two-way measurement type that measures the inclination in two directions with respect to the vertical direction is used for the inclinometer. This tilt meter sends and receives a tilt sensor that measures tilt in two directions (X and Y directions) with respect to the vertical direction, a control signal transmitted from the outside, and a tilt angle measurement signal measured by this tilt sensor. It is equipped with a wireless communication unit, these tilt sensors, a control unit that controls the communication unit, and the like. This inclinometer is embedded and installed in the inner tip of the rotary excavation rod b so that the direction of the inclinometer is any direction in the circumferential direction of the rotary excavation rod b. With this tilt meter, the verticality of the rotary excavation rod b rotating and descending to the ground or the inclination when the rotary excavation rod b is tilted is measured.

Further, in this case, as the rotation angle measuring device 1, a plurality of different recognition markers 101 are attached to the outer peripheral surface of the rotation excavation rod b at regular intervals with reference to the installation orientation of the tilt gauge, and the circumference of the rotation excavation rod b. A scale 102 for measuring the rotation angle of each recognition marker 101 and an image pickup device 103 for imaging each recognition marker 101 of the rotary excavation rod b together with the scale 102 are installed. In this case, as the recognition marker 101, on the outer peripheral surface of the rotary excavation rod b, the circumferential direction of the rotary excavation rod b from the center of the surface corresponding to the direction in which the tilt meter is installed, that is, the direction of the tilt meter. Four color-coded straight lines extending in the length direction of the rotary excavation rod b are attached at intervals of 90 °. Thus, the rotation angle of the rotary excavation rod b is set to 0 (zero) ° on one of the four straight lines on the outer peripheral surface of the rotary excavation rod b in the direction corresponding to the installation direction of the inclinometer. As a result, the other straight lines sequentially represent the angular positions of 90 °, 180 °, and 270 °. The scale 102 is a ring slightly larger than the diameter of the rotary excavation rod b so that the rotary excavation rod b can be inserted. , 15 °, etc., and an auxiliary scale with an angle scale at intervals of 1 °. The angle scale of the scale 102 may be represented by various characters, symbols, figures, or the like instead of numbers. The scale 102 is attached to a part of the rotary excavation machine A and arranged around the rotary excavation rod b. Here, since the earth auger is used for the rotary excavation machine A, the scale 102 is attached to the lower part of the leader c and arranged around the rotary excavation rod b which is rotationally lowered to the ground. A camera is used as the image pickup apparatus 103, and each recognition marker 101 of the rotary excavation rod b is installed on the rotary excavation machine A so as to be photographable together with the scale 102, and is arranged around the rotary excavation rod b. Here, the camera is installed below the reader c and above the scale 102. In this way, the rotation angle measuring device 1 is attached to the rotary excavation machine A including the earth auger, and each recognition marker 101 of the rotary excavation rod b rotating and descending to the ground is imaged together with the scale 102 and imaged. The rotation angle of the rotary excavation rod b is measured based on the image.

In this way, in this method, the recognition marker 101 of the rotary excavation rod b rotating and descending to the ground is photographed together with the scale 102 by the camera, and the rotation angle of the rotary excavation rod b is measured based on this image. Then, the direction of the tilt meter is calculated from the rotation angle of the rotary excavation rod b, and the direction and angle of the inclination of the rotary excavation rod b are measured by this tilt meter.

1 and 2 show an example of construction in this embodiment. Referring to FIGS. 1 and 2, a plurality of rotary excavation rods b are connected to the tip of the rotary drive portion a of the earth auger according to the depth of the ground to be excavated before the construction. Further, even during construction, a rotary excavation rod b is added according to the depth of the ground to be excavated. An inclinometer is installed and fixed to each rotary excavation rod b so that the inclinometer is installed and fixed in the same direction on the circumference of the rotary excavation rod b. Before this construction, of the recognition marker 101 composed of four straight lines of each rotary excavation rod b, the recognition marker 101 having a rotation angle of 0 degrees and the angle 0 degree of the scale 102 are aligned.

As shown in FIGS. 1 and 2, in the construction, the rotary drive unit a of the earth auger is rotationally driven to rotate and lower each rotary excavation rod b, and an excavation hole is excavated in the ground to a predetermined excavation depth. While drilling the ground with the rotary excavation rod b, each rotary excavation rod b is passed through the ring-shaped scale 2 and the scale of each recognition marker 101 is scaled by a camera fixed to the leader c for each rotary excavation rod b. Take a video with 102. Then, the rotation angle of each rotary excavation rod b is measured based on this moving image. In this case, the moving image taken by the camera, that is, the recognition marker 101 and the scale 102 of each rotary excavation rod b read by the camera are taken into a personal computer or a tablet terminal by the existing measurement software, and each of the rotary excavation rods b. The rotation angle of each rotary excavation rod b is measured from the image information of the recognition marker 101 and the scale 102, and the direction of the inclinometer is calculated from this rotation angle. The orientation of this inclinometer is displayed on the display of a personal computer or tablet terminal.

Then, the direction and angle of the inclination of the rotary excavation rod b during the rotational descent are measured by the inclined meter whose direction is specified. In this case, the tilt direction and angle of the rotary excavation rod b during rotation and descent are automatically measured by the tilt meter, and this measurement data is automatically transmitted to the personal computer or tablet terminal by the wireless communication unit, and the rotary excavation rod b The direction and angle of tilt are displayed on the display of a personal computer or tablet terminal.

From the direction and angle of inclination of the rotary excavation rod b, it is possible to grasp the verticality of the excavation hole or, when the excavation hole is inclined, in which direction and at what angle with respect to the vertical direction.

As described above, in the first embodiment of the present method, the inclinometer is installed and fixed to the rotary excavation rod b in any direction in the circumferential direction. As a rotation angle measuring device 1 for measuring the rotation angle of the rotation excavation rod b based on the installation direction of the inclination meter on the rotary excavation machine A including the earth auger, the installation direction of the inclination meter on the outer peripheral surface of the rotation excavation rod b. A plurality of different recognition markers 101 are attached at regular angular intervals based on the above, and a scale 2 for measuring the rotation angle of each recognition marker 101 and each recognition of the rotary excavation rod b are attached around the rotary excavation rod b. An image pickup device 103 that captures an image of the marker 101 together with the scale 102 is installed. In this way, the direction of the tilt meter is calculated by measuring the rotation angle of the rotary excavation rod b rotating and descending to the ground by the rotation angle measuring device 1, and the rotation excavation rod b is rotating or stationary by the inclination meter. Since the direction and angle of inclination at time are measured, an inclination meter is installed and fixed in the rotary excavation rod b in advance, and the direction and angle of inclination of the rotary excavation rod b that rotates and descends to the ground can be simplified. It is possible to measure reliably and in real time.

Further, according to this method, since the inclination of the rotary excavation rod b is measured without stopping the operation of the rotary excavation machine A, the entire construction can be smoothly progressed. Furthermore, by using a camera to measure the inclination of the rotary excavation rod b, the construction process and the operation of the rotary excavation rod b can be recorded together, and clear confirmation data can be obtained.

(Embodiment 2)
FIG. 3 shows a second embodiment. As shown in FIG. 3, in this method, an inclinometer (not shown) is installed and fixed to the rotary excavation rod b in an arbitrary direction in the circumferential direction. The rotary excavation machine A (see FIG. 1) is provided with a rotation angle measuring device 1 that measures the rotation angle of the rotary excavation rod b with reference to the installation orientation of the tilt meter.

In this case, the inclinometer is the same as in the first embodiment. Here, the duplicate description will be omitted.

Further, in this case, as the rotation angle measuring device 1, a rotation angle scale 104 is continuously attached to the outer peripheral surface of the rotation excavation rod b with reference to the installation direction of the tilt meter, and rotation excavation is performed around the rotation excavation rod b. An image pickup device 105 for imaging the rotation angle scale 104 of the rod b is installed. In this case, the rotation angle scale 104 is set on the outer peripheral surface of the rotary excavation rod b in the circumferential direction of the rotary excavation rod from the center of the surface corresponding to the installation direction of the inclinometer, that is, the direction of the inclinometer on the outer peripheral surface. For example, every unit angle, such as every 1 °, is attached by continuously displaying the length in a rod shape in direct proportion to the size of the rotation angle so that the length gradually increases. A camera is used as the image pickup apparatus 105, and the camera is installed in the rotary excavation machine A so that the rotation angle scale 104 of the rotary excavation rod b can be photographed by the camera, and is arranged around the rotary excavation rod b. Here, since the earth auger is used for the rotary excavation machine A, the camera is attached to an appropriate position of the leader c suitable for photographing the rotation angle scale 104. In this way, the rotation angle measuring device 1 is attached to the rotary excavation machine A including the earth auger, and the rotation angle scale 104 of the rotation excavation rod b rotating and descending to the ground is photographed by the camera, and the photographed image is taken. Based on this, the rotation angle of the rotary excavation rod b is measured.

In this way, in this method, the rotation angle scale 104 of the rotary excavation rod b rotating and descending to the ground is photographed by the camera, and the rotation angle of the rotary excavation rod b is measured based on the photographed image. Then, the direction of the tilt meter is calculated from the rotation angle of the rotary excavation rod b, and the direction and angle of the inclination of the rotary excavation rod b are measured by this tilt meter.

1 and 3 show an example of construction in this embodiment. Referring to FIGS. 1 and 3, a plurality of rotary excavation rods b are connected to the tip of the rotary drive unit a of the earth auger according to the depth of the ground to be excavated before the construction. Further, even during construction, a rotary excavation rod b is added according to the depth of the ground to be excavated. As described above, the inclinometer is installed and fixed to the rotary excavation rod b so that the inclinometer is installed and fixed in the same direction on the circumference of the rotary excavation rod b. Then, before this construction, 0 degree of the rotation angle scale 104 of each rotation excavation rod b is adjusted to the camera.

As shown in FIGS. 1 and 3, in the construction, the rotary drive unit a of the earth auger is rotationally driven to rotate and lower each rotary excavation rod b, and an excavation hole is excavated in the ground to a predetermined excavation depth. While the ground is drilled with the rotary excavation rod b, the rotation angle scale 104 is photographed as a moving image with a camera fixed to the leader c for each rotary excavation rod b. Then, the rotation angle of each rotary excavation rod b is measured based on this moving image. In this case, the moving image taken by the camera, that is, the rotation angle scale 104 of each rotary excavation rod b read by the camera, here, the length of the pillar is taken into a personal computer or a tablet terminal by the existing measurement software, and each rotary excavation rod. From the image information of the rotation angle scale 104 of b, the rotation angle of each rotation excavation rod b is measured, and the direction of the inclinometer is calculated from this rotation angle. The orientation of this inclinometer is displayed on the display of a personal computer or tablet terminal.

Then, the direction and angle of the inclination of the rotary excavation rod b during the rotational descent are measured by the inclined meter whose direction is specified. In this case, the tilt direction and angle of the rotary excavation rod b during rotation and descent are automatically measured by the tilt meter, and this measurement data is transmitted to a personal computer or tablet terminal by the wireless communication unit, and the tilt of the rotary excavation rod b is tilted. The direction and angle of are displayed on the display of a personal computer or tablet terminal.

From the direction and angle of inclination of the rotary excavation rod b, it is possible to grasp the verticality of the excavation hole or, when the excavation hole is inclined, in which direction and at what angle with respect to the vertical direction.

As described above, in the second embodiment of the present method, the inclinometer is installed and fixed to the rotary excavation rod b in any direction in the circumferential direction. As a rotation angle measuring device 1 for measuring the rotation angle of the rotation excavation rod b based on the installation direction of the inclination meter on the rotary excavation machine A including the earth auger, the installation direction of the inclination meter on the outer peripheral surface of the rotation excavation rod b. The rotation angle scale 104 is continuously attached with reference to the above, and an image pickup device 105 for imaging the rotation angle scale 104 of the rotation excavation rod b is installed around the rotation excavation rod b. In this way, the direction of the tilt meter is calculated by measuring the rotation angle of the rotary excavation rod b rotating and descending to the ground by the rotation angle measuring device 1, and the rotation excavation rod b is rotating or stationary by the inclination meter. Measure the direction and angle of tilt of time. Even in this way, the same effect as that of the first embodiment can be obtained.

(Embodiment 3)
FIG. 4 shows a third embodiment. As shown in FIG. 4, in this method, an inclinometer (not shown) is installed and fixed to the rotary excavation rod b in an arbitrary direction in the circumferential direction. The rotary excavation machine A (see FIG. 1) is provided with a rotation angle measuring device 1 that measures the rotation angle of the rotary excavation rod b with reference to the installation orientation of the tilt meter.

In this case, the inclinometer is the same as in the first embodiment. Here, the duplicate description will be omitted.

Further, in this case, as the rotation angle measuring device 1, one recognition marker 106 is attached to the outer peripheral surface of the rotation excavation rod b corresponding to the installation direction of the tilt meter, and the rotation excavation rod b is surrounded around the rotation excavation rod b. An image pickup device 107 for imaging the recognition marker 106 of the above is installed. In this case, as the recognition marker 106, the outer peripheral surface of the rotary excavation rod b passes through the center of the surface corresponding to the direction in which the inclinometer is installed, that is, the direction of the inclinometer on the outer peripheral surface of the rotary excavation rod b. A straight line extending in the length direction is attached. A camera is used as the image pickup apparatus 107, and the recognition marker 106 of the rotary excavation rod b is installed in the rotary excavation machine A so that the image can be photographed by the camera, and is arranged around the rotary excavation rod b. Here, since the earth auger is used for the rotary excavation machine A, the camera is attached to the lower part of the reader c. In this way, the rotation angle measuring device 1 is attached to the rotary excavation machine A including the earth auger, and the rotary excavation rod b rotating and descending to the ground is photographed by the camera, and every time the camera and the recognition marker 106 face each other. , The rotation angle of the rotary excavation rod b is measured as 0 °.

In this way, in this method, the rotary excavation rod b rotating and descending to the ground is photographed by the camera, and the rotation angle of the rotary excavation rod b is measured as 0 ° each time the camera and the recognition marker 106 face each other. Then, the direction of the tilt meter is calculated from the rotation angle of the rotary excavation rod b, and the direction and angle of the inclination of the rotary excavation rod are measured by this tilt meter.

1 and 4 show an example of construction in this embodiment. Referring to FIGS. 1 and 4, a plurality of rotary excavation rods b are connected to the tip of the rotary drive unit a of the earth auger according to the depth of the ground to be excavated before the construction. Further, even during construction, a rotary excavation rod b is added according to the depth of the ground to be excavated. An inclinometer is installed and fixed to each rotary excavation rod b so that the inclinometer is installed and fixed in the same direction on the circumference of the rotary excavation rod b.

As shown in FIGS. 1 and 4, in the construction, the rotary drive unit a of the earth auger is rotationally driven to rotate and lower each rotary excavation rod b, and an excavation hole is excavated in the ground to a predetermined excavation depth. While drilling the ground with the rotary excavation rod b, each recognition marker 106 is photographed for each rotary excavation rod b with a camera fixed to the leader c, and each time the camera and the recognition marker 106 face each other, the rotary excavation rod b The rotation angle of is measured as 0 °. In this case, the moving image taken by the camera, that is, each recognition marker 106 of each rotary excavation rod b read by the camera is taken into a personal computer or a tablet terminal by the existing measurement software, and each recognition marker 106 of each rotary excavation rod b is taken. From the image information, the rotation angle of each rotary excavation rod b is automatically measured as 0 °, and the direction of the inclinometer is calculated from this rotation angle. In this case, it is recognized that the inclinometer is in the same orientation as when it is attached to the rotary excavation rod b. The orientation of this inclinometer is displayed on the display of a personal computer or tablet terminal.

Then, the direction and angle of the inclination of the rotary excavation rod b during the rotational descent are measured by the inclined meter whose direction is specified. In this case, the tilt direction and angle of the rotary excavation rod b during rotation and descent are automatically measured by the tilt meter, and this measurement data is transmitted to a personal computer or tablet terminal by the wireless communication unit, and the tilt of the rotary excavation rod b is tilted. The direction and angle of are displayed on the display of a personal computer or tablet terminal.

From the direction and angle of inclination of the rotary excavation rod b, it is possible to grasp the verticality of the excavation hole or, when the excavation hole is inclined, in which direction and at what angle with respect to the vertical direction.

As described above, in the third embodiment of the present method, the inclinometer is installed and fixed to the rotary excavation rod b in any direction in the circumferential direction. As a rotation angle measuring device 1 for measuring the rotation angle of the rotary excavation rod b based on the installation direction of the tilt meter on the rotary excavation machine A including the earth auger, the installation direction of the tilt meter on the outer peripheral surface of the rotary excavation rod b. One recognition marker 106 is attached to the above, and an image pickup device 107 for imaging the recognition marker 106 of the rotary excavation rod b is installed around the rotary excavation rod b. In this way, the rotation angle of the rotary excavation rod b rotating and descending to the ground is measured by the rotation angle measuring device 1, and the direction of inclination of the tilt meter at that time is calculated. In this case, by measuring the rotation angle of the rotary excavation rod b at 0 °, the same direction as when the tilt meter is attached is calculated as the direction of the tilt meter, and the tilt meter is used to rotate or stand still the rotary excavation rod b. Measure the direction and angle of tilt of time. Even in this way, the same effect as that of the first embodiment can be obtained.

(Embodiment 4)
FIG. 5 shows a fourth embodiment. As shown in FIG. 5, in this method, an inclinometer (not shown) is installed and fixed to the rotary excavation rod b in an arbitrary direction in the circumferential direction. The rotary excavation machine A is provided with a rotation angle measuring device 1 that measures the rotation angle of the rotation drive unit a with reference to the installation orientation of the tilt meter.

In this case, the inclinometer is the same as in the first embodiment. Here, the duplicate description will be omitted.

Further, in this case, as the rotation angle measuring device 1, an encoder 108 for measuring the rotation angle of the rotation drive unit a with reference to the installation direction of the tilt meter is installed in the rotation drive unit a. In this case, the rotary drive unit a is composed of a deceleration mechanism d, a spindle (not shown), a chuck (not shown), etc., is operatively connected to the hydraulic motor e, and is arranged so as to be movable in the vertical direction on the leader c. It is attached to the drive head f. In the rotary drive unit a, the rotary excavation rod b is connected to the spindle via a chuck, the rotary drive unit a is lowered along the leader c together with the drive head f, and the hydraulic motor e is driven via the deceleration mechanism d. The spindle is rotationally driven to rotate and lower the rotary excavation rod b. An encoder 108 is attached to the deceleration mechanism d in the rotary drive unit a, and the encoder 108 detects the rotation angle of the spindle in association with the installation direction of the tilt meter in the rotary excavation rod b. .. In this way, the rotation angle measuring device 1 is attached to the rotary excavation machine A including the earth auger, and the encoder 108 of the rotation drive unit a measures the rotation angle of the spindle of the rotation drive unit a in relation to the installation direction of the tilt meter. By measuring, the rotation angle of the rotary excavation rod b while rotating and descending to the ground is measured.

In this way, in this method, the encoder 108 measures the rotation angle of the spindle of the rotation drive unit a in relation to the installation direction of the inclinometer, and the rotation excavation rod rotating and descending to the ground based on the rotation angle of this spindle. Measure the rotation angle of b. Then, the direction of the tilt meter is calculated from the rotation angle of the rotary excavation rod b, and the direction and angle of the inclination of the rotary excavation rod b are measured by this tilt meter.

1 and 5 show an example of construction in this embodiment. Referring to FIGS. 1 and 5, a plurality of rotary excavation rods b are connected to the tip of the rotary drive unit a of the earth auger before construction, depending on the depth of the ground to be excavated. Further, even during construction, a rotary excavation rod b is added according to the depth of the ground to be excavated. An inclinometer is installed and fixed to each rotary excavation rod b so that the inclinometer is installed and fixed in the same direction on the circumference of the rotary excavation rod b. Prior to this construction, the encoder 108 is set to detect the rotation angle of the spindle with respect to the initial orientation when the inclinometer in the rotary excavation rod b is attached.

As shown in FIGS. 1 and 5, in the construction, the rotary drive unit a of the earth auger is rotationally driven to rotate and lower each rotary excavation rod b, and an excavation hole is excavated in the ground to a predetermined excavation depth. While drilling the ground with the rotary excavation rod b, the encoder 108 of the rotary drive unit a detects the rotation angle of the spindle. Then, the rotation angle of each rotary excavation rod b is measured based on the rotation angle of this spindle. In this case, the rotation angle of the spindle detected by the encoder 108 is taken into a personal computer or tablet terminal by existing measurement software, the rotation angle of each rotation excavation rod b is measured from the rotation angle information of this spindle, and the tilt meter is used from this rotation angle. Calculate the orientation of. The orientation of this inclinometer is displayed on the display of a personal computer or tablet terminal.

Then, the inclination angle of the rotary excavation rod b during the rotational descent is measured by the inclinometer whose direction is specified. In this case, the tilt direction and angle of the rotary excavation rod b during rotation and descent are automatically measured by the tilt meter, and this measurement data is transmitted to a personal computer or tablet terminal by the wireless communication unit, and the tilt of the rotary excavation rod b is tilted. The direction and angle of are displayed on the display of a personal computer or tablet terminal.

From the direction and angle of inclination of the rotary excavation rod b, it is possible to grasp the verticality of the excavation hole or, when the excavation hole is inclined, in what direction and at what angle with respect to the vertical direction.

As described above, in the fourth embodiment of the present method, the inclinometer is installed and fixed to the rotary excavation rod b in any direction in the circumferential direction. In the rotary excavation machine A including the earth auger, as the rotation angle measuring device 1, an encoder 108 for measuring the rotation angle of the rotation drive unit a with reference to the installation direction of the tilt meter is installed in the rotation drive unit a. In this way, the direction of the tilt meter is calculated by measuring the rotation angle of the rotary excavation rod b rotating and descending to the ground by the rotation angle measuring device 1, and the rotation excavation rod b is rotating or stationary by the inclination meter. Measure the direction and angle of tilt of time. Even in this way, the same effect as that of the first embodiment can be obtained.

In each of the above embodiments, a two-way measurement type is used for the inclinometer, but a one-way measurement type for measuring the inclination in one direction with respect to the vertical direction may be used for the inclinometer. Even in this way, the same effects as those of the above-described embodiments can be obtained.

Further, in each of the above embodiments, the inclinometer is embedded and installed in the inner tip of the rotary excavation rod, but a storage recess for the inclinometer is formed on the outer peripheral surface of the rotary excavation rod, and the inclinometer is integrated in the storage recess. It may be installed and fixed in. Even in this way, the same effects as those of the above-described embodiments can be obtained.

Further, in the first to third embodiments, the recognition marker or the rotation angle scale and an image pickup device such as a camera are used as the rotation angle measuring device, but instead of these recognition markers or the rotation angle scale and the camera, A display means having various kinds of information and various sensors for reading this information may be adopted. Further, in the fourth embodiment, the encoder is used for the rotation angle measuring device, but various sensors may be adopted instead of the encoder. Even in this way, the same effects as those of the above-described embodiments can be obtained.

A rotary excavation machine a rotary drive unit b rotary excavation rod c leader d deceleration mechanism e hydraulic motor f drive head 1 rotation angle measuring device 101 recognition marker 102 scale 103 image pickup device 104 rotation angle scale 105 image pickup device 106 recognition marker 107 image pickup device 108 encoder

Claims (5)

The direction of inclination and the angle of the rotary excavation rod, which is connected to the rotary drive unit of the rotary excavation machine including the earth auger and is rotated and lowered to the ground by the rotary drive unit, is measured by using an inclinometer. And the angle measurement method,
The inclinometer is installed and fixed to the rotary excavation rod in any direction in the circumferential direction.
The rotary excavation machine is provided with a rotation angle measuring device for measuring the rotation angle of the rotation excavation rod or the rotation drive unit with reference to the installation orientation of the inclination meter.
The direction of the tilt meter is calculated by measuring the rotation angle of the rotation excavation rod or the rotation drive unit while rotating down to the ground by the rotation angle measuring device, and the inclination of the rotation excavation rod is calculated by the inclination meter. Measure the direction and angle of
A method for measuring the direction and angle of inclination of a rotary excavation rod. As a rotation angle measuring device, a plurality of different recognition markers are attached to the outer peripheral surface of the rotary excavation rod at regular intervals based on the installation orientation of the tilt meter, and the rotation of each recognition marker is rotated around the rotary excavation rod. A scale for measuring the angle and an image pickup device for imaging each recognition marker of the rotary excavation rod together with the scale are installed, and the recognition marker of the rotary excavation rod being rotated and descended by the image pickup device. The method for measuring the inclination direction and angle of the rotary excavation rod according to claim 1, wherein the image is taken together with the scale and the rotation angle of the rotary excavation rod is measured based on the captured image. As a rotation angle measuring device, a rotation angle scale is continuously provided on the outer peripheral surface of the rotation excavation rod based on the installation direction of the tilt meter, and the rotation angle scale of the rotation excavation rod is provided around the rotation excavation rod. A claim in which an image pickup device for imaging is installed, the rotation angle scale of the rotation excavation rod during rotation descent is imaged by the image pickup device, and the rotation angle of the rotation excavation rod is measured based on the rotation angle scale. The method for measuring the direction and angle of inclination of the rotary excavation rod according to 1. As a rotation angle measuring device, one recognition marker is attached to the outer peripheral surface of the rotary excavation rod corresponding to the installation direction of the tilt meter, and the recognition marker of the rotary excavation rod is imaged around the rotary excavation rod. A device is installed, the rotary excavation rod is imaged by the image pickup device, and the rotation angle of the rotary excavation rod is measured as 0 ° each time the image pickup device and the recognition marker face each other. Item 2. The method for measuring the inclination direction and angle of the rotary excavation rod according to Item 1. As a rotation angle measuring device, an encoder that measures the rotation angle of the rotation drive unit based on the installation direction of the tilt meter is installed in the rotation drive unit, and the encoder detects the rotation angle of the rotation drive unit. The method for measuring the direction and angle of inclination of the rotary excavation rod according to claim 1, wherein the rotation angle of the rotary excavation rod during rotation descent is measured.

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