JP2553025B2 - Circular pit construction equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction device for a circular pit which is constructed so as to have a cylindrical shape as a whole, and more particularly to a construction device capable of accurately driving a pile along a circular construction line. .

[0002]

2. Description of the Related Art A circular pit is constructed by placing a large number of piles along a circular construction line. In the conventional construction of circular pits, the piles are positioned and laid one by one while measuring the distance from the center of the circular pit, or a ruler is set so as to match the planned construction line of the circular pit to be constructed. It was done by making a circular shape, installing this circular ruler at the construction site, and placing it while sliding the pile along the ruler.

[0003]

However, when positioning the piles one by one, it takes a long time to perform the measurement for the positioning. On the other hand, when a circular ruler that fits the circular pit is used, the ruler is large in size, so that its manufacturing is troublesome and it takes a long time to manufacture it. In addition, in each case, a large number of workers were required to construct the circular pit, and the work efficiency was poor. Further, conventionally, since the verticality of the piles to be driven is not monitored, the piles are likely to be driven obliquely, and there is a problem that a great amount of labor and time are spent for repairing the driving.

The present invention has been made in consideration of the above circumstances, and it is possible to easily determine the driving position of the piles, to perform the construction in a short time, and to reduce the number of working personnel. The purpose is to provide a construction device. Another object of the present invention is to provide a construction device for a circular pit having a function of preventing diagonal driving of piles.

[0005]

A circular pit construction apparatus according to the present invention comprises a rotatable central member installed at the center of a circular pit which is constructed in a circular shape by driving piles, and a radius of the circular pit. And a ruler member which has a length substantially equal to that of the ruler and which is attached to the central member and has a guide portion at a tip end portion for guiding the driving pile to slide. .

In addition to the above-mentioned construction, the construction apparatus of the present invention further comprises a measuring means for emitting a luminous flux to the pile and receiving the reflected luminous flux, and based on this, measuring the inclination angle of the pile with respect to the verticality. It can be configured by.

[0007]

In the above structure, the center member rotates at a pitch of one pile and the ruler member rotates at every rotation. This ruler member has a length substantially equal to the radius of the circular pitch, and specifies the driving position of the pile each time the vehicle turns. Therefore, by driving the pile so as to slide on the guide portion of the ruler member, the pile can be driven with high positioning accuracy, and the circular pit can be easily and quickly constructed.

The measuring means in the above construction monitors the diagonal driving of the pile by the optical measurement. Therefore, the angle of the pile can be corrected during the driving of the pile, which can prevent the diagonal driving.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 is a planned construction line of a circular pit to be constructed. The planned construction line 1 is circular, a center member 2 is installed at the center position, and a ruler member 3 is attached to the center member 2. As shown in FIG. 2, the central member 2 includes a foundation pile 4 placed so as to coincide with the center of the circular pit, a central shaft 5 erected on the foundation pile 4, and a periphery of the central shaft 5. The rotary cylinder 6 is provided so as to be rotatable. The rotary cylinder 6 is intermittently rotated by one pitch of the pile 10 by a rotary drive source (not shown) or manually.

As shown in FIG. 1, the ruler member 3 includes an arm portion 7 extending in the radial direction of the circular pit and the arm portion 7.
And a guide portion 8 attached to the tip portion of the.
As shown in FIG. 2, the arm portion 7 has its base end portion attached to the rotary cylinder 6 of the central member 2, and rotates together with the rotation of the rotary cylinder 6. As shown in FIG. 3, the guide portion 8 is curved with a curvature approximately equal to the curvature of the circular pit, and the pile 10 is guided and driven while sliding along the outer surface of the guide portion 8. The whole length of the ruler member 3 including the arm portion 7 and the guide portion 8 is substantially equal to the radius of the circular pit, and the pile driving position is set every time the center member 2 is turned to rotate. Specify.

In FIG. 2, reference numeral 9 is a rotary encoder mounted above the central shaft 5 of the central member 2. The rotary encoder 9 measures the rotation angle of the rotary cylinder 5, that is, the turning angle of the ruler member 3. As a result, the rotation of the rotary cylinder 5, that is, the turning of the ruler member 3, causes the pile 1 to rotate.
It can be controlled so that it is performed for every 1 pitch of 0.

Construction of a circular pit having such a configuration will be described. First, the first pile 10 made of H steel is driven while sliding along the guide portion 8 of the ruler member 3. After this driving, the rotary cylinder 5 of the center member 2 is rotated by the pitch of one pile, and the ruler member 3 is swung by the same pitch. The ruler member 3 has a length substantially equal to the radius of the circular pit, and the outer surface of the guide portion 8 moves along the scheduled construction line 1. Therefore, the placement position of the next pile is specified by the ruler member 3, and by placing the next pile 10 while sliding it along the outer surface of the guide portion 8, the next pile is accurately placed at a predetermined position. Can be installed. In this placement,
As shown in FIG. 3, the index mark 8a is formed on the upper surface of the guide portion 8.
By arranging and placing the next pile 10 so as to be positioned between the index marks 8a, the pile 10 can be placed at a more accurate position.

In this embodiment as described above, the ruler member 3 has a length substantially equal to the radius of the circular pit, and the ruler member 3 rotates with the rotation of the central member 2 so as to have a pitch of one pile. Since it turns in steps, the driving position of the pile can be easily and accurately determined. For this reason, it is possible to perform the placement with high accuracy, it is possible to quickly identify the placement position, the work efficiency is improved, and the number of workers can be reduced.

In FIG. 2, reference numeral 20 is a measuring means attached to the upper end of the central member 2. This measuring means 2
0 emits a light flux 11 such as a laser beam to the pile 10 during driving, and measures the tilt angle of the pile with respect to the verticality from the reflected light flux. FIG. 4 shows the internal structure of the measuring means 20. A horizontal laser range finder 21 and an obliquely standing laser range finder 22 are provided inside a box 23.
In addition, the laser marker 2 is provided on each of the laser rangefinders 21 and 22.
4 and 25 are attached. Control determination units 21a, 22a, 24a, 25a are connected to the laser rangefinders 21, 22 and laser markers 24, 25, respectively, and the control determination units 21a, 22a, 24a, 25a are used before and after the pile 10 with respect to verticality. Slope A and left and right slope B
(See FIG. 5) is measured.

Next, the measurement of the inclination by the measuring means 20 will be described. The pile 10 is driven along the guide portion 8 of the ruler member 3 in a state where the reflective tape 12 is attached to the surface of the circular pit on the center side as shown in FIG. This reflective tape 1
A center index 13 is marked on the 2 by printing or the like. Laser markers 24, 25 are provided for such piles 10.
Emits a laser beam and receives the reflected laser beam. The laser light from the laser markers 24 and 25 has a constant angle, and the arrow A direction of the pile 10 is adjusted so that the laser light reflected from the central index 13 of the reflective tape 12 is received by the laser markers 24 and 25. Meanwhile, the pile 10 is placed. As a result, the pile can be driven while correcting the longitudinal inclination with respect to the verticality.

On the other hand, the lateral inclination B is measured as follows. The laser rangefinders 21 and 22 emit laser light to the reflection tape 12, and the laser rangefinders 21 and 22 receive the reflected laser light reflected from the reflection tape 12. The distances d1 and d2 between the laser rangefinders 21 and 22 and the pile 10 are measured from the time required from the emission to the reception. FIG. 6 shows the relationship for calculating the tilt angle Φ in the horizontal tilt B of the pile 10 based on the distances d1 and d2, and θ is the relative angle between the laser rangefinders 21 and 22. From this relationship, the tilt angle Φ is calculated by the equation 1, and the driving is performed while adjusting the tilt direction B so that the tilt angle Φ is within the predetermined range.

[0017]

[Equation 1]

Thus, the pile can be driven while correcting the right and left inclination with respect to the verticality, and the verticality of the pile can be secured in combination with the correction of the front and rear inclination by the laser markers 24 and 25. It should be noted that when the tilt in the front-rear direction and the tilt in the left-right direction are equal to or larger than a predetermined range, a warning may be issued by an alarm sound or the like.

FIG. 7 shows another measuring means for measuring the diagonal driving of the pile 10. A beam member 30 extending in a direction substantially orthogonal to the extending direction of the ruler member 3 is attached to the central member 2,
Measuring members 31 and 32 are attached to both ends of the beam member 30. Pile 1 from each measuring member 31, 32
Laser beams in two directions with different angles with respect to 0 are emitted. Laser beams in two directions with different angles are emitted so as to be focused on two points on the pile 10. Furthermore, the measurement member 31,
32 emits laser light having different wavelengths. For example, the measuring member 31 emits red laser light and the measuring member 32 emits green laser light. Hereinafter, these laser lights will be distinguished by referring to them as P laser, Q laser, R laser, and S laser as shown in FIG.

In this structure, a center index 13 is marked on the driving pile 10. Further, the front-back inclination A with respect to the verticality is the central index 1 for each of the P, Q, R, and S lasers.
The pile 10 is driven while confirming that the pile 3 is irradiated. Thereby, the pile 10 can be driven while correcting the front-back inclination. Next, for the left and right tilt B, the P laser and the Q laser are pile 1
It is measured by observing focusing on one point of 0. FIG. 8 shows this state, and the pile 10 is driven without tilting left and right. On the other hand, as shown in FIG. 9, when the P laser and the Q laser are separately focused on the pile 10,
The stake 10 is tilted to the left, whereas when the P and Q lasers are focused on the front side of the stake 10, the stake 10 is tilted to the right, as shown in FIG. Therefore, in these cases, by adjusting the inclination angle of the driving so that the state shown in FIG. 8 is obtained, it is possible to perform the driving while correcting the lateral inclination. Thereby, the pile 10 can be driven while maintaining good verticality.

The present invention is not limited to the above embodiment, but can be applied to the construction of circular pits using steel sheet piles other than H steel, steel pipe piles and other piles.

[0022]

According to the present invention, since the ruler member having a length substantially equal to the radius of the circular pit is turned in accordance with the driving pitch of the pile, the driving position of the pile can be easily specified and the circular pit can be swiftly moved. Can be installed. Moreover, since the pile can be driven while sliding on the guide portion of the ruler member, accurate driving can be performed and a highly accurate circular pit can be obtained. Further, according to the present invention, the measuring means monitors the diagonal driving of the pile, so that the driving can be performed while correcting the angle of the pile, and the diagonal driving can be prevented beforehand.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a side view of one embodiment of the present invention.

FIG. 3 is a plan view showing the action of the ruler member.

FIG. 4 is a block diagram of an example of measuring means.

FIG. 5 is a perspective view showing the operation of the measuring means.

FIG. 6 is a side view showing the measurement of the lateral inclination.

FIG. 7 is a perspective view of another example of the measuring means.

FIG. 8 is a plan view showing the measurement of the lateral inclination by the measuring means.

FIG. 9 is a plan view showing a left tilt.

FIG. 10 is a plan view showing a right tilt.

[Explanation of symbols]

 1 Scheduled construction line for circular pit 2 Center member 3 Ruler member 7 Arm part 8 Guide part 10 Pile 20 Measuring means

Claims (2)

(57) [Claims] 1. A rotatable central member installed at the center of a circular pit that is constructed in a circular shape by driving a pile, and the central member having a length substantially equal to the radius of the circular pit. A circular pit construction device equipped with a ruler member that is attached and that has a guide part at the tip part that guides a driving pile. 2. A rotatable central member installed at the center of a circular pit which is circularly constructed by driving a pile, and a center member having a length substantially equal to the radius of the circular pit. A ruler member that is attached and has a guide part at the tip that guides the driving pile, emits light flux to the driving pile, and receives reflected light from the pile to measure the inclination angle of the pile with respect to verticality. A circular pit construction device equipped with a measuring means.