JP2693064B2 - Positioning and mounting device for precast concrete slab for tunnel lining - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning and mounting device applied to a tunnel lining method using a precast concrete slab.

[0002]

2. Description of the Related Art In Japanese Patent Application No. 3-262102, the present inventors have found that a concrete-filled portion has an opening on the opposite surface of a rock-shaped main body having a frame-shaped main body having a length obtained by dividing a tunnel lining length into plural parts. Is a formcasting precast concrete plate (hereinafter PC
We proposed a tunnel lining construction method in which rapid hardening concrete with good fluidity is injected and filled between the PC plate and the ground.

[0003]

[Problems to be Solved by the Invention]
When converting to C, it is difficult to mount the PC plate and position the mounting machine. The present invention has been proposed in view of such problems, and the purpose thereof is to:
It is a point to provide a positioning and mounting device for a PC plate for tunnel lining that can install a PC plate that also serves as a lining concrete formwork at a predetermined position on the ground by a control system.

[0004]

In order to achieve the above object, a positioning device for a precast concrete slab for tunnel lining according to the present invention is mounted on a base machine via a main boom turning actuator and a telescopic jack. A main boom, a precast concrete formwork plate holding frame supported at the tip of the main boom via a tilt adjustment jack and a swing actuator so as to be tiltable and swingable.
The PC form plate suction device mounted on the holding frame, the position measurement data in the tunnel of the base machine is input to calculate the trajectory of the tunnel design cross section, and the turning actuator, the expansion / contraction jack, and the inclination adjustment jack are calculated. It is composed of a control device for controlling.

[0005]

[Operation] The base machine is installed at an arbitrary position near the center of the tunnel, the coordinates of the installation position are measured, the cross section at the time of tunnel design and the tip position of the main boom are calculated with respect to the design point, and The data of the above is input to the control device to control the swing actuator of the main boom, the expansion / contraction jack, the tilt adjustment jack of the PC form plate, and the swing actuator to set the PC form plate at a predetermined position.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. A is a lining portion of the tunnel ground B, C is a tunnel lining machine, and D is a tunnel design cross section. Reference numeral 1 is a base machine of the tunnel lining machine C. A main boom 4 is swingably and telescopically mounted on a main boom swing actuator 2 disposed on the base machine 1 via a main boom telescopic jack 3. A PC form plate holding frame 5 is rotatably supported on the main boom 4 via a holding frame turning actuator 6, and a PC form plate holding frame tilt adjustment is provided between the holding frame 5 and the main boom 4. The jack 7 is installed. A PC mold plate suction device 8 is mounted on the PC mold plate holding frame 5.

FIG. 2 shows a control device, 11 is a hydraulic valve controller, 12 is a hydraulic unit, 13 is a control hydraulic cylinder for the main boom telescopic jack 3, 14 is a linear encoder for measuring the telescopic length of the jack 3, and 15 is a hydraulic encoder. A rotary encoder that measures the turning angle of the main boom turning actuator 6, and 16 is a linear encoder that measures the tilt angle of the PC frame holding frame 5, and each of the encoders 14,
The measured values of 15 and 16 are input to a computer 18 via a measuring device (A / D converter) 17. In the figure, 19 is a PC form plate that also serves as a lining concrete form.

Thus, an arbitrary position P near the center of the tunnel
The base machine 1 is installed at (x, y), the coordinates of the point P are measured, and the cross section at the time of tunnel design and the position (X, Y) of the tip Q of the main boom 4 are set at the design center (0, 0)
Computed by the following tunnel design section control data basic formula for the main boom telescopic jack 3 and PC
It is used as the control data for the form plate holding frame tilt adjustment jack 7.

Tunnel design cross-section control data basic formula Origin: Design center (x, y): Center coordinate of main boom α: Angle to the concrete placing point around the design center Counterclockwise with spring line as the base line is positive (0 ≦ α ≤ 360 °) θ ₁ : Boom rotation angle Positive clockwise with the vertical line as the base line (up to 180 ° ≤ θ ₁ ≤ 180 °) θ ₂ : Angle between the tangent line at (X, Y) and the boom axis A clockwise direction as the base line is positive L: boom length Q (X, Y): position of PC form plate (x, y) = (Rcosα, Rsinα) L = (X−x) ² + (Y−y) ² θ ₁ = Cos ⁻¹ · Y−y / L, (X−x ≧ 0) θ ₁ = −Cos ⁻¹ · Y−y / L, (X−x <0) θ ₂ = π−θ ₁ −α, (Θ ₁ + α ≦ π) θ ₂ = 3π−θ ₁ −α, (θ ₁ + α> π).

When the control data is obtained, the control device of FIG. 2 operates the control computer 18 to set the PC form plate 19 at a predetermined lining position, and to put the fluid concrete in the ground B surface and the PC form. After pouring and filling between the plate 19 and hardening of the concrete, the structure moves to the next cross section and the lining of the tunnel is completed.

[0011]

According to the present invention, as described above, the main boom mounted on the base machine so as to be able to extend and contract and swing freely from any position in the tunnel, and the main boom is provided at the tip of the main boom. By controlling the tilt adjustment jerk that has been performed, the PC plate that also serves as the form supported by the tip of the main boom is accurately placed at a predetermined position, and the workability and the work accuracy of the tunnel lining method are improved.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of a positioning attachment device for a precast concrete slab for tunnel lining according to the present invention.

FIG. 2 is a control system diagram of the positioning attachment device.

FIG. 3 is an explanatory diagram of a basic equation for trajectory calculation according to the present invention.

[Explanation of symbols]

 A Lining department B Ground C Tunnel lining machine D Tunnel design section 1 Base machine 2 Main boom turning actuator 3 Main boom telescopic jack 4 Main boom 5 PC form plate holding frame 6 PC form plate holding frame Swing actuator 7 PC Form plate holding frame Inclination adjustment jack 8 PC form plate suction device 11 Hydraulic valve controller 12 Hydraulic unit 13 Main boom extension / extend jack control hydraulic cylinder 14 Linear encoder 15 Rotary encoder 16 Linear encoder 17 Measuring instrument (A / D converter) 18 Computer 19 PC formwork version

Claims (1)

(57) [Claims] 1. A main boom mounted on a base machine via a main boom swing actuator and a telescopic jack, and a precast supported at the tip of the main boom so as to be able to swing in a tilting manner via a tilt adjusting jack and a swing actuator. A concrete form plate holding frame, a PC form plate adsorbing device mounted on the holding frame, position measurement data in the tunnel of the base machine are input to calculate the trajectory of the tunnel design cross section, and the turning actuator and A positioning and mounting device for a precast concrete slab for tunnel lining, comprising a control device for controlling expansion / contraction jack and tilt adjustment jack.