JP3015294B2 - In-pipe installation equipment for propulsion surveying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for installing surveying equipment in a pipe in a propulsion method, and more particularly, to laying a buried pipe by propelling an excavator and a buried pipe sequentially connected to the rear thereof into the ground. This is a curved mud pressurized propulsion method for small-diameter pipes, and relates to an in-pipe installation device of a surveying instrument for measuring a horizontal position or a vertical position of an excavator or a buried pipe.

[0002]

2. Description of the Related Art In a propulsion method, an excavator and a buried pipe sequentially connected to the rear of the excavator are propelled into the ground. It is very important for the propulsion method whether the position and posture of the excavator and the buried pipe to be propelled in the ground are correctly laid along the designed laying route. Further, in a propulsion method using an excavator such as a muddy pressurization type propulsion method, the propulsion speed is relatively high, and it is necessary to always grasp the position and attitude of the excavator and the buried pipe. Therefore, the following method is generally used as a method for measuring the positions of the excavator and the buried pipe during the propulsion construction.

[0003] As the method, a target installed on the excavator is collimated by an optical surveying instrument installed in the starting shaft, or a target is irradiated with laser light from a laser transit installed on the starting shaft. A method of remotely monitoring a laser spot with a TV camera or the like is used.

[0004]

However, in the case of curve propulsion, the target cannot be collimated from the starting shaft, and the survey can be performed without the irradiated laser beam being received by the target installed on the excavator. Was gone. For this reason,
A plurality of laser irradiators and receivers are installed in the buried pipe at a predetermined distance at a distance where optical surveying is possible, and the bending angles of each laser irradiator are measured to determine the positions of the excavator and the buried pipe at the tip. . A method of measuring attitude was used. As a method of installing a surveying instrument such as a laser irradiator in a buried pipe, a method of installing a bracket (a gantry) on a side wall of the buried pipe and fixing it thereon is used.

However, in the above-mentioned method, when a small-diameter pipe is to be curved, no person can enter the buried pipe. Therefore, after the propulsion is completed, a surveying instrument such as a laser irradiator installed in the buried pipe is collected from the pipe. The problem that it cannot be removed,
Optical surveying was not possible with small diameter pipes because it was difficult to install surveying equipment in the case of small diameter pipes.

Therefore, the present invention makes it easy to collect surveying equipment such as a laser irradiator installed in a buried pipe even in the case of curving a small-diameter pipe. It is intended to provide an in-pipe installation device of a surveying instrument that can be removed.

[0007]

That is, according to the present invention, there are provided a mud feeding pipe and a mud discharging pipe at predetermined positions of two mud feeding pipes and mud discharging pipes arranged in parallel in a buried pipe. A slide aid pipe penetrating in the form of glasses so that it can freely slide back and forth, a mount for fixing the glasses-like slide aid pipe above the slide aid pipe and mounting a surveying instrument, and the slide It is constituted by a slide width control ring having a diameter larger than that of the subsidizing pipe and fixed at predetermined intervals before and after the slide subsiding pipe to a mud feeding pipe and a mud discharging pipe.

As the slide-assisting pipe, a pipe having a diameter such that a pipe for feeding mud and a pipe for discharging mud can slide freely back and forth may be used, and a steel pipe or the like is used.

The mount is constituted by a smooth plate on which an eyeglass-like slide assisting pipe penetrating through a mud feeding pipe or a mud discharging pipe is fixed, and an optical surveying instrument can be mounted on an upper part thereof. As a fixing method of the optical surveying instrument, a generally used fixing method using bolts and nuts may be used.

The slide width control ring is fixed to the front and rear sludge pipes at a distance at which the sludge pipe and the sludge pipe can slide back and forth in consideration of the curve radius of the buried pipe. . For mounting the slide width control ring,
After the propulsion is completed, a method is used in which the divided ring is tightened and fixed with bolts, nuts, or the like so as to be easily removed.

When the buried pipe enters the curved section, the inner and outer lengths are different due to the outer opening of the buried pipe joint, and the outer pipe moves more than the inner pipe. By the slide assistance pipe of the present invention, the pipe for sending mud and the pipe for discharging mud can smoothly move forward and backward by a predetermined distance. For this reason, the optical surveying instrument can be maintained without being influenced by the piping for mud feeding and the piping for mud discharging. Also,
After the propulsion is completed, removal of the optical equipment etc., when pulling out the mud feeding pipe and the mud discharging pipe, the slide aid pipe will slide to the length to the slide width control ring, but it will be stopped by the slide width control ring, It will be collected together with the mud feeding pipe and the mud discharging pipe.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are a plan view and a cross-sectional view for explaining an entire in-pipe installation apparatus 1 for a propulsion surveying instrument according to the present invention. In the buried pipe 9, a pipe 6 for sending mud and a pipe 7 for discharging mud are arranged in parallel. A slide assisting pipe 2 is provided in the mud feeding pipe 6 and the mud discharging pipe 7 at a predetermined position within a range in which a laser irradiator or the like as a propulsion surveying instrument 8 can be seen. The slide assisting pipe 2 is fixed at a lower part of a circular plate-like base 3. The propulsion surveying instrument 8 is mounted on the gantry 3 and fixed with bolts, nuts, and the like. The disposition positions of the mud feeding pipe 6 and the mud discharging pipe 7 may be switched on the left and right depending on the model of the excavator 10 and the like.

FIG. 3 shows an in-pipe installation device 1 of the propulsion surveying instrument 8.
It is a longitudinal cross-sectional view explaining. Slide width control rings 4 and 5 are fixed before and after the slide assisting pipe 2 at predetermined intervals so as to be slidable according to the radius of the curve of the buried pipe 9. Slide width control ring 4,
As the structure 5, a method is used in which the structure is divided so as to be easily removed, and the structure is tightly fixed with bolts, nuts and the like.

FIG. 4 is a plan view for explaining the situation of the in-pipe installation device 1 when the straight section is propelled. Assuming a design curve radius of the buried pipe, the in-pipe installation apparatus 1 is installed at a position at a predetermined distance from the excavator 10. Normally, the lengths of the mud feeding pipe 6 and the mud discharging pipe 7 are manufactured in accordance with the length of the buried pipe 9 and are connected in parallel with the connection of the buried pipe. In the straight section, the lengths of the mud feeding pipe 6 and the mud discharging pipe 7 do not change, and the propulsion burying is performed without deflecting the pipe installation device 1.

FIG. 5 is a plan view for explaining the situation of the in-pipe installation device 1 during curve propulsion. The excavator 10 is deflected in a predetermined direction from the start point of the curve and excavates. The buried pipe 9 following the excavator 10 follows the excavation hole formed by the excavator 10 and forms a curve. The buried pipe 9 is opened outside the curve of each joint portion to form a curve, and in the buried pipe 9, each of the pipes 6 and 7 slides together with the formation of the curve. The amount of this slide increases toward the outside of the curve, and the buried pipe 9
In the mud feeding pipe 6 and the mud discharging pipe 7 disposed inside the pipe, the mud feeding pipe 6 outside the curve in this embodiment slides more. The slide aid pipe 2 is provided with a diameter having a margin with respect to the slide of the mud feeding pipe 6 and the mud discharging pipe 7, so that the mud feeding pipe 6 and the mud discharging pipe 7 slide freely. it can.

Next, removal of the surveying equipment 8 such as the in-pipe installation device 1 for laser surveying and the laser irradiator. The recovery method will be described. When the propulsion burial is completed, the excavator 10 is removed from the arrival shaft, and the mud feed pipe 6 and the exhaust pipe 7 are collected while being pulled from either the start shaft or the arrival shaft. As the mud feeding pipe 6 and the mud discharging pipe 7 are pulled, the slide assisting pipe 2 slides and tries to remain at the place, but by contacting one of the front and rear slide control rings 4 and 5, , And are collected by being pulled together with the respective pipes 6 and 7.

[0017]

As described above, the in-pipe installation apparatus according to the present invention can be used for propulsion surveying in the case of curving a small-diameter pipe.
Since the mechanism is capable of freely responding to different slides due to mud feeding pipes and mud draining pipes in the buried pipes, there is no longer any need to largely deflect the pipe installation apparatus or apply an excessive deflection force. In addition, with the slide control ring of the in-pipe installation device, the in-pipe installation device and the propulsion surveying equipment can be easily collected together with the removal of the mud feeding pipe and the mud discharging pipe.

[0018]

[Brief description of the drawings]

FIG. 1 is a plan view illustrating an entire in-pipe installation apparatus of a propulsion surveying instrument according to the present invention.

FIG. 2 is a cross-sectional view illustrating a pipe installation device of the propulsion surveying instrument of the present invention.

FIG. 3 is a vertical cross-sectional view illustrating an entire in-pipe installation apparatus of the propulsion surveying instrument of the present invention.

FIG. 4 is a plan view illustrating a state of the in-pipe installation device when the straight section is propelled.

FIG. 5 is a plan view for explaining the situation of the in-pipe installation device when propelling a curved part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe inscriber 2 Slide aid pipe 3 Stand 4 Front slide control ring 5 Rear slide control ring 6 Mud feeding pipe 7 Mud draining pipe 8 Propulsion surveying equipment 9 Buried pipe 10 Excavator

Claims (1)

(57) [Claims] An excavator and a buried pipe following the excavator are sequentially propelled and buried from a starting shaft to lay a pipeline in the ground. An apparatus for installing, in a pipe, a device for optically measuring a horizontal or vertical position, wherein the mud feeder is disposed at a predetermined position of a mud feed pipe and a mud discharge pipe arranged in parallel in a buried pipe. A slide aid pipe penetrating in the form of glasses so that the piping for drainage and the drainage pipe can slide freely back and forth, and a slide aid pipe in the form of glasses is fixed above the slide aid pipe, and a surveying instrument is mounted. And a slide width control ring having a diameter larger than that of the slide aid pipe and fixed to the mud feeding pipe and the mud discharge pipe at predetermined intervals before and after the slide aid pipe. Pipe installation apparatus propulsion surveying instruments, characterized in that.