JPH04210183A - Hume pipe - Google Patents

Abstract

PURPOSE:To measure the condition of a pipe being laid using a sensor which is capable of measurement simply by moving inside the pipe by providing one or plural measurement pipe portions of small aperture integrally with the peripheral wall portion of a pipe main body. CONSTITUTION:A measuring pipe portion 12 is provided integrally with the pipe main body 10 of a Hume pipe in such a manner as projecting outside of the pipe main body 10. The measuring pipe portion 12 is disposed parallel to the direction of the axis of the pipe main body 10 and the aperture (d) of the measuring pipe portion 12 is so designed as to be large enough to pass a sensor 18 for position measurement therethrough. The pipe main body 10 is made of iron, aluminium, concrete or a synthetic resin, etc. As a result, the three-dimensional position of the Hume pipe itself can be measured during construction by inserting the sensor 18 into the measuring pipe portion 12 and moving the sensor 18 inside the portion 12 even if the Hume pipe has middle or large aperture, and the straightness and curve, etc. of the Hume pipe are simply and easily measured during construction work and efficient construction work is made possible and the number of processes required for measurement is greatly reduced whereby high economicity can be realized.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hume pipe used in civil engineering work. [0002]

2. Description of the Related Art Hitherto, as a construction method for humid pipes, for example, the mud water pressurized pipe propulsion method shown in FIG. 8 has been known. FIG. 8(a) shows the state before the start of excavation, in which the main body 1 is installed in the starting shaft 2 and the excavator 3 is set. Next, as shown in Fig. 8(b), the mud water adjusted in the tank on the ground is sent to the face via the mud pipe that also serves as the drive shaft using the mud pump, and the cutter at the tip of the excavator 3 excavates. The sediment is sent to the ground using a sludge pump. [0003] In the construction work of laying a humid pipe in accordance with such an excavation method, it is necessary to confirm while performing the excavation work that the pipe is being laid in accordance with the construction plan. For this reason, conventionally, the degree of curvature of the Hume tube has been measured by optical measurement using a laser or the like. [0004]

[Problem to be Solved by the Invention] However, while conventional optical measurements using lasers and the like are effective for straight lines, when measuring curved lines, frequent repositioning is required, resulting in poor work efficiency and accuracy. In addition, in the case of a diameter so small that no one can enter it, measurement is impossible because it cannot be replaced in the first place. Measurements over longer distances were not possible. [0005] Therefore, the inventor of the present application developed a so-called six-circle system as a device for measuring the installation condition of small-diameter piping, such as electrical piping, water supply and sewage pipes, and gas pipes that cannot be entered by people, for example, with an inner diameter of 500 mm or less. We are proposing a measuring device. This hole bending measurement device has an angular velocity sensor and an inclinometer built into the sensor inserted into the pipe, and is moved inside the pipe by a relatively flexible cable containing a transmission line, and the angular velocity sensor accompanying this movement within the pipe. The three-dimensional position of the entire pipe can be measured by measuring the azimuth angle obtained by integrating the output of the pipe and the inclination angle detected by the inclinometer. [0006] In order to measure the three-dimensional position of the propulsion machine and the hume pipe by applying such a hole bending measuring device to the propulsion method, it is necessary to install a measurement pipe for hole bending measurement in the hume pipe together with the mud feeding pipe and the mud removal pipe. A conceivable method is to provide a hole bending measuring tube and move the sensor of the hole bending measuring device inside this hole bending measuring tube to measure the hole bending. However, this method has the problem that it takes a lot of effort to connect and install the measurement tubes, and that if the measurement tubes are not firmly fixed, they will dangle and result in poor measurement accuracy. [00071] The present invention has been made in view of such conventional problems, and aims to provide a Hume pipe that enables measurement of the state of pipe installation using a sensor that can be measured simply by moving inside the pipe. purpose. [0008]

[Means for Solving the Problems] In order to achieve this object, the hume tube of the present invention is characterized in that one or more small-diameter measurement tube portions are provided integrally with the peripheral wall portion of the tube body. . Specifically, the measurement tube portion is integrally provided so as to protrude from the outside of the tube body. Alternatively, the measurement tube portion may be integrally provided so as to protrude from the inside of the tube body. Furthermore, the measurement tube portion may be integrally provided with its axis located at the center of the peripheral wall of the tube body and protruding outward and inward. Furthermore, the peripheral wall of the tube body may have uneven thickness, and the measurement tube portion may be embedded in the thick portion. [0009]

[Operation] In the fume tube of the present invention having such a configuration, since the small-diameter measurement tube section is provided integrally with the tube body, the position can be measured by guiding the inside of the small-diameter tube. By moving the sensor inside the measurement tube that is integrated into a medium- or large-diameter hume tube, you can easily measure the three-dimensional position of the hume tube itself and accurately check bends and straight sections. . [00101

[Embodiment] FIG. 1 is an explanatory diagram showing an embodiment of the present invention. In FIG. 1, 10 is the tube body of the Hume's canal. The tube body 10 is made of iron, aluminum, concrete, or synthetic resin, and the larger the diameter, the more ferrous or non-ferrous metal is used. Furthermore, in the case of large-diameter tubes, the inside of the tube body 10 may be lined with concrete. [00111 In the embodiment shown in FIG. 1, the measurement tube portion 12 is integrally provided with the tube body 10 of such a hume tube so as to protrude to the outside of the tube body 10. The measurement tube section 12 is arranged parallel to the tube body 10 in the axial direction, and the measurement tube section 12
The aperture d is formed to a size necessary for passing a sensor for position measurement inside. The total length of the tube body 10 has a specified length according to ordinary standards. Furthermore, although omitted in this embodiment, it goes without saying that a full-length joint structure may be provided at the end of the tube body 10. This joint structure is also integrally provided for the measurement tube portion 12. [0012] FIG. 2 is an explanatory diagram of a measurement state in which the position of a pipe is measured in construction work using the hume pipe of the present invention. Figure 2 takes as an example the same muddy water pressurized pipe propulsion method as shown in Figure 8. In FIG. 2, a measuring device 14 and a reel 15 are installed on a pedestal of the main body 1 installed in the starting shaft 2. A cable 16 is wound around the reel 15, and a measurement pipe section 12 is provided in which a sensor 18 connected to the tip of the cable 16 is integrated with the already installed humid pipe 100.
is inserted into the . The cable 16 is a highly flexible cable with a transmission line inside, and by unwinding and winding the cable 16 onto the reel 15, the cable 16 is
The sensor 18 can be moved within the measurement pipe section 12 of the sensor 18. [00L 3] In addition to the method of pushing the sensor in with a hard cable, self-propelled movement in which the sensor itself is provided with drive wheels, and movement in which the sensor is pulled by a cable using a winch and pulley are also considered. A rotary encoder 20 is installed on the rotation axis of the reel 15, and can measure the amount of movement of the cable 16. Position information from the sensor 18 and distance information from the rotary encoder 20 obtained via a transmission line built into the cable 16 are provided to the measuring device 14 via a signal line 22 via a rotary brush. [0014] The measuring device 14 is equipped with a computer as a calculation means, a CRT display as a display means, an XY plotter as a recording means, etc., and from the information obtained as the sensor 18 moves, for example, The movement locus of the sensor 18 with the entrance of 100 as the origin can be calculated and displayed. FIG. 3 shows the sensor 18 used for the measurement in FIG. 2 taken out. [0015] In FIG. 3, the sensor 18 is composed of a completely sealed cylindrical capsule 24, and a vibration isolator 25 made of rubber is attached to the tip of the capsule 24. As is clear from FIG. 2(b), a pair of sleds 26 are fixed to the bottom of the sensor 18 so that the sensor 18 can be guided in the direction of the tube within the measurement tube section 12 shown in FIG. The cable 16 is connected to the rear of the capsule 24 by a waterproof connector 28.
is connected. An angular velocity sensor and an inclinometer are provided inside the capsule 24. [0016] As shown in FIG. 2, this sensor 18 is inserted into the measurement pipe section 12 of the Huum tube 100, and the azimuth is calculated by integrating the output of the angular velocity sensor built into the sensor 18 every time it moves a certain distance by pushing with the cable 16. By measuring the angle and the inclination angle detected by the inclinometer, it is possible to measure, for example, the three-dimensional position of the measurement tube section 12 with the sixth inlet as the origin, that is, the three-dimensional position of the Huyum tube 100. . [00171 FIG. 4 is an embodiment configuration diagram showing another embodiment of the present invention, and in this embodiment, a plurality of measurement tube sections 12 are embedded in the peripheral wall portion of the tube body 10 of the Huum tube. It is characterized by: In this embodiment, one of the plurality of measurement tube sections 12 is connected to the sensor 1 as shown in FIG.
8 is used for position measurement, but the remaining measurement tube section 12 can be used for laying cables or for other purposes. Incidentally, three locations of the measurement pipe section 12 are indicated by broken lines, but the other locations are the same. [0018] FIG. 5 is an explanatory diagram showing another embodiment of the present invention. In the embodiment of FIG. 1, the measurement tube section 12 is integrally provided outside the tube body 10, The embodiment shown in FIG. 5 is characterized in that the measurement tube section 12 is integrally provided inside the tube body 10. If the measurement tube section 12 is provided inside the tube body 10 in this manner, the external shape of the hume tube is the same as the conventional one, so that the tube laying work etc. can be facilitated. [00191 FIG. 6 is an explanatory diagram showing another embodiment of the present invention, and shows the end surface of the hume tube. This embodiment is characterized in that the measurement tube portions 12 are integrally provided at four locations with the central portion of the peripheral wall of the tube body 10 as the axis, and the portion where the measurement tube portion 12 is formed is provided with the peripheral wall located on the inside and outside. It protrudes outward. Of course, in Fig. 6, the measurement pipe section is 1
The remaining measurement pipe section 12 can be used for other purposes. [0020] FIG. 7 is an explanatory diagram showing another embodiment of the present invention. In this embodiment, the peripheral wall of the tube body 10 has uneven thickness, and a measurement tube is installed in the thick part 32 due to the uneven thickness. It is characterized in that a section 12 is provided. In this embodiment, three measurement tube sections 12 are provided, one of which is used for measuring the position shown in FIG. 2, and the remaining two can be used for other purposes. [0021] [Effects of the Invention] As explained above, according to the present invention, since the small-diameter measurement tube section is provided integrally with the tube body, even if the tube is of medium or large diameter, By inserting a sensor into the measuring pipe part and moving it inside during construction, it is possible to measure the three-dimensional position of the Huyum pipe itself, making it easy to measure straight movement, bending, etc. during construction work of the Huyum pipe. This enables efficient construction work,
Furthermore, the number of man-hours required for measurement is significantly reduced, making it possible to achieve high economic efficiency.

[Brief explanation of the drawing]

[Fig. 1] An explanatory diagram showing an embodiment of the present invention

[Figure 2
】Explanatory diagram of measurement using the Huyum tube of the present invention

[Fig. 3] Explanatory diagram of the sensor used to measure the Hume's canal of the present invention

FIG. 4 is an explanatory diagram showing another embodiment of the present invention.

FIG. 5 is an explanatory diagram showing another embodiment of the present invention.

[Figure 6]
Example explanatory diagram showing another example of the present invention

FIG. 7 is an explanatory diagram showing another embodiment of the present invention.

[Figure 8] An explanatory diagram showing an example of the conventional humid pipe laying method

[Explanation of symbols]

10: Pipe body 12 measurement pipe part 1
4: Measuring device 15: Reel 16:
Cable 18: Sensor 20: Rotary encoder 22: Signal line 24: Capsule 26: Warp 28: Water pressure resistant connector 30: Thick wall part

[Figure 8]

Claims (5)

[Claims] 1. A Hume tube characterized in that one or more small-diameter measurement tube portions are provided integrally with the peripheral wall portion of the tube body. 2. The fume tube according to claim 1, wherein the measurement tube portion is integrally provided protruding from the outside of the tube body. 3. The fume tube according to claim 1, wherein the measurement tube portion is integrally provided protruding from the inside of the tube body. 4. The Hume tube according to claim 1, wherein the measurement tube portion is integrally provided with its axis located at the center of the peripheral wall of the tube body and protruding outward and inward. Hume tube. 5. The Hume tube according to claim 1, wherein the peripheral wall of the tube body has uneven thickness, and the measurement tube portion is embedded in the thick wall portion.