WO2003044463A1

WO2003044463A1 - Cross-section measuring equipment

Info

Publication number: WO2003044463A1
Application number: PCT/JP2001/010072
Authority: WO
Inventors: Takaharu Tomii
Original assignee: Develo Inc.
Priority date: 2001-11-19
Filing date: 2001-11-19
Publication date: 2003-05-30

Abstract

A cross-section measuring equipment (10) comprising a slider (50) supported by an measuring device (12), a mechanism (40) for moving the slider (50) in a specified horizontal direction orthogonal to the vertical axis (16) of the measuring device (12), a laser range finder (60) supported by the slider (50) through a shaft (58) extending in parallel with the specified horizontal direction and measuring the distance in a direction orthogonal to the shaft (58), and mechanisms (62, 64, 66) for rotating the laser range finder (60) about the shaft (58). Inner hollow cross-section of a tunnel can be measured easily with high reliability using this equipment.

Description

Description Cross-section measurement device Technical field

The present invention relates to a cross-section measuring device for measuring a cross-sectional shape of a space. In particular, the present invention relates to a cross-section measurement device that can accurately measure an existing tunnel cross section (interior cross section). Background art

Especially in mountain tunnel construction, it is necessary to measure the cross section immediately after the tunnel excavation and confirm its deformation, and take appropriate measures according to the degree of deformation. Therefore, as a method of measuring the cross section of the tunnel and the displacement in the sky or the amount of settlement of the top, etc., the displacement of a plurality of targets fixed to a predetermined tunnel cross section is measured by a surveying device such as a transit. I have.

However, in this method, the surveying instrument must be installed at a position away from the cross section where the target is fixed, and the target must be collimated diagonally. As a result, the measured values of the amount of displacement in the interior sky fluctuated significantly due to slight reading errors in the horizontal angle and vertical angle, and the obtained results were of low reliability. Disclosure of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a cross-section measuring apparatus that can easily and highly reliably measure a cross section of an inner space such as a tunnel.

Specifically, the cross-section measuring device of the present invention comprises a slider (50) supported by a surveying device (12), and a slider (50) which is arranged in a predetermined horizontal direction orthogonal to a vertical axis (16) of the surveying device (12). And a horizontal moving mechanism (40) for moving the slider in a direction perpendicular to the horizontal axis (58) supported by the slider (50) via a horizontal axis (58) extending in parallel with the predetermined horizontal direction. The laser range finder (60) for measurement and the rotation mechanism (62, 64, 66) that rotates the laser range finder (60) about the horizontal axis (58) Thus, it is configured. According to the cross-section measurement device configured as described above, the shape of the vertical cross-section including the measurement position can be accurately and reliably measured at the measurement position. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view of a cross-section measuring device according to the present invention.

FIG. 2 is a perspective view of a driving mechanism included in the cross-section measuring device of FIG.

FIG. 3 is a front view illustrating the operation of the laser range finder.

Figure 4 is an explanatory diagram of a method for measuring the inner slash surface of a tunnel. Preferred embodiments of the invention

FIG. 1 shows an oblique view of a spatial cross-section measuring device according to the present invention. The spatial cross-sectional measuring device 10 shown therein includes a surveying device 12 and a distance measuring device 14. In the present embodiment, the surveying device 12 uses a total station incorporating a microcomputer, and includes a surveying device main body 20 including a vertical axis 16 and an Eihei axis 18, and a vertical axis A telescope 24 including a collimating axis 22 passing through the intersection of the horizontal axis 18 and the horizontal axis 18, wherein the telescope 24 is located around the horizontal axis 18. It is supported rotatably.

The distance measuring device 14 has a lower structure (lower housing) 26 fixed to the upper part of the surveying device main body 2 ◦ and an upper structure (upper housing) 28 supported by the lower structure 26. The upper structure 28 is movable relative to the lower structure 26 in a direction parallel to the horizontal axis 18. In the present embodiment, the lower structure 26 and the upper structure 28 have a shape in which a cylindrical body having hemispherical portions at both ends is cut along a plane parallel to the center axis thereof, but is limited to such a shape. Not something. Further, in the present embodiment, the upper structure 28 is formed with two light-transmitting windows 30 and 32 extending in the circumferential direction, so that light can be emitted and received through these light-transmitting windows. It is.

In order to movably support the upper structure 28 with respect to the lower structure 26, the lower structure 26 has a moving mechanism 40 shown in FIG. The moving mechanism 40 includes two guide rods 42 arranged in parallel with the horizontal axis 18 (see FIG. 1), and these two guide rods. It has a pair of support bases 44 for fixing both ends of 42 to the lower structure 26. One screw rod (screw shaft) 46 is further disposed between the two guide rods 42, and the screw rod 46 is rotatably supported by the support base 44. . In addition, the screw rod 46 is mounted on the support base 44. The front and rear are fixed to the lower structure 26. The rotary motor (horizontal movement motor) 48 is indirect or directly via a reduction mechanism (not shown). Is drivingly connected.

The upper structure 28 has a slider 50, and the housing of the upper structure 28 is supported by the slider 50. As shown in FIG. 3, the slider 50 has a guide hole 52 corresponding to the two guide holes 42 and a screw hole 54 corresponding to the screw rod 46. Through guide rods 4 2 and screw holes 5

A screw rod 46 is fitted to 4 so that it can move in the horizontal direction based on the rotation of the screw rod 46. Returning to FIG. 2, the slider 50 has a flange 56 fixedly supported on the end face from which the guide rod 42 and the screw rod 46 project. These flanges 56 rotatably support a rotating shaft 58 arranged parallel to the horizontal shaft 18 (see FIG. 1), and the laser ranging device 60 is fixed to the rotating shaft 58. ing. The flange 56 also supports a forward / reverse rotating motor (rotating motor) 62, and its drive shaft (output shaft) 64 and rotating shaft 58 use a pulley or gear. It is drive-coupled through.

The laser range finder 60 has a housing 68, and the housing 68 is supported by a rotating shaft 58. The housing 68 includes a laser oscillator 72 that emits a visible light laser 70 in a direction perpendicular to the horizontal axis 18 (see FIG. 1) and the rotation axis 58, and a laser 70 that is emitted from the laser oscillator 72. Receiving unit 74 for imaging the irradiation position (laser spot) of the laser, and a calculating unit (not shown) for calculating the distance from a predetermined position of the laser range finder 60 to the irradiation position from the laser spot image received by the image receiving unit 74. Z) As the laser range finder 60, a laser distance sensor (LASERVI EW LZ-203, LZ208, LZ210, LZ220) provided by Motoii Electric Co., Ltd. is available. It can be suitably used.

When measuring the inner cross section of a tunnel using the measuring device 10 having such a configuration, as shown in Fig. 4, the measuring device 10 is installed near the target tunneling line 80. I do. At this time, there is no need to accurately align the measuring device 10 with the target measurement line 80. Next, the coordinates (own position) at which the surveying device 10 is installed are determined using the existing reference points (not shown). Then, a displacement (δ) between the position of the surveying device 10 and the survey line 80 in the direction along the center line 84 of the tunnel 82 is calculated. Next, the surveying instrument main body 20 is rotated, and the horizontal axis 18 (see Fig. 1) of the surveying instrument 10 is set parallel to the center of the tunnel f spring 84. Thereafter, the horizontal movement motor 48 (see FIG. 2) is driven based on a command from the input unit 86 of the surveying device 12 shown in FIG. 1 or a portable computer 88 connected to the surveying device 12. Then, the slider 50 is moved to make the center of the laser oscillator 72 (the emission position of the laser 70) coincide with the measurement line 80. The above operation completes the preparation for the measurement of the cross-section inside the tunnel.

The measurement of the inner space section is performed based on an instruction from the input unit 86 of the surveying device 12 or a portable computer 88 connected thereto. When the start of measurement is instructed by any of the devices, the rotary motor 62 is driven to set the laser range finder 60 to the initial position (the position shown by the one-dot chain line in FIG. 3). Then, the laser range finder 60 is rotated to the end position (the position P ₂ shown by a two-dot chain line in FIG. 3) in the embodiment 2. In the present embodiment, the laser range finder 60 is moved right and left around the vertical axis. Each angle can be rotated up to 135 °, however, this angle is not limited, while the laser rangefinder 60 is rotating, the laser oscillator 72 of this laser rangefinder 60 is visible. Emit light laser 70. Emitted visible light laser 70 hits the inner surface of tunnel on measurement line 80, and generates a laser spot.These laser spots are sequentially imaged by image receiving unit 74, and laser ranging is performed. The distance from the predetermined position of the heater 60 to the laser spot is The calculation result (data) is stored in a built-in memory (not shown) of the surveying instrument 12. The calculation result is transmitted to the portable computer 88 and, if necessary, the portable computer is used. It may be stored in the memory of the computer 88. If the portable computer 88 is communicably or wirelessly connected to a central management computer 90 installed at a remote location, the de taken into mold computer 8 ⁸ -. data can also be stored and transmitted to the central management computer 9 0, if necessary, based on the obtained data, the display 9 2 central computer 9 0 The cross section of the inside of the tunnel may be displayed. It is preferable to display it in comparison with the cross section.

As is clear from the above description, according to the measuring device 10 of the present invention, even if the surveying device 12 does not exactly match the survey line, the surveying device and the surveying device are measured by the ranging device 14. The position of the tunnel can be easily corrected, and the target cross section in the tunnel can be measured on the cross section. Therefore, the shape of the inner cross section obtained is extremely accurate and highly reliable.

In the above description, the case where the cross section inside the tunnel is measured using the cross section measuring device of the present invention has been described. However, the inside cross section other than the tunnel can be measured in the same manner. In the case of surveying the inner section of the tunnel, it is of course possible to measure the inner section at an arbitrary location other than the predetermined survey line. Further, the cross-section measuring device of the present invention can measure not only a tunnel cross-section but also a vertical cross-section.

Further, in the above description, data is transmitted / received to / from another computer using the portable computer 88. However, the communication card can be attached to / detached from the surveying instrument 12 and the data can be transmitted / received using this communication card. May be transmitted and received.

Further, as shown in FIG. 1, another laser oscillator 94 is provided in the lower structure (lower housing) 26 or the upper structure (upper housing) 28 of the distance measuring device 14. Alternatively, the laser light 96 oscillated from side to side may be oscillated in parallel with the collimating axis 22. Thus, with the horizontal axis 18 set parallel to the tunnel center line, the corresponding tunnel side wall can be marked by irradiating the laser beam 96 in a direction orthogonal to this. It is preferable that the laser light 96 oscillated from the laser oscillator 94 crosses the vertical axis 16.

Claims

The scope of the claims

1. a device that measures the cross section of a space,

A slider (50) supported by a surveying device (12);

A horizontal movement mechanism (40) for moving the slider (50) in a predetermined horizontal direction orthogonal to the vertical axis (16) of the surveying device (12);

A laser range finder (60) supported by the slider (50) via a horizontal axis (58) extending parallel to the predetermined horizontal direction and measuring a distance in a direction perpendicular to the horizontal axis (58);

A cross-section measuring apparatus (1.0), comprising: a rotation mechanism (62, 64, 66) for rotating a laser range finder (60) about a horizontal axis (58).