Tunnel segment circumferential and longitudinal slab staggering measuring device

Abstract

The utility model belongs to the technical field of tunnel segments, and discloses a tunnel segment circumferential and longitudinal slab staggering measuring device. The device comprises a movable base trolley, a supporting vertical plate is fixed to the upper portion of the movable base trolley, reinforcing ribs are symmetrically distributed on the two sides of the supporting vertical plate, a first driving motor is installed on the upper portion of the supporting vertical plate, the first driving motor controls and drives a stand column which is installed on the top of the supporting vertical plate and can move up and down, and a columnar cross beam penetrates through the stand column. The two ends of the columnar cross beam are connected with a positioning disc and a positioning combination device used for measuring the offset between segment rings and the offset of the longitudinal staggered slab respectively. The device is complete in structural design, can be directly put into use, does not need secondary installation, shortens the time of field operation, saves manpower and material resources required by measurement, and is high in economic benefit.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel segment technical field, especially relate to a tunnel segment ring and longitudinal misalignment measuring device. BACKGROUND

[0002] The shield tunnel construction process is often accompanied by the problems such as misalignment and excessive opening of segment joints, which not only affect the aesthetic level, but also shorten the service life, threaten the operation safety and reduce the waterproof performance. Therefore, the detection of segment misalignment is an important content of tunnel deformation monitoring.

[0003] Segment misalignment mainly includes longitudinal misalignment and ring misalignment. Longitudinal misalignment refers to the misalignment between two adjacent rings of segments, and ring misalignment refers to the misalignment between segments in the same ring. The detection methods of segment misalignment on site mainly include manual ruler measurement, total station and frame station type three-dimensional laser scanner, etc.

[0004] Manual ruler measurement is a method of using a plug gauge for on-site measurement. The arch top needs to be detected by means of a lifting trolley, and the opening of the segment joint is generally measured by a vernier caliper. The efficiency and coverage of the detection are relatively low.

[0005] The total station method is to realize positioning measurement by setting up a total station, determine the reference point, and measure each ring and point. The professional level of the measurement personnel is required to be high.

[0006] The frame station type three-dimensional laser scanner method can obtain million-level point cloud data instantly, and the detection efficiency is high. However, there may be a phenomenon of weak scanning density in the position between the two measuring stations, which may lead to insufficient measurement data and large errors. Therefore, it is of practical significance to design a device that can simply and intuitively measure the longitudinal and ring misalignment of segments. UTILITY MODEL CONTENTS

[0007] In order to overcome the problems in the related art, the utility model discloses an embodiment of a tunnel segment ring and longitudinal misalignment measuring device.

[0008] The technical solution is as follows: a tunnel segment ring and longitudinal misalignment measuring device, comprising a movable base trolley, a support vertical plate is fixedly supported on the upper part of the movable base trolley, reinforcing ribs are symmetrically distributed on both sides of the support vertical plate, a first driving motor is installed on the upper part of the support vertical plate, the first driving motor drives a vertically movable column installed on the top of the support vertical plate, a columnar cross beam penetrates through the column, and a positioning disc and a positioning combination device for measuring the ring and longitudinal misalignment offset of segments are connected to the two ends of the columnar cross beam respectively.

[0009] Further, the positioning combination device comprises a vertical plate blindly embedded on the outer side of the columnar cross beam, a second driving motor is fixedly arranged on the vertical plate through a square plate, a first driving gear is sleeved on the output rotating shaft of the second driving motor, and the first driving gear is in mesh with a first external gear sleeved on a first columnar rotating shaft;

[0010] The rotation of the first columnar rotating shaft drives the cylindrical member, one side of the cylindrical member is fixedly provided with a third driving motor through a square plate, a second driving gear is sleeved on the output rotating shaft of the third driving motor, and the second driving gear is in mesh with a second external gear;

[0011] A second columnar rotating shaft is sleeved on the second external gear, the lower end of the second columnar rotating shaft is rotatably arranged on the thickness surface of the cylindrical member, the upper end of the second columnar rotating shaft is further sleeved with a rectangular turntable, the rectangular turntable is located on the upper portion of the second external gear, and a first laser range finder, a second laser range finder and a laser positioner are arranged on the rectangular turntable.

[0012] The first columnar rotating shaft is blindly embedded in the inner side of the vertical plate.

[0013] The first laser range finder and the second laser range finder are respectively arranged at different ends of the rectangular turntable.

[0014] The stand column is provided with an elevation scale.

[0015] A groove is arranged in the upper end of the stand column and penetrates the columnar cross beam.

[0016] The laser beam of the laser positioner is aligned with the position of the pipe piece joint.

[0017] In combination with all the above technical solutions, the tunnel pipe piece ring and longitudinal joint offset measuring device has the beneficial effects that the device is simple and convenient to operate, is reasonable and effective, and can quickly and effectively detect the tunnel pipe piece ring and longitudinal joint offset.

[0018] The tunnel pipe piece ring and longitudinal joint offset measuring device provided by the utility model moves to the position of the tunnel pipe piece to be detected by relying on the base trolley, drives the motor to control the up-down movement of the stand column, refers to the elevation size marked on the stand column, ensures that the center elevation of the positioning disc coincides with the elevation position of the tunnel axis, drives the meshed external gear by controlling the driving gear through the motor, makes the cylindrical member fixedly connected to the columnar rotating shaft and the rectangular turntable rotate, determines the position of the pipe piece joint by the laser positioner, measures the distances r1 and r2 of the pipe piece by the two-end laser range finders, and obtains the pipe piece joint offset according to the corresponding operation formula. The utility model can directly and quickly obtain the pipe piece joint offset, does not need subsequent complex data processing, and greatly improves the detection efficiency.

[0019] The utility model discloses rely on three drive motors, control drive the vertical column up and down movement or drive gear rotation, simple and convenient operation, the structure design is reasonable, and the technical level requirement of operator is not high.

[0020] The utility model discloses vertical column is driven along vertical telescopic by motor, need not climb to the very high position place debugging equipment, and the safety is higher.

[0021] The utility model can measure tunnel segment ring and longitudinal misaligned offset respectively, and the design has comprehensiveness and rationality.

[0022] The utility model discloses complete structure design, can directly put into use, need not secondary installation, shorten the time of field operation, save the manpower, material resources needed in measurement, and economic benefit is high. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure;

[0024] Figure 1 It is the tunnel segment ring and longitudinal misaligned measuring device schematic drawing provided by the utility model embodiment;

[0025] Figure 2 It is the tunnel segment ring and longitudinal misaligned measuring device schematic drawing provided by the utility model embodiment; Figure 1 The tunnel segment ring and longitudinal misaligned measuring device in device a's enlarged schematic view;

[0026] Figure 3 It is the tunnel segment ring and longitudinal misaligned measuring device actual working principle schematic drawing provided by the utility model embodiment;

[0027] Figure 4 It is the pipe piece ring and longitudinal misaligned measuring principle schematic drawing provided by the utility model embodiment;

[0028] Figure 5 It is the pipe piece ring and longitudinal misaligned measuring principle schematic drawing provided by the utility model embodiment;

[0029] Figure 6 It is the different pipe piece ring and longitudinal misaligned offset measuring schematic drawing provided by the utility model embodiment;

[0030] In the figure: 1. movable base trolley; 2. reinforcing ribs; 3. supporting vertical plate; 4. first drive motor; 5. column; 6. positioning disk; 7. columnar beam; a. positioning assembly; 8. vertical plate; 9. second drive motor; 10. first drive gear; 11. first external gear; 12. first cylindrical rotating shaft; 13. cylindrical member; 14. second drive gear; 15. second external gear; 16. rectangular turntable; 17. first laser rangefinder; 18. second laser rangefinder; 19. laser locator; 20. third drive motor; 21. second cylindrical rotating shaft. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Example 1, as Figure 1 As shown, the tunnel segment circumferential and longitudinal misalignment measuring device provided by the embodiment of the present invention includes:

[0033] A movable base trolley 1 has a fixed support vertical plate 3 on the upper portion, with reinforcing ribs 2 symmetrically distributed on both sides. A first drive motor 4 is installed on the upper portion of the support vertical plate 3. The first drive motor 4 controls and drives a column 5 installed on the top of the support vertical plate 3. A columnar crossbeam 7 passes through the column 5, and its two ends are respectively connected to a positioning disc 6 and a positioning assembly a;

[0034] like Figure 2 As shown, the positioning assembly device a mainly includes a vertical plate 8 blindly embedded on the outer side of the columnar crossbeam 7, and a second drive motor 9 is fixed on the vertical plate 8 through a square plate. The function of the second drive motor 9 is to control the rotation of the first columnar shaft 12. The output shaft of the second drive motor 9 is provided with a first drive gear 10, and the first drive gear 10 is engaged with the first external gear 11 mounted on the first columnar shaft 12; the first columnar shaft 12 is blindly embedded on the inner side of the vertical plate 8; the cylindrical member 13 is driven by the rotation of the first columnar shaft 12, and a third drive motor 20 is fixed on one side of the cylindrical member 13 through a square plate. The output shaft of the third drive motor 20 is provided with a second drive gear 14, and the second drive gear 14 is engaged with a second external gear 15; the second external gear 15 is provided with a second columnar shaft 21, and the second columnar shaft 21 (as shown in FIG. Figure 6 ) is rotatably mounted on the thickness surface of the cylindrical member 13 (eg Figure 2), the upper end of the second columnar rotating shaft 21 is further sleeved with a rectangular rotating disc 16, the rectangular rotating disc 16 is located on the upper part of the second external gear 15, and the first laser range finder 17, the second laser range finder 18 and the laser positioner 19 are installed on the rectangular rotating disc 16. The first laser range finder 17 and the second laser range finder 18 are respectively located at different ends of the rectangular rotating disc 16.

[0035] For example, the main shaft of the first driving motor 4 controls the telescopic movement of the column 5 along the vertical direction, and the columnar cross beam 7 passes through the upper end groove of the column 5 and can move up and down along with the column 5.

[0036] The positioning disc 6 is combined with the tunnel section profile size and can move up and down along with the column 5 along the vertical direction, and according to the elevation scale on the column 5, the center elevation of the positioning disc 6 is ensured to coincide with the elevation position of the tunnel axis, so that the positioning and alignment are realized.

[0037] Preferably, the laser positioner 19 is used to align the position of the pipe joint, and the laser range finders on both sides are used to measure the distance to the pipe on both sides, and the difference between the two is the pipe offset deviation at the position.

[0038] Preferably, the rectangular rotating disc 16 can be rotated by relying on the third driving motor 20, and when the rectangular rotating disc 16 is rotated by 90°, the longitudinal offset of the pipe can be detected.

[0039] Working principle.

[0040] The tunnel pipe ring and longitudinal offset measuring device and the tunnel pipe ring and longitudinal offset measuring method thereof, comprising:

[0041] Step one: move the movable base trolley 1 to stop when the laser positioner 19 appears jumping fluctuation.

[0042] Specifically, first, the movable base trolley 1 is moved to the range of the pipe to be detected, the laser positioner 19 on the rectangular rotating disc 16 is turned on, and then the movable base trolley 1 is continuously moved to stop when the laser beam appears jumping fluctuation phenomenon, at this time, the pipe offset phenomenon occurs.

[0043] Step two: move the columnar cross beam 7 by relying on the first driving motor 4, until the center elevation of the positioning disc 6 coincides with the elevation position of the tunnel axis.

[0044] Specifically, the first driving motor 4 is rotated, the column 5 is telescoped along the vertical direction, the positioning disc 6 and the columnar cross beam 7 are moved up and down, and the elevation scale on the column 5 is combined with the elevation position of the tunnel axis. When the center elevation of the positioning disc 6 coincides with the center elevation of the tunnel axis, the positioning disc 6 and the columnar cross beam 7 are kept stable, at this time, the subsequent operation can be continued. During the detection of each ring of pipe, the center of the positioning disc 6 and the tunnel axis are first ensured to be aligned.

[0045] Step three: drive the first drive gear 10 by the second drive motor 9, drive the meshed first external gear 11, rely on the first cylindrical shaft 12 to drive the cylindrical member 13 and the rectangular turntable 16 to rotate clockwise and longitudinally together; measure the longitudinal distance r1, r2 of the pipe piece in the same circumferential track by the first laser range finder 17 and the second laser range finder 18 at both ends. Use the laser positioner 19 to align the pipe piece joint, and the first laser range finder 17 and the second laser range finder 18 measure the distance to obtain the longitudinal misalignment offset of the pipe piece (such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 );

[0046] For example, when the rectangular turntable keeps Figure 2 direction, at this time, the third motor 20 is driven to rotate the rectangular turntable 16 by 90°, and then the first drive gear 10 is driven by the second drive motor 9 to drive the meshed first external gear 11, and the cylindrical member 13 is driven by the first cylindrical shaft 12 to rotate the laser positioner 19 to stop when a large fluctuation occurs, at this time, the tunnel pipe piece has misalignment offset problem, that is, the misalignment position of the pipe piece is represented by observing the laser jumping fluctuation phenomenon, and the distance r1, r2 of the pipe piece at both ends is measured by the laser range finder (the first laser range finder 17 and the second laser range finder 18). The longitudinal and circumferential misalignment offset l of the measured pipe piece is calculated according to the following operation formula, d is the distance between the laser range finder and the laser positioner, R1 and L1 are in the same circle, R2 and L2 are in the same circle, that is, the values of the two are equal, and the distance difference of the pipe piece at both ends can be calculated. See the attached Figure 5 . The measurement principle is shown in the attached Figure 4 After the detection is completed, continue to rotate the disc member 13, and stop when the laser positioner 19 is aligned with the next joint between the single rings of the pipe piece to be detected, at this time, the circumferential misalignment offset of the pipe piece at the joint can be detected, and so on, the circumferential misalignment offset of the pipe piece at each joint of the ring can be measured.

[0047]

[0048] L1=R1 (3)

[0049] L2=R2 (4)

[0050] l=|L2-L1| (5)

[0051] Step four: when the rectangular turntable shows the direction as shown in Figure 2 , drive the second drive gear 14 by the third drive motor 20, drive the meshed second external gear 15;

[0052] drive the rectangular turntable 16 to move 90° horizontally and axially in a circular motion (such asFigure 2 position, and in combination Figure 3 ) the position of the pipe segment joint is aligned by the laser positioner 19.

[0053] The distance r1, r2 between the different pipe segments according to the tunnel axis is measured by the first laser distance meter 17 and the second laser distance meter 18 at both ends. Figure 6 ) respectively;

[0054] For example, when the rectangular turntable holds Figure 2 direction, at this time, the third drive motor 20 does not need to be rotated, only the laser positioner 19 needs to be controlled to align the pipe segment joint to be detected, the laser positioner 19 is turned on, and the movable base trolley 1 is moved to stop when a large fluctuation of the laser positioner 19 is observed, at this time, the tunnel pipe segment has a misalignment offset problem, that is, the pipe segment misalignment position is represented by observing the laser jumping fluctuation phenomenon, the distance of the pipe segments at both ends is measured by the laser distance meters (the first laser distance meter 17 and the second laser distance meter 18) at both ends, the longitudinal misalignment offset amount of the pipe segments is calculated according to the formula in step three, and the measurement principle is shown in the attached Figure 6 The second motor 9 is driven to rotate the cylindrical member 13, and the ring-to-ring misalignment offset amount at different positions of the pipe segment can be measured.

[0055] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make any modification, equivalent replacement and improvement within the technical range disclosed by the present application, and all of them shall be covered within the protection scope of the present application.

Claims

1. A device for measuring the circumferential and longitudinal misalignment of tunnel segments, characterized in that: The device is provided with a movable base trolley (1), a supporting vertical plate (3) is fixed on the upper part of the movable base trolley (1), reinforcing ribs (2) are symmetrically distributed on both sides of the supporting vertical plate (3), a first driving motor (4) is installed on the upper part of the supporting vertical plate (3), the first driving motor (4) controls and drives a vertically movable column (5) installed on the top of the supporting vertical plate (3), a columnar crossbeam (7) passes through the column (5), and both ends of the columnar crossbeam (7) are respectively connected to a positioning disc (6) and a positioning assembly device (a) for measuring the inter-ring and longitudinal offset of the pipe segments; The positioning assembly device (a) comprises a vertical plate (8) whose outer side is blindly mounted on a columnar crossbeam (7); a second drive motor (9) is fixedly mounted on the vertical plate (8) via a square plate; the second drive motor (9) is used to control the rotation of a first columnar rotating shaft (12); a first drive gear (10) is mounted on the output rotating shaft of the second drive motor (9); the first drive gear (10) is meshed with a first external gear (11) mounted on the first columnar rotating shaft (12); The cylindrical component (13) is driven by the rotation of the first cylindrical rotating shaft (12); a third driving motor (20) is fixed to one side of the cylindrical component (13) via a square plate; a second driving gear (14) is mounted on the output rotating shaft of the third driving motor (20); and the second driving gear (14) is meshed with a second external gear (15); The second outer gear (15) is fitted with a second cylindrical rotating shaft (21), the lower end of the second cylindrical rotating shaft (21) is freely rotatably mounted on the thickness surface of the cylindrical component (13), the upper end of the second cylindrical rotating shaft (21) is also fitted with a rectangular rotating disk (16), the rectangular rotating disk (16) is located on the upper part of the second outer gear (15), and the rectangular rotating disk (16) is mounted with a first laser rangefinder (17), a second laser rangefinder (18) and a laser locator (19).

2. The device for measuring the circumferential and longitudinal misalignment of tunnel segments according to claim 1, characterized in that: The first cylindrical rotating shaft (12) is blindly embedded on the inner side of the vertical plate (8).

3. The device for measuring the circumferential and longitudinal misalignment of tunnel segments according to claim 1, characterized in that: The first laser rangefinder (17) and the second laser rangefinder (18) are respectively located at different ends of the rectangular turntable (16).

4. The device for measuring the circumferential and longitudinal misalignment of a tunnel segment according to claim 1, characterized in that: The column (5) is provided with an elevation scale.

5. The device for measuring the circumferential and longitudinal misalignment of a tunnel segment according to claim 1, characterized in that: The upper end of the column (5) is provided with a groove which penetrates the columnar crossbeam (7).

6. The device for measuring the circumferential and longitudinal misalignment of tunnel segments according to claim 1, characterized in that: The laser beam of the laser locator (19) is aligned with the position of the joint of the pipe segments.

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