A posture measuring device for a shield machine

Abstract

The utility model relates to a kind of shield machine posture measuring devices, it includes prism and total station, the prism is installed in the tail of shield machine by fixed component, the prism is provided three, the placement position of three prisms is triangle type;The total station is fixed on the segment of already formed tunnel by support, the support is tripod, three total stations are set on the support, three total stations and three prisms one-to-one correspond and align, and the total station corresponding with the prism of top is fixed on the top of support, and the total station corresponding with the prism below is fixed by mounting plate and the support leg of tripod. The posture of the shield machine can be monitored quickly and accurately, and the construction quality is not affected by the poor posture control of the shield machine.

Description

Technical Field

[0001] This utility model relates to the field of tunnel shield construction, and in particular to a shield machine attitude measurement device. Background Technology

[0002] To ensure the safety and quality of tunnel construction, promptly detect and correct any deviations in the shield machine's attitude, and avoid various construction problems caused by poor attitude, it is necessary to monitor the shield machine's attitude during the tunnel shield construction process. Therefore, shield machine attitude measurement is an important part of shield construction. By continuously adjusting the earth pressure, the shield machine's attitude is controlled to ensure the safety and quality of tunnel construction.

[0003] In actual construction, if the tunnel boring machine's attitude is not properly controlled, it may lead to various construction loads such as eccentric thrust from the jacks on the tunnel segments, compressive pressure from the shield shell on the tunnel segments, and uneven pressure from the tail grouting on the tunnel segments. These loads can cause various problems in the tunnel segment structure and affect the construction quality. Therefore, accurate measurement of the tunnel boring machine's attitude is crucial for preventing and resolving these problems. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a shield tunneling machine attitude measurement device.

[0005] The shield tunneling machine attitude measurement device provided in this application adopts the following technical solution:

[0006] A shield tunneling machine attitude measurement device includes a prism and a total station. The prism is installed at the tail of the shield tunneling machine by a fixing component, and the total station is fixed to the segments of the formed tunnel by a bracket.

[0007] Preferably, three prisms are provided.

[0008] Preferably, the three prisms are arranged in a triangular shape.

[0009] Preferably, the fixing component includes a fixing frame, which is fixedly connected to the tail of the tunnel boring machine. The fixing frame has an installation groove on the side away from the tunnel boring machine, and the prism is set in the installation groove by a wrapping component.

[0010] Preferably, the package includes a connecting part fixedly connected to the bottom wall of the mounting groove and a wrapping part fixedly connected to the inner peripheral wall of the mounting groove. The side of the prism facing away from the reflecting surface is pressed against the connecting part, and the outer peripheral surface of the prism is interference-fitted with the wrapping part.

[0011] Preferably, an annular limiting part is provided on the side of the wrapping part away from the connecting part. The limiting part is arranged around the circumference of the prism and is located on the side of the prism away from the connecting part in the thickness direction. The limiting part is interference-fitted with the side of the prism away from the connecting part.

[0012] Preferably, the inner periphery of the limiting portion is rounded.

[0013] Preferably, the support is a tripod, and three total stations are mounted on the support. The three total stations correspond one-to-one with the three prisms and are aligned. The total station corresponding to the top prism is fixed to the top of the support, and the total station corresponding to the bottom prism is fixed to the tripod legs by a mounting plate.

[0014] Preferably, a horizontally fixed support plate is fixed on the pre-formed tunnel segment. The bracket is placed on the support plate, and the top surface of the support plate is flat. A circular block is fixed on the top of the bracket corresponding to the position of each of the three legs. The bottom surface of the circular block abuts against the top surface of the support plate. A positioning arc plate is provided on the top surface of the support plate. The position of the positioning arc plate corresponds one-to-one with the position of the circular block. The positioning arc plate is located on the side of the three circular blocks that are far apart from each other and fits against the outer peripheral surface of the corresponding circular block.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. Measure and record the initial position of the prism before the tunnel boring machine (TBM) starts construction using a total station. Then, quickly position the support to the initial recorded prism position using a positioning arc plate. Then, measure the position of the prism on the TBM at regular intervals during construction to achieve rapid measurement of the TBM's attitude.

[0017] 2. By using three triangularly arranged prisms in conjunction with a corresponding total station, the displacement data from three different locations are integrated. Tunnel boring machine (TBM) construction can only continue when all three data points are within the set displacement range. If the data measured at any location is outside the set displacement range, the TBM attitude needs to be adjusted until all three data points are within the set displacement range again. This avoids situations where poor TBM attitude control affects construction quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a tunnel boring machine attitude measurement device according to an embodiment of this application.

[0019] Figure 2 This is a cross-sectional structural diagram used to illustrate the fixed component in an embodiment of this application.

[0020] Figure 3 This is used to illustrate the embodiments of this application. Figure 1 A magnified structural diagram of point A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Prism; 2. Total station; 3. Fixing component; 31. Fixing frame; 311. Mounting groove; 32. Wrapping component; 321. Connecting part; 322. Wrapping part; 323. Limiting part; 4. Tunnel boring machine; 5. Support; 51. Mounting plate; 52. Support leg; 53. Circular block; 6. Segment; 61. Support plate; 611. Positioning arc plate. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0023] This application discloses a shield tunneling machine attitude measurement device.

[0024] Reference Figure 1-3 The tunnel boring machine (TBM) attitude measurement device includes a prism 1 and a total station 2. The prism 1 is installed at the tail of the TBM 4 via a fixing component 3. Three prisms 1 are arranged in a triangular formation. By using the three triangularly arranged prisms 1 in conjunction with the corresponding total station 2, the displacement data from three different positions are integrated. Compared to measuring the position and displacement of only one prism 1, the arrangement of three prisms 1 at different positions and the use of the total station 2 significantly improves the measurement accuracy.

[0025] The fixing component 3 includes a fixing frame 31, which is fixedly connected to the tail of the tunnel boring machine 4. The fixing frame 31 has an installation groove 311 on the side away from the tunnel boring machine 4, and the prism 1 is set in the installation groove 311 through the wrapping component 32.

[0026] The enclosure 32 includes a connecting portion 321 fixedly connected to the inner bottom wall of the mounting groove 311 and an enclosure portion 322 fixedly connected to the inner peripheral wall of the mounting groove 311. The side of the prism 1 facing away from the reflecting surface abuts against the connecting portion 321, and the outer peripheral surface of the prism 1 is press-fitted with the enclosure portion 322. An annular limiting portion 323 is provided on the side of the enclosure portion 322 away from the connecting portion 321. The limiting portion 323 surrounds the prism 1 in a circle and is located on the side of the prism 1 away from the connecting portion 321 in the thickness direction. The limiting portion 323 is press-fitted with the side of the prism 1 away from the connecting portion 321.

[0027] The connecting part 321, the wrapping part 322, and the limiting part 323 are integrally molded. The wrapping part 32 is made of silicone, and the inner circumferential side of the limiting part 323 is rounded to improve the smoothness of the prism 1 being installed into the wrapping part 32. The fixing component 3 facilitates the replacement of worn or damaged prism 1.

[0028] The total station 2 is fixed to the pre-formed tunnel segment 6 via bracket 5. The bracket 5 is a tripod, on which three total stations 2 are mounted. Each of the three total stations 2 corresponds to and is aligned with one of the three prisms 1. The total station 2 corresponding to the top prism 1 is fixed to the top of the bracket 5, while the total station 2 corresponding to the bottom prism 1 is fixed to the tripod legs 52 via mounting plates 51. A horizontally fixed support plate 61 is fixed to the pre-formed tunnel segment 6. The bracket 5 is placed on the support plate 61. The top surface of the support plate 61 is flat. A circular block 53 is fixed to the top of the bracket 5 at the position corresponding to each of the three legs 52. The bottom surface of the circular block 53 abuts against the top surface of the support plate 61. A positioning arc plate 611 is provided on the top surface of the support plate 61. The position of the positioning arc plate 611 corresponds one-to-one with the position of the circular blocks 53. The positioning arc plate 611 is located on the side of the three circular blocks 53 furthest from each other and fits against the outer circumference of the corresponding circular block 53.

[0029] The positioning arc plate 611 facilitates the quick placement of the bracket 5 to the measurement position, and ensures high consistency in the measurement position each time, thus guaranteeing measurement accuracy.

[0030] The implementation principle of the shield machine attitude measurement device in this application is as follows:

[0031] The initial position of the prism 1 before the tunnel boring machine 4 starts construction is measured and recorded by the total station 2. Then, the support 5 is quickly positioned and placed at the initial recorded position of the prism 1 by the positioning arc plate 611. Then, the position of the prism 1 on the tunnel boring machine 4 is measured at regular intervals during the construction process to achieve rapid measurement of the attitude of the tunnel boring machine 4.

[0032] By using three triangularly arranged prisms 1 in conjunction with the corresponding total station 2 to measure and integrate the displacement data from three different locations, tunnel boring machine (TBM) construction can continue only when all three data points are within the set displacement range. If the data measured at any location is outside the set displacement range, the attitude of the TBM 4 needs to be adjusted until all three data points are within the set displacement range again, thus avoiding situations where poor attitude control of the TBM 4 affects the construction quality.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shield tunneling machine (4) attitude measurement device, characterized in that: It includes a prism (1) and a total station (2). The prism (1) is installed at the tail of the tunnel boring machine (4) by a fixing component (3), and the total station (2) is fixed to the segments (6) of the formed tunnel by a bracket (5).

2. The shield machine (4) attitude measuring device according to claim 1, characterized in that: The prism (1) is provided in three parts.

3. The shield machine (4) attitude measuring device according to claim 2, characterized in that: The three prisms (1) are arranged in a triangular shape.

4. The shield machine (4) attitude measuring device according to claim 1, characterized in that: The fixing component (3) includes a fixing frame (31), which is fixedly connected to the tail of the tunnel boring machine (4). The fixing frame (31) has an installation groove (311) on the side away from the tunnel boring machine (4). The prism (1) is set in the installation groove (311) through a wrapping component (32).

5. The shield machine (4) attitude measuring device according to claim 4, characterized in that: The package (32) includes a connecting part (321) fixedly connected to the bottom wall of the mounting groove (311) and a wrapping part (322) fixedly connected to the inner peripheral wall of the mounting groove (311). The side of the prism (1) facing away from the reflecting surface is pressed against the connecting part (321), and the outer peripheral surface of the prism (1) is interference-fitted with the wrapping part (322).

6. The shield machine (4) attitude measuring device according to claim 5, characterized in that: An annular limiting part (323) is provided on the side of the wrapping part (322) away from the connecting part (321). The limiting part (323) surrounds the prism (1) in a circle. The limiting part (323) is located on the side of the prism (1) away from the connecting part (321) in the thickness direction. The limiting part (323) is interference-fitted with the side of the prism (1) away from the connecting part (321).

7. The shield machine (4) attitude measuring device according to claim 6, characterized in that: The inner periphery of the limiting part (323) is rounded.

8. The shield machine (4) attitude measuring device according to claim 1, characterized in that: The support (5) is a tripod, and three total stations (2) are set on the support (5). The three total stations (2) correspond one-to-one with the three prisms (1) and are aligned. The total station (2) corresponding to the top prism (1) is fixed to the top of the support (5), and the total station (2) corresponding to the bottom prism (1) is fixed to the tripod legs (52) through the mounting plate (51).

9. The shield machine (4) attitude measuring device according to claim 1, characterized in that: A horizontally fixed support plate (61) is fixedly installed on the pre-formed tunnel segment (6). The bracket (5) is placed on the support plate (61). The top surface of the support plate (61) is flat. A round block (53) is fixed on the top of the bracket (5) corresponding to the position of the three legs (52). The bottom surface of the round block (53) abuts against the top surface of the support plate (61). A positioning arc plate (611) is provided on the top surface of the support plate (61). The position of the positioning arc plate (611) corresponds one-to-one with the position of the round block (53). The positioning arc plate (611) is located on the side of the three round blocks (53) that are far away from each other and is in contact with the outer peripheral surface of the corresponding round block (53).

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