Anti-seismic whole-process measurement station-changing-free guiding device

Abstract

The utility model discloses an anti-seismic whole-process measurement station-changing-free guiding device, which belongs to the technical field of accurate attitude measurement and guiding of tunneling equipment, and comprises a shield tunneling machine, a shield tunneling trolley, a total station, a laser emitting device, a multi-path double-screen laser target and a rearview prism, the shield tunneling trolley is arranged on one side of the shield tunneling machine, and the total station is arranged on the other side of the shield tunneling machine. The laser emitting device is mounted at the bottom of the total station; a relation is established through the total station, the adjustable laser transmitter, the multi-path double-screen laser target and the rearview prism, when the system works, the adjustable laser transmitter keeps a fixed transmitting angle to irradiate the multi-path double-screen laser target, the multi-path double-screen laser target collects a laser azimuth angle at a high frame frequency, and the total station measures the rearview prism in real time in a tracking mode. The method has the advantages that the system has shock resistance, and when the trolley vibrates, the optical path of the adjustable laser transmitter and the total station measure the rear-view orientation relationship synchronously change during vibration, so that the influence of vibration on the measurement result is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of accurate posture measurement and guidance of tunnel excavation equipment, in particular to an anti-seismic full-process measurement station-changing-free guidance device. Background Art

[0002] The current shield automatic guidance system usually uses a fixed measuring station, that is, the total station is installed in a hanging basket at a fixed position, and the hanging basket cannot move during the measurement process. This measurement method has the following disadvantages:

[0003] (1) Frequent station changes are required when dealing with small-radius curves;

[0004] (2) Changing stations requires a long time and manpower (generally speaking, it takes 2 to 3 hours and 3 to 5 professional surveyors to change stations once), and the excavation work must be suspended during the station change process, which affects the construction progress and increases the construction cost;

[0005] (3) It is impossible to measure in a construction environment with heavy dust;

[0006] (4) The measurement cycle is long.

[0007] At the same time, there are some similar station-free solutions on the market. However, since the total station is constantly moving and vibrating during the excavation of the shield, these two problems make it impossible to use the total station for posture measurement. The measurement can only be stopped or measured through other indirect methods. These will have the risk of excessive deviation. Therefore, we need to propose a seismic-resistant full-process measurement station-free guide device. Summary of the invention

[0008] The purpose of the utility model is to provide a seismic-resistant full-process measurement station-changing-free guide device, which has the advantages of no station-changing, accurate measurement of shield machine posture and adaptability to larger dust environments, so as to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides a seismic-resistant full-process measurement station-changing-free guide device, comprising a shield machine, a shield trolley, a total station, a laser emitting device, a multi-channel dual-screen laser target and a rear-view prism. The shield trolley is installed on one side of the shield machine, the laser emitting device is installed on the bottom of the total station, an adjustable shock-absorbing mounting assembly is installed at the bottom of the laser emitting device, the laser emitting device and the total station are fixed to the top of the shield trolley through the adjustable shock-absorbing mounting assembly, the multi-channel dual-screen laser target is installed inside the shield machine, and the multi-channel dual-screen laser target and the laser emitting device are arranged correspondingly.

[0010] Preferably, the adjustable shock-absorbing mounting assembly includes a shock-absorbing platform fixedly mounted on the top of the shield trolley, the top of the shock-absorbing platform is fixedly connected to an automatic leveler, and the top of the automatic leveler is fixedly connected to the bottom of the laser emitting device.

[0011] Preferably, it also includes a measuring station sub-control box, which is installed on the surface of the shield vehicle and is respectively connected to the total station, the laser emitting device and the automatic leveler signal.

[0012] Preferably, it also includes a central control box, which is installed on the surface of the shield vehicle and is connected to the measuring station sub-control box and the multi-channel dual-screen laser target signal respectively.

[0013] Preferably, it also includes an industrial computer, which is connected to the central control box by signal.

[0014] Preferably, the laser emitting device is specifically a laser emitter, and the use angle of the laser emitter is adjustable.

[0015] Preferably, the rear-view prisms are provided in multiple groups, and the multiple groups of rear-view prisms are all installed on the inner wall of the tunnel.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model adopts the station-changing-free method, and the total station is installed on the shield trolley. When the shield advances forward, it will move forward synchronously with the total station. A high-precision two-axis angle-adjustable laser transmitter is installed under the total station. Under the laser transmitter is an automatic leveler, which can provide horizontal bubble leveling for the total station in real time. Under the automatic leveler is a mechanical shock-absorbing platform, which can filter out most of the vibrations generated by the trolley. This eliminates the need for a fixed hanging basket and reduces the time for installing the hanging basket.

[0018] 2. A multi-mode dual-channel laser target is installed inside the shield. This laser target uses a dual-channel laser mode, which means that it can accurately measure the laser target coordinates through a small prism installed on the front panel, and can read the light spot of the total station laser through the industrial camera behind the prism to calculate the azimuth. At the same time, the laser points of the laser transmitter on the front and rear screens can be read through the dual screens of the laser target, and the laser azimuth can be calculated through the coordinates of the light spots on the two screens.

[0019] 3. When the shield is assembled or excavation is stopped, the total station can measure two or three rear-view prisms installed on the tunnel wall. The precise coordinates of the total station and the azimuth relationship of the two sets of prisms can be obtained through the rear intersection method. The obtained relationship is then used to measure the prisms on the laser target and accurately measure the posture of the shield machine.

[0020] 4. The distance between the total station and the laser target installed in the shield body remains unchanged, which can ensure that the distance is within a reasonable range and can adapt to curves with small radius turns. And because the distance to the laser target is close, the visibility conditions are better and it can adapt to a larger dust environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the adjustable shock-absorbing mounting assembly of the utility model.

[0023] In the figure: 1. Shield machine; 2. Shield trolley; 3. Total station; 4. Laser emitting device; 5. Multi-channel dual-screen laser target; 6. Rear-view prism; 7. Shock-absorbing platform; 8. Automatic leveler; 9. Station sub-control box; 10. Central control box; 11. Industrial computer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 2 The utility model provides a seismic-resistant full-process measurement station-changing-free guiding device, comprising a shield machine 1, a shield trolley 2, a total station 3, a laser emitting device 4, a multi-channel dual-screen laser target 5 and a rear-view prism 6. The rear-view prism 6 is provided in multiple groups, and the multiple groups of rear-view prisms 6 are all installed on the inner wall of the tunnel. The shield trolley 2 is installed on one side of the shield machine 1, the laser emitting device 4 is installed on the bottom of the total station 3, the laser emitting device 4 is specifically a laser emitter, and the use angle of the laser emitter is adjustable. The multi-channel dual-screen laser target 5 is installed inside the shield machine 1, and the multi-channel dual-screen laser target 5 is arranged corresponding to the laser emitting device 4.

[0026] Through the coordinated use of a multi-channel dual-screen laser target 5, a laser emitting device 4 and a total station 3, a multi-mode dual-channel laser target is installed inside the shield body. This laser target uses a dual-channel laser mode, that is, it can accurately measure the laser target coordinates through a small prism installed on the front panel, and can read the light spot of the total station 3 laser through the industrial camera behind the prism to calculate the azimuth. At the same time, the laser points of the laser emitter on the front screen and the rear screen can be read through the dual screens of the laser target, and the laser azimuth can be calculated through the coordinates of the light spots on the two screens.

[0027] In addition, when the shield is assembled or stopped, the total station 3 can measure two or three rear-view prisms 6 installed on the tunnel wall, obtain the precise coordinates of the total station 3 and the azimuth relationship between the two sets of prisms through the rear intersection method, and then use the obtained relationship to measure the prism on the laser target, accurately measure the posture of the shield machine 1, and the distance between the total station 3 and the laser target installed in the shield body remains unchanged, which can ensure that the distance is within a reasonable range and can adapt to small radius curves. And because the distance to the laser target is close, the visibility condition is better, and it can adapt to a larger dust environment.

[0028] Preferably, an adjustable shock-absorbing mounting assembly is installed at the bottom of the laser emitting device 4, and the laser emitting device 4 and the total station 3 are installed and fixed on the top of the shield trolley 2 through the adjustable shock-absorbing mounting assembly. The adjustable shock-absorbing mounting assembly includes a shock-absorbing platform 7 fixedly installed on the top of the shield trolley 2, and an automatic leveler 8 is fixedly connected to the top of the shock-absorbing platform 7, and the top of the automatic leveler 8 is fixedly connected to the bottom of the laser emitting device 4. The device also includes a measuring station sub-control box 9, which is installed on the surface of the shield trolley 2, and the measuring station sub-control box 9 is respectively connected to the total station 3, the laser emitting device 4 and the automatic leveler 8 by signal.

[0029] By setting the installation components, the total station 3 and the laser emitting device 4 can be installed on the shield trolley 2. In this embodiment, the total station 3 is installed on the shield trolley 2, and the shield will move forward synchronously with the total station 3 when it advances forward. A high-precision two-axis angle-adjustable laser emitter is installed below the total station 3. Under the laser emitter is an automatic leveler 8, which can provide horizontal bubble leveling for the total station 3 in real time. Under the automatic leveler 8 is a mechanical shock-absorbing platform 7, which can filter out most of the vibrations generated by the trolley. This eliminates the need to fix the hanging basket and reduces the time for installing the hanging basket. Through the setting of the measuring station sub-control box 9, control instructions can be sent to the total station 3, the laser emitting device 4 and the automatic leveler 8, and the usage data of the total station 3, the laser emitting device 4 and the automatic leveler 8 can also be collected.

[0030] It is worth mentioning that the device also includes a central control box 10, which is installed on the surface of the shield trolley 2. The central control box 10 is respectively connected to the measuring station sub-control box 9 and the multi-channel dual-screen laser target 5 by signal. It also includes an industrial computer 11, which is connected to the central control box 10 by signal. Through the setting of the central control box 10, the system of the device can be controlled. It is connected to the industrial computer 11 by signal, and the user can send control instructions to the system of the device through the industrial computer 11 and the central control box 10.

[0031] Based on the above-mentioned seismic full-process measurement station-changing-free guide device, this embodiment also discloses its working principle, including the following steps:

[0032] 1. Check whether all equipment can be used normally and initialize the laser transmitter;

[0033] 2. Determine whether the shield machine 1 is in a shutdown state. If it is not in a shutdown state, wait for it to shut down;

[0034] 3. Adjust the laser emitter light spot to the center of the light screen, and measure 2-3 rear-view prisms 6 using the total station 3;

[0035] 4. Total station 3 measures the small prism of the laser target, reads the roll angle and pitch angle, calculates the laser target coordinates and the laser azimuth of total station 3, and synchronously reads the coordinates of the laser target dual-screen light spots;

[0036] 5. Establish the azimuth relationship between the laser of the total station 3 and the laser indicator, collect the laser points of the laser transmitter on the dual screens and the data of the tilt meter in real time, and calculate the azimuth change in real time. At this time, the total station 3 turns back and uses the locking and continuous measurement mode to measure one of the rear views, and combines the synchronous data of the two to calculate the posture of the shield machine 1;

[0037] 6. Store the calculated data and send it to the cloud and other clients.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seismic full-process measurement station-changing-free guide device, characterized in that: The invention comprises a shield machine (1), a shield trolley (2), a total station (3), a laser emitting device (4), a multi-channel dual-screen laser target (5) and a rear-view prism (6), wherein the shield trolley (2) is mounted on one side of the shield machine (1), the laser emitting device (4) is mounted on the bottom of the total station (3), an adjustable shock-absorbing mounting assembly is mounted on the bottom of the laser emitting device (4), the laser emitting device (4) and the total station (3) are mounted and fixed on the top of the shield trolley (2) via the adjustable shock-absorbing mounting assembly, the multi-channel dual-screen laser target (5) is mounted inside the shield machine (1), and the multi-channel dual-screen laser target (5) and the laser emitting device (4) are arranged correspondingly.

2. According to claim 1, a seismic full-process measurement station-changing-free guide device is characterized in that: The adjustable shock-absorbing mounting assembly comprises a shock-absorbing platform (7) fixedly mounted on the top of the shield trolley (2), the top of the shock-absorbing platform (7) being fixedly connected to an automatic leveler (8), and the top of the automatic leveler (8) being fixedly connected to the bottom of the laser emitting device (4).

3. The anti-seismic full-process measurement station-changing-free guide device according to claim 2 is characterized in that: It also includes a measuring station sub-control box (9), which is installed on the surface of the shield trolley (2), and the measuring station sub-control box (9) is respectively connected to the total station (3), the laser emitting device (4) and the automatic leveler (8) by signals.

4. The seismic full-process measurement station-changing-free guide device according to claim 1 is characterized in that: It also includes a central control box (10), which is installed on the surface of the shield trolley (2), and the central control box (10) is respectively connected to the measurement station sub-control box (9) and the multi-channel dual-screen laser target (5) by signal.

5. The seismic full-process measurement station-changing-free guide device according to claim 1 is characterized in that: It also includes an industrial computer (11), wherein the industrial computer (11) is connected to the central control box (10) via a signal.

6. The seismic full-process measurement station-changing-free guide device according to claim 1 is characterized in that: The laser emitting device (4) is specifically a laser emitter, and the use angle of the laser emitter is adjustable.

7. The seismic full-process measurement station-changing-free guide device according to claim 1 is characterized in that: The rear-view prisms (6) are provided in multiple groups, and the multiple groups of rear-view prisms (6) are all installed on the inner wall of the tunnel.

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