Real-time monitoring device and operation determination method for hob status during shield construction
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A technology for real-time monitoring and construction, which is applied in the direction of measuring devices, optical devices, and testing of machine/structural components. Impact wear, the effect of avoiding impact
Inactive Publication Date: 2019-12-20
李睿
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[0003] At present, there are related technologies for hob state detection during shield construction, but most of them are aimed at the normal wear of the hob, and are restricted by environmental conditions, with low detection accuracy and poor reliability. The detection device is easily damaged in the harsh environment of rock breaking by the hob. , such as the application number: 201811129130.X's invention patent "a pressure-type shield cutterhead hob wear detection device and its application method", which mainly introduces the use of pressure-type structure to detect hob wear, in actual work , the hob is under rock-breaking conditions, and the broken rock slag can easily damage the pressure sensor
The application number is: 201710905705.1 The invention patent "Hob wear test platform and supporting measurement and evaluation method" focuses on how to test the hob wear during the indoor experiment process, but cannot detect the hob during the shield construction process in real time. state
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Embodiment 1
[0034] Embodiment 1: A real-time monitoring device for hob status in shield tunneling construction, see Figure 1-Figure 4, which includes a hob 1, the hob 1 is installed in the knife box 2, the upper part of the knife box 2 is fixed with a mounting bracket 3, and a laser sensor 12 is arranged on the mounting bracket 3, in order to prevent the laser sensor 12 from being damaged during the hob working process, The laser sensor 12 is provided with a protection device outside, and the protection device includes a first protection board 4, a second protection board 5, a third protection board 6, a vertical sealing strip 13, a transverse sealing strip 14, a protective lens 15, a light-transmitting Window 7, the middle part of the first protective plate 4 is provided with a through hole, the laser sensor 12 is fixedly arranged in the through hole of the first protective plate 4, the second protective plate 5 is arranged on the first protective plate 4, the third protective plate 6, ...
Embodiment 2
[0039] Embodiment 2: A method for judging the state of the hob in shield construction, characterized in that it uses the real-time monitoring device for the state of the hob in shield construction described in claim 1 to monitor, and during the construction of the shield, The cutter head rotates, the hob data is collected in real time through the laser sensor, and the operating status of the hob is judged by the data monitored by the laser sensor:
[0040] ① When the wear value of the hob fluctuates steadily and gradually increases, it means that the hob is operating normally to break rocks; if Figure 5 as shown in (a);
[0041] ②When the wear value of the hob jumps suddenly and then fluctuates steadily, it means that the hob has string grinding; if Figure 5 as shown in (b);
[0042] ③When the wear value of the hob is stable, it means that the hob is stuck and does not roll to break the rock; if Figure 5 as shown in (c);
[0043] When the two situations of ② and ③ occur...
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Abstract
The invention discloses a real-time monitoring device and an operation determination method for a hob status during shield construction. A laser monitoring method is introduced into a cutter head system during shield construction, and related data such as tool wear can be effectively monitored by laser measurement feedback, which not only solves the problem of hob running status monitoring duringthe construction process, but also effectively avoids the disadvantages such as impact wear of the rock slag on the sensor during the construction process. In order to avoid the dirt, oil and other stains from adhering to the lens during the operation, resulting in affecting the sensitivity and accuracy of the laser sensor detection, the sealing strips on the protective lens and the protective device can move relative to one another to scrape off the stains on the protective lens and ensure the cleanness of the lens. The operation determination method for the hob status collects the hob wear data through the hob operation data monitoring device, analyzes the operation status of the hob, determines that the hob is in a normal status such as regular wear, or in an abnormal status, such as side grinding, chipping and jamming, finds the abnormal status of the hob in time, and carries out quick replacement and repair.
Description
technical field [0001] The invention relates to the field of tunnel construction equipment technology and application, in particular to a hob state real-time monitoring device and operation judgment method during shield tunneling construction. Background technique [0002] Shield tunneling, as an important tunnel construction equipment, is widely used in the construction of railway tunnels, urban rails and other projects. The hob is an important device for rock breaking in shield tunneling, and its performance directly affects the efficiency and cost of shield tunneling (in hard rock formations, the cost of the hob accounts for about 1 / 3 of the cost of the entire construction equipment), which is even more serious. The meeting caused engineering accidents and casualties. During the shield construction process, the hob has a butterfly effect in breaking rocks. If a hob is damaged and cannot be found and replaced in time, it will quickly cause rapid damage to the adjacent hob...
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