CN105627900A - Automatic calibration device for current vortex sensor measuring wear loss of TBM hob - Google Patents
Automatic calibration device for current vortex sensor measuring wear loss of TBM hob Download PDFInfo
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- CN105627900A CN105627900A CN201410578197.7A CN201410578197A CN105627900A CN 105627900 A CN105627900 A CN 105627900A CN 201410578197 A CN201410578197 A CN 201410578197A CN 105627900 A CN105627900 A CN 105627900A
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- leading screw
- current vortex
- hob
- vortex sensor
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Abstract
The invention discloses an automatic calibration device for a current vortex sensor measuring the wear loss of a TBM hob. The automatic calibration device is characterized in that convex guide rails on the two sides of a bottom plate match concave grooves on hob brackets, a hob screw coupling connects a left-handed screw and a right-handed screw together, the screws are rotated to drive the hob brackets to move away from or to each other, and therefore, the distance between the hob brackets is applicable to the installation of hobs of different sizes; the shaft of the hob is embedded into fixed blocks, and is mounted on the semicircular grooves of the hob brackets; a single-chip microcomputer controls a drive circuit, a motor drives a sensor screw to rotate, the distance between a sensor vertical plate moving on the T-shaped guide rails and the blade of the hob changes so as to simulate the wear process of the hob; and a voltage signal output by the current vortex sensor and a distance signal output by a displacement sensor are sent to a conditioning circuit for conditioning and then sent to a single-chip microcomputer for processing, a fitting coefficient of wear loss of the hob is fitted out, and data is displayed.
Description
Technical field
The present invention relates to the testing techniques of equipment in tunneling boring hard rock mole industry, especially relate to the caliberating device to disk cutter wear extent detection eddy current sensor in TBM construction.
Background technology
TBM is by the heavy construction equipment that Tunnel Engineering is built. Disk cutter, as the instrument of TBM fractured rock, is the easily-consumed products that in development machine use procedure, consumption is maximum. Tool wear to a certain extent time, it is necessary to change immediately, otherwise can aggravate the abrasion of other cutters, form vicious cycle.
At present the monitoring of hobboing cutter is mainly had manual detection, abnormal flavour agent leak detection, estimates according to boring parameter and detection four kinds automatically, by the retrieval of domestic and international pertinent literature and data is found, TBM cutter on-line checking has all been carried out experimental study or theoretical research by Duo Suo colleges and universities and research institution both at home and abroad at present. Hobboing cutter on-line checking has all been carried out correlational study by the mechanisms such as domestic Central South University, China Railway Tunneling Equipment Co., Ltd., University Of Tianjin. Central South University patent of invention CN103148771A, name is called: a kind of TBM hob abrasion real-time monitoring device, and this device is the wear extent being detected hobboing cutter by current vortex sensor; China Railway Tunneling Equipment Co., Ltd. utility model patent CN202599933U, name is called: a kind of tunneler knife disc tool abrasion radio detection and monitoring system, the parameters such as cutter rotating speed, temperature detected by sensor assembly; University Of Tianjin patent of invention CN103512527A, name is called: the on-line measuring device of hard rock tunnel development machine disk cutter abrasion, and the method is arranged on the inspection cutter ring thickness transducer within hobboing cutter to detect hob abrasion; University Of Tianjin utility model patent CN203164109U, name is called: TBM hob abrasion detection device, and the method is to realize abrasion detection by hobboing cutter blocking in collimated laser beam.
In detection automatically, owing to TBM is operated in underground, hobboing cutter and rock contact, dust ratio is more serious, and engine space, cutterhead, hobboing cutter is surrounded by rock soil medium and subsoil water, therefore with laser, infrared ray, the signal receiving device such as ultrasound wave is difficult to accurate measurements, and current vortex sensor effectively can use in than relatively rugged environment.
Existing frequently-used hobboing cutter has 17 cun and 19 cun, wherein: the blade width of hobboing cutter be 20-30mm not etc.; Hobboing cutter cutting edge shape has triangular form, glut shape, wedge shape and wide shape arc sword etc. dissimilar, and comparing traditional eddy current detection distance technique has bigger difference.
In sum, the current vortex sensor data accuracy demand of hobboing cutter detection is equipped for large-scale full advance, by researching and developing the automatic calibration device of TBM hob abrasion amount current vortex sensor, determine the output data of different current vortex sensor, ensure the actual condition measured accurately with anticipation hobboing cutter, be one of urgent problem in hobboing cutter safe condition decision-making. The present invention proposes a kind of method of automatic Calibration measuring TBM hob abrasion amount current vortex sensor.
Summary of the invention
It is an object of the invention to provide a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor.
A kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor, by base plate, base, baffle plate, hobbing cutter support, hobboing cutter, fixed block, cutter shaft, bolt, packing ring, nut, left-handed leading screw, hobboing cutter leading screw shaft coupling, screw, dextrorotation leading screw, displacement transducer, motor, T-shaped guide rail, sensor leading screw, current vortex sensor, sensor riser, shaft coupling, modulate circuit, single-chip microcomputer, display circuit, drive circuit forms.
The invention discloses a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor. It is characterized in that: base plate is fixed on base by bolt and packing ring, base plate both sides have convex guide rail to match with the concave groove on hobbing cutter support; Plate washer is fixed on base plate by bolt and packing ring; Left-handed leading screw and dextrorotation leading screw are connected and composed one, left-handed leading screw and dextrorotation leading screw by screw and are connected with hobbing cutter support by screw thread by hobboing cutter leading screw shaft coupling; The cutter shaft of hobboing cutter embeds in fixed block, and is arranged on support semi-circular recesses; Sensor leading screw is coupled with the axle of motor by shaft coupling and screw, T-shaped guide rail is fixed on base by bolt and packing ring, current vortex sensor is fixed on sensor riser by bolt, packing ring and nut, sensor riser and sensor leading screw are threaded connection, below sensor riser, recessing coordinates with T-shaped guide rail, motor is fixed on base by bolt and packing ring, and displacement transducer is fixed on base by bolt and packing ring; The position signalling of current vortex sensor output voltage signal and displacement transducer output sends into modulate circuit, after sending into single-chip microcomputer process, and demonstrates data in the display after conditioned.
Described fixed block is for being arranged on hobbing cutter support by the hobboing cutter of difformity cutter shaft.
Described drive circuit rotates for drive stepping motor, and band dynamic sensor leading screw rotates, and makes sensor riser be moved rearwards by, the wear process of simulation hobboing cutter.
Institute's displacement sensors outgoing position signal, is that sensor riser is welded with the movable slider of displacement transducer, and sensor riser moves drive displacement transducer movable slider movement output position signalling.
Described current vortex sensor output voltage signal, be between current vortex sensor end face and hobboing cutter blade need not apart under magnitude of voltage.
Distance between described hobbing cutter support changes, and is reversely rotated by rotating threaded shaft, left-handed leading screw and the screw thread on dextrorotation leading screw, drives hobbing cutter support towards or away from motion.
The fitting coefficient of described hob abrasion amount, be single-chip microcomputer record displacement transducer often change certain distance and current vortex sensor output magnitude of voltage between relation function.
The feature of the present invention and providing the benefit that, by Single-chip Controlling drive circuit, driven by motor sensor leading screw rotates, the spacing being arranged between the current vortex sensor of sensor riser and hobboing cutter blade is made to change, the state of wear of simulation hobboing cutter, it is achieved the automatic Calibration process of current vortex sensor.
Fig. 1, the automatic calibration device structure chart 1 of current vortex sensor.
Fig. 2, the automatic calibration device structure chart 2 of current vortex sensor.
Fig. 3, system signal process chart.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, the structure of the present invention is described further. It should be noted that this example is narrative, rather than determinate, it is impossible to limit protection scope of the present invention with this.
A kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor, its structure is by base 1, base plate 2, baffle plate 3, hobbing cutter support 4, hobboing cutter 5, fixed block 6, cutter shaft 7, bolt 8, packing ring 9, bolt 10, packing ring 11, left-handed leading screw 12, hobboing cutter leading screw shaft coupling 13, screw 14, dextrorotation leading screw 15, bolt 16, packing ring 17, displacement transducer 18, motor 19, bolt 20, packing ring 21(such as Fig. 1), T-shaped guide rail 22, sensor leading screw 23, current vortex sensor 24, sensor riser 25, bolt 26, packing ring 27, nut 28, bolt 29, packing ring 30, shaft coupling 31, screw 32(such as Fig. 2), modulate circuit 33, single-chip microcomputer 34, display circuit 35, drive circuit 36 forms (such as Fig. 3).
Base plate 2 is fixed on base 1 by four groups of bolts 10 and packing ring 11, and base plate 2 both sides have convex guide rail to match with the concave groove on hobbing cutter support 4, make hobbing cutter support 4 to slide on a base plate 2; Plate washer 3 is fixing on a base plate 2 by 4 groups of every limit bolt 8 and packing ring 9; Left-handed leading screw 12 and dextrorotation leading screw 15 are connected and composed one, left-handed leading screw 12 and dextrorotation leading screw 15 by screw 14 and are connected with hobbing cutter support 4 by screw thread by hobboing cutter leading screw shaft coupling 13; By rotating threaded shaft, the screw thread on left-handed leading screw 12 and dextrorotation leading screw 15 reversely rotates, and drives hobbing cutter support 4 position towards or away from motion, makes the distance between hobbing cutter support 4 be suitable for 17 cun, mounting distance between 19 cun of hobboing cutter cutter shafts; The cutter shaft 7 of hobboing cutter 5 is by embedding in fixed block 6, and is arranged on support 4 semi-circular recesses.
Sensor leading screw 23 is coupled with the axle of motor 19 by shaft coupling 31 and screw 32, and T-shaped guide rail 22 is fixed on base 1 by four groups of bolts 29 and packing ring 30; Current vortex sensor 24 is fixed on sensor riser 25 by four groups of bolts 26, packing ring 27 and nut 28, and sensor riser 25 and sensor leading screw 23 are threaded connection, and below sensor riser 25, fluting coordinates with T-shaped guide rail 22; Motor 19 is fixed on base 1 by four groups of bolts 20 and packing ring 21, and displacement transducer 18 is fixed on base 1 by two groups of bolts 16 and packing ring 17; Sensor device riser 25 is connected with the movable slider of displacement transducer 18 by welding.
Initialization procedure, control single chip computer 34 exports stairstep signal to drive circuit 36, and motor 19 band dynamic sensor leading screw 23 rotates, and the distance making current vortex sensor 24 end face and the hobboing cutter 5 blade face installed on sensor riser 35 is 5mm, is set as initial value.
Calibration process, single-chip microcomputer 34 exports continuous control signal to drive circuit 36, make motor 19 band dynamic sensor leading screw 23 rotate, make sensor riser 25 be moved rearwardly into 30mm(17 cun of hobboing cutter by the distance presetting 5mm)/40mm(19 cun of hobboing cutter), the process that simulation hobboing cutter gradually wears out. Current vortex sensor 24 adopts magnetic field induction the different distance of sensor end face and hobboing cutter 5 blade face to be detected, export different magnitudes of voltage, single-chip microcomputer 34 records displacement transducer 18 and often changes the magnitude of voltage of certain distance and current vortex sensor 24 output, single-chip microcomputer 34 calculating relative to the fitting coefficient between simulation hob abrasion amount and output voltage by fitting function.
Claims (6)
1. the automatic calibration device measuring TBM hob abrasion amount current vortex sensor, by base plate, base, baffle plate, hobbing cutter support, hobboing cutter, fixed block, cutter shaft, bolt, packing ring, nut, left-handed leading screw, hobboing cutter leading screw shaft coupling, screw, dextrorotation leading screw, displacement transducer, motor, T-shaped guide rail, sensor leading screw, current vortex sensor, sensor riser, shaft coupling, modulate circuit, single-chip microcomputer, display circuit, drive circuit forms, it is characterized in that: base plate (2) is fixed on base (1) by bolt (10) and packing ring (11), base plate (2) both sides have convex guide rail to match with the concave groove on hobbing cutter support (4), baffle plate (3) is fixed on base plate (2) by bolt (8) and packing ring (9), left-handed leading screw (12) and dextrorotation leading screw (15) are connected and composed one by screw (14) by hobboing cutter leading screw shaft coupling (13), and left-handed leading screw (12) and dextrorotation leading screw (15) are connected with hobbing cutter support (4) by screw thread, the cutter shaft (7) of hobboing cutter (5) embeds in fixed block (6), is arranged on hobbing cutter support (4) semi-circular recesses, sensor leading screw (23) is coupled with the axle of motor (19) by shaft coupling (31) and screw (32), T-shaped guide rail (22) is fixed on base (1) by bolt (29) and packing ring (30), current vortex sensor (24) is fixed on sensor riser (25) by bolt (26), packing ring (27) and nut (28), sensor riser (25) and sensor leading screw (23) are threaded connection, and sensor riser (25) lower section recessing coordinates with T-shaped guide rail (22), motor (19) is fixed on base (1) by bolt (20) and packing ring (21), and displacement transducer (18) is fixed on base (1) by bolt (16) and packing ring (17), the signal that current vortex sensor (24) and displacement transducer (18) export sends into modulate circuit (33), after sending into single-chip microcomputer (34) process after conditioned, and demonstrate data in the display by display circuit (35).
2. a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor described in claim 1, it is characterized in that the hobboing cutter (5) of described difformity cutter shaft (7), different types of fixed block (6) can be changed, be arranged on support (4).
3. a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor described in claim 1, it is characterized in that described single-chip microcomputer (34) outputs control signals to drive circuit (36), motor (19) is made to rotate, and band dynamic sensor leading screw (23) rotates, sensor riser (25) is made to move forward and backward, the state of wear of simulation hobboing cutter.
4. a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor described in claim 1, is characterized in that described sensor riser (25) is connected with the movable slider of displacement transducer (18) by welding.
5. a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor described in claim 1, rotating threaded shaft is passed through described in it is characterized in that, screw thread on left-handed leading screw (12) and dextrorotation leading screw (15) reversely rotates, hobbing cutter support (4) position is driven to slide, the distance between hobbing cutter support (4) is made to change, adapt to 17 cun, the installation of 19 cun of type hobboing cutters (5).
6. a kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor described in claim 1, it is characterized in that the magnitude of voltage that the distance value that described single-chip microcomputer (34) record displacement transducer (18) exports exports with current vortex sensor (24), simulate the fitting coefficient relative to hob abrasion amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410578197.7A CN105627900B (en) | 2014-10-27 | 2014-10-27 | A kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor |
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| CN201410578197.7A CN105627900B (en) | 2014-10-27 | 2014-10-27 | A kind of automatic calibration device measuring TBM hob abrasion amount current vortex sensor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107144211A (en) * | 2017-05-24 | 2017-09-08 | 大连理工大学 | A kind of eddy current displacement sensor quick calibrating method |
| CN107621220A (en) * | 2017-08-03 | 2018-01-23 | 大连理工大学 | A kind of space geometry scaling method of eddy current displacement sensor display |
| CN107843294A (en) * | 2017-12-08 | 2018-03-27 | 中铁二十局集团有限公司 | A kind of portable all standing shield hob abrasion monitoring device |
| CN108731629A (en) * | 2018-07-02 | 2018-11-02 | 北京工业大学 | hob abrasion measuring device |
| CN109765399A (en) * | 2019-01-18 | 2019-05-17 | 中铁工程装备集团有限公司 | The calibration facility of hobboing cutter device for dynamically detecting |
| CN110924966A (en) * | 2019-12-05 | 2020-03-27 | 湖南师范大学 | Novel shield spherical tooth hob for rock breaking test |
| CN110987155A (en) * | 2019-12-17 | 2020-04-10 | 山东大学 | TBM hob loss state real-time monitoring device and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107144211A (en) * | 2017-05-24 | 2017-09-08 | 大连理工大学 | A kind of eddy current displacement sensor quick calibrating method |
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| CN107843294A (en) * | 2017-12-08 | 2018-03-27 | 中铁二十局集团有限公司 | A kind of portable all standing shield hob abrasion monitoring device |
| CN108731629A (en) * | 2018-07-02 | 2018-11-02 | 北京工业大学 | hob abrasion measuring device |
| CN109765399A (en) * | 2019-01-18 | 2019-05-17 | 中铁工程装备集团有限公司 | The calibration facility of hobboing cutter device for dynamically detecting |
| CN110924966A (en) * | 2019-12-05 | 2020-03-27 | 湖南师范大学 | Novel shield spherical tooth hob for rock breaking test |
| CN110987155A (en) * | 2019-12-17 | 2020-04-10 | 山东大学 | TBM hob loss state real-time monitoring device and method |
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| CN105627900B (en) | 2018-08-14 |
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