CN202562452U - Cutter wearing detection device for tunnel shield construction - Google Patents
Cutter wearing detection device for tunnel shield construction Download PDFInfo
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- CN202562452U CN202562452U CN 201220125474 CN201220125474U CN202562452U CN 202562452 U CN202562452 U CN 202562452U CN 201220125474 CN201220125474 CN 201220125474 CN 201220125474 U CN201220125474 U CN 201220125474U CN 202562452 U CN202562452 U CN 202562452U
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Abstract
The present utility model discloses a cutter wearing detection device for the tunnel shield construction industry. The device comprises a plurality of detection cutters provided with oil chambers, a shield body hydraulic system, a hydraulic oil output pipeline for connecting opening ends of the oil chambers of the cutters and the shield body hydraulic system, and a hydraulic oil pipe of a hydraulic system overflow loop. the hydraulic oil pipe is provided with a pressure sensor, an oil pipe of each oil chamber opening end is correspondingly provided with an overflow valve; the hydraulic system overflow loop is provided with an electromagnetic pressure valve, and the electromagnetic pressure valve and the pressure sensor are all connected with an automatic control system. In the device, one hydraulic pipeline of a central rotating shaft is used for measuring a plurality of pressure values, thus different wearing degrees of a cutter can be calculated; shortages that in the traditional hydraulic detection, a single hydraulic loop can not be used for detecting a plurality of pressure values can be solved, and problems of large electrical control interferences, unreliability and increased central rotating processing difficult can be solved.
Description
Technical field
The utility model relates to a kind of cutter abrasion detection device, is meant a kind of cutter abrasion detection device that is used for the tunneling shield construction especially, is applicable to the abrasion detection of shield cutter.
Background technology
Along with the acceleration of China's modernization construction, subway tunnel, municipal tunnel, highway water power tunnel increase gradually, and the shield structure has obtained using widely with its advantageous advantage in constructing tunnel.Shield cutter is as the shield driving critical component, directly determined the length, driving ability of efficient, the driving of construction etc., so the abrasion detection of cutter seems particularly important in shield tunnel construction.
The cutter abrasion detection device of a kind of practicality with intelligence all explored by shield structure producer both at home and abroad; Through understanding the wear detector of different manufacturers such as Mitsubishi, German extra large Rake, U.S. Luo Binsi, Shenyang heavy industry; Sum up existing tool wear detection mode and have three kinds: a kind of is electrical, comprises metal probe detection, ultrasound examination etc.; A kind of is that hydraulic pressure detects; Also having a kind of is that chemical gas detects.
Electrical is generally through a sensor tool wear degree that is arranged in the cutter; For example the initial contact of metal probe sensor is cutter metal inner casing; After the metal of probe contact grinds off; The metal probe sensor will feedback a signal, can know the wear extent of cutter through this signal.But there are two serious defectives in electric abrasion detection, at first, in the shield machine progradation, the environment very severe of cutterhead front and Tu Cang, electrical equipment generally is difficult in the reliability that guarantees its work under such rugged environment; Secondly, electric wiring bothers through center steering very much, has increased the difficulty of processing of center steering.
Traditional hydraulic pressure abrasion detection is provided with a pressure transducer through a fluid pressure line, calculates the wear extent of cutter then according to pressure transducer, and this detection method is because electrical equipment is arranged on shield body the inside; So testing result is simple and reliable; But because the rotating space constraint of acceptor center, the fluid pressure line quantity of passing through is very limited, thereby the wear extent that can test is also very limited; Usually have only 1-2 position probing, abrasion condition that can not the effecting reaction cutter.
The chemical gas pick-up unit is measured tool abrasion through a certain amount of chemical gas that is easy to detect of compression in the cutter cavity; When tool wear arrives cavity; A large amount of chemical gas distribute; A part is passed to the screw machine soil outlet, through near the wear extent of the gas-detecting device indirect detection cutter the screw machine soil outlet, set up.The advantage of this chemical gas detection method is that equipment is simple, processing ease.Shortcoming is in practical application, and gas is difficult to detect and be difficult to confirm to discharge the position of cutter when discharging.
Can find out that through above analysis conventional wear detects because the restriction of acceptor center revolving shaft size realizes that on cutterhead the multiple spot multiposition detects the bigger difficulty of existence.
The utility model content
The purpose of the utility model is to provide a kind of cutter abrasion detection device that is used for tunneling shield construction industry; Be intended to solve existing tool wear detection method owing to receive the restriction of shield machine center steering shaft size, on cutterhead, be difficult to realize the problem that the multiple spot multiposition is detected.
To achieve these goals, the technical scheme of the utility model employing is following:
A kind of cutter abrasion detection device that is used for tunneling shield construction industry; Comprise: a plurality of band oil pockets detect cutter, shield body fluid pressing system and connect the hydraulic oil output pipe of said detection cutter oil pocket openend and shield body fluid pressing system, the hydraulic oil pipe of hydraulic system skimmer circuit; This hydraulic oil pipe is provided with pressure transducer, and correspondence is provided with surplus valve on the oil pipe of each oil pocket openend; Said hydraulic oil skimmer circuit is provided with electromagnetic pressure valve, and said electromagnetic pressure valve, pressure sensor device all connect automatic control system.
Also comprise warning device, be connected with said automatic control system.
Said detection cutter is the inner cutter that has the different depth blind hole.
Said hydraulic oil output pipe is provided with pressure switch.
Described automatic control system is the PLC control system.
Compared with prior art the utlity model has following characteristics and beneficial effect:
The novel wear detector of the utility model connects the oil pocket openend of shield body fluid pressing system and a plurality of detection cutters through a hydraulic oil pipe; And on the oil pipe of oil pocket open end, be provided with have different oil pressure reliefs, correspondence has the surplus valve of the detection cutter of different wear extenies; Should detect oil pressure in the cutter oil pocket with control; Realized measuring a plurality of force value and then extrapolating the different degrees of wear that detect cutter, detected the attrition value of a plurality of detection cutters through fluid pressure line of center steering axle; Solved conventional hydraulic and detected the defective that can not the wall scroll hydraulic circuit detects a plurality of force value, also solved electrical control disturb big, unreliable, increased problem such as center steering difficulty of processing; In addition, the utility model control procedure is simple and reliable, and wear data can be incorporated into the original PLC control system of shield machine.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Fig. 1 is the structural representation of a kind of cutter abrasion detection device of providing of the utility model embodiment.
Fig. 2 is the connection synoptic diagram of a plurality of detection cutters of providing of the utility model embodiment.
Fig. 3 is the detection tool structures synoptic diagram that the utility model embodiment provides.
The biliquid that Fig. 4 the utility model embodiment provides is pressed the structural representation of wear detector.
Fig. 5 is the detection method process flow diagram of a kind of cutter abrasion detection device of providing of the utility model embodiment.
Reference numeral: 1-detects cutter, 2-surplus valve, 3-pressure transducer, 4-electromagnetic pressure valve, 5-hydraulic reservoir, 6-Level Detection switch, 7-ball valve, 8-filter core, 9-pressure switch, 10-hydraulic oil pump, 11-oil pocket.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing.
The utility model wear detector is the degree of wear of confirming cutter through the wear extent that detects cutter, for the shield structure makes smooth advances effective support is provided.
Shown in Fig. 1-2; A kind of cutter abrasion detection device that is used for tunneling shield construction industry; Comprise: the detection cutter 1 of a plurality of band oil pockets 11, shield body fluid pressing system and connect said detection cutter 1 oil pocket openend and the hydraulic oil output pipe of shield body fluid pressing system, the hydraulic oil pipe A of hydraulic system skimmer circuit; This hydraulic oil pipe is provided with pressure transducer 3, the corresponding surplus valve 2 that is provided with oil pressure in this detection cutter oil pocket of control, has the certain pressure value on the oil pipe of each oil pocket openend; Said hydraulic oil skimmer circuit is provided with electromagnetic pressure valve 4, and said electromagnetic pressure valve 4, pressure sensor device all connect automatic control system.
Referring to Fig. 3; Each detects cutter corresponding wear extent b is set, and this wear extent b characterizes through the vertical range that detects cutter top and inner oil pocket top, and different distances is represented different wear extenies; Corresponding, the different hydraulic oil oil pressure that wherein different wear extenies is corresponding; For example, detection tool abrasion b is set is respectively 3cm, 6cm, 10cm, 15cm, 20cm, its corresponding respectively hydraulic oil oil pressure is 13bar, 11 bar, 9bar, 7bar, 5bar.
Wherein, said shield body fluid pressing system comprises hydraulic reservoir 5, hydraulic oil pump 10 and the motor of power is provided for said hydraulic oil pump 10.Concrete, the utility model hydraulic reservoir capacity is 50L, adopts 2.2kW driven by motor hydraulic oil pump, and 15bar can be provided above pressure.
More excellent, said hydraulic reservoir is provided with Level Detection switch 6.
Further, said hydraulic oil output circuit is provided with pressure switch 9 that detects the fluid filtration and the filter core 8 that filters hydraulic oil.
Wherein, on described confining liquid pressuring oil pipe, be provided with ball valve 7.
The utility model pick-up unit also comprises warning device, is connected with said automatic control system.In addition, in the utility model device, also be provided with the surplus valve that prevents that hydraulic oil from refluxing on the hydraulic oil output pipe and on the hydraulic oil skimmer circuit, on hydraulic reservoir and oil circuit that hydraulic oil pump is connected, be provided with devices such as ball valve.
The described automatic control system of the utility model is the PLC control system.This control system can be a control system independently, also can be incorporated in the PLC control system of shield machine.
Manyly be arranged on detection cutter 1 on the cutterhead, every a surplus valve 2 in the corresponding cutterhead hydraulic circuit of detection cutter, come the variation of detection system force value through preset different oil pressure relief, thereby obtain the degree of wear of the cutter in the tunneling process.
The utility model is many abrasion detection cutter 1 through on cutterhead, being provided with; Every a surplus valve 2 in the corresponding cutterhead hydraulic circuit of abrasion detection cutter; Come the variation of detection system force value through preset different oil pressure relief, thereby obtain the tool wear degree in the tunneling process.
The utility model is controlled the oil pressure in the cutter oil pocket through preset several surplus valves 2 with certain pressure value in needs detect cutter 1; When the oil pressure that provides at shield body fluid pressing system reaches certain pressure; Corresponding surplus valve 2 is open-minded in the cutter; When system oil pressure was reduced to certain pressure, corresponding surplus valve 2 ended in the cutter.
The oil pressure of the utility model hydraulic system is controlled through a hydraulic oil pump 10 and an electromagnetic pressure valve 4, and the control of electromagnetic pressure valve 4 is based on the measured data of high-precision pressure transducer 3, and pressure transducer 3 degree of accuracy can reach 0.01bar; Pressure transducer 3 is unique judgement sources that system builds pressure, and system builds pressure and controls oil pressure relief through an electromagnetic pressure valve 4, system pressure can be reported remain the pressure that needs accurately.
The utility model pick-up unit comprises hydraulic control system and electric control system; Hydraulic control system is pressed the pressure of oil through surplus valve 2 control cutter oil intraluminal fluids; Electric control system is passed through the pressure of electromagnetic pressure valve 4 regulating system hydraulic oil then through the pressure of hydraulic oil in the pressure transducer 3 detection system oil pipes.The utility model has been realized that single fluid pressure line detects a plurality of force value, thereby can have been detected a plurality of wear extenies through the cooperation of hydraulic system and electrical system.
This novel wear detector is applied on the shield machine, and its major part is installed on the shield machine shield body and the cutterhead position, and wherein, hydraulic oil pipe is located at center steering axle the inside, and surplus valve is located in the cutterhead, detects cutter and is located at corresponding position on the cutterhead.
The utility model according to the flooded conditions of cutter hydraulic circuit, can record a plurality of force value, and then can calculate the different degrees of wear of cutter through the detection cutter that the surplus valve correspondence that has different oil pressure reliefs in the setting of cutterhead the inside has different wear extenies; In addition, through being set in the representative position of cutterhead, the detection cutter that detects differing heights confirms the abrasion condition that cutterhead is fixed a cutting tool.
The utility model cutter abrasion detection device, measurement range scope are wider, and the wear intensity that can contain 5 grades of 3mm-20mm scope detects; Can detect 3mm, 6mm, 10mm, 15mm, five different wear extenies of 20mm, pressure remains on the scope of 3-15bar, and according to the construction experience in the reality, this is one group of relatively reasonably degree of detection.Certainly, in special formation, these several wear datas can also be made suitable adjustment.
Referring to Fig. 1 and Fig. 5, this detection method that is applied to the cutter abrasion detection device in the tunneling shield construction, step is following:
Step 3, surpass 3mm when wear extent; The surplus valve of the detection cutter the inside of corresponding 3mm wear extent begins draining, and system oil pressure can not maintain 14bar again, and this moment, system oil pressure can only remain on 13bar; To record this force value through pressure transducer 3; Pass to the plc input end rapidly, the plc program is judged, provides tool abrasion and has surpassed the 3mm warning message.
If after step 5 continued the driving certain distance, tool abrasion further strengthened, when tool wear surpasses 6mm; The cutter internal oil passages pressure release of corresponding 6mm abrasion detection, since the effect of its surplus valve, the 12bar oil pressure before system can't keep; Then keep 6mm wear extent corresponding flooding valve 2 default 11bar oil pressure; Detect this force value through pressure transducer 3, the plc program is judged, provides tool abrasion and has surpassed the 6mm warning message.
Step 6, when if the pressure transducer 3 that is located at the shield body position records oil pressure 11bar; The oil pressure relief that program is regulated electromagnetic pressure valve 4 at once is 10bar; Preset pressure is that the surplus valve of 11bar turn-offs immediately; No longer leakage of oil, system is through electromagnetic pressure valve 4 overflow hydraulic return fuel tanks, and the oil pressure of total system will maintain 10bar this moment; The surplus valve that wherein preset oil pressure relief is 13bar, 11bar continues the state of keeping shut, and all the other detect cutter corresponding flooding valve and are held open state.
If step 7 continues the driving wearing and tearing, the system works principle is similar as above to be analyzed.Thereby can detect each attrition value in various degree through system liquid pressure pressure value is different,, can set more wear monitoring point in order to ensure the accuracy of system.
The utility model wear detector electrical equipment is considerably less; Can be incorporated into shield machine PLC electric control system the inside; This wear detector has intelligent data management function and man-machine interface, through being connected with shield machine PLC electric control system, through the plc data library management; Can in time feed back tool abrasion and alarm set point position, safe reliability is high; Through calculating the rate of wear in each stage, make corresponding driving operation adjustment in conjunction with geologic report.
In practical application,, when producing uneven wear, will produce wrong report if geologic condition is more abominable.Under these circumstances, can consider to increase the duplicate abrasion detection control system of a cover.
Referring to Fig. 4; This abrasion detection control system includes two hydraulic oil pipe B, C; These two hydraulic oil pipe B, C be a plurality of detection cutters 1 of corresponding connection respectively; Each detects cutter and is provided with different wear extenies, the force value that each wear extent is corresponding different, and concrete wear extent and force value can be set according to the real work needs; The oil pipe of corresponding each detection cutter is provided with corresponding surplus valve 2; Be located at ball valve 7 and pressure transducer 3 on each hydraulic oil pipe; Each hydraulic oil skimmer circuit is provided with pressure solenoid valve 4; The hydraulic oil output circuit is provided with pressure switch 9 and filter core 8, through the hydraulic system that includes hydraulic reservoir 5, hydraulic oil pump 10 and motor used hydraulic pressure is provided, and said hydraulic reservoir 5 is provided with Level Detection switch 6; Simultaneously,, on the hydraulic oil output pipe, also be provided with the surplus valve that prevents hydraulic oil and reflux, corresponding one-way on-off valve, on hydraulic reservoir 5 and oil circuit that hydraulic oil pump 10 is connected, be provided with ball valve 7 devices such as grade in order to make this device more effective.
Its concrete principle is not described in detail with above-mentioned cutter abrasion detection device.Just work as two control system and detect same wear extent; During such as 10mm, program thinks that just tool wear has reached this degree, thereby can reduce wrong report to a certain extent; The reliability of increase system and accuracy; Also increase a fluid pressure line at center steering simultaneously, the reasonable Arrangement that detects cutter also is an important factors, and the detection cutter of reasonable Arrangement can embody wearing and tearing accurately.
This wear detector utility model significant through gathering the wear data of some, combines corresponding geological report, can obtain a complete cutterhead abrasion analysis data report, and this research to shield cutter is significant.
This novel wear detector utility model, advantage is very obvious, and the cutterhead the inside has no electrical equipment, has avoided electrical Interference; Having only a hydraulic circuit through the center steering axle, reduced the difficulty of processing of center steering axle, is a kind of device that utilizes the wall scroll fluid pressure line to detect a plurality of force value, has realized utilizing a fluid pressure line to detect the detection technique of multiple spot.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (5)
1. cutter abrasion detection device that is used for tunneling shield construction industry; It is characterized in that; Comprise: a plurality of band oil pockets detect cutter (1), shield body fluid pressing systems and connect said detection cutter (1) oil pocket openend and the hydraulic oil output pipe of shield body fluid pressing system, the hydraulic oil pipe of hydraulic system skimmer circuit; This hydraulic oil pipe is provided with pressure transducer (3), and correspondence is provided with surplus valve (2) on the oil pipe of each oil pocket openend; Said hydraulic oil skimmer circuit is provided with electromagnetic pressure valve (4), and said electromagnetic pressure valve (4), pressure sensor device all connect automatic control system.
2. the cutter abrasion detection device that is used for tunneling shield construction industry according to claim 1 is characterized in that, also comprises warning device, is connected with said automatic control system.
3. the cutter abrasion detection device that is used for tunneling shield construction industry according to claim 1 is characterized in that, said detection cutter (1) is the inner cutter that has the different depth blind hole.
4. the cutter abrasion detection device that is used for tunneling shield construction industry according to claim 1 is characterized in that said hydraulic oil output pipe is provided with pressure switch (9).
5. the cutter abrasion detection device that is used for tunneling shield construction industry according to claim 1 and 2 is characterized in that described automatic control system is the PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220125474 CN202562452U (en) | 2012-03-29 | 2012-03-29 | Cutter wearing detection device for tunnel shield construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220125474 CN202562452U (en) | 2012-03-29 | 2012-03-29 | Cutter wearing detection device for tunnel shield construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562452U true CN202562452U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220125474 Expired - Fee Related CN202562452U (en) | 2012-03-29 | 2012-03-29 | Cutter wearing detection device for tunnel shield construction |
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| Country | Link |
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| CN (1) | CN202562452U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620692A (en) * | 2012-03-29 | 2012-08-01 | 中建市政建设有限公司 | Tool wear detecting device and method in tunnel shield construction |
| CN108367449A (en) * | 2015-12-18 | 2018-08-03 | 利乐拉瓦尔集团及财务有限公司 | The cutter of bottle placer monitors system |
| CN111425212A (en) * | 2020-04-16 | 2020-07-17 | 张振增 | Hob group control hydraulic monitoring system |
-
2012
- 2012-03-29 CN CN 201220125474 patent/CN202562452U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620692A (en) * | 2012-03-29 | 2012-08-01 | 中建市政建设有限公司 | Tool wear detecting device and method in tunnel shield construction |
| CN102620692B (en) * | 2012-03-29 | 2014-10-22 | 中建交通建设集团有限公司 | Tool wear detecting device and method in tunnel shield construction |
| CN108367449A (en) * | 2015-12-18 | 2018-08-03 | 利乐拉瓦尔集团及财务有限公司 | The cutter of bottle placer monitors system |
| CN111425212A (en) * | 2020-04-16 | 2020-07-17 | 张振增 | Hob group control hydraulic monitoring system |
| CN111425212B (en) * | 2020-04-16 | 2022-08-16 | 张振增 | Hob group control hydraulic monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20200329 |