CN105627899A - Online real-time shield scraper wear monitoring system - Google Patents
Online real-time shield scraper wear monitoring system Download PDFInfo
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- CN105627899A CN105627899A CN201610127886.5A CN201610127886A CN105627899A CN 105627899 A CN105627899 A CN 105627899A CN 201610127886 A CN201610127886 A CN 201610127886A CN 105627899 A CN105627899 A CN 105627899A
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- metal sleeve
- spring
- shield structure
- shell
- monitoring system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an online real-time shield scraper wear monitoring system, which comprises a shield scraper, a wear sensing device, a data acquisition circuit and a data processing module, wherein the wear sensing device comprises a metal box shell, the metal box shell is internally provided with multiple vertical and horizontal equidistantly-arranged steel sheets and spring trigger modules, the metal box shell is fixedly arranged on the back surface of the shield scraper, the horizontal steel sheets are shortened step by step from top to bottom, the lower ends of the spring trigger modules are fixedly connected with the lower end of the metal box shell, and the upper ends of the spring trigger modules abut against the horizontal steel sheets; the data acquisition circuit is formed by multiple parallel resistors, a power supply and a switch in serial connection via wires and each resistor is connected with a movable block in a corresponding spring trigger module via a wire; and the data processing module comprises a single chip microcomputer processor and a wireless transmitting module. Thus, real-time monitoring can be carried out on the wear amount of the shield scraper, the sensitivity and the range are adjustable, intrusion of water and rock slag can be prevented, and the system can be applied to a harsh shield tunneling environment.
Description
Technical field
The invention belongs to underground Tunnel Engineering mechanized construction and machinery intellectual monitoring field, it relates to the application of novel sensor, it is specifically related to a kind of shield structure blade wears on-line real time monitoring system.
Background technology
Shield construction has been widely used in city underground rail construction, shield structure scraper tunnels in earth and causes abrasion, abrasion loss will seriously reduce drivage efficiency more than 20mm, causes construction delay or even card machine, and the abrasion loss of real-time perception scraper carrying out is changed significant.
Being work with pressure between shield cutter and tunnel face, the method entering cutterhead internal measurement blade wears amount by staff has bigger danger; By Theoretical Calculation or construction experience blade wears amount estimated and also there is stronger engineering dependency, it is difficult to be promoted. Scraper is directly measured by the most feasible method exactly by sensor at present, to obtain its abrasion loss. The research of existing this respect both at home and abroad, such as Chinese invention patent (publication number CN201540105U) proposes a kind of method utilizing ultrasonic thickness test device to obtain shield cutter abrasion loss, the method needs to change cutter structure, at cutter placed inside ultrasonic thickness test device; Chinese invention patent (publication number CN102288099A) discloses a kind of resistor chain formula shield machine scraper abrasion on-Line Monitor Device, the resistance arranged by fixed spacing is placed in scraper, the abrasion of scraper causes the change of resistance, thus extrapolate abrasion loss, this method still needs to change blade construction, and shield engine works in muddy water, monitoring result also can be produced certain impact by muddy water conduction; Chinese utility model patent (publication number CN203432558U) proposes a kind of device utilizing pressure transmitter to carry out the monitoring of shield structure blade wears, but blade wears only can be reported to the police by this method to during certain value, can not realize the on-line real time monitoring of scraper.
In sum, at present the monitoring method of shield structure blade wears all being existed certain deficiency, indirect inspection method error is too big, and direct measurement needs to change scraper internal structure more, it is difficult to realize, thus needs to propose a kind of new shield structure blade wears on-line real time monitoring method.
Summary of the invention
For solving the problem, the present invention provides a kind of shield structure scraper on-line real time monitoring device, it is possible to realize the real-time perception to its abrasion loss on the basis not changing shield structure scraper internal structure.
Its concrete technical scheme is:
A kind of shield structure blade wears on-line real time monitoring system, comprise shield structure scraper, abrasion perception device, data acquisition circuit, and the data processing module being connected with data acquisition circuit, it is characterized in that: described abrasion perception device comprises can shell, the steel disc that multiple vertical and horizontal are equidistantly arranged in can shell, and the spring of setting in the steel disc interval of longitudinal direction triggers module, described can shell is fixedly arranged on the shield structure scraper back side, described horizontal steel disc under become short step by step, described spring triggers the lower end of module and the lower end of can shell is fixedly linked, the steel disc of arranged transversely is withstood in its upper end, described data acquisition circuit is composed in series by wire by the resistance of multiple parallel connection and power supply and switch, each resistance described is all connected by wire with in corresponding spring triggering module removable piece, and described data processing module comprises the processor of single chip computer that the resistance two ends with multiple parallel connection are connected and the wireless transmitter module being connected with processor of single chip computer.
As improvement, described spring triggers module and comprises the outer metal sleeve of upper opening and be located in outer metal sleeve interior metal sleeve moving up and down, it is provided with lower spring between described outer metal sleeve bottom and interior metal sleeve, described interior metal sleeve upper end is provided with spring and is enclosed within spring the spring positioning protective sleeve preventing it from offseting, described upper spring top is by tinsel connection metal bar, described outer metal sleeve bottom and can outer casing bottom are fixedly linked, the steel disc of arranged transversely in can shell is withstood in described metallic rod upper end, it is connected by the wire that stretches between described outer metal sleeve bottom and interior metal sleeve top and connects with corresponding resistance.
As improvement, it is provided with metal shell fragment in described interior metal sleeve, described interior metal sleeve lateral wall is provided with aperture, the aperture that interior metal sleeve lateral wall is stretched out in described metal shell fragment bottom withstands on outer metal sleeve lining, described outer metal sleeve lining is provided with and the aperture matched in metal shell fragment bottom, when interior metal sleeve upwards moves a segment distance relative to outer metal sleeve, the metal shell fragment stretched out from interior metal sleeve lateral wall aperture is just stuck in outer metal sleeve lining aperture, thus interior metal sleeve and outer metal sleeve relative position are fixed.
As improvement, steel disc upper space filling epoxy resin horizontal in described can shell, to improve the rigidity of can shell.
As improvement, described data acquisition circuit, processor of single chip computer and be all placed in tetrafluoroethylene protection case with wireless transmitter module, tetrafluoroethylene protection case is arranged in the anti-damage in the cutterhead back side of shield structure scraper.
The invention has the beneficial effects as follows:
The present invention provides a kind of brand-new shield structure blade wears on-line real time monitoring system, it is possible to not changing the internal structure of shield structure scraper and obtain abrasion loss, range and precision all can regulate according to actual needs, it is possible to meet shield structure blade wears amount monitoring needs. The main circuit part of whole Monitoring systems is all arranged in cutterhead tetrafluoroethylene protection case behind, and only trigger device directly contacts with earth, prevents the damage of Circuits System. Wear signal is sent by wireless transmission device, avoids the difficulty of wiring.
Accompanying drawing explanation
Fig. 1 is shield structure scraper and abrasion perception device relative position figure.
Fig. 2 is shield structure blade wears on-line monitoring system structural representation.
Fig. 3 is that spring triggers modular structure schematic detail view.
Fig. 4 is resistance partial circuit diagram in parallel.
Fig. 5 is magnitude of voltage and abrasion value graph of a relation.
Wherein, shield structure scraper 1, steel disc 2, epoxy resin 3; metallic rod 4, can shell 5, tinsel 6, upper spring 7; spring positioning protective sleeve 8, outer metal sleeve 9, interior metal sleeve 10, metal shell fragment 11; lower spring 12, glue 13, tetrafluoroethylene protection case 14, resistance 15; 100 �� fixed value resistance 16,3.2V direct supply 17, A switches 18, processor of single chip computer 19; wireless transmitter module 20,5V direct supply 21, B switch 22, wire 23.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of shield structure blade wears on-line real time monitoring system as shown in Figure 1 to Figure 3, comprise shield structure scraper 1, abrasion perception device, data acquisition circuit, the data processing module being connected with data acquisition circuit and the wireless transmitter module 20 being connected with data processing module, described abrasion perception device comprises the steel disc 2, epoxy resin 3, can shell 5 and the spring that arrange in length and breadth and triggers module, can shell 5 is welded by thick iron plate, internal structure is protected at four sides, and is welded in shield structure scraper 1 back side; The described steel disc 2 arranged in length and breadth is all with fixed spacing arrangement in can, and horizontal steel disc 2 becomes short step by step, longitudinal elongated layout of steel disc 2, lays spring and trigger module in the interval that longitudinal steel disc 2 is formed;
Described spring triggers module and comprises metallic rod 4, tinsel 6, upper spring 7, spring positioning protective sleeve 8, outer metal sleeve 9, interior metal sleeve 10, metal shell fragment 11, lower spring 12 and glue 13, lower spring 12 bottom is connected with bottom outer metal sleeve 9, top is connected with interior metal sleeve 10, it is fixedly linked bottom described outer metal sleeve 9 with bottom can shell 5, in interior metal sleeve 10, arranges metal shell fragment 11; Upper spring 7 bottom is connected with interior metal sleeve 10 top board, and top is by tinsel 6 connection metal bar 4, and upper spring 7 is protected by spring positioning protective sleeve 8, prevents it from offseting, the steel disc 2 of arranged transversely in the can shell 5 of top, metallic rod 4 top;
Described interior metal sleeve 10 sidewall is provided with aperture, the aperture that interior metal sleeve 10 sidewall is stretched out in described metal shell fragment 11 bottom withstands on outer metal sleeve 9 inwall, described outer metal sleeve 9 inwall is provided with and the aperture matched in metal shell fragment 11 bottom, when interior metal sleeve 10 upwards moves a segment distance relative to outer metal sleeve 9, the metal shell fragment 11 stretched out from interior metal sleeve 10 sidewall aperture is just stuck in outer metal sleeve 9 inwall aperture, thus interior metal sleeve 10 and outer metal sleeve 9 relative position are fixed.
Described data acquisition circuit comprises resistance 15,100 �� fixed value resistance 16,3.2V direct supply 17, A switch 18, described resistance 15 is 2K �� fixed value resistance, the resistance 15 of some 2K �� is in parallel, the wire 23 of shunt circuit connects outside corresponding position bottom metal sleeve 9 and interior metal sleeve 10 top board, fix with glue 13, wire 23 stretches and reserves 2-3mm space, to prevent wire 23 is broken in lower spring 12 shake;
Described data processing module comprises processor of single chip computer 19,5V direct supply 21, B switch 22 and wireless transmitter module 20, processor of single chip computer 19 voltage fetching portion connects resistance 15 two ends in parallel in data acquisition circuit, and the voltage signal of acquisition is converted into wear signal, send by wireless transmitter module 20.
The magnitude of voltage that described processor of single chip computer 19 obtains resistance 15 two ends in parallel changes with the change of abrasion loss, one-to-one relationship is there is in magnitude of voltage with abrasion value, when this Monitoring systems wear monitoring range is 20mm, when sensitivity is 1mm, Fig. 5 as shown in Figure 5, is carried out matching and obtains relational expression and be by magnitude of voltage and abrasion magnitude relationship:
��=2.7502V6-27.379V5+112.17V4-244.53V3+305.6V2-218.56V+78.753
Wherein, �� is shield structure blade wears amount; V is resistance 15 both end voltage value in parallel.
Described a kind of shield structure blade wears on-line real time monitoring system works flow process is: the can shell 5 being welded in shield structure scraper 1 back side weares and teares along with blade wears, often wear up to the steel disc 2 of a transverse direction, steel disc 2 cannot bear the pressure of metallic rod 4, metallic rod 4 ejects, upper spring 7 and lower spring 12 extend and eject interior metal sleeve 10, wire 23 is pulled off, and for preventing metallic rod 4 from returning by compression, in interior metal sleeve 10, metal shell fragment 11 ejecting card is outside in metal sleeve 9 inwall aperture; The voltage signal that processor of single chip computer 19 obtains changes due to resistance 15 reduced number of parallel connection, is corresponding abrasion loss in internal conversion and is sent by wireless transmitter module 20.
Claims (5)
1. a shield structure blade wears on-line real time monitoring system, comprise shield structure scraper (1), abrasion perception device, data acquisition circuit, and the data processing module being connected with data acquisition circuit, it is characterized in that: described abrasion perception device comprises can shell (5), the steel disc (2) that multiple vertical and horizontal are equidistantly arranged in can shell (5), and the spring of setting in steel disc (2) interval of longitudinal direction triggers module, described can shell (5) is fixedly arranged on shield structure scraper (1) back side, described horizontal steel disc (2) under become short step by step, described spring triggers the lower end of module and can shell (5) lower end is fixedly linked, the steel disc (2) of arranged transversely is withstood in its upper end, described data acquisition circuit is composed in series by wire (23) by the resistance (15) of multiple parallel connection and power supply and switch, described each resistance (15) is all connected by wire (23) with in corresponding spring triggering module removable piece, and described data processing module comprises the processor of single chip computer (19) that resistance (15) two ends with multiple parallel connection are connected and the wireless transmitter module (20) being connected with processor of single chip computer (19).
2. a kind of shield structure blade wears on-line real time monitoring system as claimed in claim 1, it is characterized in that: described spring triggers module and comprises the outer metal sleeve (9) of upper opening and be located in outer metal sleeve (9) interior metal sleeve (10) moving up and down, it is provided with lower spring (12) between described outer metal sleeve (9) bottom and interior metal sleeve (10), the spring positioning protective sleeve (8) that described interior metal sleeve (10) upper end is provided with spring (7) and is enclosed within spring (7), described upper spring (7) top is by tinsel (6) connection metal bar (4), described outer metal sleeve (9) bottom is fixedly linked with can shell (5) bottom, the steel disc (2) of can shell (5) interior arranged transversely is withstood in described metallic rod (4) upper end, between described outer metal sleeve (9) bottom and interior metal sleeve (10) top connected and connect with corresponding resistance (15) by the wire (23) that stretches.
3. a kind of shield structure blade wears on-line real time monitoring system as claimed in claim 2, it is characterized in that: in described interior metal sleeve (10), be provided with metal shell fragment (11), described interior metal sleeve (10) sidewall is provided with aperture, the aperture that interior metal sleeve (10) sidewall is stretched out in described metal shell fragment (11) bottom withstands on outer metal sleeve (9) inwall, described outer metal sleeve (9) inwall is provided with and the aperture matched in metal shell fragment (11) bottom, when interior metal sleeve (10) upwards moves a segment distance relative to outer metal sleeve (9), the metal shell fragment (11) stretched out from interior metal sleeve (10) sidewall aperture is just stuck in outer metal sleeve (9) inwall aperture, thus interior metal sleeve (10) and outer metal sleeve (9) relative position are fixed.
4. a kind of shield structure blade wears on-line real time monitoring system as claimed in claim 2, it is characterised in that: steel disc (2) upper space filling epoxy resin (3) horizontal in described can shell (5).
5. such as any one shield structure blade wears on-line real time monitoring system of Claims 1-4; it is characterized in that: described data acquisition circuit, processor of single chip computer (19) and be all placed in tetrafluoroethylene protection case (14) with wireless transmitter module (20), tetrafluoroethylene protection case (14) is arranged in the cutterhead back side of shield structure scraper (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610127886.5A CN105627899B (en) | 2016-03-07 | 2016-03-07 | A kind of shield blade wears on-line real time monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610127886.5A CN105627899B (en) | 2016-03-07 | 2016-03-07 | A kind of shield blade wears on-line real time monitoring system |
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| Publication Number | Publication Date |
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| CN105627899A true CN105627899A (en) | 2016-06-01 |
| CN105627899B CN105627899B (en) | 2018-03-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397236A (en) * | 2018-03-12 | 2018-08-14 | 安徽理工大学 | A kind of accurate monitoring device of roof delamination |
| CN109296375A (en) * | 2018-11-28 | 2019-02-01 | 中国矿业大学(北京) | The wear monitoring point method for arranging and wear monitoring method of the fast rail tunneling shield rounding machine cutter of major diameter administrative region of a city |
| CN109779648A (en) * | 2019-03-14 | 2019-05-21 | 中铁工程装备集团有限公司 | A kind of protective device based on tool wear sensor line and receiving instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397236A (en) * | 2018-03-12 | 2018-08-14 | 安徽理工大学 | A kind of accurate monitoring device of roof delamination |
| CN109296375A (en) * | 2018-11-28 | 2019-02-01 | 中国矿业大学(北京) | The wear monitoring point method for arranging and wear monitoring method of the fast rail tunneling shield rounding machine cutter of major diameter administrative region of a city |
| CN109779648A (en) * | 2019-03-14 | 2019-05-21 | 中铁工程装备集团有限公司 | A kind of protective device based on tool wear sensor line and receiving instrument |
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| CN105627899B (en) | 2018-03-27 |
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