CN102445143B - Device for detecting wear of apparatus and shield machine provided with same - Google Patents
Device for detecting wear of apparatus and shield machine provided with same Download PDFInfo
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- CN102445143B CN102445143B CN 201110286990 CN201110286990A CN102445143B CN 102445143 B CN102445143 B CN 102445143B CN 201110286990 CN201110286990 CN 201110286990 CN 201110286990 A CN201110286990 A CN 201110286990A CN 102445143 B CN102445143 B CN 102445143B
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- resistance unit
- utensil
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- wear
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Abstract
The invention provides a device for detecting wear of an apparatus and a shield machine provided with the same. The device for detecting the wear of the apparatus provided by the invention comprises a resistance unit which is arranged on the apparatus to be detected and can be worn synchronously along with the apparatus, wherein the resistance unit is connected to a fixed-voltage loop; the current intensity of the resistance unit corresponds to the wearing capacity of the resistance piece one by one; and the wearing capacity of the resistance unit corresponds to the wearing capacity of the apparatus one by one. In the shield machine provided by the invention, the device for detecting the wear of the apparatus is arranged. Due to the adoption of the technical scheme, the device has the advantages of simple structure, low cost and easiness for detecting.
Description
Technical field
The present invention relates to engineering machinery field, more specifically, relate to a kind of shield machine that detects the device of utensil wearing and tearing and have it.
Background technology
Shield machine is easy to be worn when tunneling to stratum such as gravel, gravel, rocks, thereby causes driving cutterhead and cutter life greatly to reduce, and usually makes the boring parameter sudden change, delays the driving duration.Therefore, need the cutter of shield machine and the wearing and tearing of cutter are detected, existing detection method mainly adopts the detection wear condition of gear, personal hydraulic pressure signal detection etc., above-mentioned detection method complex structure, and cost is higher.
Summary of the invention
The present invention is intended to propose a kind of shield machine that detects the device of utensil wearing and tearing and have it, so that the device of a kind of detection cutter simple in structure, lower-cost or cutterhead wearing and tearing to be provided.
According to an aspect of the present invention, provide a kind of device that detects the utensil wearing and tearing, having comprised: resistance unit is installed on the utensil to be detected and also can weares and teares synchronously with utensil; Resistance unit is connected in the level pressure loop, and the strength of current of resistance unit is corresponding one by one with the wear extent of resistance unit, and the wear extent of resistance unit is corresponding one by one with the wear extent of utensil.
Further, the device of these detection utensil wearing and tearing also comprises: current detecting unit, for detection of the strength of current of resistance unit; Processing unit, the strength of current that detects according to current detecting unit calculates the wear extent of utensil.
Further, the device of this detection utensil wearing and tearing also comprises: display unit is used for the wear extent of the utensil that display processing unit calculates.
Further, the device of this detection utensil wearing and tearing also comprises judging unit and alarm unit, and wherein, judging unit is used for whether judging strength of current less than predetermined value, when strength of current during less than predetermined value, sends alerting signal by alarm unit.
Further, resistance unit is elongated, and the xsect uniformity of resistance unit; Processing unit comprises computing unit, and computing unit is according to following formula I
x* L=I * (L-L
x) calculate the wear extent L of resistance unit
x, wherein, I is the initial current intensity of the resistance unit that records, I under the level pressure loop
xBe the real-time current intensity of resistance unit, L is the initial length of resistance unit.
Further, resistance unit is concordant with the initial position of utensil wear tip near the initial position of an end of utensil wear tip.
Further, resistance unit is a plurality of, and each resistance unit is parallel to the level pressure loop; A plurality of resistance units make each resistance unit corresponding to the different length section in the continuous length scope of utensil along the successively wrong rear setting of wear direction of utensil.
Further, utensil is cutter or the cutterhead that is used for mounting cutter, and resistance unit is embedded in cutter or cutterhead.
Further, cutter or cutterhead are cutter or the cutterhead of shield machine.
According to another aspect of the present invention, also provide a kind of shield machine, this shield machine is provided with the device of above-mentioned detection utensil wearing and tearing.
According to technical scheme of the present invention, because of the utensil that detects abrasion condition at need is equipped with can be with the synchronous resistance unit of wearing and tearing of utensil, resistance unit is connected in the level pressure loop, when resistance unit and utensil wear and tear synchronously, it is large that the resistance of resistance unit becomes gradually, strength of current diminishes gradually, the strength of current of resistance unit is corresponding one by one with the wear extent of resistance unit, the wear extent of resistance unit is corresponding one by one with the wear extent of utensil, namely can pass through easily the degree of wear of the variation perception utensil of strength of current, with respect to prior art, have simple in structure, cost is low, the advantage that is easy to detect.
Description of drawings
The accompanying drawing that consists of a part of the present invention is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structure of first preferred embodiment of the invention;
Fig. 2 has schematically shown the structure of current detecting unit, judging unit and alarm unit in the first preferred embodiment of the invention;
Fig. 3 has schematically shown the preferred implementation of processing unit in the first preferred embodiment of the invention; And
Fig. 4 has schematically shown the structure of second preferred embodiment of the invention.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Show a kind of the first preferred embodiment that detects the device of utensil wearing and tearing of the present invention referring to Fig. 1, as shown in the figure, the device of these detection utensil wearing and tearing comprises resistance unit 1, and resistance unit 1 is connected in the level pressure loop.Resistance unit 1 is installed on the utensil to be detected 2 and can weares and teares synchronously with utensil 2, and this utensil 2 is generally metal material, for example for being used for the cutter that cuts or being the cutterhead of mounting cutter.Among Fig. 1, the arrow direction is the wear direction of utensil 2, the left end of utensil 2 is wear tip 21, resistance unit 1 is concordant with the initial position of utensil wear tip 21 near the initial position of an end of utensil wear tip 21, resistance unit 1 and utensil 2 wear and tear synchronously, make the wear extent (length of namely wearing and tearing) of the wear extent (length of namely wearing and tearing) of resistance unit 1 and utensil 2 identical.Need to prove, for guaranteeing the synchronous wearing and tearing of resistance unit 1 and utensil 2, resistance unit 1 is selected hardness and the much the same material of metal usually, preferably resistance unit 1 is embedded in utensil 2, and resistance unit 1 own vol is usually less, so that resistance unit 1 is not allowed is frangible, can reach and utensil 2 with the degree of life-span wearing and tearing.
As shown in Figure 1, usually resistance unit 1 is connected power supplys away from an end of wear tip 21 by wire 3, form the level pressure loop, so that effective use length of resistance unit 1 reaches the longest.In utensil 2 wear processes, resistance unit 1 reduces to cause the resistance of resistance unit 1 to become large perpendicular to the sectional area of direction of current, strength of current diminishes thereupon, and the wear extent of the strength of current of resistance unit 1 and resistance unit 1 is to concern one to one, the wear extent while of resistance unit 1 also is to concern one to one with the wear extent of utensil 2, can learn thus the wear extent about utensil 2.Such as electric current is not maximum when wearing and tearing occur resistance unit 1, does not does not wear and tear corresponding to utensil 2; After resistance unit 1 weares and teares fully, the level pressure loop open circuit, electric current is zero, utensil 2 weares and teares fully corresponding to the part of resistance unit 1.Like this, the length of resistance unit 1 can rationally be set, the maximum that makes the length of resistance unit 1 equal utensil 2 allows wearing and tearing length, can detect at an easy rate the wear condition of utensil 2, so that wear detector of the present invention is with respect to prior art, have simple in structurely, cost is low, the advantage that is easy to detect.
By it can also be seen that among Fig. 1, preferably, the device of these detection utensil wearing and tearing also comprises current detecting unit 4 and processing unit 5.Current detecting unit 4 is for example for being connected on the galvanometer in the level pressure loop, for detection of the strength of current of resistance unit 1.Processing unit 5 is connected with current detecting unit 4 signals, and calculates the wear extent of utensil 2 according to the strength of current that current detecting unit 4 detects.Particularly, the wear extent of utensil 2 can be by the wear extent of calculated resistance part 1 at first, and the wear extent by the wear extent calculating appliance 2 of resistance unit 1 draws again.Such as the wear tip of the left end of resistance unit 1 and utensil 2 is when original state is concordant, and the wear extent of resistance unit 1 equals the wear extent of utensil 2; If under original state, the left end of resistance unit 1 is arranged in the right side of utensil 2 wear tip 21 and the two is separated with predetermined distance d 1 (not shown this kind embodiment of Fig. 1), utensil 2 in predetermined distance d 1 scope at first weares and teares, then utensil 2 weares and teares synchronously with resistance unit 1, at this moment, the wear extent of utensil 2 wear extent that equals resistance unit 1 adds predetermined distance d 1.
Preferably, the xsect uniformity of the elongated and resistance unit 1 of resistance unit 1, for example resistance unit 1 cylindrical or cuboid.With reference to figure 3, the wear extent L of resistance unit 1
xCalculate in the following way: processing unit 5 comprises computing unit 51 further, and computing unit 51 is according to formula I
x* L=I * (L-L
x) calculate the wear extent L of resistance unit 1
xWherein, I is the initial current intensity of the resistance unit 1 that records, I under the level pressure loop
xBe the real-time current intensity of resistance unit, L is the initial length of resistance unit 1.Resistance value R=ρ * l because of resistance unit 1
l/ S, ρ are resistivity, and S is the sectional area in the cross section parallel with the direction of resistance unit length L among Fig. 1, l
lLength direction and the perpendicular direction of resistance unit length L, under the level pressure loop, the product of the resistance value of resistance 1 and real-time current intensity is definite value, i.e. I
x* ρ * l
l/ S
y=I * ρ * l
l/ S, wherein, S
yFor resistance unit 1 perpendicular to l
lThe real-time sectional area in the cross section of direction, S are that resistance unit 1 is perpendicular to l
lThe initial cross-section in the cross section of direction is long-pending, again because of resistance unit 1 xsect uniformity, so S
y/ S=(L-L
x)/L, and then draw I
x* L=I * (L-L
x).Computing unit 51 calculates the wear extent L of resistance unit 1
xAfter, namely can draw again the wearing and tearing length of utensil 2 in conjunction with resistance unit 1 and the position relationship of utensil 2, realize the abrasion condition of utensil 2 is carried out the function that stepless continuous detects.
Preferably, the device of this detection utensil wearing and tearing also comprises: display unit 6 is used for the wear extent of the utensil 2 that display processing unit 5 calculates, so that the wear condition of utensil 2 is analyzed and observed.Certainly, also display unit 6 can be set, when the wear extent that for example calculates utensil 2 when processing unit 5 has reached maximal value, can send braking instruction to the actuating unit of driving implement 2 by control module, directly stop the motion of utensil 2, realize the robotization control to utensil 2.
Preferably, with reference to figure 2, the device of these detection utensil wearing and tearing also comprises judging unit 7 and alarm unit 8, judging unit 7 is connected with current detecting unit 4 signals, judging unit 7 is used for judging that whether strength of current is less than predetermined value, when strength of current during less than predetermined value, send alerting signal by alarm unit 8.The definite of above-mentioned predetermined value can obtain by the following method: at first determine the greatest wear amount of utensil 2, then calculate the greatest wear amount of resistance unit 1, then according to I
x* L=I * (L-L
x) strength of current (above-mentioned predetermined value) when drawing corresponding resistance unit 1 greatest wear amount.Certainly, judging unit 7 can also be connected with processing unit signal and be connected, calculate the wear extent of utensil 2 when processing unit 5 after, judging unit is compared the wear extent of utensil 2 with maximum permission wear extent, if the wear extent of utensil 2 allows wear extent greater than maximum, then report to the police by alarm unit 8.
Come referring to Fig. 4 again, show the second preferred embodiment of the present invention, be with the difference of above-mentioned the first preferred embodiment, resistance unit 1 is three, is respectively resistance unit 11,12,13, three resistance units and arranges after wrong successively along the wear direction of utensil 2.Specifically in Fig. 4, take utensil 2 place sides as left, swivel adapter head 9 place sides are that the right side describes, the left end of resistance unit 11 is concordant with the wear tip of utensil 2, the left end of resistance unit 12 is concordant with the right-hand member of resistance unit 11, and the left end of resistance unit 13 is concordant with the right-hand member of resistance unit 12, makes each resistance unit corresponding to the different length section in the continuous length scope of utensil 2, the right-hand member of each resistance unit is connected with power supply by wire respectively, makes each resistance unit 1 be parallel to the level pressure loop.Easily understand, when resistance unit 11 wearing and tearing, the real-time wear extent of resistance unit 11 equals the real-time wear extent of utensil 2; When resistance unit 12 wearing and tearing, the real-time wear extent of resistance unit 12 adds that the length of resistance unit 11 equals the real-time wear extent of utensil 2; When resistance unit 13 wearing and tearing, the real-time wear extent of resistance unit 13 adds that the length of resistance unit 11 and resistance unit 12 equals the real-time wear extent of utensil 2.At utensil 2 mode that the successive range of 1 pair of utensil 2 of three resistance units is measured is set, each resistance unit is not easy fragmentation and can improves measuring accuracy.Easily understand, in actual applications, according to the length of utensil 2, can suitably set the number of resistance unit 1, and be not limited to the embodiment of three above-mentioned resistance units.
The present invention also provides a kind of shield machine, and this shield machine is provided with the device of above-mentioned detection utensil wearing and tearing.In conjunction with reference to figure 4, the utensil 2 among Fig. 4 can be the cutter of shield machine, also can be the cutterhead of mounting cutter.The Cutting tool installation manner of shield machine is on cutterhead, and cutterhead is installed on the swivel adapter head 9, and swivel adapter head 9 is with movable knife disc and tool motion under the driving of actuating unit, and being constructed in the stratum such as gravel, gravel, rock, cutter and cutterhead wear and tear simultaneously.By the device of above-mentioned detection utensil wearing and tearing is set at shield machine, namely be embedded resistance unit at cutter and/or cutterhead, the resistance unit respectively power supply in the wire by wearing swivel adapter head 9 and the operation room, current detecting unit etc. is connected, through finally demonstrate the real-time wearing and tearing of cutter and/or cutterhead after the processing unit processes by the guidance panel 61 in the operation room, can realize the function of in operation room continuous detecting cutter and/or cutterhead wearing and tearing, and rise simple in structure, easy for installation, easy to implement.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a device that detects the utensil wearing and tearing is characterized in that, comprising:
Resistance unit (1) is elongated, and the xsect uniformity of described resistance unit (1); Described resistance unit (1) is embedded in utensil to be detected (2) and can weares and teares synchronously with described utensil (2); Described resistance unit (1) connects power supply away from an end of the wear tip (21) of described utensil (2) by wire (3), forms the level pressure loop; The strength of current of described resistance unit (1) is corresponding one by one with the wear extent of described resistance unit (1), and the wear extent of described resistance unit (1) is corresponding one by one with the wear extent of described utensil (2).
2. device according to claim 1 is characterized in that, also comprises:
Current detecting unit (4) is for detection of the strength of current of described resistance unit (1);
Processing unit (5), the strength of current that detects according to described current detecting unit (4) calculates the wear extent of described utensil (2).
3. device according to claim 2 is characterized in that, also comprises: display unit (6), and for the wear extent that shows the described utensil (2) that described processing unit (5) calculates.
4. device according to claim 2, it is characterized in that, also comprise judging unit (7) and alarm unit (8), wherein, described judging unit (7) is used for judging that whether described strength of current is less than predetermined value, when described strength of current during less than described predetermined value, send alerting signal by described alarm unit (8).
5. each described device in 4 according to claim 1 is characterized in that,
Described processing unit (5) comprises computing unit (51), and described computing unit (51) is according to following formula I
x* L=I * (L-L
x) calculate the wear extent L of described resistance unit
x, wherein, I is the initial current intensity of the described resistance unit (1) that records, I under described level pressure loop
xBe the real-time current intensity of described resistance unit, L is the initial length of described resistance unit (1).
6. device according to claim 5 is characterized in that, described resistance unit (1) is concordant with the initial position of described utensil wear tip (21) near the initial position of an end of described utensil wear tip (21).
7. device according to claim 5 is characterized in that, described resistance unit (1) is a plurality of, and each described resistance unit (1) is parallel to the level pressure loop; Described a plurality of resistance unit (1) makes each described resistance unit corresponding to the different length section in the continuous length scope of described utensil (2) along the successively wrong rear setting of wear direction of described utensil (2).
8. device according to claim 1 is characterized in that, described utensil (2) is cutter or the cutterhead that is used for mounting cutter, and described resistance unit is embedded in described cutter or cutterhead.
9. device according to claim 8 is characterized in that, described cutter or cutterhead are cutter or the cutterhead of shield machine.
10. a shield machine is characterized in that, is provided with the device of each described detection utensil wearing and tearing in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110286990 CN102445143B (en) | 2011-09-24 | 2011-09-24 | Device for detecting wear of apparatus and shield machine provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110286990 CN102445143B (en) | 2011-09-24 | 2011-09-24 | Device for detecting wear of apparatus and shield machine provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102445143A CN102445143A (en) | 2012-05-09 |
| CN102445143B true CN102445143B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110286990 Expired - Fee Related CN102445143B (en) | 2011-09-24 | 2011-09-24 | Device for detecting wear of apparatus and shield machine provided with same |
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| CN (1) | CN102445143B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466321B (en) * | 2015-12-31 | 2018-05-04 | 中国铁建重工集团有限公司 | A kind of abrasion of cutting tool detection method |
| CN105466327B (en) * | 2015-12-31 | 2018-07-06 | 中国铁建重工集团有限公司 | For the sensor and device, tooling system of shield machine cutter abrasion detection |
| CN105486216B (en) * | 2015-12-31 | 2018-07-10 | 中国铁建重工集团有限公司 | A kind of shield machine cutter abrasion detection device and shield machine cutter system |
| CN109115098A (en) * | 2017-06-23 | 2019-01-01 | 英业达科技有限公司 | To detect the detection element of brake block abrasion loss |
| CN110356945B (en) * | 2018-03-26 | 2021-03-16 | 上海三菱电梯有限公司 | Wear detection device for linear motion assembly and elevator brake device |
| CN109000551A (en) * | 2018-06-23 | 2018-12-14 | 中铁九局集团第四工程有限公司 | It is embedded in the synchronous abrasion distance measuring sensor of resistance-type and its application |
| DE102019007838A1 (en) * | 2019-03-11 | 2020-09-17 | Mitsubishi Heavy Industries, Ltd. | WEAR SENSOR, WEAR SENSOR DEVICE, STORAGE, AND METHOD OF ADJUSTING STORAGE |
| CN110095286B (en) * | 2019-04-18 | 2021-01-05 | 杭州电子科技大学 | Testing device for friction pair of ball-and-socket joint of robot |
| CN110986748B (en) * | 2019-12-30 | 2021-04-06 | 中铁隧道局集团有限公司 | Monitoring device for monitoring backward movement of cutter rest of shield hob |
| CN113464655A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Shield machine and main drive seal and method capable of detecting abrasion loss on line |
| CN115013320B (en) * | 2022-06-20 | 2023-07-21 | 广东鹏洋应急科技有限公司 | Automatic regulating high pressure water pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3247628B2 (en) * | 1997-02-07 | 2002-01-21 | 飛島建設株式会社 | Detector for cutter bit wear of shield machine |
| JP2004143693A (en) * | 2002-10-22 | 2004-05-20 | Shimizu Corp | Tail seal of shield machine and its wear and tear detection method |
| JP3858196B2 (en) * | 2002-11-26 | 2006-12-13 | 飛島建設株式会社 | Cutter wear detection sensor and detection device for shield machine |
| JP2005299287A (en) * | 2004-04-14 | 2005-10-27 | Taisei Corp | Damage detector |
| JP2008223311A (en) * | 2007-03-12 | 2008-09-25 | Ihi Corp | Abrasion detection device of cutter bit |
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