CN110006384A - A kind of cutter head of shield machine abrasion On-line Measuring Method - Google Patents
A kind of cutter head of shield machine abrasion On-line Measuring Method Download PDFInfo
- Publication number
- CN110006384A CN110006384A CN201910314471.2A CN201910314471A CN110006384A CN 110006384 A CN110006384 A CN 110006384A CN 201910314471 A CN201910314471 A CN 201910314471A CN 110006384 A CN110006384 A CN 110006384A
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- China
- Prior art keywords
- cutterhead
- telescopic rod
- pressure
- hydraulic cylinder
- foam hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention provides a kind of cutter head of shield machine to wear On-line Measuring Method, utilize the foam hole on existing cutter head of shield machine, pass through hydraulic cylinder, pressure sensor, displacement sensor, on-line measurement may be implemented, reduction personnel, which pressurize, to construct, measuring device is simple, and the convenient abrasion loss for grasping cutter at any time avoids delay the duration.
Description
Technical field
The invention belongs to a kind of cutterhead wear measuring method, more specifically to a kind of cutter head of shield machine abrasion is online to be surveyed
Amount method.
Background technique
With shield machine being widely used at home, the length of tunnel of single driving is constantly extending in addition, tool wear
Have become the critical issue for influencing construction quality and progress.Important component of the cutterhead as shield machine, periodically checks
With maintenance, accurate grasp cutter service condition, have great significance.And earth pressure balanced shield, EPBS method is as common shield side at present
Formula, in order to detect the abrasion condition of knife disc tool, in this case, cutterhead inspection and tool maintenance be under an increased pressure into
Capable, band press operation is generally required, this process is extremely troublesome and dangerous, and by the way of no press operation, process
It is often troublesome, it can devote a tremendous amount of time, delay the duration.
In order to avoid the trouble of above-mentioned artificial detection, currently, carrying out the mode master of real-time monitoring to the wear condition of cutter
It include: 1) fluid pressure type, when tool wear is extremely prescribed a time limit, hydraulic fluid leak, PLC automatic alarm；2) electromagnetic type, tool wear is extremely
When the limit, probe contacts in cutter are embedded in stratum, and electromagnetic circuit disconnects, and receiver does not receive electromagnetic signal, alarms
Device starting；3) ultrasonic type carries out real-time monitoring to the abrasion loss of cutter, can grasp the wear condition of cutter at any time.At that time, by
Very severe in the working environment of shield machine, above-mentioned detection can be spent a large amount of again once failing by the way of artificial detection
Time, schedule delays.
Summary of the invention
The present invention provides a kind of cutter head of shield machine abrasion on-line measurement side to overcome the deficiencies in the prior art
Method, this method can wear cutterhead in the way of mechanical carries out periodic detection, implements the abrasion condition for grasping cutterhead.
The present invention provides a kind of cutter head of shield machine to wear On-line Measuring Method, comprising the following steps:
A, installation cutterhead wears on-line measurement device, and cutterhead abrasion on-line measurement device includes hydraulic cylinder and oil pump, and oil pump is used
In providing hydraulic oil to hydraulic cylinder, hydraulic cylinder includes shell and telescopic rod, and the rear end of shell is provided with displacement sensing
Device is provided with flange in the front end of shell, pressure sensor is provided on oil pump, wherein pressure sensor is for detecting
The pressure of the hydraulic oil of oil pump output, displacement sensor are used to detect the displacement of telescopic rod；Cutterhead wears on-line measurement device also
Including display device (not shown), display device is for showing that pressure sensor and displacement sensor detect real-time number
According in the initial state, i.e., in the state that telescopic rod does not extend out, the end of telescopic rod and the outside of flange are concordant, show at this time
Device shows that the numerical value of displacement sensor is 0；
B, the preparation of on-line measurement is evenly equipped with several foam holes on cutterhead, remote in cutterhead when shield machine stops working
The side of excavator body is left, the thickness L1 of cutterhead at foam hole is measured, cutterhead abrasion on-line measurement device is put perpendicular to cutterhead
It sets, telescopic rod is directed at foam hole, the flange of the measuring device is abutted to the inside of foam hole, position as shown in Figure 2；
C, on-line measurement, starting hydraulic cylinder stretch out telescopic rod along the direction of foam hole, and record pressure sensor inspection in real time
The pressure measured, before telescopic rod touches and excavates the soil body, the pressure value that pressure sensor detects is that fluctuation is lesser big
The pressure for causing constant pressure or smooth change, when telescopic rod, which touches, excavates the soil body, pressure that pressure sensor detects
Value can generate violent variation, and the numerical value for recording displacement sensor at this time is denoted as L2, then the cutter length of cutterhead is L=L2-
L1;
D, it obtains the abrasion loss of cutterhead, repeats step B-C, measure the cutter length of corresponding cutterhead at multiple foam holes, acquire
Average value, the as length of cutter at this time, compare the initial length of cutter, the abrasion loss of you can get it cutterhead at this time.
Preferably, the diameter of telescopic rod is less than the diameter of foam hole.
Preferably, in step C, the stretching speed of oil cylinder is controlled, so that hydraulic cylinder touches spoil from starting to
The time of body is 3-5 minutes, consequently facilitating pressure sensor can generate pressure change.
Preferably, in step D, even number foam hole to be chosen to measure, even number foam hole is uniformly distributed along circumferential direction,
It by the measurement result of even number foam hole, averages, improves the accuracy of testing result.
Preferably, on the pipeline of oil pump to hydraulic cylinder, it is also in series with check valve, prevents oil liquid from flowing backwards, is arrived in oil pump
On the pipeline of hydraulic cylinder, it is also parallel with safety valve, protects hydraulic system.
Beneficial effects of the present invention are as follows:
1. the present invention is using the foam hole on existing cutter head of shield machine, by hydraulic cylinder, pressure sensor, displacement sensor,
On-line measurement may be implemented, reduce personnel's pressurization construction, measuring device is simple, and the convenient abrasion loss for grasping cutter at any time avoids
Schedule delays.
2. the present invention detects pressure change using pressure sensor, by the pressure change of pressure sensor, displacement is realized
Measurement, it is easy to detect, and by the stretching speed of control oil cylinder, so that hydraulic cylinder excavates the soil body from starting to touch
Time is 3-5 minutes, guarantees that time enough enables and generates pressure change convenient for pressure sensor, guarantees measurement result
Accuracy.
3. choosing even number foam hole to measure, even number foam hole is uniformly distributed along circumferential direction, passes through even number foam
The measurement result in hole, averages, and improves the accuracy of testing result.
4. the front end of the shell of hydraulic cylinder of the invention is provided with flange, positioned, is protected when oil cylinder being facilitated to test
Demonstrate,prove measurement accuracy.
Detailed description of the invention
Fig. 1 is the front view of cutter head structure schematic diagram of the invention.
Fig. 2A is the side view of cutter head structure schematic diagram of the present invention；
Fig. 2 B is the partial enlarged view at the side view foam hole of cutter head structure schematic diagram of the present invention.
Appended drawing reference in figure is respectively as follows: 1- foam hole, 2- telescopic rod, 3- flange, 6- shell, 7- cutterhead.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
With reference to attached drawing 1, the schematic diagram of the cutterhead shown is evenly equipped with several to improve the performance of spoil on cutterhead 7
A foam hole 1, foam hole is specifically arranged as 6 in the present embodiment, and the dual-pilot cutter on cutterhead is also uniformly dispersed in the periphery of cutterhead.
The present invention provides a kind of cutter head of shield machine to wear On-line Measuring Method, comprising the following steps:
A, installation cutterhead wears on-line measurement device, and cutterhead abrasion on-line measurement device includes hydraulic cylinder and oil pump, and oil pump is used
In providing hydraulic oil to hydraulic cylinder, hydraulic cylinder includes shell 6 and telescopic rod 2, and the rear end of shell is provided with displacement and passes
Sensor is provided with flange in the front end of shell, pressure sensor is provided on oil pump, wherein pressure sensor is for examining
The pressure of the hydraulic oil of oil pump output is surveyed, displacement sensor is used to detect the displacement of telescopic rod；Cutterhead wears on-line measurement device
It further include display device (not shown), display device is for showing that pressure sensor and displacement sensor detect real-time number
According in the initial state, i.e., in the state that telescopic rod does not extend out, the end of telescopic rod and the outside of flange are concordant, show at this time
Device shows that the numerical value of displacement sensor is 0；
B, the preparation of on-line measurement is evenly equipped with several foam holes on cutterhead, remote in cutterhead when shield machine stops working
The side of excavator body is left, the thickness L1 of cutterhead at foam hole is measured, cutterhead abrasion on-line measurement device is put perpendicular to cutterhead
It sets, telescopic rod is directed at foam hole, the flange of the measuring device is abutted to the inside of foam hole, position as shown in Figure 2；
C, on-line measurement, starting hydraulic cylinder stretch out telescopic rod along the direction of foam hole, and record pressure sensor inspection in real time
The pressure measured, before telescopic rod touches and excavates the soil body, the pressure value that pressure sensor detects is that fluctuation is lesser big
The pressure for causing constant pressure or smooth change, when telescopic rod, which touches, excavates the soil body, pressure that pressure sensor detects
Value can generate violent variation, and the numerical value for recording displacement sensor at this time is denoted as L2, then the cutter length of cutterhead is L=L2-
L1;
D, it obtains the abrasion loss of cutterhead, repeats step B-C, measure the cutter length of corresponding cutterhead at multiple foam holes, acquire
Average value, the as length of cutter at this time, compare the initial length of cutter, the abrasion loss of you can get it cutterhead at this time.
Wherein, the diameter of telescopic rod is less than the diameter of foam hole.
Moreover, control the stretching speed of oil cylinder in step C, so that hydraulic cylinder touches the excavation soil body from starting to
Time be 3-5 minutes, consequently facilitating pressure sensor can generate pressure change.
In step D, it is preferable that it chooses two foam holes and measures, two foam holes are spaced 180 ° along circumferential direction,
It by the measurement result of two foam holes, averages, improves the accuracy of testing result.
In addition, being also in series with check valve on the pipeline of oil pump to hydraulic cylinder, prevent oil liquid from flowing backwards, in oil pump to liquid
On the pipeline of compressing cylinder, it is also parallel with safety valve, protects hydraulic system.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of cutter head of shield machine wears On-line Measuring Method, comprising the following steps:
A, installation cutterhead wears on-line measurement device, and cutterhead abrasion on-line measurement device includes hydraulic cylinder and oil pump, and oil pump is used
In providing hydraulic oil to hydraulic cylinder, hydraulic cylinder includes shell and telescopic rod, and the rear end of shell is provided with displacement sensing
Device is provided with flange in the front end of shell, pressure sensor is provided on oil pump, wherein pressure sensor is for detecting
The pressure of the hydraulic oil of oil pump output, displacement sensor are used to detect the displacement of telescopic rod；Cutterhead wears on-line measurement device also
Including display device, display device is for showing that pressure sensor and displacement sensor detect real time data, in original state
Under, i.e., in the state that telescopic rod does not extend out, the end of telescopic rod and the outside of flange are concordant, and the displacement of display device display at this time passes
The numerical value of sensor is 0；
B, the preparation of on-line measurement is evenly equipped with several foam holes on cutterhead, remote in cutterhead when shield machine stops working
The side of excavator body is left, the thickness L1 of cutterhead at foam hole is measured, cutterhead abrasion on-line measurement device is put perpendicular to cutterhead
It sets, telescopic rod is directed at foam hole, the flange of the measuring device is abutted to the inside of foam hole, position as shown in Figure 2；
C, on-line measurement, starting hydraulic cylinder stretch out telescopic rod along the direction of foam hole, and record pressure sensor inspection in real time
The pressure measured, before telescopic rod touches and excavates the soil body, the pressure value that pressure sensor detects is that fluctuation is lesser big
The pressure for causing constant pressure or smooth change, when telescopic rod, which touches, excavates the soil body, pressure that pressure sensor detects
Value can generate violent variation, and the numerical value for recording displacement sensor at this time is denoted as L2, then the cutter length of cutterhead is L=L2-
L1;
D, it obtains the abrasion loss of cutterhead, repeats step B-C, measure the cutter length of corresponding cutterhead at multiple foam holes, acquire
Average value, the as length of cutter at this time, compare the initial length of cutter, the abrasion loss of you can get it cutterhead at this time.
2. according to the method described in claim 1, the diameter of boom is less than the diameter of foam hole.
3. according to the method described in claim 1, control the stretching speed of oil cylinder in step C, so that hydraulic cylinder is from starting
It is 3-5 minutes to the time for excavating the soil body is touched.
4. according to the method described in claim 1, in step D, selection even number foam hole measures, even number foam hole
It is uniformly distributed along circumferential direction, by the measurement result of even number foam hole, average.
5. according to the method described in claim 1, check valve is also in series on the pipeline of oil pump to hydraulic cylinder, in oil pump
Onto the pipeline of hydraulic cylinder, it is also parallel with safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314471.2A CN110006384B (en) | 2019-04-18 | 2019-04-18 | Shield tunneling machine cutter head abrasion online measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314471.2A CN110006384B (en) | 2019-04-18 | 2019-04-18 | Shield tunneling machine cutter head abrasion online measurement method |
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| Publication Number | Publication Date |
|---|---|
| CN110006384A true CN110006384A (en) | 2019-07-12 |
| CN110006384B CN110006384B (en) | 2020-09-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220107A (en) * | 2020-02-27 | 2020-06-02 | 江苏大学 | Automatic detection device, system and detection method for automobile parts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220107A (en) * | 2020-02-27 | 2020-06-02 | 江苏大学 | Automatic detection device, system and detection method for automobile parts |
| CN111220107B (en) * | 2020-02-27 | 2021-07-20 | 江苏大学 | Automatic detection device, system and detection method for automobile parts |
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| Publication number | Publication date |
|---|---|
| CN110006384B (en) | 2020-09-11 |
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