CN111009103A - Monitoring and alarming system and method for monitoring cutter head fracture condition in cutter drum on line - Google Patents
Monitoring and alarming system and method for monitoring cutter head fracture condition in cutter drum on line Download PDFInfo
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- CN111009103A CN111009103A CN201911215908.3A CN201911215908A CN111009103A CN 111009103 A CN111009103 A CN 111009103A CN 201911215908 A CN201911215908 A CN 201911215908A CN 111009103 A CN111009103 A CN 111009103A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005291 magnetic effect Effects 0.000 claims abstract description 126
- 230000006698 induction Effects 0.000 claims abstract description 81
- 230000008859 change Effects 0.000 claims abstract description 13
- 239000000696 magnetic material Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 6
- 239000003302 ferromagnetic material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/0957—Detection of tool breakage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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Abstract
The invention provides a monitoring and alarming system and method for monitoring the fracture condition of a cutter head in a cutter drum on line. The monitoring and alarming method for monitoring the breakage condition of the cutter head in the cutter drum on line is characterized in that in the first step, the cutter head is made of magnetic materials; step two, mounting the magnetic tool bit obtained in the step one on a cutter drum; step three, arranging a housing outside the cutter drum, arranging a magnetic induction type proximity switch on the housing, and acquiring the change condition of the magnetic field; and step four, judging whether the cutter head fracture condition exists or not according to the magnetic field change condition, and step five, alarming and reminding when the cutter head fracture condition is judged to exist. The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line enables a user to know the cutter head damage condition at the first time and replace the cutter head in time.
Description
Technical Field
The invention relates to the field of machinery, in particular to a monitoring and alarming system and method for monitoring the fracture condition of a cutter head in a cutter drum on line.
Background
The cutter drum is an important part in heavy machinery such as milling equipment, crushing equipment, cutting equipment and the like, and milling, crushing and cutting work is realized through the cutter drum. During operation, the situation that the cutter head is broken can occur, and the cutter head needs to be replaced in time. However, the current processing method is as follows: after the mechanical equipment works, the condition of breakage and damage of the cutter head is observed manually. This approach does not allow for the detection of a broken bit during operation, which would have a serious adverse effect on subsequent operations if it were not detected at the first time. Moreover, the cutter heads on the cutter drum need to be checked one by one, and the manual maintenance mode is time-consuming and labor-consuming.
Disclosure of Invention
The present invention is made to solve the above problems, and an object of the present invention is to provide a monitoring and alarming system and method for online monitoring of a cutter head fracture condition in a cutter drum.
The invention provides a monitoring and alarming method for monitoring the fracture condition of a cutter head in a cutter drum on line, which is characterized by comprising the following steps: step one, manufacturing a cutter head by adopting a magnetic material; step two, mounting the magnetic tool bit obtained in the step one on a cutter drum; step three, arranging a housing outside the cutter drum, arranging a magnetic induction type proximity switch on the housing, and acquiring the change condition of the magnetic field; and step four, judging whether the cutter head fracture condition exists or not according to the magnetic field change condition, and step five, alarming and reminding when the cutter head fracture condition is judged to exist.
The invention also provides a monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, which is characterized in that: the cutter drum device comprises a rotary drum, a plurality of cutter head mounting discs and a plurality of magnetic cutter heads, wherein the cutter head mounting discs are axially fixed on the periphery of the rotary drum; the housing is arranged on the outer side of the cutter drum device; the magnetic induction type proximity switches are fixedly arranged on the housing along the axial direction of the rotary drum, are distributed in a one-to-one correspondence manner with the tool bit mounting disc, and are used for sensing the approaching condition of the magnetic tool bit on the corresponding tool bit mounting disc and outputting corresponding magnetic induction signals; the memory stores the corresponding relation between the magnetic induction type proximity switch and the tool bit mounting disc; the signal conversion module is connected with the magnetic induction type proximity switch, comprises an analog-to-digital converter and a concentrator and is used for performing analog-to-digital conversion and regeneration, shaping and amplification on the magnetic induction signals; the central processing module is connected with the memory and the signal conversion module and is used for analyzing and processing the converted signals and generating corresponding alarm signals and display signals according to the corresponding relation between the magnetic induction type proximity switches and the tool bit mounting disc; the display is in data connection with the central processing module and displays the fracture condition of the cutter head according to a display signal output by the central processing module; and the alarm is in data connection with the central processing module and is used for alarming and reminding the fracture condition of the cutter head according to an alarm signal output by the central processing module.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: the plurality of tool bits installed on each tool bit installation disc are distributed at equal intervals in the circumferential direction, and magnetic induction signals output by the magnetic induction type proximity switches are pulse signals.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: when the number of pulse signals output by the same magnetic induction type proximity switch in preset time is changed, the situation that a tool bit is broken exists on a tool bit mounting disc corresponding to the magnetic induction type proximity switch is judged, and the central processing module generates corresponding alarm signals and display signals according to the corresponding relation between the magnetic induction type proximity switch and the tool bit mounting disc.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: the data connection form of the alarm and the central processing module is connection through a signal transmission line or wireless connection; the data connection form of the display and the central processing module is connection through a signal transmission line or wireless connection.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: wherein, the magnetic tool bit is made of ferromagnetic materials or permanent magnetic materials.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: wherein, the magnetic cutter head is in a bullet shape.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: wherein, the included angle formed by each magnetic induction type proximity switch and the housing is equal.
The monitoring and alarming system for monitoring the cutter head fracture condition in the cutter drum on line, provided by the invention, is also characterized in that: when the magnetic tool bit rotates to the position closest to the corresponding magnetic induction type proximity switch, the closest distance between the magnetic tool bit and the inner surface of the housing is 1-20 mm, and the closest distance is larger than the length of the exposed part of the magnetic induction type proximity switch exposed in the housing.
The invention has the following functions and effects:
in the monitoring alarm system for monitoring the cutter head fracture condition in the cutter drum on line, when the cutter head fracture condition occurs on the cutter head mounting disc, the number of pulse signals output by the corresponding magnetic induction type proximity switches is changed, the pulse signals are analyzed and processed by the central processing module, corresponding alarm signals and display signals are produced according to the corresponding relation between the magnetic induction type proximity switches and the cutter head mounting disc, the cutter head fracture condition is reminded by the alarm, and the cutter head fracture condition is displayed by the display, so that a user can know that the cutter head is damaged at the first time, and the cutter head fracture condition can be quickly positioned on which cutter head mounting disc exists particularly due to the corresponding relation between the magnetic induction type proximity switches and the cutter head mounting disc, thereby avoiding the time-consuming and labor-consuming conditions that one cutter head mounting disc and one cutter head are required to be observed one by one person one by one time, by adopting the monitoring and alarming system for monitoring the breakage condition of the cutter head in the cutter drum on line, when the damaged cutter head mounting disc is quickly positioned, a few cutter heads on the cutter head mounting disc are manually checked, so that the system is more trouble-saving and labor-saving, and the damaged cutter head is convenient to replace at the first time.
Drawings
FIG. 1 is a block diagram of a monitoring alarm system for online monitoring of tool bit breakage in a tool drum according to an embodiment of the present invention;
FIG. 2 is a schematic view (one) of the installation of the knife drum device, the housing and the magnetic induction type proximity switch in the embodiment of the invention;
FIG. 3 is a schematic view (two) illustrating the installation of the knife drum device, the housing, and the magnetic induction proximity switch according to the embodiment of the present invention;
fig. 4 is a schematic view of a magnetic tool tip according to an embodiment of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments specifically describe the monitoring and alarming system and method for monitoring the cutter head fracture condition in the cutter drum on line according to the present invention with reference to the accompanying drawings.
< example >
The embodiment provides a monitoring and alarming method for monitoring the cutter head fracture condition in a cutter drum on line, which is carried out according to the following steps.
Step one, manufacturing a cutter head by adopting a magnetic material;
step two, mounting the magnetic tool bit obtained in the step one on a cutter drum;
and step three, arranging a housing outside the cutter drum, arranging a magnetic induction type proximity switch on the housing, and acquiring the change condition of the magnetic field.
And step four, judging whether the cutter head is broken or not according to the change condition of the magnetic field. The magnetic tool bit is close to the magnetic induction type proximity switch, a magnetic field generated by the magnetic induction type proximity switch is changed, when the magnetic induction type proximity switch generates a magnetic field change condition, a changed magnetic induction signal is generated, and the condition that the magnetic tool bit is close to the magnetic induction type proximity switch can be obtained by obtaining the change condition of the magnetic induction signal output by the magnetic induction type proximity switch.
And step five, when the cutter head is judged to be broken, alarming and reminding are carried out.
The embodiment also provides a monitoring and alarming system 100 for monitoring the cutter head fracture condition in the cutter drum on line, and the monitoring and alarming method is realized.
As shown in FIGS. 1 to 3, the monitoring and alarming system 100 for online monitoring of the cutter head fracture condition in the cutter drum comprises: the device comprises a knife drum device, a cover 4, a magnetic induction type proximity switch 5, a signal conversion module 6, a central processing module 7, a memory 8, a display 9 and an alarm 10.
The cutter drum device comprises a rotary drum 1, the rotary drum 1 is driven by a power system to rotate, m cutter head installation discs 2 are axially fixed to the periphery of the rotary drum 1, and n magnetic cutter heads are fixedly installed on each installation cutter disc 2. The n cutter heads mounted on each cutter head mounting disk 2 are circumferentially equidistantly distributed. The magnetic tool bit 5 can be made of ferromagnetic material such as iron, cobalt, tweezers, etc. which need to be applied with external magnetic field to generate magnetism, or permanent magnetic material which is magnetic by itself. When the magnetic tool bit 5 made of the ferromagnetic material or the permanent magnetic material approaches the magnetic induction type proximity switch 5, the magnetic field generated by the magnetic induction type proximity switch 5 changes, which is expressed as that the magnetic induction signal output by the magnetic induction type proximity switch 5 changes. Preferably, the magnetic tool bit 5 is made of any ferromagnetic material such as iron, cobalt, tweezers, etc. And the magnetic bit 5 is provided in a bullet head shape as shown in fig. 4.
The housing 4 is arranged on the outer side of the cutter drum device, and the housing 4 is made of steel. m magnetic induction formula proximity switch 5 fixes on housing 4, arranges along the axial direction of rotary drum 1 to m magnetic induction formula proximity switch 5 and m tool bit mounting disc 2 position one-to-one. As shown in fig. 2, the magnetic induction type proximity switch 5 is embedded in the housing 4, and the sensing end of the magnetic induction type proximity switch 5 penetrates through the inner surface of the housing to be exposed to the inside of the housing 4, so as to better sense whether the magnetic tool bit 5 is approaching. The included angle formed by each magnetic induction type proximity switch 5 and the housing 4 is equal in angle, so that the induction effect of each magnetic induction type proximity switch 5 is consistent, no difference is generated, in the embodiment, the included angle formed by each magnetic induction type proximity switch 5 and the housing 4 is vertically arranged at 90 degrees, but the included angle is not limited by the included angle, and the included angle can be set according to actual requirements in the embodiment. When the magnetic tool bit 3 rotates to the position closest to the corresponding magnetic induction type proximity switch 5, the closest distance between the magnetic tool bit 3 and the inner surface of the housing 4 is 1 mm-20 mm, so that the magnetic induction effect of the magnetic induction type proximity switch 5 is ensured to be good. And the closest distance is set to be greater than the length of the exposed portion of the magnetic induction proximity switch 5 exposed to the interior of the housing 4, which ensures that the tool bit does not touch the magnetic induction proximity switch 5.
As shown in fig. 1, a hollow arrow 11 in the figure indicates that when the magnetic tool bit 5 rotates with the drum 1 to approach the magnetic induction type proximity switch 5, the magnetic field of the magnetic induction type proximity switch 5 changes, and the magnetic induction type proximity switch 5 outputs a corresponding magnetic induction signal. Because the adjacent magnetic tool bits 3 on each tool bit mounting disc 2 are directly spaced and not continuous, the magnetic induction type proximity switches 5 sense the magnetic field change condition of the corresponding tool bit mounting disc 2 and then output pulse signals. Since the n magnetic tips 3 mounted on each of the tip mounting plates 2 are circumferentially equidistantly distributed, the intervals between the fixed pulse signals are the same, and the number of pulse signals output from the same magnetic induction type proximity switch 5 is also constant within the predetermined time t seconds. For example, when the rotating drum rotates at r revolutions per second, since each tool bit mounting plate 2 is provided with n magnetic tool bits 3, the number of pulse signals output by the magnetic induction type proximity switch 5 in the predetermined time t seconds should be: r × t × n. Under the condition that the cutter head is not broken, the number of the pulse signals is kept unchanged within preset time t seconds; when the magnetic tool bit 3 is broken on the tool bit mounting disc 2, the number of the pulse signals in the preset time t seconds changes, so that whether the tool bit breaking condition exists on the tool bit mounting disc 2 corresponding to the magnetic induction type proximity switch 5 can be judged according to the change condition of the number of the pulse signals output by the same magnetic induction type proximity switch 5 in the preset time.
The memory 8 stores the correspondence between the magnetic induction type proximity switch 5 and the tool bit mounting plate 2.
The signal conversion module 6 is connected with the magnetic induction type proximity switch, the signal conversion module 6 comprises an analog-digital converter and a concentrator, the analog-digital converter is used for converting magnetic induction signals into digital signals through electric signals, loss exists in signal transmission, and attenuated signals can be shaped, amplified and sent out through the concentrator. The digital signal which is processed by the signal conversion module 6 has high quality and is convenient to analyze.
The central processing module 7 can be any computer system with data processing capability, such as an upper computer, a single chip microcomputer and the like. The central processing module 7 is connected to the memory 7 and the signal conversion module 6, and is configured to analyze and process the converted signal. When the number of pulse signals output by the same magnetic induction type proximity switch in preset time is changed, the situation that a tool bit is broken exists on the tool bit mounting disc 2 corresponding to the magnetic induction type proximity switch 5 is judged, and the central processing module 7 generates corresponding alarm signals and display signals according to the corresponding relation between the magnetic induction type proximity switch 5 and the tool bit mounting disc 2.
The alarm 10 is in data connection with the central processing module 7 and alarms and reminds the breakage condition of the cutter head according to an alarm signal output by the central processing module. The display 9 is in data connection with the central processing module 7, and displays which specific tool bit mounting disc 2 has a tool bit fracture situation according to the corresponding relation between the magnetic induction type proximity switch 5 and the tool bit mounting disc 2 according to the display signal output by the central processing module 7. The data connection form of the alarm 10 and the display 9 and the central processing module 7 can adopt connection through signal transmission lines or wireless connection according to actual conditions.
When the cutter head fracture condition appears in the tool drum under operating condition, the user can know that the cutter head is damaged through the display 9 and the alarm 10 for the first time, and can quickly locate which cutter head mounting disc 2 the cutter head fracture condition appears through the display 9. The time-consuming and labor-consuming situation that the m multiplied by n cutter heads on the whole cutter drum are observed and checked one by manual observation in the prior art is avoided. The monitoring alarm system of the cutter head fracture condition in the line monitoring cutter drum of this embodiment can directly fix a position concrete cutter head mounting disc 2 to only need examine a few n cutter heads on corresponding cutter head mounting disc 2, can know the cutter head fracture condition in the very first time like this, and can find the fracture cutter head in the very short time fast and change, thereby guaranteed that follow-up work of cutter drum goes on smoothly.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A monitoring and alarming method for monitoring the cutter head fracture condition in a cutter drum on line is characterized by comprising the following steps:
step one, manufacturing a cutter head by adopting a magnetic material;
step two, mounting the magnetic tool bit obtained in the step one on a cutter drum;
step three, arranging a housing outside the cutter drum, arranging a magnetic induction type proximity switch on the housing, and acquiring the change condition of the magnetic field;
step four, judging whether the cutter head fracture condition exists or not according to the magnetic field change condition,
and step five, when the cutter head is judged to be broken, alarming and reminding are carried out.
2. The utility model provides a monitoring alarm system of cutter head fracture condition in on-line monitoring sword drum which characterized in that:
the cutter drum device comprises a rotary drum, a plurality of cutter head mounting discs and a plurality of magnetic cutter heads, wherein the cutter head mounting discs are axially fixed on the periphery of the rotary drum;
the housing is arranged on the outer side of the cutter drum device;
the magnetic induction type proximity switches are fixedly arranged on the housing along the axial direction of the rotary drum, are distributed in a one-to-one correspondence manner with the tool bit mounting disc, and are used for sensing the approaching condition of the magnetic tool bit on the corresponding tool bit mounting disc and outputting corresponding magnetic induction signals;
the memory stores the corresponding relation between the magnetic induction type proximity switch and the tool bit mounting disc;
the signal conversion module is connected with the magnetic induction type proximity switch, comprises an analog-to-digital converter and a concentrator and is used for performing analog-to-digital conversion and regeneration, shaping and amplification on the magnetic induction signals;
the central processing module is connected with the memory and the signal conversion module and is used for analyzing and processing the converted signals and generating corresponding alarm signals and display signals according to the corresponding relation between the magnetic induction type proximity switches and the tool bit mounting disc;
the display is in data connection with the central processing module and displays the fracture condition of the cutter head according to the display signal output by the central processing module;
and the alarm is in data connection with the central processing module and is used for alarming and reminding the fracture condition of the cutter head according to the alarm signal output by the central processing module.
3. The monitoring and alarming method for the on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 2, wherein:
wherein a plurality of cutter heads arranged on each cutter head mounting disc are distributed at equal intervals along the circumferential direction,
the magnetic induction type proximity switch outputs the magnetic induction signal which is a pulse signal.
4. The monitoring and alarming method for the on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 3, wherein:
wherein when the number of the pulse signals output by the same magnetic induction type proximity switch in a preset time is changed, the situation that the cutter head is broken exists on the cutter head mounting disc corresponding to the magnetic induction type proximity switch is judged,
and the central processing module generates corresponding alarm signals and display signals according to the corresponding relation between the magnetic induction type proximity switches and the tool bit mounting disc.
5. The monitoring and alarming system for on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 2, wherein:
the data connection form of the alarm and the central processing module is connection through a signal transmission line or wireless connection;
the data connection form of the display and the central processing module is connection through a signal transmission line or wireless connection.
6. The monitoring and alarming method for the on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 2, wherein:
wherein, the magnetic tool bit is made of ferromagnetic materials or permanent magnetic materials.
7. The monitoring and alarming method for the on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 2, wherein:
wherein, the magnetic cutter head is in a bullet shape.
8. The monitoring and alarming method for the on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 2, wherein:
and the included angle formed by each magnetic induction type proximity switch and the housing is equal in angle.
9. The monitoring and alarming method for the on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 2, wherein:
the magnetic induction type proximity switch is embedded on the cover shell, and an induction end of the magnetic induction type proximity switch penetrates through the inner surface of the cover shell and is exposed in the cover shell.
10. The monitoring and alarming method for on-line monitoring of the cutter head fracture condition in the cutter drum as claimed in claim 9, wherein:
when the magnetic tool bit rotates to a position closest to the corresponding magnetic induction type proximity switch, the closest distance between the magnetic tool bit and the inner surface of the housing is 1-20 mm, and the closest distance is larger than the length of an exposed part of the magnetic induction type proximity switch exposed in the housing.
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| CN201911215908.3A CN111009103B (en) | 2019-12-02 | 2019-12-02 | Monitoring and alarming system and method for monitoring cutter head fracture condition in cutter drum on line |
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| CN201911215908.3A CN111009103B (en) | 2019-12-02 | 2019-12-02 | Monitoring and alarming system and method for monitoring cutter head fracture condition in cutter drum on line |
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| CN104764800A (en) * | 2015-04-20 | 2015-07-08 | 武汉华宇一目检测装备有限公司 | Residual magnetism flaw detection method and device for piston rings based on series-connection closed type magnetization |
| CN205027699U (en) * | 2015-10-10 | 2016-02-10 | 江苏弗莱迪斯汽车系统有限公司 | Detect automatic early warning device of ferromagnetic material crackle |
| CN105234746A (en) * | 2015-11-25 | 2016-01-13 | 苏州多荣自动化科技有限公司 | Online tool wear monitoring system and detection method thereof |
| US20190330983A1 (en) * | 2016-04-01 | 2019-10-31 | Phillip Sollami | Bit Retainer |
| CN105973896A (en) * | 2016-05-27 | 2016-09-28 | 武汉理工大学 | Shield tunneling machine cutter and cutter head wearing online detection device and method based on optical fiber sensing |
| CN206154005U (en) * | 2016-11-18 | 2017-05-10 | 上海西码机床科技股份有限公司 | Cutter breakage detection device |
| CN108561145A (en) * | 2018-07-04 | 2018-09-21 | 德阳兴民机械厂 | A kind of cutter head of shield machine of variable-diameter |
| CN108972152A (en) * | 2018-10-12 | 2018-12-11 | 哈尔滨理工大学 | A kind of sound-power detection method monitoring abrasion of cutting tool state |
| CN109500658A (en) * | 2018-12-13 | 2019-03-22 | 珠海格力智能装备有限公司 | Cutter detection method and device, storage medium and processor |
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