CN104266782A - Rubber covered roller operating pressure monitoring device - Google Patents
Rubber covered roller operating pressure monitoring device Download PDFInfo
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- CN104266782A CN104266782A CN201410535065.6A CN201410535065A CN104266782A CN 104266782 A CN104266782 A CN 104266782A CN 201410535065 A CN201410535065 A CN 201410535065A CN 104266782 A CN104266782 A CN 104266782A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000009530 blood pressure measurement Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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Abstract
The invention discloses a rubber covered roller operating pressure monitoring device. The rubber covered roller operating pressure monitoring device comprises an upper computer, a wireless receiving module, a wireless transmitting module, a single-chip microcomputer and at least one group of pressure sensors. The pressure sensors are arranged on the surface or inside an outer covering rubber layer of a rubber covered roller and electrically connected with the single-chip microcomputer. The single-chip microcomputer and the wireless transmitting module are both arranged on a roller neck of the rubber covered roller and electrically connected. The wireless transmitting module and the wireless receiving module conduct data transmission through wireless radio waves. The wireless receiving module is electrically connected with the upper computer. The single-chip microcomputer collects operating pressure data of the outer covering rubber layer of the rubber covered roller through the pressure sensors and sends the operating pressure data of the outer covering rubber layer to the wireless receiving module through the wireless transmitting module. The wireless receiving module receives the operating pressure data of the outer covering rubber layer and sends the operating pressure data to the upper computer. By means of the rubber covered roller operating pressure monitoring device, the operating pressure of the industrial rubber covered roller can be monitored, the accuracy of fixed installation of the industrial rubber covered roller is improved, and the machining quality of the industrial rubber covered roller is also improved.
Description
Technical field
The present invention relates to pressure monitoring technical field, particularly relate to a kind of rubber roll operating pressure monitoring device.
Background technology
As shown in Figures 1 to 8, rubber roll is generally by metal-cored 1, roll neck 2 with cover glue-line 3 outward and form; Wherein, cover glue-line 3 outward to be normally made up of hard glue-line and outer layer glue.Industrial used rubber roller for industry is obtained for widespread use in the fields such as papermaking, printing and dyeing, printing, grain processing, metallurgy, plastic processing.
To carry out the rubber roller for industry of press polish process in paper technology to paper, when normally working, the pressure distribution of roll surfaces should be more uniform, but because rubber roll is all fixed installation by two ends, therefore when rubber roll is longer, very easily there is the situation of unbalance stress in roll surfaces, this may cause roll surfaces local pressure excessive, the rubber layer of roll surfaces even can be caused to occur damaged.Meanwhile, because rubber roll is extruding mutually in the course of the work, the pressure therefore between rubber roll can produce important impact to the quality of paper.In the prior art, not to the device that rubber roll pressure is monitored, this brings very big inconvenience to the use of rubber roller for industry, once roll surfaces bears pressure inequality, will have a strong impact on the quality of paper.
Summary of the invention
For above-mentioned weak point of the prior art, the invention provides a kind of rubber roll operating pressure monitoring device, for monitoring the operating pressure of rubber roller for industry.
The object of the invention is to be achieved through the following technical solutions:
A kind of rubber roll operating pressure monitoring device, is characterized in that, comprising: host computer, wireless receiving module, wireless transmitter module, single-chip microcomputer and at least one group of pressure transducer;
Outer surface or the inside covering glue-line of rubber roll is located at by pressure transducer, and be electrically connected with single-chip microcomputer; Single-chip microcomputer and wireless transmitter module are all located on the roll neck of rubber roll, and single-chip microcomputer is electrically connected with wireless transmitter module; Wireless transmitter module and wireless receiving module carry out data transmission by radiowave; Wireless receiving module is electrically connected with host computer;
Single-chip microcomputer gathers the outer operating pressure data covering glue-line of rubber roll by pressure transducer, and by wireless transmitter module, the operating pressure data covering glue-line is outward sent to wireless receiving module; Wireless receiving module receives the outer operating pressure data covering glue-line, and sends to host computer.
Preferably, often organize pressure transducer and comprise one for measuring the piezoelectric film sensor of the radial pressure of rubber roll and one for measuring the piezoresistive strain sheet of rubber roll circumference pressure; Rubber roll outer covers the surface of glue-line or inside is provided with at least one pressure measurement point, and each pressure measurement point arranges one group of pressure transducer.
Preferably, when pressure transducer be located at rubber roll outer cover the inside of glue-line time, the surface that pressure transducer distance covers glue-line is outward not more than 20mm.Preferably, the roll neck of rubber roll is provided with conducting ring; Pressure transducer is electrically connected with single-chip microcomputer by conducting ring.
Preferably, the outside of single-chip microcomputer is provided with metal explosion-proof shell; Single-chip microcomputer is fixed on the roll neck of rubber roll by this metal explosion-proof shell.Preferably, wireless transmitter module and wireless receiving module are the telecommunication circuits based on IEEE 802.15.4.Preferably, wireless receiving module is connected by pci interface, PCI-E interface, USB interface or RS232 serial ports with host computer.Preferably, single-chip microcomputer adopts intrinsic safety type STM32 single-chip microcomputer; Wireless transmitter module adopts the radio transmitter based on nRF2401 rf chip; Wireless receiving module adopts the wireless receiving circuit based on nRF2401 rf chip.
As seen from the above technical solution provided by the invention, the rubber roll operating pressure monitoring device that the embodiment of the present invention provides obtains the radial pressure value of rubber roll by piezoelectric film sensor, and obtain rubber roll circumference pressure value by piezoresistive strain sheet, these pressure datas, after the process of single-chip microcomputer 12, send to wireless receiving module 14 by wireless transmitter module 13; Wireless receiving module 14 receives these pressure datas and parses the data of the radial pressure of rubber roll and the data of rubber roll circumference pressure, then sends to host computer 15, for monitoring, analysis, record, stores.As can be seen here, not only structure is simple, measuring accuracy is high, safe and reliable, anti-explosion, anti-corrosion for the rubber roll operating pressure monitoring device that the embodiment of the present invention provides, and can monitor the operating pressure of rubber roller for industry, thus the hard-wired accuracy of rubber roller for industry can be improved, and rubber roller for industry process the product quality of the product of producing.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation one of the rubber roll operating pressure monitoring device that Fig. 1 provides for the embodiment of the present invention.
The structural representation two of the rubber roll operating pressure monitoring device that Fig. 2 provides for the embodiment of the present invention.
The cross section structure signal of rubber roll operating pressure monitoring device shown in Fig. 1 that Fig. 3 provides for the embodiment of the present invention.
The cross section structure signal of rubber roll operating pressure monitoring device shown in Fig. 2 that Fig. 4 provides for the embodiment of the present invention.
The structural representation three of the rubber roll operating pressure monitoring device that Fig. 5 provides for the embodiment of the present invention.
The structural representation four of the rubber roll operating pressure monitoring device that Fig. 6 provides for the embodiment of the present invention.
The cross section structure signal of rubber roll operating pressure monitoring device shown in Fig. 5 that Fig. 7 provides for the embodiment of the present invention.
The cross section structure signal of rubber roll operating pressure monitoring device shown in Fig. 6 that Fig. 8 provides for the embodiment of the present invention.
The structural representation five of the rubber roll operating pressure monitoring device that Fig. 9 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
First it should be noted that, the rubber roll operating pressure monitoring device that the embodiment of the present invention provides mainly is applicable to the rubber roller for industry that radius is 150 ~ 165mm.Mainly to be described the rubber roller for industry that paper carries out press polish process in paper technology in present specification, but this is not construed as limiting the invention.Below the rubber roll operating pressure monitoring device that the embodiment of the present invention provides is described in detail.
As shown in Figures 1 to 9, a kind of rubber roll operating pressure monitoring device, its concrete structure comprises: host computer 15, wireless receiving module 14, wireless transmitter module 13, single-chip microcomputer 12 and at least one group of pressure transducer 11; Outer surface or the inside covering glue-line 3 of rubber roll is located at by pressure transducer 11, and be electrically connected with single-chip microcomputer 12; Single-chip microcomputer 12 and wireless transmitter module 13 are all located on the roll neck 2 of rubber roll, and single-chip microcomputer 12 is electrically connected with wireless transmitter module 13; Wireless transmitter module 13 and wireless receiving module 14 carry out data transmission by radiowave; Wireless receiving module 14 is electrically connected with host computer 15;
Single-chip microcomputer 12 gathers the outer operating pressure data covering glue-line 3 of rubber roll by pressure transducer 11, and by wireless transmitter module 13, the operating pressure data covering glue-line 3 is outward sent to wireless receiving module 14; Wireless receiving module 14 receives the outer operating pressure data covering glue-line 3, and sends to host computer 15.
Wherein, this rubber roll operating pressure monitoring device can comprise following specific embodiments:
(1) often organize pressure transducer 11 and can comprise one for measuring the piezoelectric film sensor of the radial pressure of rubber roll and one for measuring the piezoresistive strain sheet of rubber roll circumference pressure; Rubber roll outer covers the surface of glue-line 3 or inside is provided with at least one pressure measurement point, and each pressure measurement point is provided with one group of pressure transducer 11, namely one for measuring the piezoelectric film sensor of the radial pressure of this pressure measurement point place rubber roll and one for measuring the piezoresistive strain sheet of this pressure measurement point place rubber roll circumference pressure.Piezoelectric film sensor and piezoresistive strain sheet are not be positioned over same pressure measurement point overlappingly, but take place side by side or leave the modes of emplacements such as certain interval.Size due to piezoelectric film sensor and piezoresistive strain sheet is far smaller than the size of rubber roller for industry, therefore for the volume of rubber roller for industry, the volume of piezoelectric film sensor and piezoresistive strain sheet is negligible, thus same pressure measurement point does not place a piezoelectric film sensor overlappingly and a piezoresistive strain sheet can be thought to carry out pressure detection to same pressure measurement point approx.
In actual applications, cover the surface of glue-line 3 or inside outward and can to distribute regularly N number of pressure measurement point, each pressure measurement point can be provided with one group of pressure transducer 11, i.e. total N group pressure transducer 11; And often organize pressure transducer 11 and can comprise a piezoelectric film sensor and a piezoresistive strain sheet, as long as therefore often organize in pressure transducer 11, gap and the modes of emplacement of piezoelectric film sensor and piezoresistive strain sheet are all consistent, piezoelectric film sensor and piezoresistive strain sheet so just can be made to form the array of pressure sensors of a rule distribution, and this contributes to monitoring more accurately the operating pressure of rubber roll diverse location and analyzing.
(2) when pressure transducer 11 be located at rubber roll outer cover the inside of glue-line 3 time, pressure transducer 11 is not more than 20mm apart from the surface covering glue-line 3 outward, if pressure transducer 11 is excessive with the surface distance covering glue-line 3 outward, so less pressure may can not be detected by pressure transducer 11, and this can be brought error to the monitoring of rubber roll operating pressure.
(3) roll neck 2 of rubber roll is provided with conducting ring 16; Pressure transducer 11 is electrically connected with single-chip microcomputer 12 by conducting ring 16.In actual applications, this conducting ring 16 can adopt model in prior art to be the conducting ring of SRM-12-06D.
(4) outside of single-chip microcomputer 12 is provided with metal explosion-proof shell; Single-chip microcomputer 12 is fixed on the roll neck 2 of rubber roll by this metal explosion-proof shell.Due to the working environment more complicated of rubber roller for industry, single-chip microcomputer 12 is arranged at the risk that the roll neck 2 of rubber roller for industry needs prevention work environment to bring, therefore single-chip microcomputer 12 is first fixed in metal explosion-proof shell, be fixed on the roll neck 2 of rubber roll by this metal explosion-proof shell again, this can improve the adaptive faculty of single-chip microcomputer 12 environment to external world.
(5) wireless transmitter module 13 and wireless receiving module 14 are the telecommunication circuits based on IEEE 802.15.4; In actual applications, wireless transmitter module 13 can adopt the radio transmitter based on nRF2401 rf chip in prior art; Wireless receiving module 14 can adopt the wireless receiving circuit based on nRF2401 rf chip in prior art.
(6) wireless receiving module 14 can be a wireless communication module independent of host computer 15, also can be the wireless communication module that host computer 15 inherently has.Wireless receiving module 14 can be connected by pci interface, PCI-E interface, USB interface or RS232 serial ports with host computer 15.
(7) single-chip microcomputer 12 preferably adopts intrinsic safety type STM32 single-chip microcomputer of the prior art; Intrinsic safety type is the abbreviation of essential safe type, it is the safest a kind of type of protection [of an electrical apparatus for explosive atmospheres of all type of protection [of an electrical apparatus for explosive atmospheres, no matter intrinsic safety type STM32 single-chip microcomputer is internal short-circuit or short circuit, the flammable explosive gas of surrounding environment all can not be caused to explode, this can make single-chip microcomputer 12 can adapt to the working environment of rubber roller for industry better, thus improves this rubber roll operating pressure monitoring device security of operation ability.
Particularly, because rubber roller for industry is in operational process, its radial direction and circumference are all under pressure, and therefore the course of work of this rubber roll operating pressure monitoring device is as follows: piezoelectric film sensor obtains the radial pressure value of rubber roll, and is converted into voltage value signal; Piezoresistive strain sheet obtains rubber roll circumference pressure value, is also converted into voltage value signal; These voltage value signals, after the process of single-chip microcomputer 12, send to wireless receiving module 14 by wireless transmitter module 13 with the form of radiowave; Wireless receiving module 14 receives these radiowaves, and parses the data of the radial pressure of rubber roll or the data of rubber roll circumference pressure, then sends to host computer 15, for monitoring, analysis, record, stores.
In addition, according to software programming technique of the prior art and mathematical modeling technology, specific program can be write on host computer 15, to realize carrying out automated data analysis to the data of the radial pressure of rubber roll and the data of rubber roll circumference pressure, and carry out different responses for different analysis results, such as: pressure inequality is reported to the police, data store the responses such as overflow alarm.
In order to the technique effect more clearly showing technical scheme provided by the present invention and produce, with several specific embodiment, rubber roll operating pressure monitoring device provided by the present invention is described in detail below.
Embodiment one
As shown in Fig. 5, Fig. 7 and Fig. 9, a kind of rubber roll operating pressure monitoring device, its concrete structure comprises: host computer 15, wireless receiving module 14, wireless transmitter module 13, single-chip microcomputer 12 and many group pressure transducers 11; Often organize pressure transducer 11 and comprise a piezoelectric film sensor and a piezoresistive strain sheet; Each piezoelectric film sensor and piezoresistive strain sheet are all pasted onto the outer surface covering glue-line 3 of rubber roll, and are electrically connected with single-chip microcomputer 12 by conducting ring 16; Conducting ring 16, single-chip microcomputer 12 and wireless transmitter module 13 are all located on the roll neck 2 of rubber roll, and single-chip microcomputer 12 is electrically connected with wireless transmitter module 13; Wireless transmitter module 13 and wireless receiving module 14 carry out data transmission by radiowave; Wireless receiving module 14 is electrically connected with host computer 15.
Wherein, piezoelectric film sensor is of a size of: 15 × 12 × 1mm; Piezoresistive strain sheet is of a size of: 5.4 × 7.5 × 1mm; Conducting ring 16 adopts model in prior art to be the conducting ring of SRM-12-06D; Single-chip microcomputer 12 adopts intrinsic safety type STM32 single-chip microcomputer of the prior art; Wireless transmitter module 13 adopts the radio transmitter based on nRF2401 rf chip in prior art; Wireless receiving module 14 adopts the wireless receiving circuit based on nRF2401 rf chip in prior art.Wireless receiving module 14 is wireless communication modules that host computer 15 inherently has, and wireless receiving module 14 can be connected by pci interface with host computer 15.
Particularly, the course of work of this rubber roll operating pressure monitoring device is as follows: piezoelectric film sensor obtains the radial pressure value of rubber roll, and is converted into voltage value signal; Piezoresistive strain sheet obtains rubber roll circumference pressure value, is also converted into voltage value signal; These voltage value signals, after the process of single-chip microcomputer 12, send to wireless receiving module 14 by wireless transmitter module 13 with the form of radiowave; Wireless receiving module 14 receives these radiowaves, and parses the data of the radial pressure of rubber roll or the data of rubber roll circumference pressure, then sends to host computer 15, for monitoring, analysis, record, stores.
In actual applications, this rubber roll operating pressure monitoring device is applied in radius is 500mm, to cover glue-line 3 thickness be outward on the rubber roller for industry of 30mm, learnt by test of many times, the pressure measurement accuracy of this rubber roll operating pressure monitoring device can reach 20 newton/cm
2.
As fully visible, the advantages such as the embodiment of the present invention has that structure is simple, measuring accuracy is high, safe and reliable, explosion-proof, anticorrosion, can not only monitor the operating pressure of rubber roller for industry, and can Real-Time Monitoring be realized, thus the hard-wired accuracy of rubber roller for industry can be improved, and rubber roller for industry process the product quality of the product of producing.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. a rubber roll operating pressure monitoring device, is characterized in that, comprising: host computer, wireless receiving module, wireless transmitter module, single-chip microcomputer and at least one group of pressure transducer;
Outer surface or the inside covering glue-line of rubber roll is located at by pressure transducer, and be electrically connected with single-chip microcomputer; Single-chip microcomputer and wireless transmitter module are all located on the roll neck of rubber roll, and single-chip microcomputer is electrically connected with wireless transmitter module; Wireless transmitter module and wireless receiving module carry out data transmission by radiowave; Wireless receiving module is electrically connected with host computer;
Single-chip microcomputer gathers the outer operating pressure data covering glue-line of rubber roll by pressure transducer, and by wireless transmitter module, the operating pressure data covering glue-line is outward sent to wireless receiving module; Wireless receiving module receives the outer operating pressure data covering glue-line, and sends to host computer.
2. rubber roll operating pressure monitoring device according to claim 1, is characterized in that, often organizes pressure transducer and comprises one for measuring the piezoelectric film sensor of the radial pressure of rubber roll and one for measuring the piezoresistive strain sheet of rubber roll circumference pressure;
Rubber roll outer covers the surface of glue-line or inside is provided with at least one pressure measurement point, and each pressure measurement point arranges one group of pressure transducer.
3. rubber roll operating pressure monitoring device according to claim 2, is characterized in that, when pressure transducer be located at rubber roll outer cover the inside of glue-line time, the surface that pressure transducer distance covers glue-line is outward not more than 20mm.
4. rubber roll operating pressure monitoring device according to any one of claim 1 to 3, it is characterized in that, the roll neck of rubber roll is provided with conducting ring; Pressure transducer is electrically connected with single-chip microcomputer by conducting ring.
5. rubber roll operating pressure monitoring device according to any one of claim 1 to 3, is characterized in that, the outside of single-chip microcomputer is provided with metal explosion-proof shell; Single-chip microcomputer is fixed on the roll neck of rubber roll by this metal explosion-proof shell.
6. rubber roll operating pressure monitoring device according to any one of claim 1 to 3, is characterized in that, wireless transmitter module and wireless receiving module are the telecommunication circuits based on IEEE 802.15.4.
7. rubber roll operating pressure monitoring device according to any one of claim 1 to 3, is characterized in that, wireless receiving module is connected by pci interface, PCI-E interface, USB interface or RS232 serial ports with host computer.
8. rubber roll operating pressure monitoring device according to any one of claim 1 to 3, is characterized in that, single-chip microcomputer adopts intrinsic safety type STM32 single-chip microcomputer; Wireless transmitter module adopts the radio transmitter based on nRF2401 rf chip; Wireless receiving module adopts the wireless receiving circuit based on nRF2401 rf chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535065.6A CN104266782B (en) | 2014-10-11 | 2014-10-11 | Rubber covered roller operating pressure monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410535065.6A CN104266782B (en) | 2014-10-11 | 2014-10-11 | Rubber covered roller operating pressure monitoring device |
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| CN104266782A true CN104266782A (en) | 2015-01-07 |
| CN104266782B CN104266782B (en) | 2017-02-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107323002A (en) * | 2017-08-25 | 2017-11-07 | 上海大松瓦楞辊有限公司 | A kind of Corrugator roller extractor fan |
| CN105806518B (en) * | 2016-05-25 | 2018-10-02 | 浙江亚卫通科技有限公司 | The anti-shear signal detecting system of stage based on self power generation and wireless transmission |
| CN111531923A (en) * | 2020-06-08 | 2020-08-14 | 中国水产科学研究院渔业机械仪器研究所 | Roller brush capable of displaying pressure and working method |
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| CN201924237U (en) * | 2010-12-23 | 2011-08-10 | 杭州顺隆胶辊有限公司 | Wireless real-time monitor system for rubber-covered rollers |
| CN203062440U (en) * | 2013-01-04 | 2013-07-17 | 杭州顺隆胶辊有限公司 | Detecting device of rubber roller monitoring system |
| CN103604399A (en) * | 2013-10-24 | 2014-02-26 | 沈阳达尔科技开发有限公司 | Highly-intelligent comprehensive measuring instrument and measuring method |
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2014
- 2014-10-11 CN CN201410535065.6A patent/CN104266782B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201924237U (en) * | 2010-12-23 | 2011-08-10 | 杭州顺隆胶辊有限公司 | Wireless real-time monitor system for rubber-covered rollers |
| CN203062440U (en) * | 2013-01-04 | 2013-07-17 | 杭州顺隆胶辊有限公司 | Detecting device of rubber roller monitoring system |
| CN103604399A (en) * | 2013-10-24 | 2014-02-26 | 沈阳达尔科技开发有限公司 | Highly-intelligent comprehensive measuring instrument and measuring method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806518B (en) * | 2016-05-25 | 2018-10-02 | 浙江亚卫通科技有限公司 | The anti-shear signal detecting system of stage based on self power generation and wireless transmission |
| CN107323002A (en) * | 2017-08-25 | 2017-11-07 | 上海大松瓦楞辊有限公司 | A kind of Corrugator roller extractor fan |
| CN111531923A (en) * | 2020-06-08 | 2020-08-14 | 中国水产科学研究院渔业机械仪器研究所 | Roller brush capable of displaying pressure and working method |
| CN111531923B (en) * | 2020-06-08 | 2024-03-12 | 中国水产科学研究院渔业机械仪器研究所 | Roller brush capable of displaying pressure and working method |
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| CN104266782B (en) | 2017-02-15 |
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Owner name: TENGZHOU LIHUA MITAIKESI TOP ROLLER CO., LTD. Free format text: FORMER OWNER: ZAOZHUANG UNIVERSITY Effective date: 20150806 |
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