CN102889268A - Internally-arranged sensor of magnetic engaging liquid/air-pressure cylinder - Google Patents
Internally-arranged sensor of magnetic engaging liquid/air-pressure cylinder Download PDFInfo
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- CN102889268A CN102889268A CN2011102049184A CN201110204918A CN102889268A CN 102889268 A CN102889268 A CN 102889268A CN 2011102049184 A CN2011102049184 A CN 2011102049184A CN 201110204918 A CN201110204918 A CN 201110204918A CN 102889268 A CN102889268 A CN 102889268A
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Abstract
The invention provides an internally-arranged sensor of a magnetic engaging liquid/air-pressure cylinder, comprising a shell, a rolling wheel, a magnetic transmission structure and a signal generator, wherein the rolling wheel is arranged inside the shell; a steel rope is wound on the rolling wheel and the steel rope extends out of the shell; the rolling wheel is provided with a scrolling spring; the magnetic transmission structure comprises a first transmission structure and a second transmission structure; the first transmission structure is arranged in a groove in the shell and is connected with a rolling wheel shaft; a separation plate covers the groove; the second transmission structure is arranged at the outer part of the separation plate and corresponds to the position of the first transmission structure; and the signal generator is located at the outer part of the shell and is connected with the second transmission structure. According to the invention, the flexible steel rope is led in so that the volume of the sensor is obviously compressed and a mounting space is saved; the complete separation of a high-pressure medium and an electric part is carried out so that the reliability of using the sensor is improved, the service life is effectively prolonged and the cost is reduced.
Description
Technical field
The present invention relates to sensor technology, relate in particular to the built-in sensor of a kind of magnetic engagement liquid/gas cylinder pressure.
Background technique
Sensor is a kind of signal, the physical condition that can survey, experience the external world, and the information of finding out is passed to the physical unit of other devices.In the Fluid-transmission field, often need the sensor detection such as the information such as position of oil hydraulic cylinder, in order to automatically control.Sensors can be divided into external and built-in, and external sensor structure is simple, be convenient to safeguard, but damages easily, and it is abominable or use important occasion to be used in environment; Built-in sensor has exactly overcome above-mentioned shortcoming, but it brings again installation trouble, the defectives such as manufacture cost height.
At present, built-in typical sensors be American MTS magnetic hysteresis displacement transducer, this sensor is contained in piston rod inside, piston rod need to be processed the aperture longer than stroke, its rear portion needs the space of equal length to install and remove during loading and unloading, and installation and transportation are all very inconvenient.In addition, built-in sensor can not be done oversizely, can only accomplish about 7 meters such as the American MTS sensor, and this application in the gate elevator system of many long strokes just is restricted.
For this reason, although a kind of opening self-detective instrument has been researched and developed in the gate field specially, it is installed on the oil hydraulic cylinder rear portion, and high-pressure medium introduced in the shell, but its running shaft adopts mechanical seal, can not realize the electric fully isolation of hydraulic pressure, the high-pressure medium of leakage will inevitably damage electric part, is difficult to satisfy need of production.For the higher oil hydraulic cylinder of pressure, hermetic resistance is inevitable large, and the withdrawal of steel cable, can't be used the small-scale liquid cylinder pressure so generally all make large-scale aperture instrument unreliable at present.
Summary of the invention
The purpose of this invention is to provide the built-in sensor of a kind of magnetic engagement liquid/gas cylinder pressure, it is convenient the installation not only, take up room little and also reliability high.
For achieving the above object, the present invention adopts following technological scheme:
The built-in sensor of a kind of magnetic engagement liquid/gas cylinder pressure, comprise housing, rolling wheel, magnetic transmission structure and signal generator, wherein: described rolling wheel is arranged on described enclosure interior, be wound with steel cable on the described rolling wheel, have rope outlet on the described housing, the end of described steel cable extend out to described outside by described rope outlet; Be provided with the spiral spring that makes described steel cable be in tensioning state on the described rolling wheel; Described magnetic transmission structure comprises the first drive mechanism and the second driving mechanism; Described housing offers groove at the place, side of described rolling wheel, described the first drive mechanism is arranged on described inside grooves and is connected with described rolling wheel axle, be coated with dividing plate on the described groove, it is outside and corresponding with described the first drive mechanism position that described the second drive mechanism is arranged on described dividing plate; Described signal generator is positioned at described outside, links to each other with described the second drive mechanism.
Further, described housing comprises the first housing of upper-end surface opening, is provided with gland on the described opening; Described rope outlet is positioned at the side of described the first housing; Described groove is positioned at the lower end surface of described the first housing.
Further, described dividing plate arranged outside has pressing plate, and described pressing plate is fixed on the described housing; Described the second drive mechanism is embedded in the described pressing plate.
Further, an end of the axle of described rolling wheel is arranged on the described gland, and the other end is arranged at the bottom of described groove.
Further, the outer ring of described spiral spring is fixed on the described gland, and the inner ring of described spiral spring is fixed on the axle of described rolling wheel.
Further, described spiral spring is comprised of one or several plane spring or clockwork spring.
Further, described the first drive mechanism and the second drive mechanism include disk and the magnet that is arranged on described disk inside.
Further, described disk and dividing plate adopt not that Magnetized Material is prepared from.
Further, described signal generator is incremental encoder or absolute value type encoder.
Further, be provided with Sealing between described dividing plate and described groove, described gland and the described opening.
The built-in sensor of magnetic engagement liquid/gas cylinder pressure provided by the invention by introducing flexible steel cable, has compressed the volume of sensor significantly, has saved installing space, and then convenient the installation; By the fully isolation of high-pressure medium and electric part, improve the reliability that sensor uses again, effectively prolonged working life, reduced cost.
Description of drawings
Fig. 1 is a kind of structural representation of the built-in sensor of magnetic engagement liquid/gas cylinder pressure of the present invention;
Fig. 2 is the magnetic engagement built-in sensor of liquid/gas cylinder pressure of the present invention and liquid/gas cylinder pressure installation diagram.
Embodiment
In order to make purpose of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the built-in sensor of a kind of magnetic engagement liquid/gas cylinder pressure comprises housing 1, rolling wheel 2, magnetic transmission structure 13 and signal generator 9, wherein:
Be provided with the spiral spring 11 that makes steel cable 4 be in tensioning state on the rolling wheel 2; Magnetic transmission structure 13 comprises the first drive mechanism 6 and the second drive mechanism 12;
Housing 1 offers groove 15, the first drive mechanisms 6, and to be arranged on groove 15 inner and is connected with rolling wheel axle 16 at place, the side of rolling wheel 2, is coated with dividing plate 7, the second drive mechanisms 12 on the groove 15 and is arranged on dividing plate 7 outsides and corresponding with the first drive mechanism 6 positions;
Signal generator 9 is positioned at housing 1 outside, links to each other with the second drive mechanism 12.
During application, as shown in Figure 2, with installation of sensors of the present invention on oil hydraulic cylinder or pneumatic cylinder, the piston rod pulling is positioned at the steel cable of outside, steel cable drives the rolling wheel rotation, rolling wheel rotation further drives the magnetic transmission structure rotation, is connected in the corner that signal generator on the magnetic transmission structure accurately detects rolling wheel, thus output electrical signals.During installation, spiral spring is in certain tensioning state, thereby has had certain spring-back force, guarantees that steel wire is in tensioning state, thereby can improve the accuracy of detection.
Fully isolate in order to realize highly pressurised liquid in the housing or gas and electric part, the present invention at first utilizes magnetic transmission structure to replace traditional shaft drive, make drive mechanism break away from the constraint on the mechanical structure, avoided liquid or the gas of high pressure to leak by the joint of mechanical structure, the present invention arranges diaphragm structure at groove again and strengthens isolation effect, prevented that effectively the liquid revealed or gas are to the damage of electric part, improved the reliability of electric part, thereby prolonged working life, reduced production costs.The present invention has saved volume and the installing space of sensor, thereby has made things convenient for installation also by the introducing of flexible steel cable, has reduced installation cost.In addition, because mechanical rotation of the present invention part and steel cable all be in the Lubricants fully, rotate very flexibly, can not be corroded, also reduced wearing and tearing, thereby further improved reliability of the present invention, reduced cost of production.
Preferably, housing 1 of the present invention comprises the first housing 17 of upper-end surface opening particularly, is provided with gland 3 on the opening; Rope outlet 14 is positioned at the side of the first housing 17; Groove 15 is positioned at the lower end surface of the first housing 17.In order to reinforce dividing plate 7, make its better seal casinghousing 1, prevent that housing 1 inner high voltage medium from overflowing, the present invention has pressing plate 5 in aforementioned barriers 7 arranged outside, and pressing plate 5 is fixed on the housing 1; The second drive mechanism 12 is embedded in the pressing plate 5.
Preferably, one end of rolling wheel axle 16 of the present invention is arranged on the gland 3, the other end is arranged at the bottom of groove 15, in order to guarantee that steel cable 4 is in tensioning state all the time, the present invention is being fixed on the outer ring of spiral spring 11 on the gland 3 on the said structure basis, and the inner ring of spiral spring 11 is fixed on the rolling wheel axle 16.As a kind of preferred version, spiral spring 11 is comprised of one or several plane spring or clockwork spring, one skilled in the art will appreciate that the present invention and is limited to above-mentioned spring structure, the present invention is also applicable to have other structural type of spring-back force, repeats no more herein.
For guaranteeing that producing enough gravitation between the first drive mechanism 6 and the second drive mechanism 12 realizes synchronous rotation, the first drive mechanism 6 of the present invention and the second drive mechanism 12 include disk and are arranged on the magnet 10 of disk inside.Simultaneously, in order to improve the accuracy of transmission, preferably adopting not at above-mentioned disk and dividing plate 7, Magnetized Material is prepared from.
Consider the hyperbaric environment of housing 1 inside, housing 1 of the present invention adopts high pressure resistant material to be prepared from, and gland 3, pressing plate 5 and dividing plate 7 adopt hardness high, and the material that can bear larger pressure is prepared from.
Preferably, signal generator 9 of the present invention adopts liquid (gas) and magnetic electric full isolation, complete to mesh the sensor of output electrical signals, preferably adopts incremental encoder or absolute value type encoder.
Because housing 1 inside is hyperbaric environment, the present invention is on the basis of said structure, be provided with the sealability that Sealing 8 improves housing 1 between dividing plate 7 and groove 15, gland 3 and opening, same, rope outlet 14 of the present invention also is provided with Sealing 8 with liquid/gas cylinder pressure joint.
The present invention has saved volume and the installing space of sensor, thereby has made things convenient for installation by the introducing of flexible steel cable, has reduced installation cost.In addition, because the high pressure liquid in the housing or gas and electric part have been realized completely isolation, prevented that effectively the liquid revealed or gas to the damage of electric part, so electric part is very reliable, having guaranteed sensor work reliably and with long-term, again because mechanical rotation part and steel cable all are in the Lubricants fully, rotate very flexibly, can not be corroded, also reduced wearing and tearing, thereby a nearly step has been improved reliability of the present invention, has reduced cost of production.
The above is preferred embodiment of the present invention only, is not to limit practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (10)
1. the built-in sensor of magnetic engagement liquid/gas cylinder pressure is characterized in that, comprises housing, rolling wheel, magnetic transmission structure and signal generator, wherein:
Described rolling wheel is arranged on described enclosure interior, is wound with steel cable on the described rolling wheel, has rope outlet on the described housing, and the end of described steel cable extend out to described outside by described rope outlet;
Be provided with the spiral spring that makes described steel cable be in tensioning state on the described rolling wheel;
Described magnetic transmission structure comprises the first drive mechanism and the second driving mechanism;
Described housing offers groove at the place, side of described rolling wheel, described the first drive mechanism is arranged on described inside grooves and is connected with described rolling wheel axle, be coated with dividing plate on the described groove, it is outside and corresponding with described the first drive mechanism position that described the second drive mechanism is arranged on described dividing plate;
Described signal generator is positioned at described outside, links to each other with described the second drive mechanism.
2. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 1 is characterized in that described housing comprises the first housing of upper-end surface opening, is provided with gland on the described opening; Described rope outlet is positioned at the side of described the first housing; Described groove is positioned at the lower end surface of described the first housing.
3. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 2 is characterized in that described dividing plate arranged outside has pressing plate, and described pressing plate is fixed on the described housing; Described the second drive mechanism is embedded in the described pressing plate.
4. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 2 is characterized in that an end of the axle of described rolling wheel is arranged on the described gland, and the other end is arranged at the bottom of described groove.
5. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 4 is characterized in that the outer ring of described spiral spring is fixed on the described gland, and the inner ring of described spiral spring is fixed on the axle of described rolling wheel.
6. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 5 is characterized in that described spiral spring is comprised of one or several plane spring or clockwork spring.
7. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 1 is characterized in that described the first drive mechanism and the second drive mechanism include disk and be arranged on the magnet of described disk inside.
8. the built-in sensor of magnetic according to claim 7 engagement liquid/gas cylinder pressure is characterized in that, described disk and dividing plate adopt not that Magnetized Material is prepared from.
9. the built-in sensor of each described magnetic engagement liquid/gas cylinder pressure is characterized in that described signal generator is incremental encoder or absolute value type encoder according to claim 1-8.
10. the built-in sensor of magnetic engagement liquid/gas cylinder pressure according to claim 9 is characterized in that, is provided with Sealing between described dividing plate and described groove, described gland and the described opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204918.4A CN102889268B (en) | 2011-07-21 | 2011-07-21 | A kind of magnetic engages liquid/gas cylinder pressure built-in sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204918.4A CN102889268B (en) | 2011-07-21 | 2011-07-21 | A kind of magnetic engages liquid/gas cylinder pressure built-in sensor |
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| CN102889268A true CN102889268A (en) | 2013-01-23 |
| CN102889268B CN102889268B (en) | 2017-09-01 |
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| CN201110204918.4A Active CN102889268B (en) | 2011-07-21 | 2011-07-21 | A kind of magnetic engages liquid/gas cylinder pressure built-in sensor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499225B1 (en) * | 1999-11-16 | 2002-12-31 | Asm Automation Sensorik Messtechnik Gmbh | Measuring cable-path sensor |
| CN201203403Y (en) * | 2008-03-28 | 2009-03-04 | 程天库 | Pull rope type displacement sensor |
| CN201628536U (en) * | 2010-02-03 | 2010-11-10 | 邓锦杰 | Displacement sensor for pull rope |
| CN201772856U (en) * | 2010-08-19 | 2011-03-23 | 中国飞机强度研究所 | Pull wire type linear displacement sensor |
| CN201858958U (en) * | 2009-12-18 | 2011-06-08 | 北京泰泽科技开发有限公司 | Stay wire displacement sensor for underwater use |
-
2011
- 2011-07-21 CN CN201110204918.4A patent/CN102889268B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499225B1 (en) * | 1999-11-16 | 2002-12-31 | Asm Automation Sensorik Messtechnik Gmbh | Measuring cable-path sensor |
| CN201203403Y (en) * | 2008-03-28 | 2009-03-04 | 程天库 | Pull rope type displacement sensor |
| CN201858958U (en) * | 2009-12-18 | 2011-06-08 | 北京泰泽科技开发有限公司 | Stay wire displacement sensor for underwater use |
| CN201628536U (en) * | 2010-02-03 | 2010-11-10 | 邓锦杰 | Displacement sensor for pull rope |
| CN201772856U (en) * | 2010-08-19 | 2011-03-23 | 中国飞机强度研究所 | Pull wire type linear displacement sensor |
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| CN102889268B (en) | 2017-09-01 |
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