CN102889268B - A kind of magnetic engages liquid/gas cylinder pressure built-in sensor - Google Patents
A kind of magnetic engages liquid/gas cylinder pressure built-in sensor Download PDFInfo
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- CN102889268B CN102889268B CN201110204918.4A CN201110204918A CN102889268B CN 102889268 B CN102889268 B CN 102889268B CN 201110204918 A CN201110204918 A CN 201110204918A CN 102889268 B CN102889268 B CN 102889268B
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- gas cylinder
- cylinder pressure
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Abstract
A kind of magnetic engages liquid/gas cylinder pressure built-in sensor, including housing, rolling wheel, magnetic transmission structure and signal generator, wherein, rolling wheel, which is arranged on enclosure interior, rolling wheel, is wound with steel cable, and steel cable extend out to hull outside；Scroll spring is provided with rolling wheel；Magnetic transmission structure includes the first drive mechanism and the second transmission mechanism；First drive mechanism is arranged in housing inner groovy and is connected with rolling wheel axle, covered with dividing plate on groove, and the second drive mechanism is arranged on outside dividing plate and corresponding with the first drive mechanism position；Signal generator is located at hull outside, is connected with the second drive mechanism.The present invention significantly have compressed the volume of sensor, save installing space by introducing flexible steel cable, further through the completely isolated of high-pressure medium and electric part, improve the reliability that sensor is used, effectively extends service life, reduce cost.
Description
Technical field
The present invention relates to sensor technology, more particularly to a kind of magnetic engagement liquid/gas cylinder pressure built-in sensor.
Background technology
Sensor is a kind of signal, physical condition that can be detected, experience the external world, and gives other by the information transmission found out
The physical unit of device.In Fluid-transmission field, it is often necessary to which sensor detects the position information of such as hydraulic cylinder, to enter
Row is automatically controlled.Sensors can be divided into external and built-in, and external sensor structure is simple, be easy to safeguard, but holds
It is fragile, it is impossible to used in bad environments or the important occasion of use；Built-in sensor exactly overcomes disadvantages mentioned above, but it is again
Installation is brought to bother, the defect such as manufacturing cost height.
At present, built-in most typically sensor is U.S. MTS magnetic hysteresis displacement transducers, and this sensor is mounted in piston rod
Inside, piston rod needs to process the aperture longer than stroke, and its rear portion needs the space of equal length to assemble and disassemble during handling, peace
Shipment is defeated all very inconvenient.In addition, built-in sensor can not be made oversize, such as U.S.'s MTS sensors can only accomplish 7 meters of left sides
The right side, this is just restricted in the application of the gate lifting system of many long strokes.
Therefore, although gate field specially have developed a kind of opening self-detective instrument, it is installed on hydraulic cylinder rear portion, and by high pressure
Medium is introduced in shell, but its rotary shaft uses mechanical seal, it is impossible to realize that hydra-electric is completely isolated, the high-pressure medium of leakage must
Electric part can be so damaged, it is difficult to meet production needs.For the higher hydraulic cylinder of pressure, hermetic resistance is necessarily big, the receipts of steel cable
Returning will be unreliable, so typically all making large-scale aperture instrument at present, small-scale liquid cylinder pressure can not be used.
The content of the invention
Liquid/gas cylinder pressure built-in sensor is engaged it is an object of the invention to provide a kind of magnetic, it, which not only facilitates, installs, and takes
Space is small and reliability is high.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of magnetic engages liquid/gas cylinder pressure built-in sensor, including housing, rolling wheel, magnetic transmission structure and signal generator,
Wherein：The rolling wheel, which is arranged on the enclosure interior, the rolling wheel, is wound with steel cable, has rope outlet, institute on the housing
The end for stating steel cable extend out to the hull outside by the rope outlet；Be provided with the rolling wheel make the steel cable be in
The scroll spring of tight state；The magnetic transmission structure includes the first drive mechanism and the second transmission mechanism；The housing is described
Open up fluted at the side of rolling wheel, first drive mechanism is arranged on the inside grooves and is connected with the rolling wheel axle,
Covered with dividing plate on the groove, second drive mechanism be arranged on outside the dividing plate and with first drive mechanism position
Put corresponding；The signal generator is located at the hull outside, is connected with second drive mechanism.
Further, the housing includes being provided with gland in the first housing of upper surface opening, the opening；It is described go out
Mouth of restricting is located at the side of first housing；The groove is located at the lower surface of first housing.
Further, pressing plate is provided with the outside of the dividing plate, the pressing plate is fixed on the housing；Second transmission
Structure is embedded in the pressing plate.
Further, one end of the axle of the rolling wheel is arranged on the gland, and the other end is arranged at the bottom of the groove
Portion.
Further, the outer ring of the scroll spring is fixed on the gland, and the inner ring of the scroll spring is fixed on
On the axle of the rolling wheel.
Further, the scroll spring is made up of one or several plane springs or clockwork spring.
Further, first drive mechanism and the second drive mechanism include disk and are arranged on inside the disk
Magnet.
Further, the disk and dividing plate are prepared from using not Magnetized Material.
Further, the signal generator is incremental encoder or absolute value type encoder.
Further, it is provided with seal between the dividing plate and the groove, the gland and the opening.
The magnetic engagement liquid/gas cylinder pressure built-in sensor that the present invention is provided, by introducing flexible steel cable, significantly have compressed
The volume of sensor, saves installing space, and then convenient installation；Further through the completely isolated of high-pressure medium and electric part,
The reliability that sensor is used is improved, service life is effectively extended, reduces cost.
Brief description of the drawings
Fig. 1 is a kind of structural representation that magnetic of the present invention engages liquid/gas cylinder pressure built-in sensor；
Fig. 2 is magnetic of the present invention engagement liquid/gas cylinder pressure built-in sensor and liquid/gas cylinder pressure installation diagram.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and embodiment, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in figure 1, a kind of magnetic engagement liquid/gas cylinder pressure built-in sensor, including housing 1, rolling wheel 2, magnetic transmission structure
13 and signal generator 9, wherein：
Rolling wheel 2 is arranged on inside housing 1, and being wound with rolling wheel 2 on steel cable 4, housing 1 has rope outlet 14, the end of steel cable 4
End is extend out to outside housing 1 by rope outlet 14；
The scroll spring 11 for making steel cable 4 be in tensioning state is provided with rolling wheel 2；Magnetic transmission structure 13 includes the first transmission
The drive mechanism 12 of structure 6 and second；
Housing 1 opens up fluted 15 at the side of rolling wheel 2, the first drive mechanism 6 be arranged on the inside of groove 15 and with volume
Wheel shaft 16 is connected, covered with dividing plate 7 on groove 15, the second drive mechanism 12 be arranged on the outside of dividing plate 7 and with the first drive mechanism 6
Position is corresponding；
Signal generator 9 is located at outside housing 1, is connected with the second drive mechanism 12.
Using when, as shown in Fig. 2 inventive sensor is arranged on hydraulic cylinder or pneumatic cylinder, piston rod, which is pulled, to be located at
The steel cable of hull outside, steel cable drives rolling wheel rotation, and rolling wheel rotation is further driven to magnetic transmission structure rotation, is connected to Magnetic drive
Signal generator in structure accurately detects the corner of rolling wheel, so as to export electric signal.During installation, scroll spring is in certain
Tensioning state, thus be provided with certain screen resilience, it is ensured that steel wire is in tensioning state, so as to improve the accurate of detection
Property.
In order to which the highly pressurised liquid or gas realized in housing are adequately isolated with electric part, the present invention is first with Magnetic drive
Structure replaces traditional axle transmission, drive mechanism has been broken away from the constraint in mechanical structure, it is to avoid the liquid or gas of high pressure
Leaked by the junction of mechanical structure, the present invention sets diaphragm structure to strengthen isolation effect in groove again, effectively prevents
The damage of the liquid or gas of leakage to electric part is stopped, has improved the reliability of electric part, the longevity is used so as to extend
Life, reduces production cost.The present invention also by the introducing of flexible steel cable, saves the volume and installing space of sensor, so that
Installation is facilitated, installation cost is reduced.Further, since the mechanical rotation part and steel cable of the present invention are all completely in lubricating fluid
In, rotate very flexible, will not be corroded, also reduce abrasion, so as to further increase the reliability of the present invention, reduce
Production cost.
Preferably, inventive shell 1 specifically includes being provided with gland 3 in the first housing 17 of upper surface opening, opening；
Rope outlet 14 is located at the side of the first housing 17；Groove 15 is located at the lower surface of the first housing 17.In order to reinforce dividing plate 7, make it
Preferably seal casinghousing 1, prevents the inner high voltage medium of housing 1 from overflowing, and the present invention is provided with pressing plate 5, pressing plate in the outside of aforementioned barriers 7
5 are fixed on housing 1；Second drive mechanism 12 is embedded in pressing plate 5.
Preferably, one end of rolling wheel axle 16 of the present invention is arranged on gland 3, and the other end is arranged at the bottom of groove 15, is
Guarantee steel cable 4 is in tensioning state all the time, and the outer ring of scroll spring 11 is fixed on pressure by the present invention on the basis of said structure
On lid 3, the inner ring of scroll spring 11 is fixed on rolling wheel axle 16.As a kind of preferred scheme, scroll spring 11 is by one or several
Individual plane spring or clockwork spring composition, it will be apparent to a skilled person that the present invention and being limited to above-mentioned spring knot
Structure, the present invention is also applicable the other structures form with screen resilience, and here is omitted.
Synchronous axial system is realized to ensure to produce enough gravitation between the first drive mechanism 6 and the second drive mechanism 12,
The first drive mechanism 6 and the second drive mechanism 12 of the present invention includes disk and the magnet 10 being arranged on inside disk.Meanwhile,
In order to improve the accuracy of transmission, it is prepared from above-mentioned disk and dividing plate 7 preferably by not Magnetized Material.
In view of the hyperbaric environment inside housing 1, housing 1 of the invention is prepared from using high pressure resistant material, gland 3,
Pressing plate 5 and dividing plate 7 are high using hardness, and the material that can bear larger pressure is prepared from.
Preferably, signal generator 9 of the present invention is using liquid (gas) and magnetic engagement output electric signal electrically isolate entirely, complete
Sensor, preferably by incremental encoder or absolute value type encoder,.
Because the inside of housing 1 is hyperbaric environment, the present invention is on the basis of said structure, in dividing plate 7 and groove 15, gland
It is provided with seal 8 to improve the sealing property of housing 1, equally, rope outlet 14 of the present invention and liquid/gas pressure between 3 and opening
Cylinder junction is also equipped with seal 8.
The present invention saves the volume and installing space of sensor by the introducing of flexible steel cable, so that installation is facilitated,
Reduce installation cost.Further, since high pressure liquid or gas in housing and electric part realize it is complete isolate, effectively
The damage of the liquid or gas of leakage to electric part is prevented, so electric part is very reliable, it is ensured that sensor is long-term
Reliable work, and because mechanical rotation part and steel cable are all completely in lubricating fluid, rotate very flexible, will not be rotten
Erosion, also reduces abrasion, so as to further improve the reliability of the present invention, reduces production cost.
The foregoing is only presently preferred embodiments of the present invention, not for limit the present invention practical range；If do not taken off
From the spirit and scope of the present invention, the present invention is modified or equivalent substitution, all should covered in the claims in the present invention
Among protection domain.
Claims (10)
1. a kind of magnetic engages liquid/gas cylinder pressure built-in sensor, it is characterised in that including housing, rolling wheel, magnetic transmission structure and letter
Number generator, wherein：
The rolling wheel, which is arranged on the enclosure interior, the rolling wheel, is wound with steel cable, has rope outlet on the housing, described
Steel cable is completely in lubricating fluid, and the end of the steel cable extend out to the hull outside by the rope outlet；
The scroll spring for making the steel cable be in tensioning state is provided with the rolling wheel；
The magnetic transmission structure includes the first drive mechanism and the second transmission mechanism；
The housing opens up fluted at the side of the rolling wheel, and first drive mechanism is arranged on the inside grooves simultaneously
It is connected with the rolling wheel axle, covered with dividing plate on the groove, is provided with pressing plate on the outside of the dividing plate, the pressing plate is fixed on institute
State on housing, second drive mechanism be arranged on outside the dividing plate be embedded in the pressing plate and with first drive mechanism
Position is corresponding；
The signal generator is located at the hull outside, is connected with second drive mechanism.
2. magnetic according to claim 1 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that the housing includes
Gland is provided with first housing of upper surface opening, the opening；The rope outlet is located at the side of first housing；Institute
State the lower surface that groove is located at first housing.
3. magnetic according to claim 2 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that the axle of the rolling wheel
One end be arranged on the gland, the other end is arranged at the bottom of the groove.
4. magnetic according to claim 3 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that the scroll spring
Outer ring be fixed on the gland, the inner ring of the scroll spring is fixed on the axle of the rolling wheel.
5. magnetic according to claim 4 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that the scroll spring
It is made up of one or several plane springs or clockwork spring.
6. magnetic according to claim 1 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that first transmission
Structure and the second drive mechanism include disk and the magnet being arranged on inside the disk.
7. magnetic according to claim 6 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that the disk and every
Plate is prepared from using not Magnetized Material.
8. the magnetic engagement liquid/gas cylinder pressure built-in sensor according to any one of claim 1 and 6-7, it is characterised in that
The signal generator is incremental encoder or absolute value type encoder.
9. the magnetic engagement liquid/gas cylinder pressure built-in sensor according to any one of claim 2-5, it is characterised in that institute
Signal generator is stated for incremental encoder or absolute value type encoder.
10. magnetic according to claim 9 engages liquid/gas cylinder pressure built-in sensor, it is characterised in that the dividing plate and institute
State and be provided with seal between groove, the gland and the 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102889268A CN102889268A (en) | 2013-01-23 |
| CN102889268B true CN102889268B (en) | 2017-09-01 |
Family
ID=47532896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN102889268A (en) | 2013-01-23 |
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