CN104677530A - Remote sensing equipment for aerial propeller stress - Google Patents
Remote sensing equipment for aerial propeller stress Download PDFInfo
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- CN104677530A CN104677530A CN201310639084.9A CN201310639084A CN104677530A CN 104677530 A CN104677530 A CN 104677530A CN 201310639084 A CN201310639084 A CN 201310639084A CN 104677530 A CN104677530 A CN 104677530A
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Abstract
The invention relates to remote sensing equipment for aerial propeller stress. The remote sensing equipment comprises a mechanical part and an electric part, wherein the mechanical part is a stress remote sensing plate 1 including a module mounting hole 2, a power supply module mounting slot 3, a ring of wiring slots 4, a bolt mounting hole 5, a weight reducing slot 6 and a dynamic balance bolt mounting hole 7; electrical components comprise a power supply module 8, a signal processing module 9, a voltage stabilizing module 10, an emitter module 11 and a PCB (printed circuit board) 12; the electrical components are mounted in the stress remote sensing plate and are encapsulated to form a stress remote sensing plate assembly; antennas comprise an emitting antenna 13 and a receiving antenna 14 which are in the shapes of circular rings and are space from each other by a distance being smaller than 30 mm; a receiver processes a signal transmitted from the receiving antenna and finally sends data to a computer. The remote sensing equipment is compact in structure, convenient to use, simple to maintain and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of screw propeller stress measurement technology, be particularly useful for being arranged on airscrew propeller hub, adopt radio close coupled stress telemetry to carry out Signal transmissions, to the equipment that the screw propeller stress under rotation status is measured.
Background technology
According to China Administration of Civil Aviation's seaworthiness clause relevant regulations and requirement, a kind of novel airscrew will obtain type certificate, just must carry out the bench test of screw propeller stress measurement.Because screw propeller belongs to revolving part, the technological difficulties of therefore stress measurement are Signal transmissions.Early signal transmission adopts the contact method such as brush ring electrical feedthrough and mercury electrical feedthrough.Brush ring formula electrical feedthrough is brushed the impact of contact between ring, brush ring materials and structures form, easily produces wearing and tearing and larger electrical noise, complex structure.The shortcoming of mercury electrical feedthrough be in High Rotation Speed situation mercury may and rotor between there is space, cause jitter; Mercury disturbance and the oxidation caused because of friction, all can cause contact resistance unstable.Mercury and steam harmful, certain safeguard procedures to be taked during use.
Summary of the invention
The object of the invention is: provide one to utilize radio close coupled stress telemetry to carry out Signal transmissions, be installed on propeller hub, realize the equipment of screw propeller stress measurement under rotation status, to overcome the shortcoming of contact method for transmitting signals.
Technical scheme of the present invention is: airscrew stress telemetry equipment, comprises stress remote measurement dish assembly, antenna and receiver; Stress remote measurement dish assembly is ring-type, is arranged on propeller hub, comprises mechanical parts and electricity piece; Mechanical parts is stress remote measurement dish 1, and it comprises module mounting hole 2, and supply module mounting groove 3, encloses wiring groove 4, bolt mounting holes 5, lightening grooves 6 and transient equilibrium screw mounting hole 7; Electric component comprises supply module 8, signal processing module 9, Voltage stabilizing module 10, transmitter module 11 and PCB 12; Above-mentioned electric component to be arranged in stress remote measurement dish and to be encapsulated, constituting stress remote measurement dish assembly; Antenna comprises emitting antenna 13 and receiving antenna 14, and both are all in circular, and keeps phase mutual edge distance to be less than 30mm; The signal that receiving antenna transmission is come in processes by receiver, finally sends to data acquisition computer.
Strainometer signal on screw propeller is introduced stress telemetry equipment, strainometer signal processes by stress telemetry equipment, be transferred to emitting antenna 13, signal carries with wireless system and is transferred to receiving antenna 14 by emitting antenna 13, final receiving antenna 14 by Signal transmissions to receiver.
Stress remote measurement dish 1 is discoid, and its outside dimension and thickness are determined by installing space; Four module mounting holes 2 are symmetric, and its external diameter and the degree of depth are determined by module size; Two battery settling groove 3 are symmetrical, and its size is determined by battery size; Wiring groove 4 in the form of a ring, is arranged in inside stress remote measurement dish 1.Four bolt mounting holes 5 quantity and position and propeller hub match, and are uniformly distributed, and stress remote measurement dish 1 is connected with propeller hub by these four erection bolts just.Two place's lightening grooves 6 are symmetrically distributed in the both sides of bolt mounting holes 5, and 36 transient equilibrium screw mounting holes 7 are evenly arranged in the outside of stress remote measurement dish 1.
Supply module 8 adopts two joint dry cells, every batteries voltage 3.6V, capacity 5.5Ah, maximum discharge current 1300mA, in real work, for equipment provides the operating voltage being less than 5V; Signal-regulated kinase 9 quantity is two, and each module contains eight port numbers, is amplified by strain signal, provides the excitation of 5V simultaneously to electric bridge; Voltage stabilizing module 10 quantity is one, is 6V direct current, as the power supply of Signal-regulated kinase 9 by the conditioning of the direct current of input; Transmitter module 11 quantity is one, after compliance voltage signal frequency modulation, is transferred to emitting antenna 13.
PCB 12 function has three parts: the first, with two pieces of dry cells for power module of voltage regulation 10 provides input voltage, and controls this loop with an external switch; The second, bridge output signal and bridge road power supply signal are sent into transmitter module 11; 3rd, the fixed resistance in reasonable Arrangement bridge road, forms 2 half-bridges, 5 1/4 bridges jointly with foil gauge.For completing this function, PCB 12 is designed to four layers, and top layer and low layer are specifically designed to the fixed resistance arranged in electric bridge, and two Ceng Weiqiao roads power routing layer, and three layers is signal lead layer.
Emitting antenna 13 is arranged on propeller hub, and rotates with screw propeller; Receiving antenna 14 is arranged on engine crankcase, keeps transfixion.
Advantage of the present invention is: owing to adopting radio close coupled stress remote measurement non-contact type signal transmission method, Signal transmissions precision is high, has good stability, strong interference immunity, overcomes the shortcoming of contact method jitter.The installation on propeller hub of stress remote measurement dish and antenna is with bolts, and reequip simple and convenient, workload is few, and cost is low, overcomes the shortcoming that the repacking of contact method is complicated.Stress remote measurement dish adopts aluminum alloy material manufacture, and quality is light, and cost is low, and its structure is through appropriate design and optimization, and strength test shows the screw propeller spin load that can bear twice, has enough intensity.Whole compact equipment, easy to use, safeguard simple, low cost of manufacture.
Accompanying drawing explanation
Accompanying drawing 1 is the composition schematic diagram of screw propeller stress telemetry equipment;
Accompanying drawing 2 is the front view of stress remote measurement dish assembly;
Accompanying drawing 3 is the rear view of stress remote measurement dish assembly;
Accompanying drawing 4 is transmitting and receiving antenna.
Embodiment
See Fig. 1, airscrew stress telemetry equipment, comprises stress remote measurement dish assembly, antenna and receiver; Stress remote measurement dish assembly is ring-type, is arranged on propeller hub, comprises mechanical parts and electricity piece; Mechanical parts is stress remote measurement dish 1, and it comprises module mounting hole 2, and supply module mounting groove 3, encloses wiring groove 4, bolt mounting holes 5, lightening grooves 6 and transient equilibrium screw mounting hole 7; Electric component comprises supply module 8, signal processing module 9, Voltage stabilizing module 10, transmitter module 11 and PCB 12; Above-mentioned electric component to be arranged in stress remote measurement dish and to be encapsulated, constituting stress remote measurement dish assembly; Antenna comprises emitting antenna 13 and receiving antenna 14, and both are all in circular, and keeps phase mutual edge distance to be less than 30mm; The signal that receiving antenna transmission is come in processes by receiver, finally sends to data acquisition computer.
See Fig. 2 and Fig. 3, mechanical parts-stress remote measurement dish 1 is discoid, and its outside dimension and thickness are determined by installing space.Four module mounting holes 2 are symmetric, and its external diameter and the degree of depth are determined by module size.Two battery settling groove 3 are symmetrical, and its size is determined by battery size.Wiring groove 4 in the form of a ring, is arranged in inside stress remote measurement dish.Four bolt mounting holes 5 quantity and position and propeller hub match, and are uniformly distributed, and stress remote measurement dish 1 is connected with propeller hub by these four erection bolts just.Two place's lightening grooves 6 are symmetrically distributed in the both sides of bolt mounting holes 5, and 36 transient equilibrium screw mounting holes 7 are evenly arranged in the outside of stress remote measurement dish 1.
Supply module 8 adopts two joint dry cells, every batteries voltage 3.6V, capacity 5.5Ah, maximum discharge current 1300mA, in real work, for equipment provides the operating voltage being less than 5V.Signal-regulated kinase 9 quantity is two, and each module contains eight port numbers, is amplified by strain signal, provides the excitation of 5V simultaneously to electric bridge.Voltage stabilizing module 10 quantity is one, is 6V direct current, as the power supply of Signal-regulated kinase 9 by the conditioning of the direct current of input.Transmitter module 11 quantity is one, after compliance voltage signal frequency modulation, is transferred to emitting antenna 13.
PCB 12 function mainly contains three parts: the first, with two pieces of dry cells for power module of voltage regulation 10 provides input voltage, and controls this loop with an external switch; The second, bridge output signal and bridge road power supply signal are sent into transmitter module; 3rd, the fixed resistance in reasonable Arrangement bridge road, forms 2 half-bridges, 5 1/4 bridges jointly with foil gauge.For completing above function, pcb board is designed to four layers, and top layer and low layer are specifically designed to the fixed resistance arranged in electric bridge, and two Ceng Weiqiao roads power routing layer, and three layers is signal lead layer.
Above-mentioned two batteries, four modules and circuit board are arranged in stress remote measurement dish 1 symmetrically, and with front and rear cover plate encapsulation, just constitute stress remote measurement dish assembly.
See Fig. 4, antenna comprises emitting antenna 13 and receiving antenna 14.According to the free space of screw propeller, emitting antenna 13 is the annular that diameter is identical with receiving antenna 14, and distance is for being greater than 30mm between the two, and aerial signal frequency range is 200MHz to 300MHz.Tours antenna outer shroud be a closed ring, width is about 1.5cm, can improve electromagnetic compatible environment.Inner ring is work antenna, and width is about 1mm.The gap of inner and outer ring is about 1mm.Emitting antenna 13 and receiving antenna 14 make with circuit board material, in order to proof strength and installation, and specialized designs antenna holder.Emitting antenna 13 is fixed on propeller hub by four erection bolts, rotates with screw propeller.Receiving antenna 14 is fixed on the casing of engine by switching support.
Claims (7)
1. airscrew stress telemetry equipment, is characterized in that: described stress telemetry equipment comprises stress remote measurement dish assembly, antenna and receiver;
Stress remote measurement dish assembly is ring-type, is arranged on propeller hub, comprises mechanical parts and electricity piece; Mechanical parts is stress remote measurement dish (1), and it comprises module mounting hole (2), supply module mounting groove (3), circle wiring groove (4), bolt mounting holes (5), lightening grooves (6) and transient equilibrium screw mounting hole (7); Electric component comprises supply module (8), signal processing module (9), Voltage stabilizing module (10), transmitter module (11) and PCB (12); Above-mentioned electric component to be arranged in stress remote measurement dish and to be encapsulated, constituting stress remote measurement dish assembly;
Antenna comprises emitting antenna (13) and receiving antenna (14), and both are all in circular, and keeps phase mutual edge distance to be less than 30mm;
The signal that receiving antenna transmission is come in processes by receiver, finally sends to data acquisition computer.
2. airscrew stress telemetry equipment as claimed in claim 1, it is characterized in that: the strainometer signal on screw propeller is introduced stress telemetry equipment, strainometer signal processes by stress telemetry equipment, be transferred to emitting antenna (13), signal carries with wireless system and is transferred to receiving antenna (14) by emitting antenna (13), final receiving antenna (14) by Signal transmissions to receiver.
3. airscrew stress telemetry equipment as claimed in claim 1, is characterized in that: stress remote measurement dish (1) is for discoid, and its outside dimension and thickness are determined by installing space; Four module mounting holes (2) are symmetric, and its external diameter and the degree of depth are determined by module size; Two battery settling groove (3) are symmetrical, and its size is determined by battery size; Wiring groove (4) in the form of a ring, is arranged in stress remote measurement dish (1) inner side.Four bolt mounting holes (5) quantity and position and propeller hub match, and are uniformly distributed, and stress remote measurement dish (1) is connected with propeller hub by these four erection bolts just.Two place's lightening grooves (6) are symmetrically distributed in the both sides of bolt mounting holes (5), and 36 transient equilibrium screw mounting holes (7) are evenly arranged in the outside of stress remote measurement dish (1).
4. airscrew stress telemetry equipment as claimed in claim 1, is characterized in that: supply module (8) adopts two joint dry cells, every batteries voltage 3.6V, capacity 5.5Ah, maximum discharge current 1300mA, in real work, for equipment provides the operating voltage being less than 5V; Signal-regulated kinase (9) quantity is two, and each module contains eight port numbers, is amplified by strain signal, provides the excitation of 5V simultaneously to electric bridge; Voltage stabilizing module (10) quantity is one, is 6V direct current, as the power supply of Signal-regulated kinase (9) by the conditioning of the direct current of input; Transmitter module (11) quantity is one, after compliance voltage signal frequency modulation, is transferred to emitting antenna (13).
5. airscrew stress telemetry equipment as claimed in claim 1, it is characterized in that: PCB (12) function has three parts: first, be that power module of voltage regulation (10) provides input voltage with two pieces of dry cells, and with an external switch, this loop controlled; The second, bridge output signal and bridge road power supply signal are sent into transmitter module (11); 3rd, the fixed resistance in reasonable Arrangement bridge road, forms 2 half-bridges, 5 1/4 bridges jointly with foil gauge.
6. the airscrew stress telemetry equipment as described in claim 1 or 5, it is characterized in that: PCB (12) is designed to four layers, top layer and low layer are specifically designed to the fixed resistance arranged in electric bridge, and two Ceng Weiqiao roads power routing layer, and three layers is signal lead layer.
7. airscrew stress telemetry equipment as claimed in claim 1, is characterized in that: emitting antenna (13) is arranged on propeller hub, and rotates with screw propeller; Receiving antenna (14) is arranged on engine crankcase, keeps transfixion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639084.9A CN104677530B (en) | 2013-11-28 | 2013-11-28 | Airscrew stress remote-measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639084.9A CN104677530B (en) | 2013-11-28 | 2013-11-28 | Airscrew stress remote-measuring equipment |
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| Publication Number | Publication Date |
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| CN104677530A true CN104677530A (en) | 2015-06-03 |
| CN104677530B CN104677530B (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310639084.9A Active CN104677530B (en) | 2013-11-28 | 2013-11-28 | Airscrew stress remote-measuring equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005221410A (en) * | 2004-02-06 | 2005-08-18 | Honda Motor Co Ltd | Pressure distribution measuring system |
| CN101498575A (en) * | 2007-12-11 | 2009-08-05 | 汉密尔顿毕克布兰德斯有限公司 | Apparatus for measuring stresses on rotating blades and methods thereof |
| CN103048077A (en) * | 2012-12-21 | 2013-04-17 | 中国船舶重工集团公司第七一九研究所 | Dynamic stress monitoring device of propeller main shaft |
| CN203224324U (en) * | 2012-12-21 | 2013-10-02 | 中国船舶重工集团公司第七一九研究所 | Propeller main shaft dynamic stress monitoring device |
| CN103398812A (en) * | 2013-07-25 | 2013-11-20 | 中国航天空气动力技术研究院 | Propeller coaxial force measuring device |
-
2013
- 2013-11-28 CN CN201310639084.9A patent/CN104677530B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005221410A (en) * | 2004-02-06 | 2005-08-18 | Honda Motor Co Ltd | Pressure distribution measuring system |
| CN101498575A (en) * | 2007-12-11 | 2009-08-05 | 汉密尔顿毕克布兰德斯有限公司 | Apparatus for measuring stresses on rotating blades and methods thereof |
| CN103048077A (en) * | 2012-12-21 | 2013-04-17 | 中国船舶重工集团公司第七一九研究所 | Dynamic stress monitoring device of propeller main shaft |
| CN203224324U (en) * | 2012-12-21 | 2013-10-02 | 中国船舶重工集团公司第七一九研究所 | Propeller main shaft dynamic stress monitoring device |
| CN103398812A (en) * | 2013-07-25 | 2013-11-20 | 中国航天空气动力技术研究院 | Propeller coaxial force measuring device |
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| CN104677530B (en) | 2017-09-22 |
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