CN109373960B - Redundancy angular displacement detection device and installation method - Google Patents
Redundancy angular displacement detection device and installation method Download PDFInfo
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- CN109373960B CN109373960B CN201811479473.9A CN201811479473A CN109373960B CN 109373960 B CN109373960 B CN 109373960B CN 201811479473 A CN201811479473 A CN 201811479473A CN 109373960 B CN109373960 B CN 109373960B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention belongs to the technical field of design of an angular position detection mechanism of an aircraft control system, and particularly relates to a redundancy angular displacement detection device and an installation method. The mechanical structure of the common redundancy sensor has the defects of large volume, complex structure, complex zero adjustment, difficult realization of independent debugging and maintenance and the like. The invention comprises a mounting plate which is sleeved on a rotating shaft and is in clearance fit with the rotating shaft, the mounting plate is fixedly connected with an external structure, one end of the mounting plate is provided with a plurality of angular displacement sensors, and a rotating shaft of each angular displacement sensor penetrates through the mounting plate and is fixedly connected with a clearance elimination gear; a conical surface center wheel is fixed on the rotating shaft and is meshed with the anti-backlash gear. The multi-redundancy angular displacement detection device has the advantages that the rotating shaft can penetrate through the center of the multi-redundancy angular displacement detection device, the two ends of the rotating shaft can be connected with an external mechanism, the zero position can be independently adjusted firstly during installation, and then the rotating shaft is integrally arranged on a shaft to be detected, so that the multi-redundancy angular displacement detection device is small in size, light in weight, convenient to debug, high in precision, good in consistency and high in reliability.
Description
Technical Field
The invention belongs to the technical field of design of an angular position detection mechanism of an aircraft control system, and particularly relates to a redundancy angular displacement detection device and an installation method.
Background
In the fly-by-wire flight control system of the airplane, in order to detect the requirement of angular displacement signals of the control system, angular displacement detection devices are arranged, and are used for detecting mechanical angular displacement signals for controlling the airplane and converting the mechanical angular displacement signals into electric signals as flight control instructions to be transmitted to the flight control system. In order to improve the reliability and the safety of the control system, the airplane control system is inevitably designed by a redundancy sensor, and the commonly used redundancy sensor assembly has the defects of large volume, complex structure, difficult zero adjustment in the installation process, larger signal consistency error between redundancies, inconvenient maintenance and the like. Simultaneously in order to satisfy just, the mechanical interconnection between the copilot drives, need pass through etc. and need suit multiunit redundancy sensor assembly on waiting to detect the axis of rotation that detects from redundancy sensor assembly center with the manipulation axis of rotation that detects, these all become the problem that aircraft manipulation redundancy angle displacement detection mechanism needs to solve.
Disclosure of Invention
The purpose of the invention is: aiming at the defects of the existing angular displacement detection mechanism of the airplane control system, the redundancy angular displacement detection device and the installation method are provided, so that the defects of large volume, complex structure, difficult zero adjustment in the installation process, large signal consistency error between redundancies, inconvenient maintenance and the like of the existing sensor mechanism are overcome, and the airplane control quality, reliability and safety are improved.
The technical scheme of the invention is as follows: a redundant angular displacement detection device comprises a mounting plate which is sleeved on a rotating shaft and is in clearance fit with the rotating shaft, the mounting plate is fixedly connected with an external structure, one end of the mounting plate is provided with a plurality of angular displacement sensors, the angular displacement sensors are mounted on the mounting plate, and the rotating shaft of each angular displacement sensor penetrates through the mounting plate and is fixedly connected with an anti-backlash gear; a conical surface center wheel is fixed on the rotating shaft and is meshed with the anti-backlash gear.
The conical surface center wheel is connected with the conical surface expansion sleeve through a screw and locks the rotating shaft.
The anti-backlash gear is provided with an integrated fixing clamp, and the fixing clamp is locked with the rotating shaft.
The mounting plate is provided with an RVDT mounting hole for mounting the angular displacement sensor, a mounting hole connected with an external structure and a central through hole of the rotating shaft 1.
The conical surface center wheel is provided with a conical surface matched with the conical surface expansion sleeve.
The number of the angular displacement sensors is 4.
Firstly, sleeving an installation plate 5 and a conical surface center wheel 3 on a rotating shaft 1, and temporarily fixing the circumferential position of the conical surface center wheel 3 relative to the installation plate 5; then an angular displacement sensor 6 penetrates through the mounting plate 5 and the anti-backlash gear 4 to be primarily fixed with the mounting plate 5, and the angular displacement sensor 6 is fixedly connected with the anti-backlash gear 4; placing an anti-backlash gear 4 to be meshed with the conical surface central wheel 3; adjusting the angular displacement sensor 6 to reach an electric zero position, and fixedly connecting the angular displacement sensor 6 to the mounting plate 5; the mounting plate 5 is fixed on an external structure, so that the conical surface center wheel 3 is firmly connected with the rotating shaft 1, and the temporary fixation of the circumferential position of the conical surface center wheel relative to the mounting plate is cancelled.
The invention has the advantages that: the redundancy sensor assembly has the advantages of simple structure, convenience in installation and zero adjustment, high precision, good signal consistency among redundancies and convenience in maintenance; the multi-redundancy angular displacement detection device has the advantages that the rotating shaft can penetrate through the center of the multi-redundancy angular displacement detection device, both ends of the rotating shaft can be connected with an external mechanism, the zero position of the whole assembly can be adjusted when the multi-redundancy angular displacement detection device is installed, then the rotating shaft to be detected is installed on the whole, and multiple groups of multi-redundancy angular displacement detection devices can be sleeved on the rotating shaft to be detected in the angular position.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-redundancy angular displacement detection apparatus of the present invention;
FIG. 2 is a schematic view of a mounting plate;
FIG. 3 is a schematic view of a cone center wheel;
FIG. 4 is a schematic view of a conical expansion sleeve;
wherein: the device comprises a rotating shaft 1, a conical surface expansion sleeve 2, a conical surface center wheel 3, a clearance eliminating gear 4, a mounting plate 5, an angular displacement sensor 6, a fixing clamp 7, a mounting hole 5a-RVDT, a central through hole 5b, a mounting hole 5c, a screw hole 2a, a conical surface 2b, a cylindrical hole surface 2c, an expansion inclined surface 3a, a threaded hole 3b, a central gear 3c and an inner hole 3 d.
Detailed Description
Referring to the attached drawings 1-4, four angular displacement sensors, a mounting plate, four groups of anti-backlash gears, a conical surface center wheel and a conical surface expansion sleeve.
The center of the mounting plate is provided with a round through hole, and four angular displacement sensor mounting holes are circumferentially arranged around the central hole; the mounting plate is provided with a screw mounting through hole.
The four angular displacement sensors and the four groups of anti-backlash gears respectively form four anti-backlash gear angular displacement sensor assemblies, and each group of anti-backlash gears is fixedly connected with the angular displacement sensor.
The four anti-backlash gear angular displacement sensor components are respectively fixed in angular displacement sensor mounting holes formed in the mounting plate.
The center hole of the left end of the conical surface center wheel is a conical surface hole, the left outer end face of the conical surface center wheel is a flange face, a threaded hole is formed in the flange face, the center hole of the right end is a through hole, and the outer circumference of the right end is provided with a gear.
The central hole of the conical surface expansion sleeve is a through hole, the left outer end face of the conical surface expansion sleeve is a flange face, and the outer circumference of the conical surface expansion sleeve is a conical face.
The outer circumference of the conical surface expansion sleeve is in contact taper fit with the cylindrical surface of the conical surface hole in the conical surface center wheel through a conical surface, a gap is reserved between the right end surface of the flange surface of the conical surface expansion sleeve and the left end surface of the flange surface of the conical surface center wheel after the conical surface expansion sleeve is matched with the cylindrical surface, and a screw passes through a through hole of the flange surface of the conical surface expansion sleeve and is connected with a threaded hole in the flange surface.
The gears on the central wheel are simultaneously meshed with the message gears on the four anti-backlash gear angular displacement sensor assemblies.
The central through hole of the conical surface expansion sleeve is in sliding clearance fit with the rotating shaft.
The rotating shaft can penetrate through a central through hole of the mounting plate, penetrate through the central holes of the conical surface central wheel and the conical surface expansion sleeve and then are connected with other components, and the conical surface central wheel and the conical surface expansion sleeve are firmly connected with the rotating shaft by screwing screws.
The angular displacement sensor assembly with four anti-backlash gears is first fixed to the mounting plate, the gears on the central wheel assembly are meshed with the four anti-backlash gears to make the central wheel immobile, the position sensor is fixed and connected to the position sensor, the assembly is then sleeved onto the rotating shaft, the mounting plate is fixed to the outer support casing with screws, and the screws are then screwed to make the central wheel assembly and the rotating shaft connected firmly.
Firstly, sleeving an installation plate and a conical surface center wheel on a rotating shaft, and temporarily fixing the circumferential position of the conical surface center wheel relative to the installation plate; then the angular displacement sensor passes through the mounting plate and the anti-backlash gear to be primarily fixed with the mounting plate, and the angular displacement sensor is fixedly connected with the anti-backlash gear; placing an anti-backlash gear to be meshed with the conical surface central wheel; adjusting the angular displacement sensor to reach an electric zero position, and fixedly connecting the angular displacement sensor to the mounting plate; and fixing the mounting plate on the external structure, firmly connecting the conical surface center wheel with the rotating shaft, and removing the mounting plate from being fixed on the external structure, so that the conical surface center wheel is firmly connected with the rotating shaft, and the temporary fixation of the circumferential position of the conical surface center wheel relative to the mounting plate is removed.
Claims (4)
1. A method for installing a redundancy angular displacement detection device is characterized in that: the redundancy angular displacement detection device is used for detecting the rotation angle of the rotating shaft (1), and comprises a mounting plate (5) which is sleeved on the rotating shaft (1) and is in clearance fit with the rotating shaft, the mounting plate (5) is fixedly connected with an external structure, one end of the mounting plate (5) is provided with a plurality of angular displacement sensors (6), and the rotating shaft of each angular displacement sensor (6) penetrates through the mounting plate (5) and is fixedly connected with the anti-backlash gear (4); a conical surface center wheel (3) is fixed on the rotating shaft (1) and is meshed with the anti-backlash gear (4); the mounting plate (5) is provided with an RVDT mounting hole (5a) for mounting the angular displacement sensor (6), a mounting hole (5c) connected with an external structure and a central through hole (5b) of the rotating shaft (1); the conical surface central wheel (3) is connected with the conical surface expansion sleeve (2) through a screw and locks the rotating shaft (1);
firstly, sleeving an installation plate (5) and a conical surface center wheel (3) on a rotating shaft (1) and temporarily fixing the circumferential position of the conical surface center wheel (3) relative to the installation plate (5); then an angular displacement sensor (6) penetrates through the mounting plate (5) and the anti-backlash gear (4) to be primarily fixed with the mounting plate (5), and the angular displacement sensor (6) is fixedly connected with the anti-backlash gear (4); the anti-backlash gear (4) is placed to be meshed with the conical surface central wheel (3); adjusting the angular displacement sensor (6) to reach an electric zero position, and fixedly connecting the angular displacement sensor (6) to the mounting plate (5); the mounting plate (5) is fixed on an external structure, so that the conical surface center wheel (3) is firmly connected with the rotating shaft (1) and the temporary fixation of the circumferential position of the conical surface center wheel (3) relative to the mounting plate (5) is cancelled.
2. The method of installing a redundant angular displacement sensing device of claim 1, wherein: the anti-backlash gear (4) is provided with an integrated fixing clamp (7), and the fixing clamp (7) is locked with the rotating shaft.
3. The method of installing a redundant angular displacement sensing device of claim 1, wherein: the conical surface center wheel (3) is provided with a conical surface matched with the conical surface expansion sleeve (2).
4. The method of installing a redundant angular displacement sensing device of claim 1, wherein: the number of the angular displacement sensors (6) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811479473.9A CN109373960B (en) | 2018-12-05 | 2018-12-05 | Redundancy angular displacement detection device and installation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811479473.9A CN109373960B (en) | 2018-12-05 | 2018-12-05 | Redundancy angular displacement detection device and installation method |
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| CN109373960A CN109373960A (en) | 2019-02-22 |
| CN109373960B true CN109373960B (en) | 2021-09-14 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648481B (en) * | 2020-12-11 | 2022-08-30 | 兰州飞行控制有限责任公司 | Zero adjustment device and method for angular displacement sensor |
| CN112762816B (en) * | 2020-12-25 | 2022-07-05 | 兰州飞行控制有限责任公司 | Redundancy angular displacement sensor with self-isolation blocking fault and use method |
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| CN109373960A (en) | 2019-02-22 |
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