CN117870603A - Tandem gear transmission wide-range angular displacement sensor - Google Patents
Tandem gear transmission wide-range angular displacement sensor Download PDFInfo
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- CN117870603A CN117870603A CN202311843960.XA CN202311843960A CN117870603A CN 117870603 A CN117870603 A CN 117870603A CN 202311843960 A CN202311843960 A CN 202311843960A CN 117870603 A CN117870603 A CN 117870603A
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- displacement sensor
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 64
- 230000005540 biological transmission Effects 0.000 title claims abstract description 61
- 230000001681 protective effect Effects 0.000 claims description 18
- 230000005389 magnetism Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
- G01D5/04—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means using levers; using cams; using gearing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The application provides a serial gear drive wide range angular displacement sensor belongs to sensor technical field, includes: the sensor comprises a transmission mechanism for sensing the measured angle, a mounting flange for mounting and fixing the sensor, an angular displacement mechanism for converting the measured angle into a voltage signal and outputting the voltage signal and a cylindrical gear for transmitting the measured angle from the transmission mechanism to the angular displacement mechanism, wherein the transmission mechanism is sealed in a cavity of the mounting flange, the transmission mechanism is provided with a sleeve fixedly welded with the angular displacement mechanism and an anti-backlash gear meshed with the cylindrical gear, and the anti-backlash gear is matched with the cylindrical gear in an inner tooth and an outer tooth mode. The sensor realizes accurate transmission of angles through meshing of the cylindrical gear and the anti-backlash gear of the transmission mechanism. The gear is meshed by internal and external teeth. Compared with the parallel gear transmission, the external teeth are meshed with the external teeth, so that the volume and the weight of the sensor are greatly reduced.
Description
Technical Field
The application belongs to the technical field of sensors, and particularly relates to a serial gear transmission wide-range angular displacement sensor.
Background
As mechanical transmission systems on aircraft are increasingly replaced by electrical control systems, resolver-type angular displacement sensors are also becoming increasingly popular in aircraft systems. They provide accurate angular position information for the flight control system.
Because the theoretical measuring range of the conventional rotary transformer type angular displacement sensor is only +/-45 degrees, the conventional rotary transformer type angular displacement sensor is generally used in a stroke range of +/-40 degrees only in order to ensure the linearity of the output of the sensor. However, in the measurement of the movement angle of the throat of the nozzle of the aeroengine, the angle measurement range is required to reach +/-65 degrees, and the upper limit of the traditional measurement is far exceeded. The improved large-range dual-redundancy angular displacement sensor currently applied to the field of aviation generally adopts a parallel gear transmission structure (see fig. 10), namely a common input shaft of one sensor drives two single-redundancy sensitive component rotating shafts to rotate through the meshing of external teeth and external teeth of a gear, so that independent output of two channels is realized. And the range is expanded through the gear transmission ratio. This "parallel" configuration results in a large product volume and mass due to the fact that the two sensitive components are not coaxial and are placed side by side in the radial direction of the sensor. In addition, six high-temperature-resistant and high-precision miniature bearings are required to be arranged for three rotating shafts of the product, so that the cost is high, and the cost is about 20% of the total cost.
Disclosure of Invention
The utility model aims at providing a serial gear drive wide range angular displacement sensor, this sensor compact structure, light in weight, precision are high, with low costs, be convenient for the assembly.
In order to achieve the above purpose, the present application provides the following technical scheme, provides a tandem gear transmission wide range angular displacement sensor, the sensor includes: a transmission mechanism for sensing the measured angle, a mounting flange for mounting and fixing the sensor, an angular displacement mechanism for converting the measured angle into a voltage signal and outputting the voltage signal, and a cylindrical gear for transmitting the measured angle from the transmission mechanism to the angular displacement mechanism,
the angular displacement mechanism is welded and fixed with the transmission mechanism and the mounting flange respectively,
the transmission mechanism is sealed in the cavity of the mounting flange and is provided with a sleeve fixedly welded with the angular displacement mechanism and an anti-backlash gear meshed with the cylindrical gear, and the anti-backlash gear is matched with the cylindrical gear in an inner tooth and an outer tooth mode.
The serial gear transmission wide-range angular displacement sensor that this application provided still has such characteristic, drive mechanism still includes the input shaft, is used for spacing two first bearings of fixing in the sleeve with the input shaft and is used for with input shaft and clearance elimination gear interference fit's cylindric lock.
The serial gear transmission wide-range angular displacement sensor that this application provided still has such characteristic, the sleeve is equipped with and is used for conveniently eliminating clearance gear and cylindrical gear engagement's operating window, be used for with angular displacement mechanism cup joint first hole, with the sleeve step face of input shaft terminal surface butt of input shaft, be used for spacing fixed input shaft's hole and annular groove, place hole circlip in the annular groove, hole circlip is used for preventing the input shaft from moving in axial cluster.
The serial gear transmission wide-range angular displacement sensor provided by the application also has the characteristic that a bushing is arranged between the two first bearings, and the first bearings are in interference fit with the input shaft.
The serial gear transmission wide-range angular displacement sensor provided by the application also has the characteristics that the anti-backlash gear comprises a main tooth, an auxiliary tooth, a through hole for pressing in a cylindrical pin and a mounting hole matched with an input shaft.
The serial gear transmission wide-range angular displacement sensor provided by the application also has the characteristics that the angular displacement mechanism comprises a protective shell welded and fixed with the transmission mechanism and the mounting flange, two groups of sensitive components coaxially arranged in the protective shell, a magnetism isolating sleeve arranged between the two groups of sensitive components, a rotating shaft fixedly connected with the cylindrical gear and an aviation socket for outputting voltage signals,
two groups of rotor iron cores are arranged on the rotating shaft, and the rotor iron cores are coaxially placed in an inner hole of the sensitive component through limiting of two second bearings.
The serial gear transmission wide-range angular displacement sensor that this application provided still has such characteristic, angular displacement mechanism still includes the clamping ring and sets up the apron directly over the clamping ring, the clamping ring be equipped with the internal thread complex external screw thread of protecting crust, the clamping ring is used for locking the fastening in the protecting crust with two sets of sensitive subassemblies and magnetism isolating sleeve in the axial.
The serial gear transmission wide-range angular displacement sensor provided by the application also has the characteristics that the sensitive component comprises a stator winding, a U-shaped groove for placing the stator winding and an inward-sinking type bearing mounting hole site.
The serial gear transmission wide-range angular displacement sensor that this application provided still has such characteristic, the mounting flange include with the mounting flange terminal surface of the protection shell second step face butt of protection shell, with the first hole of the mounting flange of the outer circle of protection shell second cup joint and be used for the mounting flange second hole that the sleeve passed.
The serial gear transmission wide-range angular displacement sensor provided by the application also has the characteristic that the hole spacing of the hole and the first inner hole is the same as the hole spacing of the second inner hole of the mounting flange and the first inner hole of the mounting flange.
Advantageous effects
The serial gear transmission wide-range angular displacement sensor provided by the application realizes accurate transmission of angles through the meshing of the cylindrical gear arranged at the tail end of the integrated rotating shaft and the anti-backlash gear of the transmission mechanism. The gear is meshed by internal and external teeth. Compared with the parallel gear transmission, the external teeth are meshed with the external teeth, so that the volume and the weight of the sensor are greatly reduced.
The two groups of sensitive components 9 of the serial gear transmission wide-range angular displacement sensor provided by the application are coaxially placed up and down, and share the integrated rotating shaft 6, so that serial structural design is realized. Compared with the traditional parallel structure design, one rotating shaft, one gear and two pairs of bearings are omitted, so that the cost is saved, the reliability of a product is improved, and the sensor is more compact in design.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of a tandem gear transmission wide range angular displacement sensor according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of gear engagement of a tandem gear drive wide range angular displacement sensor according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural view of an angular displacement mechanism according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a sensing component according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural view of a sleeve according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a backlash eliminating gear according to an embodiment of the present disclosure;
fig. 8 is a schematic structural view of a spur gear according to an embodiment of the present disclosure;
FIG. 9 is a schematic structural view of a mounting flange according to an embodiment of the present disclosure;
figure 10 is a schematic diagram of the gear mesh of a prior art parallel gear driven wide range angular displacement sensor,
wherein, 1, a transmission mechanism; 2. a mounting flange; 2a, installing the end face of the flange; 2b, installing an inner hole of the flange; 2c, 3, angular displacement mechanism; 4. a cylindrical gear; 4a, hole edges; 5. aviation socket; 6. a rotating shaft; 7. a protective shell; 7a, protecting a first step surface of the shell; 7b, protecting a second step surface of the shell; 7c, protecting the first outer circle of the shell; 7d, protecting the second excircle of the shell; 8. a magnetism isolating sleeve; 9. a sensitive component; 9a, U-shaped grooves; 9b, an embedded bearing mounting hole site; 9c, stator windings; 10. a compression ring; 11. a cover plate; 12. a second bearing; 13. a rotor core; 14. an input shaft; 14a, an input shaft end face; 15. circlips for holes; 16. a first bearing; 17. a sleeve; 17a, a first inner hole; 17b, sleeve step surface; 17c, holes; 17d, an annular groove; 17e, an operation window; 17f, end faces; 18. an anti-backlash gear; 18a, main teeth; 18b, secondary teeth; 18c; a through hole; 18d, mounting holes; 19. a cylindrical pin; 20. a bushing.
Detailed Description
The present application is further described in detail below with reference to the drawings and examples, but it should be understood that these embodiments are not limited to the present application, and functional, method, or structural equivalents and alternatives according to these embodiments are within the scope of protection of the present application by those skilled in the art.
In the description of the embodiments of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description created in this application, unless otherwise indicated, the meaning of "a plurality" is two or more.
The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the creation of this application may be understood by those of ordinary skill in the art by specific circumstances.
As shown in fig. 1-9, a tandem geared wide range angular displacement sensor is provided, the sensor comprising: the sensor comprises a transmission mechanism 1 for sensing the measured angle, a mounting flange 2 for mounting and fixing the sensor, an angular displacement mechanism 3 for converting the measured angle into a voltage signal and outputting the voltage signal and a cylindrical gear 4 for transmitting the measured angle from the transmission mechanism 1 to the angular displacement mechanism 3, wherein the angular displacement mechanism 3 is respectively welded and fixed with the transmission mechanism 1 and the mounting flange 2, the transmission mechanism 1 is sealed in a cavity of the mounting flange 2, the transmission mechanism 1 is provided with a sleeve 17 welded and fixed with the angular displacement mechanism 3 and an anti-backlash gear 18 meshed with the cylindrical gear 4, and the anti-backlash gear 18 is meshed with the cylindrical gear 4 in an internal and external tooth mode.
In the above embodiment, the accurate transmission of the angle is realized by the engagement of the cylindrical gear 4 arranged at the end of the integrated rotating shaft 6 and the anti-backlash gear 18 of the transmission mechanism 1. The gear is meshed by internal and external teeth. Compared with the parallel gear transmission, the external teeth are meshed with the external teeth, so that the volume and the weight of the sensor are greatly reduced. The mounting flange 2 is used for providing a mounting and fixing interface of the whole sensor, sealing the transmission mechanism 1 in a cavity of the mounting flange 2, and preventing foreign matters from entering the transmission mechanism 1 to cause clamping stagnation of the input shaft 14. The gear ratio is adjusted by changing the number of teeth of the cylindrical gear 4 and the anti-backlash gear 18, so that the measuring range of the sensor is adjusted and expanded according to the use requirement of the sensor. Assuming that the measuring range of the sensor is θ, the rotation angle of the sensitive component 9 is γ, the number of teeth of the anti-backlash gear 18 is Z1, and the number of teeth of the cylindrical gear 4 is Z2. When Z1 is larger than Z2, the range of the sensor is expanded.
θ＝γ*Z1/Z2。
In some embodiments, the transmission mechanism 1 further includes an input shaft 14, two first bearings 16 for limiting and fixing the input shaft 14 in the sleeve 17, and a cylindrical pin 19 for interference fit between the input shaft 14 and the anti-backlash gear 18.
In some embodiments, the sleeve 17 is provided with an operation window 17e for facilitating the engagement of the backlash eliminating gear 18 with the cylindrical gear 4, a first inner hole 17a for sleeving with the angular displacement mechanism 3, a sleeve step surface 17b abutting against the input shaft end surface 14a of the input shaft 14, a hole 17c for limiting and fixing the input shaft, and an annular groove 17d, wherein a hole circlip 15 is placed in the annular groove 17d, and the hole circlip 15 is used for preventing the input shaft 14 from moving in a serial manner in the axial direction.
In the above embodiment, the sleeve 17 of the transmission mechanism 1 is provided with the operation window 17e for meshing the anti-backlash gear 18 with the cylindrical gear 4, so that the main teeth 18a and the auxiliary teeth 18b of the anti-backlash gear 18 mesh with the cylindrical gear 4 after generating torsional moment in a dislocation manner, and further, the gear transmission gap is eliminated, and accurate transmission of angles is realized. The hole 17c for installing the bearing 16 and the first inner hole 17a for installing the whole transmission mechanism 1 are arranged, and the two holes are clamped and processed at one time, so that the hole spacing between the two holes is effectively ensured. And the aperture tolerance of micron level is achieved by precision machining. Thereby effectively ensuring that the center distance of the anti-backlash gear 18 meshed with the cylindrical gear 4 is more approximate to the theoretical design value. The service life of the gear and the running stability are improved.
In some embodiments, a bushing 20 is provided between two of the first bearings 16, the first bearings 16 being an interference fit with the input shaft 14.
In some embodiments, the anti-backlash gear 18 includes a main tooth 18a, a sub tooth 18b, a through hole 18c for pressing in the cylindrical pin 9, and a mounting hole 18d for mating with the input shaft 14.
In some embodiments, the angular displacement mechanism 3 comprises a protective shell 7 welded and fixed with the transmission mechanism 1 and the mounting flange 2, two groups of sensitive components 9 coaxially arranged in the protective shell 7, a magnetism isolating sleeve 8 arranged between the two groups of sensitive components 9, a rotating shaft 6 fixedly connected with the cylindrical gear 4 and an aviation socket 5 for outputting voltage signals,
two groups of rotor iron cores 13 are arranged on the rotating shaft 6, and the rotor iron cores 13 are coaxially placed in the inner holes of the sensitive components 9 through the limiting of the two second bearings 12.
In the above embodiment, the structural design and electrical parameters of the two groups of sensitive components 9 are identical, and the two groups of sensitive components are interchangeable and the same as the spatial relative positions between the rotor cores 13. The high consistency and symmetry design effectively ensures the consistency of the two paths of output characteristics of the sensor from the root and reduces the workload of subsequent product debugging to the maximum extent. Meanwhile, the modularized design of the product is realized, and the product development period and the development cost are shortened.
In some embodiments, the angular displacement mechanism 3 further includes a pressing ring 10 and a cover plate 11 disposed directly above the pressing ring 10, where the pressing ring 10 is provided with external threads matching with the internal threads of the protecting shell 7, and the pressing ring 10 is used to lock and fasten the two sets of sensitive components 9 and the magnetism isolating sleeve 8 in the protecting shell 7 in an axial direction.
In some embodiments, the sensitive component 9 includes a stator winding 9c, a U-shaped groove 9a for placing the stator winding 9c, and an invaginated bearing mounting hole 9b.
In the above embodiment, the sensor sensitive component 9 is provided with an invaginated rather than an epitaxial invaginated bearing mounting hole 9b, and a U-shaped groove 9a is provided for placing the coil of the stator winding 9 c. The stator winding 9c adopts a 'dwarf type' structural design, and the thickness is reduced as much as possible on the premise of ensuring the output voltage. The measures furthest utilize the inner space of the assembly, can greatly shorten the axial length of the sensitive assembly, make up the axial length extension brought by the serial structural design and the assembly of the transmission mechanism 1, and effectively control the height of the whole sensor in the axial direction.
In some embodiments, the mounting flange 2 includes a mounting flange end face 2a abutting against a second step face 7b of the protecting shell 7, a mounting flange first inner hole 2b sleeved with a second outer circle 7d of the protecting shell, and a mounting flange second inner hole 2c for the sleeve 17 to pass through.
In some embodiments, the hole 17c and the first bore 17a have the same hole spacing as the mounting flange second bore 2c and the mounting flange first bore 2 b. The theoretical design value of the hole spacing is equal to the center distance of the anti-backlash gear 18 after being meshed with the cylindrical gear 4.
The sensor assembly steps provided by the foregoing embodiments are as follows:
s1, pressing two first bearings 16 into the input shaft 14 and placing a bushing 20 between the two first bearings 16.
S2, the anti-backlash gear 18 is arranged at the thin end of the input shaft 14 and is pressed into the cylindrical pin 19 through the through hole 18c on the anti-backlash gear.
And S3, inserting the assembly completed by the two-step assembly into the hole 17c of the sleeve 17. And the input shaft end face 14a of the input shaft 14 is brought into abutment with the sleeve stepped face 17b of the sleeve 17.
S4, placing the circlip 15 for holes in the annular groove 17d of the sleeve 17 to prevent the input shaft 14 from moving in the axial direction.
S5: assembling an angular displacement mechanism: the two groups of sensitive components 9 and the magnetism isolating sleeve 8 are coaxially arranged in the protective shell 7 and are matched with the internal threads of the protective shell 7 through the compression ring 10 with external threads, and the two groups of sensitive components 9 and the magnetism isolating sleeve 8 are axially locked and fastened in the internal protective shell 7. A cover plate 11 is arranged right above the compression ring 10, two groups of rotor iron cores 13 are arranged on the rotating shaft 6, and the rotor iron cores 13 are coaxially arranged in an inner hole of the sensitive assembly 9 through limiting of two bearings 12.
S6: an anti-backlash gear 18 is arranged at the shaft end of the rotating shaft 6 of the angular displacement mechanism 3, and the anti-backlash gear 18 is fixed at the hole edge 4a of the anti-backlash gear 18 by laser welding for one circle.
S7: the first inner hole 17a of the sleeve 17 of the transmission mechanism 1 is sleeved with the first outer circle 7c of the protective shell 7 of the angular displacement mechanism 3, and the contact length is about 1-2 mm.
S8, using an operation window 17e arranged on the sleeve 17, and using a tool to stagger the main teeth 18a and the auxiliary teeth 18b of the anti-backlash gear 18 by 5-7 teeth so that a torsion moment is generated by a spring inside the anti-backlash gear 18. With this state maintained, the backlash gear 18 is meshed with the spur gear 4.
And S9, pushing the sleeve 17 to the bottom, so that the end face 17f of the sleeve is abutted against the first step face 7a of the protective shell 7. And the two are welded and fixed by adopting laser welding.
S10: and (3) performing assembly of the mounting flange 2, wherein an inner hole 2b of the mounting flange 2 is sleeved with a second outer circle 7d of the protective shell. And the end face 2a is abutted against the second step face 7b of the protective housing. And then welding and fixing the two by adopting laser welding.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. A tandem geared wide range angular displacement sensor, the sensor comprising: a transmission mechanism (1) for sensing the measured angle, a mounting flange (2) for mounting and fixing the sensor, an angular displacement mechanism (3) for converting the measured angle into a voltage signal and outputting the voltage signal, and a cylindrical gear (4) for transmitting the measured angle from the transmission mechanism (1) to the angular displacement mechanism (3),
the angular displacement mechanism (3) is welded and fixed with the transmission mechanism (1) and the mounting flange (2) respectively,
the transmission mechanism (1) is sealed in a cavity of the mounting flange (2), the transmission mechanism (1) is provided with a sleeve (17) welded and fixed with the angular displacement mechanism (3) and an anti-backlash gear (18) meshed with the cylindrical gear (4), and the anti-backlash gear (18) is meshed with the cylindrical gear (4) in an inner-outer tooth fit manner.
2. The tandem geared wide range angular displacement sensor according to claim 1, characterized in that the transmission mechanism (1) further comprises an input shaft (14), two first bearings (16) for limiting and fixing the input shaft (14) in a sleeve (17), and a cylindrical pin (19) for interference fit of the input shaft (14) with an anti-backlash gear (18).
3. The tandem gear transmission wide range angular displacement sensor according to claim 2, wherein the sleeve (17) is provided with an operation window (17 e) for facilitating engagement of the backlash eliminating gear (19) with the cylindrical gear (4), a first inner hole (17 a) for sleeving with the angular displacement mechanism (3), a sleeve step surface (17 b) abutting against an input shaft end surface (14 a) of the input shaft (14), a hole (17 c) for limiting and fixing the input shaft (14), and an annular groove (17 d), wherein a circlip (15) for hole is placed in the annular groove (17 e), and the circlip (15) for hole is used for preventing the input shaft (14) from being axially strung.
4. The tandem geared wide range angular displacement sensor according to claim 2, wherein a bushing (20) is provided between two of the first bearings (16), the first bearings (16) being in an interference fit with the input shaft (14).
5. The tandem geared wide range angular displacement sensor according to claim 2, wherein the anti-backlash gear (18) comprises a main tooth (18 a), a sub tooth (18 b), a through hole (18 c) for pressing in a cylindrical pin (19), and a mounting hole (18 d) for mating with the input shaft (14).
6. The tandem geared wide range angular displacement sensor according to claim 1, wherein the angular displacement mechanism (3) comprises a protective housing (7) welded to the transmission mechanism (1) and the mounting flange (2), two sets of sensitive components (9) coaxially arranged in the protective housing (7), a magnetism isolating sleeve (8) arranged between the two sets of sensitive components (9), a rotating shaft (6) fixedly connected with the cylindrical gear (4) and an aviation socket (5) for outputting voltage signals,
two groups of rotor iron cores (13) are arranged on the rotating shaft (6), and the rotor iron cores (13) are coaxially arranged in the inner holes of the sensitive components (9) through limiting of two second bearings (12).
7. The tandem geared wide range angular displacement sensor according to claim 6, characterized in that the angular displacement mechanism (3) further comprises a pressure ring (10) and a cover plate (11) arranged right above the pressure ring (10), the pressure ring (10) is provided with external threads matching with the internal threads of the protective housing (7), and the pressure ring (10) is used for locking and fastening two groups of sensitive components (9) and magnetism isolating sleeves (8) in the protective housing (7) in the axial direction.
8. The tandem geared wide range angular displacement sensor according to claim 6, wherein the sensitive assembly (9) comprises a stator winding (9 c), a U-shaped groove (9 a) for placing the stator winding (9 c) and an invaginated bearing mounting hole site (9 b).
9. A tandem geared wide range angular displacement sensor according to claim 3, wherein the mounting flange (2) comprises a mounting flange end face (2 a) abutting against a second step face (7 b) of the protective housing (7), a mounting flange first inner bore (2 b) sleeved with a second outer circle (7 d) of the protective housing, and a mounting flange second inner bore (2 c) for the passage of the sleeve (17).
10. The tandem geared wide range angular displacement sensor according to claim 9, wherein the hole spacing of the holes (17 c) and the first inner holes (17 a) is the same as the hole spacing of the mounting flange second inner holes (2 c) and the mounting flange first inner holes (2 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311843960.XA CN117870603A (en) | 2023-12-29 | 2023-12-29 | Tandem gear transmission wide-range angular displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311843960.XA CN117870603A (en) | 2023-12-29 | 2023-12-29 | Tandem gear transmission wide-range angular displacement sensor |
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| CN117870603A true CN117870603A (en) | 2024-04-12 |
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| CN202311843960.XA Pending CN117870603A (en) | 2023-12-29 | 2023-12-29 | Tandem gear transmission wide-range angular displacement sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119779136A (en) * | 2024-12-24 | 2025-04-08 | 中国航空工业集团公司西安飞行自动控制研究所 | A high-reliability dual-redundancy angular displacement sensor with large travel |
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2023
- 2023-12-29 CN CN202311843960.XA patent/CN117870603A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119779136A (en) * | 2024-12-24 | 2025-04-08 | 中国航空工业集团公司西安飞行自动控制研究所 | A high-reliability dual-redundancy angular displacement sensor with large travel |
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