CN112763742B - Rotor speed sensor mounting structure - Google Patents
Rotor speed sensor mounting structure Download PDFInfo
- Publication number
- CN112763742B CN112763742B CN202011551801.9A CN202011551801A CN112763742B CN 112763742 B CN112763742 B CN 112763742B CN 202011551801 A CN202011551801 A CN 202011551801A CN 112763742 B CN112763742 B CN 112763742B
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- speed sensor
- flange
- rotor
- output shaft
- rotor speed
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 24
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 239000004677 Nylon Substances 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a rotor wing rotating speed sensor mounting structure, which comprises a main rotor wing shaft (1), a rotating speed sensor mounting bracket (2), a rotor wing rotating speed sensor (3), a connecting sleeve (5), an output shaft flange (6) and a main speed reducer (7), wherein the output shaft flange is mounted on the main speed reducer, and the rotor wing rotating speed sensor mounting structure is characterized in that: install the tachometer installing support on the flange mounting portion of main reducer's upper end, install rotor tachometer on the tachometer installing support, the upper end of output shaft flange has coned flange portion (61), has seted up a plurality of recesses (62) along circumference evenly distributed on the peripheral conical surface of coned flange portion, and the recess sets up with rotor tachometer is corresponding. The device has the advantages of stable structure, simple structure, easy operation, accurate information acquisition, less structure and convenient production and manufacture.
Description
Technical Field
The invention relates to the technical field of information acquisition (acquisition of the rotating speed of a main rotor shaft) of a helicopter in a normal working state, in particular to a mounting structure of a rotor speed sensor.
Background
As shown in fig. 1, in the conventional rotor speed sensor mounting structure, a speed sensor mounting bracket 2 is extended from a framework adjacent to a main rotor shaft 1, and then a speed sensing block 4 is mounted on the main rotor shaft 1, so that a rotor speed sensor 3 (hall sensor) can acquire real-time speed information of the main rotor shaft.
The existing rotor wing speed sensor mounting scheme is complex in structure, a framework and a rotor wing shaft are required to be respectively provided with a matched structure, and the more the structure is mounted, the more errors possibly caused are larger, such as loose threads, inaccurate direction matching and other artificial and non-artificial factors. Therefore, how to enable the rotor speed to be accurately and conveniently acquired by using a simple structure is a problem to be solved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a rotor wing rotating speed sensor mounting structure which is stable in structure, simple in structure, easy to operate, accurate in information acquisition, small in structure and convenient to produce and manufacture.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a rotor speed sensor mounting structure, its includes main rotor shaft (1), speed sensor installing support (2), rotor speed sensor (3), connecting sleeve (5), output shaft flange (6), main reducer (7), and the lower extreme of main rotor shaft is connected with connecting sleeve, and connecting sleeve's lower extreme is connected with the output shaft flange, and output shaft flange mounting is on main reducer, its characterized in that: install the tachometer installing support on the flange mounting portion of main reducer's upper end, install rotor tachometer on the tachometer installing support, the upper end of output shaft flange has coned flange portion (61), has seted up a plurality of recesses (62) along circumference evenly distributed on the peripheral conical surface of coned flange portion, and the recess sets up with rotor tachometer is corresponding.
Furthermore, the rotating speed sensor mounting support (2) comprises a first plate portion (21), a second plate portion (22), a third plate portion (23) and a fourth plate portion (24) which are sequentially connected, a first connecting plate (25) is arranged between the two first plate portions, a second connecting plate (26) is arranged between the two fourth plate portions, a hollow portion is arranged between the two second plate portions and the two third plate portions, the first plate portion is substantially parallel to the outer peripheral conical surface of the conical flange portion (61), the second plate portion is substantially parallel to a first step surface of the upper end of the flange mounting portion, the third plate portion is substantially parallel to the outer peripheral conical surface of the flange mounting portion, the fourth plate portion is substantially parallel to the first step surface of the flange mounting portion, and the rotating speed sensor mounting support is mounted on the first step surface.
Furthermore, a first nut and a second nut are respectively arranged on two sides of the first connecting plate (25), and the rotor wing rotating speed sensor penetrates through and is installed on the first nut and the second nut; a waist-shaped hole is formed in the second connecting plate (26), and the rotating speed sensor mounting bracket is mounted on a flange mounting portion of the main speed reducer through the waist-shaped hole and a bolt.
Furthermore, the main reducer (7) comprises a driving gear (71), a driven gear (72), a bearing (73) and a nylon sleeve (74), the driving gear and the driven gear are in meshed transmission, the driven gear and the bearing are connected to the outer periphery of the output shaft flange (6), and the nylon sleeve is installed on the inner periphery of the output shaft flange.
Furthermore, the rotor wing rotating speed sensor (3) is an inductive distance sensor, the inductive distance sensor is used for calculating the rotating speed of the rotor wing by emitting and measuring the time from the emission of a specific energy beam to the reflection of an object, and the time interval is used for collecting the rotating speed information of the helicopter in the normal working state.
Furthermore, 30 grooves (62) which are uniformly distributed along the circumferential direction are formed in the peripheral conical surface of the conical flange part (61), and the grooves are rectangular grooves.
Further, the rotor speed sensor (3) shares the bolt with the main reducer (7).
(1) The invention utilizes the output shaft flange 6 which rotates together with the main rotor shaft 1 to acquire the rotating speed of the rotor by acquiring the rotating speed of the output shaft flange 6; therefore, the rotor speed sensor 3 can be directly fixed on the main reducer 7, the main reducer shares a bolt, and only one speed sensor mounting bracket 2 is needed to be additionally mounted.
(2) Because the new sensor is an inductive distance sensor, the original output shaft flange 6 needs to be grooved, and the more the grooves are, the more accurate the acquired data is; the slotted design of the output shaft flange 6 avoids the installation of a structural member combined with the sensor on the rotor shaft.
The rotor wing rotating speed sensor mounting structure is stable in structure, simple in structure, easy to operate, accurate in information acquisition, few in structure and convenient to produce and manufacture.
Drawings
FIG. 1 is a schematic view of a prior art rotor tachometer sensor mounting structure;
FIG. 2 is a schematic view of a rotor speed sensor mounting structure according to the present invention;
FIG. 3 is a schematic view of a rotor tachometer mounting structure according to the present invention;
fig. 4 is a schematic view of a rotor speed sensor mounting structure according to the present invention.
In the figure: the main rotor shaft 1, the rotational speed sensor mounting bracket 2, the rotor rotational speed sensor 3 (inductive distance sensor), the rotational speed sensing block 4, the connecting sleeve 5, the output shaft flange 6, the main speed reducer 7, the first plate portion 21, the second plate portion 22, the third plate portion 23, the fourth plate portion 24, the first connecting plate 25, the second connecting plate 26, the nut 27, the tapered flange portion 61, the groove 62, the driving gear 71, the driven gear 72, the bearing 73, and the nylon sleeve 74.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2-4, a rotor speed sensor mounting structure, it includes main rotor shaft 1, speed sensor installing support 2, rotor speed sensor 3, connecting sleeve 5, output shaft flange 6, main reducer 7, and the lower extreme of main rotor shaft 1 is connected with connecting sleeve 5, and the lower extreme of connecting sleeve 5 is connected with output shaft flange 6, and output shaft flange 6 is installed on/in main reducer 7, its characterized in that: install tacho sensor installing support 2 on the flange mounting portion of main reducer 7's upper end, install rotor tacho sensor 3 on the tacho sensor installing support 2, the upper end of output shaft flange 6 has toper flange portion 61, has seted up a plurality of recesses 62 along circumference evenly distributed on the periphery conical surface of toper flange portion 61, and recess 62 sets up with rotor tacho sensor 3 is corresponding.
Further, the rotational speed sensor mounting bracket 2 includes a first plate portion 21, a second plate portion 22, a third plate portion 23, and a fourth plate portion 24, which are connected in sequence, a first connecting plate 25 is disposed between the two first plate portions 21, a second connecting plate 26 is disposed between the two fourth plate portions 24, a hollow portion is disposed between the two second plate portions 22 and the two third plate portions 23, the first plate portion 21 is disposed substantially in parallel with the outer peripheral tapered surface of the tapered flange portion 61, the second plate portion 22 is disposed substantially in parallel with the first stepped surface of the upper end of the flange mounting portion, the third plate portion 23 is disposed substantially in parallel with the outer peripheral tapered surface of the flange mounting portion, the fourth plate portion 24 is disposed substantially in parallel with the first stepped surface of the flange mounting portion, and the rotational speed sensor mounting bracket 2 is mounted on the first stepped surface.
Further, both sides of the first connection plate 25 are respectively provided with a first nut and a second nut, and the rotor speed sensor 3 passes through and is installed on the first nut and the second nut. A kidney-shaped hole is formed in the second connecting plate 26, and the rotation speed sensor mounting bracket 2 is mounted on the flange mounting portion of the main speed reducer 7 through the kidney-shaped hole and a bolt.
Further, the main reducer 7 includes a drive gear 71, a driven gear 72, a bearing 73, and a nylon sleeve 74, the drive gear 71 and the driven gear 72 are in mesh transmission, the driven gear 72 and the bearing 73 are connected to the outer periphery of the output shaft flange 6, and the nylon sleeve 74 is attached to the inner periphery of the output shaft flange 6.
The rotor rotation speed sensor 3 is an inductive distance sensor which is used for calculating the rotation speed of the rotor by emitting and measuring the time from the emission of a specific energy beam to the reflection of an object, and is used for acquiring information (acquiring the rotation speed of a main rotor shaft) under the normal working state of the helicopter.
The peripheral conical surface of the conical flange part 61 is provided with 30 grooves 62 which are uniformly distributed along the circumferential direction and are rectangular grooves.
(1) The invention utilizes the output shaft flange 6 which rotates together with the main rotor shaft 1 to acquire the rotating speed of the rotor by acquiring the rotating speed of the output shaft flange 6; therefore, the rotor speed sensor 3 can be directly fixed on the main reducer 7, the main reducer shares a bolt, and only one speed sensor mounting bracket 2 is needed to be additionally mounted.
(2) Because the new sensor is an inductive distance sensor, the original output shaft flange 6 needs to be grooved, and the more the grooves are, the more accurate the acquired data is; the slotted design of the output shaft flange 6 avoids the installation of a structural member combined with the sensor on the rotor shaft.
The mounting structure of the rotor wing rotating speed sensor has the advantages of stable structure, simple structure, easy operation, accurate information acquisition, less structure and convenient production and manufacture.
The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a rotor speed sensor mounting structure, its includes main rotor shaft (1), speed sensor installing support (2), rotor speed sensor (3), connecting sleeve (5), output shaft flange (6), main reducer (7), and the lower extreme of main rotor shaft is connected with connecting sleeve, and connecting sleeve's lower extreme is connected with the output shaft flange, and output shaft flange mounting is on main reducer, its characterized in that: install the tachometer installing support on the flange mounting portion of main reducer's upper end, install rotor tachometer on the tachometer installing support, the upper end of output shaft flange has coned flange portion (61), has seted up a plurality of recesses (62) along circumference evenly distributed on the peripheral conical surface of coned flange portion, and the recess sets up with rotor tachometer is corresponding.
2. A rotor speed sensor mounting structure according to claim 1, the mounting bracket (2) of the rotating speed sensor comprises a first plate part (21), a second plate part (22), a third plate part (23) and a fourth plate part (24) which are connected in sequence, wherein a first connecting plate (25) is arranged between the two first plate parts, a second connecting plate (26) is arranged between the two fourth plate parts, a hollow part is arranged between the two second plate parts and the two third plate parts, the first plate part is arranged in a manner of being substantially parallel to the outer peripheral conical surface of the conical flange part (61), the second plate part is arranged in a manner of being substantially parallel to the first step surface at the upper end of the flange mounting part, the third plate part is arranged in a manner of being substantially parallel to the outer peripheral conical surface of the flange mounting part, the fourth plate part is arranged in a manner of being substantially parallel to the first step surface of the flange mounting part, and the mounting bracket of the rotating speed sensor is mounted on the first step surface.
3. A rotor speed sensor mounting structure according to claim 2, wherein the first and second nuts are provided on both sides of the first connection plate (25), respectively, and the rotor speed sensor is passed through and mounted on the first and second nuts; a waist-shaped hole is formed in the second connecting plate (26), and the rotating speed sensor mounting bracket is mounted on a flange mounting portion of the main speed reducer through the waist-shaped hole and a bolt.
4. A rotor speed sensor mounting structure according to claim 3, wherein the main reducer (7) includes a driving gear (71), a driven gear (72), a bearing (73), and a nylon sleeve (74), the driving gear and the driven gear are in mesh transmission, the driven gear and the bearing are connected to the outer periphery of the output shaft flange (6), and the nylon sleeve is mounted to the inner periphery of the output shaft flange.
5. A rotor speed sensor mounting structure according to claim 4, wherein the rotor speed sensor (3) is an inductive distance sensor which estimates the rotor speed by emitting and measuring the time from the emission of a specific energy beam to the reflection of the energy beam by an object, and from this time interval, is used for the speed information collection in the normal operation of the helicopter.
6. A rotor speed sensor mounting structure according to claim 5, wherein the tapered flange portion (61) has 30 circumferentially and uniformly distributed grooves (62) on its outer tapered surface, the grooves being rectangular grooves.
7. A rotor speed sensor mounting structure according to claim 6, wherein the bolt is shared by the rotor speed sensor (3) and the final drive (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011551801.9A CN112763742B (en) | 2020-12-24 | 2020-12-24 | Rotor speed sensor mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011551801.9A CN112763742B (en) | 2020-12-24 | 2020-12-24 | Rotor speed sensor mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112763742A CN112763742A (en) | 2021-05-07 |
| CN112763742B true CN112763742B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011551801.9A Active CN112763742B (en) | 2020-12-24 | 2020-12-24 | Rotor speed sensor mounting structure |
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| CN (1) | CN112763742B (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1333964C (en) * | 1988-08-24 | 1995-01-17 | David E. Peck | Unitary rotational speed sensor |
| JPH1098852A (en) * | 1996-09-24 | 1998-04-14 | Toshiba Corp | Rotating speed detector for rotating electric machine |
| JP2002055113A (en) * | 2000-08-09 | 2002-02-20 | Ntn Corp | Bearing device for wheel |
| JP4247721B2 (en) * | 2006-11-17 | 2009-04-02 | いすゞ自動車株式会社 | Wheel rotation sensor mounting structure |
| CN201247250Y (en) * | 2008-06-05 | 2009-05-27 | 东风汽车公司 | Apparatus for collecting ABS wheel speed signal |
| CN202770858U (en) * | 2012-09-21 | 2013-03-06 | 厦门乃尔电子有限公司 | Positioning tool for rotation speed sensor test |
| JP6429117B2 (en) * | 2014-12-26 | 2018-11-28 | いすゞ自動車株式会社 | Wheel speed sensor mounting structure |
| CN204989218U (en) * | 2015-08-21 | 2016-01-20 | 泛博制动部件（苏州）有限公司 | Vehicle velocity collection system |
| CN204925150U (en) * | 2015-08-26 | 2015-12-30 | 河南祥云植保股份有限公司 | A speedometer for having more rotor unmanned aerial vehicle paddle rotational speed dynamic measurement |
| CN206057358U (en) * | 2016-10-13 | 2017-03-29 | 广西玉柴机器股份有限公司 | The tachometric survey auxiliary stand of electromotor |
| CN106483318A (en) * | 2016-12-17 | 2017-03-08 | 中国重型机械研究院股份公司 | A kind of proximity switch tachymeter |
| CN108226559A (en) * | 2017-12-21 | 2018-06-29 | 中国矿业大学 | A kind of speed measuring device for no external part major diameter rotary shaft |
| CN112013098A (en) * | 2020-09-15 | 2020-12-01 | 马鞍山福永智能科技有限公司 | Wind-torsion-resistant shearing low-rotating-speed high-torque rotary speed reducer |
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2020
- 2020-12-24 CN CN202011551801.9A patent/CN112763742B/en active Active
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| CN112763742A (en) | 2021-05-07 |
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Address after: 333000 No.01 Zhihang Road, Jingdezhen high tech Zone, Jingdezhen City, Jiangxi Province Patentee after: Jiangxi Helicopter Co.,Ltd. Address before: 333000 No.01 Zhihang Road, Jingdezhen high tech Zone, Jingdezhen City, Jiangxi Province Patentee before: BGAC JIANGXI HELICOPTER CO.,LTD. |