CN109655270B - Device capable of measuring torque at high rotating speed by cantilever installation - Google Patents
Device capable of measuring torque at high rotating speed by cantilever installation Download PDFInfo
- Publication number
- CN109655270B CN109655270B CN201811266755.0A CN201811266755A CN109655270B CN 109655270 B CN109655270 B CN 109655270B CN 201811266755 A CN201811266755 A CN 201811266755A CN 109655270 B CN109655270 B CN 109655270B
- Authority
- CN
- China
- Prior art keywords
- spline shaft
- motor spline
- motor
- joint structure
- lap joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a cantilever-mounted device capable of measuring torque at high rotating speed, which comprises a lap joint structure shell and a mounting bracket, wherein the lap joint structure shell is sleeved on a motor spline shaft; the lap joint structure shell is provided with an opening, and a stator of a torque sensor for measuring torque is arranged in the opening and detachably connected to the lap joint structure shell through a mounting bracket; the rotor of the torque sensor is arranged between the motor spline shaft I and the motor spline shaft II and is detachably connected with the motor spline shaft I and the motor spline shaft II respectively. The torque sensor is arranged in a cantilever manner, so that the number of parts on a transmission chain is reduced as much as possible. The structure is compact as a whole, and the axial length, namely the cantilever length, is reduced as much as possible. The invention has wide range of working rotating speed and wide application range, and can be applied to power extraction tests of various high-rotating-speed mechanical equipment.
Description
Technical Field
The invention belongs to the technology of an aero-engine ground rack power extraction test, relates to the research of a method for measuring the output power of an aero-engine, relates to the field of high-rotating-speed mechanical transmission, and can be applied to a cantilever-mounted high-rotating-speed torque measurement and calibration device with short working time.
Background
The working speed of an accessory alternating-current generator of the aircraft engine is 20000 r/min. According to development requirements, a torque sensor is additionally arranged between the motor and an aircraft accessory casing of the aircraft engine to measure the output shaft power of the aircraft engine. The aircraft accessory casing is suspended and hoisted, and due to space limitation, the alternating current generator is required to be installed in a cantilever mode. Therefore, the installation environment of the torque sensor has the technical characteristics of cantilever installation, narrow space, high rotating speed transmission, limited cantilever length and the like. Due to the restriction of the factors, a torque sensor installed by a flange and a cantilever-mounted motor with high rotating speed are adopted.
The existing cantilever torque measuring technology mainly adopts a mode of attaching a strain gauge to measure the rotating torque of a shaft. Most of the torque sensors are mounted in the form of shaft sleeve type mounting and shaft coupling mounting. Most torque sensor installations are ground supported. No documents on bridge type lap joint structure design for cantilever-mounted torque sensors at home and abroad are retrieved.
Disclosure of Invention
Object of the Invention
The invention provides a design method of a bridge type lap joint structure for torque sensor cantilever installation, designs a device capable of measuring torque at a high rotating speed by cantilever installation, solves the problems of the torque sensor cantilever installation, high-speed transmission and the like, and realizes effective transmission of power.
Technical solution of the invention
In order to achieve the purpose, the invention adopts the following technical scheme:
a cantilever-mounted device capable of measuring torque at high rotating speed comprises a lap joint structure shell and a mounting bracket, wherein the lap joint structure shell is sleeved on a motor spline shaft; the lap joint structure shell is provided with an opening, and a stator of a torque sensor for measuring torque is arranged in the opening and detachably connected to the lap joint structure shell through a mounting bracket; the rotor of the torque sensor is arranged between the motor spline shaft I and the motor spline shaft II and is detachably connected with the motor spline shaft I and the motor spline shaft II respectively.
Preferably, the cross section of the mounting bracket is L-shaped and is detachably connected with the rotor of the torque sensor and the lap joint structure shell respectively.
Preferably, the profile of the contact surface of the mounting bracket and the overlapping structure shell is matched with the outer profile of the overlapping structure shell.
Preferably, the motor spline shaft I and the motor spline shaft II are coaxial.
Preferably, according to the examination and analysis of the axial length and the motor strength of the rotating part, two ends of the shell of the lap joint structure are respectively connected with the motor mounting seat of the airplane accessory casing and the alternating-current generator through the hoops.
Preferably, the motor spline shaft I and the motor spline shaft II both adopt an external spline structure.
Preferably, form and position tolerance constraint is carried out on the motor spline shaft I, the motor spline shaft II and the lap joint structure shell, action balance simulation analysis is carried out on a rotor assembly consisting of the motor spline shaft I, the rotor of the torque sensor and the motor spline shaft II, and rotation balance of the bridge structure is guaranteed.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention has the advantages that: the whole design idea is simple and clear, the torque sensor is installed in a cantilever mode, and the number of parts on a transmission chain is reduced as far as possible. The structure is compact as a whole, and the axial length, namely the cantilever length, is reduced as much as possible. The invention has wide range of working rotating speed and wide application range, and can be applied to power extraction tests of various high-rotating-speed mechanical equipment.
Drawings
FIG. 1 is a schematic diagram of a cantilever-mounted device for measuring torque at high rotational speed according to the present invention.
Fig. 2 is a schematic structural diagram of a cantilever-mounted device capable of measuring torque at high rotation speed according to the present invention.
Fig. 3 is a side view of the mounting bracket.
Fig. 4 is a front view of the mounting bracket.
Fig. 5 is a top view of the mounting bracket.
In the figure: 1-an alternator; 2, a motor spline shaft II; 3-a torque sensor rotor; 4-motor spline shaft I; 5, clamping a hoop; 6-mounting seat of motor of airplane accessory case; 7-a screw; 8-a torque sensor stator; 9-bolt; 10-lap joint structural shell.
Detailed Description
The detailed description of the embodiments of the present invention is provided in conjunction with the summary of the invention and the accompanying drawings.
A cantilever-mounted device capable of measuring torque at high rotating speed comprises a lap joint structure shell 10 sleeved on a motor spline shaft and a mounting bracket, wherein the motor spline shaft comprises a motor spline shaft I4 and a motor spline shaft II 2 which are separated from each other; an opening is formed in the lap joint structure shell 10, and a stator 8 of a torque sensor for measuring torque is arranged in the opening and detachably connected to the lap joint structure shell 10 through a mounting bracket; torque sensor's rotor 3 sets up between motor spline shaft I4 and motor spline shaft II 2 and can dismantle with motor spline shaft I4 and motor spline shaft II 2 respectively through screw 7 and be connected, and motor spline shaft I4 is connected torque sensor's rotor 3 and aircraft annex machine casket motor mount pad 6, and motor spline shaft II 2 is connected torque sensor's rotor 3 and alternator 1.
The cross section of the mounting bracket is L-shaped and is detachably connected with a stator 8 of the torque sensor and a lap joint structure shell 10 through bolts 9 respectively.
The profile of the contact surface of the mounting bracket and the lap-joint structural shell 10 is matched with the outer profile of the lap-joint structural shell 10.
The motor spline shaft I4 is coaxial with the motor spline shaft II 2.
Two ends of the lap joint structure shell are respectively connected with an aircraft accessory casing motor mounting seat 6 and an alternating current generator through a hoop 5.
The motor spline shaft I4 and the motor spline shaft II 2 both adopt an external spline structure.
The motor spline shaft I4, the motor spline shaft II 2 and the lap joint structure shell 10 are subjected to circular runout amount constraint, a rotor assembly formed by the motor spline shaft I4, the rotor 3 of the torque sensor and the motor spline shaft II 2 is subjected to dynamic balance simulation analysis, and the rotation balance of the bridge structure is guaranteed.
The working principle is as follows: the bridge type lap joint structure comprises a motor spline shaft II 2, a motor spline shaft I4, a hoop 5, a screw 7, a bolt 9 and a lap joint structure shell 10. The power source transmits power to a rotor 3 of the torque sensor through a motor spline shaft I4, the torque of the transmission shaft is measured through the torque sensor, and data and signals are received and sent by a stator 8 of the torque sensor. The torque sensing rotor 3 transfers power to the alternator 1 through the motor spline shaft ii 2.
Examples
(1) According to the structure and the characteristics of a torque sensor, the adapter shaft suitable for the rotor flange mounting edge of the torque sensor is designed, in the attached drawing, a motor spline shaft II 2 is used for connecting a rotor 3 of the torque sensor with an alternating current generator 1, a motor spline shaft I4 is used for enabling a transmission chain formed by connecting parts of the rotor 3 of the torque sensor and a motor mounting seat 6 of an airplane accessory casing to be of a lap joint structure, the rotor 3 of the torque sensor does not have any other support, the motor spline shafts at two ends are lapped on the casing and the alternating current motor 1, two motor spline shafts are not supported by bearings, and the design span of the lap joint structure (the rotor 3 containing the torque sensor) is 183 mm.
(2) According to the structure types of a power source and a tested piece, the interface type of a transfer shaft is selected, the connection structure of the motor spline shaft II 2 and the motor spline shaft I4 is designed to be an external spline structure, the design requirements of splines at two ends meet the technical requirements of splines of an aircraft accessory casing and an alternating current generator 1, a fracture protection design is carried out on a transmission shaft, and the fracture torque value is 107.5 N.m.
(3) Carry out geometric tolerances to motor spline shaft I4, motor spline shaft II 2 and overlap joint structure casing 10 and retrain, the addendum circle run-out value of motor spline shaft I4, motor spline shaft II 2 requires to be within 0.012mm, and the circle run-out value of overlap joint structure casing 10 both ends requires to be within 0.02 mm. And the rotor assembly composed of the motor spline shaft I4, the torque sensor rotor 3 and the motor spline shaft II 2 is subjected to high-speed dynamic balance analysis under the undamped condition: the torque measuring device and the motor rotor are connected in a lap joint mode to form a rotating chain. The maximum rotating speed of the rotating chain is required to reach 20000 r/min. The rotor system is subjected to rotodynamic analysis prior to use. And theoretically calculating the dynamic balance of the rotating part. The results of calculation of the 1-order undamped critical rotating speed vibration mode and the 2-order undamped critical rotating speed vibration mode are analyzed by establishing a rotor model, and the rotor bearing system can normally run on the premise of no instability force source. The motor rotor, the switching device and the torque sensor rotor total system can stably operate within the range of 22000 r/min.
(4) According to the axial length of a rotating part and motor strength examination and analysis, a lap joint structure shell is designed, and installation forms of two ends of the shell are designed, wherein in the attached drawing, two hoops 5 are respectively used for connecting a lap joint structure shell 10 with an aircraft accessory casing installation seat 6 and an alternating-current generator. The fitting spigot dimension of the lap joint structural housing 10 is phi 190/phi 165 x 12.
(5) Handle the installation form of torque sensor stator, according to the functional requirement, carry out optimal design to bridge type overlap joint structure, 10 openings to overlap joint structure casing, and increase the installing support, install torque sensor stator 8 on overlap joint structure casing 10 through bolt 9, require torque sensor stator 8 and torque sensor rotor contactless, both have 1cm clearance respectively in axial and footpath, install tachometric sensor on overlap joint structure casing 10 and guarantee the measurement of 20000r/min rotational speed, optimize the installation tang of motor and machine casket, guarantee that bridge type overlap joint structure rotating chain is within the dynamic balance requirement range.
Claims (5)
1. The utility model provides a but cantilever installation high rotational speed measurement torque's device which characterized in that: the motor spline shaft comprises a lap joint structure shell (10) sleeved on the motor spline shaft and a mounting bracket, wherein the motor spline shaft comprises a motor spline shaft I (4) and a motor spline shaft II (2) which are separated from each other; an opening is formed in the lap joint structure shell (10), and a stator (8) of a torque sensor for measuring torque is arranged in the opening and detachably connected to the lap joint structure shell (10) through a mounting bracket; a rotor (3) of the torque sensor is arranged between the motor spline shaft I (4) and the motor spline shaft II (2) and is respectively detachably connected with the motor spline shaft I (4) and the motor spline shaft II (2); the cross section of the mounting bracket is L-shaped and is respectively detachably connected with a stator (8) of the torque sensor and a lap joint structure shell (10); two ends of the lap joint structure shell are respectively connected with an aircraft accessory casing motor mounting seat (6) and an alternating current generator through a hoop (5).
2. A cantilever-mounted high-speed torque measuring device according to claim 1, wherein: the profile of the contact surface of the mounting bracket and the lap joint structure shell (10) is matched with the external profile of the lap joint structure shell (10).
3. A cantilever-mounted high-speed torque measuring device according to claim 1, wherein: the motor spline shaft I (4) and the motor spline shaft II (2) are coaxial.
4. A cantilever-mounted high-speed torque measuring device according to claim 1, wherein: the motor spline shaft I (4) and the motor spline shaft II (2) both adopt an external spline structure.
5. A cantilever-mounted high-speed torque measuring device according to claim 1, wherein: form and position tolerance constraint is carried out on the motor spline shaft I (4), the motor spline shaft II (2) and the lap joint structure shell (10), action balance simulation analysis is carried out on a rotor assembly consisting of the motor spline shaft I (4), the rotor (3) of the torque sensor and the motor spline shaft II (2), and rotation balance of the bridge structure is guaranteed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811266755.0A CN109655270B (en) | 2018-10-29 | 2018-10-29 | Device capable of measuring torque at high rotating speed by cantilever installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811266755.0A CN109655270B (en) | 2018-10-29 | 2018-10-29 | Device capable of measuring torque at high rotating speed by cantilever installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109655270A CN109655270A (en) | 2019-04-19 |
| CN109655270B true CN109655270B (en) | 2021-06-22 |
Family
ID=66110709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811266755.0A Active CN109655270B (en) | 2018-10-29 | 2018-10-29 | Device capable of measuring torque at high rotating speed by cantilever installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109655270B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005768A (en) * | 2019-11-21 | 2020-04-14 | 中国航发沈阳黎明航空发动机有限责任公司 | Electromagnetic counterweight device for rotor of aircraft engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213769U (en) * | 1987-09-29 | 1988-08-03 | 东北重型机械学院 | Assembling caliper type torque transducer |
| CN1047664C (en) * | 1993-09-16 | 1999-12-22 | 东北重型机械学院南校 | Stress-strain type torque transducer |
| CN204095128U (en) * | 2013-11-11 | 2015-01-14 | 必能信超声(上海)有限公司 | Torque detecting apparatus and comprise its vibration friction welding machine |
| CN106195034A (en) * | 2015-05-07 | 2016-12-07 | 贵州航空发动机研究所 | A kind of switching device of aviation power accessory drive |
| CN107328506A (en) * | 2016-11-09 | 2017-11-07 | 哈尔滨工业大学 | High-speed electric main shaft dynamometer machine and its application |
-
2018
- 2018-10-29 CN CN201811266755.0A patent/CN109655270B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 航空发动机附件机匣传动齿轮失效分析研究;杨语;《中国优秀硕士学位论文全文数据库》;20170315(第3期);第63页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109655270A (en) | 2019-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102269654B (en) | Water lubricated bearing and transmission system comprehensive performance testing platform | |
| KR101401498B1 (en) | Dynamometer for measuring thrust and torque of propeller boss cap fin | |
| CN203732190U (en) | High-speed motor dedicated dynamometer | |
| CN102901594A (en) | Device for testing friction moment of pairing rolling bearing | |
| CN207133000U (en) | Test platform | |
| CN205449154U (en) | High -speed direct current motor test platform of unmanned aerial vehicle | |
| CN105628378A (en) | Gear dynamic stress test device | |
| CN107328506A (en) | High-speed electric main shaft dynamometer machine and its application | |
| CN109655270B (en) | Device capable of measuring torque at high rotating speed by cantilever installation | |
| CN104374561A (en) | Controllable pitch propeller managing test table | |
| CN205520745U (en) | Electricity main shaft mechatronic detecting system | |
| CN203455166U (en) | Rotation torque, radial force and axial force comprehensive loading test apparatus | |
| CN104481894B (en) | Centrifugal submersible electric pump down-hole Torque Measuring System | |
| CN112683189B (en) | Marine propeller blade dynamic strain measuring device based on FBG | |
| CN206876320U (en) | A kind of testboard for new-energy automobile gearbox efficiency test | |
| CN105784246A (en) | Rotary shaft axial force measuring device | |
| CN202305069U (en) | Testing device of load of wind turbine transmission chain | |
| CN203455168U (en) | Rotation torque and axial force comprehensive loading test apparatus | |
| CN114166932B (en) | Nondestructive inspection robot for generator rotor guard ring | |
| CN207095858U (en) | A kind of bearing test device for motor | |
| CN104006907A (en) | Wheel-type-shaft-end torque sensor | |
| Qin et al. | Shaft power measurement for marine propulsion system based on magnetic resonances | |
| CN109141877A (en) | A kind of bearing test device for driving motor | |
| CN220084218U (en) | Torque sensor of air compressor | |
| CN203132750U (en) | Wheel-type shaft end torque sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |