CN116625628A - Two-degree-of-freedom movement measurement mechanism and method - Google Patents
Two-degree-of-freedom movement measurement mechanism and method Download PDFInfo
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- CN116625628A CN116625628A CN202310912287.4A CN202310912287A CN116625628A CN 116625628 A CN116625628 A CN 116625628A CN 202310912287 A CN202310912287 A CN 202310912287A CN 116625628 A CN116625628 A CN 116625628A
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- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 11
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 230000005284 excitation Effects 0.000 claims abstract description 14
- 238000000691 measurement method Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 101100335145 Pectobacterium atrosepticum (strain SCRI 1043 / ATCC BAA-672) fmt gene Proteins 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a two-degree-of-freedom movement measurement mechanism and a two-degree-of-freedom movement measurement method, belongs to the technical field of wind tunnel tests, and aims to solve the problem that an existing movement measurement device cannot realize arbitrary angle measurement of a section. The device comprises a slipway module, a bracket sleeve, a rotating shaft, a rotating module and a measuring bent; the sliding table module is arranged along the axial direction of the test section, the sliding table module is connected with the support sleeve through the module support, and the rotating shaft is in running fit with the support sleeve; the rotating module comprises a frameless motor, a rotor of the frameless motor is coaxially connected with a first output pipe shaft and a second output pipe shaft respectively, the first output pipe shaft is connected with a first encoder and an excitation brake respectively, the second output pipe shaft is connected with a measuring bent frame sequentially through a harmonic reducer and a rotating shaft, the measuring bent frame realizes axial movement through a sliding table module, the measuring bent frame realizes rotation through the rotating module, further the full-angle data measurement of any measuring section of a test section is realized, the measuring data range is enlarged, the experimental efficiency is improved, and the wind tunnel operation cost is reduced.
Description
Technical Field
The invention belongs to the technical field of wind tunnel tests, and particularly relates to a two-degree-of-freedom movement measuring mechanism and method.
Background
Wind tunnels are important tools for acquiring test data, which can simulate the environmental conditions in which an aircraft is in actual flight. Wind tunnel test is used as the main method for researching aerodynamics, and provides necessary guarantee for the development of the fields of aerospace and the like. Before the wind tunnel is put into use, the static pressure gradient of the flow field of the test section is required to be measured so as to verify the performance of the wind tunnel.
The invention patent with the publication number of CN114486163B discloses a large wind tunnel moving and measuring device, wherein the moving and measuring device is used for installing a measuring bent and realizing axial movement and positioning of the bent, the measuring bent is installed at the front end of the moving and measuring device, the moving and measuring device drives the measuring bent to move to a designated position and keep static, a measuring and controlling system collects and records flow field data of the position, after data collection is completed, the moving and measuring device drives the measuring bent to move to the next measuring position, the measuring and controlling system continues to collect, and flow field data measurement of different sections is sequentially completed.
However, the measurement bent of the mobile measurement device is fixedly installed, measurement of any angle of the section cannot be realized, the range of measurement data is limited, the test efficiency is low, and the operation cost of the wind tunnel is greatly increased.
Disclosure of Invention
The invention aims to provide a two-degree-of-freedom moving measurement mechanism and a two-degree-of-freedom moving measurement method, so as to solve the problem that the conventional moving measurement device cannot realize measurement of any angle of a section. The technical scheme adopted by the invention is as follows:
the two-degree-of-freedom movement measurement mechanism comprises a sliding table module, wherein the sliding table module comprises a sliding table frame, a ball screw, a servo gear motor and a sliding block, the ball screw is arranged along the long direction of the sliding table frame and is in running fit with the sliding table frame, the output end of the servo gear motor is connected with the ball screw, the sliding block is in long-direction sliding fit with the sliding table frame, and the sliding block is in threaded fit with the ball screw;
the device also comprises a module support, a support sleeve, a rotating shaft, a rotating module and a measuring bent; the four sliding table modules are arranged along the four corners of the axial direction of the test section in a one-to-one correspondence manner, one ends of the four module supports are connected with the sliding blocks of the four sliding table modules in a one-to-one correspondence manner, the other ends of the four module supports are connected with the support sleeve, and the rotating shaft is in running fit with the support sleeve;
the rotary module comprises a rear end cover, a motor shell, a harmonic reducer and a front end cover which are sequentially connected, a stator of the frameless motor is fixed on the inner periphery of the motor shell, a rotor of the frameless motor is respectively connected with a first output pipe shaft and a second output pipe shaft coaxially, a rotor end of a first encoder is connected with the first output pipe shaft, a mounting flange of an excitation brake is connected with the motor shell, an output end of the excitation brake is connected with the first output pipe shaft, the second output pipe shaft is connected with an input end of the harmonic reducer, a rotor end of the second encoder is connected with an output end of the harmonic reducer, an output end of the harmonic reducer passes through the front end cover and is connected with one end of a rotating shaft, the other end of the rotating shaft is connected with a measuring bent frame, the front end cover is coaxially connected with a bracket sleeve through a sleeve, a binding post is arranged on the rear end cover and is connected with a rear housing, and the rear housing is a cavity with a front opening.
Further, the model of the excitation brake is 111-12-13G.
Further, the model of the frameless motor is KBMS-43X02.
Further, the first encoder and the second encoder are both ECA4000 series vacuum absolute value encoders.
Further, the model of the harmonic speed reducer is SHG-40-50-2UH.
Further, the rotating shaft is in running fit with the support sleeve through a bearing.
Further, the first output tube shaft and the second output tube shaft are coaxially connected.
The invention also provides a two-degree-of-freedom movement measurement method which is realized by means of the two-degree-of-freedom movement measurement mechanism and comprises the following steps:
step one: the ball screw is driven to rotate by a servo gear motor of the sliding table module, the measuring bent frame is driven to reach the section to be measured of the test section, and the position of the measuring bent frame along the axial direction of the test section is locked by the servo gear motor;
step two: the frameless motor drives the measuring bent to rotate through the harmonic speed reducer;
step three: acquiring and measuring corner information of the bent frame through a first encoder and a second encoder;
step four: the first output pipe shaft is tightly held by the excitation brake, so that the position locking of the measuring bent along the circumferential direction of the test section is realized;
step five: and repeating the first to fourth steps to finish static pressure measurement of all the section flow fields to be measured of the test section.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a two-degree-of-freedom moving and measuring mechanism and a method, wherein a measuring bent is arranged at the front end of the moving and measuring mechanism, the measuring bent axially moves through a sliding table module, and the measuring bent rotates through a rotating module, so that full-angle data measurement of any measuring section of a test section is realized. The method is applied to a continuous transonic wind tunnel, increases the measurement data range, improves the experimental efficiency and reduces the wind tunnel operation cost.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic illustration of the connection of the bracket sleeve, the rotary module and the measurement bent;
FIG. 4 is a cross-sectional view of a rotary module;
fig. 5 is a schematic diagram of the connection of the slipway module and the module holder.
In the figure: the device comprises a 1-slipway module, a 2-module support, a 3-support sleeve, a 4-sleeve, a 5-rotating module, a 6-back housing, a 7-measuring bent frame, an 8-test section, a 9-rotating shaft, a 10-binding post, an 11-excitation brake, a 12-first encoder, a 13-frameless motor, a 14-second output pipe, a 15-harmonic reducer, a 16-second encoder, a 17-back end cover, a 18-first output pipe shaft, a 19-motor housing and a 20-front end cover.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, wherein the fixed connection is a conventional fixed connection mode such as folding connection, rivet connection, bonding connection, welding connection and the like, the detachable connection comprises a conventional detachable mode such as bolt connection, buckle connection, pin connection, hinge connection and the like, and when a specific connection mode is not limited, at least one connection mode can be found in the conventional connection mode by default to realize the function, and the person skilled in the art can select the function according to the needs. For example: the fixed connection is welded connection, and the detachable connection is bolted connection.
The present invention will be described in further detail below with reference to the accompanying drawings, the following examples being illustrative of the present invention and the present invention is not limited to the following examples.
Embodiment one: 1-5, a two-degree-of-freedom movement measurement mechanism comprises a sliding table module 1, wherein the sliding table module 1 comprises a sliding table frame, a ball screw, a servo gear motor and a sliding block, the ball screw is arranged along the long direction of the sliding table frame, the ball screw is in running fit with the sliding table frame, the output end of the servo gear motor is connected with the ball screw, the sliding block is in long-direction sliding fit with the sliding table frame, and the sliding block is in threaded fit with the ball screw;
the device also comprises a sliding module bracket 2, a bracket sleeve 3, a rotating shaft 9, a rotating module 5 and a measuring bent 7; the four sliding table modules 1 are correspondingly arranged along four corners of the axial direction of the test section 8 one by one, one end of each of the four module supports 2 is correspondingly connected with the sliding blocks of the four sliding table modules 1 one by one, the other ends of the four module supports 2 are respectively connected with the periphery of the support sleeve 3, and the rotating shaft 9 is in movable fit with the inner turnover of the support sleeve 3;
the rotary module 5 comprises a rear end cover 17, a motor shell 19, a harmonic reducer 15 and a front end cover 20 which are coaxially connected in sequence, a stator of the frameless motor 13 is fixed on the inner periphery of the motor shell 19, a rotor of the frameless motor 13 is coaxially connected with a first output tube shaft 18 and a second output tube shaft 14 respectively, a rotor end of the first encoder 12 is connected with the first output tube shaft 18, a reading head of the first encoder 12 is fixed on the motor shell 19, a mounting flange of the excitation brake 11 is connected with the motor shell 19, an output end of the excitation brake 11 is connected with the first output tube shaft 18, the excitation brake 11 is arranged in the rear end cover 17 and is provided with a working gap with the rear end cover 17, a second output tube shaft 14 is connected with an input end of the harmonic reducer 15, a rotor end of the second encoder 16 is connected with an output end of the harmonic reducer 15, a reading head of the second encoder 16 is fixed on the front end cover 20, an output end of the harmonic reducer 15 passes through the front end cover 20 and is connected with one end of the rotating shaft 9, the other end of the rotating shaft 9 is connected with a mounting end of the measuring frame 7, the front end cover 20 is coaxially connected with the sleeve 4 through the sleeve 3, the sleeve 17 is connected with the rear end cover 17 and is provided with the rear end cover 6, and is provided with a rear end cover 6, and a rear end cover 6 is provided with a rear end opening is provided with a rear end cover 6.
The model number of the excitation brake 11 is 111-12-13G.
The model of the frameless motor 13 is KBMS-43X02.
The first encoder 12 and the second encoder 16 are each ECA4000 series vacuum absolute value encoders.
The model of the harmonic reducer 15 is SHG-40-50-2UH.
The rotating shaft 9 is in rotating fit with the bracket sleeve 3 through a bearing.
The first output tube shaft 18 and the second output tube shaft 14 are coaxially coupled.
Embodiment two: the two-degree-of-freedom displacement measurement method is realized by the two-degree-of-freedom displacement measurement mechanism in the first embodiment, and comprises the following steps:
step one: the ball screw of the sliding table module 1 is driven to rotate by a servo speed reducing motor to drive the measuring bent 7 to reach the section to be measured of the test section 8, and the position of the measuring bent 7 along the axial direction of the test section 8 is locked by the servo speed reducing motor;
step two: the frameless motor 13 drives the measuring bent 7 to rotate through the harmonic reducer 15;
step three: acquiring the rotation angle information of the measurement bent 7 through a first encoder 12 and a second encoder 16;
step four: the first output pipe shaft 18 is tightly held by the excitation brake 11, so that the position locking of the measuring bent 7 along the circumferential direction of the test section 8 is realized;
step five: and repeating the first to fourth steps to finish static pressure measurement of all the section flow fields to be measured of the test section 8.
The slipway module 1 is used for driving and locking the measuring bent 7, bears the axial aerodynamic force in the test process simultaneously, and the back housing 6 is the cavity of front opening for keep away the line space, the rotary module 5 is hollow structure, all has flange joint structure around, and the middle part leaves sufficient line space, and terminal 10 is used for connecting the cable.
The invention provides a two-degree-of-freedom moving and measuring mechanism and a method, wherein a measuring bent 7 is arranged at the front end of the moving and measuring mechanism, the measuring bent 7 axially moves through a sliding table module 1, the measuring bent 7 rotates through a rotating module 5, and then the full-angle data measurement of any measuring section of a test section 8 is realized. The method is applied to a continuous transonic wind tunnel, increases the measurement data range, improves the experimental efficiency and reduces the wind tunnel operation cost.
The above embodiments are only illustrative of the present invention and do not limit the scope thereof, and those skilled in the art may also make modifications to parts thereof without departing from the spirit of the invention.
Claims (8)
1. The two-degree-of-freedom movement measurement mechanism comprises a sliding table module (1), wherein the sliding table module (1) comprises a sliding table frame, a ball screw, a servo gear motor and a sliding block, the ball screw is arranged along the long direction of the sliding table frame and is in running fit with the sliding table frame, the output end of the servo gear motor is connected with the ball screw, the sliding block is in long-direction sliding fit with the sliding table frame, and the sliding block is in threaded fit with the ball screw;
the method is characterized in that: the device also comprises a module bracket (2), a bracket sleeve (3), a rotating shaft (9), a rotating module (5) and a measuring bent (7); the four sliding table modules (1) are arranged along the four corners of the axial direction of the test section (8) in a one-to-one correspondence manner, one ends of the four module supports (2) are connected with the sliding blocks of the four sliding table modules (1) in a one-to-one correspondence manner, the other ends of the four module supports (2) are connected with the support sleeve (3), and the rotating shaft (9) is in rotating fit with the support sleeve (3);
the rotary module (5) comprises a rear end cover (17), a motor shell (19), a harmonic reducer (15) and a front end cover (20) which are sequentially connected, a stator of the frameless motor (13) is fixed on the inner periphery of the motor shell (19), a rotor of the frameless motor (13) is respectively connected with a first output pipe shaft (18) and a second output pipe shaft (14) in a coaxial mode, a rotor end of the first encoder (12) is connected with the first output pipe shaft (18), a mounting flange of the excitation brake (11) is connected with the motor shell (19), an output end of the excitation brake (11) is connected with the first output pipe shaft (18), a rotor end of the second output pipe shaft (14) is connected with an input end of the harmonic reducer (15), an output end of the harmonic reducer (15) is connected with one end of a rotating shaft (9) through the front end cover (20), the other end of the rotating shaft (9) is connected with a measuring drain frame (7), the front end cover (20) is connected with a support (3) through a sleeve (4) in a coaxial mode, a rear end of the rotating shaft (9) is provided with a housing (17), and a cavity (6) is formed in the housing (6) is connected with the rear end cover (6).
2. The two-degree-of-freedom motion detection mechanism of claim 1, wherein: the model of the excitation brake (11) is 111-12-13G.
3. The two-degree-of-freedom motion detection mechanism of claim 1, wherein: the model of the frameless motor (13) is KBMS-43X02.
4. The two-degree-of-freedom motion detection mechanism of claim 1, wherein: the first encoder (12) and the second encoder (16) are each ECA4000 series vacuum absolute value encoders.
5. The two-degree-of-freedom motion detection mechanism of claim 1, wherein: the model of the harmonic speed reducer (15) is SHG-40-50-2UH.
6. The two-degree-of-freedom motion detection mechanism of claim 1, wherein: the rotating shaft (9) is in running fit with the bracket sleeve (3) through a bearing.
7. A two degree of freedom displacement measuring mechanism according to any one of claims 1 to 6, wherein: the first output tube shaft (18) and the second output tube shaft (14) are coaxially coupled.
8. A two-degree-of-freedom displacement measurement method implemented by means of a two-degree-of-freedom displacement measurement mechanism according to any one of claims 1 to 7, comprising the steps of:
step one: the ball screw is driven to rotate by a servo speed reducing motor of the sliding table module (1), the measuring bent (7) is driven to reach the section to be measured of the test section (8), and the position of the measuring bent (7) along the axial direction of the test section (8) is locked by the servo speed reducing motor;
step two: the frameless motor (13) drives the measuring bent (7) to rotate through the harmonic reducer (15);
step three: the first encoder (12) and the second encoder (16) are used for collecting and measuring the corner information of the bent frame (7);
step four: the first output pipe shaft (18) is tightly held by the excitation brake (11), so that the position locking of the measuring bent (7) along the circumferential direction of the test section (8) is realized;
step five: and repeating the first to fourth steps to finish static pressure measurement of all the section flow fields to be measured of the test section (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310912287.4A CN116625628A (en) | 2023-07-25 | 2023-07-25 | Two-degree-of-freedom movement measurement mechanism and method |
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| CN202310912287.4A CN116625628A (en) | 2023-07-25 | 2023-07-25 | Two-degree-of-freedom movement measurement mechanism and method |
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