CN106404342B - Rotary shaft translation dynamic loading device - Google Patents
Rotary shaft translation dynamic loading device Download PDFInfo
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- CN106404342B CN106404342B CN201611029401.5A CN201611029401A CN106404342B CN 106404342 B CN106404342 B CN 106404342B CN 201611029401 A CN201611029401 A CN 201611029401A CN 106404342 B CN106404342 B CN 106404342B
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- power output
- output shaft
- balance
- dynamic loading
- rotary shaft
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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
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a rotary shaft translation dynamic loading device which comprises a rack, a driving motor arranged on the rack and a power output shaft arranged on the upper end surface of the rack, wherein the power output end of the driving motor is connected to the power output shaft through a belt, one end of the power output shaft is connected with a dynamic loading device through a rotary shaft balance, and the other end of the power output shaft is connected to a slip ring current-leading device through a coupling; the device solves the problem of loading of the domestic rotary shaft balance, improves the measuring accuracy of the rotary shaft balance and fills the blank of domestic related fields; compared with the similar products abroad, the utility model has better efficiency-cost ratio, more convenient use and low maintenance cost.
Description
Technical Field
The invention relates to the field of wind tunnel tests, in particular to a dynamic loading device of a rotary shaft balance.
Background
The rotary shaft balance is mainly used for wind tunnel tests of propeller plane slippage influence and can directly and accurately measure propeller load. The calibration of the rotary shaft balance comprises static loading and dynamic loading, the static loading is the same as the conventional calibration of the balance, and the dynamic loading needs to apply load calibration to the balance at a certain rotating speed, so that an accurate balance formula is obtained. The dynamic load of the rotary shaft balance is a relatively new technical field in China, no specific device is found in the wind tunnel in China at present, and the wind tunnel in China has related records. At present, the rotating speed of a conventional rotary shaft balance is within 10000 rpm, and a foreign loading device can apply rated load within the maximum rotating speed range of the balance.
Disclosure of Invention
The invention aims to provide a dynamic loading device of a rotary shaft balance, which can realize that the rotating speed of the balance can reach 10000 r/min, and can realize the transmission of signals of the balance to an external controller under the high-speed rotation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rotary shaft translation dynamic loading device comprises a rack, a driving motor arranged on the rack and a power output shaft arranged on the upper end face of the rack, wherein the power output end of the driving motor is connected to the power output shaft through a belt, one end of the power output shaft is connected with a dynamic loading device through a rotary shaft balance, and the other end of the power output shaft is connected to a slip ring current leading device through a coupler;
weights are loaded on the outer cylinder of the dynamic loading device in the vertical direction and the horizontal direction respectively, a set of rotating bearings is arranged in the outer cylinder of the dynamic loading device, and the rotating shaft balance is connected with the rotating bearings;
and a signal wire is arranged in the rotary balance shaft, one end of the signal wire is in sliding contact with the balance arranged in the dynamic loading device, and the other end of the signal wire is connected with a slip ring power lead after passing through the power output shaft.
In the above technical scheme, the power output end of the driving motor is a large belt wheel, one end of the power output shaft is a small belt wheel, and the belt is connected to the large belt wheel and the small belt wheel.
In the above technical scheme, the surfaces of the two ends of the rotary shaft balance are respectively provided with contact points of a signal wire, and a signal wire is connected between the two contact points
In the technical scheme, a wire slot is arranged in the power output shaft, and the signal wire is arranged in the wire slot.
In the technical scheme, three wire grooves are formed in the power output shaft, and one signal wire is arranged in each wire groove.
In the technical scheme, the surfaces of the two ends of the rotary shaft balance are respectively provided with contact points of three signal wires, and the two corresponding contact points are connected with one signal wire.
In the technical scheme, the contact point at one end of the rotary shaft balance is in sliding contact with the balance, and the other end of the power output shaft is in sliding contact with the slip ring power-leading device.
Compared with the prior art, the invention has the beneficial effects that:
the device solves the loading problem of the domestic rotary shaft balance, improves the measuring precision of the rotary shaft balance and fills the blank of the domestic related fields.
Compared with the similar products abroad, the utility model has better efficiency-cost ratio, more convenient use and low maintenance cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: the device comprises a rack 1, a dynamic loading weight plate 2, a dynamic loading device 3, a rotary shaft balance 4, a power output shaft 5, a small belt wheel 6, a belt 7, a coupling 8, a slip ring electricity-leading device 9, a large belt wheel 10, a driving motor 11 and a rack wheel 12.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figure 1, in order to ensure the balance to operate normally, a support rack is necessary, the support rack is formed by welding rectangular steel, and the support rack not only plays a role of supporting the balance, but also plays a role of fixing and supporting a power system for driving the balance to rotate.
A driving motor is fixed on the rack and used for providing power output, power is transmitted to the small belt wheel through the belt through the large belt wheel, and the small belt wheel is connected with the power output shaft, so that the power output shaft is driven to rotate through the power output of the driving motor.
Balance the balance is a rotating shaft balance, one end of a power output shaft is connected into a dynamic loading device through the rotating shaft balance, and the other end of the power output shaft is connected to a slip ring power lead through a coupler. The dynamic loading device comprises an outer cylinder, the inner part of the outer cylinder is connected with the rotary shaft balance through a rotating bearing, and the outer cylinder and the rotary shaft balance connected with the outer cylinder are parallel to a horizontal plane in a natural state. The surface of the outer barrel is connected with a loading point with two directions, and the direction which is vertical to the horizontal placement of the outer barrel in one direction is connected with a dynamic loading scale pan for loading the scale pan in the vertical direction; and the other one connects the dynamic loading weight tray with the end part of the outer barrel, and loads the outer barrel in the horizontal direction through the loading guide wheel. When the rotary shaft balance rotates, data in two directions can be measured through loading.
The rotary shaft balance freely rotates in the outer cylinder, so that force applied to the outer cylinder needs to be output by the balance through a signal line, the point where the balance is connected and contacted with the dynamic loading device is a test point of the balance, in order to ensure that signals can be output in the rotating process of the rotary shaft balance, grooves need to be arranged in the balance and the power output shaft, so that the rotary shaft balance and the power output shaft are hollow shafts, the signal line is arranged in the grooves, and the signal line, the power output shaft and the rotary shaft balance rotate together. And a signal test point is arranged on the surface of the end part of the rotary shaft balance, and a signal line is connected with the signal test point. At the other end of the power output, in order to transmit signals in the signal lines, signal test points are also arranged on the surface of the power output shaft, each signal test point corresponds to one signal test point on the rotary shaft balance, then the end of the power output shaft with the signal test points is connected with the slip ring electricity-leading device through a coupler, the power output shaft rotates in the slip ring electricity-leading device ceaselessly through the coupler in the rotating process to convert rotating signals into static signals, the slip ring electricity-leading device cannot be driven to rotate in the rotating process, the signal test points are in direct contact with the slip ring electricity-leading device, and the signals are transmitted out through the slip ring electricity-leading device.
In the operation process of the whole system, only the rotary shaft balance and the power output shaft actually rotate, the whole rotary shaft balance can reach 10000 r/min through the driving of the driving motor, and then different weights are loaded on the rotary shaft balance through the dynamic loading device, so that the rotary shaft balance can test the test indexes which are small in the dynamic environment.
The driving of the rotary shaft balance is realized by belt transmission, the influence of the rotary vibration of the motor on the balance can be reduced, and the rotary shaft balance is suitable for driving a precision rotation measuring component. The variable-frequency speed-regulating motor is adopted, so that the loading requirement of the rotary shaft balance at different rotating speeds can be met, and the measuring range of the balance is ensured; the power output shaft with the bearing is adopted, so that the power output and signal line transmission can be ensured; the slip ring is used for leading the electricity, so that the transmission of a rotating signal is ensured, and the interference of a balance signal is prevented; the dynamic loading cylinder with the built-in bearing is adopted, so that a stable rotation signal can be applied to the balance; the dynamic loading weight adopts a locking structure, so that the weight can not be shaken out under the impact and vibration; the whole set of device adopts the optimization design of human-machine engineering, and the operation such as weight addition and subtraction is convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A rotary shaft balance dynamic loading device is characterized by comprising a rack, a driving motor arranged on the rack and a power output shaft arranged on the upper end face of the rack, wherein the power output end of the driving motor is connected to the power output shaft through a belt, one end of the power output shaft is connected with a dynamic loading device through a rotary shaft balance, and the other end of the power output shaft is connected to a slip ring current-leading device through a coupler;
weights are loaded on the outer cylinder of the dynamic loading device in the vertical direction and the horizontal direction respectively, a set of rotating bearings is arranged in the outer cylinder of the dynamic loading device, and the rotating shaft balance is connected with the rotating bearings;
a wire groove is formed in the power output shaft, and a signal wire is arranged in the wire groove; one end of the signal wire is connected with a rotating shaft balance arranged in the dynamic loading device, and the other end of the signal wire is connected with a slip ring electricity-leading device after passing through a power output shaft;
the power output end of the driving motor is a large belt wheel, one end of the power output shaft is a small belt wheel, and the belt is connected to the large belt wheel and the small belt wheel.
2. The rotating shaft astronomical dynamic loading device of claim 1, wherein three line grooves are provided in the power output shaft, and one signal line is provided in each line groove.
3. The rotating shaft celestial translation dynamic loading device according to claim 1 or 2, wherein a fixed end of the rotating shaft balance is connected with one end of the power output shaft, and the other end of the power output shaft is connected with a slip ring current-guiding device in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029401.5A CN106404342B (en) | 2016-11-22 | 2016-11-22 | Rotary shaft translation dynamic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029401.5A CN106404342B (en) | 2016-11-22 | 2016-11-22 | Rotary shaft translation dynamic loading device |
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| Publication Number | Publication Date |
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| CN106404342A CN106404342A (en) | 2017-02-15 |
| CN106404342B true CN106404342B (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611029401.5A Active CN106404342B (en) | 2016-11-22 | 2016-11-22 | Rotary shaft translation dynamic loading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107462395B (en) * | 2017-08-16 | 2019-03-19 | 中国空气动力研究与发展中心超高速空气动力研究所 | Interference coefficient calibration method between a kind of balance component |
| CN108344556A (en) * | 2018-04-28 | 2018-07-31 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of hypersonic wind tunnel balance dynamic characteristic verifying attachment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6629446B2 (en) * | 2001-01-08 | 2003-10-07 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Single vector calibration system for multi-axis load cells and method for calibrating a multi-axis load cell |
| KR100934860B1 (en) * | 2007-11-20 | 2009-12-31 | 한국항공우주연구원 | External wind tunnel calibration device |
| CN104374567B (en) * | 2013-08-13 | 2017-12-05 | 中车戚墅堰机车车辆工艺研究所有限公司 | Rotation torque, radial load and axial force synthesis load test method and device |
| CN204228251U (en) * | 2014-12-12 | 2015-03-25 | 中国航空工业空气动力研究院 | For the charger of wind-tunnel hexa-atomic rod-type balance dynamic calibration |
| CN105021337A (en) * | 2015-07-30 | 2015-11-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | Propeller driving rotation force measuring apparatus and force measuring method |
| CN205120335U (en) * | 2015-11-27 | 2016-03-30 | 中国航空工业集团公司沈阳空气动力研究所 | Balance loading head of link model calibration |
| CN105571813A (en) * | 2015-12-29 | 2016-05-11 | 中国航天空气动力技术研究院 | Wind tunnel balance single-vector calibration loading mechanism |
| CN106053009B (en) * | 2016-07-05 | 2018-04-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piezoelectric balance calibrates loading sleeve |
| CN206348127U (en) * | 2016-11-22 | 2017-07-21 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of rotary shaft balance dynamic loading device |
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