CN113124904A - Moment gyroscope restoring moment test bed and measuring method - Google Patents
Moment gyroscope restoring moment test bed and measuring method Download PDFInfo
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- CN113124904A CN113124904A CN202110449434.XA CN202110449434A CN113124904A CN 113124904 A CN113124904 A CN 113124904A CN 202110449434 A CN202110449434 A CN 202110449434A CN 113124904 A CN113124904 A CN 113124904A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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- 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
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Abstract
The invention discloses a moment gyro restoring moment test bed and a measuring method, wherein a locking mechanism, a static torque sensor, a bearing seat I, a moment gyro mounting frame and a bearing seat II are sequentially arranged on a base, a transmission shaft I is arranged on the bearing seat I, and one side of the moment gyro mounting frame is connected with one end of the transmission shaft I through a flange connecting disc I; the static torque sensor is connected with a static torque sensor connecting flange, and the other end of the transmission shaft I is connected with the static torque sensor connecting flange; the static torque sensor is connected with the locking mechanism; and the other side of the moment gyro mounting rack is connected with a transmission shaft II on the bearing seat II through a flange connecting disc II. The computer is connected with the moment gyro to be tested through the moment gyro controller, and the output of the static torque sensor is connected with the computer through the data acquisition unit. The test bed can rapidly measure the recovery moment of the moment gyro under each working condition at low cost, so that accurate and reliable test data are provided for the design and development of the moment gyro.
Description
Technical Field
The invention relates to verification of torque gyroscope functionality, in particular to a torque gyroscope restoring torque test bed and a measuring method, and belongs to the technical field of automobile tests.
Background
With the continuous development of automobiles, people have more requirements and expectations on the driving experience of the automobiles, and the high requirements on speed experience and safety functions are particularly obvious. As the number of domestic automobiles is more and more, the highway mileage reaches 484.65 kilometers, and the traffic road conditions are more and more complex, traffic accidents occur frequently, and 247646 traffic accidents occur only in 2019. Among the many causes of traffic accidents, rollover is a very serious and dangerous working condition, which can be caused by one or a series of comprehensive factors and can occur on horizontal roads and gradient roads. Rollover poses serious threat to the life safety of drivers and passengers, and also causes great economic loss. In order to enable the automobile to recover the safe driving posture under the rollover condition, a moment gyroscope can be added in the whole automobile design, so that the moment gyroscope provides recovery moment when the automobile rolls over, and the automobile recovers the original balance state as much as possible.
In order to better exert the function of the moment gyro on a vehicle, the relevant performance parameters of the moment gyro during operation are generally required to be tested, so that the moment gyro is optimally designed according to the test result. At present, the performance verification of the domestic moment gyroscope is mainly to obtain test data through a whole vehicle test, but the method has the defects of long period, high cost, difficulty in obtaining multiple groups of data and the like. Among the relevant performance parameters of the moment gyro, the recovery moment of the automobile under the rollover working condition is an important parameter influencing the driving safety of the automobile. Based on the situation, the moment gyro restoring moment test bed is designed, and has very important and positive significance for verifying the performance of the moment gyro and improving the driving safety of an automobile.
Disclosure of Invention
The invention aims to provide a moment gyro restoring moment test bed which can rapidly measure restoring moments of a moment gyro under various working conditions at low cost so as to judge whether the moment which enables the automobile to keep driving in a balanced posture can be provided or not, thereby verifying the functionality of the moment gyro and providing accurate and reliable test data for the design and development of the moment gyro.
The technical scheme of the invention is realized as follows:
a moment gyro restoring moment test bed comprises a base, wherein a locking mechanism, a static torque sensor, a bearing seat I, a moment gyro mounting frame and a bearing seat II are sequentially arranged on the same horizontal line on the base, and the moment gyro mounting frame is used for rigidly fixing a moment gyro to be tested; a transmission shaft I is arranged on the bearing seat I, and spline teeth are arranged at two ends of the transmission shaft I and extend out of two ends of the bearing seat I; a flange joint disc I is fixedly arranged at one end of the moment gyro mounting frame, which corresponds to the bearing seat I, a spline hole is formed in the center of the flange joint disc I, and one end of the transmission shaft I, which faces the flange joint disc I, is connected with the spline hole in the center of the flange joint disc I through spline teeth at the end; the bearing seat I is rigidly fixed on the base; one side of the static torque sensor, which faces the bearing seat I, is rigidly connected with a static torque sensor connecting flange, and one end of the transmission shaft I, which faces the static torque sensor, is connected with a spline hole on the static torque sensor connecting flange through spline teeth at the end; the other side of the static torque sensor is connected with a locking mechanism so as to realize that the transmission shaft I can be locked under the condition of transmitting torque through the locking mechanism; a flange II is fixedly arranged at one end of the moment gyro mounting frame, which corresponds to the bearing seat II, a spline hole is formed in the center of the flange II, a transmission shaft II is arranged on the bearing seat II, spline teeth are arranged at one end, facing the moment gyro mounting frame, of the transmission shaft II and extend out of the bearing seat II, and the extending end of the transmission shaft II is connected with the spline hole in the center of the flange II through the spline teeth;
the computer is connected with a moment gyro to be tested and to be installed on a moment gyro installation frame through a moment gyro controller, various working conditions of the automobile during running are simulated by running vehicle working condition simulation software on the computer, and the moment gyro controller controls the moment gyro to work under the corresponding working conditions; the output of the static torque sensor is connected with a data collector, the output of the data collector is connected with a computer, and the computer displays and records the torque data detected by the static torque sensor.
The moment gyro mounting frame is in a suspended state after being connected with the transmission shaft on the corresponding bearing seat through flange connection discs at two ends of the moment gyro mounting frame.
The locking mechanism is composed of a locking flange and a locking block, and the other side of the static torque sensor is rigidly connected with the locking flange; the locking flange is connected with the locking block through the flange teeth on the locking flange so as to realize the locking of the transmission shaft I; the locking piece is installed on the base.
The locking flange is a ratchet wheel, and the locking block is a pawl matched with the ratchet wheel.
The bearing seat I and the bearing seat II are respectively and rigidly fixed on the base through a bearing seat base; the locking block is rigidly fixed on the locking frame, and the locking frame is rigidly fixed on the base.
The base is formed by processing metal iron and is installed on the ground in the form of a foundation.
The invention also provides a measuring method of the moment gyro restoring moment.
A method for measuring the restoring moment of a moment gyro comprises the following steps,
1) acquiring the moment gyroscope restoring moment test bed;
2) rigidly fixing the moment gyroscope to be measured on a moment gyroscope mounting frame;
3) running vehicle working condition simulation software on a computer to simulate a certain working condition when the automobile runs, and controlling the moment gyro to work under the corresponding working condition by the moment gyro controller;
4) the locking mechanism is used for enabling the transmission shaft I to be static, then the static torque sensor senses the torque transmitted by the transmission shaft I, the torque is transmitted to the computer after being processed by the data acquisition unit, and the computer displays and records the torque data of the moment gyroscope detected by the static torque sensor under the working condition;
5) after the detection of a certain working condition is finished, switching the vehicle working condition simulation software to the next working condition by the computer, and then repeating the step 3) and the step 4) to obtain the moment data of the moment gyroscope under the next working condition; until the required working condition is detected.
Compared with the prior art, the test bed provided by the invention has the following beneficial effects:
1. the moment gyro can simulate various working conditions of automobile running under the computer simulation, can measure the restoring moment which can be provided by the moment gyro under various working conditions without the whole automobile test, has quick data acquisition, low cost and richer data, and provides comprehensive data support for the design and development of the moment gyro.
2. The test bed adopts a locking mechanism to enable the transmission shaft to still be static under the action of torque, and the measured torque gyro restoring torque can be more accurate and reliable.
3. The test bed is simple, is convenient to install and adjust, can be suitable for different moment gyros, and has good universality.
4. The test bed can flexibly set various test working conditions by using a computer according to actual conditions, and the validity of data is ensured.
Drawings
FIG. 1 is a structure diagram of a moment gyroscope restoring moment test bed;
FIG. 2 is a schematic diagram of a moment gyro restoring moment test bed system;
in the figure: 1-a locking block; 2-a static torque sensor; 3, a bearing seat I; 4-flange I; 5-moment gyro; 6-moment gyro mounting rack; 7-flange II; 8-bearing seat II; 9-a base; 10-moment gyro controller; 11-a computer; 12-a data collector; 13-static torque sensor connecting flange; and 14, locking the flange.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The torque gyroscope restoring moment test bed structure is shown in figure 1, and mainly comprises a locking block 1, a static torque sensor 2, a bearing seat I3, a flange I4, a torque gyroscope 5, a torque gyroscope mounting frame 6, a flange II 7, a bearing seat II 8, an iron foundation 9, a torque gyroscope controller 10, a computer 11, a data collector 12, a static torque sensor connecting flange 13 and a locking flange 14. The specific structure is described below.
The moment gyro mounting frame 6 is used for rigidly fixing the moment gyro 5 to be tested; in actual design, the moment gyroscope 5 is fixed on the mounting base through a bolt, and then the mounting base is rigidly fixed on the moment gyroscope mounting frame 6 through the bolt. A transmission shaft I is arranged on the bearing seat I3, and spline teeth are arranged at two ends of the transmission shaft I and extend out of two ends of the bearing seat I3; moment gyro mounting bracket 6 passes through the screw rigid fixation with the one end that bearing frame I3 corresponds and is equipped with flange I4, and flange I4 center is equipped with the splined hole, and I one end of transmission shaft is connected with the splined hole at I center of flange towards the spline tooth of I one end of flange through this end. The bearing seat I3 is rigidly fixed on the base 9; one side of the static torque sensor 2, which faces the bearing seat I, is rigidly connected with a static torque sensor connecting flange 13, and one end of the transmission shaft I, which faces the static torque sensor, is connected with a spline hole on the static torque sensor connecting flange 13 through spline teeth at the end; the other side of the static torque sensor 2 is rigidly connected with a locking mechanism through a screw so as to realize that the transmission shaft I can be locked under the condition of transmitting torque through the locking mechanism. Moment gyro mounting bracket 6 is equipped with flange II 7 through the fix with screw with the one end that II 8 of bearing frame correspond, and II 7 centers of flange are equipped with the splined hole, are equipped with transmission shaft II on II 8 of bearing frame, and II orientation moment gyro mounting bracket one end of transmission shaft are equipped with the spline tooth and stretch out from bearing frame II, and II should stretch out the end of transmission shaft and pass through the splined hole at II centers of spline tooth and flange.
The computer 11 is connected with a moment gyro 5 to be tested, which is to be installed on a moment gyro installation frame, through a moment gyro controller 10, various working conditions of the automobile during running are simulated by operating a vehicle working condition simulation system on the computer, and the moment gyro controller 10 controls the moment gyro 5 to work under the corresponding working conditions; the output of the static torque sensor 2 is connected with a data collector 12, the output of the data collector 12 is connected with a computer 11, and the computer 11 displays and records the torque data detected by the static torque sensor.
The moment gyro mounting frame 6 is in a suspended state after being connected with a transmission shaft on a corresponding bearing seat through flange connection discs at two ends of the moment gyro mounting frame. Therefore, the moment gyro can truly output the recovery moment of the moment gyro, and the test effectiveness is ensured.
The locking mechanism of the invention aims to keep the transmission shaft still even under the action of torque, so that the static torque sensor 2 can detect the torque conveniently, and therefore, the transmission shaft can be locked reliably. Specifically, the locking mechanism is composed of a locking flange 14 and a locking block 1, and the other side of the static torque sensor 2 is rigidly connected with the locking flange 14; the locking flange 14 is connected with the locking block 1 through the flange teeth on the locking flange to realize the locking of the transmission shaft I; the blocking block 1 is rigidly mounted on the base 9. Preferably, the locking flange is a ratchet wheel, and the locking block is a pawl matched with the ratchet wheel. By adopting the ratchet wheel and pawl structure, the locking mechanism is mature and reliable, can realize automatic locking and does not need manual participation. Of course, any other locking mechanism that can hold the drive shaft stationary may be used, such as a similar structure to the wheel brake mechanism.
The bearing seat I3 and the bearing seat II 8 are respectively and rigidly fixed on the base 9 through a bearing seat base; the bearing seat is rigidly fixed on the bearing seat base through a screw, and the bearing seat base is rigidly fixed on the base through a bolt. The locking block is rigidly fixed on the locking frame through a screw, and the locking frame is rigidly fixed on the base through a bolt. This further facilitates the mounting of the locking piece.
The base 9 is formed by machining metal iron and is installed on the ground in the form of a foundation. The stability of the base is guaranteed due to the fact that the metal iron is processed, all parts are firm and reliable after being installed on the base, vibration does not exist, and cost is not too high; meanwhile, the base is installed in a foundation mode and is almost flush with the ground, and installation and follow-up detection of all parts are facilitated.
The test bed of the invention is used for explaining that the moment gyroscope to be measured is rigidly fixed on the moment gyroscope mounting frame; the computer is connected with the moment gyro controller in a communication interface mode to realize interactive communication, a vehicle working condition simulation system (the system has a complete vehicle model and can simulate the running state of a vehicle under various working condition scenes, such as ice and snow road, curve running, emergency avoidance and the like, a control command is sent to the moment gyro controller under the working condition of a corresponding scene, the rollover moment can be automatically calculated, a performance parameter image of the moment gyro, a recovery moment and a contrast image of the rollover moment are displayed) to simulate the rollover working condition of the vehicle during running, and the moment gyro to be tested which is arranged on the moment gyro mounting frame is controlled to work in the state of the working condition of the corresponding scene by the moment gyro controller. Moment produced when the moment gyro 5 works is transmitted to the static torque sensor 2 sequentially through the moment gyro mounting frame 6, the flange connecting disc I4, the transmission shaft I and the static torque sensor connecting flange 13, the moment produced by the moment gyro is transmitted to the transmission shaft I in the test process and is locked by the locking mechanism at the transmission shaft I, the static torque sensor 2 starts to test the static moment, measured signals are sent to the data acquisition unit 12, the data acquisition unit 12 processes the data and then transmits the processed data to the computer 11, and the moment produced by the moment gyro is displayed and recorded in the computer 11. After the working condition of a certain scene is detected, switching to the working condition of the next scene by the computer to obtain the moment data of the moment gyroscope under the working condition of the next scene; and (4) until the required scene working condition is detected. The system principle of the present invention is shown in fig. 2.
Different mounting positioning holes are formed in the moment gyro mounting frame 6. The test bed can meet the torque gyros of most different models only by changing the mounting positioning holes on the torque gyro mounting frame 6, so that the test purpose is achieved, the universality is good, and the cost is saved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all the modifications or equivalent substitutions should be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a moment gyro restoring torque test bench which characterized in that: the moment gyro sensor comprises a base, wherein a locking mechanism, a static torque sensor, a bearing seat I, a moment gyro mounting frame and a bearing seat II are sequentially arranged on the same horizontal line on the base, and the moment gyro mounting frame is used for rigidly fixing a moment gyro to be measured; a transmission shaft I is arranged on the bearing seat I, and spline teeth are arranged at two ends of the transmission shaft I and extend out of two ends of the bearing seat I; a flange joint disc I is fixedly arranged at one end of the moment gyro mounting frame, which corresponds to the bearing seat I, a spline hole is formed in the center of the flange joint disc I, and one end of the transmission shaft I, which faces the flange joint disc I, is connected with the spline hole in the center of the flange joint disc I through spline teeth at the end; the bearing seat I is rigidly fixed on the base; one side of the static torque sensor, which faces the bearing seat I, is rigidly connected with a static torque sensor connecting flange, and one end of the transmission shaft I, which faces the static torque sensor, is connected with a spline hole on the static torque sensor connecting flange through spline teeth at the end; the other side of the static torque sensor is connected with a locking mechanism so as to realize that the transmission shaft I can be locked under the condition of transmitting torque through the locking mechanism; a flange II is fixedly arranged at one end of the moment gyro mounting frame, which corresponds to the bearing seat II, a spline hole is formed in the center of the flange II, a transmission shaft II is arranged on the bearing seat II, spline teeth are arranged at one end, facing the moment gyro mounting frame, of the transmission shaft II and extend out of the bearing seat II, and the extending end of the transmission shaft II is connected with the spline hole in the center of the flange II through the spline teeth;
the computer is connected with a moment gyro to be tested and to be installed on a moment gyro installation frame through a moment gyro controller, various working conditions of the automobile during running are simulated by running vehicle working condition simulation software on the computer, and the moment gyro controller controls the moment gyro to work under the corresponding working conditions; the output of the static torque sensor is connected with a data collector, the output of the data collector is connected with a computer, and the computer displays and records the torque data detected by the static torque sensor.
2. The moment gyro restoring moment test stand of claim 1, characterized in that: the moment gyro mounting frame is in a suspended state after being connected with the transmission shaft on the corresponding bearing seat through flange connection discs at two ends of the moment gyro mounting frame.
3. The moment gyro restoring moment test stand of claim 1, characterized in that: the locking mechanism is composed of a locking flange and a locking block, and the other side of the static torque sensor is rigidly connected with the locking flange; the locking flange is connected with the locking block through the flange teeth on the locking flange so as to realize the locking of the transmission shaft I; the locking piece is installed on the base.
4. The moment gyro restoring moment test stand of claim 3, characterized in that: the locking flange is a ratchet wheel, and the locking block is a pawl matched with the ratchet wheel.
5. The moment gyro restoring moment test stand of claim 3, characterized in that: the bearing seat I and the bearing seat II are respectively and rigidly fixed on the base through a bearing seat base; the locking block is rigidly fixed on the locking frame, and the locking frame is rigidly fixed on the base.
6. The moment gyro restoring moment test stand of claim 1, characterized in that: the base is formed by processing metal iron and is installed on the ground in the form of a foundation.
7. A method for measuring a moment recovered by a moment gyro is characterized by comprising the following steps: the method comprises the following steps of,
1) acquiring a moment gyro restoring moment test stand according to any one of claims 1 to 6;
2) rigidly fixing the moment gyroscope to be measured on a moment gyroscope mounting frame;
3) running vehicle working condition simulation software on a computer to simulate a certain working condition when the automobile runs, and controlling the moment gyro to work under the corresponding working condition by the moment gyro controller;
4) the locking mechanism is used for enabling the transmission shaft I to be static, then the static torque sensor senses the torque transmitted by the transmission shaft I, the torque is transmitted to the computer after being processed by the data acquisition unit, and the computer displays and records the torque data of the moment gyroscope detected by the static torque sensor under the working condition;
5) after the detection of a certain working condition is finished, switching the vehicle working condition simulation software to the next working condition by the computer, and then repeating the step 3) and the step 4) to obtain the moment data of the moment gyroscope under the next working condition; until the required working condition is detected.
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