CN113654697A - Special torque measurement system for butt lock drive combination and in-situ calibration method - Google Patents
Special torque measurement system for butt lock drive combination and in-situ calibration method Download PDFInfo
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- CN113654697A CN113654697A CN202110890850.3A CN202110890850A CN113654697A CN 113654697 A CN113654697 A CN 113654697A CN 202110890850 A CN202110890850 A CN 202110890850A CN 113654697 A CN113654697 A CN 113654697A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/26—Devices for measuring efficiency, i.e. the ratio of power output to power input
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/006—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring work or mechanical power or mechanical efficiency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
- G01L3/242—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying torque and velocity
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a torque measurement system special for a butt lock drive combination and an in-situ calibration method, wherein the device comprises the following steps: the device comprises an upper computer, a torque accurate loading module, a torque overload protection module, a torque measurement module, a torque and rotating speed sensor in-situ calibration module, a torque transmission module, a high and low temperature environment controller, a support frame and an experiment platform. In the calibration, the torque and rotation speed sensor is calibrated by using a standard sensor. In the torque measurement, under the temperature of each point, the measured value of a torque and rotation speed sensor is recorded, and the torque set value is compared with the measured value of the torque and rotation speed sensor, so that the torque output of the butt lock drive combination under the measured point can be obtained, and the test of the butt lock drive combination is completed. The invention can calibrate the torque and rotation speed sensor without disassembling the torque and rotation speed sensor, and can measure the output torque characteristic of the unlocking drive combination under the conditions of high temperature and low temperature of-70-100 ℃.
Description
Technical Field
The invention relates to the field of torque measurement of a butt lock drive combination, in particular to a special torque measurement system for the butt lock drive combination and an in-situ calibration method.
Background
The aerospace industry is the most challenging high-tech industry in the world today that is the most capable of pulling relevant industries into development. The development of the aerospace industry is a mark of the national science and technology level, and is a measure of enhancing the national economic strength and national defense strength. The intersection and butt joint of Tiangong I and Shenzhou eight is completed satisfactorily, and marks the generation of time for entering the space station in China. However, the space docking technology in China has a considerable gap compared with that in America and Russia, and the ground test calibration technology for the torque performance of the key components of the space docking structure is a very outstanding technical problem.
In the space station task, the docking mechanism is widely applied to manned airships, cargo airships, core experiment cabins, experiment cabins I, experiment cabins II, optical cabins and the like, a large number of single machine test tasks exist in the production and assembly processes of docking, the accuracy and the effectiveness of the test directly relate to the product quality of the docking mechanism, and the convenience and the stability of the test restrict the production capacity of the docking mechanism and even relate to the promotion of the construction of the national space station.
Under the extreme temperature environment in space, the performance of key components in the space docking mechanism can be greatly changed. For example, the output torque of the butt lock driving combination is reduced by 10 to 15 percent at +/-60 ℃ compared with that at 20 ℃. As China enters the age of space stations, various space activities are gradually developed, and higher requirements are put forward on space docking mechanisms. At present, the primary ground test work is carried out by simulating the environment of (-60) DEG C, and in order to ensure that the space docking mechanism can normally work in the environment of (-70-100) DEG C, the torque measurement work of key components of the space docking mechanism is carried out on the ground is an essential loop.
At present, in order to ensure the measurement accuracy of a torque and rotation speed sensor, the sensor needs to be periodically disassembled for inspection, and deviation caused by installation and environmental factors can occur when the sensor is installed in a measuring device again; the device needs to be adjusted and installed again after verification, so that the verification and maintenance time of the device is long, meanwhile, in order to increase the reliability of the spacecraft, products of a docking mechanism are selected finely, tested repeatedly in a large amount, and cost is replaced by using a large amount of time and funds, China builds space station construction before 2022 years, subsequent space station tasks are increased rapidly, and obviously, the mode seriously delays the progress of the space station tasks.
In summary, the torque measuring device performs the test of the torque performance of the butt lock driving combination at (-70-100) DEG C, and there is room for improvement in the calibration method of the torque and rotation speed sensor in the measuring device. How to realize the calibration of the torque and rotation speed sensor in the special torque measuring device for the unlocking drive combination, which has the advantages of wide temperature range (-70-100) DEG C, high reliability and high efficiency, becomes a prominent problem to be solved urgently.
Disclosure of Invention
In view of the shortcomings of the background art, the present invention provides a torque measurement system and an in-situ calibration method for a docking lock driving assembly.
In order to achieve the above object, the present invention provides a torque measuring system dedicated for a docking lock driving assembly, comprising: the device comprises an upper computer, a torque accurate loading module, a torque overload protection module, a torque measurement module, a torque and rotating speed sensor in-situ calibration module, a torque transmission module, a high and low temperature environment controller, a support frame and an experiment platform;
the upper computer is used for precisely controlling the torque measuring device special for the butt lock driving combination, recording and processing torque measuring and calibrating data and displaying and recording information of operators and operation processes;
the torque precision loading module comprises: an electric brake and a PID controller; the electric brake provides load for the special torque measuring device for the butt lock driving combination by applying brake torque to the transmission shaft, and the PID controller adjusts the brake torque of the electric brake by comparing a system output torque set value with a measured value of the torque rotating speed sensor in real time, so that the aim of accurate torque loading is fulfilled;
the torque overload protection module includes: an electric brake and a limit switch; when the torque output by the butt lock driving combination exceeds a set torque value, the electric brake can remove the braking torque applied to the torque transmission shaft, so that the special torque measuring device for the butt lock driving combination loses load, and meanwhile, the limit switch can send a current signal to the upper computer to control the butt lock driving combination to stop loading so as to achieve the purpose of torque overload protection of the special torque measuring device for the butt lock driving combination;
the torque measurement module adopts a tall and tall torque and rotating speed sensor to realize torque measurement of the special torque measurement device for the butt lock driving combination;
the torque and rotation speed sensor in-situ calibration module adopts a standard torque sensor of Japan Enepars, and the Enepars standard torque sensor is additionally arranged in a special torque measuring device shafting for the butt lock driving combination, so that the aim of on-site calibration of the torque and rotation speed sensor is fulfilled without disassembling the torque and rotation speed sensor for measurement;
the torque transmission module includes: a flexible coupling and a rigid drive shaft; the flexible coupling is used for connecting the transmission shaft with the torque and rotating speed sensor for measurement and the transmission shaft with the standard torque sensor; the rigid transmission shaft is made of a material with a small heat conduction coefficient and a small elastic modulus change along with temperature, and is used for transmitting torque in a shaft system;
the high and low temperature environment controller includes: the system comprises a box body structure, an air conditioning system, a heating and refrigerating system and a measurement and control system; the box structure includes: a peripheral box plate, a sealing door and a heat insulation material; the air conditioning system ensures that the humidity and the air pressure in the box body are constant by filling nitrogen into the box body; the heating and refrigerating system adopts a nickel-chromium alloy stainless steel finned tube to heat and a compressor to refrigerate to realize the adjustment of the internal room temperature of the box body; the measurement and control system controls the heating and refrigerating system to heat or cool by comparing the difference between the set temperature and the room temperature in the box;
the support frame and the experiment platform comprise: the device comprises a T-shaped groove working platform, a support and a micro-displacement adjusting platform; the T-shaped groove working platform is used for installing a bracket and a high-low temperature environment controller; the bracket is made of a material with a smaller thermal expansion coefficient and is used for supporting the butt joint lock driving combination; the micro-displacement adjusting platform is used for supporting the torque sensor and the electric brake.
According to the special torque measuring system for the butt lock driving combination, the micro-displacement adjusting platform is convenient for adjusting the positions of the torque sensor and the electric brake when the special torque measuring device for the butt lock driving combination is assembled, so that the coaxiality of a shafting of the whole device meets the precision requirement.
According to the method for measuring the torque output of the drive combination of the butt lock, the special torque measuring system for the drive combination of the butt lock is adopted, firstly, cables of the drive combination of the butt lock, a torque rotating speed sensor, an upper computer and each module are well connected, the power line is guaranteed to be well grounded, and a measurement and control system is debugged to enable the measurement and control system to work normally; the coaxiality between the shafting is measured by adopting a precision mechanical arm, and the coaxiality of the shafting meets the assembly requirement by adjusting a micro-displacement adjusting platform below the torque sensor and the electric brake;
after an initial torque output value is set, the device is loaded by the drive of the butt lock, and the PID controller adjusts the braking torque output by the electric brake by comparing the difference value between a torque set value and the measured value of the torque rotating speed sensor to finish the accurate loading of the torque; then recording the measured value of the torque and rotation speed sensor at each temperature measuring point; by comparing the torque set value with the measured value of the torque rotating speed sensor, the torque output efficiency of the butt lock drive combination at different temperature measuring points can be obtained, and the test of the butt lock drive combination is completed.
The torque and rotation speed sensor in-situ calibration method adopts the special torque measurement system for the butt lock drive combination, firstly, cables of a butt lock drive, the torque and rotation speed sensor, an upper computer and each module are well connected, the power line is guaranteed to be well grounded, and a measurement and control system is debugged to enable the system to normally work; a standard torque sensor is additionally arranged in a shaft system, a precision mechanical arm is adopted to measure the coaxiality between the shaft systems, and the coaxiality of the shaft system meets the assembly requirement by adjusting a micro-displacement adjusting platform below the torque sensor and the electric brake;
after an initial torque output value is set, the device is loaded by a butt lock drive, and a PID controller adjusts the braking torque output by an electric brake by comparing a torque set value with a difference value of a standard torque sensor to finish accurate loading of the torque; then, under each torque measuring point, recording a torque measuring value of the torque rotating speed sensor and a torque measuring value of the standard torque sensor; and subtracting the value of the standard torque sensor from the torque value of the torque rotating speed sensor to obtain the indication error of the torque rotating speed sensor under each torque measuring point, and finishing the calibration of the torque rotating speed sensor.
A butt lock drive combination dedicated torque measurement device comprising: the device comprises an I-steel supporting seat, a T-shaped groove experiment platform, an internal supporting frame, a high-low temperature environment controller, a torque transmission shaft, an airtight bearing, a coupler, a torque and rotation speed sensor, an optical axis, a standard torque sensor, an electric brake, a micro-displacement adjusting platform and a brake fixing base;
the I-shaped steel supporting seat is fixed on the T-shaped groove experiment platform;
the internal support frame is fixed on an internal bottom plate of the high-low temperature environment controller and is used for supporting the butt lock driving combination;
the butt joint lock driving combination is combined with a torque transmission shaft;
the torque transmission shaft passes through the high-low temperature environment controller through an airtight bearing;
the high-low temperature environment controller is fixed on the T-shaped groove experiment platform;
the torque transmission shaft is connected with the torque and rotation speed sensor through a coupler and then connected with the standard torque sensor through an optical axis and the coupler;
the electric brake, the optical shaft and the coupling are connected with a standard torque sensor, and the torque transmission shaft extends into the electric brake;
the micro-displacement adjusting platform is connected with the torque and rotating speed sensor, the standard torque sensor and the I-shaped steel supporting base;
the brake fixing base is connected with the electric brake and connected with the T-shaped groove experiment platform.
The utility model provides a special torque measurement device of butt joint lock drive combination, wherein, T type groove experiment platform contains the strengthening rib to this stability that increases whole experiment platform prevents that whole machinery from producing resonance phenomenon and influences the experimental result.
Compared with the prior art, the invention has the technical beneficial effects that:
1. the torque measuring system special for the butt lock driving combination can test the torque performance of the butt lock driving combination in a high-low temperature environment of (-70-100) DEG C.
2. The in-situ calibration method can realize the in-situ calibration of the torque and rotation speed sensor in the whole device under the condition that the torque and rotation speed sensor is not disassembled.
3. The dynamic calibration of the whole measuring range is carried out on line, the standard sensor is connected with the measured torque and rotating speed sensor in series, the dynamic calibration is realized, and the whole measuring range accurate correction can be carried out on the measured rotating speed sensor.
4. The torque accurate loading module adopts a PID controller, and adjusts the braking torque of the electric brake by comparing the set torque value output by the system with the measured value of the torque rotating speed sensor in real time, thereby realizing the purpose of torque accurate loading.
5. The high-low temperature environment controller adopts a nitrogen gas seal technology, ensures the stability of the environment humidity and the air pressure in the box body by filling nitrogen gas into the box body, and can effectively prevent the heat of the external environment from diffusing to the inside of the high-low temperature experiment environment controller.
Drawings
The torque measuring system and the in-situ calibration method special for the butt lock driving combination are provided by the following embodiments and the attached drawings.
FIG. 1 is a front view of the overall construction of the present invention;
FIG. 2 is a front view of the structure of the measurement process of the present invention;
FIG. 3 is a schematic of a standard sensor of the present invention;
FIG. 4 is a schematic diagram of the upper computer control cabinet of the present invention;
FIG. 5 is a schematic view of the electric brake of the present invention;
FIG. 6 is a schematic view of a T-slot experimental platform of the present invention;
FIG. 7 is an experimental flow chart of the present invention;
in the figure: 1. a high and low temperature controller control panel; 2. an inner support frame; 3. a high and low temperature environment controller; 4. A coupling; 5. a torque and rotation speed sensor; 6. a standard torque sensor; 7. an electric brake; 8. a brake fixing base; 9. a butt joint lock drive combination; 10. an airtight bearing; 11. a torque transmission shaft; 12. a micro-displacement adjusting platform; 13. an optical axis; 14. i-shaped steel supporting seats; 15. a T-shaped groove experiment platform; 16. a computer control cabinet; 17. and (5) reinforcing ribs.
Detailed Description
The torque measuring system and the in-situ calibration method dedicated to the butt lock drive combination according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, an i-steel support seat 14 in the invention is fixed on a T-shaped groove experiment platform 15; the internal support frame 2 is fixed on an internal bottom plate of the high-low temperature environment controller 3 and is used for supporting the butt lock driving combination 9; the butt lock driving combination 9 is combined with a transmission shaft 11; the transmission shaft 11 passes through the high-low temperature environment controller 3 through the airtight bearing 10; the high-low temperature environment controller 3 is fixed on the T-shaped groove experiment platform 15; the transmission shaft 11 is connected with the torque and rotation speed sensor 5 through the coupler 4, and then is connected with the standard torque sensor 6 through the optical axis 13 and the coupler 4; the electric brake 7, the optical axis 13 and the coupling 4 are connected with the standard sensor 6, and the transmission shaft 11 extends into the electric brake 7; the micro-displacement platform 12 is connected with the torque and rotation speed sensor 5; the micro-displacement platform 12 is connected with the standard torque sensor 6; the micro-displacement platform 12 is connected with an I-shaped steel support base 14; the brake fixing base 8 is connected with the electric brake 7; the I-shaped steel supporting seat 14 is connected with a T-shaped groove experiment platform 15; the brake fixing base 8 is connected with a T-shaped groove experiment platform 15; all cables of the present invention are connected to the computer control cabinet 16 as shown in fig. 4.
As shown in fig. 2, which is a torque measuring device in a torque measuring state, it can be seen that the non-standard sensor 6 is shown in fig. 3, which only has the optical axis 13, clearly showing that the in-situ calibration method of the present invention can calibrate the torque and rotation speed sensor without disassembling the torque and rotation speed sensor 5, and when the torque and rotation speed sensor 5 needs to be calibrated again, the standard sensor 6 is directly installed.
As shown in fig. 5, the electric brake has a torque overload protection function, when the torque is too large, the electric brake will remove the braking torque, and at the same time, the limit switch will send a current signal to the upper computer to control the docking lock driving combination to stop loading, so as to achieve the purpose of torque overload protection of the torque measuring device special for the docking lock driving combination;
as shown in FIG. 6, the T-shaped groove experiment platform 15 is provided with the reinforcing ribs 17 in the T-shaped groove experiment platform 15 to increase the stability of the whole experiment platform and prevent the resonance phenomenon of the whole machine from affecting the experiment result.
The working process of the invention is shown in fig. 7, and the specific implementation steps are as follows:
1. measuring output torque of a butt joint lock driving combination:
1) firstly, cables of a butt joint lock drive, a torque and rotation speed sensor, an upper computer and each module are well connected, a power line is guaranteed to be well grounded, and a measurement and control system is debugged to enable the system to work normally;
2) setting the temperature of the high-low temperature controller to be 20 ℃, and connecting the shafting of the measuring device according to requirements after the temperature in the box is stabilized at 20 ℃ to ensure that the whole measuring system can normally work;
3) the coaxiality between the shafting is measured by adopting a precision mechanical arm, and the coaxiality of the shafting meets the precision requirement by adjusting the torque sensor and the micro-displacement adjusting platform below the electric brake.
4) After an initial torque output value is set, the device is loaded by the drive of the butt lock, and the braking torque output by the electric brake is adjusted to finish accurate loading of the torque.
5) Setting temperature parameters of the high-low temperature controller, taking 20 ℃ as a step length, sequentially increasing (or decreasing) the temperature of the high-low temperature environment experiment box to 40 ℃, 60 ℃, 80 ℃, 100 ℃, 0 ℃, 20 ℃, 40 ℃ and 60 ℃, repeating the steps 3) to 4), and recording the measured value of the torque and rotation speed sensor at each temperature measuring point.
2. The in-situ calibration method comprises the following steps:
1) the temperature of the laboratory and the high-low temperature test box is set to be 20 ℃, and the whole set of device is connected as required when the temperature in the box is stabilized at 20 ℃, so that the normal operation of the whole test system is ensured.
2) A standard torque sensor is additionally arranged in a shaft system, a precision mechanical arm is adopted to measure the coaxiality between the shaft systems, and the coaxiality of the shaft systems meets the assembly requirement by adjusting a micro-displacement adjusting platform below the torque sensor and the electric brake.
3) After the initial torque output value is set, the device is loaded by the drive of the butt lock.
4) And at each torque measuring point, recording the torque measuring value of the torque rotating speed sensor and the torque measuring value of the standard torque sensor. And subtracting the value of the standard torque sensor from the torque value of the torque rotating speed sensor to obtain the indication error of the torque rotating speed sensor at each torque measuring point, and finishing the calibration of the torque rotating speed sensor.
5) The standard sensor is disassembled, and the optical axis is installed in the device.
Therefore, the torque output efficiency of the butt lock drive combination at different temperature measurement points can be obtained by comparing the torque set value with the measurement value of the torque rotating speed sensor at each temperature point, and the test of the butt lock drive combination is completed.
Under different moments, indication errors of all points are recorded, and the torque and rotation speed sensor is calibrated, so that the torque and rotation speed sensor is calibrated under the condition of not being disassembled.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A torque measurement system dedicated to a docking lock drive combination, comprising: the device comprises an upper computer, a torque accurate loading module, a torque overload protection module, a torque measurement module, a torque and rotating speed sensor in-situ calibration module, a torque transmission module, a high and low temperature environment controller, a support frame and an experiment platform;
the upper computer is used for precisely controlling the torque measuring device special for the butt lock driving combination, recording and processing torque measuring and calibrating data and displaying and recording information of operators and operation processes;
the torque precision loading module comprises: an electric brake and a PID controller; the electric brake provides load for the special torque measuring device for the butt lock driving combination by applying brake torque to the transmission shaft, and the PID controller adjusts the brake torque of the electric brake by comparing a system output torque set value with a measured value of the torque rotating speed sensor in real time, so that the aim of accurate torque loading is fulfilled;
the torque overload protection module includes: an electric brake and a limit switch; when the torque output by the butt lock driving combination exceeds a set torque value, the electric brake can remove the braking torque applied to the torque transmission shaft, so that the special torque measuring device for the butt lock driving combination loses load, and meanwhile, the limit switch can send a current signal to the upper computer to control the butt lock driving combination to stop loading, so that the purpose of torque overload protection of the special torque measuring device for the butt lock driving combination is achieved;
the torque measurement module adopts a tall and tall torque and rotating speed sensor to realize torque measurement of the special torque measurement device for the butt lock driving combination;
the torque and rotation speed sensor in-situ calibration module adopts a standard torque sensor of Japan Enepars, and the Enepars standard torque sensor is additionally arranged in a special torque measuring device shafting for the butt lock driving combination, so that the aim of on-site calibration of the torque and rotation speed sensor is fulfilled without disassembling the torque and rotation speed sensor for measurement;
the torque transmission module includes: a flexible coupling and a rigid drive shaft; the flexible coupling is used for connecting the transmission shaft with the torque and rotating speed sensor for measurement and the transmission shaft with the standard torque sensor; the rigid transmission shaft is made of a material with a small heat conduction coefficient and a small elastic modulus change along with temperature, and is used for transmitting torque in a shaft system;
the high and low temperature environment controller includes: the system comprises a box body structure, an air conditioning system, a heating and refrigerating system and a measurement and control system; the box structure includes: a peripheral box plate, a sealing door and a heat insulation material; the air conditioning system ensures that the ambient humidity and the air pressure in the box body are constant by filling nitrogen into the box body; the heating and refrigerating system adopts a nickel-chromium alloy stainless steel finned tube to heat and a compressor to refrigerate to realize the regulation of the room temperature in the box body; the measurement and control system controls the heating and refrigerating system to heat or cool by comparing the difference between the set temperature and the room temperature in the box;
the support frame and the experiment platform comprise: the device comprises a T-shaped groove working platform, a support and a micro-displacement adjusting platform; the T-shaped groove working platform is used for installing a support and a high-low temperature environment controller; the bracket is made of a material with a small thermal expansion coefficient and is used for supporting the butt joint lock driving combination; the micro-displacement adjusting platform is used for supporting the torque sensor and the electric brake.
2. The system for measuring the torque specially used for the drive combination of the butt lock as claimed in claim 1, wherein the micro-displacement adjusting platform facilitates the adjustment of the positions of the torque sensor and the electric brake when the device for measuring the torque specially used for the drive combination of the butt lock is assembled, so that the coaxiality of the shafting of the whole set of device meets the precision requirement.
3. A method for measuring the torque output of a drive combination of a butt lock adopts the torque measuring system special for the drive combination of the butt lock as claimed in claim 1, and is characterized in that cables of the drive combination of the butt lock, a torque and rotation speed sensor, an upper computer and each module are well connected, a power line is guaranteed to be well grounded, and a measurement and control system is debugged to enable the system to work normally; the coaxiality between the shafting is measured by adopting a precision mechanical arm, and the coaxiality of the shafting meets the assembly requirement by adjusting a micro-displacement adjusting platform below the torque sensor and the electric brake;
after an initial torque output value is set, the device is loaded by a butt lock drive, and a PID controller adjusts the braking torque output by an electric brake by comparing the difference value of a torque set value and the measured value of a torque rotating speed sensor to finish the accurate loading of the torque; then recording the measured value of the torque and rotation speed sensor at each temperature measuring point; by comparing the torque set value with the measured value of the torque rotating speed sensor, the torque output efficiency of the butt lock drive combination at different temperature measuring points can be obtained, and the test of the butt lock drive combination is completed.
4. The in-situ calibration method of the torque and rotation speed sensor adopts the special torque measuring system for the butt lock drive combination as claimed in claim 1, and is characterized in that cables of a butt lock drive, the torque and rotation speed sensor, an upper computer and each module are firstly well connected, a power line is guaranteed to be well grounded, and a measurement and control system is debugged to enable the system to normally work; a standard torque sensor is additionally arranged in a shaft system, a precision mechanical arm is adopted to measure the coaxiality between the shaft systems, and the coaxiality of the shaft system meets the assembly requirement by adjusting a micro-displacement adjusting platform below the torque sensor and the electric brake;
after an initial torque output value is set, the device is loaded by a butt lock drive, and a PID controller adjusts the braking torque output by an electric brake by comparing a torque set value with a difference value of a standard torque sensor to finish accurate loading of the torque; then, under each torque measuring point, recording a torque measuring value of the torque rotating speed sensor and a torque measuring value of the standard torque sensor; and subtracting the value of the standard torque sensor from the torque value of the torque rotating speed sensor to obtain the indication error of the torque rotating speed sensor at each torque measuring point, and finishing the calibration of the torque rotating speed sensor.
5. A special torque measuring device for a butt lock drive combination is characterized by comprising: the device comprises an I-steel supporting seat, a T-shaped groove experiment platform, an internal supporting frame, a high-low temperature environment controller, a torque transmission shaft, an airtight bearing, a coupler, a torque and rotation speed sensor, an optical axis, a standard torque sensor, an electric brake, a micro-displacement adjusting platform and a brake fixing base;
the I-shaped steel supporting seat is fixed on the T-shaped groove experiment platform;
the internal support frame is fixed on an internal bottom plate of the high-low temperature environment controller and is used for supporting the butt lock driving combination;
the butt joint lock driving combination is combined with a torque transmission shaft;
the torque transmission shaft passes through the high-low temperature environment controller through an airtight bearing;
the high-low temperature environment controller is fixed on the T-shaped groove experiment platform;
the torque transmission shaft is connected with the torque and rotation speed sensor through a coupler and then connected with the standard torque sensor through an optical axis and the coupler;
the electric brake, the optical axis and the coupler are connected with a standard torque sensor, and the torque transmission shaft extends into the electric brake;
the micro-displacement adjusting platform is connected with the torque and rotating speed sensor, the standard torque sensor and the I-shaped steel supporting base;
the brake fixing base is connected with the electric brake and connected with the T-shaped groove experiment platform.
6. The special torque measuring device for the butt lock driving combination according to claim 5, wherein the T-shaped groove test platform comprises a reinforcing rib, so that the stability of the whole test platform is improved, and the resonance phenomenon generated by the whole machine is prevented from influencing the test result.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485503A (en) * | 2022-01-04 | 2022-05-13 | 中国航空工业集团公司北京长城计量测试技术研究所 | Multifunctional multi-target circular motion standard device |
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| CN115901081A (en) * | 2022-08-03 | 2023-04-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Sine torque calibration device and method |
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| CN115855337A (en) * | 2023-02-17 | 2023-03-28 | 深圳市铱程机电设备有限公司 | Motor axial torque detection device and detection method thereof |
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