CN109029813B - Electric cylinder push-pull force testing system and method based on component force support - Google Patents
Electric cylinder push-pull force testing system and method based on component force support Download PDFInfo
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- CN109029813B CN109029813B CN201810843205.4A CN201810843205A CN109029813B CN 109029813 B CN109029813 B CN 109029813B CN 201810843205 A CN201810843205 A CN 201810843205A CN 109029813 B CN109029813 B CN 109029813B
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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
- G01L5/0061—Force sensors associated with industrial machines or actuators
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Abstract
The invention discloses a component force support-based electric cylinder push-pull force test system and a test method, and mainly solves the technical problem that the push-pull force of a high-power electric cylinder is difficult to measure in the prior art.
Description
Technical Field
The invention relates to a component force support-based electric cylinder push-pull force testing system and a component force support-based electric cylinder push-pull force testing method.
Background
The electric cylinder is a device for converting the rotary motion of the motor into linear motion, has the advantages of accurately controlling the position, the speed and the thrust, and is widely applied to the fields of mechanical automation, industrial robots, automobiles and the like. The real-time dynamic measurement of the push-pull force in the process of the motion of the electric cylinder is an important test link in the process of developing and producing the electric cylinder. The thrust test of the electric cylinder requires that the electric cylinder structure cannot be broken, the maximum thrust of the high-power vertical electric cylinder reaches more than 100 tons, but the maximum diameter of the lug ring capable of being provided with the shaft pin is only 70 mm. Therefore, the problem to be solved is to satisfy the installation requirement and to be able to bear the push-pull force of the electric cylinder. Therefore, the large-range push-pull force measuring device of the electric cylinder based on the component force support is designed, the main principle is that a large-range push-pull force is decomposed to 8 3-axis pull pressure sensors by utilizing a triangular component force principle, and each component force is in the range of the sensor range, so that the effective measurement of the large-tonnage variation force is realized;
document CN 200520045197.7 discloses an electric cylinder test bed, in which an electric cylinder support and a hydraulic device support with inclined struts are arranged at two ends of a bottom plate, a pin is fixed at the inner side of the electric cylinder support through a pin transverse plate, an electric cylinder is sleeved on the pin, the hydraulic device is fixed on the hydraulic device support, a sensor is connected between the hydraulic device and the electric cylinder, the output end of the sensor is connected with a data processing and displaying device, and the electric cylinder is further connected with an electric control box. The control loop of the electric control box consists of a main loop, a relay control loop and an auxiliary loop;
document 201510924738.1 discloses an electric cylinder push-pull force limit testing mechanism, which includes a base for mounting an electric cylinder, a support disposed on the base, a guide rod slidably fitted to the support and coaxial with a telescopic rod of the electric cylinder, a pull pressure sensor connected to the guide rod, and a first spring sleeved on the guide rod and located between the support and the pull pressure sensor, wherein a first gasket fitted to an end of the first spring is disposed at an end of the guide rod close to the pull pressure sensor.
Disclosure of Invention
The invention aims to solve the technical problem that the push-pull force of a high-power electric cylinder is difficult to measure in the prior art, and provides a novel component force support-based electric cylinder push-pull force test system which has the characteristic of being capable of solving the problem of push-pull force test of the high-power electric cylinder. The second technical problem to be solved by the present invention is to provide a method for testing the push-pull force of an electric cylinder based on a component force support, which corresponds to the first technical problem to be solved.
In order to solve one of the above technical problems, the technical solution adopted by the present invention is as follows: a push-pull force test system of an electric cylinder based on a component force support comprises an undercarriage, a component force test device and the electric cylinder, wherein a push rod ear ring of the electric cylinder is connected with the component force test device, the component force test device is connected with one end of the undercarriage, one end of the undercarriage is pushed and pulled through the electric cylinder, meanwhile, the push-pull force of the electric cylinder is measured through the component force test device, and a driver of the electric cylinder and the component force test device are both connected with a measurement and control computer.
Further, preferably, the other end of the undercarriage is hinged to the first base, and the bottom of the electric cylinder body is hinged to the second base.
Preferably, the force component testing device comprises a measuring assembly connected with the landing gear and a force component assembly connected with the measuring assembly, and the force component assembly is connected with a push rod lug of the electric cylinder.
More preferably, the component force assembly comprises a shaft connected with a push rod earring of the electric cylinder, at least two component force blocks are arranged on the shaft, at least four supports are arranged on each component force block, each support is connected with a triaxial pressure sensor, and the triaxial pressure sensors are connected with the undercarriage simultaneously.
More preferably, the number of the component force blocks is preferably two, the two component force blocks are respectively fixed at two ends of the shaft, the number of the support seats on the component force block is preferably four, the four support seats are paired in pairs, and the support seats of each pair are respectively arranged at two sides of the component force block.
More preferably, the two supports of each pair are connected by a pin passing through the force distribution block.
Preferably, the driver of the electric cylinder is connected with the measurement and control computer through a CAN bus.
More preferably, the measurement and control computer is connected with all the three-axis pressure sensors through a data acquisition card.
A method for testing the push-pull force of an electric cylinder based on a component force support comprises the following steps,
the method comprises the following steps: connecting the component force testing device with the undercarriage, and connecting all three-axis pressure sensors of the component force testing device with the undercarriage;
step two: mounting the tested electric cylinder on the undercarriage, and connecting a push rod earring of the electric cylinder with a shaft of the component force testing device;
step three: connecting a CAN card of a measurement and control computer and a CAN interface of a driver of an electric cylinder to the same CAN bus;
step IV: connecting a data acquisition card of a measurement and control computer with all three-axis pressure sensors of a separation testing device through data cables;
step five: starting a main power supply, starting the whole system for self-checking, starting a measurement and control computer and starting a data acquisition card to acquire data of the three-axis pressure sensor;
step (c): the control method comprises the steps of sending an instruction to a driver of the electric cylinder through the measurement and control computer, controlling the extension and contraction of a push rod of the electric cylinder, displaying the push-pull force of the electric cylinder in real time through the measurement and control computer, and displaying the push-pull force F of the electric cylinderCombination of Chinese herbsCalculated from data from all three-axis pressure sensors, the formula is as follows:
The invention has the beneficial effects that: the invention can bear the push-pull force of the high-power electric cylinder through the component force testing device, effectively measure the push-pull force of the electric cylinder when the landing gear is pushed or pulled in real time, and calculate and display the push-pull force data through the measurement and control computer, thus having high measurement precision.
Drawings
FIG. 1 is a schematic structural diagram of an electric cylinder push-pull force testing system based on a component force support according to the present invention;
fig. 2 is a schematic structural diagram of a component force testing device of an electric cylinder push-pull force testing system based on a component force support according to the present invention;
fig. 3 is a test system diagram of an electric cylinder push-pull force test system based on a component force support according to the present invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, a component force support-based electric cylinder push-pull force test system includes an undercarriage 1, a component force test device 2, and an electric cylinder 3, wherein a push rod ear 32 of the electric cylinder 3 is connected to the component force test device 2, the component force test device 2 is connected to one end of the undercarriage 1, one end of the undercarriage 1 is pushed or pulled by the electric cylinder 3, and the component force test device 2 measures the push-pull force of the electric cylinder 3, and a driver of the electric cylinder 3 and the component force test device 2 are both connected to a measurement and control computer 4;
the other end of the undercarriage 1 is hinged with a first base 11, and the bottom of the body of the electric cylinder 3 is hinged with a second base 31;
as shown in fig. 2, the force component testing device 2 includes a measuring component connected to the landing gear 1 and a force component connected to the measuring component, the force component is connected to the push rod ear 32 of the electric cylinder 3, the force component includes a shaft 21 connected to the push rod ear 32 of the electric cylinder 3, the size of the force component is small, the diameter of the shaft 21 is not greater than 70mm, the installation requirement of the push rod ear 32 of the electric cylinder is met, the influence of the self weight of the electric cylinder 3 on the measurement is avoided, the push-pull force of the electric cylinder 3 can be directly measured, the measurement accuracy is improved, at least two force component blocks 22 are arranged on the shaft 21, preferably two force component blocks 22 are arranged, the two force component blocks 22 are triangular cylindrical, the two force component blocks 22 are respectively fixed at two ends of the shaft 21, one end of the shaft 21 penetrates through the triangular side 221 on one side of the force component block 22 and is fixed to the force component, at least four supporting seats 23 are arranged on each component force block 22, the supporting seats 23 are preferably arranged on the component force block 22, the four supporting seats 23 are paired in pairs, the supporting seats 23 of each pair are respectively arranged on two sides of the component force block 22, the two supporting seats 23 of each pair are connected through a shaft pin 24 penetrating through the component force block, two ends of the shaft pin 24 penetrate out of two triangular side surfaces 221 of the component force block 22, one supporting seat 23 is fixed at each end of the shaft pin 24, each supporting seat 23 is connected with a three-axis pressure sensor 25, the number of the three-axis pressure sensors 25 is preferably eight, and the three-axis pressure sensors 25 are simultaneously connected with the undercarriage 1;
the component force block 22 selects a triangular shape to form a triangular component force, the push-pull force of the electric cylinder 3 is decomposed to two component force blocks 22, each component force block 22 further decomposes the force to four respective support seats 23, each support seat 23 further decomposes the force to one respective three-axis pressure sensor 25, so that the three-axis pressure sensors 25 are subjected to forces from the directions of the x axis, the y axis and the z axis, the resultant forces of the 8 three-axis pressure sensors 25 in the directions of the x axis, the y axis and the z axis are calculated, so that the push-pull force of the electric cylinder 3 is calculated, the push-pull force of the electric cylinder 3 is more than 100 tons, the range of each three-axis pressure sensor 25 is 20 tons, and the total range of the 8 three-axis pressure sensors 25 is 160 tons, so that the maximum push-pull force of the electric cylinder 3 can reach 160 tons, and the requirement of measuring range;
further, as shown in fig. 3, the driver of the electric cylinder 3 is connected to a measurement and control computer 4 through a CAN bus, and the measurement and control computer 4 is connected to all the three-axis pressure sensors 25 through a data acquisition card.
A method for testing the push-pull force of an electric cylinder based on a component force support comprises the following steps,
the method comprises the following steps: connecting the component force testing device 2 with the undercarriage 1, and connecting all three-axis pressure sensors 25 of the component force testing device 2 with the undercarriage 1;
step two: mounting the tested electric cylinder 3 on the undercarriage 1, and connecting a push rod lug 32 of the electric cylinder 3 with the shaft 21 of the component force testing device 2;
step three: connecting a CAN interface card of the measurement and control computer 4 and a CAN interface of a driver of the electric cylinder 3 to the same CAN bus;
step IV: connecting a data acquisition card of the measurement and control computer 4 with all the three-axis pressure sensors 25 of the separation testing device 2 through data cables;
step five: starting a main power supply, starting the whole system for self-checking, starting a measurement and control computer 4 and starting a data acquisition card to acquire data of the three-axis pressure sensor 25;
step (c): the control computer 4 sends an instruction to a driver of the electric cylinder 3 to control the extension of a push rod of the electric cylinder 3, the control computer 4 displays the push-pull force of the electric cylinder 3 and the push-pull force F of the electric cylinder 3 in real timeCombination of Chinese herbsCalculated from data from all three-axis pressure sensors, the formula is as follows:
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (5)
1. The utility model provides an electronic jar push-pull force test system based on component support which characterized in that: the electric force testing device is used for measuring the push-pull force of the electric cylinder, a driver of the electric cylinder and the component force testing device are connected with a measurement and control computer;
the component force testing device comprises a measuring assembly connected with the undercarriage and a component force assembly connected with the measuring assembly, and the component force assembly is connected with a push rod earring of the electric cylinder;
the component force assembly comprises a shaft connected with a push rod earring of the electric cylinder, two component force blocks are arranged on the shaft, four supports are arranged on each component force block, each support is connected with a triaxial pressure sensor, and the triaxial pressure sensors are simultaneously connected with the undercarriage;
the two component force blocks are respectively fixed at two ends of the shaft, and one end of the shaft penetrates into the triangular side surface at one side of the component force block and is fixed with the component force block;
the four supports form a pair of pairs, and the supports of each pair are respectively arranged on two sides of the force component block;
the two supports of each pair are connected through a shaft pin penetrating through the component force block, two ends of the shaft pin penetrate out of two triangular side faces of the component force block, and one support is fixed at each end of the shaft pin.
2. The component force bearing-based electric cylinder push-pull force test system as claimed in claim 1, wherein the other end of the landing gear is hinged to the first base, and the bottom of the electric cylinder body is hinged to the second base.
3. The component force bearing-based electric cylinder push-pull force test system as claimed in claim 1, wherein the driver of the electric cylinder is connected to the test control computer through a CAN bus.
4. The component force support-based electric cylinder push-pull force test system as claimed in claim 1, wherein said measurement and control computer is connected to all said three-axis pressure sensors through a data acquisition card.
5. A test method applied to the component force support-based electric cylinder push-pull force test system according to claim 1, wherein the test method comprises the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps: connecting the component force testing device with the undercarriage, and connecting all three-axis pressure sensors of the component force testing device with the undercarriage;
step two: mounting the tested electric cylinder on the undercarriage, and connecting a push rod earring of the electric cylinder with a shaft of the component force testing device;
step three: connecting a CAN card of a measurement and control computer and a CAN interface of a driver of an electric cylinder to the same CAN bus;
step IV: connecting a data acquisition card of a measurement and control computer with all three-axis pressure sensors of a separation testing device through data cables;
step five: starting a main power supply, starting the whole system for self-checking, starting a measurement and control computer and starting a data acquisition card to acquire data of the three-axis pressure sensor;
step (c): the control method comprises the steps of sending an instruction to a driver of the electric cylinder through the measurement and control computer, controlling the extension and contraction of a push rod of the electric cylinder, displaying the push-pull force of the electric cylinder in real time through the measurement and control computer, and displaying the push-pull force F of the electric cylinderCombination of Chinese herbsCalculated from data from all three-axis pressure sensors, the formula is as follows:
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| CN201810843205.4A CN109029813B (en) | 2018-07-27 | 2018-07-27 | Electric cylinder push-pull force testing system and method based on component force support |
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| CN201810843205.4A CN109029813B (en) | 2018-07-27 | 2018-07-27 | Electric cylinder push-pull force testing system and method based on component force support |
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| CN109029813B true CN109029813B (en) | 2020-11-24 |
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| US10078026B2 (en) * | 2015-12-31 | 2018-09-18 | Michael Vinogradov-Nurenberg | Multi-component force-torque sensing device with reduced cross-talk for twist-compression testing machine |
| CN106372355B (en) * | 2016-09-14 | 2019-09-06 | 北京航空航天大学 | General perpendicular load simulating device |
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| EP0927901A1 (en) * | 1997-12-29 | 1999-07-07 | Perkin-Elmer Limited | Adjustable mounting of optical components |
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