CN110879141A - Damping coefficient test method of variable damper - Google Patents
Damping coefficient test method of variable damper Download PDFInfo
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- CN110879141A CN110879141A CN201911245708.2A CN201911245708A CN110879141A CN 110879141 A CN110879141 A CN 110879141A CN 201911245708 A CN201911245708 A CN 201911245708A CN 110879141 A CN110879141 A CN 110879141A
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- damper
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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
- G01M13/00—Testing of machine parts
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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Abstract
The invention belongs to the technical field of damper tests, and particularly discloses a damping coefficient test method of a variable damper, which comprises the following steps of firstly selecting the type of the damper to be tested, adjusting the damping coefficient of the variable damper, determining the damping coefficient adjusting range and the stroke of the damper, and equally dividing the damping coefficient of the variable damper into 3-5 types; aiming at the characteristics of the variable damper, the dampers are divided into a plurality of groups according to the damping coefficient adjusting range and the stroke of the dampers, then the plurality of groups of dampers are simultaneously tested through the testing device capable of simultaneously measuring the elastic coefficients of the plurality of groups of dampers, the variable control method is adopted, the dampers under different conditions are all tested, the test base number is more, more test results can be obtained, and therefore the accuracy of the test results is ensured.
Description
Technical Field
The invention belongs to the technical field of damper tests, and particularly relates to a damping coefficient test method of a variable damper.
Background
A damper or shock absorber is a device that uses damping characteristics to damp mechanical vibrations and dissipate kinetic energy. The damping spring shock absorber has the advantages of low frequency and large damping of the steel spring shock absorber, eliminates the inherent resonance amplitude phenomenon of the steel spring, adopts the optimal spring steel, has the shock absorber effect of more than 95 percent, has the service life of more than 10 years, has the advantages of low frequency and large damping of the steel spring shock absorber, eliminates the inherent resonance amplitude phenomenon of the steel spring, has wide load range of the damping spring shock absorber, is convenient for users to select, has low inherent frequency, good vibration isolation effect, compact structure, small appearance size, convenient installation and replacement, safe and reliable use, long service life and strong adaptability to working environment.
The calculation formula of the spring damper is that F is K (L-L0), L0 is the original length of the spring, L is the length when the tensile force F is applied, the tensile force F and the spring length L at the moment are measured, then the length L0 when the natural length of the spring is measured, the stiffness coefficient K, namely the damping coefficient, can be calculated by substituting the above formula, the testing method of the damping coefficient of the spring damper is characterized in that whether the spring is qualified or not is judged by measuring the corresponding force value F through the deformation △ H of the spring or the pressure to the height H, or whether the spring is qualified or not is judged by measuring the corresponding spring deformation △ H or the height H through the force value F of the spring, one-point or multi-point testing can be carried out to judge whether the spring is qualified or not, sectional measurement can be carried out, the rigidity (elastic coefficient) K and the average rigidity of each section can be calculated, the testing process of the damping spring is usually tested by using a spring retainer ring elastic coefficient testing machine at present, but only one damping spring can be tested once, but the accuracy of the number of the testing samples is determined, therefore, a plurality of times of spring replacement are needed, and the testing process.
Disclosure of Invention
The invention aims to provide a damping coefficient test method of a variable damper, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme: a damping coefficient test method of a variable damper comprises the following steps:
step S1, determining the adjustable range of the variable damper: firstly, selecting the model of a damper to be tested, adjusting the damping coefficient of the variable damper, and determining the damping coefficient adjusting range and the stroke of the damper;
step S2, grouping dampers: according to the adjusting range of the damping coefficient, the damping coefficient of the variable damper is equally divided into 3 to 5 types, and 6 to 12 dampers with each elastic coefficient are arranged into a group;
step S3, adjustment of the test apparatus: equally dividing the extrusion/stretching length of a test device into 3-5 types according to the stroke of the damper, wherein more than 2 test devices are arranged in each stroke, and each group of dampers is correspondingly provided with one group of test devices;
step S4, selection of test apparatus drive mode: selecting a constant speed mode and a variable acceleration mode for driving extrusion/stretching of the test device;
step S5, damper installation: installing a group of dampers with the same elastic coefficient on a corresponding group of test devices, arranging the strokes of the dampers with the same elastic coefficient in an ascending power or descending power sequence, and respectively installing the dampers with the same elastic coefficient and the same strokes on two test devices with the same extrusion/stretching length;
step S6, the damper coefficient is obtained: the damper is extruded/stretched by the testing device, and then the coefficient of the damper with different elastic coefficients and different strokes is obtained under different extrusion/stretching lengths and modes to calculate the average value.
Preferably, the test device in the step S3 includes a joint for fixing the damper, a driving device for compressing/stretching the damper, a tension/pressure sensor, and a display for calculating a value.
Preferably, the joint fixes the damper in a screwing, clamping or binding mode.
Preferably, the driving direction of the driving device moves along the telescopic direction of the damper, and the driving device is a screw rod sliding table mechanism, a hydraulic telescopic rod or a cylinder telescopic rod.
Preferably, in the step S6, the number of times the test device presses/stretches the damper is 10 to 20.
The invention has the technical effects and advantages that: compared with the prior art, the variable damper testing method has the advantages that the dampers are divided into multiple groups according to the damping coefficient adjusting range and the stroke of the dampers aiming at the characteristics of the variable dampers, then the multiple groups of dampers are simultaneously tested through the testing device capable of simultaneously measuring the elastic coefficients of the multiple groups of dampers, the variable control method is adopted, the dampers under different conditions are all involved in the test, the test base number is more, more test results can be obtained, the accuracy of the test results is ensured, the testing method can be used for simultaneously testing the multiple groups and multiple types of dampers, and the testing efficiency is improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a damping coefficient test method of a variable damper, which comprises the following steps:
step S1, determining the adjustable range of the variable damper: firstly, selecting the model of a damper to be tested, adjusting the damping coefficient of the variable damper, and determining the damping coefficient adjusting range and the stroke of the damper;
step S2, grouping dampers: according to the adjusting range of the damping coefficient, the damping coefficient of the variable damper is equally divided into 3 types, and 6 dampers with each elastic coefficient are arranged into a group;
step S3, adjustment of the test apparatus: equally dividing the extrusion/stretching length of the test device into 3 types according to the stroke of the damper, wherein 2 test devices are arranged in each stroke, and a group of test devices are correspondingly arranged in each group of dampers;
step S4, selection of test apparatus drive mode: selecting a constant speed mode and a variable acceleration mode for driving extrusion/stretching of a test device;
step S5, damper installation: installing a group of dampers with the same elastic coefficient on a corresponding group of test devices, arranging the strokes of the dampers with the same elastic coefficient in an ascending order, and respectively installing the dampers with the same elastic coefficient and the same strokes on two test devices with the same extrusion/stretching length;
step S6, the damper coefficient is obtained: the damper is extruded/stretched by a test device, and then the coefficient of the damper with different elastic coefficients and different strokes is obtained under different extrusion/stretching lengths and modes to calculate the average value.
Specifically, the test device in step S3 includes a joint for fixing the damper, a driving device for compressing/stretching the damper, a tension/pressure sensor, and a display for calculating a numerical value.
Specifically, the joint fixes the damper in a screwing, clamping or binding mode.
Specifically, the driving direction of the driving device moves along the telescopic direction of the damper, and the driving device is a screw rod sliding table mechanism, a hydraulic telescopic rod or a cylinder telescopic rod.
Specifically, in step S6, the number of times the apparatus is pressed/stretched is 10.
In the embodiment, aiming at the characteristics of the variable damper, the dampers are divided into 3 groups according to the damping coefficient adjusting range and the stroke of the dampers, then the measurement test is simultaneously carried out on the dampers through the test device capable of simultaneously measuring the elastic coefficients of the dampers, the controlled variable method is adopted, the dampers under different conditions are all involved in the test, the test base number is more, more test results can be obtained, and the accuracy of the test results is ensured.
Example 2
The invention provides a damping coefficient test method of a variable damper, which comprises the following steps:
step S1, determining the adjustable range of the variable damper: firstly, selecting the model of a damper to be tested, adjusting the damping coefficient of the variable damper, and determining the damping coefficient adjusting range and the stroke of the damper;
step S2, grouping dampers: according to the adjusting range of the damping coefficient, the damping coefficient of the variable damper is equally divided into 4 types, and 10 dampers with each elastic coefficient are arranged into a group;
step S3, adjustment of the test apparatus: equally dividing the extrusion/stretching length of the test device into 4 types according to the stroke of the damper, wherein 4 test devices are arranged in each stroke, and a group of test devices are correspondingly arranged in each group of dampers;
step S4, selection of test apparatus drive mode: selecting a constant speed mode and a variable acceleration mode for driving extrusion/stretching of a test device;
step S5, damper installation: installing a group of dampers with the same elastic coefficient on a corresponding group of test devices, arranging the strokes of the dampers with the same elastic coefficient in an ascending order, and respectively installing the dampers with the same elastic coefficient and the same strokes on two test devices with the same extrusion/stretching length;
step S6, the damper coefficient is obtained: the damper is extruded/stretched by a test device, and then the coefficient of the damper with different elastic coefficients and different strokes is obtained under different extrusion/stretching lengths and modes to calculate the average value.
Specifically, the test device in step S3 includes a joint for fixing the damper, a driving device for compressing/stretching the damper, a tension/pressure sensor, and a display for calculating a numerical value.
Specifically, the joint fixes the damper in a screwing, clamping or binding mode.
Specifically, the driving direction of the driving device moves along the telescopic direction of the damper, and the driving device is a screw rod sliding table mechanism, a hydraulic telescopic rod or a cylinder telescopic rod.
Specifically, in step S6, the number of times the apparatus is pressed/stretched is 15.
In the embodiment, aiming at the characteristics of the variable damper, the dampers are divided into 4 groups according to the damping coefficient adjusting range and the stroke of the dampers, then the measurement test is simultaneously carried out on the dampers through the test device capable of simultaneously measuring the elastic coefficients of the dampers, the controlled variable method is adopted, the dampers under different conditions are all involved in the test, the test base number is more, more test results can be obtained, and therefore the accuracy of the test results is ensured.
Example 3
The invention provides a damping coefficient test method of a variable damper, which comprises the following steps:
step S1, determining the adjustable range of the variable damper: firstly, selecting the model of a damper to be tested, adjusting the damping coefficient of the variable damper, and determining the damping coefficient adjusting range and the stroke of the damper;
step S2, grouping dampers: according to the adjusting range of the damping coefficient, the damping coefficient of the variable damper is equally divided into 5 types, and 12 dampers with each elastic coefficient are arranged into a group;
step S3, adjustment of the test apparatus: equally dividing the extrusion/stretching length of the test device into 5 types according to the stroke of the damper, wherein 6 test devices are arranged in each stroke, and a group of test devices are correspondingly arranged in each group of dampers;
step S4, selection of test apparatus drive mode: selecting a constant speed mode and a variable acceleration mode for driving extrusion/stretching of a test device;
step S5, damper installation: installing a group of dampers with the same elastic coefficient on a corresponding group of test devices, arranging the strokes of the dampers with the same elastic coefficient in an ascending order, and respectively installing the dampers with the same elastic coefficient and the same strokes on two test devices with the same extrusion/stretching length;
step S6, the damper coefficient is obtained: the damper is extruded/stretched by a test device, and then the coefficient of the damper with different elastic coefficients and different strokes is obtained under different extrusion/stretching lengths and modes to calculate the average value.
Specifically, the test device in step S3 includes a joint for fixing the damper, a driving device for compressing/stretching the damper, a tension/pressure sensor, and a display for calculating a numerical value.
Specifically, the joint fixes the damper in a screwing, clamping or binding mode.
Specifically, the driving direction of the driving device moves along the telescopic direction of the damper, and the driving device is a screw rod sliding table mechanism, a hydraulic telescopic rod or a cylinder telescopic rod.
Specifically, in step S6, the number of times the apparatus is pressed/stretched is 20.
In the embodiment, aiming at the characteristics of the variable damper, the dampers are divided into 5 groups according to the damping coefficient adjusting range and the stroke of the dampers, then the measurement test is simultaneously carried out on the dampers through the test device capable of simultaneously measuring the elastic coefficients of the dampers, the controlled variable method is adopted, the dampers under different conditions are all involved in the test, the test base number is more, more test results can be obtained, and the accuracy of the test results is ensured.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A damping coefficient test method of a variable damper is characterized by comprising the following steps:
step S1, determining the adjustable range of the variable damper: firstly, selecting the model of a damper to be tested, adjusting the damping coefficient of the variable damper, and determining the damping coefficient adjusting range and the stroke of the damper;
step S2, grouping dampers: according to the adjusting range of the damping coefficient, the damping coefficient of the variable damper is equally divided into 3 to 5 types, and 6 to 12 dampers with each elastic coefficient are arranged into a group;
step S3, adjustment of the test apparatus: equally dividing the extrusion/stretching length of a test device into 3-5 types according to the stroke of the damper, wherein more than 2 test devices are arranged in each stroke, and each group of dampers is correspondingly provided with one group of test devices;
step S4, selection of test apparatus drive mode: selecting a constant speed mode and a variable acceleration mode for driving extrusion/stretching of the test device;
step S5, damper installation: installing a group of dampers with the same elastic coefficient on a corresponding group of test devices, arranging the strokes of the dampers with the same elastic coefficient in an ascending power or descending power sequence, and respectively installing the dampers with the same elastic coefficient and the same strokes on two test devices with the same extrusion/stretching length;
step S6, the damper coefficient is obtained: the damper is extruded/stretched by the testing device, and then the coefficient of the damper with different elastic coefficients and different strokes is obtained under different extrusion/stretching lengths and modes to calculate the average value.
2. The damping coefficient test method of a variable damper according to claim 1, characterized in that: the test device in the step S3 includes a joint for fixing the damper, a driving device for compressing/stretching the damper, a tension/pressure sensor, and a display for calculating a value.
3. The damping coefficient test method of a variable damper according to claim 2, characterized in that: the joint fixes the damper in a screwing, clamping or binding mode.
4. The damping coefficient test method of a variable damper according to claim 2, characterized in that: the driving direction of the driving device moves along the telescopic direction of the damper, and the driving device is a screw rod sliding table mechanism, a hydraulic telescopic rod or a cylinder telescopic rod.
5. The damping coefficient test method of a variable damper according to claim 1, characterized in that: in the step S6, the number of times the test apparatus squeezes/stretches the damper is 10 to 20 times.
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Effective date of registration: 20220629 Address after: 528000 205-2, second floor, Huaya Plaza, No. 38, Shuitou section, Guihe Road, Dali Town, Nanhai District, Foshan City, Guangdong Province Patentee after: FOSHAN GUANGKE INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: Room 217-1, 218, 2nd floor, Huaya Plaza, No.38, Shuitou section, Guihe Road, Dali Town, Nanhai District, Foshan City, Guangdong Province Patentee before: Foshan DingKe Technology Development Co.,Ltd. |
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