CN114166533B - Composite auxiliary spring simulated loading bench test device and test method - Google Patents
Composite auxiliary spring simulated loading bench test device and test method Download PDFInfo
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- CN114166533B CN114166533B CN202111230315.1A CN202111230315A CN114166533B CN 114166533 B CN114166533 B CN 114166533B CN 202111230315 A CN202111230315 A CN 202111230315A CN 114166533 B CN114166533 B CN 114166533B
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- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 230000009021 linear effect Effects 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 230000002238 attenuated effect Effects 0.000 claims description 4
- 238000012417 linear regression Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009661 fatigue test Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 230000001174 ascending effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Classifications
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention provides a test device and a test method for a composite auxiliary spring simulated loading bench, which are used for simulating the actual running road condition of an automobile by controlling the load output of a hydraulic linear actuating mechanism and detecting the rigidity performance and fatigue performance of a composite auxiliary spring.
Description
Technical Field
The invention relates to the technical field of auxiliary spring test devices, in particular to a composite auxiliary spring simulated loading bench test device and a test method
Background
Leaf springs are one of the important parts that make up automotive suspension systems, and the traditional leaf springs, known collectively as leaf springs, are made of steel materials and are spring elements in different forms on different vehicles. The glass fiber reinforced material is used for replacing the metal material, the mass of the manufactured part body is far lower than that of the metal leaf spring, the integral structural design of the suspension can be optimized, the safety is enhanced, and the weight is reduced.
The main-auxiliary composite material leaf spring is based on the original main-auxiliary leaf spring steel plate spring structure, the original auxiliary leaf spring is replaced by the composite material leaf spring, the main spring is a traditional leaf spring, and the auxiliary spring is a hybrid structure of composite materials. The material has the advantages of fully playing the property of the material and realizing the light structure.
At present, a composite auxiliary spring bench test is carried out separately from a main spring, and a general bench is carried out by adopting a fixture clamp which is universal with a steel plate spring, so that the failure mode and the fatigue life of the bench are greatly different from those of a real roadway. In addition, the auxiliary spring made of the composite material does not break instantaneously like a steel plate spring, and is mainly judged by observing the layering condition of fibers, so that certain subjectivity exists.
Disclosure of Invention
The invention provides a composite auxiliary spring simulated loading bench test device which is used for simulating actual running road conditions of an automobile and detecting the rigidity performance and fatigue performance of a composite auxiliary spring by controlling the load output of a hydraulic linear actuating mechanism.
The technical scheme adopted by the invention comprises a linear actuating mechanism, a connecting mechanism, a U-shaped bolt, a gasket type load sensor and a supporting seat, wherein the lower end of the linear actuating mechanism is an actuating end, vertical downward pressure and upward tension can be provided, the connecting mechanism is connected with the actuating end of the linear actuating mechanism, the two ends of the U-shaped bolt are respectively connected with the connecting mechanism, the two ends of the U-shaped bolt are respectively sleeved with one group of gasket type load sensor, and the supporting seat is provided with two groups and is respectively arranged at two sides of the area below the U-shaped bolt and used for supporting the two ends of the auxiliary spring made of the composite material.
Further, the linear actuating mechanism is a hydraulic actuator, the connecting mechanism comprises an upper connecting plate, a lower connecting plate, double-ended screws, nuts and cushion blocks, the upper connecting plate is fixedly connected with the action end of the hydraulic actuator, the lower connecting plate is connected with U-shaped bolts, the upper connecting plate and the lower connecting plate are arranged in parallel, the upper connecting plate is connected with the lower connecting plate through a plurality of double-ended screws, the two ends of the double-ended screws are respectively locked through the nuts, and the cushion blocks with central through holes are sleeved on the double-ended screw sections between the upper connecting plate and the lower connecting plate.
Further, four bolt mounting holes are formed in the lower connecting plate and distributed in a matrix, the upper ends of the two U-shaped bolts respectively penetrate through the four bolt mounting holes from bottom to top, two gasket type load sensors are respectively sleeved at the two ends of the U-shaped bolts and are arranged on the upper surface of the lower connecting plate, nuts are sleeved at the upper ends of the U-shaped bolts, and the gasket type load sensors are locked through the nuts at the upper part.
Further, two U-shaped bolts are arranged in parallel, the axial directions of the end parts of the two U-shaped bolts are parallel to each other, four bolt mounting holes formed in the lower connecting plate are long holes, and the length direction of the long holes is along the arrangement direction of the U-shaped bolts.
Further, be equipped with loading upper cover plate and loading lower cover plate on the U-shaped bolt, loading upper cover plate locates lower connecting plate below, is equipped with four through-holes on the loading upper cover plate, with four bolt mounting holes one-to-one on the lower connecting plate of its top, loading upper cover plate is established on two U-shaped bolts through four through-hole cover, loading lower cover plate locates in the U-shaped bolt, and the arc bending portion inboard in U-shaped bolt bottom is set up respectively at both ends, loading lower cover plate's upper surface is the plane, and the lower surface is the face of cylinder, can agree with the arc bending portion medial surface of U-shaped bolt bottom, the central flat section of combined material auxiliary spring is located between loading upper cover plate and the loading lower cover plate.
The supporting seat comprises a bottom plate, two vertical plates and a pin shaft, wherein the two vertical plates are vertically fixed on the bottom plate and are parallel to each other, grooves are formed in the tops of the two bottom plates, the cross section of each groove is of a semicircular structure, two ends of each pin shaft are respectively erected in the grooves in the tops of the two vertical plates, two groups of supporting seats are respectively arranged under two ends of the auxiliary springs made of composite materials, the two pin shafts are parallel and located on the same horizontal plane, and the axial direction of each pin shaft is perpendicular to the arrangement direction of the two U-shaped bolts.
The invention also provides a test method for the auxiliary spring simulation loading bench of the composite material, which comprises the following steps:
(1) The U-shaped bolts are adopted to simulate loading of the auxiliary springs made of the composite materials, and two ends of each auxiliary spring made of the composite materials are respectively lapped on a pin shaft capable of freely rotating;
(2) Fixedly connecting the upper end of the U-shaped bolt with the action end of the linear action mechanism through a connecting mechanism;
(3) The actuating end of the linear actuating mechanism downwards loads the auxiliary spring of the composite material until the auxiliary spring is loaded to the maximum test load, and then the auxiliary spring of the composite material is unloaded to the initial load;
(4) The data acquired in the process are led out from the data acquisition device, and the static stiffness value of the leaf spring is obtained;
(5) Calculating the pre-adding change of the auxiliary springForm value S and sum amplitude S a ：
Maximum stress sigma of auxiliary spring according to given specification m Stress amplitude sigma a Bench test is carried out by
Specific stress
Amplitude of vibration
The effective length of the L-auxiliary spring, the rigidity of the C-auxiliary spring, the number of n-auxiliary spring pieces, the width of the b-auxiliary spring and the thickness of the h-auxiliary spring;
pre-deformation value
Starting a linear actuating mechanism to work according to the amplitude value and the pre-added deformation value, and driving the auxiliary spring to perform a fatigue test;
(6) And (3) stopping the auxiliary spring for 1 ten thousand times every vibration (a sine wave is formed by vibration of any point on the auxiliary spring), detecting the real-time stiffness value of the auxiliary spring according to the modes of the steps (1) - (4), and judging that the composite auxiliary spring has failed when the real-time stiffness value is attenuated by more than 10% compared with the static stiffness value in the step (4), wherein the corresponding vibration times of the auxiliary spring are the fatigue life times of the auxiliary spring.
Further, in the step (4), a rectangular coordinate system is established, the X axis is the displacement value of the auxiliary spring, the Y axis is the load value of the auxiliary spring, and the collected loading process data and unloading process data are subjected to linear regression processing to obtain a linear straight line, wherein the slope of the linear straight line is the static stiffness value of the plate spring.
Further, in the step (1), a washer type load sensor is sleeved below the nut of the U-shaped bolt and used for monitoring the torque attenuation condition of the U-shaped bolt in real time, and when the torque attenuation is 10%, the U-shaped bolt is restarted after the torque is required to be stopped and re-tightened.
The invention has the beneficial effects that:
1. through set up the slot hole that is used for installing U-shaped bolt on lower connecting plate for whole equipment can be applicable to the experiment of different sizes leaf spring.
2. The gasket type load sensor is arranged between the U-shaped bolt and the nut, so that the torque change of the U-shaped bolt can be monitored in real time, the consistency of the torque of 4 bolts is ensured during clamping, and the early damage of the auxiliary spring of the composite material caused by overlarge or unbalanced torque is prevented; during bench test, the nut can be tightened in time when the torque is attenuated, so that the precision of a test result is ensured.
3. In the technical scheme, the loading cover plate and the U-shaped bolt are adopted to carry out bench test, so that the actual running road condition of the automobile is simulated, the failure mode of the plate spring is close to the actual running state, and the accuracy of the test result is ensured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 and 3 are schematic structural views of the assembly of the connecting mechanism, the U-bolt and the auxiliary spring in the present invention.
Fig. 4 is a schematic structural view of a lower connecting plate in the present invention.
FIG. 5 is a linear regression graph of step (4) of the test method of the present invention, wherein the stiffness values of the k composite auxiliary spring.
Detailed Description
The following describes an embodiment of the composite auxiliary spring simulated loading bench test device in detail with reference to the accompanying drawings.
As shown in fig. 1, the structure of this embodiment includes a linear actuating mechanism, a connecting mechanism, a U-shaped bolt 3, a pad type load sensor 205 and a supporting seat 4, wherein the lower end of the linear actuating mechanism is an actuating end, and can provide a vertical downward pressure and an upward tension, the connecting mechanism is connected with the actuating end of the linear actuating mechanism, two ends of the U-shaped bolt 3 are respectively connected with the connecting mechanism, two ends of the U-shaped bolt 3 are respectively sleeved with a group of pad type load sensors 205, and the supporting seat 4 is provided with two groups of pad type load sensors respectively and is respectively arranged at two sides of the area below the U-shaped bolt 3 for supporting two ends of the auxiliary spring 6 made of composite materials.
In this embodiment, the linear actuating mechanism is a hydraulic actuator 1, the connecting mechanism includes an upper connecting plate 204, a lower connecting plate 203, a double-headed screw 201, a nut and a cushion block 202, the upper connecting plate 204 is fixedly connected with the actuating end of the hydraulic actuator 1, the lower connecting plate 203 is connected with a U-shaped bolt 3, the upper connecting plate 203 and the lower connecting plate 203 are arranged in parallel, the upper connecting plate 204 is connected with the lower connecting plate 203 through a plurality of double-headed screws 201, two ends of the double-headed screws 201 are respectively locked through the nuts, and the cushion block 202 with a central through hole is sleeved on the section of the double-headed screw 201 between the upper connecting plate 204 and the lower connecting plate 203.
In this embodiment, four bolt mounting holes 206 are formed in the lower connecting plate 203 and distributed in a matrix, the upper ends of two U-shaped bolts 3 respectively pass through the four bolt mounting holes 206 from bottom to top, two washer-type load sensors 205 are respectively sleeved at two ends of each U-shaped bolt 3 and are arranged on the upper surface of the lower connecting plate 203, nuts are sleeved at the upper ends of the U-shaped bolts 3, and the washer-type load sensors 205 are locked through the nuts above.
In this embodiment, two U-bolts 3 are disposed in parallel, and the axial directions of the end portions of the two U-bolts 3 are parallel to each other, and four bolt mounting holes 206 formed in the lower connecting plate 203 are long holes, and the length direction of the long holes is along the arrangement direction of the U-bolts 3.
In this embodiment, a loading upper cover plate 7 and a loading lower cover plate 8 (in this embodiment, the stiffness of the auxiliary spring can be simulated when the loading upper cover plate and the loading lower cover plate are arranged in the actual loading process) are arranged on the U-shaped bolt 3, the loading upper cover plate 7 is arranged below the lower connecting plate 203, four through holes are arranged on the loading upper cover plate 7 and correspond to the four bolt mounting holes 206 on the lower connecting plate 203 above the four through holes one by one, the loading upper cover plate 7 is sleeved on the two U-shaped bolts 3 through the four through holes, the loading lower cover plate 8 is arranged in the U-shaped bolt 3, two ends of the loading lower cover plate 8 are respectively arranged on the inner sides of the circular arc-shaped bending parts at the bottom of the U-shaped bolt 3, the upper surface of the loading lower cover plate 8 is a plane, the lower surface is a cylindrical surface, the lower surface can be matched with the inner side faces of the circular arc-shaped bending parts at the bottom of the U-shaped bolt 3, and the central straight section of the composite auxiliary spring 6 is arranged between the loading upper cover plate 7 and the loading lower cover plate 8.
In this embodiment, the supporting seat 4 includes a bottom plate 402, two vertical plates 401 and a pin 5, the two vertical plates 401 are vertically fixed on the bottom plate 402 and are parallel to each other, the tops of the two bottom plates are provided with grooves, the cross sections of the grooves are in semicircular structures, two ends of the pin are respectively erected in the grooves at the tops of the two vertical plates, two groups of supporting seats 4 are respectively arranged under two ends of the auxiliary spring 6 made of composite material, the two pins are parallel and located on the same horizontal plane, and the axial direction of the pin is perpendicular to the arrangement direction of the two U-shaped bolts 3.
Embodiments of the test method according to the present invention will be described in detail below by describing the working principle of the above-described structure.
The structure mainly outputs load to the auxiliary spring of the composite material through the linear actuating mechanism (in the embodiment, the hydraulic actuator is adopted as the linear actuating mechanism) so as to simulate the load born by the automobile under the actual driving road condition.
In the concrete implementation process, the composite auxiliary springs are assembled and clamped by utilizing structures such as U-shaped bolts, loading upper cover plates and loading lower cover plates, and the like, loading is simulated, and two ends of the composite auxiliary springs are respectively lapped on a pin shaft capable of freely rotating. The U-shaped bolt is fixedly connected with the action end of the linear actuating mechanism through the connecting mechanism, and the linear actuating mechanism outputs load to the auxiliary spring through the U-shaped bolt.
The process is the installation process of the device and the auxiliary spring, and the test process is as follows:
the composite auxiliary spring is loaded to the maximum set test load through the linear actuating mechanism, and then the load is unloaded to the initial value. The data acquired in the experiment are led out from the data acquisition device, a rectangular coordinate system is established, and the data are processed: the X axis is the displacement value of the auxiliary spring, the Y axis is the load value of the auxiliary spring, and the collected loading process data and unloading process data are subjected to linear regression processing to obtain a linear straight line, wherein the slope of the linear straight line is the static stiffness value of the auxiliary spring.
After the static stiffness value of the auxiliary spring is obtained, the pre-deformation value and the auxiliary spring amplitude value of the auxiliary spring can be calculated, and the calculation method comprises the following steps:
maximum stress sigma of auxiliary spring according to given specification m Stress amplitude sigma a Bench test is performed, then:
specific stress
Amplitude of vibration
The effective length of the L-auxiliary spring, the rigidity of the C-auxiliary spring, the number of n-auxiliary spring pieces, the width of the b-auxiliary spring and the thickness of the h-auxiliary spring;
pre-deformation value
Starting a linear actuating mechanism to work according to the amplitude value and the pre-added deformation value, and driving the auxiliary spring to perform a fatigue test; and (3) stopping the auxiliary spring for 1 ten thousand times every vibration (the vibration of any point on the auxiliary spring forms a sine wave as one time), and judging that the composite auxiliary spring is invalid when the real-time stiffness value is attenuated by more than 10% compared with the static stiffness value in the step (4), wherein the corresponding vibration times of the auxiliary spring are the fatigue life times of the auxiliary spring.
In the process, a washer type load sensor is sleeved below the nut of the U-shaped bolt and is mainly used for monitoring the torque attenuation condition of the U-shaped bolt in real time. When the torque attenuation reaches 10%, stopping treatment is needed, and restarting is performed after the nuts of the U-shaped bolts are tightened. The process can effectively ensure the accuracy of test data.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a combined material auxiliary spring simulation loading bench test method, adopts combined material auxiliary spring simulation loading bench test device to go on, and the device includes straight line actuating mechanism, coupling mechanism, U-shaped bolt, gasket formula load sensor and supporting seat, straight line actuating mechanism lower extreme is the action end, can provide vertical decurrent pressure and ascending pulling force, coupling mechanism is connected with the action end of straight line actuating mechanism, U-shaped bolt both ends are connected with coupling mechanism respectively, and the cover is established a set of gasket formula load sensor respectively at U-shaped bolt both ends, the supporting seat has two sets of, locates the both sides in U-shaped bolt below region respectively for support combined material auxiliary spring both ends, the supporting seat includes a bottom plate, two risers and a round pin axle, be equipped with loading upper cover plate and loading lower cover plate on the U-shaped bolt, the central flat straight section of combined material auxiliary spring is located between loading upper cover plate and the loading lower cover plate, its characterized in that includes following steps:
(1) The U-shaped bolts are adopted to simulate loading of the auxiliary springs made of the composite materials, and two ends of each auxiliary spring made of the composite materials are respectively lapped on a pin shaft capable of freely rotating;
(2) Fixedly connecting the upper end of the U-shaped bolt with the action end of the linear action mechanism through a connecting mechanism;
(3) The actuating end of the linear actuating mechanism downwards loads the auxiliary spring of the composite material until the auxiliary spring is loaded to the maximum test load, and then the auxiliary spring of the composite material is unloaded to the initial load;
(4) The data acquired in the process are led out from the data acquisition device, and the static stiffness value of the auxiliary spring is obtained;
(5) Calculating the pre-added deformation value S and the sum amplitude S of the auxiliary spring a ：
Maximum stress sigma of auxiliary spring according to given specification m Stress amplitude sigma a Bench test is performed with specific stress
Amplitude of vibration
The effective length of the L-auxiliary spring, the rigidity of the C-auxiliary spring, the number of n-auxiliary spring pieces, the width of the b-auxiliary spring and the thickness of the h-auxiliary spring; pre-deformation value
Starting a linear actuating mechanism to work according to the amplitude value and the pre-added deformation value, and driving the auxiliary spring to perform a fatigue test;
and (3) stopping the auxiliary spring for 1 ten thousand times when vibrating, detecting the real-time stiffness value of the auxiliary spring according to the modes of the steps (1) - (4), and judging that the composite auxiliary spring is invalid when the real-time stiffness value is attenuated by more than 10% compared with the static stiffness value in the step (4), wherein the corresponding vibration frequency of the auxiliary spring is the fatigue life frequency of the auxiliary spring.
2. The composite auxiliary spring simulated loading bench test method according to claim 1, wherein the method comprises the following steps: the linear actuating mechanism is a hydraulic actuator, the connecting mechanism comprises an upper connecting plate, a lower connecting plate, double-headed screws, nuts and cushion blocks, the upper connecting plate is fixedly connected with the action end of the hydraulic actuator, the lower connecting plate is connected with U-shaped bolts, the upper connecting plate and the lower connecting plate are arranged in parallel, the upper connecting plate is connected with the lower connecting plate through a plurality of double-headed screws, the two ends of the double-headed screws are respectively locked through the nuts, and the cushion blocks with central through holes are sleeved on the double-headed screw sections between the upper connecting plate and the lower connecting plate;
four bolt mounting holes are formed in the lower connecting plate and distributed in a matrix, the upper ends of two U-shaped bolts respectively penetrate through the four bolt mounting holes from bottom to top, two gasket type load sensors are respectively sleeved at the two ends of each U-shaped bolt and are arranged on the upper surface of the lower connecting plate, nuts are sleeved at the upper ends of the U-shaped bolts, and the gasket type load sensors are locked through the nuts at the upper part; the two U-shaped bolts are arranged in parallel, the axial directions of the end parts of the two U-shaped bolts are parallel to each other, four bolt mounting holes formed in the lower connecting plate are long holes, and the length direction of the long holes is along the arrangement direction of the U-shaped bolts;
the loading upper cover plate is arranged below the lower connecting plate, four through holes are formed in the loading upper cover plate and correspond to four bolt mounting holes in the lower connecting plate above the loading upper cover plate one by one, the loading upper cover plate is sleeved on two U-shaped bolts through the four through holes, the loading lower cover plate is arranged in the U-shaped bolts, two ends of the loading lower cover plate are respectively erected on the inner sides of arc-shaped bent parts at the bottoms of the U-shaped bolts, the upper surface of the loading lower cover plate is a plane, and the lower surface of the loading lower cover plate is a cylindrical surface and can be matched with the inner side faces of the arc-shaped bent parts at the bottoms of the U-shaped bolts;
the two vertical plates are vertically fixed on the bottom plates and are parallel to each other, grooves are formed in the tops of the two bottom plates, the cross sections of the grooves are of semicircular structures, two ends of each pin shaft are respectively erected in the grooves in the tops of the two vertical plates, two groups of supporting seats are respectively arranged under two ends of the auxiliary springs made of composite materials, the two pin shafts are parallel and located on the same horizontal plane, and the axial direction of each pin shaft is perpendicular to the arrangement direction of the two U-shaped bolts.
3. The composite auxiliary spring simulated loading bench test method according to claim 1, wherein the method comprises the following steps: in the step (4), a rectangular coordinate system is established, the X axis is the displacement value of the auxiliary spring, the Y axis is the load value of the auxiliary spring, and the collected loading process data and unloading process data are subjected to linear regression processing to obtain a linear straight line, wherein the slope of the linear straight line is the static stiffness value of the auxiliary spring.
4. The method for simulating a loading bench test of a composite auxiliary spring according to claim 3, wherein the method comprises the following steps of: in the step (1), a washer-type load sensor is sleeved below the nut of the U-shaped bolt and used for monitoring the torque attenuation condition of the U-shaped bolt in real time, and when the torque attenuation is 10%, the U-shaped bolt is restarted after the torque is required to be stopped and re-tightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111230315.1A CN114166533B (en) | 2021-10-21 | 2021-10-21 | Composite auxiliary spring simulated loading bench test device and test method |
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| CN202111230315.1A CN114166533B (en) | 2021-10-21 | 2021-10-21 | Composite auxiliary spring simulated loading bench test device and test method |
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| CN114166533B true CN114166533B (en) | 2024-04-05 |
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| CN203142333U (en) * | 2013-01-24 | 2013-08-21 | 中国第一汽车股份有限公司 | Rubber auxiliary spring composite rear suspension system |
| CN104002632A (en) * | 2014-06-10 | 2014-08-27 | 安徽江淮汽车股份有限公司 | Vehicle and plate spring suspension assembly thereof |
| CN107478445A (en) * | 2017-07-25 | 2017-12-15 | 中国第汽车股份有限公司 | The bench test device and test method of the auxiliary spring compound suspension frame system of commercial car rubber |
| WO2018234414A1 (en) * | 2017-06-22 | 2018-12-27 | Hendrickson Commercial Vehicle Systems Europe Gmbh | Method for determining the loading state of a leaf spring |
| CN109269794A (en) * | 2018-11-11 | 2019-01-25 | 张群 | A kind of test method based on leaf springs of car test equipment |
| CN110296820A (en) * | 2019-06-03 | 2019-10-01 | 中国纺织科学研究院有限公司 | A kind of longitudinal composite material plate spring performance testing device and test method |
| CN210401093U (en) * | 2019-05-30 | 2020-04-24 | 上海新力动力设备研究所 | Pressure-shear combined loading test device for flexible joint elastic part material |
-
2021
- 2021-10-21 CN CN202111230315.1A patent/CN114166533B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203142333U (en) * | 2013-01-24 | 2013-08-21 | 中国第一汽车股份有限公司 | Rubber auxiliary spring composite rear suspension system |
| CN104002632A (en) * | 2014-06-10 | 2014-08-27 | 安徽江淮汽车股份有限公司 | Vehicle and plate spring suspension assembly thereof |
| WO2018234414A1 (en) * | 2017-06-22 | 2018-12-27 | Hendrickson Commercial Vehicle Systems Europe Gmbh | Method for determining the loading state of a leaf spring |
| CN107478445A (en) * | 2017-07-25 | 2017-12-15 | 中国第汽车股份有限公司 | The bench test device and test method of the auxiliary spring compound suspension frame system of commercial car rubber |
| CN109269794A (en) * | 2018-11-11 | 2019-01-25 | 张群 | A kind of test method based on leaf springs of car test equipment |
| CN210401093U (en) * | 2019-05-30 | 2020-04-24 | 上海新力动力设备研究所 | Pressure-shear combined loading test device for flexible joint elastic part material |
| CN110296820A (en) * | 2019-06-03 | 2019-10-01 | 中国纺织科学研究院有限公司 | A kind of longitudinal composite material plate spring performance testing device and test method |
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| CN114166533A (en) | 2022-03-11 |
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