CN113776861A - Device for verifying stability and service life of active suspension - Google Patents
Device for verifying stability and service life of active suspension Download PDFInfo
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- CN113776861A CN113776861A CN202111013995.1A CN202111013995A CN113776861A CN 113776861 A CN113776861 A CN 113776861A CN 202111013995 A CN202111013995 A CN 202111013995A CN 113776861 A CN113776861 A CN 113776861A
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- rocker arm
- loading
- main rocker
- included angle
- rear main
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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 discloses a device for verifying the stability and the service life of an active suspension, which comprises an included angle adjusting mechanism fixed on an included angle fixing device, and also comprises a front main rocker arm loading verifying device and/or a rear main rocker arm loading verifying device; the front main rocker arm loading verification device comprises a front main rocker arm and a first loading device, and the front main rocker arm is connected with an included angle front main rocker arm output shaft of an included angle adjusting mechanism; 1 first wheel assembly is arranged on the front main rocker arm; the first loading device is placed at the lower part of the first wheel assembly; the rear main rocker arm loading verification device comprises a rear main rocker arm, an auxiliary rocker arm and two second loading devices, and the rear main rocker arm is connected with an included angle rear main rocker arm output shaft of the included angle adjusting mechanism; the auxiliary rocker arm is connected with the rear main rocker arm; two second wheel assemblies are mounted on the auxiliary rocker arm; the two second loading devices are respectively arranged at the lower parts of the two second wheel assemblies. The invention can test and verify the stability and the service life of the active suspension under the bumping load.
Description
Technical Field
The invention relates to the technical field of planet vehicle testing devices, in particular to a device for verifying the stability and service life of an active suspension.
Background
The planet vehicle runs on different planet balls, and the terrain is complex and changeable, and comprises a flat ground, soft soil, a gravel road, a climbing slope, obstacle crossing and the like. In order to adapt to complex terrains, a rocker arm type active suspension mechanism is designed for a Mars vehicle in China, and a single-input double-output included angle adjusting mechanism with a self-locking function is designed at a main shaft and used for adjusting the included angle between a front main rocker arm and a rear main rocker arm and keeping the position unchanged due to jolting in driving and long-term stress.
However, in the prior art, no device can simulate a celestial body surface bumpy terrain and verify key indexes such as self-locking capability, stability, fatigue life and the like of an included angle adjusting mechanism in a high-temperature and low-temperature environment.
Therefore, it is an urgent need to solve the problem of providing an active suspension stability life verification device capable of simulating the star terrain.
Disclosure of Invention
In view of the above, the invention provides a device for verifying the stability and the service life of an active suspension, which is used for testing and verifying the stability and the service life of the active suspension under a bumpy driving load.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an active suspension stability life-span verification device, includes the contained angle adjustment mechanism who fixes on contained angle fixing device, still includes: a front main rocker arm loading verification device and/or a rear main rocker arm loading verification device;
wherein, preceding main rocking arm loading verifying attachment includes:
the front main rocker arm is connected with an included angle front main rocker arm output shaft of the included angle adjusting mechanism; 1 first wheel assembly is arranged on the front main rocker arm;
a first loading device placed at a lower portion of the first wheel assembly;
the rear main rocker arm loading verification device comprises:
the rear main rocker arm is connected with an included angle rear main rocker arm output shaft of the included angle adjusting mechanism;
the auxiliary rocker arm is connected with the rear main rocker arm; two second wheel assemblies are mounted on the auxiliary rocker arm;
and the two second loading devices are respectively placed at the lower parts of the two second wheel assemblies.
By adopting the scheme, the invention has the beneficial effects that:
1) the first loading device and the second loading device respectively apply an initial load to the first wheel assembly and the second wheel assembly, the front main rocker arm and the rear main rocker arm can respectively simulate the surface bump topography of a planet, the first loading device and the second loading device can realize the test of the simulated bump loading of the active suspension according to the given frequency, displacement or moment fluctuation amplitude, so that the test verification of the stability and the service life of the active suspension under the bump loading is realized, and the key indexes of the included angle adjusting mechanism such as self-locking capability, stability performance, fatigue life and the like under high and low temperature environments are examined.
2) The front main rocker arm and the rear main rocker arm can be used for testing together or respectively, so that the test is simplified, the size of the high-low temperature box is reduced, and the cost is saved.
Further, the first loading device and the first loading device have the same structure and respectively comprise a vibration exciter, a power output device, a guide device, a wheel tray and a spring; the vibration exciter shell is fixed on the ground; the power output device is fixedly connected with an output shaft of the vibration exciter, and guide grooves are formed in two sides of a box body of the power output device; the guide device is arranged in the guide groove; the wheel tray is installed on the upper portion of the power output device through the spring.
The further technical scheme has the advantages that the first wheel assembly and/or the second wheel assembly are/is placed on the wheel tray, the natural state is kept, the power output device and the compression spring are adjusted, so that the first wheel assembly and/or the second wheel assembly bear an initial load, namely the load for supporting the vehicle body when the wheels land, a certain margin can be increased according to test requirements, the vibration exciter is set to perform vibration excitation loading according to given frequency, displacement or moment fluctuation amplitude, and under the constraint of the guide device, the vibration excitation load is applied to the first wheel assembly and/or the second wheel assembly through the buffer action of the spring, so that the service life assessment of different bump loads, bump frequencies and bump times is realized, and any terrain characteristic is simulated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an active suspension stability life verification apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a front primary rocker arm loading verification device provided by the present invention;
FIG. 3 is a schematic structural view of a rear primary rocker arm loading verification device provided by the present invention;
fig. 4 is a schematic structural diagram of a first loading device provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
As shown in fig. 1-4, the embodiment of the present invention discloses an active suspension stability life verification apparatus, which includes an included angle adjusting mechanism 2 fixed on an included angle fixing device 1, and further includes: a front main rocker arm loading verification device and/or a rear main rocker arm loading verification device;
wherein, preceding main rocking arm loading verifying attachment includes:
the front main rocker arm 3 is connected with an included angle front main rocker arm output shaft 21 of the included angle adjusting mechanism 2; the front main rocker arm 3 is provided with 1 first wheel assembly 4;
a first loading device 5, wherein the first loading device 5 is placed at the lower part of the first wheel component 4;
the back main rocker arm loading verification device comprises:
the rear main rocker arm 6, the rear main rocker arm 6 is connected with the included angle rear main rocker arm output shaft 22 of the included angle adjusting mechanism 2;
the auxiliary rocker arm 7, the auxiliary rocker arm 7 is connected with the rear main rocker arm 6; two second wheel assemblies 8 are arranged on the auxiliary rocker arm 7;
and two second loading devices 9, wherein the two second loading devices 9 are respectively placed at the lower parts of the two second wheel assemblies 8.
According to the invention, the first loading device 5 and the second loading device 9 respectively apply an initial load to the first wheel assembly 4 and the second wheel assembly 8 to simulate the load when the planet vehicle is supported on the ground, and the first loading device 5 and the second loading device 9 can realize the test of the simulated driving bump loading of the active suspension according to the given frequency, displacement or moment fluctuation amplitude, so that the test and verification of the stability and the service life of the active suspension under the driving bump load are realized; and the front main rocker arm 3 and the rear main rocker arm 6 can be used for testing together or respectively, so that the test is simplified, the size of the high-low temperature box is reduced, and the cost is saved.
Specifically, the first loading device 5 and the first loading device 9 have the same structure, and each of the first loading device and the first loading device comprises an exciter 51, a power output device 52, a guide device 53, a wheel tray 54 and a spring 55; the vibration exciter 51 shell is fixed on the ground; the power output device 52 is fixedly connected with an output shaft of the vibration exciter 51, and guide grooves are formed in two sides of a box body of the power output device 52; the guide device 53 is arranged in the guide groove; a wheel tray 54 is mounted on the upper portion of the power take-off 52 by a spring 55.
In the test, an included angle adjusting mechanism 2 is fixed on an included angle fixing device 1, a front main rocker arm 3 is fixedly connected with an included angle front main rocker arm output shaft 21, a rear main rocker arm 6 is connected with an included angle rear main rocker arm output shaft 22 to form a basic configuration of an active suspension loading test, a first loading device 5 and a second loading device 9 are respectively installed at the lower ends of a first wheel assembly 4 and a second wheel assembly 8, the basic positions of the first loading device 5 and the second loading device 9 are adjusted, an initial load is respectively applied to the first wheel assembly 4 and the second wheel assembly 8, the load when the planet vehicle is supported flatly is simulated, in the process, a vibration exciter 51 works to push a power output device 52 to move up and down, the load change is simulated, the force control loading or displacement control loading can be adopted according to the loading requirement and the rigidity of a spring 55, and the direction unbalance loading is prevented by a guide device 53, the wheel tray 54 is used for supporting the first wheel assembly 4 and the second wheel assembly 8, only the vertical loading direction is restricted, other movement directions are released, loading interference is prevented, the spring 55 is used for providing a loading force and forming a buffer stroke to prevent the vibration exciter 51 from directly acting on the first wheel assembly 4 and the second wheel assembly 8, so that the active suspension of the rigid suspension structure is damaged,
if the active suspension is placed in the high-low temperature box, the first loading device 5, the second loading device 9 and the included angle fixing device 1 are placed outside the high-low temperature box, and the active suspension passes through the high-low temperature box through the coupler to be connected and fixed, so that the stability and service life test verification of the active suspension under the high-low temperature environment can be realized.
It should be noted that: the front main rocker arm 3 is a single mechanism, the loading can be independently carried out, but a freely rotating kinematic pair is arranged between the auxiliary rocker arm 7 connected with the middle wheel and the rear main rocker arm 6, if the loading can not be well matched, the loading failure is easily caused, and two methods can be adopted during the testing loading: fixing a second loading device 9 corresponding to one second wheel assembly 8, working the other second loading device 9, and replacing the loading sequence after the test is finished; secondly, the two second loading devices 9 need to perform time synchronization, the amplitude and the phase sequence of the loading curve in the loading process are ensured to be completely matched, and the control strategy is similar to the vibration table control strategy of the multiple vibration exciters 51, so that the two second wheel assemblies 8 are loaded simultaneously, and mutual interference cannot exist.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides an initiative suspension stability life-span verification device, is including fixing the contained angle adjustment mechanism on contained angle fixing device, its characterized in that still includes: a front main rocker arm loading verification device and/or a rear main rocker arm loading verification device;
wherein, preceding main rocking arm loading verifying attachment includes:
the front main rocker arm is connected with an included angle front main rocker arm output shaft of the included angle adjusting mechanism; 1 first wheel assembly is arranged on the front main rocker arm;
a first loading device placed at a lower portion of the first wheel assembly;
the rear main rocker arm loading verification device comprises:
the rear main rocker arm is connected with an included angle rear main rocker arm output shaft of the included angle adjusting mechanism;
the auxiliary rocker arm is connected with the rear main rocker arm; two second wheel assemblies are mounted on the auxiliary rocker arm;
and the two second loading devices are respectively placed at the lower parts of the two second wheel assemblies.
2. The active suspension stability life verification device according to claim 1, wherein the first loading device and the first loading device are identical in structure and comprise an exciter, a power output device, a guide device, a wheel tray and a spring; the vibration exciter shell is fixed on the ground; the power output device is fixedly connected with an output shaft of the vibration exciter, and guide grooves are formed in two sides of a box body of the power output device; the guide device is arranged in the guide groove; the wheel tray is installed on the upper portion of the power output device through the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111013995.1A CN113776861A (en) | 2021-08-31 | 2021-08-31 | Device for verifying stability and service life of active suspension |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111013995.1A CN113776861A (en) | 2021-08-31 | 2021-08-31 | Device for verifying stability and service life of active suspension |
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| CN113776861A true CN113776861A (en) | 2021-12-10 |
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| CN202111013995.1A Pending CN113776861A (en) | 2021-08-31 | 2021-08-31 | Device for verifying stability and service life of active suspension |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636569A (en) * | 2022-03-29 | 2022-06-17 | 福州大学 | Multi-axis vehicle experiment bench capable of realizing dynamic load simulation and working method thereof |
| CN114858425A (en) * | 2022-03-10 | 2022-08-05 | 上海第二机床电器厂有限公司 | Mechanical life detection device for self-locking rocker arm type electronic element and use method thereof |
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| CN111238849A (en) * | 2020-01-22 | 2020-06-05 | 哈尔滨工业大学 | Performance testing device for Mars vehicle moving system |
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| US6058614A (en) * | 1997-06-06 | 2000-05-09 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for measuring alignment of suspension and method of inspecting suspension by using said apparatus |
| EP1234694A2 (en) * | 2001-02-21 | 2002-08-28 | Hyundai Motor Company | System for analyzing a suspension system |
| CN105235468A (en) * | 2015-10-22 | 2016-01-13 | 哈尔滨工业大学 | Active suspension type Mars rover moving mechanism |
| CN109187056A (en) * | 2018-09-20 | 2019-01-11 | 中信戴卡股份有限公司 | A kind of wheel suspension with true road surface characteristic is test bed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114858425A (en) * | 2022-03-10 | 2022-08-05 | 上海第二机床电器厂有限公司 | Mechanical life detection device for self-locking rocker arm type electronic element and use method thereof |
| CN114858425B (en) * | 2022-03-10 | 2024-05-03 | 上海第二机床电器厂有限公司 | Mechanical life detection device for self-locking rocker arm type electronic element and use method thereof |
| CN114636569A (en) * | 2022-03-29 | 2022-06-17 | 福州大学 | Multi-axis vehicle experiment bench capable of realizing dynamic load simulation and working method thereof |
| CN114636569B (en) * | 2022-03-29 | 2023-12-22 | 福州大学 | Multi-axle vehicle experiment bench capable of realizing dynamic load simulation and working method thereof |
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Application publication date: 20211210 |
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