CN212007818U - Load loading device for fatigue life test of automobile suspension - Google Patents
Load loading device for fatigue life test of automobile suspension Download PDFInfo
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- CN212007818U CN212007818U CN202020510239.4U CN202020510239U CN212007818U CN 212007818 U CN212007818 U CN 212007818U CN 202020510239 U CN202020510239 U CN 202020510239U CN 212007818 U CN212007818 U CN 212007818U
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- fatigue life
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- life test
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Abstract
The utility model belongs to automotive suspension's test field has especially related to an automotive suspension fatigue life test load loading device. The load loading device for the fatigue life test of the automobile suspension comprises a suspension assembly to be tested, a power output structure, a crank connecting rod structure, a device support, a simulation automobile body and the like. The suspension assembly that is surveyed is installed on the device support, and the simulation automobile body is installed to the other end of suspension assembly, and power take off structure links to each other with crank connecting rod structure, and crank connecting rod structure links to each other with the simulation automobile body to make power transmission give the automobile body, drive the motion of simulation automobile body through the periodic motion of crank connecting rod, thereby reach the effect of simulation automobile body motion load.
Description
Technical Field
The utility model belongs to car capability test field especially relates to an automotive suspension fatigue life test load loading device.
Background
In recent years, with the progress of science and technology, the development of social economy and the gradual improvement of the living standard of people, people have more and more requirements on automobiles, the use of automobiles is more and more popular, and automobile suspensions are important components of automobiles, and technically speaking, the automobile suspensions refer to a general term of all transmission devices among frames, automobile bodies and axles. Vertical reaction forces (supporting forces), longitudinal reaction forces (traction and braking forces) and lateral reaction forces acting on the wheels from the road surface, as well as moments generated by these forces, are transmitted to the frame (or the load-bearing vehicle body) through the suspension. The main functions of the automotive suspension system are to transmit these forces and moments, and simultaneously, alleviate the impact load transmitted to the frame or the automobile body from an uneven road surface, suppress irregular vibration of the wheels, and improve the smoothness (riding comfort) and safety (handling stability) of the vehicle. The suspension system is a key component influencing the performance of the automobile, so that the performance of the suspension directly influences the riding comfort and the operating stability of the automobile, and how to design the automobile capable of meeting the durability requirement on the premise of ensuring the safety, comfort, energy conservation and environmental protection of the automobile is an important challenge in the current automobile design. The failure of a structure under dynamic loading far below the static load failure strength is fatigue failure. The fatigue life of the automobile suspension is a main index of the suspension, and the research on the fatigue life of the automobile suspension is mainly an application mode of the suspension load and is used for simulating the main stress condition of the suspension during working.
The method for predicting the fatigue life of the modern automobile comprises the following steps: one is a real vehicle test, in which a sample vehicle is manufactured to perform a durability test on a reinforced road surface, which may have the disadvantages of high cost and long period, and the problems found in the test may not be complete and may be a single problem, and one is a method in which a virtual test is performed to analyze a virtual model by simulation to obtain a fatigue life, which may have a low cost and a short period, and may find defects at the initial stage of design, but may not accurately predict the fatigue life. The other type is also fatigue testing through a device, for example, chinese utility model specification CN204043931U announced by 2014.12.24 discloses a fatigue testing system of a vehicle hydraulic interconnected suspension system, the device is used for driving 4 hydraulic cylinders of the vehicle hydraulic interconnected suspension system to synchronously compress or synchronously stretch through a driving structure, and the driving mechanism enables piston rods of the 4 hydraulic cylinders to synchronously make reciprocating translational motion. The utility model discloses a structure is comparatively complicated relatively speaking, and the assembly is troublesome, and experimental cost is high, and the operation is inconvenient.
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a simple structure, convenient operation, convenient assembling, short period, the experimental load loading device of automotive suspension fatigue life of low experimental cost.
Disclosure of Invention
The utility model provides an automotive suspension fatigue life test load loading device, simple structure, convenient operation, the assembly is simple and easy, can shorten the verification cycle of suspension development and reduce the device of experimental cost.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
the utility model provides an automotive suspension fatigue life test load loading device, is including playing device support (14) of whole supporting role, its characterized in that: the device support (14) comprises a bottom layer frame and an upper layer frame, wherein a bearing column for supporting the upper layer frame is arranged on the bottom layer frame, a bottom plate is arranged on the bottom layer frame, and a power output structure and a driving mechanism are arranged on the bottom plate; the power output structure comprises a motor (1), a speed reducer (5), belt wheel assemblies (2, 3 and 4) and a coupler (6), wherein the belt wheel assemblies (2, 3 and 4) are connected with the speed reducer (5), the motor (1) is connected with an input shaft of the speed reducer (5), one end of the coupler (6) is connected with an output shaft of the speed reducer (5), and the other end of the coupler (6) is connected with a crank link mechanism; the driving mechanism is a crank connecting rod mechanism and comprises crank bearing seats (7), cranks (8) and connecting rods (9), the cranks (8) are positioned among the 2 crank bearing seats (7) and connected with the crank bearing seats, and one ends of the connecting rods (9) are connected with the cranks (8); the other end of the connecting rod (9) is connected with a simulated vehicle body (12), and a connecting piece which can be used for connecting a suspension assembly is arranged between the simulated vehicle body (12) and an upper layer frame of the device bracket (14); a sensor acquisition module (13) is arranged between the simulation vehicle body (12) and the device bracket (14).
The improvement of the technical scheme is that a connecting piece (15) connected with the connecting rod (9) is arranged on the simulated vehicle body, the connecting way of the connecting piece (15) and the simulated vehicle body is in threaded connection, and the connecting way of the connecting piece (15) and the connecting rod (9) is in hinge connection.
The technical scheme is further improved in that threaded holes connected with the suspension assembly are arranged on the device bracket (14) and a connecting piece used for connecting the suspension assembly on the simulated vehicle body (12).
The technical scheme is further improved in that the sensor acquisition module (13) is connected with the PLC data acquisition module.
Has the advantages that:
the utility model discloses an automotive suspension fatigue life test load loading device, the device only contain a set of power take off structure and a set of crank link mechanism, and power take off mechanism transmits power for actuating mechanism, and crank link mechanism transmits power for the simulation automobile body, through the periodic motion of crank link to the motion load of simulation automobile body. Therefore, the load loading device for the fatigue life test of the automobile suspension has the advantages of simple structure and simple operation and control, and can effectively shorten the development period and reduce the development cost;
and, the utility model discloses in, preceding suspension assembly, back suspension assembly and device support, the connected mode of simulation automobile body be threaded connection, therefore preceding suspension assembly, back suspension assembly can be replaced, and install on the simulation automobile body and can change according to the suspension assembly of difference with the connecting piece that the one end of connecting rod is connected. Therefore, the device can adapt to fatigue life test load loading of suspensions of different models, and the effect of saving test expenses is achieved.
Drawings
FIG. 1 is a schematic structural diagram of a load loading device for an automobile suspension fatigue life test.
Fig. 2 is a using state diagram of the load loading device for the fatigue life test of the automobile suspension.
FIG. 3 is a control schematic diagram of the load loading device for the fatigue life test of the automobile suspension.
Reference numbers in the figures: 1. an electric motor; 2. 3, 4, a belt wheel assembly; 5. a speed reducer; 6. a coupling; 7. a crank bearing seat; 8. a crank; 9. a connecting rod; 10. a rear suspension assembly; 11. a front suspension assembly; 12. simulating a vehicle body; 13. a sensor acquisition module; 14. a device holder; 15. a connecting member.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in fig. 1 and 2, the utility model discloses a loading device for fatigue life test of automobile suspension, including measured front suspension assembly 11 and rear suspension assembly 10, simulation automobile body 12, actuating mechanism, power take-off structure, sensor acquisition module 13, device support 14, connecting piece 15.
The device support 14 comprises a bottom layer frame and an upper layer frame, a bearing column for supporting the upper layer frame is arranged on the bottom layer frame, a bottom plate is arranged on the bottom layer frame, and a power output mechanism and a driving mechanism are arranged on the bottom plate of the device support 14.
The power output structure comprises a motor 1, belt wheel assemblies 2, 3 and 4, a speed reducer 5 and a coupling 6; the driving mechanism is a crank connecting rod mechanism and comprises a crank bearing seat 7, a crank 8 and a connecting rod 9; wherein band pulley assembly 2, 3, 4 link to each other with speed reducer 5, and motor 1 links to each other with speed reducer 5's input shaft, and the one end of shaft coupling 6 links to each other with speed reducer 5's output shaft, and the other end links to each other with crank link mechanism, and crank 8 is located between 2 crank bearing seats 7 and links to each other with it, and the one end of connecting rod 9 links to each other with crank 8, and the other end of connecting rod 9 links to each other with simulation automobile body 12.
The embodiment of the utility model provides an in preceding suspension assembly 11 and back suspension assembly 10 be the test object, and preceding suspension assembly 11 and back suspension assembly 10 are installed on the upper frame of device support 14, and simulation automobile body 12 is installed on preceding suspension assembly 11 and back suspension assembly 10, installs sensor acquisition module 13 between simulation automobile body 12 and device support 14.
As shown in a control schematic diagram of fig. 3, the model of the PLC is mitsubishi FX3U series, the sensor acquisition module 13 is connected with the PLC data acquisition module, the sensor acquisition module 13 transmits data to the PLC through the AD expansion module, the PLC transmits the data to the PC, and the PLC is provided with an operation button and a corresponding signal lamp.
In practical application, the motor 1 is used as a power source of the device, force is transmitted to the speed reducer 5 through the belt wheel assemblies 2, 3 and 4, the speed reducer 5 transmits the force to the crank-link mechanism through the coupler 6, the connecting rod 9 of the crank-link mechanism is connected with the simulated vehicle body 12, and the motion load of the vehicle body is simulated through the periodic motion of the crank-link. The sensor acquisition module 13 acquires the operating pressure conditions of the front suspension assembly 11 and the rear suspension assembly 10 through the simulated movement of the vehicle body.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an automotive suspension fatigue life test load loading device, is including playing device support (14) of whole supporting role, its characterized in that: the device support (14) comprises a bottom layer frame and an upper layer frame, wherein a bearing column for supporting the upper layer frame is arranged on the bottom layer frame, a bottom plate is arranged on the bottom layer frame, and a power output structure and a driving mechanism are arranged on the bottom plate; the power output structure comprises a motor (1), a speed reducer (5), belt wheel assemblies (2, 3 and 4) and a coupler (6), wherein the belt wheel assemblies (2, 3 and 4) are connected with the speed reducer (5), the motor (1) is connected with an input shaft of the speed reducer (5), one end of the coupler (6) is connected with an output shaft of the speed reducer (5), and the other end of the coupler (6) is connected with a crank link mechanism; the driving mechanism is a crank connecting rod mechanism and comprises crank bearing seats (7), cranks (8) and connecting rods (9), the cranks (8) are positioned among the 2 crank bearing seats (7) and connected with the crank bearing seats, and one ends of the connecting rods (9) are connected with the cranks (8); the other end of the connecting rod (9) is connected with a simulated vehicle body (12), and a connecting piece which can be used for connecting a suspension assembly is arranged between the simulated vehicle body (12) and an upper layer frame of the device bracket (14); a sensor acquisition module (13) is arranged between the simulation vehicle body (12) and the device bracket (14).
2. The automobile suspension fatigue life test load loading device according to claim 1, wherein a connecting piece (15) connected with the connecting rod (9) is mounted on the simulated automobile body, the connecting piece (15) is in threaded connection with the simulated automobile body, and the connecting piece (15) is in hinged connection with the connecting rod (9).
3. The automobile suspension fatigue life test load loading device according to claim 1 or 2, wherein a threaded hole connected with the suspension assembly is arranged on the device bracket (14) and a connecting piece used for connecting the suspension assembly on the simulated automobile body (12).
4. The automobile suspension fatigue life test load loading device according to claim 1 or 2, wherein the sensor acquisition module (13) is connected with a PLC data acquisition module.
5. The automobile suspension fatigue life test load loading device according to claim 3, wherein the sensor acquisition module (13) is connected with a PLC data acquisition module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020510239.4U CN212007818U (en) | 2020-04-09 | 2020-04-09 | Load loading device for fatigue life test of automobile suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020510239.4U CN212007818U (en) | 2020-04-09 | 2020-04-09 | Load loading device for fatigue life test of automobile suspension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212007818U true CN212007818U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020510239.4U Active CN212007818U (en) | 2020-04-09 | 2020-04-09 | Load loading device for fatigue life test of automobile suspension |
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| Country | Link |
|---|---|
| CN (1) | CN212007818U (en) |
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2020
- 2020-04-09 CN CN202020510239.4U patent/CN212007818U/en active Active
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