CN113758731A - Quadruplex position automotive suspension durability test device - Google Patents
Quadruplex position automotive suspension durability test device Download PDFInfo
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- CN113758731A CN113758731A CN202111191578.6A CN202111191578A CN113758731A CN 113758731 A CN113758731 A CN 113758731A CN 202111191578 A CN202111191578 A CN 202111191578A CN 113758731 A CN113758731 A CN 113758731A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
A four-station automobile suspension durability test device comprises a cast iron platform, a suspension mounting base, a suspension mounting assembly, a hydraulic servo actuator, an actuator mounting tailstock, a transmission assembly and a suspension connecting assembly; the suspension mounting assembly comprises a cast iron platform, a suspension mounting base, a suspension mounting assembly and a suspension mounting component, wherein the cast iron platform is provided with the suspension mounting base; the two sides of the suspension mounting assembly are used for mounting the tested suspension assembly; the tail end of the hydraulic servo actuator is hinged with the actuator mounting tailstock, and the rod end of the hydraulic servo actuator is hinged with the transmission assembly; the actuator installation tailstock and the transmission assembly are both arranged on the cast iron platform; suspension coupling assembling's one end and being connected by the test suspension subassembly, the other end is connected with transmission assembly, and hydraulic servo actuator drives, carries out vertical actuation to two sets of tested suspension subassemblies with one side simultaneously through transmission assembly, suspension coupling assembling. The device can simultaneously perform tests on four groups of suspensions and also perform durability tests on the suspensions on the two sides of the same shaft, and has high test efficiency.
Description
Technical Field
The invention belongs to the technical field of automobile suspensions, relates to an automobile suspension testing device, and particularly relates to a four-station automobile suspension durability testing device.
Background
The automobile suspension is directly related to the running safety, the operation stability and the riding comfort of the vehicle. Therefore, each automobile manufacturer places particular emphasis on the performance, particularly durability, of the vehicle suspension; the demands of users on the durability of the chassis of the motor vehicle, in particular the durability of the suspension, are also increasing. Based on this, each automobile manufacturer needs to perform durability test on the suspension parts in the process of automobile research and development, trial production and mass production, so as to provide design/improved technical support for automobile suspension design.
At present, automobile suspension part durability test equipment adopted by domestic automobile manufacturers has single function, and generally is special equipment, such as a swing arm durability test machine, a shock absorber durability test machine, a bushing durability test machine, suspension durability test equipment adopting an actuator to directly drive a suspension and the like. The structural forms listed above all have certain disadvantages and shortcomings, which are specifically shown in the following: the durability test of a single suspension part is difficult to reproduce the stress state of the single suspension part when the single suspension part is installed on a real vehicle, so that the test result is inaccurate; secondly, each part needs a set of test equipment, so that repeated investment is caused, and excessive research and development funds are occupied; and thirdly, the testing efficiency is low, and the testing period is increased. Therefore, it is necessary to develop a new device for testing durability of an automotive suspension.
Disclosure of Invention
The invention aims to provide a four-station automobile suspension durability test device which is driven by a hydraulic servo actuator, vertically actuates two groups of automobile suspensions through a transmission assembly at the same time, simulates the stress of the suspensions when wheels are subjected to vertical load, so as to test the durability of the automobile suspensions and suspension parts, and has a steering driving function for a front suspension.
In order to achieve the purpose, the invention adopts the following technical scheme:
a four-station automobile suspension durability test device comprises a cast iron platform, a suspension mounting base, a suspension mounting assembly, a hydraulic servo actuator, an actuator mounting tailstock, a transmission assembly and a suspension connecting assembly; the cast iron platform is provided with two suspension mounting bases, and each suspension mounting base is provided with a suspension mounting assembly; the two suspension mounting assemblies have the same or different structures, and both sides of each suspension mounting assembly are used for mounting a tested suspension assembly; the tail end of the hydraulic servo actuator is hinged with the actuator mounting tailstock, and the rod end of the hydraulic servo actuator is hinged with the transmission assembly; the actuator installation tailstock and the transmission assembly are both installed on the cast iron platform; the one end of suspension coupling assembling with by the suspension subassembly connection, the other end is connected with transmission assembly, and hydraulic servo actuator drives, carries out vertical actuation to two sets of by the suspension subassemblies of being tested with one side simultaneously through transmission assembly, suspension coupling assembling.
Preferably, the device also comprises a steering driving component, a constant temperature test box, a hydraulic pump station and a control system; the steering driving assembly is selectively arranged on the suspension mounting base and positioned on the outer side of the suspension mounting assembly, and the steering driving assembly is used for driving a steering machine of the tested suspension assembly to steer; the constant temperature test box is arranged on the suspension mounting base, and the suspension mounting assembly and the tested suspension assembly are arranged in the constant temperature test box; the hydraulic pump station is connected with the hydraulic servo actuator through a hydraulic pipeline; the control system is used for controlling the opening/closing of the hydraulic pump station and controlling the actuating frequency and amplitude of the hydraulic servo actuator; and meanwhile, acquiring the displacement value of the hydraulic servo actuator and the value of a tension pressure sensor of the suspension connecting assembly.
Preferably, the cast iron platform comprises two operating platforms and an equipment mounting platform; the two operating platforms are arranged on two sides of the equipment mounting platform and are horizontally connected with the equipment mounting platform; the device mounting platform is transversely provided with a plurality of sliding grooves at positions opposite to the transmission assembly and the actuator mounting tailstock, and the device mounting platform is longitudinally provided with a plurality of sliding grooves at positions opposite to the suspension mounting base.
Preferably, the steering driving assembly comprises a mounting seat, a servo motor, a speed reducer mounting seat, a torque sensor, a coupling and a connecting rod; the mounting seat is arranged on the outer side of the front suspension base, the speed reducer mounting seat is arranged on the mounting seat, the servo motor is fixedly connected with the speed reducer mounting seat after being connected with the speed reducer, the speed reducer is connected with one end of the torque sensor through a coupler, and the other end of the torque sensor is connected with the connecting rod through a coupler; the connecting rod is connected with a steering engine of the tested suspension assembly.
Preferably, the suspension mounting assembly comprises a mounting seat, and shock absorber upper point mounting brackets and suspension guide element mounting frames which are arranged on two sides of the mounting seat; the shock absorber upper point mounting bracket and the suspension guide element mounting frame are mounted on two sides of the mounting seat according to hard point coordinates of the tested suspension assembly in a loading state; when the tested suspension assembly mounted on the suspension mounting assembly is a front suspension, the suspension mounting assembly further comprises a steering gear mounting support.
Preferably, the transmission assembly comprises a tripod base, a tripod, a suspension connecting assembly connecting shaft, a bearing assembly, a tripod rotating shaft and a hydraulic servo actuator rod end connecting shaft; the tripod is arranged in the tripod base, the tripod faces the middle position of the horizontal connecting part of the tested suspension assembly and is fixedly connected with the tripod rotating shaft, and the suspension connecting assembly connecting shafts are arranged at two ends of the horizontal connecting part of the tripod and are used for being connected with the suspension connecting assembly; the bearing assembly is arranged on the tripod base, and two ends of the tripod rotating shaft are connected with the bearing assembly; and the rod end connecting shaft of the hydraulic servo actuator is arranged at the vertex of the lower end of the tripod and is positioned below the rotating shaft of the tripod.
Preferably, the suspension connecting assembly comprises a joint bearing, a sensor mounting seat, a tension and pressure sensor, a lower screw rod seat, a screw rod, an upper screw rod seat, a spherical joint and a wheel support adapter; the bearing end of the knuckle bearing is connected with a connecting shaft of a suspension connecting assembly, the other end of the knuckle bearing is fixedly connected with a sensor mounting seat, the sensor mounting seat is fixedly connected with a tension pressure sensor, the tension pressure sensor is fixedly connected with a lower screw rod seat, the lower screw rod seat is in threaded connection with one end of a screw rod, a left-handed thread is machined at one end of the screw rod, and a right-handed thread is machined at the other end of the screw rod; the other end of the screw rod is in threaded connection with an upper screw rod seat, the upper screw rod seat is in threaded connection with a spherical joint, and a ball rod of the spherical joint is connected with a wheel support adapter; the wheel carrier adapter is bolted to the wheel carrier of the suspension assembly under test.
Preferably, the constant temperature test chamber comprises a test chamber unit and a test chamber middle box body; the middle box body of the test box is arranged on the suspension mounting base, the test box unit is arranged on two sides of the middle box body of the test box, the test box unit is arranged in the test box unit by the tested suspension assembly after being fixed with the middle box body of the test box, and the suspension connecting assembly penetrates through a lower plate hole of the test box unit.
Preferably, the control system comprises a PC, a servo driver and a data acquisition module; the hydraulic servo actuator is characterized in that a servo valve of the hydraulic servo actuator is connected with a servo driver through a communication cable, a displacement sensor, a tension pressure sensor and a torque sensor of the hydraulic servo actuator are connected with a data acquisition module through the communication cable, and a PC (personal computer), the servo driver and the data acquisition module are connected through the communication cable.
As a further preferable mode of the present invention, the tripod comprises two symmetrically arranged triangular plates, the two triangular plates are connected by a connecting plate, and a plurality of mounting holes are processed at the position of the horizontal connecting part of the two triangular plates; the suspension connecting assembly connecting shaft is arranged in any group of mounting holes on two sides; and the rod end connecting shaft of the hydraulic servo actuator is arranged between the two triangular plates and is close to the vertex position of the lower end of the triangular plate.
The invention also aims to provide a using method of the four-station automobile suspension durability testing device, which comprises the following steps:
s1, selecting a tested suspension assembly to be tested, and installing the tested suspension assembly on two sides of a suspension installation assembly according to the hard point coordinates of the tested suspension assembly in the loading state;
step S2, connecting the tested suspension assembly with the suspension connecting assembly, and then adjusting the mounting positions of the two suspension connecting assemblies on the same side on the transmission assembly and the length of the suspension connecting assemblies according to the vertical stroke of the tested suspension assembly;
step S3, the hydraulic pump station is controlled to be started through the control system, the hydraulic servo actuator is controlled to actuate, if the tested suspension component is a front suspension during testing, the steering driving component is controlled to actuate at the same time, the tension pressure sensor and the torque sensor collect data, and the collected data are sent to the control system; when the test device is loaded with vertical displacement/force, sine waves, sine superposition waves and road vertical random waves can be adopted for loading.
The invention has the advantages and beneficial effects that:
1. the device provided by the invention has the advantages of simple and reasonable structure, compact installation, easy operation and simple and convenient maintenance, can be used for simultaneously testing the durability of four groups of suspensions of the same vehicle and longitudinally installing suspensions of two different vehicle types, and can be suitable for independent suspensions and non-independent suspensions by replacing the suspension installation tool; in addition, the device drives the suspension in a road excitation mode, and the mounting of suspension parts is consistent with the loading state of the suspension, so that the test precision can be greatly improved, the test efficiency can be improved, the development and test period of the automobile suspension can be reduced, and the use cost of equipment can be reduced.
2. The device provided by the invention can be used for simultaneously testing four groups of suspensions, and also can be used for testing the performance and the durability of the bilateral suspensions of the same axle of a vehicle, testing the performance and the durability of the quarter suspension, testing the static state of the suspension, testing the characteristics of a suspension system, testing the performance and the durability of a shock absorber and testing the smoothness which is close to the shape of the whole vehicle.
3. The device provided by the invention adopts the hydraulic servo actuator as a power source, and after transmission of the transmission assembly, one actuator simultaneously carries out vertical displacement/force loading on two groups of suspensions; and after the two groups of suspensions are installed, static loads (vertical loads in a loading state) are balanced with each other, so that the driving power of the equipment can be reduced, and the energy consumption is reduced.
4. The length of the suspension connecting component adopted by the test device provided by the invention can be conveniently and quickly adjusted; the spherical hinges are arranged at the two ends, so that the installation is convenient and rapid; and the transmission assembly is provided with different suspension connecting assembly connecting shaft mounting holes, so that the suspension connecting assembly can adapt to the simultaneous installation of two groups of suspensions with different vertical strokes.
Drawings
Fig. 1 is an isometric view of the present invention.
FIG. 2 is an isometric view of the present invention after two sets of constant temperature test chamber units are hidden.
Fig. 3 is an isometric view of a hidden constant temperature test chamber of the present invention.
Fig. 4 is a partial enlarged view of fig. 3 of the present invention.
Fig. 5 is a partial enlarged view of another portion of fig. 3 according to the present invention.
FIG. 6 is an isometric view of the steering drive assembly of the present invention
FIG. 7 is an isometric view of the transmission assembly of the present invention.
Fig. 8 is a side view of the transmission assembly of the present invention.
Fig. 9 is an isometric view of the suspension attachment assembly of the present invention.
Fig. 10 is a control block diagram of the present invention.
Reference numerals: the device comprises a cast iron platform 1, a suspension mounting base 2, a steering driving assembly 3, a suspension mounting assembly 4, a tested suspension assembly 5, a hydraulic servo actuator 6, an actuator mounting tailstock 7, a transmission assembly 8, a suspension connecting assembly 9, a constant temperature test box 10, a hydraulic pump station 11, a control system 12, an operating platform 1-1, an equipment mounting platform 1-2, a front suspension base 2-1, a rear suspension base 2-2, a mounting seat 3-1, a servo motor 3-2, a speed reducer 3-3, a speed reducer mounting seat 3-4, a torque sensor 3-5, a coupler 3-6, a connecting rod 3-7, a first mounting seat 4-1, a first shock absorber upper point mounting support 4-2, a first suspension guide element mounting frame 4-3, a second mounting seat 4-4, a tested suspension assembly 5, a hydraulic servo actuator 6, a hydraulic servo motor base, a hydraulic motor base 3, a hydraulic motor, a speed reducer mounting base 3, a torque sensor and a control system, 4-5 parts of a second shock absorber upper point mounting bracket, 4-6 parts of a second suspension guide element mounting bracket, 5-1 parts of a wheel bracket, 5-2 parts of a suspension guide element, 5-3 parts of an air spring shock absorber, 8-1 parts of a tripod base, 8-2 parts of a tripod, 8-3 parts of a suspension connecting assembly connecting shaft, 8-4 parts of a bearing assembly, 8-5 parts of a tripod rotating shaft, 8-6 parts of a hydraulic servo actuator rod end connecting shaft, 8-2-1 parts of a triangular plate, 8-2-2 parts of a connecting plate, 8-2-3 parts of a mounting hole, 9-1 parts of a joint bearing, 9-2 parts of a sensor mounting seat, 9-3 parts of a tension and pressure sensor, 9-4 parts of a lower screw rod seat, 9-5 parts of a screw rod, 9-6 parts of an upper screw rod seat, 9-7 parts of a spherical joint, 9-8 parts of a wheel bracket adapter, The device comprises a test box set 10-1, a test box middle box body 10-2, a PC 12-1, a servo driver 12-2 and a data acquisition module 12-3.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
In the description of the present application, it should be noted that the terms "in", "under", and the like indicate the orientation or positional relationship: the particular arrangements or components shown in the drawings, or the orientations or positional relationships conventionally used in the manufacture of the applications, are for convenience only and to simplify the description, and are not intended to indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1
Referring to fig. 1 to 10, the four-station automotive suspension durability test device provided by the invention comprises a cast iron platform 1, a suspension mounting base 2, a steering driving assembly 3, a suspension mounting assembly 4, a hydraulic servo actuator 6, an actuator mounting tailstock 7, a transmission assembly 8, a suspension connecting assembly 9, a constant temperature test box 10, a hydraulic pump station 11 and a control system 12; the cast iron platform 1 is provided with two suspension mounting bases 2, and each suspension mounting base 2 is provided with a suspension mounting assembly 4; the steering driving component 3 can be selectively installed on the suspension mounting base 2, when the steering driving component 3 is installed on the suspension mounting base 2, the steering driving component 3 is located at the outer side of the suspension mounting component 4, and the steering driving component 3 is used for driving a steering machine of the tested suspension component 5 to steer (when the steering machine is not arranged in the tested suspension component 5, the steering driving component 3 is not needed to be installed on the suspension mounting base 2); the two suspension mounting assemblies 4 have the same or different structures, and both sides of each suspension mounting assembly 4 are used for mounting a tested suspension assembly 5; the tail end of the hydraulic servo actuator 6 is hinged with an actuator mounting tailstock 7, and the rod end of the hydraulic servo actuator 6 is hinged with a transmission assembly 8; the actuator installation tailstock 7 and the transmission assembly 8 are both arranged on the cast iron platform 1; one end of the suspension connecting assembly 9 is connected with the tested suspension assembly 5, the other end of the suspension connecting assembly is connected with the transmission assembly 8, the hydraulic servo actuator 6 is driven, and two groups of tested suspension assemblies 5 on the same side are driven vertically through the transmission assembly 8 and the suspension connecting assembly 9; the constant temperature test box 10 is arranged on the suspension mounting base 2, and the suspension mounting assembly 4 and the tested suspension assembly 5 are arranged in the constant temperature test box 10; the hydraulic pump station 11 is connected with the hydraulic servo actuator 6 through a hydraulic pipeline; the control system 12 is used for controlling the opening/closing of the hydraulic pump station 11 and controlling the actuating frequency and amplitude of the hydraulic servo actuator 6; meanwhile, the displacement value of the hydraulic servo actuator 6 and the value of the tension pressure sensor of the suspension connecting assembly 9 are collected.
Further, the cast iron platform 1 comprises two operating platforms 1-1 and an equipment mounting platform 1-2; the two operating platforms 1-1 are arranged on two sides of the equipment mounting platform 1-2 and are horizontally connected with the equipment mounting platform 1-2; the device mounting platform 1-2 is transversely provided with a plurality of chutes at positions opposite to the transmission assembly 8 and the actuator mounting tailstock 7, the device mounting platform 1-2 is longitudinally provided with a plurality of chutes at positions opposite to the suspension mounting base 2, and the chutes can conveniently adjust and accurately mount the positions of the transmission assembly 8, the actuator mounting tailstock 7 and the suspension mounting base 2.
In addition, in order to enable the test device of the application to simultaneously carry out durability test on four groups of automobile suspensions of the same vehicle, one of the two suspension mounting bases 2 is a front suspension base 2-1, the other one is a rear suspension base 2-2, a front suspension mounting assembly is mounted on the front suspension base 2-1, a rear suspension mounting assembly is mounted on the rear suspension base 2-2, a tested suspension assembly 5 mounted on the front suspension mounting assembly is a front suspension with a steering engine, and the steering engine of the tested suspension assembly 5 is required to be driven to steer through a steering driving assembly 3 mounted on the front suspension base 2-1 during test; the tested suspension assembly 5 arranged on the rear suspension mounting assembly is a rear suspension and has no steering function, and a steering driving assembly 3 is not needed during testing, namely the rear suspension base 2-2 is not needed to be arranged on the rear suspension base 2-2. Of course, in order to enable the test device of the present application to test the suspensions of two different vehicle types installed longitudinally, or to test four different suspensions, the suspension installation base 2 may also be a front suspension base 2-1 or a rear suspension base 2-2, or one of them is a front suspension base and the other is a rear suspension base; the selection of the suspension mounting bases 2 is selected or adjusted according to actual test requirements.
Further, the steering driving assembly 3 comprises a mounting seat 3-1, a servo motor 3-2, a speed reducer 3-3, a speed reducer mounting seat 3-4, a torque sensor 3-5, a coupler 3-6 and a connecting rod 3-7; the mounting seat 3-1 is arranged on the outer side of the front suspension base 2-1, the speed reducer mounting seat 3-4 is arranged on the mounting seat 3-1, the servo motor 3-2 is fixedly connected with the speed reducer mounting seat 3-4 after being connected with the speed reducer 3-3, the speed reducer 3-3 is connected with one end of the torque sensor 3-5 through a coupler 3-6, and the other end of the torque sensor 3-5 is connected with the connecting rod 3-7 through a coupler 3-6; the connecting rods 3-7 are connected to the steering gear of the suspension assembly 5 under test (see fig. 4, 6).
In order to enable the tested suspension assembly 5 to simulate the mounting mode of a real vehicle, one of the two suspension mounting assemblies 4 is a front suspension mounting assembly, and the other suspension mounting assembly is a rear suspension mounting assembly; the front suspension mounting assembly comprises a first mounting seat 4-1, first shock absorber upper point mounting brackets 4-2 arranged on two sides of the first mounting seat 4-1, a first suspension guide element mounting frame 4-3 and a steering engine mounting support; the rear suspension mounting assembly comprises a second mounting seat 4-4, a second shock absorber upper point mounting bracket 4-5 and a second suspension guide element mounting frame 4-6, wherein the second shock absorber upper point mounting bracket 4-5 and the second suspension guide element mounting frame are mounted on two sides of the second mounting seat 4-4; the suspension mounting assembly 4 is mainly used for fixing the tested suspension assembly 5 in a simulated real vehicle mounting mode; therefore, the mounting brackets of the upper points of the shock absorbers, the mounting rack of the suspension guide element and the mounting support of the steering engine on the two sides of the mounting seat can be subjected to position adjustment according to the real vehicle mounting state of the tested suspension assembly 5; namely: and the upper point mounting bracket of the shock absorber, the suspension guide element mounting frame and the steering engine mounting support are mounted on two sides of the mounting seat according to the hard point coordinates of the tested suspension assembly 5 in the loading state.
In addition, in order to make it clear for those skilled in the art how the suspension assembly 5 to be tested is mounted on the suspension mounting assembly 4, the following description will be made with reference to fig. 4 and 5 for an independent suspension, and the shock absorber is an air spring shock absorber.
When the tested suspension assembly 5 is a rear suspension, the tested suspension assembly 5 comprises a wheel bracket 5-1, a suspension guide element 5-2 and an air spring shock absorber 5-3; wherein the suspension guide element 5-2 is mounted on a second suspension guide element mounting bracket 4-6, and the air spring damper 5-3 is mounted on a second damper point mounting bracket 4-5; when the tested suspension assembly 5 is a front suspension, the tested suspension assembly 5 comprises a wheel bracket 5-1, a suspension guide element 5-2, an air spring shock absorber 5-3 and a steering gear; the suspension guide element 5-2 is arranged on a first suspension guide element mounting frame 4-3, and the air spring shock absorber 5-3 is arranged on a first shock absorber upper point mounting bracket 4-2; the steering engine is arranged on the steering engine mounting support.
Furthermore, two hydraulic servo actuators 6 are arranged on two sides of the suspension mounting base 2 and comprise hydraulic servo oil cylinders, servo valves and displacement sensors arranged inside the hydraulic oil cylinders, the actuator mounting tailstock 7 is arranged on the equipment mounting platform 1-2, and the tail ends of the hydraulic servo actuators 6 are hinged to the actuator mounting tailstock 7; the hydraulic servo actuator 6 is hinged with a suspension connecting component connecting shaft 8-3 of the transmission component 8;
the transmission assembly 8 comprises a tripod base 8-1, a tripod 8-2, a suspension connecting assembly connecting shaft 8-3, a bearing assembly 8-4, a tripod rotating shaft 8-5 and a hydraulic servo actuator rod end connecting shaft 8-6; the tripod 8-2 is installed in the tripod base 8-1, the tripod 8-2 is fixedly connected with the tripod rotating shaft 8-5 towards the middle position of the horizontal connecting part a of the tested suspension assembly 5, and the suspension connecting assembly connecting shafts 8-3 are arranged at two ends of the horizontal connecting part a of the tripod and are used for being connected with the suspension connecting assembly 9; the bearing assembly 8-4 is arranged on the tripod base 8-1, and two ends of the tripod rotating shaft 8-5 are connected with the bearing assembly 8-4; the rod end connecting shaft 8-6 of the hydraulic servo actuator is arranged at the vertex of the lower end of the tripod 8-2 and is positioned below the tripod rotating shaft 8-5 (see figures 7 and 8);
the suspension connecting assembly 9 comprises a joint bearing 9-1, a sensor mounting seat 9-2, a tension and pressure sensor 9-3, a lower screw rod seat 9-4, a screw rod 9-5, an upper screw rod seat 9-6, a spherical joint 9-7 and a wheel support adapter 9-8; the bearing end of the knuckle bearing 9-1 is connected with a suspension connecting assembly connecting shaft 8-3, the other end of the knuckle bearing 9-1 is fixedly connected with a sensor mounting seat 9-2, the sensor mounting seat 9-2 is fixedly connected with a pull pressure sensor 9-3, the pull pressure sensor 9-3 is fixedly connected with a lower screw rod seat 9-4, the lower screw rod seat 9-4 is in threaded connection with one end of a screw rod 9-5, one end of the screw rod 9-5 is provided with a left-handed thread, and the other end of the screw rod 9-5 is provided with a right-handed thread; the other end of the screw rod 9-5 is in threaded connection with an upper screw rod seat 9-6, the upper screw rod seat 9-6 is in threaded connection with a spherical joint 9-7, and a ball rod of the spherical joint 9-7 is connected with a wheel support adapter 9-8; the wheel carrier adapter 9-8 is bolted to the wheel carrier 5-1 of the suspension assembly 5 under test (see fig. 9).
The constant-temperature test box 10 comprises a test box unit 10-1 and a test box middle box body 10-2; the middle box body 10-2 of the test box is arranged on the suspension mounting base 2, the test box unit 10-1 is arranged on two sides of the middle box body 10-2 of the test box, after the test box unit 10-1 and the middle box body 10-2 of the test box are fixed, the tested suspension assembly 5 is arranged in the test box unit 10-1, and the suspension connecting assembly 9 penetrates through a lower plate hole of the test box unit 10-1;
the control system 12 comprises a PC 12-1, a servo driver 12-2 and a data acquisition module 12-3; the servo valve of the hydraulic servo actuator 6 is connected with the servo driver 12-2 through a communication cable, the displacement sensor, the tension pressure sensor and the torque sensor of the hydraulic servo actuator 6 are connected with the data acquisition module 12-3 through communication cables, and the PC, the servo driver and the data acquisition module are connected through communication cables (see figure 10).
Furthermore, the triangular support 8-2 comprises two triangular plates 8-2-1 which are symmetrically arranged, the two triangular plates are connected through a connecting plate 8-2-2, and a plurality of mounting holes 8-2-3 are processed at the position of the horizontal connecting part of the two triangular plates; the suspension connecting component connecting shaft 8-3 is arranged in any one group of mounting holes on two sides so as to adapt to the simultaneous installation of two groups of suspensions with different vertical strokes; and the rod end connecting shaft 8-6 of the hydraulic servo actuator is arranged between the two triangular plates and is close to the vertex position of the lower end of the triangular plate.
Example 2
A use method of a four-station automobile suspension durability test device comprises the following steps:
step S1, selecting the tested suspension assembly 5 to be tested, and installing the tested suspension assembly 5 on two sides of the suspension installation assembly 4 according to the hard point coordinates of the tested suspension assembly 5 in the loading state;
step S2, connecting the tested suspension assembly 5 with the suspension connecting assembly 9, and then adjusting the mounting positions of the two suspension connecting assemblies 9 on the same side on the transmission assembly 8 and the length of the suspension connecting assemblies 9 according to the vertical stroke of the tested suspension assembly 5;
step S3, the control system 12 controls the hydraulic pump station 11 to be started, controls the hydraulic servo actuator 6 to actuate, and if the tested suspension assembly 5 is a front suspension during testing, controls the steering driving assembly 3 to actuate at the same time, and the tension pressure sensor 9-3 and the torque sensor 3-5 collect data and send the collected data to the control system; when the test device is loaded with vertical displacement/force, sine waves, sine superposition waves and road vertical random waves can be adopted for loading.
Claims (10)
1. A four-station automobile suspension durability test device is characterized by comprising a cast iron platform, a suspension mounting base, a suspension mounting assembly, a hydraulic servo actuator, an actuator mounting tailstock, a transmission assembly and a suspension connecting assembly; the cast iron platform is provided with two suspension mounting bases, and each suspension mounting base is provided with a suspension mounting assembly; the two suspension mounting assemblies have the same or different structures, and both sides of each suspension mounting assembly are used for mounting a tested suspension assembly; the tail end of the hydraulic servo actuator is hinged with the actuator mounting tailstock, and the rod end of the hydraulic servo actuator is hinged with the transmission assembly; the actuator installation tailstock and the transmission assembly are both installed on the cast iron platform; the one end of suspension coupling assembling with by the suspension subassembly connection, the other end is connected with transmission assembly, and hydraulic servo actuator drives, carries out vertical actuation to two sets of by the suspension subassemblies of being tested with one side simultaneously through transmission assembly, suspension coupling assembling.
2. The four-station automobile suspension durability test device according to claim 1, characterized by further comprising a steering driving assembly, a constant temperature test box, a hydraulic pump station and a control system; the steering driving assembly is selectively arranged on the suspension mounting base and positioned on the outer side of the suspension mounting assembly, and the steering driving assembly is used for driving a steering machine of the tested suspension assembly to steer; the constant temperature test box is arranged on the suspension mounting base, and the suspension mounting assembly and the tested suspension assembly are arranged in the constant temperature test box; the hydraulic pump station is connected with the hydraulic servo actuator through a hydraulic pipeline; the control system is used for controlling the opening/closing of the hydraulic pump station and controlling the actuating frequency and amplitude of the hydraulic servo actuator; and meanwhile, acquiring the displacement value of the hydraulic servo actuator and the value of a tension pressure sensor of the suspension connecting assembly.
3. The four-station automotive suspension durability test apparatus according to claim 1 or 2, wherein the cast iron platform comprises two pieces of an operation platform, an equipment installation platform; the two operating platforms are arranged on two sides of the equipment mounting platform and are horizontally connected with the equipment mounting platform; the device mounting platform is transversely provided with a plurality of sliding grooves at positions opposite to the transmission assembly and the actuator mounting tailstock, and the device mounting platform is longitudinally provided with a plurality of sliding grooves at positions opposite to the suspension mounting base.
4. The four-station automobile suspension durability test device according to claim 2, wherein the steering driving assembly comprises a mounting seat, a servo motor, a speed reducer mounting seat, a torque sensor, a coupling and a connecting rod; the mounting seat is arranged on the outer side of the front suspension base, the speed reducer mounting seat is arranged on the mounting seat, the servo motor is fixedly connected with the speed reducer mounting seat after being connected with the speed reducer, the speed reducer is connected with one end of the torque sensor through a coupler, and the other end of the torque sensor is connected with the connecting rod through a coupler; the connecting rod is connected with a steering engine of the tested suspension assembly.
5. The four-station automobile suspension durability test device according to claim 1 or 2, wherein the suspension mounting assembly comprises a mounting seat, and shock absorber upper point mounting brackets and suspension guide element mounting frames which are arranged on two sides of the mounting seat; the shock absorber upper point mounting bracket and the suspension guide element mounting frame are mounted on two sides of the mounting seat according to hard point coordinates of the tested suspension assembly in a loading state; when the tested suspension assembly mounted on the suspension mounting assembly is a front suspension, the suspension mounting assembly further comprises a steering gear mounting support.
6. The four-station automotive suspension durability test device according to claim 1 or 2, wherein the transmission assembly comprises a tripod base, a tripod, a suspension connecting assembly connecting shaft, a bearing assembly, a tripod rotating shaft and a hydraulic servo actuator rod end connecting shaft; the tripod is arranged in the tripod base, the tripod faces the middle position of the horizontal connecting part of the tested suspension assembly and is fixedly connected with the tripod rotating shaft, and the suspension connecting assembly connecting shafts are arranged at two ends of the horizontal connecting part of the tripod and are used for being connected with the suspension connecting assembly; the bearing assembly is arranged on the tripod base, and two ends of the tripod rotating shaft are connected with the bearing assembly; the rod end connecting shaft of the hydraulic servo actuator is arranged at the vertex of the lower end of the tripod and is positioned below the rotating shaft of the tripod;
the triangular support comprises two triangular plates which are symmetrically arranged, the two triangular plates are connected through a connecting plate, and a plurality of mounting holes are formed in the horizontal connecting part of the two triangular plates; the suspension connecting assembly connecting shaft is arranged in any group of mounting holes on two sides; and the rod end connecting shaft of the hydraulic servo actuator is arranged between the two triangular plates and is close to the vertex position of the lower end of the triangular plate.
7. The four-station automotive suspension durability test device according to claim 1 or 2, wherein the suspension connecting assembly comprises a knuckle bearing, a sensor mounting seat, a tension and pressure sensor, a lower screw rod seat, a screw rod, an upper screw rod seat, a spherical joint and a wheel bracket adapter; the bearing end of the knuckle bearing is connected with a suspension connecting assembly connecting shaft of the transmission assembly, the other end of the knuckle bearing is fixedly connected with a sensor mounting seat, the sensor mounting seat is fixedly connected with a tension pressure sensor, the tension pressure sensor is fixedly connected with a lower screw rod seat, the lower screw rod seat is in threaded connection with one end of a screw rod, a left-handed thread is machined at one end of the screw rod, and a right-handed thread is machined at the other end of the screw rod; the other end of the screw rod is in threaded connection with an upper screw rod seat, the upper screw rod seat is in threaded connection with a spherical joint, and a ball rod of the spherical joint is connected with a wheel support adapter; the wheel carrier adapter is bolted to the wheel carrier of the suspension assembly under test.
8. The four-station automobile suspension durability test device according to claim 2, wherein the constant temperature test chamber comprises a test chamber unit, a test chamber middle box body; the middle box body of the test box is arranged on the suspension mounting base, the test box unit is arranged on two sides of the middle box body of the test box, the test box unit is arranged in the test box unit by the tested suspension assembly after being fixed with the middle box body of the test box, and the suspension connecting assembly penetrates through a lower plate hole of the test box unit.
9. The four-station automotive suspension durability test device of claim 2, wherein the control system comprises a PC, a servo driver and a data acquisition module; the hydraulic servo actuator is characterized in that a servo valve of the hydraulic servo actuator is connected with a servo driver through a communication cable, a displacement sensor, a tension pressure sensor and a torque sensor of the hydraulic servo actuator are connected with a data acquisition module through the communication cable, and a PC (personal computer), the servo driver and the data acquisition module are connected through the communication cable.
10. The method of using the four-station automotive suspension durability test apparatus of claim 1, characterized in that the method comprises the steps of:
s1, selecting a tested suspension assembly to be tested, and installing the tested suspension assembly on two sides of a suspension installation assembly according to the hard point coordinates of the tested suspension assembly in the loading state;
step S2, connecting the tested suspension assembly with the suspension connecting assembly, and then adjusting the mounting positions of the two suspension connecting assemblies on the same side on the transmission assembly and the length of the suspension connecting assemblies according to the vertical stroke of the tested suspension assembly;
step S3, the hydraulic pump station is controlled to be started through the control system, the hydraulic servo actuator is controlled to actuate, if the tested suspension component is a front suspension during testing, the steering driving component is controlled to actuate at the same time, the tension pressure sensor and the torque sensor collect data, and the collected data are sent to the control system; when the test device is loaded with vertical displacement/force, sine waves, sine superposition waves and road vertical random waves can be adopted for loading.
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| CN202111191578.6A CN113758731A (en) | 2021-10-13 | 2021-10-13 | Quadruplex position automotive suspension durability test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115372027A (en) * | 2022-10-25 | 2022-11-22 | 北京理工大学前沿技术研究院 | Automobile electronic control suspension test system and method and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115372027A (en) * | 2022-10-25 | 2022-11-22 | 北京理工大学前沿技术研究院 | Automobile electronic control suspension test system and method and storage medium |
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