Power assembly suspension system test device, test method and test system

Abstract

The invention discloses a power assembly suspension system test device, a test method and a test system. The power assembly suspension system test device comprises a portal frame, an actuator, two fixing assemblies and a loading clamp, each fixing assembly comprises a tailstock and a fixing plate, the fixing plate is provided with a first suspension connecting part and a first support connecting part, the first suspension connecting parts are used for being connected with a power assembly left suspension and a power assembly right suspension of a vehicle respectively, and the first support connecting part is used for being connected with a second support connecting part. The two first support connecting parts are used for being connected with the left end and the right end of a power assembly rear support of the vehicle respectively, the loading clamp comprises a mounting block, a second suspension connecting part and two second support connecting parts, and the second suspension connecting part is used for being connected with a power assembly rear suspension of the vehicle; and the two second bracket connecting parts are respectively used for connecting a power assembly left bracket and a power assembly right bracket of the vehicle. According to the invention, loading examination can be carried out on the whole power assembly suspension system, the period of a bench test can be greatly shortened, and a damaged chain of the power assembly suspension system can be found.

Description

Technical Field

[0001] The invention relates to the technical field of vehicles, and in particular to a powertrain suspension system test device, a test method and a test system. Background Art

[0002] The powertrain suspension system includes the powertrain suspension and the powertrain bracket, which are important supporting and vibration isolation components of the automobile. At present, the powertrain suspension and the powertrain bracket are tested on the bench separately, and all the components in the system are verified separately, resulting in a long test cycle, inability to find the damage chain in the system, inability to perform lean design, and increased component costs. In addition, the separate verification of components requires simplified decomposition of the test load, which makes the stress state not completely consistent with the actual vehicle, and there is a certain deviation. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a powertrain suspension system test device, a test method and a test system.

[0004] The solution of the present invention to solve its technical problem is: In a first aspect, a powertrain suspension system test device is used for bench testing of a vehicle powertrain suspension system, comprising: Gantry; An actuator is hinged to the gantry, the output shaft of the actuator is extended in the up-down direction, and the lower end of the output shaft is the output end; Two fixing assemblies, the two fixing assemblies are respectively arranged on the left and right sides of the actuator, each fixing assembly includes a tailstock and a fixing plate, the tailstock is extended in the up-down direction, the fixing plate is connected to the tailstock, the fixing plate is provided with a first suspension connection part and a first bracket connection part, the first suspension connection part is arranged on the front wall surface of the tailstock, the first bracket connection part extends out of the tailstock in the direction of the actuator, the two first suspension connection parts are respectively used to connect the left suspension of the powertrain of the vehicle and the right suspension of the powertrain, and the two first bracket connection parts are respectively used to connect the left and right ends of the rear bracket of the powertrain of the vehicle; The loading fixture includes a mounting block, a second suspension connection part and two second bracket connection parts, wherein the mounting block is hinged to the output end, the second suspension connection part is connected to the mounting block and is arranged toward the rear, the two second bracket connection parts are respectively connected to the left and right sides of the second suspension connection part, and are respectively arranged tilted forward toward the two fixed components, the second suspension connection part is used to connect the rear suspension of the powertrain of the vehicle, and the two second bracket connection parts are respectively used to connect the left bracket and the right bracket of the powertrain of the vehicle.

[0005] The present invention has at least the following beneficial effects: the fixing assembly and the loading fixture provide installation space for various components of the powertrain suspension system, wherein the powertrain left suspension and the powertrain right suspension of the powertrain suspension system are installed on the first suspension connection part of the fixing plate, the powertrain rear bracket is installed on the first bracket connection part of the fixing plate, the powertrain left bracket and the powertrain right bracket are installed on the second bracket connection part of the loading fixture, the powertrain rear suspension is installed on the second suspension connection part of the loading fixture, the powertrain left suspension is connected to the powertrain left bracket according to the actual vehicle state, the powertrain right suspension is connected to the powertrain right bracket according to the actual vehicle state, and the powertrain rear suspension is connected to the powertrain rear bracket according to the actual vehicle state, so that the entire powertrain suspension system can be installed on the powertrain suspension system test device according to the actual vehicle state to simulate the actual vehicle installation.

[0006] Since the entire powertrain suspension system is installed on the powertrain suspension system test device according to the actual vehicle state, the load is applied to the powertrain suspension system through the actuator and the loading fixture to realize the bench test of the entire powertrain suspension system, without the need to perform bench tests on the powertrain suspension and the powertrain bracket separately, which greatly shortens the bench test cycle. Moreover, the damage chain in the powertrain suspension system can be found, which is convenient for subsequent design optimization. In addition, since the overall verification of the powertrain suspension system does not require simplified decomposition of the test load, its stress state during the test is consistent with the actual vehicle, which can greatly reduce the error of the bench test and improve the accuracy of the test.

[0007] As a further improvement of the above technical solution, the tailstock is provided with a mounting groove, which extends in the up and down directions. The fixed plate is connected to the tailstock through the mounting groove and can move along the mounting groove to adjust the position of the fixed plate relative to the tailstock.

[0008] Such an arrangement can adjust the installation height of the powertrain suspension system on the powertrain suspension system test device, and can ensure that the force application point of the actuator is located at the center of mass of the powertrain suspension system, thereby improving the accuracy of the test.

[0009] As a further improvement of the above technical solution, the powertrain suspension system test device further includes: A base plate, wherein a plurality of connecting rails are arranged on the upper surface of the base plate, the plurality of connecting rails are arranged parallel to each other, and the lower ends of the tailstock and the gantry are respectively detachably connected to at least one of the connecting rails.

[0010] Providing a base plate can facilitate installation of the entire powertrain suspension system test device on the test bench, and since a connecting rail is provided on the base plate, the installation position of the gantry on the horizontal plane can be adjusted. By installing the gantry at a suitable position, the approximate test position of the powertrain suspension system can be determined, which is more conducive to bench testing.

[0011] As a further improvement of the above technical solution, the gantry includes a vertical bracket, a transverse bracket and a movable block, the vertical bracket is extended in the up and down direction, the transverse bracket is extended in the left and right direction, the left and right ends of the transverse bracket are respectively connected to the vertical bracket, the transverse bracket is provided with an adjustment track extending in the left and right direction, the movable block is movably installed on the adjustment track and is hinged with the actuator to adjust the position of the actuator relative to the transverse bracket in the left and right direction.

[0012] With such an arrangement, the left-right position adjustment of the actuator relative to the gantry can be achieved by adjusting the position of the movable block on the transverse bracket, thereby ensuring that the loading position of the actuator on the powertrain suspension system is the center of mass position of the powertrain suspension system, so as to improve the accuracy of the test and be suitable for bench testing of powertrain suspension systems of different vehicle models.

[0013] As a further improvement of the above technical solution, the transverse bracket is movably connected to the vertical bracket to adjust the position of the transverse bracket relative to the vertical bracket in the up and down directions.

[0014] By adjusting the height position of the transverse bracket, the height position adjustment of the actuator can be achieved, which is more conducive to the actual installation of the actuator and can ensure that the position where the actuator loads the powertrain suspension system is the center of mass position of the powertrain suspension system, so as to ensure the accuracy of the test.

[0015] In a second aspect, an embodiment of the present invention provides a powertrain suspension system test method, using the powertrain suspension system test device as described in any one of the first aspects, and the powertrain suspension system test method includes: Selecting an actuator, and hinge the actuator to the gantry; Adjusting the position of the actuator, and connecting the powertrain suspension system to the powertrain suspension system test device through standard parts; The powertrain suspension system test device is started to perform a bench test.

[0016] Since the powertrain suspension system test device is used to conduct bench tests on the powertrain suspension system, load can be applied to the entire powertrain suspension system, and the connection and installation method of the powertrain suspension system is consistent with the actual vehicle. Compared with bench tests of each component separately, it not only greatly reduces the test time and reduces the test cost, but also can accurately find out the damage chain in the powertrain suspension system and lock the weak points of the powertrain suspension system, providing a test basis for subsequent enhanced design plans, and can also verify the slippage between components during the test.

[0017] As a further improvement of the above technical solution, the powertrain suspension system includes a powertrain left suspension, a powertrain right suspension, a powertrain left bracket, a powertrain right bracket, a powertrain rear suspension and a powertrain rear bracket, and the position of the actuator is adjusted to connect the powertrain suspension system to the powertrain suspension system test device through standard parts, including: The powertrain left suspension and the powertrain right suspension are respectively connected to the two first suspension connection parts through the standard parts, and the left and right ends of the powertrain rear bracket are respectively connected to the two first bracket connection parts through the standard parts; adjusting the position of the actuator; The powertrain left bracket and the powertrain right bracket are respectively connected to the second bracket connection portion through the standard parts, and the powertrain rear suspension is connected to the second suspension connection portion through the standard parts.

[0018] Through the above steps, the entire powertrain suspension system is installed on the powertrain suspension system test device according to the connection method of the actual vehicle, the state of the actual vehicle is simulated, and the position of the actuator is adjusted to ensure the initial position required by the test. The actuator is loaded to the center of mass position of the powertrain suspension system, which can accurately verify the strength and fatigue life of the entire powertrain suspension system.

[0019] As a further improvement of the above technical solution, starting the powertrain suspension system test device to perform a bench test includes: Setting displacement and load protection on the powertrain suspension system test device, adjusting proportional-integral-derivative control parameters, and writing a test program; Starting the powertrain suspension system test device; When encountering an emergency, the powertrain suspension system test device is controlled to stop urgently. The emergency includes but is not limited to fire, personal injury, and component breakage of the powertrain suspension system test device.

[0020] Through the above steps, the test process can be protected, accidents can be avoided, and the safety of the test can be improved.

[0021] As a further improvement of the above technical solution, the starting of the powertrain suspension system test device to perform a bench test further includes: Re-testing the torque values ​​of all connection points between the powertrain suspension system and the powertrain suspension system test device, observing the state of the standard parts at each connection position, and obtaining test data; The test data were recorded and analyzed.

[0022] Through the above steps, the test data can be analyzed to determine whether each component in the powertrain suspension system has slippage, cracking, etc.

[0023] In a third aspect, an embodiment of the present invention proposes a powertrain suspension system test system, comprising a control module and a powertrain suspension system test device as described in any one of the first aspects, wherein the control module is used to control the operation of an actuator and a loading fixture of the powertrain suspension system test device to complete a bench test of the tested powertrain suspension system.

[0024] Since the powertrain suspension system is installed on the powertrain suspension system test device according to the connection method of the actual vehicle during the test, the powertrain suspension system test device is controlled by the control module to perform bench tests, so that the strength and fatigue life of the entire powertrain suspension system can be examined. This not only greatly reduces the test time and reduces the test cost, but also can accurately find out the damage chain in the powertrain suspension system, lock the weak points of the powertrain suspension system, provide a test basis for the subsequent strengthening design plan, and verify the slippage between components during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the powertrain suspension system; Figure 2 is a schematic diagram of the overall structure of a powertrain suspension system test device according to an embodiment of the present invention; Figure 3 is a schematic diagram of the installation of an actuator of a powertrain suspension system test device according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a loading fixture of a powertrain suspension system test device according to an embodiment of the present invention; Figure 5 is a schematic structural diagram of a fixing assembly of a powertrain suspension system test device according to an embodiment of the present invention; Figure 6 is a schematic diagram of the use of a powertrain suspension system test device according to an embodiment of the present invention; Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of part A; Figure 8 is a flow chart of a powertrain suspension system test method according to an embodiment of the present invention; Fig. 9 yes Figure 8 A detailed flow chart of step S200; Fig.10 yes Figure 8 Detailed flowchart of step S300 in FIG.

[0027] Figure numerals: 600, powertrain suspension system; 610, powertrain rear bracket; 620, powertrain rear suspension; 630, powertrain left suspension; 640, powertrain left bracket; 650, powertrain right suspension; 660, powertrain right bracket; 700, powertrain suspension system test device; 710, gantry; 711, vertical bracket; 712, transverse bracket; 713, movable block; 714, adjustment track; 715, mounting hole; 720, actuator; 730, fixing assembly; 731, tailstock; 732, fixing plate; 733, first suspension connection; 734, first bracket connection; 735, mounting groove; 740, loading fixture; 741, mounting block; 742, second suspension connection; 743, second bracket connection; 750, bottom plate; 751, connecting track. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0033] Reference Figures 2 to 7 In the first aspect, an embodiment of the present invention proposes a powertrain suspension system test device 700, which is applied to a vehicle and is used to perform a bench test on the powertrain suspension system 600 of the vehicle and to perform a loading assessment on the entire powertrain suspension system 600. This can not only greatly shorten the bench test cycle, but also find the damage chain in the powertrain suspension system 600, which is convenient for subsequent design optimization.

[0034] Reference Figure 2 In this embodiment, the powertrain suspension system test device 700 includes a gantry 710, an actuator 720, a fixing assembly 730 and a loading fixture 740, wherein two fixing assemblies 730 are provided. The actuator 720 is mounted on the gantry 710 and is hinged to the gantry 710. The output shaft of the actuator 720 is extended in the up-down direction, and the lower end of the output shaft is the output end of the actuator 720. The loading fixture 740 is installed at the output end of the actuator 720. The two fixing assemblies 730 are respectively arranged on the left and right sides of the actuator 720.

[0035] Reference Figure 5In this embodiment, each fixing assembly 730 includes a tailstock 731 and a fixing plate 732, and the tailstock 731 is extended in the up-down direction. The fixing plate 732 is connected to the tailstock 731, and the fixing plate 732 is provided with a first suspension connection portion 733 and a first bracket connection portion 734. Among them, the first suspension connection portion 733 is arranged on the front wall surface of the tailstock 731, and is arranged along the arrangement direction of the front wall surface of the tailstock 731. The first bracket connection portion 734 projects the tailstock 731 in the direction of the actuator 720 and is arranged toward the rear. Specifically, the first bracket connection portion 734 of the fixing assembly 730 located on the left side of the actuator 720 extends rightward from the tailstock 731, and the first bracket connection portion 734 of the fixing assembly 730 located on the right side of the actuator 720 extends leftward from the tailstock 731.

[0036] In this embodiment, the front wall of the tail stock 731 forms an angle with the front-to-back direction. The front wall of the tail stock 731 on the left side of the actuator 720 is set toward the right front, and the front wall of the tail stock 731 on the right side of the actuator 720 is set toward the left front.

[0037] Reference Figure 1 The powertrain suspension system 600 of the vehicle includes a powertrain suspension and a powertrain bracket, wherein the powertrain suspension includes a powertrain left suspension 630, a powertrain right suspension 650 and a powertrain rear suspension 620, and the powertrain bracket includes a powertrain left bracket 640, a powertrain right bracket 660 and a powertrain rear bracket 610.

[0038] The first suspension connection portion 733 located on the left side of the actuator 720 is used to connect to the left suspension 630 of the vehicle's powertrain, the second suspension connection portion 742 located on the right side of the actuator 720 is used to connect to the right suspension 650 of the vehicle's powertrain, the first bracket connection portion 734 located on the left side of the actuator 720 is used to connect to the left end of the rear bracket 610 of the vehicle's powertrain, and the first bracket connection portion 734 located on the right side of the actuator 720 is used to connect to the right end of the rear bracket 610 of the vehicle's powertrain.

[0039] Reference Figure 4In this embodiment, the loading fixture 740 includes a mounting block 741, a second suspension connection portion 742, and a second bracket connection portion 743, wherein two second bracket connection portions 743 are provided. The second suspension connection portion 742 is connected to the rear side of the mounting block 741 and is arranged toward the rear, and the two second bracket connection portions 743 are respectively connected to the left and right sides of the second suspension connection portion 742, and the second bracket connection portion 743 located on the left side of the second suspension connection portion 742 is arranged obliquely forward toward the fixing assembly 730 located on the left side, and the second bracket connection portion 743 located on the right side of the second suspension connection portion 742 is arranged obliquely forward toward the fixing assembly 730 located on the right side. The second suspension connection portion 742 is used to connect to the rear suspension 620 of the vehicle's powertrain. The connection surfaces of the two second bracket connection portions 743 are facing the side wall surfaces of the fixing assembly 730. The second bracket connection portion 743 located on the left side of the second suspension connection portion 742 is used to connect to the left bracket 640 of the vehicle's powertrain. The second bracket connection portion 743 located on the right side of the second suspension connection portion 742 is used to connect to the right bracket 660 of the vehicle's powertrain.

[0040] The mounting block 741 is connected to the output end of the actuator 720. Under the driving action of the actuator 720, the loading fixture 740 can apply a load to the center of mass position of the powertrain system to which it is connected, and can control the speed, direction, displacement, force and other parameters of the applied load to complete the bench test.

[0041] Reference Figure 6 and Figure 7 In this embodiment, the powertrain suspension system 600 is assembled according to the assembly state of the actual vehicle, the entire powertrain suspension system 600 is installed on the powertrain suspension system test device 700 through the fixing assembly 730 and the loading fixture 740, and the load is applied at the center of mass of the actual vehicle powertrain suspension system 600. Since all parts of the powertrain suspension system 600 are tested at the same time, the test cycle can be greatly shortened, and the damage chain in the powertrain suspension system 600 can be found. By strengthening the weak parts, the strength and fatigue life of the entire powertrain suspension system 600 can be improved. The test load is directly obtained, which is consistent with the stress state of the actual vehicle, and the test is more accurate.

[0042] Reference Figure 5 In this embodiment, the tail stock 731 is provided with a mounting groove 735, and the mounting groove 735 is extended in the up-down direction. The fixing plate 732 is connected to the tail stock 731 through the mounting groove 735. The fixing plate 732 can adjust the relative position of the fixing plate 732 and the tail stock 731 in the up-down direction along the extension direction of the mounting groove 735, so as to adjust the height of the powertrain suspension system 600 and ensure that the force application point of the actuator 720 is located at the center of mass of the powertrain suspension system 600.

[0043] In this embodiment, the tailstock 731 and the fixing plate 732 are stably connected by the combination of bolts and T-nuts. The shape of the mounting groove 735 matches the shape of the T-nut. During installation, the bolt is passed through the fixing plate 732, and the T-nut is set at the tail end of the bolt. The T-nut is placed in the mounting groove 735, and the position in the up and down direction is adjusted. Then, the bolt is tightened. Through the clamping effect of the bolt head and the T-nut, the position between the tailstock 731 and the fixing plate 732 can be fixed. The operation is simple and convenient.

[0044] In this embodiment, eight bolts are provided on each fixing assembly 730 for connecting the tailstock 731 and the fixing plate 732, which can ensure the connection strength between the tailstock 731 and the fixing plate 732 and avoid the unstable connection between the tailstock 731 and the fixing plate 732 affecting the test results.

[0045] In other embodiments, the tail stock 731 and the fixed plate 732 are movably connected via a screw nut, a screw extending in the up-down direction is arranged in the mounting groove 735, a nut is arranged on the rear wall of the fixed plate 732, the nut is sleeved on the screw, the outer wall of the nut cooperates with the mounting groove 735, the mounting groove 735 limits the rotation of the nut, and the screw can be rotated to allow the nut to move in the up-down direction, thereby realizing the position adjustment of the fixed plate 732 relative to the tail stock 731 in the up-down direction.

[0046] Reference Figure 3 In this embodiment, the powertrain suspension system test device 700 further includes a bottom plate 750, which is used to mount the powertrain suspension system test device 700 as a whole on the test bench. A plurality of connecting rails 751 are provided on the upper surface of the bottom plate 750, and the lower ends of the fixing assembly 730 and the gantry 710 are respectively connected to one or more of the connecting rails 751. The connecting rails 751 are arranged parallel to each other, and the connection between the lower ends of the fixing assembly 730 and the gantry 710 and the connecting rails 751 is detachable. The fixing assembly 730 and the gantry 710 can adjust their relative positions with the bottom plate 750 along the extension direction of the connecting rails 751, so as to ensure that the force application point of the actuator 720 is located at the center of mass of the powertrain suspension system 600.

[0047] In this embodiment, the connecting rails 751 on the base plate 750 extend along the front-to-back direction, and a plurality of connecting rails 751 are arranged along the left-to-right direction. The fixing assembly 730 and the gantry 710 can adjust their positions along the front-to-back direction, and can also adjust the positions of the fixing assembly 730 and the gantry 710 along the left-to-right direction by selecting different connecting rails 751.

[0048] In this embodiment, the base plate 750 and the fixing assembly 730 or the gantry 710 are stably connected by the combination of bolts and T-nuts. The shape of the connecting track 751 matches the shape of the T-nut. During installation, the bolt is inserted into the bottom surface of the tailstock 731 or the bottom surface of the gantry 710, and the T-nut is set at the tail end of the bolt. The T-nut is placed in the connecting track 751, and the position in the front-back direction is adjusted, and then the bolt is tightened. Through the clamping effect of the bolt head and the T-nut, the position between the base plate 750 and the fixing assembly 730 or the gantry 710 can be fixed, and the operation is simple and convenient.

[0049] Reference Figure 3 In this embodiment, the gantry 710 includes a vertical bracket 711, a horizontal bracket 712 and a movable block 713. The vertical bracket 711 is provided with two, and the vertical bracket 711 is extended in the up-down direction. The horizontal bracket 712 is extended in the left-right direction. The left end and the right end of the horizontal bracket 712 are respectively connected to the upper ends of the two vertical brackets 711. The horizontal bracket 712 is provided with an adjustment rail 714, and the adjustment rail 714 is extended in the left-right direction. The movable block 713 is installed on the adjustment rail 714, and can realize the left-right position adjustment along the adjustment rail 714. The actuator 720 is hinged to the lower wall surface of the movable block 713. By adjusting the position of the movable block 713 on the horizontal bracket 712, the left-right position adjustment of the actuator 720 relative to the gantry 710 can be realized.

[0050] In this embodiment, the actuator 720 and the transverse bracket 712 are stably connected by the combination of bolts and T-nuts. The shape of the adjustment track 714 matches the shape of the T-nut. During installation, the bolt is inserted into the movable block 713, and the T-nut is set at the tail end of the bolt. The T-nut is placed in the adjustment track 714, and the left and right position of the actuator 720 on the gantry 710 is adjusted. Then the bolt is tightened. The position between the actuator 720 and the gantry 710 can be fixed by clamping the bolt head and the T-nut. The operation is simple and convenient.

[0051] In some embodiments, the transverse bracket 712 is movably connected to the vertical bracket 711 , and the position of the transverse bracket 712 relative to the vertical bracket 711 in the up and down directions can be adjusted.

[0052] In this embodiment, a plurality of mounting holes 715 are provided on the vertical bracket 711, and the mounting holes 715 are provided in a plurality of rows, and each row of mounting holes 715 has a plurality of mounting holes 715, and the mounting holes 715 in the same row are on the same horizontal plane, and the plurality of rows of mounting holes 715 are arranged on the vertical bracket 711 in the up-down direction, and the horizontal bracket 712 can be installed at a height selected on the vertical bracket 711 according to actual conditions, and locked by screws, and the screws are inserted into the mounting holes 715 of suitable height, so as to realize the stable installation of the horizontal bracket 712. When the height of the horizontal bracket 712 needs to be adjusted, the screws are removed, and the height position of the horizontal bracket 712 is moved, and after the required height position is determined, the screws are used again to lock the horizontal bracket 712 with the vertical bracket 711.

[0053] It can be understood that by adjusting the height position of the transverse bracket 712, the height position adjustment of the actuator 720 can be achieved, which is more conducive to the actual installation of the actuator 720 and can ensure that the position where the actuator 720 loads the powertrain suspension system 600 is the center of mass position of the powertrain suspension system 600, so as to ensure the accuracy of the test.

[0054] In a second aspect, an embodiment of the present invention further provides a powertrain suspension system test method, which is applied to the powertrain suspension system test device 700 provided in any one of the embodiments of the first aspect above. The powertrain suspension system test method includes steps S100, S200, and S300. Figure 8 .

[0055] Step S100 , selecting the actuator 720 , and hinge the actuator 720 to the gantry 710 .

[0056] An actuator 720 with a suitable range and precision is selected according to the test conditions, including but not limited to the test load and the test frequency. The actuator 720 can implement active vibration control and apply a control force to the control object according to a determined control law. The actuator 720 can be a fluid actuator, a gas actuator, etc. In this embodiment, the actuator 720 is a hydraulic actuator, and its control object is the powertrain suspension system 600.

[0057] Step S200 , adjusting the position of the actuator 720 , connecting the powertrain suspension system 600 to the powertrain suspension system test device 700 through standard components.

[0058] Adjusting the position of the actuator 720 can ensure that the force application position of the actuator 720 is at the center of mass of the powertrain suspension system 600, and that the installation state of the powertrain suspension system 600 on the powertrain suspension system test device 700 is consistent with that of the actual vehicle, thereby ensuring the accuracy of subsequent tests.

[0059] It is understandable that the standard parts are standardized fasteners used to install powertrain suspension and powertrain brackets in real vehicles, such as standard screws, etc. Since the entire powertrain suspension system 600 is installed in the powertrain suspension system test device 700 through standard parts, the entire powertrain suspension system 600 can be loaded and tested during subsequent tests, which can not only greatly shorten the bench test cycle, but also find the damage chain in the powertrain suspension system 600, which is convenient for subsequent design optimization.

[0060] Step S300 , starting the powertrain suspension system test device 700 to perform a bench test.

[0061] After the actuator 720 is started, the loading fixture 740 of the powertrain mounting system 600 can apply a load to the powertrain mounting system 600 , and the force application point is the center of mass position of the powertrain mounting system 600 .

[0062] In this embodiment, the bench test is performed on the entire powertrain suspension system 600. Compared with the bench test of each component separately, it not only greatly reduces the test time and test cost, but also can accurately find the damage chain in the powertrain suspension system 600, identify the weak points of the powertrain suspension system 600, and provide a test basis for the subsequent strengthening design plan. Since the status of all components in the powertrain suspension system 600 is consistent with the actual vehicle, the slippage between components during the test can also be verified.

[0063] It is understandable that the powertrain suspension system 600 includes a powertrain suspension and a powertrain bracket, which are important supporting and vibration isolating components of the automobile. The powertrain suspension includes a powertrain left suspension 630, a powertrain right suspension 650, and a powertrain rear suspension 620, and the powertrain bracket includes a powertrain left bracket 640, a powertrain right bracket 660, and a powertrain rear bracket 610.

[0064] In some embodiments, step S200 includes step S210, step S220, and step S230. Fig. 9 .

[0065] Step S210, the powertrain left suspension 630 and the powertrain right suspension 650 are respectively connected to the two first suspension connection parts 733 through standard parts, and the left and right ends of the powertrain rear bracket 610 are respectively connected to the two first bracket connection parts 734 through standard parts.

[0066] The powertrain mounting system 600 is mounted on two fixing components 730 of the powertrain mounting system testing device 700 through step S210 .

[0067] It is understandable that before performing step S210 , it is necessary to first determine the positions of the two fixing components 730 on the base plate 750 and the height position of the fixing plate 732 on the tailstock 731 .

[0068] Specifically, determine the left-right position of the fixing assembly 730 on the base plate 750, select a plurality of appropriate connecting rails 751, install the tail stocks 731 of the two fixing assemblies 730 on the connecting rails 751 of the base plate 750 using T-nuts and bolts, slide the fixing assembly 730 along the connecting rails 751 to a suitable position in the front-rear direction, and tighten the bolts and T-nuts to achieve a stable connection between the fixing assembly 730 and the base plate 750, and fix the position of the fixing assembly 730 on the horizontal plane.

[0069] After the position of the fixing assembly 730 on the horizontal plane is determined, the fixing plate 732 is installed on the tail stock 731 using T-nuts and bolts, and the T-nuts are placed in the mounting groove 735 of the tail stock 731. The fixing plate 732 is moved up and down along the mounting groove 735 until it moves to a position with a suitable height, and the bolts and T-nuts are locked to achieve a stable connection between the fixing plate 732 and the tail stock 731, and the position of the fixing plate 732 on the vertical plane is fixed.

[0070] Since the fixing plate 732 and the tailstock 731 are fixed by bolts and T-nuts, they are highly flexible and versatile and can be adapted to various vehicle models.

[0071] It is understandable that the horizontal distance between the two fixing assemblies 730 needs to be determined according to the width of the powertrain suspension system 600, so that the left and right ends of the powertrain rear bracket 610 can be connected to the first bracket connection part 734 of the connection plate. In addition, the fixing plates 732 of the two fixing assemblies 730 need to be adjusted to the same height, so as to facilitate the horizontal installation of the powertrain rear bracket 610 of the powertrain suspension system 600, ensure that the entire powertrain suspension system 600 is placed accurately, thereby ensuring that the force application position of the actuator 720 is at the center of mass of the powertrain suspension system 600, and improving the accuracy of the test.

[0072] After the powertrain left suspension 630 and the powertrain right suspension 650 are respectively installed on the first suspension connection parts 733 of the two fixing components 730 through standard parts, the powertrain left suspension 630 and the powertrain right suspension 650 have the same height.

[0073] Step S220, adjusting the position of the actuator 720. By adjusting the position of the actuator 720 on the gantry 710, the position where the actuator 720 applies a load to the powertrain suspension system 600 can be adjusted to the center of mass of the powertrain suspension system 600, so that the strength and fatigue life of the entire powertrain suspension system 600 can be accurately verified.

[0074] Before performing step S100, the gantry 710 needs to be installed at a suitable position on the bottom plate 750. Specifically, the left-right position of the gantry 710 on the bottom plate 750 is determined, a plurality of suitable connecting rails 751 are selected, two vertical brackets 711 of the gantry 710 are installed on the connecting rails 751 of the bottom plate 750 using T-nuts and bolts, the gantry 710 is slid along the connecting rails 751 to a suitable position in the front-back direction, the bolts and the T-nuts are locked, and the gantry 710 can be stably connected to the bottom plate 750, and the position of the gantry 710 on the horizontal plane is fixed.

[0075] Determine the height position of the actuator 720, install the transverse bracket 712 to the appropriate height position of the vertical bracket 711, and lock the screws used to fix the transverse bracket 712 and the vertical bracket 711 at the mounting holes 715 at the appropriate height position. The actuator 720 is hinged to the bottom of the movable block 713 through a hinge, so that the actuator 720 and the gantry 710 can be installed. Move the movable block 713 left and right along the adjustment track 714 of the transverse bracket 712, move the actuator 720 to the appropriate position, and then fix the movable block 713 to the transverse bracket 712 through bolts and T-nuts to fix the position of the actuator 720.

[0076] Step S230 , the powertrain left bracket 640 and the powertrain right bracket 660 are respectively connected to the second bracket connection portion 743 through standard parts, and the powertrain rear suspension 620 is connected to the second suspension connection portion 742 through standard parts.

[0077] It can be understood that the powertrain left bracket 640 and the powertrain left suspension 630 are connected through standard parts according to the connection method of the actual vehicle, the powertrain right bracket 660 and the powertrain right suspension 650 are connected through standard parts according to the connection method of the actual vehicle, and the powertrain rear suspension 620 and the powertrain rear bracket 610 are connected through standard parts according to the connection method of the actual vehicle.

[0078] The design of the loading fixture 740 refers to the fixed connection method of the actual vehicle, and tries to simulate the state of the actual vehicle. The loading fixture 740 must be guaranteed to have a sufficiently high strength. The loading fixture 740 is installed at the output end of the actuator 720. After the position of the actuator 720 is determined, the powertrain suspension system 600 is connected to the loading fixture 740 to achieve the connection between the powertrain suspension system 600 and the actuator 720, which can ensure the initial position required by the test. All connection points in the powertrain suspension system 600 are tightened according to the torque required by the actual vehicle using the actual vehicle standard parts. Since the loading fixture 740 and the fixing assembly 730 install the entire powertrain suspension system 600 on the gantry 710, and the various components of the powertrain suspension system 600 are set according to the actual vehicle, after the actuator 720 is started, the loading fixture 740 can apply load or displacement instructions to the powertrain suspension system 600 to verify the strength and fatigue life of the entire powertrain suspension system 600.

[0079] In some embodiments, step S300 includes step S310, step S320, and step S330. Fig.10 .

[0080] Step S310, setting displacement and load protection on the powertrain suspension system test device 700, adjusting the proportional-integral-differential (PID) control parameters, and writing a test program. The displacement and load protection on the powertrain suspension system test device 700 are set according to the actual operating experience of the operator.

[0081] Step S320 , start the powertrain suspension system test device 700 . After starting, the actuator 720 is started, and a load can be applied to the center of mass position of the powertrain suspension system 600 through the loading fixture 740 , so as to perform a loading test on the entire powertrain suspension system 600 .

[0082] Step S330, when encountering an emergency, control the powertrain suspension system test device 700 to stop urgently. It is understandable that the powertrain suspension system test device 700 is provided with an emergency stop button, which can control the powertrain suspension system test device 700 to stop urgently. During the bench test, the operator needs to always pay attention to the protection settings of the powertrain suspension system 600 and adjust the control parameters in time. In case of an emergency, the operator presses the emergency stop button to prevent accidents and improve the safety of the test.

[0083] It is understood that the emergency situation includes but is not limited to fire, personal injury, and component breakage of the powertrain suspension system test device 700. The component breakage of the powertrain suspension system test device 700 includes but is not limited to bolt breakage at each connection.

[0084] In some embodiments, after completing step S300, the powertrain suspension system test method further includes steps S400 and S500. Figure 8 .

[0085] Step S400: re-measure the torque values ​​of all connection points between the powertrain suspension system 600 and the powertrain suspension system test device 700, observe the state of the standard parts at each connection position, and obtain test data. Re-measure the torque values ​​of all connection points according to the actual vehicle requirements, observe whether the standard parts at each connection position have slippage, cracking, etc., and derive the test data.

[0086] Step S500, recording and analyzing test data.

[0087] It is understandable that after obtaining the test data, a test curve can be drawn based on the test data and a test report can be completed. The test curve can be used to analyze whether the entire powertrain suspension system 600 has slippage, cracking, etc., and examine the strength and fatigue life of the entire powertrain suspension system 600.

[0088] In the third aspect, an embodiment of the present invention further proposes a powertrain suspension system test system, which includes a control module and a powertrain suspension system test device 700 proposed in any one of the embodiments in the first aspect, wherein the control module is used to control the operation of the actuator 720 and the loading fixture 740 of the powertrain suspension system test device 700 to complete the bench test of the tested powertrain suspension system 600 and verify the strength and fatigue life of the entire powertrain suspension system 600.

[0089] The control module in this embodiment is a professional test software, which can compile different test programs according to the test requirements, and can perform PID control to ensure the test accuracy. In this embodiment, the test software also has a road spectrum iteration function, which can collect the road spectrum signal of the actual vehicle and obtain the load (strain, acceleration, force and other information) of the actual vehicle when driving on the road. After the powertrain suspension system test device 700 is installed on the test bench, the collected road spectrum signal is played through the test bench to fully simulate the test conditions of the actual vehicle, further improve the accuracy, and greatly reduce the test cost.

[0090] It is understandable that the vehicle proposed in this embodiment can be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle can also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle can be a gasoline vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0091] The embodiment of the present invention further provides a control module, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein the program is executed by the processor to implement the bench test of the above embodiment. The control module can also record and store test data, which is beneficial for subsequent analysis of the test data and provides a test basis for the optimization of the powertrain suspension system 600.

[0092] Take the example of a processor and a memory connected via a bus. The memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk memory, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the control processor, and these remote memories may be connected to the control module via a network.

[0093] The non-transient software program and instructions required to implement the bench test of the above embodiment are stored in the memory, and when executed by the processor, the bench test in the above embodiment is performed.

[0094] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0095] An embodiment of the present invention further provides a vehicle, including a powertrain suspension system 600. The powertrain suspension system 600 is bench tested by the powertrain suspension system test method of the above embodiment.

[0096] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions for executing the above-mentioned bench test.

[0097] It is worth noting that since the computer-readable storage medium of the embodiment of the present invention can execute the above-mentioned bench test and is applied to the above-mentioned powertrain suspension system test device 700, it can perform loading assessment on the entire powertrain suspension system 600, which can not only greatly shorten the bench test cycle, but also find the damage chain in the powertrain suspension system 600, which is convenient for subsequent design optimization.

[0098] In addition, one embodiment of the present invention also provides a computer program product, including a computer program or computer instructions, the computer program or computer instructions are stored in a computer-readable storage medium, the processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device performs the above-mentioned bench test.

[0099] It is worth noting that since the computer program product of the embodiment of the present invention can execute the above-mentioned bench test and is applied to the above-mentioned powertrain suspension system test device 700, it can perform loading assessment on the entire powertrain suspension system 600, which can not only greatly shorten the bench test cycle, but also find the damage chain in the powertrain suspension system 600, which is convenient for subsequent design optimization.

[0100] It will be appreciated by those skilled in the art that all or some of the steps and systems in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0101] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A powertrain suspension system test device, characterized in that: Bench test of powertrain suspension system applied to vehicles, including: Gantry; An actuator is hinged to the gantry, the output shaft of the actuator is extended in the up-down direction, and the lower end of the output shaft is the output end; Two fixing assemblies, the two fixing assemblies are respectively arranged on the left and right sides of the actuator, each fixing assembly includes a tailstock and a fixing plate, the tailstock is extended in the up-down direction, the fixing plate is connected to the tailstock, the fixing plate is provided with a first suspension connection part and a first bracket connection part, the first suspension connection part is arranged on the front wall surface of the tailstock, the first bracket connection part extends out of the tailstock in the direction of the actuator, the two first suspension connection parts are respectively used to connect the left suspension of the powertrain of the vehicle and the right suspension of the powertrain, and the two first bracket connection parts are respectively used to connect the left and right ends of the rear bracket of the powertrain of the vehicle; The loading fixture includes a mounting block, a second suspension connection part and two second bracket connection parts, wherein the mounting block is hinged to the output end, the second suspension connection part is connected to the mounting block and is arranged toward the rear, the two second bracket connection parts are respectively connected to the left and right sides of the second suspension connection part, and are respectively arranged tilted forward toward the two fixed components, the second suspension connection part is used to connect the rear suspension of the powertrain of the vehicle, and the two second bracket connection parts are respectively used to connect the left bracket and the right bracket of the powertrain of the vehicle.

2. The powertrain suspension system test device according to claim 1, characterized in that: The tailstock is provided with a mounting groove extending in the up-down direction. The fixing plate is connected to the tailstock through the mounting groove and can move along the mounting groove to adjust the position of the fixing plate relative to the tailstock.

3. The powertrain suspension system test device according to claim 1, characterized in that: The powertrain suspension system test device also includes: A base plate, wherein a plurality of connecting rails are arranged on the upper surface of the base plate, the plurality of connecting rails are arranged parallel to each other, and the lower ends of the tailstock and the gantry are respectively detachably connected to at least one of the connecting rails.

4. The powertrain suspension system test device according to claim 1, characterized in that: The gantry includes a vertical support, a transverse support and a movable block. The vertical support is extended in the up-down direction, the transverse support is extended in the left-right direction, the left and right ends of the transverse support are respectively connected to the vertical support, the transverse support is provided with an adjustment track extending in the left-right direction, the movable block is movably installed on the adjustment track and is hinged with the actuator to adjust the position of the actuator relative to the transverse support in the left-right direction.

5. The powertrain suspension system test device according to claim 4, characterized in that: The transverse support is movably connected to the vertical support to adjust the position of the transverse support relative to the vertical support in the up and down directions.

6. A powertrain suspension system test method, characterized in that: Using the powertrain suspension system test device as described in any one of claims 1 to 5, the powertrain suspension system test method comprises: Selecting an actuator, and hinge the actuator to the gantry; Adjusting the position of the actuator, and connecting the powertrain suspension system to the powertrain suspension system test device through standard parts; The powertrain suspension system test device is started to perform a bench test.

7. The powertrain suspension system test method according to claim 6, characterized in that: The powertrain suspension system includes a powertrain left suspension, a powertrain right suspension, a powertrain left bracket, a powertrain right bracket, a powertrain rear suspension and a powertrain rear bracket. The adjusting the position of the actuator and connecting the powertrain suspension system to the powertrain suspension system test device through standard parts include: The powertrain left suspension and the powertrain right suspension are respectively connected to the two first suspension connection parts through the standard parts, and the left and right ends of the powertrain rear bracket are respectively connected to the two first bracket connection parts through the standard parts; adjusting the position of the actuator; The powertrain left bracket and the powertrain right bracket are respectively connected to the second bracket connection portion through the standard parts, and the powertrain rear suspension is connected to the second suspension connection portion through the standard parts.

8. The powertrain suspension system test method according to claim 6, characterized in that: The starting of the powertrain suspension system test device to perform a bench test includes: Setting displacement and load protection on the powertrain suspension system test device, adjusting proportional-integral-derivative control parameters, and writing a test program; Starting the powertrain suspension system test device; When encountering an emergency, the powertrain suspension system test device is controlled to stop urgently. The emergency includes but is not limited to fire, personal injury, and component breakage of the powertrain suspension system test device.

9. The powertrain suspension system test method according to claim 6, characterized in that: After starting the powertrain suspension system test device and performing a bench test, the powertrain suspension system test method further includes: Re-testing the torque values ​​of all connection points between the powertrain suspension system and the powertrain suspension system test device, observing the state of the standard parts at each connection position, and obtaining test data; The test data were recorded and analyzed.

10. A powertrain suspension system test system, characterized in that: It comprises a control module and a powertrain suspension system test device as claimed in any one of claims 1 to 5, wherein the control module is used to control the operation of an actuator and a loading fixture of the powertrain suspension system test device to complete a bench test of a tested powertrain suspension system.

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