CN111896276A - Test bench of power assembly suspension system idle speed vibration - Google Patents
Test bench of power assembly suspension system idle speed vibration Download PDFInfo
- Publication number
- CN111896276A CN111896276A CN202010725626.4A CN202010725626A CN111896276A CN 111896276 A CN111896276 A CN 111896276A CN 202010725626 A CN202010725626 A CN 202010725626A CN 111896276 A CN111896276 A CN 111896276A
- Authority
- CN
- China
- Prior art keywords
- suspension
- mounting
- suspensions
- group
- positions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/06—Steering behaviour; Rolling behaviour
Abstract
The application relates to a test bench for idle vibration of a power assembly suspension system, which relates to the technical field of engines, wherein the power assembly suspension system comprises a suspension group and a power assembly, and the suspension group comprises a plurality of suspensions used for being connected with the power assembly; this test bench includes: the rack body comprises two rack bodies which are arranged in parallel at intervals and are connected; the mounting and positioning set comprises a plurality of mounting positions for mounting the suspension, one part of all the mounting positions of the mounting and positioning set is arranged on one frame body, and the other part of all the mounting positions of the mounting and positioning set is arranged on the other frame body; and the relative position among the installation positions included in the installation positioning set is matched with the relative position among the suspensions included in the corresponding suspension set. The relative position between each suspension of the suspension group is not influenced by the change of the position of the main body of the rack, so that the installation position of the suspension contained in the tested suspension group is always consistent with the design value, and the test result is not influenced.
Description
Technical Field
The application relates to the technical field of engines, in particular to a test bench for idle speed vibration of a power assembly suspension system.
Background
In recent years, with the increasing requirements of customers on energy conservation and environmental protection of automobiles, the NVH (noise, vibration and harshness) performance of automobiles gradually becomes a focus of attention in the automobile development process. And the idle vibration is a very important component in the NVH performance of the whole automobile and also is the subjective feeling of an automobile user which is most sensitive to the automobile quality. Therefore, the idle vibration performance of the automobile must be considered with great importance in the design process.
At present, a power assembly suspension system is mainly adopted to play a role in vibration isolation for idle speed vibration of a power assembly (an engine, a gearbox and the like), and the power assembly suspension system is a component for connecting the power assembly and a frame body. The vibration isolation device is provided with a rubber mat suspension, a hydraulic suspension and a semi-active/active suspension, is used for supporting the quality of the power assembly, plays a role in vibration isolation, enables the operation of the power assembly to be more reliable, and enables the vibration of the power assembly to be transmitted to a frame body as less as possible, thereby improving the comfort.
In the related art, the idle vibration test of the power assembly suspension system is performed on a fixed rack, a suspension cushion of the suspension system and an iron floor are connected through four piers, and the suspension cushion is connected with an engine through a support.
The mode of connecting the suspension cushion and the iron floor through four piers has the following defects:
1. because the four piers are relatively independent, in the installation process of the power assembly suspension system, once the positions of the piers are slightly changed, the changed positions cannot be accurately determined, so that the relative positions of the suspensions of the power assembly suspension system are changed, the original test design value is deviated, and the test result of the idle vibration of the power assembly suspension system is influenced.
2. In the idle vibration test, the requirements for the whole vehicle characteristics and the optimization of a specific suspension system are different, so that the mounting space positions of the suspension system are different, and the positions of the four piers are fixed, so that the mounting space positions of the suspension system are not changed, and the problem of poor universality exists.
3. The four piers are of cantilever structures, and have poor transverse rigidity, so that the normal performance of the vibration isolation performance of the power assembly suspension system is directly influenced.
4. The difference between the suspended rigidity boundary of the power assembly and the state of the whole vehicle is large, so that the accuracy of vibration measurement data of the power assembly suspension system is poor.
5. Because four piers are needed to connect the suspension cushion and the iron floor, the requirement on a test site is high, and the operation is required on a fixed rack.
Therefore, the vibration data of the power assembly suspension system measured by the idle vibration test of the power assembly suspension system in the related art is greatly different from the idle vibration measurement data of the suspension system in the state of the whole vehicle, sometimes the trend is not consistent, and the availability of the measurement data is poor.
Disclosure of Invention
The embodiment of the application provides a test bench of power assembly suspension system idle vibration to in solving power assembly suspension system installation in the correlation technique, in case there is very little change in the position of pier, just can't the size of accurate determination change, lead to the relative position between each suspension of power assembly suspension system to change, deviated original experimental design value, thereby influence the problem of power assembly suspension system's idle vibration's test result.
In a first aspect, a test bench for idle vibration of a powertrain suspension system is provided, the powertrain suspension system comprises a suspension set and a powertrain, wherein the suspension set comprises a plurality of suspensions for connecting with the powertrain; this test bench includes:
the rack body comprises two rack bodies which are arranged in parallel at intervals and are connected;
at least one group of mounting and positioning groups, wherein each mounting and positioning group comprises a plurality of mounting positions for mounting the suspension, one part of all the mounting positions included in each mounting and positioning group is arranged on one frame body, and the other part of all the mounting positions included in each mounting and positioning group is arranged on the other frame body; and the relative position between the installation positions included in the installation positioning set is matched with the relative position between the suspensions included in the corresponding suspension set.
In some embodiments, the test rig comprises a plurality of sets of mounting locations, different sets of mounting locations comprising different relative positions between the mounting locations.
In some embodiments, all the mounting positions included in the mounting and positioning group are arranged on the two rack bodies in equal number;
the suspension group comprises four suspensions, two of the four suspensions are front suspensions, and the other two suspensions are rear suspensions;
and in each mounting and positioning group, the mounting positions for mounting the front suspension are the same and are positioned on the same frame body.
In some embodiments, all the mounting positions included in the mounting and positioning group are arranged on the two rack bodies in equal number;
the suspension group comprises four suspensions, two of the four suspensions are front suspensions, and the other two suspensions are rear suspensions;
and in each mounting and positioning group, the mounting positions for mounting the rear suspension are the same and are positioned on the same frame body.
In some embodiments, all the mounting positions included in the mounting and positioning group are arranged on the two rack bodies in equal number;
the suspension group comprises four suspensions, two of the four suspensions are front suspensions, and the other two suspensions are rear suspensions;
in each of the mounting and positioning groups, the mounting positions for mounting the front suspension are different from each other and the mounting positions for mounting the rear suspension are different from each other on the same frame body.
In some embodiments, each of the mounting positions of the frame body is provided with a mounting hole penetrating through the frame body.
In some embodiments, the suspension set comprises four suspensions, two of which are front suspensions and two of which are rear suspensions;
the test stand further comprises:
the two brackets are respectively arranged on two mounting positions for mounting the two front suspensions;
and two ends of the first supporting rod are respectively connected to the two brackets.
In some embodiments, the test rig further comprises a second support bar, the second support bar comprising:
the middle rod is transversely arranged between the two frame bodies;
the two connecting parts are respectively connected to two ends of the middle rod; and the two connecting parts are respectively close to two mounting positions for mounting the two rear suspensions and are connected to the outer sides of the two frame bodies.
In some embodiments, the frame body is provided with a plurality of adjusting holes arranged at intervals along the length direction of the frame body, the connecting portion is provided with a connecting hole matched with the adjusting holes, the connecting portion is connected with the frame body through a bolt, and the bolt penetrates through the adjusting holes and the connecting hole.
In some embodiments, the test bed further comprises two wheel assemblies, the two wheel assemblies are spaced apart from each other at the bottom of the frame body, and the wheel assemblies comprise:
the connecting bridge is supported at the bottom end of the frame body;
the two wheels are respectively connected to two ends of the connecting bridge;
two leaf springs, two the leaf spring branch is located two on the support body, the leaf spring is located perpendicularly connect on the bridge, just the both ends of leaf spring all connect in on the support body.
The beneficial effect that technical scheme that this application provided brought includes: during the test, the mounting positions and mounting postures among the suspensions of the suspension group can be accurately determined only by mounting the suspensions of the suspension group at the mounting positions of the corresponding mounting positioning groups, and the idle vibration test result of the power assembly suspension system cannot be influenced. And because two support bodies of the rack main body of this application embodiment are connected and are formed overall structure, consequently as long as confirm on two support bodies with the position on the support body of each mounted position of the mounting location group that the suspension group corresponds, no matter where the rack main body moves, relative position between each mounted position can not change, consequently relative position between each suspension of suspension group to and the installation gesture of each suspension do not receive the change influence of rack main body position, make the mounted position of the suspension that the suspension group that tests contains keep unanimous with the design value all the time, can not influence the test result yet.
The embodiment of the application provides a test bench for idle vibration of a power assembly suspension system, and the test bench provided by the embodiment of the application determines the relative positions of suspensions included in a suspension group of the power assembly suspension system according to the characteristics of a whole vehicle and the optimization requirements of the suspension system; and determining the positions of the mounting positioning group on the two frame bodies. During the test, the mounting positions and mounting postures among the suspensions of the suspension group can be accurately determined only by mounting the suspensions of the suspension group at the mounting positions of the corresponding mounting positioning groups, and the idle vibration test result of the power assembly suspension system cannot be influenced. And because two support bodies of the rack main body of this application embodiment are connected and are formed overall structure, consequently as long as confirm on two support bodies with the position on the support body of each mounted position of the mounting location group that the suspension group corresponds, no matter where the rack main body moves, relative position between each mounted position can not change, consequently relative position between each suspension of suspension group to and the installation gesture of each suspension do not receive the change influence of rack main body position, make the mounted position of the suspension that the suspension group that tests contains keep unanimous with the design value all the time, can not influence the test result yet.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rack main body of a test rack for idle vibration of a powertrain suspension system provided by an embodiment of the present application;
FIG. 2 is a schematic structural view of a gantry body and a suspension set;
FIG. 3 is a schematic diagram of the powertrain suspension system prior to mounting on a test rig;
FIG. 4 is a schematic diagram of the powertrain mounted on the test bed.
In the figure: 1. a suspension group; 11. front suspension; 12. rear suspension; 2. a power assembly; 20. an engine; 21. a gearbox; 3. a rack main body; 30. a frame body; 300. an adjustment hole; 4. installing a positioning group; 40. mounting position; 5. a first support bar; 6. a second support bar; 60. an intermediate lever; 61. a connecting portion; 610. connecting holes; 7. a wheel assembly; 70. a connecting bridge; 71. a wheel; 72. a plate spring; 8. a bracket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, the embodiment of the application provides a test bench for idle vibration of a powertrain suspension system, the powertrain suspension system comprises a suspension group 1 and a powertrain 2, the powertrain 2 comprises an engine 20 and a gearbox 21, the suspension group 1 comprises a plurality of suspensions for connecting with the powertrain 2, and the test bench is used for testing idle vibration of the powertrain suspension system to evaluate the vibration isolation performance of the powertrain suspension system. This test bench includes rack main part 3 and at least a set of installation location group 4, and a set of installation location group 4 corresponds a set of suspension group 1 of installation, and rack main part 3 includes two parallel interval settings, and continuous support body 30 for two support bodies 30 of rack main part 3 are connected and are formed overall structure, and two support bodies 30 are not independent.
The mounting and positioning group 4 comprises a plurality of mounting positions 40 for mounting the suspension, a part of all the mounting positions 40 included in the mounting and positioning group 4 is arranged on one frame body 30 and is used for mounting a part of the suspension in the corresponding suspension group 1, and the other part is arranged on the other frame body 30 and is used for mounting the other part of the suspension in the corresponding suspension group 1; and the relative positions between the mounting positions 40 comprised by the mounting and positioning group 4 match the relative positions between the suspensions comprised by the corresponding suspension group 1. For example: the suspension set 1 includes four suspensions, two of which are mounted on one frame 30, the two suspensions are labeled as a and a ', the other two are mounted on the other frame 30, the two suspensions are labeled as B and B', the relative positions of the four suspensions A, A ', B and B' are known according to the design requirements of the characteristics of the entire vehicle, and the positions of the four mounting positions 40 of the mounting positioning set 4 on the two frames 30 are determined according to the relative positions of the four suspensions A, A ', B and B' when the rack main body 3 is designed. Therefore, when the vibration isolation performance of the suspension set 1 needs to be tested, the mounting position and the posture of each suspension of the suspension set 1 can be accurately determined only by mounting the four suspensions of the suspension set 1 on the four mounting positions 40 included in the corresponding suspension set 1.
Moreover, because the two frame bodies 30 of the rack main body 3 of the embodiment of the present application are connected to form an integral structure, as long as the positions of the installation positions 40 of the installation positioning group 4 corresponding to the suspension group 1 on the frame bodies 30 are determined on the two frame bodies 30, no matter where the rack main body 3 moves, the relative positions between the installation positions 40 will not change, so that the relative positions between the suspensions of the suspension group 1 and the installation postures of the suspensions are not affected by the change of the position of the rack main body 3, so that the installation positions of the suspensions included in the tested suspension group 1 are always consistent with the design values, and the test result will not be affected.
The application principle of the test bench of the idle vibration of the power assembly suspension system of the embodiment of the application is as follows:
according to the characteristics of the whole vehicle and the optimization requirements of the suspension system, determining the relative positions of the suspensions included in the suspension group 1 of the power assembly suspension system, and when the test bench of the embodiment of the application is manufactured, determining the relative positions of the installation positions 40 of the corresponding installation positioning group 4 according to the relative positions of the suspensions of the suspension group 1, so that the relative positions of the installation positions 40 included in the installation positioning group 4 are matched with the relative positions of the suspensions included in the corresponding suspension group 1; and determines the position of each mounting position 40 of the mounting and positioning group 4 on the two shelves 30. During the test, the mounting positions and mounting postures among the suspensions of the suspension group 1 can be accurately determined only by mounting the suspensions of the suspension group 1 on the mounting positions 40 of the corresponding mounting positioning group 4, and the test result of the idle vibration of the power assembly suspension system cannot be influenced. Moreover, because the two frame bodies 30 of the rack main body 3 of the embodiment of the present application are connected to form an integral structure, as long as the positions of the installation positions 40 of the installation positioning group 4 corresponding to the suspension group 1 on the frame bodies 30 are determined on the two frame bodies 30, no matter where the rack main body 3 moves, the relative positions between the installation positions 40 will not change, so that the relative positions between the suspensions of the suspension group 1 and the installation postures of the suspensions are not affected by the change of the position of the rack main body 3, so that the installation positions of the suspensions included in the tested suspension group 1 are always consistent with the design values, and the test result will not be affected.
Optionally, the test stand comprises a plurality of sets of mounting positions 4, and different sets of mounting positions 4 comprise different mounting positions 40 with respect to each other. For example: according to the characteristics of the whole vehicle and the optimization requirements of a suspension system, two groups of tested suspension groups 1 are respectively marked as an a suspension group and a b suspension group, then the mounting and positioning groups 4 comprise two groups of mounting and positioning groups 4 corresponding to the two groups of suspension groups 1, and the mounting and positioning groups are respectively marked as an a 'mounting and positioning group and a b' mounting and positioning group, and because the relative positions of the suspensions included in the a suspension group and the b suspension group are different, the relative positions of the mounting positions 40 included in the a 'mounting and positioning group and the b' mounting and positioning group are also different so as to adapt to the two groups of suspension groups 1, the test bench of the embodiment of the application has wide applicability and can be suitable for the tests of different suspension groups 1.
Preferably, as shown in fig. 2, all the mounting positions 40 included in the mounting and positioning group 4 are arranged on the two frame bodies 30 in equal numbers, that is, the number of all the mounting positions 40 included in the mounting and positioning group 4 is even, because the suspension included in the suspension group 1 is generally even and is symmetrically distributed on both sides of the power assembly 2, so as to ensure the stability of the vehicle.
Each suspension group 1 of the embodiment of the application comprises four suspensions, wherein two of the four suspensions are front suspensions 11, and the other two suspensions are rear suspensions 12; the two front suspensions 11 are used for being connected to two sides of the engine 20, the two rear suspensions 12 are used for being connected to two sides of the gearbox, the two front suspensions 11 are symmetrically distributed at the front ends of the two frame bodies 30, and the two rear suspensions 12 are symmetrically distributed at the rear ends of the two frame bodies 30. The number of the mounting positions 40 included in the mounting and positioning group 4 corresponding to each suspension group 1 is also four, two of the mounting positions are symmetrically distributed on the two frame bodies 30, and the other two mounting positions are symmetrically distributed at the rear ends of the two frame bodies 30.
Moreover, in each mounting and positioning group 4, the mounting positions 40 for mounting the front suspension 11 are the same on the same frame body 30. For example: the a suspension group and the b suspension group respectively comprise four suspensions, two front suspensions 11 of the four suspensions of the a suspension group are respectively recorded as a1 front suspensions and a2 front suspensions, and two rear suspensions 12 are respectively recorded as a3 rear suspensions and a4 rear suspensions; two front suspensions 11 of the four suspensions of the b suspension group are respectively denoted as b1 front suspension and b2 front suspension, and two rear suspensions 12 are respectively denoted as b3 rear suspension and b4 rear suspension. Then a1 front suspension and b1 front suspension are on the same shelf 30 and in the same position, a2 front suspension and b2 front suspension are on the same shelf 30 and in the same position; therefore, when the suspension group a and the suspension group b are tested, the positions of the two front suspensions 11 of the suspension group a and the suspension group b on the two frame bodies 30 are the same, so that the positions of the two rear suspensions 12 on the two frame bodies 30 are only required to be changed, the positions of the two front suspensions 11 on the two frame bodies 30 are not required to be changed, the test time is saved, and the test efficiency is improved.
Preferably, as shown in fig. 2, all the mounting positions 40 included in the mounting and positioning group 4 are arranged on the two frame bodies 30 in equal numbers, that is, the number of all the mounting positions 40 included in the mounting and positioning group 4 is even, because the suspension included in the suspension group 1 is generally even and is symmetrically distributed on both sides of the power assembly 2, so as to ensure the stability of the vehicle.
Each suspension group 1 of the embodiment of the application comprises four suspensions, wherein two of the four suspensions are front suspensions 11, and the other two suspensions are rear suspensions 12; the two front suspensions 11 are used for being connected to two sides of the engine 20, the two rear suspensions 12 are used for being connected to two sides of the gearbox, the two front suspensions 11 are symmetrically distributed at the front ends of the two frame bodies 30, and the two rear suspensions 12 are symmetrically distributed at the rear ends of the two frame bodies 30. The number of the mounting positions 40 included in the mounting and positioning group 4 corresponding to each suspension group 1 is also four, two of the mounting positions are symmetrically distributed on the two frame bodies 30, and the other two mounting positions are symmetrically distributed at the rear ends of the two frame bodies 30.
Moreover, in each mounting and positioning group 4, the mounting positions 40 for mounting the rear suspension 12 are the same on the same frame body 30. That is, the a3 rear suspension and the b3 rear suspension are on the same frame 30 and are located at the same position, and the a4 rear suspension and the b4 rear suspension are on the same frame 30 and are located at the same position; therefore, when the suspension group a and the suspension group b are tested, the positions of the two rear suspensions 12 of the suspension group a and the suspension group b on the two frame bodies 30 are the same, so that the positions of the two front suspensions 11 on the two frame bodies 30 are only required to be changed, the positions of the two rear suspensions 12 on the two frame bodies 30 are not required to be changed, the test time is saved, and the test efficiency is improved.
Preferably, referring to fig. 2, in each mounting and positioning set 4, the positions of the mounting positions 40 for mounting the front suspension 11 and the positions of the mounting positions 40 for mounting the rear suspension 12 are different on the same frame body 30. That is, the a1 front suspension and the b1 front suspension are on the same frame 30 and are not located at the same position, and the a2 front suspension and the b2 front suspension are on the same frame 30 and are not located at the same position; the a3 rear suspension and the b3 rear suspension are on the same frame 30 and are not located at the same position, and the a4 rear suspension and the b4 rear suspension are on the same frame 30 and are not located at the same position; therefore, when the a-suspension group and the b-suspension group are tested, the positions of the two front suspensions 11 on the two racks 30 and the positions of the two rear suspensions 12 on the two racks 30 need to be changed to test different suspension groups 1.
Further, as shown in fig. 1, each mounting position 40 on the frame body 30 is provided with a mounting hole penetrating through the frame body 30, the mounting hole is a standard hole, the suspension is provided with a mounting hole matched with the mounting hole, and the suspension is mounted on the mounting hole through a bolt. And the four mounting positions 40 corresponding to the four suspensions a1 front suspension, a2 front suspension, a3 rear suspension and a4 rear suspension included in the a suspension group are respectively marked as a1 ', a 2', a3 'and a 4', all the mounting positions a1 'are positioned at the front end of one frame body 30, and the mounting positions a 1' are arranged and combined, the horizontal direction is uniformly spaced by 50mm, the vertical direction is uniformly spaced by 20mm, and a grid-shaped structure is formed; similarly, the mounting positions a2 ', a3 ' and a4 ' are also arranged and combined respectively. In this way, the specific relative position value between the mounting positions 40 included in each mounting and positioning group 4 can be clearly known, and the suspension group 1 can be conveniently mounted on the mounting position 40 of the corresponding mounting and positioning group 4.
Further, referring to fig. 1, the suspension set 1 includes four suspensions, two of the four suspensions are front suspensions 11, and the other two suspensions are rear suspensions 12; the two front suspensions 11 are used for being connected to two sides of the engine 20, the two rear suspensions 12 are used for being connected to two sides of the gearbox, the two front suspensions 11 are symmetrically distributed at the front ends of the two frame bodies 30, and the two rear suspensions 12 are symmetrically distributed at the rear ends of the two frame bodies 30. The number of the mounting positions 40 included in the mounting and positioning group 4 corresponding to each suspension group 1 is also four, two of the mounting positions are symmetrically distributed on the two frame bodies 30, and the other two mounting positions are symmetrically distributed at the rear ends of the two frame bodies 30.
The test bench further comprises two brackets 8 for supporting the front suspensions 11 and a first support rod 5, wherein the two brackets 8 are respectively arranged on two mounting positions 40 for mounting the two front suspensions 11; the position and attitude of the suspended cushion can be determined according to the sizes of the two brackets 8 to ensure the suspended cushion to perform the best vibration isolation function. The two ends of the first supporting rod 5 are respectively connected to the two brackets 8. Because the positions of the two brackets 8 can bear the suspension and the power assembly 2, the two brackets are easy to deform, and the relative positions of the two mounting positions 40 corresponding to the two brackets 8 can be changed, so that the position of the suspension cushion is changed, and the test result is influenced, therefore, the two brackets 8 are supported by the first support rod 5, and the frame body 30 at the position is prevented from deforming and influencing the test result.
Further, referring to fig. 1, the test bench further includes a second support bar 6, the second support bar 6 includes a middle bar 60 and two connecting portions 61, the middle bar 60 is transversely disposed between the two frame bodies 30; the two connecting portions 61 are connected to both ends of the intermediate lever 60, respectively; and the two connecting portions 61 are respectively adjacent to the two mounting positions 40 for mounting the two rear suspensions 12 and connected to the outer sides of the two frame bodies 30. The second support bar 6 is used to prevent the frame body 30, which is close to the two rear suspensions 12, from deforming and affecting the relative position between the two corresponding mounting positions 40, thereby causing the position of the suspension cushion to change and affecting the test result. Therefore, the embodiment of the present application supports the frame body by the second support bar 6, and prevents the frame body 30 from deforming, which affects the test result. Also, since the mounting position of the transmission case 21 is low near the position where the transmission case 21 is mounted, if the second support rod 6 is directly supported between the two housing bodies 30, it may interfere with the transmission case 21, and thus the two coupling portions 61 of the second support rod 6 are coupled to the outer sides of the two housing bodies 30.
Further, referring to fig. 1, the frame body 30 is provided with a plurality of adjusting holes 300 arranged at intervals along the length direction of the frame body 30, the connecting portion 61 is provided with a connecting hole 610 adapted to the adjusting holes 300, the connecting portion 61 is connected to the frame body 30 through a bolt, and the bolt penetrates through the adjusting holes 300 and the connecting hole 610. Since the characteristic and functional requirements of the powertrain 2 are different, the structure of the powertrain 2 is also different, and the structural sizes of the engine 20 and the transmission case 21 are also different, so that the position of the second support rod 6 on the frame body 30 needs to be changed in order to avoid interference with the transmission case 21, and therefore, the position of the second support rod 6 on the frame body 30 is changed by designing a plurality of adjusting holes 300, so as to adapt to different powertrains 2.
Further, referring to fig. 3 and 4, the test bench further includes two wheel assemblies 7, the two wheel assemblies 7 are spaced at the bottom of the frame body 30, the wheel assemblies 7 include a connecting bridge 70, two wheels 71 and two leaf springs 72, and the connecting bridge 70 is supported at the bottom end of the frame body 30; two wheels 71 are respectively connected to both ends of the connecting axle 70; the two plate springs 72 are respectively disposed on the two frame bodies 30, the plate springs 72 are vertically disposed on the connecting bridge 70, and both ends of the plate springs 72 are connected to the frame bodies 30. This application embodiment is through simulating the structure of whole car, design support body 30 is similar to whole car frame, design wheel 71 similar with whole car, connecting bridge 70 and leaf spring 72, make the test bench of this application embodiment be close whole car state, the rigidity border that the power assembly hangs down is similar with whole car state, make test structure more be close whole car, measured data is more reliable, and design wheel also makes the test bench of this application not restricted by the place, and can remove wantonly, convenient experiment.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A test bench for idle vibration of a power assembly suspension system comprises a suspension group (1) and a power assembly (2), wherein the suspension group (1) comprises a plurality of suspensions for being connected with the power assembly (2); it is characterized in that the test bench comprises:
the rack body (3) comprises two rack bodies (30) which are arranged in parallel at intervals and are connected;
at least one mounting and positioning group (4), wherein the mounting and positioning group (4) comprises a plurality of mounting positions (40) for mounting the suspension, a part of all the mounting positions (40) included in the mounting and positioning group (4) is arranged on one of the shelf bodies (30), and the other part of all the mounting positions (40) is arranged on the other shelf body (30); and the relative position between the installation positions (40) included in the installation positioning group (4) is matched with the relative position between the suspensions included in the corresponding suspension group (1).
2. The powertrain suspension system idle vibration test rig of claim 1, characterized in that the test rig includes a plurality of mounting nest sets (4), different ones of the mounting nest sets (4) including different relative positions between the mounting locations (40).
3. The powertrain suspension system idle vibration test stand of claim 2, characterized in that the mounting location group (4) comprises an equal number of mounting locations (40) arranged on both frame bodies (30);
the suspension group (1) comprises four suspensions, two of which are front suspensions (11) and the other two are rear suspensions (12);
in each installation positioning group (4), the installation positions (40) for installing the front suspension (11) are the same and are positioned on the same frame body (30).
4. The powertrain suspension system idle vibration test stand of claim 2, characterized in that the mounting location group (4) comprises an equal number of mounting locations (40) arranged on both frame bodies (30);
the suspension group (1) comprises four suspensions, two of which are front suspensions (11) and the other two are rear suspensions (12);
in each installation positioning group (4), the installation positions (40) for installing the rear suspension (12) are the same and are positioned on the same frame body (30).
5. The powertrain suspension system idle vibration test stand of claim 2, characterized in that the mounting location group (4) comprises an equal number of mounting locations (40) arranged on both frame bodies (30);
the suspension group (1) comprises four suspensions, two of which are front suspensions (11) and the other two are rear suspensions (12);
in each installation positioning group (4), the installation positions (40) for installing the front suspension (11) are different from each other and the installation positions (40) for installing the rear suspension (12) are different from each other on the same frame body (30).
6. The test bed for idle vibration of powertrain suspension system of claim 1, wherein each of said mounting locations (40) on said frame body (30) is provided with a mounting hole extending through said frame body (30).
7. The powertrain suspension system idle vibration test rig of claim 1, wherein the suspension set (1) includes four suspensions, two of which are front suspensions (11) and two of which are rear suspensions (12);
the test stand further comprises:
the two brackets (8) are used for supporting the front suspension (11), and the two brackets (8) are respectively arranged on two mounting positions (40) for mounting the two front suspensions (11);
the two ends of the first supporting rod (5) are respectively connected to the two brackets (8).
8. The powertrain suspension system idle vibration test rig of claim 7, further comprising a second support bar (6), the second support bar (6) comprising:
the middle rod (60) is transversely arranged between the two frame bodies (30);
two connecting parts (61), wherein the two connecting parts (61) are respectively connected to two ends of the middle rod (60); and the two connecting parts (61) are respectively close to two mounting positions (40) for mounting the two rear suspensions (12) and are connected to the outer sides of the two frame bodies (30).
9. The test bed for idle vibration of power assembly suspension system according to claim 8, wherein the frame body (30) is provided with a plurality of adjusting holes (300) arranged at intervals along the length direction of the frame body (30), the connecting portion (61) is provided with a connecting hole (610) matched with the adjusting holes (300), the connecting portion (61) is connected with the frame body (30) through a bolt, and the bolt penetrates through the adjusting holes (300) and the connecting hole (610).
10. The powertrain suspension system idle vibration test bed of claim 1, characterized in that it further comprises two wheel assemblies (7), two wheel assemblies (7) being spaced apart from each other at the bottom of the frame body (30), the wheel assemblies (7) comprising:
the connecting bridge (70), the said connecting bridge (70) is supported on the bottom end of the said support body (30);
two wheels (71), wherein the two wheels (71) are respectively connected to two ends of the connecting bridge (70);
two leaf springs (72), two leaf spring (72) branch is located two on support body (30), leaf spring (72) are located perpendicularly connect on bridge (70), just the both ends of leaf spring (72) all connect in on support body (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725626.4A CN111896276A (en) | 2020-07-24 | 2020-07-24 | Test bench of power assembly suspension system idle speed vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725626.4A CN111896276A (en) | 2020-07-24 | 2020-07-24 | Test bench of power assembly suspension system idle speed vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111896276A true CN111896276A (en) | 2020-11-06 |
Family
ID=73190004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010725626.4A Pending CN111896276A (en) | 2020-07-24 | 2020-07-24 | Test bench of power assembly suspension system idle speed vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111896276A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278340A (en) * | 2013-05-03 | 2013-09-04 | 华晨汽车集团控股有限公司 | Motive power assembly suspension vibration noise testing system and testing method |
| CN103723025A (en) * | 2014-01-24 | 2014-04-16 | 安徽江淮汽车股份有限公司 | Suspension system for electric vehicle power assembly |
| CN205009953U (en) * | 2015-09-16 | 2016-02-03 | 北京长城华冠汽车科技股份有限公司 | Power assembly mounting bracket and car |
| CN106383032A (en) * | 2016-09-19 | 2017-02-08 | 东风汽车公司 | Power assembly fixing clamp for speeding up interior noise contribution removal test |
| CN107487367A (en) * | 2016-11-02 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Power assembly bracket and electric automobile |
| CN108725170A (en) * | 2018-05-28 | 2018-11-02 | 安徽江淮汽车集团股份有限公司 | A kind of powertrain mounting system |
| CN208297132U (en) * | 2018-03-28 | 2018-12-28 | 国机智骏（北京）汽车科技有限公司 | The rack vibration-testing apparatus of power assembly system |
| CN208585321U (en) * | 2018-07-26 | 2019-03-08 | 北京新能源汽车股份有限公司 | Shock bracket |
| CN209305324U (en) * | 2018-11-12 | 2019-08-27 | 安徽华菱汽车有限公司 | A kind of pure electric vehicle cargo vehicle driving motor suspending apparatus |
| CN209727479U (en) * | 2019-01-04 | 2019-12-03 | 安路普（北京）汽车技术有限公司 | A kind of Air Suspension for Commercial Vehicles System Functional Test rack and system |
| CN211000894U (en) * | 2019-09-27 | 2020-07-14 | 上海汽车集团股份有限公司 | Electric motor car power assembly strutting arrangement, sub vehicle frame assembly and car |
-
2020
- 2020-07-24 CN CN202010725626.4A patent/CN111896276A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278340A (en) * | 2013-05-03 | 2013-09-04 | 华晨汽车集团控股有限公司 | Motive power assembly suspension vibration noise testing system and testing method |
| CN103723025A (en) * | 2014-01-24 | 2014-04-16 | 安徽江淮汽车股份有限公司 | Suspension system for electric vehicle power assembly |
| CN205009953U (en) * | 2015-09-16 | 2016-02-03 | 北京长城华冠汽车科技股份有限公司 | Power assembly mounting bracket and car |
| CN106383032A (en) * | 2016-09-19 | 2017-02-08 | 东风汽车公司 | Power assembly fixing clamp for speeding up interior noise contribution removal test |
| CN107487367A (en) * | 2016-11-02 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Power assembly bracket and electric automobile |
| CN208297132U (en) * | 2018-03-28 | 2018-12-28 | 国机智骏（北京）汽车科技有限公司 | The rack vibration-testing apparatus of power assembly system |
| CN108725170A (en) * | 2018-05-28 | 2018-11-02 | 安徽江淮汽车集团股份有限公司 | A kind of powertrain mounting system |
| CN208585321U (en) * | 2018-07-26 | 2019-03-08 | 北京新能源汽车股份有限公司 | Shock bracket |
| CN209305324U (en) * | 2018-11-12 | 2019-08-27 | 安徽华菱汽车有限公司 | A kind of pure electric vehicle cargo vehicle driving motor suspending apparatus |
| CN209727479U (en) * | 2019-01-04 | 2019-12-03 | 安路普（北京）汽车技术有限公司 | A kind of Air Suspension for Commercial Vehicles System Functional Test rack and system |
| CN211000894U (en) * | 2019-09-27 | 2020-07-14 | 上海汽车集团股份有限公司 | Electric motor car power assembly strutting arrangement, sub vehicle frame assembly and car |
Non-Patent Citations (1)
| Title |
|---|
| 岳巍 等: "基于台架试验的电动汽车动力总成悬置可靠性验证研究", 《时代汽车》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208000201U (en) | A kind of 1/4 vehicle active suspension pilot system | |
| JPS63503532A (en) | Body suspension assembly | |
| US5777243A (en) | Adjustable vehicle simulator rig for chassis dynamometer testing | |
| CN112098114A (en) | Design method of universal platform for automobile power assembly performance test | |
| CN111896276A (en) | Test bench of power assembly suspension system idle speed vibration | |
| CN111929069B (en) | Test bench for simulating working condition of vehicle frame | |
| CN214251564U (en) | Two-way dynamic and static rigidity testing device for commercial vehicle power assembly suspension | |
| CN207095875U (en) | A kind of dynamic assembly suspension experimental rig and its lower clamp | |
| CN115876488A (en) | Fatigue test device for automobile rear bracket assembly | |
| CN106840712B (en) | Multipurpose suspension performance and durability test stand | |
| CN114838962A (en) | Front suspension system testing device | |
| CN111707482B (en) | Eight-channel multifunctional suspension road simulation test bed | |
| CN212928637U (en) | Damping mechanism for elevator traction machine | |
| CN219777089U (en) | Power assembly load test fixture | |
| CN217638022U (en) | Tool applied to test of rack of automobile lower swing arm suspension system | |
| CN104527816A (en) | Cab full-floatation suspension device | |
| CN209979243U (en) | Rack for bending test of heavy truck frame | |
| CN219866022U (en) | Built-in bracket type top adhesive | |
| CN211374083U (en) | Trolley type suspension endurance test tool | |
| CN111964825A (en) | Load collection system and load collection method | |
| CN217179909U (en) | Supporting frame | |
| CN216646576U (en) | Electric energy quality analyzer with anti-vibration structure | |
| CN116067678A (en) | Power assembly load test fixture | |
| CN205273158U (en) | Engine suspension support assembly | |
| CN215640094U (en) | Durable testboard of back lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201106 |