CN111332116A

CN111332116A - Power assembly suspension device

Info

Publication number: CN111332116A
Application number: CN202010193006.0A
Authority: CN
Inventors: 洪帆; 张社民; 张志明; 张继明; 陈远大
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-06-26

Abstract

The application relates to a power assembly suspension device, and relates to the technical field of automobile accessories. First support on this device includes a spacing frame and main spring, the second support is located the top of main spring and is equipped with the damping passageway in it, the both sides of second support are located to the elastic component symmetry, all be equipped with one in each elastic component and hold the chamber, all hold the chamber respectively with damping passageway intercommunication in order to form the damping room, the damping indoor packing has damping liquid, spacing frame is used for the displacement in order to control second support and power assembly through the restriction elastic component, the elastic component of each side is used for in the removal process with the corresponding side contact of spacing frame and take place the extrusion deformation after drive damping liquid in it flow towards the elastic component of opposite side. The application provides a power assembly suspension device has solved present to be in big displacement shock vibration operating mode to power assembly, and the relatively poor problem of effect when the elastic component that single materials such as exclusive utilization rubber formed carries on spacing and damping.

Description

Power assembly suspension device

Technical Field

The application relates to the technical field of auto parts, in particular to a power assembly suspension device.

Background

At present, the suspension plays a main role in supporting, limiting and isolating as a key part for connecting the power assembly and the vehicle body, the weight of the power assembly and various driving moments can cause various static loads and dynamic loads on the suspension, and the suspension is used as a main part for connecting the power assembly and the vehicle body and is used for bearing various loads of a power device. The suspension mainly comprises an active end bracket, a passive end bracket and an elastic part connected with the active and passive end brackets, wherein the active end bracket is connected with the power assembly, and the passive end bracket is directly or indirectly connected with the vehicle body.

In the related art, the main spring is mainly used for suspending the part for bearing, and the main spring is usually of a rubber structure. The other main function of the suspension is to limit the displacement of the power assembly, especially when the engine is started, stalled, and the vehicle is accelerated and decelerated, shifted, turned, etc., the load on the suspension is very large, the elastic deformation of the suspension will cause the power assembly to generate a very large displacement, which may cause the collision or interference between the power assembly and the vehicle body or other parts, causing damage or causing the engine to fail to work normally, and the deformation of the suspension when receiving a large load is controlled within a certain range to avoid the excessive displacement of the power assembly.

In addition, the suspension also needs to have a good vibration isolation effect, the power assembly can generate vibration of various degrees under various operating conditions, and the vibration is transmitted to the vehicle body through the suspension, so that the problem of vibration noise is caused, and discomfort and complaints of drivers are caused. Meanwhile, when the whole vehicle runs, the vehicle body is subjected to vibration impact due to factors such as uneven road surface, so that the vehicle body vibrates greatly, the vibration of the vehicle body is transmitted to the power assembly through the suspension, the power assembly is subjected to large displacement and vibration, and the engine cannot work normally or is interfered in collision. Therefore, the suspension must have good vibration isolation, which is to isolate the transmission of the vibration of the powertrain to the vehicle body and the transmission of the vibration of the vehicle body to the powertrain. At present, the vibration isolation design of the suspension is mainly the design of the stiffness damping characteristic of the suspension main spring, such as various rubber main spring structures.

However, in general, the main spring made of rubber has a limited bearing effect, and when the power assembly is prevented from displacing, the rigidity characteristic is single when the main spring is compressed, and the generated damping is small, so that the limiting and damping effects on large displacement impact vibration are poor, the main spring has a single direction, and can only limitedly relieve the limiting and vibration in a specific direction, and basically has no damping effect on large displacement vibration impact in other directions.

Disclosure of Invention

The embodiment of the application provides a power assembly suspension device to when being in big displacement shock vibration operating mode to power assembly in solving the correlation technique, the relatively poor problem of effect when the elastic component that single materials such as independent utilization rubber formed spacing and damping.

In a first aspect, a powertrain suspension device is provided, which is used for connecting a powertrain and a body structure of a whole vehicle, and comprises:

the first bracket is used for connecting the vehicle body structure and comprises a limiting frame, and a main spring is arranged in the limiting frame;

the second bracket is arranged at the top of the main spring and is used for connecting the power assembly, and a damping channel is arranged in the second bracket;

at least two elastic components, all the elastic component symmetry is located the both sides of second support and all are located in the spacing frame, each all be equipped with one in the elastic component and hold the chamber, all hold the chamber respectively with damping passageway intercommunication is in order to form the damping room, the damping indoor packing has damping liquid, spacing frame is used for through the restriction the displacement of elastic component is in order to control the displacement of second support and power assembly, the elastic component of each side be used for in the removal process with the corresponding side contact of spacing frame takes place the damping liquid of extrusion deformation back drive in it towards the opposite side the elastic component internal flow.

In some embodiments, the second bracket comprises:

the bottom of the first connecting part is connected with the top of the main spring, a vibration damping channel is arranged in the first connecting part, all the elastic pieces are symmetrically arranged on two sides of the first connecting part, and all the accommodating cavities are respectively communicated with the vibration damping channel to form a vibration damping chamber;

and the second connecting part is arranged on one side of the first connecting part and is used for connecting the power assembly.

In some embodiments, the second connecting portion is approximately trapezoidal in shape, and gradually increases in size along a direction away from the first connecting portion, and a plurality of first mounting holes are formed in the second connecting portion at intervals along the length direction of the second connecting portion, and the first mounting holes are used for connecting the power assembly.

In some embodiments, one side of the elastic element, which is close to the side wall of the limiting frame, is a trapezoidal structure with gradually decreasing size towards the direction close to the side wall of the limiting frame.

In some embodiments, an elastic limiting block is further disposed on a surface of the first connecting portion, the surface being away from the main spring, and the elastic limiting block is of a trapezoidal structure with a size gradually decreasing toward a direction away from the bottom of the limiting frame.

In some embodiments, the first bracket further includes two fixing bosses, the two fixing bosses are symmetrically disposed on two sides of the bottom of the limiting frame, each fixing boss is provided with a second mounting hole, and the second mounting holes are used for connecting the vehicle body structure.

In some embodiments, the main spring is disposed at the bottom of the limiting frame and has a trapezoidal structure with a gradually decreasing size in a direction away from the bottom of the limiting frame, a trapezoidal adjusting through hole is disposed on the main spring, a trapezoidal reinforcing member is disposed at the bottom of the adjusting through hole, and the reinforcing member and the main spring are integrally formed.

In some embodiments, the horizontal vertical distance between the outer side of the elastic member and the corresponding side of the limiting frame ranges from 0mm to 20 mm.

In some embodiments, the first connecting portion and the second connecting portion are integrally formed, the first connecting portion is integrally formed with the elastic member, and the main spring is integrally formed with the first connecting portion and the limiting frame.

In some embodiments, the main spring and the resilient member are both rubber materials.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a power assembly suspension device, because all be equipped with in the elastic component and hold the chamber, all hold the chamber and have formed the damping room through damping passageway intercommunication, and the damping intussuseption is filled with damping liquid, when power assembly takes place to remove and drives the second support and remove, the elastic component that is located second support both sides takes place to remove thereupon, if the displacement of removal is great, then the elastic component of one side can take place extrusion deformation and drive the elastic component of vibration damping liquid in it and flow towards the opposite side in the removal in-process and the corresponding side postback of spacing frame, with the removal and the reduction vibration of restriction second support and power assembly. The damping liquid in the elastic part can flow into the containing cavities of other elastic parts through the damping channel when the elastic part is compressed, the elastic part can automatically recover the initial shape when the compression is released, and the damping liquid flows back again.

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 powertrain suspension apparatus according to an embodiment of the present disclosure;

FIG. 2 is a vertical cross-sectional view of a powertrain suspension provided in an embodiment of the present application;

fig. 3 is a partial sectional view of a damping chamber of a powertrain suspension provided in an embodiment of the present application.

In the figure: 1-a first bracket, 10-a limiting frame, 11-a fixing boss, 12-a second mounting hole, 2-a main spring, 3-a second bracket, 30-a first connecting part, 31-a second connecting part, 32-a first mounting hole, 33-an elastic limiting block, 34-a damping channel, 4-an elastic part and 40-an accommodating cavity.

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.

The embodiment of the application provides a power assembly suspension device, and the problem that the effect is relatively poor when the elastic component that single materials such as rubber constitute is alone utilized to carry out spacing and damping when it can be solved to be in big displacement impact vibration operating mode to power assembly in the correlation technique is provided.

FIG. 1 is a schematic structural diagram of a power assembly suspension device, which is mainly used for connecting a power assembly and a vehicle body structure of a whole vehicle, and includes a first bracket 1, a second bracket 3 and at least two elastic members 4, wherein the first bracket 1 is used for connecting the vehicle body structure and includes a limiting frame 10, a main spring 2 is arranged in the limiting frame 10, the second bracket 3 is arranged at the top of the main spring 2 and is used for connecting the power assembly, a damping channel 34 is arranged in the second bracket 3, all the elastic members 4 are symmetrically arranged at two sides of the second bracket 3 and are all located in the limiting frame 10, an accommodating cavity 40 is arranged in each elastic member 4, all the accommodating cavities 40 are respectively communicated with the damping channel 34 to form a damping chamber, the damping chamber is filled with damping fluid, the limiting frame 10 is used for controlling the displacement of the second bracket 3 and the power assembly by limiting the displacement of the elastic members 4, and the elastic member 4 at each side is used for driving and driving the corresponding side of the limiting frame 10 to deform after contacting and extruding deformation in the The damping fluid in the damping fluid is moved to the other side of the elastic member 4 to reduce the vibration.

Specifically, the limiting frame 10 is square, and each side of the limiting frame 10 has a certain width, so that the elastic part 4 can be in contact with the corresponding side of the limiting frame 10 when the elastic part is greatly displaced along with the second support 3 and the power assembly, the movement of the second support 3 and the power assembly is limited by stopping the movement, and the situations of collision or interference between the power assembly and a vehicle body structure and the like are well avoided. In addition, the number of the elastic members 4 is even, and the number can be adjusted correspondingly according to the specific requirement on the rigidity damping characteristic.

Further, fig. 2 is a vertical sectional view of the powertrain suspension device, fig. 3 is a partial sectional view of a damping chamber of the powertrain suspension device, and the second bracket 3 includes a first connecting portion 30 and a second connecting portion 31, wherein a bottom of the first connecting portion 30 is connected to a top of the main spring 2, a damping channel 34 is disposed in the first connecting portion 30, the damping channel 34 is disposed in a flat and horizontal manner, and a size and a shape of the damping channel 34 may be adjusted according to a specific requirement for stiffness damping characteristics. All the elastic members 4 are symmetrically arranged at two sides of the first connecting portion 30, all the accommodating cavities 40 are respectively communicated with the damping channels 34 to form damping chambers, the damping chambers are in a sealed state and ensure that damping liquid in the damping chambers cannot leak, the second connecting portion 31 is arranged at one side of the first connecting portion 30, and the second connecting portion 31 is mainly used for connecting a power assembly.

Furthermore, the shape of the second connecting portion 31 is approximately trapezoidal, and the size of the second connecting portion is gradually increased along the direction away from the first connecting portion 30, a plurality of first mounting holes 32 are arranged on the second connecting portion 31 at intervals along the length direction of the second connecting portion, and the first mounting holes 32 are used for connecting a power assembly. Specifically, when the power assembly generates impact vibration and drives the first connecting portion 30 to generate rapid large displacement vibration through the second connecting portion 31, the elastic member 4 on one side is compressed after being triggered to generate extrusion deformation with the corresponding side of the limiting portion 10 in the moving process, due to the shape limitation of the damping channel 34, the damping fluid in the compressed elastic member 4 cannot rapidly flow into the accommodating cavities 40 of other elastic members 4 due to the limitation of the fluid flow rate of the damping channel 34, so that the fluid pressure in the accommodating cavity 40 of the elastic member 4 rapidly rises, the rapidly rising fluid pressure can provide instantly higher rigidity, and then the damping fluid in the elastic member 4 slowly passes through the damping channel 34 and flows into the accommodating cavities 40 of other elastic members 4, the fluid pressure in the elastic member 4 is slowly reduced, and the rigidity of the elastic member 4 is also synchronously and slowly reduced. In the process, the flow process of the damping fluid passing through the damping channel 34 can dissipate a large amount of impact energy acting on the elastic element 4, and the rigidity damping characteristic of the elastic element 4 in the compression process can effectively damp and reduce the vibration caused by large displacement impact, so that a good damping effect is achieved. After the shock vibration attenuation disappears, the elastic elements 4 are not compressed any more, the damping fluid in the containing cavities 40 of the elastic elements 4 can make the fluid in the containing cavities 40 flow back slowly due to the pressure difference and the rebound of the elastic elements 4, and the elastic elements 4 can automatically return to the initial state after a certain time.

Furthermore, one side of the elastic element 4 close to the side wall of the limiting frame 10 is a trapezoidal structure with gradually reduced size towards the direction close to the side wall of the limiting frame 10. Specifically, after the elastic element 4 is displaced greatly, one side of the elastic element 4 can be directly in complete contact with the side wall of the corresponding side of the limiting frame 10, so that the movement of the second bracket 3 and the power assembly is limited, the maximum displacement of the second bracket 3 and the power assembly is limited, and the conditions of collision, interference and the like between the power assembly and the vehicle body structure after excessive displacement are avoided.

Further, still be equipped with elasticity stopper 33 on the one side that main spring 2 was kept away from to first connecting portion 30, elasticity stopper 33 locates the top of first connecting portion 30, and is towards keeping away from the trapezium structure that spacing frame 10 bottom direction size gradually diminishes, and the trapezium structure is favorable to taking place deformation when the contact in order to consume kinetic energy, reduces the vibration.

Further, first support 1 still includes two fixed bosss 11, and the bottom both sides of spacing frame 10 are located to two fixed bosss 11 symmetries, all is equipped with second mounting hole 12 on each fixed boss 11, and second mounting hole 12 is used for connecting the body structure. From the perspective of structural design, the fixing boss 11 and the limiting frame 10 are integrally formed.

Further, main spring 2 locates the bottom of spacing frame 10, and is towards keeping away from the trapezoidal structure that spacing frame 10 bottom direction size diminishes gradually, is equipped with one on main spring 2 and is trapezoidal adjusting through-hole, and adjusting through-hole bottom is equipped with one and is trapezoidal reinforcement, reinforcement and main spring 2 integrated into one piece. The main spring 2 is mainly used to reduce displacement and vibration from various directions caused by a small displacement of the power train, and when the displacement is large, the main spring 2 has a limited damping effect and is therefore mainly acted on by the elastic member 4.

Furthermore, the value range of the horizontal vertical distance between the outer side of the elastic part 4 and the corresponding side of the limiting frame 10 is 0-20 mm.

Further, the first connecting portion 30 and the second connecting portion 31 are integrally formed, and the first connecting portion 30 and the elastic member 4 are integrally formed, so that the sealing effect of the damping chamber is ensured. The top of the main spring 2 is integrally formed with the first coupling portion 30, and the bottom of the main spring 2 is integrally formed with the position-restricting frame 10.

Further, the main spring 2 and the elastic member 4 are both made of rubber material, and the main spring 2 may be of a hydraulic structure.

The working principle of the device is as follows:

when the power assembly generates large displacement impact vibration in a specific direction, the second connecting portion 31 connected with the power assembly drives the first connecting portion 30 to generate large displacement impact vibration, when the elastic element 4 on one side of the first connecting portion 30 is not in contact with the side wall on the corresponding side of the limiting frame 10, the main spring 2 mainly plays a role in damping vibration, when the elastic element 4 on one side of the first connecting portion 30 moves for a certain distance and is in complete contact with the side wall on the corresponding side of the limiting frame 10 after collision, at the moment, the elastic element 4 is compressed and then generates extrusion deformation, so that damping liquid in the accommodating cavity 40 flows to the opposite accommodating cavity 40 through the damping channel 34, and due to the pressure difference of the accommodating cavities 40 and the rebound characteristic of the limiting elastic body, the elastic element 4 can automatically recover to an initial shape after being compressed. Due to the flowing characteristic and the flowing damping effect of the vibration damping liquid, after the elastic part 4 is in collision contact with the limiting frame 10, a specific rigidity characteristic consisting of a hydraulic pressure and an elastic force of the elastic part 4 and a large damping characteristic capable of greatly damping vibration are generated, the large-displacement impact vibration in a specific frequency range has a large rigidity and large damping characteristic, the small-displacement vibration has a small rigidity and small damping characteristic, the rigidity and damping characteristic can better isolate the vibration transmission between the power assembly and the vehicle body structure and greatly damp the large-displacement impact vibration of the power assembly, and the problem that the effect is poor when the elastic part which is formed by singly using rubber single materials such as the main spring 2 and the like is used for limiting and damping is solved.

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

1. The utility model provides a power assembly suspension device, its automobile body structure that is used for connecting power assembly and whole car which characterized in that, it includes:

the first support (1) is used for connecting the vehicle body structure, the first support (1) comprises a limiting frame (10), and a main spring (2) is arranged in the limiting frame (10);

the second bracket (3) is arranged at the top of the main spring (2) and is used for connecting the power assembly, and a damping channel (34) is arranged in the second bracket (3);

at least two elastic components (4), all elastic component (4) symmetry is located the both sides of second support (3) and all are located in spacing frame (10), each all be equipped with one in elastic component (4) and hold chamber (40), all hold chamber (40) respectively with damping passageway (34) intercommunication is in order to form the damping room, the damping room intussuseption is filled with damping liquid, spacing frame (10) are used for through the restriction the displacement of elastic component (4) is in order to control the displacement of second support (3) and power assembly, elastic component (4) of each side be used for in the removal process with the corresponding side contact of spacing frame (10) takes place the damping liquid of extrusion deformation back drive in it towards the opposite side the interior flow of elastic component (4).

2. A powertrain suspension arrangement, according to claim 1, characterized in that the second bracket (3) comprises:

the bottom of the first connecting part (30) is connected with the top of the main spring (2), a damping channel (34) is arranged in the first connecting part (30), all the elastic pieces (4) are symmetrically arranged on two sides of the first connecting part (30), and all the accommodating cavities (40) are respectively communicated with the damping channel (34) to form a damping chamber;

and the second connecting part (31) is arranged on one side of the first connecting part (30), and the second connecting part (31) is used for connecting the power assembly.

3. A powertrain mounting apparatus as recited in claim 2 wherein: the shape of the second connecting portion (31) is approximately trapezoidal, the size of the second connecting portion is gradually increased along the direction far away from the first connecting portion (30), a plurality of first mounting holes (32) are formed in the second connecting portion (31) along the length direction of the second connecting portion at intervals, and the first mounting holes (32) are used for being connected with the power assembly.

4. A powertrain mounting apparatus as recited in claim 1 wherein: one side of the elastic piece (4) close to the side wall of the limiting frame (10) is of a trapezoidal structure with the size gradually reduced towards the direction close to the side wall of the limiting frame (10).

5. A powertrain mounting apparatus as recited in claim 2 wherein: an elastic limiting block (33) is further arranged on one surface, away from the main spring (2), of the first connecting portion (30), and the elastic limiting block (33) is of a trapezoidal structure with the size gradually reduced towards the direction away from the bottom of the limiting frame (10).

6. A powertrain mounting apparatus as recited in claim 1 wherein: the first support (1) further comprises two fixing bosses (11), the two fixing bosses (11) are symmetrically arranged on two sides of the bottom of the limiting frame (10), each fixing boss (11) is provided with a second mounting hole (12), and the second mounting holes (12) are used for being connected with the vehicle body structure.

7. A powertrain mounting apparatus as recited in claim 1 wherein: the main spring (2) is arranged at the bottom of the limiting frame (10) and is of a trapezoid structure gradually reduced in size towards the direction of the bottom of the limiting frame (10), a trapezoidal adjusting through hole is formed in the main spring (2), a trapezoidal reinforcing piece is arranged at the bottom of the adjusting through hole, and the reinforcing piece and the main spring (2) are integrally formed.

8. A powertrain mounting apparatus as recited in claim 2 wherein: the value range of the horizontal vertical distance between the outer side of the elastic piece (4) and the corresponding side of the limiting frame (10) is 0-20 mm.

9. A powertrain mounting apparatus as recited in claim 2 wherein: the first connecting portion (30) and the second connecting portion (31) are integrally formed, the first connecting portion (30) and the elastic piece (4) are integrally formed, and the main spring (2), the first connecting portion (30) and the limiting frame (10) are integrally formed.

10. A powertrain mounting apparatus as recited in claim 1 wherein: the main spring (2) and the elastic piece (4) are both made of rubber materials.