CN113561752B

CN113561752B - Power assembly auxiliary stay suspension

Info

Publication number: CN113561752B
Application number: CN202110855155.3A
Authority: CN
Inventors: 杨俊青; 王亚平; 杨雄; 唐西强; 曾聪; 裴泽健; 尚健; 李双锋
Original assignee: Dongfeng Huashen Motor Co Ltd
Current assignee: Dongfeng Huashen Motor Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-08-12
Anticipated expiration: 2041-07-27
Also published as: CN113561752A

Abstract

The application relates to a power assembly auxiliary support suspension, which comprises an air bag component, a buffer mechanism and an air inlet mechanism, wherein the air bag component is provided with a first cavity, and the lower end of the air bag component is upwards sunken to form a first sunken area; buffer gear locates the lower extreme of gasbag subassembly, this buffer gear's inside has the second cavity, this second cavity and external intercommunication, air inlet mechanism locates in the first depressed area, and enclose synthetic third cavity with the inboard of first depressed area, air inlet mechanism has the chamber of admitting air, the intracavity that should admit air is equipped with a water conservancy diversion subassembly that has inlet channel, the water conservancy diversion subassembly has first, second and third position, when the water conservancy diversion subassembly has different positions, this gasbag subassembly can realize aerifing, stop to aerify and the conversion of gassing stage. The power assembly auxiliary support has the advantages that the suspension height is variable, the loaded size is adjustable, and the height adjustment can be automatically completed according to the set load size, so that the generation of an over-constrained condition is avoided, and the stability of air pressure can be ensured under the short-time impact working condition.

Description

Power assembly auxiliary stay suspension

Technical Field

The application relates to the field of power assembly suspensions, in particular to a power assembly auxiliary support suspension.

Background

The powertrain suspension system refers to a component for connecting the powertrain and the frame, and generally adopts a six-point suspension system, which includes a powertrain front suspension (two), a powertrain rear suspension (two), and a powertrain auxiliary support suspension (two, generally bilaterally symmetric).

In the related art, after an auxiliary support suspension is added to a conventional four-point suspension system of a powertrain, a longer powertrain (such as a retarder) has good stability and high reliability.

However, after the number of suspensions is increased, after the power assembly falls on the frame assembly or in the running process of the vehicle, due to theoretical calculation errors, machining errors, assembly errors, suspension rigidity errors, frame dynamic deformation and the like, the phenomenon that some rubber suspension cushion is uncompressed or has insufficient compression amount, and one or more other rubber suspensions have large compression amount often occurs. This can result in some suspensions being unstressed or understressed, while others are overstressed. In this case, if the component with insufficient stress is forcibly fastened, the over-constraint may occur, and the suspension system with excessive stress may be damaged in advance, resulting in a shortened life. Therefore, it cannot be popularized and applied.

Disclosure of Invention

The embodiment of the application provides a power assembly auxiliary stay suspension to solve among the prior art because some suspensions in the six point suspension structure are not atress or atress is not enough, and other suspensions are then the atress too big, lead to producing the too big suspension system of atress to damage in advance, the problem of life-span shortening.

A powertrain accessory support suspension is provided, comprising:

the airbag assembly is provided with a first cavity, and the lower end of the airbag assembly is upwards sunken to form a first sunken area;

the buffer mechanism is arranged at the lower end of the air bag component, a second cavity is formed inside the buffer mechanism, and the second cavity is communicated with the outside;

the air inlet mechanism is arranged in the first sunken area and forms a third cavity with the inner side of the first sunken area in a surrounding manner, the air inlet mechanism is provided with an air inlet cavity, a flow guide assembly with an air inlet channel is arranged in the air inlet cavity, the flow guide assembly is provided with a first position, a second position and a third position, the air inlet channel is not communicated with the air inlet cavity when the air inlet mechanism is positioned at the first position, the air inlet cavity is communicated with the first cavity and the third cavity, and the air inlet channel is communicated with the air inlet cavity, the first cavity and the third cavity when the air inlet mechanism is positioned at the second position; when the second position is reached, the air inlet cavity is communicated with the first cavity, and the third cavity is communicated with the first cavity and the second cavity.

In some embodiments, the air intake mechanism includes an assembly support having a chamber therein to form the air intake chamber, the air intake chamber having open upper and lower ends.

In some embodiments, the flow guiding assembly comprises a crimping part, a first spring and a rod-shaped member, wherein the rod-shaped member can be lifted relative to the air inlet cavity, the first spring is arranged at the upper end of the crimping part and extends into the first concave area through an opening structure at the upper end of the air inlet cavity, the air inlet channel is opened in the rod-shaped member, the crimping part is arranged at the upper end of the rod-shaped member, and the upper end of the side wall of the rod-shaped member is provided with an opening which is communicated with the air inlet channel;

when the crimping part is positioned at the bottom end of the air inlet cavity, the position of the flow guide assembly is a first position, when the crimping part is positioned in the middle of the air inlet cavity, the position of the flow guide assembly is a second position, and when the crimping part is positioned at the top end of the air inlet cavity, the position of the flow guide assembly is a third position.

In some embodiments, the lower opening edge of the air inlet cavity extends downwards to form a limiting plate, the limiting plate encloses a vertical channel, and the rod-shaped member can lift and fall along the vertical channel; and the number of the first and second groups is,

the outer side walls of the assembly support and the limiting plate are circumferentially provided with retainers, and the circumferential outer side wall of each retainer is provided with a convex block which protrudes outwards along the radial direction.

In some embodiments, the gearbox further comprises a first fixing component fixedly connected with the gearbox bracket;

the first fixing component comprises a movable framework and a first screw rod inserted into the movable framework, and the upper end of the first screw rod is connected with the gearbox bracket;

the lower end of the first screw rod extends into the first cavity, a first fixing plate radially extends from the lower end of the first screw rod, and the first fixing plate is used for connecting the movable framework and the air bag assembly.

In some embodiments, the airbag module comprises an airbag and an airbag framework for supporting the airbag, the upper end of the airbag is provided with a notch, and the first fixing plate is located at the lower end of the notch and covers the notch.

In some embodiments, the upper side of the airbag is recessed downwards to form an annular second recessed area, the movable framework comprises a transverse plate at the upper end and a vertical plate at the lower end, the vertical plate is matched with the second recessed area, and the movable framework is provided with a threaded hole which is communicated with the transverse plate and the vertical plate.

In some embodiments, the airbag framework has a horizontal section and a vertical section, the horizontal section and the vertical section are enclosed to form a first recessed area, wherein the horizontal section is recessed downwards to form a counter bore, and a side wall forming the counter bore and the vertical section are enclosed to form a third recessed area;

the side wall of the assembly support is provided with a bulge outwards in the radial direction, a second spring is sleeved on the bulge, and the upper end of the second spring extends into the third concave area.

In some embodiments, the vehicle further comprises a second fixing component fixedly connected with the vehicle frame;

the second fixing component comprises a cover plate and a bolt for connecting the cover plate with the buffer mechanism, the cover plate is provided with air holes and connecting holes, and the rod-shaped piece penetrates through the connecting holes.

In some embodiments, the rod member includes a second screw and a nut screwed onto the second screw, the opening is disposed on an upper side wall of the second screw, an upper end of the second screw is fixedly connected to the crimping portion, and an upper end of the nut extends radially outward to form a second fixing plate, which can be used to cover the connecting hole.

The beneficial effect that technical scheme that this application provided brought includes: the embodiment of the application provides a power assembly auxiliary support suspension, which conveys gas into an air inlet cavity through an air inlet channel, the gas enters a first cavity, so that an air bag component can be jacked upwards, the pressure shared by the air bag component is larger at the moment, the pressure in the first cavity is also increased, when the pressure exceeds a certain value, the first cavity, a second cavity and a third cavity are communicated, so that the gas in the first cavity can be discharged in time, and then the pressure is reduced in time, when the power assembly auxiliary support suspension is subjected to short-time impact working condition load, at the moment, the first cavity, the second cavity and the third cavity are communicated firstly, the gas is discharged and reduced, along with continuous rapid impact, the first cavity is not communicated with the second cavity, and the gas discharge is suspended, so when the power assembly auxiliary support suspension is subjected to vertical downward impact instantly, the first cavity is deflated first and then is deflated, so that the relative stability of the air pressure in the first cavity is ensured. Therefore, the whole power assembly auxiliary support suspension controls the air bag to automatically inflate and deflate, the suspension automatically completes height adjustment in a certain range, manual adjustment is not needed, the adjusting process is more convenient and rapid, the working strength is reduced, the random strain capacity is improved, and the reliability is higher.

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 diagram of an internal structure of a powertrain auxiliary support suspension provided in an embodiment of the present application;

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

fig. 3 is a schematic perspective view of a cage according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a six-point suspension system in a connected state.

In the figure: 1. a first fixed component; 11. a movable framework; 111. a transverse plate; 112. a vertical plate; 113. a threaded hole; 12. a first screw; 13. a first fixing plate; 2. a second fixed component; 21. a cover plate; 22. a bolt; 23. connecting holes; 3. an airbag module; 31. an air bag; 32. an air bag framework; 33. a notch; 4. a first cavity; 5. a buffer mechanism; 6. a second cavity; 7. an air intake mechanism; 700. an assembly support; 710. a limiting plate; 720. a vertical channel; 8. an air inlet cavity; 9. an air intake passage; 10. a flow guide assembly; 100. a crimping part; 110. a rod-like member; 1101. a second screw; 1102. a nut; 1103. a second fixing plate; 20. a third cavity; 30. a holder; 40. a bump; 50. a second recessed region; 60. a first spring; 70. a second spring; 80. a first recessed region; 90. a third recessed region; a. the power assembly is suspended in front; a1, an engine assembly; b. the power assembly is suspended behind; b1, flywheel housing and clutch; c. a frame; d. a gearbox assembly.

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 powertrain suspension system refers to a component for connecting the powertrain and the frame, and generally adopts a six-point suspension system, which includes a powertrain front suspension a (two), a powertrain rear suspension b (two), and a powertrain auxiliary support suspension (two, generally bilaterally symmetric). The front suspension a of the power assembly is generally connected with an engine assembly a1, the rear suspension b of the power assembly is connected with a flywheel housing and a clutch b1, and the auxiliary support suspension of the power assembly is connected with a vehicle frame c and a gearbox assembly d.

The embodiment of the application provides a power assembly auxiliary stay suspension to because the suspension is not atress or the atress is not enough among the solution correlation technique, other suspensions then atress is too big, lead to producing the too big suspension system of atress to damage in advance, the problem of life-span shortening.

To solve the above technical problem, please refer to fig. 1-4, which provides a power assembly auxiliary support suspension, comprising an air bag component 3, a buffer mechanism 5 and an air intake mechanism 7, wherein the air bag component 3 has a first cavity 4, and the lower end of the air bag component 3 is recessed upwards to form a first recessed area 80; the buffer mechanism 5 is arranged at the lower end of the air bag component 3, a second cavity 6 is arranged inside the buffer mechanism 5, and the second cavity 6 is communicated with the outside; the air inlet mechanism 7 is arranged in the first recessed area 80 and encloses with the inner side of the first recessed area 80 to form a third cavity 20, the air inlet mechanism 7 is provided with an air inlet cavity 8, a flow guide assembly 10 with an air inlet channel 9 is arranged in the air inlet cavity 8, the flow guide assembly 10 is provided with a first position, a second position and a third position, when the air inlet mechanism is at the first position, the air inlet channel 9 is not communicated with the air inlet cavity 8, the air inlet cavity 8 is communicated with the first cavity 4 and the third cavity 20, and when the air inlet mechanism is at the second position, the air inlet channel 9 is communicated with the air inlet cavity 8, the first cavity 4 and the third cavity 20; when in the third position, the inlet chamber 8 is not in communication with the first cavity 4 and the third cavity 20 is in communication with the first cavity 4 and the second cavity 6.

In the embodiment of the application, a power assembly auxiliary support suspension is provided, which comprises an airbag component 3, a buffer mechanism 5 and an air inlet mechanism 7, wherein the buffer mechanism 5 can be made of a spring or rubber, the flow guide component 10 has a first position, a second position and a third position relative to the air inlet chamber 8, when the power assembly auxiliary support suspension is not in a working state, the flow guide component 10 is at the first position, the air inlet channel 9 is not communicated with the air inlet chamber 8, the air inlet channel 9 is communicated with the air inlet chamber 8, the first cavity 4 and the third cavity 20, when the power assembly auxiliary support suspension is in a working state, the flow guide component 10 is at the second position, the air inlet channel 9 is communicated with an external air supply device, and at the time, air is conveyed into the first cavity 4, so that the airbag component 3 can be lifted upwards, and as the airbag component 3 is lifted upwards, the power assembly gravity that the rear overhang portion bore has been shared, the auxiliary stay suspension atress grow, the increase of the pressure in first cavity 4 has been accelerated, make gasbag subassembly 3 have the downward motion state, make the pressure in first cavity 4 also grow, after atmospheric pressure further increases, make buffer gear 5's compressive capacity exceed certain numerical value after, water conservancy diversion subassembly 10 is in the third position this moment, admit air chamber 8 and first cavity 4 do not communicate, third cavity 20 communicates with first cavity 4 and second cavity 6, make the gas in first cavity 4 discharge to the external world through second cavity 6.

Because the air pressure is reduced after the air bag assembly 3 is deflated, the compression amount of the buffer mechanism 5 is reduced at the moment, the buffer mechanism 5 begins to rebound, the communication part of the second cavity 6 and the first cavity 4 is closed, the initially inflated state is restored at the moment, and the flow guide assembly 10 is located at the second position again. The circulation is performed in such a way that the flow guide assembly 10 is located at the third position, but the first cavity 4 and the second cavity 6 are not communicated in the critical state.

At the moment, the air pressure in the first cavity 4 tends to a stable state, so that the compression amount of the buffer mechanism 5 tends to a certain constant value under the normal steady-state working condition of the vehicle, and meanwhile, the stress stability of the whole auxiliary suspension system is ensured, and the compression amount also tends to a critical stress value.

Under the stable state, when the power assembly auxiliary support suspension bears the vertical downward impact instantaneously, the pressure in the first cavity 4 is rapidly increased instantaneously, at the moment, the whole air bag assembly 3 is rapidly descended, so that the flow guide assembly 10 is rapidly descended to the third position, at the moment, the air inlet cavity 8 is not communicated with the first cavity 4, the third cavity 20 is communicated with the first cavity 4 and the second cavity 6, the air is deflated and decompressed, then along with the continuous impact, at the moment, the whole air bag assembly 3 is continuously descended, the first concave area 80 is attached to the upper end of the air inlet mechanism 7, so that the third cavity 20 is not communicated with the first cavity 4, the deflation is suspended, therefore, when the power assembly auxiliary support suspension bears the vertical downward impact instantaneously, the deflation of the first cavity 4 is stopped after the short deflation, and the relative stability of the pressure in the first cavity 4 is ensured.

The power assembly auxiliary support suspension controls the air bag assembly to automatically inflate and deflate, the suspension automatically completes height adjustment in a certain range, manual adjustment is not needed, the adjustment process is more convenient and rapid, the working strength is reduced, the random strain capacity is improved, and the reliability is higher;

the pneumatic valve is formed by lifting the flow guide assembly 10 and the air inlet mechanism 7, can automatically sense the magnitude of the auxiliary suspension supporting force according to the compression amount of the buffer mechanism 5, continues to inflate when the predetermined compression amount is not reached, is closed to stop inflating after the predetermined compression amount is reached, and deflates when the predetermined compression amount is exceeded.

In this embodiment, the air intake mechanism 7 includes an assembly support 700, the assembly support 700 has a cavity therein to form the air intake chamber 8, and the upper end and the lower end of the air intake chamber 8 are open structures.

The upper end opening and the lower end opening correspond to each other, so that the air inlet chamber 8 can communicate with the first cavity 4, the second cavity 6 and the third cavity 20.

On the basis of the above embodiment, the flow guiding assembly 10 includes a crimping portion 100, a first spring 60 and a rod-shaped member 110 capable of moving up and down relative to the air intake chamber 8, the first spring 60 is disposed at an upper end of the crimping portion 100 and extends into the first recessed area 80 through an opening structure at the upper end of the air intake chamber 8, the air intake passage 9 is opened inside the rod-shaped member 110, the crimping portion 100 is disposed at the upper end of the rod-shaped member 110, and an opening is opened at an upper end of a side wall of the rod-shaped member 110, and the opening is communicated with the air intake passage 9;

when the press-fitting part 100 is located at the bottom end of the air intake cavity 8, the position of the flow guiding assembly 10 is a first position, when the press-fitting part 100 is located in the middle of the air intake cavity 8, the position of the flow guiding assembly 10 is a second position, and when the press-fitting part 100 is located at the top end of the air intake cavity 8, the position of the flow guiding assembly 10 is a third position.

In this embodiment, when the diversion assembly 10 is in the first position, the air inlet cavity 8 and the air inlet passage 9 need not be communicated, and when the diversion assembly 10 is in the third position, the air inlet cavity 8 and the first cavity 4 do not communicate, so that the sealing sleeve covers the crimping portion 100, and the sealing sleeve is also arranged at the opening at the upper end of the air inlet cavity 8, so that the first spring 60 is partially located in the sealing sleeve, and the first spring 60 can assist the airbag assembly 3 in supporting, thereby further improving the suspension supporting effect.

The guiding component 10 is located at the first, second and third positions respectively, mainly because the pressure inside the airbag component 3 changes, the assembly bracket 700 is lifted up and down relative to other components, so that the press-connection part 100 can be lifted up and down relative to the air inlet cavity 8, and secondly, the rod-shaped component 110 is moved up and down relative to other components to drive the press-connection part 100 to move up and down relatively in the air inlet cavity 8.

Furthermore, a limiting plate 710 extends downwards from the edge of the lower opening of the intake chamber 8, the limiting plate 710 encloses a vertical channel 720, and the rod 110 can move up and down along the vertical channel 720; and the outer side walls of the assembly bracket 700 and the limit plate 710 are circumferentially provided with a retainer 30, and the circumferential outer side wall of the retainer 30 is radially and outwardly convexly provided with a lug 40.

The lower end opening of air inlet chamber 8 is roughly circular, so this limiting plate 710 encloses and synthesizes a vertical passageway 720 also and is cylindricly, and rod-shaped spare 110 can go up and down along vertical passageway 720, refer to fig. 1-2, the lateral wall of assembly support 700 and limiting plate 710 is provided with holder 30 along circumference, holder 30 and lug 40's setting can make assembly support 700 and limiting plate 710, can not take place the skew when gasbag subassembly 3 goes up and down, consequently holder 30 mainly plays certain limiting displacement, and lug 40 generally is provided with four, be the annular setting, have the space that supplies the gas circulation between the adjacent lug 40, consequently holder 30 and lug 40 in this application can make assembly support 700 and limiting plate 710, can not take place the skew when gasbag subassembly 3 goes up and down, and can not influence gaseous circulation.

On the other hand, the auxiliary support suspension for the power assembly further comprises a first fixing component 1 fixedly connected with the gearbox bracket;

the first fixing component 1 comprises a movable framework 11 and a first screw 12 inserted into the movable framework 11, and the upper end of the first screw 12 is used for being connected with the gearbox bracket;

the lower end of the first screw 12 extends into the first cavity 4, and the lower end of the first screw 12 extends radially to form a first fixing plate 13, and the first fixing plate 13 is used for connecting the movable framework 11 and the airbag module 3.

Referring to fig. 1-2, the lower end of the first screw 12 extends into the first cavity 4, and the lower end of the first screw 12 extends radially to form a first fixing plate 13, that is, the movable framework 11 and the airbag module 3 are connected by the first fixing plate 13, in the actual implementation process, a sealing gasket and an airbag positioning gasket are further disposed in the airbag module 3, on one hand, the sealing property at the connection position between the airbag module 3 and the movable framework 11 is considered, and on the other hand, the airbag module 3 is prevented from lateral deviation in the lifting process.

The outer wall of the first screw 12 is provided with an external thread, the gearbox support is provided with an internal thread hole, and the first screw 12 is connected with the gearbox support in a threaded connection mode.

Further, the airbag module 3 includes an airbag 31 and an airbag frame 32 for supporting the airbag 31, the upper end of the airbag 31 is opened with a notch 33, the first fixing plate 13 is located at the lower end of the notch 33 and covers the notch 33, and a sealing pad and an airbag positioning pad are also disposed between the first fixing plate 13 and the notch 33.

The rising of the airbag module 3 is actually caused by the upward expansion of the airbag 31 to relatively jack up the first fixing module 1, and when the pressure of the first cavity 4 becomes higher, the falling of the airbag module 3 is actually caused by the downward relative movement of the airbag framework 32, and vice versa.

In the present application, the lower end of the airbag frame 32 is not only in direct contact with the cushioning mechanism 5, but the first recessed region 80 is also formed by the airbag frame 12 being recessed upward.

In some embodiments, the upper side of the airbag 31 is recessed downward to form an annular second recessed area 50, the movable frame 11 includes an upper horizontal plate 111 and a lower vertical plate 112, the vertical plate 112 is engaged with the second recessed area 50, and the movable frame 11 is provided with a threaded hole 113, and the threaded hole 113 communicates the horizontal plate 111 and the vertical plate 112.

Diaphragm 111 and riser 112 generally adopt casting structure as an organic whole, can make gasbag 31 and activity skeleton 11 gomphosis together through this design, riser 112 sets up moreover, has increased the degree of depth of screw hole 113, can make activity skeleton 11 and gearbox support fix together well, improves the firm effect of whole device.

In some embodiments, the bladder frame 32 has a horizontal section and a vertical section, which are enclosed to form a first recessed area 80, wherein the horizontal section is recessed downward to form a counter bore, and the side wall forming the counter bore and the vertical section are enclosed to form a third recessed area;

the side wall of the assembly bracket 700 is provided with a protrusion radially outward, the protrusion is sleeved with a second spring 70, and the upper end of the second spring 70 extends into the third recessed area.

In this embodiment, the lower end of the vertical section further extends into the first recessed area 80 to form a support plate, which is used to support the assembly bracket 700, and when the assembly bracket 700 is separated from the support plate, the second cavity 6 is communicated with the third cavity 80, and when the assembly bracket 700 is attached to the support plate, the second cavity 6 is not communicated with the third cavity 80.

Further, the bicycle frame further comprises a second fixing component 2 fixedly connected with the bicycle frame c;

the second fixing component 2 comprises a cover plate 21 and a bolt 22 for connecting the cover plate 21 with the buffer mechanism 5, the cover plate 21 is provided with an air hole and a connecting hole 23, and the rod-shaped member 110 penetrates through the connecting hole 23.

The second cavity 6 is communicated with the outside through the air holes, and the cover plate 21 is fixed on the frame c through the bolts 22, so that when the whole power assembly auxiliary support suspension is impacted, the position of the cover plate 21 is unchanged relative to the frame c.

On the basis of the above embodiment, the rod 110 includes a second screw 1101 and a nut 1102 spirally sleeved on the second screw 1101, the opening is disposed on an upper side wall of the second screw 1101, an upper end of the second screw 1101 is fixedly connected to the crimping part 100, an upper end of the nut 1102 extends radially outward to form a second fixing plate 1103, and the second fixing plate 1103 can be used to cover the connecting hole 23.

The lower end of the second screw 1101 is connected to the air supply joint, and the position of the cover plate 21 does not change, so that when the nut 1102 is rotated, the second screw 1101 can be lifted, and the crimping part 100 is driven to move up and down in the air intake chamber 8.

In order to prevent the air inlet chamber 8 from communicating with the second cavity 6, a sealing ring is arranged on the side wall of the rod-shaped member 110, and the sealing ring can prevent air in the air inlet chamber 8 from leaking along the vertical channel 720 from two sides of the second screw 1101.

The embodiment of the application provides a power assembly auxiliary support suspension, which can adjust the compression amount of a buffer mechanism 5 when a flow guide component 10 is located at the third position by rotating a nut 1102, so that the critical stress value of the whole auxiliary support is indirectly adjusted; in a working state, gas is conveyed into the gas inlet cavity 8 through the gas inlet channel 9 and enters the first cavity 4, so that the first fixing component 1 on the upper part of the airbag component 3 can be jacked upwards to share a part of gravity load of the power assembly born by the rear suspension, the airbag component 3 jacks upwards, the shared pressure is higher, the pressure in the first cavity 4 is higher, when the pressure exceeds the critical stress value, the flow guide component 10 is positioned at the third position, and the first cavity 4, the second cavity 6 and the third cavity 20 are communicated, so that the gas in the first cavity 4 can be discharged in time, and the pressure can be reduced in time; when short-time impact working condition load is applied, at the moment, the first cavity 4, the second cavity 6 and the third cavity 20 are communicated firstly, gas emission is carried out, pressure is reduced, rapid impact continues, at the moment, the transverse section of the airbag framework 32 is pressed at the upper end of the assembly bracket 700, and the first cavity 4 is not communicated with the third cavity 20. Thus ensuring a relatively constant air pressure in the first cavity 4. After the short-time impact working condition load disappears, the buffer mechanism recovers to the original state, the communication position of the second cavity 6 and the third cavity 20 is closed, the second cavity 6 is communicated with the first cavity 4, air is introduced through the air inlet mechanism 7 again, and the original state is recovered. Therefore, the air bags are controlled to automatically inflate and deflate during the whole power assembly auxiliary support suspension work process, and the critical stress value can be increased or decreased by appropriately rotating the nut 1102. The power assembly auxiliary support has the advantages of variable suspension height and adjustable load. Can be according to the critical stress value size of setting for accomplish altitude mixture control in certain extent automatically, need not manual regulation, altitude mixture control process is convenient more, rapid to avoided the production of the overconstrained condition, simultaneously, reduced working strength, increased the ability of random meeting an emergency, the reliability is higher, in addition, also can guarantee that atmospheric pressure is stable under the short-term impact condition.

The working principle of the application is as follows:

when the power assembly auxiliary support suspension starts to work, the nut 1102 is rotated appropriately, so that the second screw 1101 moves upwards relative to the assembly support 700, the crimping part 100 is located in the middle of the air inlet cavity 8, the air inlet channel 9 is communicated with the air inlet cavity 8, the first cavity 4 and the third cavity 20, the air inlet channel 9 is communicated with an external air supply device, and at this time, air is conveyed into the first cavity 4, so that the first fixing component 1 on the upper portion of the air bag component 3 can be jacked upwards, because the first fixing component 1 jacks upwards, the power assembly gravity borne by the rear suspension part is shared, the auxiliary support suspension is stressed to be increased, the increase of the pressure in the first cavity 4 is accelerated, the buffer mechanism 5 is stressed to deform and contract, the air bag framework 32 on the buffer mechanism 5 moves downwards relative to the cover plate 21, and when the gap between the upper end face of the cover plate 18 and the lower end face of the second fixing plate 1103 is zero, the second screw 1101 is fixed relative to the cover plate 21, and in order to keep the deformation of the two transmission paths consistent, the first spring 60 is compressed and deformed, and the air bag framework 32 and the assembly bracket 70 move downward relative to the second screw 1101, and at this time, the crimping part 100 is farther from the bottom of the air intake cavity 8 and closer to the top of the air intake cavity 8.

The two transmission paths are mainly that the air bag framework 32 applies the pressure in the first cavity 4 to the cover plate 21 through two routes, namely: the airbag framework 32-the buffer mechanism 5-the cover plate 21; the second route is as follows: air bag skeleton 32-first spring 60-second screw 1101-nut 1102-cover plate 21.

When the air pressure in the first cavity 4 is further increased until the compression amount of the buffer mechanism 5 exceeds a certain value, the crimping part 100 is located at the top end of the air inlet cavity 8, the air inlet cavity 8 is not communicated with the first cavity 4, the assembly support 700 is separated from the airbag framework 32, and at the moment, the air in the first cavity 4 is discharged to the outside through the third cavity 20, the second cavity 6 and the air holes.

Because the air pressure is reduced after the air bag component 3 is deflated, the compression amount of the buffer mechanism 5 is reduced at the moment, the buffer mechanism 5 begins to rebound, the communication position between the second cavity 6 and the first cavity 4 is closed, the air bag component recovers to the initial inflation state at the moment, namely, the guide component 10 is positioned at the second position again, and the circulation is repeated, so that the guide component 10 is close to the third position, but the critical state that the first cavity 4 and the second cavity 6 are not communicated at the moment, namely, the crimping part 100 is close to the top end of the air inlet cavity 8, but the assembly support 700 and the air bag framework 32 are still in the critical state of the unseparated state.

At the moment, the air pressure in the first cavity 4 tends to a stable state, so that the compression amount of the buffer mechanism 5 tends to a certain constant value under the normal steady-state working condition of the vehicle, and meanwhile, the stress stability of the whole auxiliary suspension system is ensured, and the stress value also tends to a critical stress value.

At the moment, the whole auxiliary support suspension is stably stressed, the nut 1102 is properly rotated, so that the flow guide assembly 10 is positioned at a third position, namely the crimping part 100 is positioned at the top end of the air inlet cavity 8, at the moment, the air inlet cavity 8 is not communicated with the first cavity 4, at the moment, the third cavity 20 is communicated with the first cavity 4 and the second cavity 6, so that the first cavity 4 is in an exhaust state, the air pressure in the first cavity 4 is reduced, the whole air bag assembly 3 has a downward movement trend, at the moment, part of the auxiliary support suspension is stressed and shared by the power assembly rear suspension, at the moment, the pressure borne by the whole air bag assembly 3 is gradually reduced, the compression amount of the buffer mechanism 5 is reduced, the buffer mechanism 5 and the air bag assembly 3 have an upward movement trend, at the moment, the air bag framework 32 moves upward relative to the cover plate 21, so that the assembly bracket 700 is attached to the air bag framework 32, so that the first cavity 4 is not communicated with the second cavity 6, thereby entering a new equilibrium state where the amount of compression of the damping mechanism 5 is reduced compared to before the nut 1102 is turned, and thus the overall secondary support suspension is stressed less and tends to another stable state. Thus, the critical force value of the suspension system becomes smaller after the nut 1102 is rotated. The stress state in the suspension stable state can be adjusted by rotating the nut 1102.

In the stable state of the auxiliary support suspension under stress, the nut 1102 is rotated in a proper reverse direction, so that the second screw 1101 moves downwards relative to the nut 1102 under the action of the spring 60, the air inlet cavity 8 is communicated with the first cavity 4, the assembly bracket 700 is attached to the air bag framework 32, and the second cavity 6 is communicated with the third cavity 20. The compressed air sequentially passes through the air inlet channel 9, the air inlet cavity 8 and the third cavity 20 and finally enters the first cavity 4, so that the pressure in the air bag 31 is gradually increased. Meanwhile, the movable framework 11 moves upwards, and the auxiliary support suspension bears part of the stress of the rear suspension of the power assembly. At this time, the pressure in the airbag 31 gradually increases, so that the airbag frame 32 and the assembly bracket 700 are pressed to move downward relative to the cover plate 21 until the press-connecting part 100 is located at the top end of the air inlet cavity 8, and the air inlet cavity 8 is not communicated with the first cavity 4, thereby entering a new equilibrium state. At this time, the compression amount of the buffer mechanism 5 is increased compared with that before the nut 1102 is screwed, so that the whole auxiliary support suspension is subjected to an increased force and tends to another stable state again. Thus, the critical force value of the suspension system becomes large after counter-rotating the nut 1102. The stress state in the suspension stable state can be adjusted by rotating the nut 1102.

Under stable state, when the power assembly auxiliary support suspension bears vertical downward impact instantaneously, the pressure in the first cavity 4 is rapidly increased instantaneously, at this moment, the whole air bag assembly 3 is rapidly lowered, so that the flow guide assembly 10 is rapidly moved to the third position, at this moment, the air inlet cavity 8 is not communicated with the first cavity 4, the third cavity 20 is communicated with the first cavity 4 and the second cavity 6, deflation is started, pressure reduction is realized, then along with continuous impact, at this moment, the whole air bag assembly 3 is continuously lowered, the first concave area 80 is attached to the upper end of the air inlet mechanism 7, so that the third cavity 20 is not communicated with the first cavity 4, deflation is suspended, therefore, when the power assembly auxiliary support suspension bears vertical downward impact instantaneously, the first cavity 4 is deflated first and then is stopped, and the relative stability of the air pressure in the first cavity 4 is ensured.

In a stable state, when the auxiliary support bears the instantaneous vertical downward impact of the gearbox, the pressure in the first cavity 4 is instantaneously and rapidly increased, the pressure in the first cavity 4 pushes the air bag framework 32 to move downwards relative to the cover plate 18, and at the moment, the second screw 1101 and the assembly support 700 are fixed relative to the cover plate 21, so that the assembly support 700 is rapidly separated from the air bag framework 32, the gas in the first cavity 4 is discharged into the second cavity 6 through the third cavity 20, the pressure relief is completed, then along with the continuous rapid impact, the transverse section of the air bag framework 32 is pressed on the assembly support 700 at the moment, the first cavity 4 is separated from the third cavity 20, and the two cavities are not communicated. Thus ensuring a relatively constant air pressure in the first cavity 4.

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 the case may be.

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. A powertrain accessory support suspension, comprising:

the air bag component (3), the air bag component (3) is provided with a first cavity (4), and the lower end of the air bag component (3) is upwards recessed with a first recessed area (80);

the buffer mechanism (5) is arranged at the lower end of the air bag component (3), a second cavity (6) is formed in the buffer mechanism (5), and the second cavity (6) is communicated with the outside;

the air inlet mechanism (7) is arranged in the first recessed area (80) and encloses with the inner side of the first recessed area (80) to form a third cavity (20), the air inlet mechanism (7) is provided with an air inlet cavity (8), a flow guide assembly (10) with an air inlet channel (9) is arranged in the air inlet cavity (8), the flow guide assembly (10) is provided with a first position, a second position and a third position, when the air inlet mechanism is positioned at the first position, the air inlet channel (9) is not communicated with the air inlet cavity (8), the air inlet cavity (8) is communicated with the first cavity (4) and the third cavity (20), and when the air inlet mechanism is positioned at the second position, the air inlet channel (9) is communicated with the air inlet cavity (8), the first cavity (4) and the third cavity (20); when in the third position, the air inlet cavity (8) is not communicated with the first cavity (4), and the third cavity (20) is communicated with the first cavity (4) and the second cavity (6).

2. The powertrain accessory support suspension of claim 1, wherein:

the air inlet mechanism (7) comprises an assembly support (700), a cavity is formed in the assembly support (700) to form the air inlet cavity (8), and the upper end and the lower end of the air inlet cavity (8) are of an open structure.

3. The powertrain accessory support suspension of claim 2, wherein: the flow guide assembly (10) comprises a crimping part (100), a first spring (60) and a rod-shaped part (110) which can lift relative to the air inlet cavity (8), wherein the first spring (60) is arranged at the upper end of the crimping part (100) and extends into a first concave area (80) through an opening structure at the upper end of the air inlet cavity (8), the air inlet channel (9) is arranged inside the rod-shaped part (110), the crimping part (100) is arranged at the upper end of the rod-shaped part (110), and an opening is formed in the upper end of the side wall of the rod-shaped part (110) and communicated with the air inlet channel (9);

when the crimping part (100) is located at the bottom end of the air inlet cavity (8), the position of the flow guide assembly (10) is a first position, when the crimping part (100) is located in the middle of the air inlet cavity (8), the position of the flow guide assembly (10) is a second position, and when the crimping part (100) is located at the top end of the air inlet cavity (8), the position of the flow guide assembly (10) is a third position.

4. The powertrain accessory support suspension of claim 3, wherein: a limiting plate (710) extends downwards from the edge of the lower end opening of the air inlet cavity (8), the limiting plate (710) encloses a vertical channel (720), and the rod-shaped part (110) can lift along the vertical channel (720); and the number of the first and second electrodes,

the outer side walls of the assembly bracket (700) and the limiting plate (710) are circumferentially provided with a retainer (30), and the circumferential outer side wall of the retainer (30) is provided with a convex block (40) in a protruding mode along the radial direction.

5. The powertrain accessory support suspension of claim 2, wherein: the gearbox is characterized by also comprising a first fixing component (1) fixedly connected with the gearbox bracket;

the first fixing component (1) comprises a movable framework (11) and a first screw (12) of the movable framework (11), and the upper end of the first screw (12) is used for being connected with the gearbox support;

the lower end of the first screw rod (12) extends into the first cavity (4), a first fixing plate (13) radially extends from the lower end of the first screw rod (12), and the first fixing plate (13) is used for connecting the movable framework (11) and the air bag assembly (3).

6. The powertrain accessory support suspension of claim 5, wherein: the air bag assembly (3) comprises an air bag (31) and an air bag framework (32) used for supporting the air bag (31), a notch (33) is formed in the upper end of the air bag (31), and the first fixing plate (13) is located at the lower end of the notch (33) and covers the notch (33).

7. The powertrain accessory support suspension of claim 6, wherein: the upper side of the air bag (31) is downwards sunken to form an annular second sunken area (50), the movable framework (11) comprises a transverse plate (111) at the upper end and a vertical plate (112) at the lower end, the vertical plate (112) is matched with the second sunken area (50), a threaded hole (113) is formed in the movable framework (11), and the transverse plate (111) and the vertical plate (112) are communicated with the threaded hole (113).

8. The powertrain accessory support suspension of claim 6, wherein: the air bag framework (32) is provided with a transverse section and a vertical section, and the transverse section and the vertical section are enclosed to form a first recessed area (80), wherein the transverse section is recessed downwards to form a counter bore, and the side wall of the counter bore and the vertical section are enclosed to form a third recessed area;

the side wall of the assembly bracket (700) is provided with a bulge outwards in the radial direction, a second spring (70) is sleeved on the bulge, and the upper end of the second spring (70) extends into the third concave area.

9. The powertrain secondary support suspension of claim 3, wherein: the bicycle frame further comprises a second fixing component (2) fixedly connected with the bicycle frame (c);

the second fixing component (2) comprises a cover plate (21) and a bolt (22) for connecting the cover plate (21) with the buffer mechanism (5), an air hole and a connecting hole (23) are formed in the cover plate (21), and the rod-shaped piece (110) penetrates through the connecting hole (23).

10. The powertrain accessory support suspension of claim 9, wherein: the rod-shaped element (110) comprises a second screw (1101) and a nut (1102) spirally sleeved on the second screw (1101), the opening is formed in the upper side wall of the second screw (1101), the upper end of the second screw (1101) is fixedly connected with the crimping part (100), a second fixing plate (1103) extends outwards in the radial direction from the upper end of the nut (1102), and the second fixing plate (1103) can be used for covering the connecting hole (23).