CN115539566A - Radial variable stiffness adjusting method and device of spherical hinge for suspension vibration reduction - Google Patents
Radial variable stiffness adjusting method and device of spherical hinge for suspension vibration reduction Download PDFInfo
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- CN115539566A CN115539566A CN202211143413.6A CN202211143413A CN115539566A CN 115539566 A CN115539566 A CN 115539566A CN 202211143413 A CN202211143413 A CN 202211143413A CN 115539566 A CN115539566 A CN 115539566A
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- spherical hinge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
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- Aviation & Aerospace Engineering (AREA)
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Abstract
A suspension damping spherical hinge radial variable stiffness adjusting method and device, the suspension damping spherical hinge includes a jacket, a core shaft, an elastic body, the jacket and the core shaft are formed by the elastic body through integral hot vulcanization, forming the suspension damping spherical hinge; the limiting baffle ring is arranged on one side of the spherical hinge for suspension vibration reduction, and the limiting gasket is arranged on the other side of the spherical hinge for suspension vibration reduction, so that when the spherical hinge for suspension vibration reduction is subjected to radial acting force, the limiting baffle ring and the limiting gasket can block deformation generated by the elastic body, and the spherical hinge for suspension vibration reduction generates variable rigidity in the radial direction. The invention adopts the matching of the limit baffle ring and the spherical hinge sleeve for suspension vibration reduction, and can carry out twice rigidity-variable adjustment in the radial direction, thereby greatly improving the vibration reduction and limit effects of the system; the device and the spherical hinge have the advantages of simple structure, lower cost, higher reliability and convenient installation.
Description
Technical Field
The invention relates to variable stiffness adjustment of an elastic spherical hinge, in particular to a radial variable stiffness adjustment method of a spherical hinge for suspension vibration reduction; the radial variable stiffness adjusting method and the limiting device of the spherical hinge for suspension vibration reduction can effectively solve the problem of overload limiting of the spherical hinge for suspension vibration reduction; belongs to the technical field of rubber metal composite element manufacture.
Background
The rubber metal spherical hinge is widely applied to various suspension structures of engines of automobiles, airplanes, rockets and the like, and energy transfer between the engines and other vibration sources is greatly reduced by means of the high damping and low rigidity characteristics of rubber in the spherical hinge. However, when automobiles, airplanes, rockets and the like do various motions such as acceleration, deceleration, turning and the like, the spherical hinge for vibration reduction of the engine device is subjected to loads in various directions, and if the spherical hinge for vibration reduction is subjected to limited loads exceeding the design of the spherical hinge for vibration reduction or the vibration reducer is excited by other vibration sources at the natural frequency of the spherical hinge for vibration reduction to generate high-power resonance, the spherical hinge for vibration reduction is easily extruded excessively and deformed to generate rubber cracking or degumming, so that the reliability of a vibration reduction installation system is influenced; particularly, for the spherical hinge for suspension vibration reduction, a suspension structure is adopted, and the available limiting mode is very limited, so that the existing common spherical hinge for suspension vibration reduction is lack of the limiting function during overload, which brings very adverse effects to the application of the spherical hinge for suspension vibration reduction, and therefore, the spherical hinge for suspension vibration reduction with the limiting protection function needs to be developed.
Patent documents in which the same technology as that of the present invention is not found through patent search are reported, and the following patents which have a certain relationship with the present invention are mainly included:
1. the application number is CN200820065713.6, the name is "automobile transmission's ball-hinged auxiliary suspension mechanism", the applicant is the chinese utility model patent of east wind commercial car limited company, and this patent discloses an automobile transmission's ball-hinged auxiliary suspension mechanism, including the connecting rod, the upper and lower both ends of connecting rod are provided with ball pivot and lower ball pivot respectively, and the ball pivot center of going up ball pivot and ball pivot down all is equipped with the through-hole, and the one end of going up ball pivot and cushion bracket all articulates on bracket bolt is vice, and the one end of ball pivot and linking bridge all articulates on bracket bolt is vice down, and the other end and the frame crossbeam of cushion bracket are connected, and the other end and the gearbox of linking bridge are connected.
2. The application number is CN200910044564.4, the name is "rubber metal ball hinge with hard stop at end face", the application is Chinese invention patent of New Material science and technology limited company in the period of Zhou, the patent discloses a radial limiting device and a device of ball hinge, the hard stop is placed at the end face of a mandrel, after the ball hinge is manufactured, the hard stop is installed on the two end faces of an elastic damping part of the mandrel of the ball hinge through fasteners, and a radial gap is ensured to be left between the top of the hard stop and an outer sleeve of the elastic damping part, when the outer sleeve of the elastic damping part moves radially relative to the hard stop and exceeds the gap, the hard stop is limited. The spherical hinge comprises a mandrel and an elastic vibration damping part; the elastic vibration damping part is a rubber metal composite element formed by compounding a metal outer sleeve, a metal inner sleeve, an interlayer and elastic rubber, the rubber part, the metal outer sleeve and the metal inner sleeve are integrally vulcanized together, the inner surface of the end of the outer sleeve of the elastic part is provided with a spherical hinge radial hard stop, the spherical hinge radial hard stop is arranged on two end surfaces of the mandrel close to the elastic vibration damping part, and a gap is formed between the spherical hinge radial hard stop and the inner surface of the outer sleeve of the elastic part.
3. The application number is CN201710365421.8, named as 'engine mounting device', the application is Chinese invention patent of Zhejiang zero-run science and technology Limited company, and the patent discloses an engine mounting device, which comprises: a shock absorbing member; the engine mount device further includes: the shock absorption device comprises a shock absorption barrel body sleeved outside an elastic shock absorption piece, two side shock absorption pads which are used for sealing two ends of the shock absorption piece and two ends of the shock absorption barrel body in a one-to-one correspondence manner, suspension shafts which penetrate through the shock absorption piece and the side shock absorption pads, and a connecting frame which is arranged on the side wall of the shock absorption barrel body; the middle parts of the two lower ends are provided with transverse connecting beams of connecting lugs; the connecting lugs press the outer sides of the side shock absorption pads in a one-to-one correspondence manner and are connected with the suspension shaft; the axis of the suspension shaft is parallel to the length direction of the transverse connecting beam. When the engine suspension device is used, the transverse connecting beam is connected with a frame of an automobile, and the connecting frame is connected with an engine.
Through careful analysis of the above patents, although some patents have proposed some improved methods and structures for suspension devices and some improved technical solutions for ball joints, through careful analysis, these patents still lack multiple stiffness adjustment and overload limit control for suspension ball joints, and therefore the above-mentioned problems still exist, and further research and improvement are needed.
Disclosure of Invention
The invention aims to provide a damping spherical hinge capable of simultaneously carrying out radial variable stiffness adjustment aiming at the poor damping and limiting effects in the radial direction of the existing spherical hinge for suspension damping.
In order to achieve the purpose, the invention provides a radial variable stiffness adjusting method of a spherical hinge for suspension vibration reduction, wherein the spherical hinge for suspension vibration reduction comprises an outer sleeve, a core shaft and an elastic body, and the outer sleeve and the core shaft are integrally formed by hot vulcanization through the elastic body to form the spherical hinge for suspension vibration reduction; the limiting baffle ring is arranged on one side of the spherical hinge for suspension vibration reduction, and the limiting gasket is arranged on the other side of the spherical hinge for suspension vibration reduction, so that when the spherical hinge for suspension vibration reduction is subjected to radial acting force, the limiting baffle ring and the limiting gasket can block deformation generated by the elastic body, and the spherical hinge for suspension vibration reduction generates variable rigidity in the radial direction.
Preferably, the limit stop ring comprises a side limit surface and an upper end surface, the side limit surface is arranged on the inner side of the limit stop ring in the axial direction, the upper end surface is arranged on the outer side of the limit stop ring in the radial direction, and cambered surfaces are arranged on two sides of the elastic body in the axial direction; when the suspension damping spherical hinge is subjected to radial acting force, the cambered surface close to one side of the limiting stop ring deforms, so that the cambered surface of the elastic body bulges outwards; when the bulged cambered surface is propped against the side limiting surface, the limiting stop ring can prevent the elastomer from further deforming.
Preferably, the limiting gasket comprises a side stopping surface and a top surface, the side stopping surface is arranged on the inner side of the limiting gasket in the axial direction, and the top surface is arranged on the outer side of the limiting gasket in the radial direction; when the suspension damping spherical hinge is subjected to radial acting force, the cambered surface close to one side of the limiting gasket is also deformed, so that the cambered surface of the elastic body bulges outwards; when the bulged cambered surface is propped against the side stop surface, the limiting gasket can prevent the elastic body from further deforming.
Preferably, when the suspension damping ball hinge bears gradually-increased radial pressure and the bulged cambered surface is abutted to the side limiting surface and the side stopping surface, the deformation of the elastic body is blocked by the limiting blocking ring and the limiting gasket, so that the radial rigidity of the suspension damping ball hinge is increased suddenly, and the first rigidity change of the suspension damping ball hinge in the radial direction is realized.
Preferably, the deformation degree of the elastic body in the radial direction when the bulged arc surface is abutted against the side stop surface is adjusted by changing the distance between the side stop surface and the arc surface in the axial direction; and adjusting the deformation degree of the elastic body in the radial direction when the bulged cambered surface is abutted against the side limiting surface by changing the distance between the side limiting surface and the cambered surface in the axial direction, thereby adjusting the inflection point of the first radial variable stiffness generated by the spherical hinge for suspension vibration reduction.
Preferably, after the arc surface is abutted against the side limiting surface and the side stopping surface, along with the gradual increase of the radial pressure of the spherical hinge for suspension vibration reduction, the outer sleeve and the mounting seat gradually approach the mandrel along the radial direction until the outer sleeve is abutted against the upper end surface of the limiting stop ring or the top surface of the limiting gasket, or the mounting seat is abutted against the upper end surface of the limiting stop ring or the top surface of the limiting gasket, so that the spherical hinge for suspension vibration reduction generates second variable stiffness in the radial direction.
Preferably, the inflection point of the second radial variable stiffness generated by the spherical hinge for suspension and vibration reduction is adjusted by adjusting the distance between the outer sleeve and the upper end surface of the limit baffle ring or the distance between the outer sleeve and the top surface of the limit gasket.
A radial variable stiffness adjusting device of a spherical hinge for suspension vibration reduction comprises an outer sleeve, a core shaft and an elastic body, wherein the core shaft is hollowed, and the outer sleeve and the core shaft are integrally formed by hot vulcanization through the elastic body to form the spherical hinge for suspension vibration reduction; the radial variable stiffness adjusting device comprises a long bolt, a limiting device and a fixed support, the fixed support is sleeved on the mandrel, the mandrel is sleeved on the long bolt, and the limiting device is installed on the long bolt or the mandrel.
Preferably, the limiting device comprises a limiting stop ring and a limiting gasket, the long bolt comprises a bolt head and a bolt rod, and the bolt head and the bolt rod are connected into a whole in a seamless mode; the limiting stop ring is arranged on the bolt rod and is arranged between the bolt head and the mandrel; spacing gasket is installed on the dabber, and spacing gasket setting is between elastomer and fixing support.
Preferably, the radial variable stiffness adjusting device further comprises a gasket and a nut, the gasket comprises a first gasket and a second gasket, and the nut comprises a first nut and a second nut; the first gasket is arranged between the fixed support and the first nut, and the second gasket is arranged between the mandrel and the second nut.
The invention has the advantages that: the invention adopts the matching of the limit baffle ring and the limit gasket with the spherical hinge sleeve for suspension vibration reduction, and can carry out twice rigidity-variable adjustment in the radial direction, thereby greatly improving the vibration reduction and limit effects of the system; the device and the spherical hinge have the advantages of simple structure, lower cost, higher reliability and convenient installation.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention;
FIG. 2 is an enlarged, partially cross-sectional, schematic view of a retainer ring;
FIG. 3 is an enlarged, fragmentary cross-sectional view of a spacing shim;
in the figure: the bolt comprises a bolt head 11, a bolt rod 12, a limit stop ring 2, a side limit surface 21, an upper end surface 22, a limit gasket 3, a step 31, a side stop surface 32, a top surface 33, a first gasket 41, a second gasket 42, a first nut 51, a second nut 52, an outer sleeve 61, an elastic body 62, a mandrel 63, a mounting seat 7, a fixed support 8 and an adjusting gasket 91.
Detailed Description
The invention is further described with reference to the following examples and figures:
example one
The spherical hinge for suspension vibration damping of the present embodiment is a vibration damping spherical hinge applied to an aircraft, and as shown in fig. 1, the spherical hinge for suspension vibration damping includes a casing 61, a core shaft 63, and an elastic body 62, the casing 61 and the core shaft 63 are integrally formed by hot vulcanization of the elastic body 62, and the elastic body 62 and the casing 61 are disposed at a front end of the core shaft 63. The mandrel 63 is mounted on the fixed support 8 of the aircraft and the outer sleeve 61 is mounted on the mounting 7.
The washer includes a first washer 41 and a second washer 42, and the nut includes a first nut 51 and a second nut 52. Spacing fender ring 2, spacing gasket 3, adjusting shim 91, dabber 63, gasket and fixing support 8 all open the mounting hole that has a perfect understanding, and stop device includes spacing fender ring 2 and spacing gasket 3, and the installation step of whole device is: firstly, sequentially sleeving a limit stop ring 2, an adjusting gasket 91 and a spherical hinge on a bolt rod 12 of a long bolt, sleeving a limit gasket 3 on a mandrel 63, penetrating the mandrel 63 through a mounting hole in a fixed support 8, then mounting a first gasket 41 and a first nut 51 at the rear end of the mandrel 63, and screwing the first nut 51; then, the second washer 42 and the second nut 52 are mounted on the rear end of the long bolt, the second nut 52 is tightened, and then the outer sleeve 61 of the spherical hinge for suspension damping is mounted and fixed on the mounting base 7.
The long bolt comprises a bolt head 11 and a bolt rod 12, wherein one end of the bolt rod 12 close to the bolt head 11 is a polished rod, and one end of the bolt rod 12 far away from the bolt head 11 is a threaded rod. The limiting stop ring 2 and a mandrel 63 of the spherical hinge are sleeved on the polished rod of the bolt rod 12, the second gasket 42 and the second nut 52 are installed on the threaded rod of the bolt rod 12, and the limiting stop ring 2 is installed between the mandrel 63 and the bolt head 11. And (3) screwing the second nut 52 on the long bolt, so that the second nut 52 sequentially compresses the gasket, the mandrel 63, the adjusting gasket 91 and the limit baffle ring 2. And (3) tightening the first nut 51 on the mandrel 63, so that the first nut 51 sequentially presses the first gasket 41 and the limiting gasket 3 on the fixed support 8.
Spacing fender ring 2 of spacing fender ring 2 is including side spacing face 21 and up end 22, and the one end of dabber 63 is provided with the ladder, and the front end of spacing gasket 3 is provided with step 31, and the ladder shape and the size of 3 steps 31 of spacing gasket and dabber 63 all match, and after screwing up first nut 51, the step 31 of spacing gasket 3 pushes up mutually with the ladder of dabber 63, and the rear end of spacing gasket 3 pushes up mutually with fixing support 8.
Cambered surfaces are arranged on two sides of the elastic body 62, and when the suspension damping ball joint is subjected to radial acting force, the cambered surfaces on the two sides of the elastic body 62 are bulged outwards. The bulge of the elastic body 62 on one side will abut against the side limiting surface 21 of the limit stop ring 2, and the limit stop ring 2 will prevent the elastic body 62 from further deformation. The elastic body 62 on the other side bulges and is abutted against the side stop surface 32 of the limit gasket 3, and the limit gasket 3 also prevents the elastic body 62 from further deforming. The deformation of the elastic body 62 is blocked by the limiting stop ring 2 and the limiting gasket 3, so that the radial rigidity of the spherical hinge for suspension vibration reduction is increased suddenly, and the first rigidity change of the spherical hinge for suspension vibration reduction in the radial direction is realized.
By changing the distance between the side stop surface 32 and the arc surface in the axial direction, the deformation degree of the elastic body 62 in the radial direction when the bulged arc surface is abutted against the side stop surface 32 can be adjusted, so that the rigidity value of the spherical hinge for suspension vibration reduction before the first time of rigidity change is adjusted. The larger the distance between the side stop surface 32 and the arc surface in the axial direction is, the larger the rigidity value of the suspension damping ball hinge is, and the first variable rigidity is generated. Similarly, the deformation degree of the elastic body 62 in the radial direction when the bulged arc surface abuts against the side limiting surface 21 is adjusted by changing the distance between the side limiting surface 21 and the arc surface in the axial direction. Therefore, the distance between the side stop surface 32 and the cambered surface can be adjusted to control how much radial rigidity the spherical hinge has, and then the first radial rigidity variation is generated. Therefore, by changing the distance between the side stop surface 32 and the cambered surface in the axial direction and changing the distance between the side limiting surface 21 and the cambered surface in the axial direction, the inflection point of the first radial stiffness change of the suspension damping ball joint can be adjusted. In this embodiment, the outer diameters of the limit stop ring 2 and the limit gasket 3 are the same, the axial distances between the limit surface 21 on the side of the limit stop ring 2 and the limit surface 32 on the side of the limit gasket 3 are respectively equal to the axial distances between the adjacent arc surfaces of the elastic bodies 62, and the radial distances between the upper end surface 22 of the limit stop ring 2 and the top surface 33 of the limit gasket 3 are respectively equal to the radial distances between the outer sleeve 61 and the mounting seat 7.
After the cambered surface is abutted against the side stop surface 32, along with the gradual increase of the radial pressure of the spherical hinge for suspension vibration reduction, the outer sleeve 61 gradually approaches the core shaft 63 along the radial direction until the outer sleeve 61 is abutted against the upper end surface 22 of the limit stop ring 2 and/or the outer sleeve 61 is abutted against the top surface 33 of the limit gasket 3, so that the spherical hinge for suspension vibration reduction generates second rigidity change in the radial direction. Since the outer sleeve 61 is in rigid collision with the upper end surface 22 of the spacing block ring 2 and the outer sleeve 61 is also in rigid collision with the top surface 33 of the spacing gasket 3, both the spacing block ring 2 and the spacing gasket 3 can play a role of stopping. Therefore, after the spherical hinge generates the second rigidity change in the radial direction, the rigidity of the spherical hinge is suddenly increased, and the elastic body 62 of the spherical hinge is ensured not to be damaged easily.
In the present embodiment, it is preferable that: the limiting baffle ring 2 and the limiting gasket 3 have the same outer diameter. That is, the distance between the sheath 61 and the upper face 22 of the spacing ring 2 is equal to the distance between the sheath 61 and the top face 33 of the spacing washer 3. The inflection point of the second radial variable stiffness generated by the spherical hinge for suspension and vibration reduction can be adjusted by adjusting the distance between the outer sleeve 61 and the upper end surface 22 of the limit baffle ring 2. That is to say, the larger the distance between the outer sleeve 61 and the upper end surface 22 of the limit stop ring 2 is, the larger the deformation of the elastic body 62 is, the outer sleeve 61 and the upper end surface 22 can be abutted against each other, and the spherical hinge can generate the second radial stiffness change after reaching the larger stiffness. Therefore, the distance between the outer sleeve 61 and the upper end face 22 of the limit stop ring 2 can be adjusted to achieve large radial rigidity of the spherical hinge, and then secondary radial rigidity changing is generated. Similarly, the distance between the outer sleeve 61 and the top surface 33 of the limiting gasket 3 can be adjusted, and the second radial variable stiffness can be generated after the spherical hinge reaches the large radial stiffness. That is, the inflection point of the second radial stiffness generated by the spherical hinge for suspension and vibration damping can be adjusted by adjusting the distance between the outer sleeve 61 and the upper end surface 22 of the stopper ring 2 or the distance between the outer sleeve 61 and the top surface 33 of the stopper washer 3.
In this embodiment, the two ends of the mounting seat 7 extend out of the outer sleeve 61 in the axial direction, and the thickness of the inner sides of the limiting gasket 3 and the adjusting gasket 91 in the axial direction can be increased, so that the mounting seat 7 is abutted against the upper end surface 22 of the limiting baffle ring 2 and/or the mounting seat 7 is abutted against the top surface 33 of the limiting gasket 3. The thickness of the inner side of the adjusting shim 91 is as follows: the thickness of the portion of the spacer 91 that abuts the step of the spindle 63 in the axial direction is adjusted. Because the outside diameter of spacing fender ring 2 and spacing gasket 3 is the same, promptly: the distance between the mounting seat 7 and the upper end surface 22 of the spacing block ring 2 is equal to the distance between the mounting seat 7 and the top surface 33 of the spacing washer 3. At this time, the inflection point of the second radial stiffness variation generated by the spherical hinge for suspension vibration reduction can be adjusted by adjusting the distance between the mounting seat 7 and the upper end surface 22 of the limit stop ring 2.
In this embodiment, the stiffness performance of the suspension damping ball hinge can be changed by adjusting the inflection point of the first radial variable stiffness and the inflection point of the second radial variable stiffness generated by the suspension damping ball hinge, so that the suspension damping ball hinge is applied to different types of equipment, and the applicability of the suspension damping ball hinge is improved. The front end of each member mentioned in the present embodiment means an end of each member near the bolt head 11, and the rear end of each member means an end of each member far from the bolt head 11.
It will be apparent that modifications and variations are possible without departing from the principles of the invention as set forth herein.
Claims (10)
1. The spherical hinge for suspension vibration reduction comprises an outer sleeve, a core shaft and an elastic body, wherein the outer sleeve and the core shaft are integrally formed by hot vulcanization through the elastic body to form the spherical hinge for suspension vibration reduction; the method is characterized in that: the limiting baffle ring is arranged on one side of the spherical hinge for suspension vibration reduction, and the limiting gasket is arranged on the other side of the spherical hinge for suspension vibration reduction, so that when the spherical hinge for suspension vibration reduction is subjected to radial acting force, the limiting baffle ring and the limiting gasket can block deformation generated by the elastic body, and the spherical hinge for suspension vibration reduction generates variable rigidity in the radial direction.
2. The method for adjusting the radial variable stiffness of the spherical hinge for suspension vibration damping according to claim 1, wherein: the limiting stop ring comprises a side limiting surface and an upper end surface, the side limiting surface is arranged on the inner side of the limiting stop ring in the axial direction, the upper end surface is arranged on the outer side of the limiting stop ring in the radial direction, and cambered surfaces are arranged on two sides of the elastic body in the axial direction; when the spherical hinge for suspension vibration reduction receives radial acting force, the cambered surface close to one side of the limiting stop ring can generate deformation, so that the cambered surface of the elastic body bulges outwards; when the bulged cambered surface is abutted against the side limiting surface, the limiting stop ring can prevent the elastomer from further deforming.
3. The method for adjusting the radial variable stiffness of the spherical hinge for suspension vibration damping according to claim 2, wherein: the limiting gasket comprises a side stopping surface and a top surface, the side stopping surface is arranged on the inner side of the limiting gasket in the axial direction, and the top surface is arranged on the outer side of the limiting gasket in the radial direction; when the suspension damping spherical hinge is subjected to radial acting force, the cambered surface close to one side of the limiting gasket is also deformed, so that the cambered surface of the elastic body bulges outwards; when the bulged cambered surface is propped against the side stop surface, the limiting gasket can prevent the elastic body from further deforming.
4. The method for adjusting the radial variable stiffness of the spherical hinge for suspension vibration damping according to claim 3, wherein: when the spherical hinge for suspension vibration reduction bears gradually-increased radial pressure, and the bulged cambered surface is abutted against the side limiting surface and the side stop surface, the deformation of the elastic body is blocked by the limiting stop ring and the limiting gasket, so that the radial rigidity of the spherical hinge for suspension vibration reduction is increased suddenly, and the first rigidity change of the spherical hinge for suspension vibration reduction in the radial direction is realized.
5. The method for adjusting the radial variable stiffness of the spherical hinge for suspension vibration damping according to claim 4, wherein: the deformation degree of the elastic body in the radial direction when the bulged cambered surface is propped against the side stop surface is adjusted by changing the distance between the side stop surface and the cambered surface in the axial direction; and adjusting the deformation degree of the elastic body in the radial direction when the bulged cambered surface is abutted against the side limiting surface by changing the distance between the side limiting surface and the cambered surface in the axial direction, thereby adjusting the inflection point of the first radial variable stiffness generated by the spherical hinge for suspension vibration reduction.
6. The method for adjusting the radial variable stiffness of the spherical hinge for suspension vibration damping according to claim 5, wherein: after the cambered surface is abutted against the side limiting surface and the side stop surface, along with the gradual increase of the radial pressure of the spherical hinge for suspension vibration reduction, the outer sleeve and the mounting seat gradually approach the mandrel along the radial direction until the outer sleeve is abutted against the upper end surface of the limiting stop ring or the top surface of the limiting gasket, or the mounting seat is abutted against the upper end surface of the limiting stop ring or the top surface of the limiting gasket, so that the spherical hinge for suspension vibration reduction generates second rigidity change in the radial direction.
7. The method for adjusting the radial variable stiffness of the spherical hinge for suspension vibration damping according to claim 6, wherein: the distance between the outer sleeve and the upper end face of the limiting baffle ring or the distance between the outer sleeve and the top face of the limiting gasket is adjusted, so that the inflection point of the second radial variable stiffness generated by the spherical hinge for suspension vibration reduction is adjusted.
8. A radial variable stiffness adjusting device of a spherical hinge for suspension vibration reduction comprises an outer sleeve, a core shaft and an elastic body, wherein the core shaft is hollowed, and the outer sleeve and the core shaft are integrally formed by hot vulcanization through the elastic body to form the spherical hinge for suspension vibration reduction; the method is characterized in that: the radial variable stiffness adjusting device comprises a long bolt, a limiting device and a fixed support, the fixed support is sleeved on the mandrel, the mandrel is sleeved on the long bolt, and the limiting device is installed on the long bolt or the mandrel.
9. The radial stiffness adjusting device of a spherical hinge for suspension damping according to claim 8, wherein: the limiting device comprises a limiting stop ring and a limiting gasket, the long bolt comprises a bolt head and a bolt rod, and the bolt head and the bolt rod are connected into a whole in a seamless mode; the limiting stop ring is arranged on the bolt rod and is arranged between the bolt head and the mandrel; spacing gasket is installed on the dabber, and spacing gasket setting is between elastomer and fixing support.
10. A radial stiffness-varying adjusting device of a spherical hinge for suspension damping according to claim 9, wherein: the radial variable stiffness adjusting device further comprises a gasket and a nut, the gasket comprises a first gasket and a second gasket, and the nut comprises a first nut and a second nut; the first gasket is arranged between the fixed support and the first nut, and the second gasket is arranged between the mandrel and the second nut.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021113543025 | 2021-11-16 | ||
| CN202111354302.5A CN114087319A (en) | 2021-11-16 | 2021-11-16 | Limiting method and limiting device of spherical hinge for suspension vibration reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115539566A true CN115539566A (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111354302.5A Withdrawn CN114087319A (en) | 2021-11-16 | 2021-11-16 | Limiting method and limiting device of spherical hinge for suspension vibration reduction |
| CN202211143425.9A Pending CN115435042A (en) | 2021-11-16 | 2022-09-20 | Limiting method of spherical hinge for suspension vibration reduction |
| CN202211144099.3A Pending CN115614431A (en) | 2021-11-16 | 2022-09-20 | Limiting method and limiting device of spherical hinge for suspension vibration reduction |
| CN202211143413.6A Pending CN115539566A (en) | 2021-11-16 | 2022-09-20 | Radial variable stiffness adjusting method and device of spherical hinge for suspension vibration reduction |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111354302.5A Withdrawn CN114087319A (en) | 2021-11-16 | 2021-11-16 | Limiting method and limiting device of spherical hinge for suspension vibration reduction |
| CN202211143425.9A Pending CN115435042A (en) | 2021-11-16 | 2022-09-20 | Limiting method of spherical hinge for suspension vibration reduction |
| CN202211144099.3A Pending CN115614431A (en) | 2021-11-16 | 2022-09-20 | Limiting method and limiting device of spherical hinge for suspension vibration reduction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115045911A (en) * | 2022-06-17 | 2022-09-13 | 东风柳州汽车有限公司 | Rubber bearing for automobile chassis |
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2021
- 2021-11-16 CN CN202111354302.5A patent/CN114087319A/en not_active Withdrawn
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2022
- 2022-09-20 CN CN202211143425.9A patent/CN115435042A/en active Pending
- 2022-09-20 CN CN202211144099.3A patent/CN115614431A/en active Pending
- 2022-09-20 CN CN202211143413.6A patent/CN115539566A/en active Pending
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| Publication number | Publication date |
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| CN114087319A (en) | 2022-02-25 |
| CN115614431A (en) | 2023-01-17 |
| CN115435042A (en) | 2022-12-06 |
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