CN106627642A - Method for adjusting rigidity by changing structural size of rotation arm node, and rotation arm node - Google Patents
Method for adjusting rigidity by changing structural size of rotation arm node, and rotation arm node Download PDFInfo
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- CN106627642A CN106627642A CN201510706982.0A CN201510706982A CN106627642A CN 106627642 A CN106627642 A CN 106627642A CN 201510706982 A CN201510706982 A CN 201510706982A CN 106627642 A CN106627642 A CN 106627642A
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Abstract
A method for adjusting the rigidity by changing the structural size of a rotation arm node can improve the rigidity matching performance of the rotation arm node by changing the structural size of the rotation arm node. A two tapered inner hole rotation arm node combined structure is adopted, the rigidity performance of the rotation arm node is changed by changing the size of a rubber profile of the rotation arm node and the diameter size of an inner sleeve and an outer sleeve of the rotation arm node, and then the longitudinal rigidity and the deflection rigidity of the rotation arm node are lowered. The rigidity of the rotation arm node is adjusted by matching the size of the rubber profile and the diameter size of the inner sleeve and the outer sleeve of the rotation arm node, the longitudinal rigidity and the deflection rigidity of the rotation arm node are lowered, and the longitudinal rigidity of the rotation arm node is controlled in 11-13 KN.mm<-1>; the deflection rigidity is lowered by controlling the longitudinal rigidity, the axial rigidity is improved, the axial rigidity of the rotation arm node is controlled in 6-8 KN.mm<-1>, and the torsional rigidity will not decrease. The experiment proves that the method can effectively prevent or relieve abrasion of bearings in a axle box.
Description
Technical field
The present invention relates to the method for adjustment and device of a kind of locomotive component performance, specifically related to a kind of method and pivoted arm node by changing the performance of locomotive pivoted arm node to prevent or reduce locomotive axle box bearing wear, to the service life for improving locomotive axle box bearing.Category locomotive component manufacturing technology field.
Background technology：
Pivoted arm axle-box locating mode is a kind of traditional axle-box locating mode, is widely used in light rail, subway, way-train and Highs-speed motor train unit bogie.So-called pivoted arm axle-box locating is to be combined together axle box with positioning arm, constitutes tumbler shaft, and axle box is integrated with positioning tie bar, constitutes pivoted arm structure.Axle box swivel arm positioning is connected with framework mounting seat by the node of pivoted arm one end.Node is made up of 2 cone rubber joints, for providing the longitudinal rigidity of axle-box locating and to provide one jointly with primary spring be lateral stiffness, the vertical and horizontal active force between transfer wheel pair and framework.The vertical elasticity of axle box is then provided by primary spring.Pivoted arm axle-box locating has simple structure, falls to taking turns convenient advantage, and can easily change the rubber arthrosis of node, positioning elastic parameter, regulation of the realization to bogie dynamic performance in length and breadth of adjustment and change axle box, is conducive to the trial-production of bogie modularization and new bogie.In recent years, tumbler axle-box positioning starts to be applied to engine truck, such as France's T G V-A bullet train motor car bogies, and the 200 km/h locomotives of China's export Kazakhstan all adopt pivoted arm axle-box locating.The positioning of pivoted arm and its performance in joint affect very big to whole pivoted arm axle-box locating in pivoted arm axle-box locating.Wherein, pivoted arm node is a very crucial part, pivoted arm node plays a part of to connect pivoted arm and positioning tie bar, it is contemplated that elastically-deformable needs, general axle box swivel arm node all adopts the flexible member of metal-vulcanization of rubber, to tractive force and brake force between transfer wheel pair and framework.Transverse direction and longitudinal direction relative displacement of the wheel pair and between framework is realized by the deformation of node rubber sleeve, is the suspender for directly affecting vehicle operation stability and curving performance.But how to determine that pivoted arm node longitudinal rigidity and deflection stiffness are the current primary problems for solving, often there is axle bearing serious wear in Jing in present locomotive pivoted arm axle-box locating, largely it is that the performance parameter of pivoted arm node selects improper according to analysis, cause axle bearing serious wear, so by the normal operation of extreme influence vehicle, the service life of vehicle is reduced, therefore necessary this is further studied.
Do not find there be the patent literature constructed with the present invention by patent retrieval, the patent for having certain relation with the present invention mainly has following：
1st, Patent No. CN01213318, the utility model patent of entitled " bogie of car axle box swivel arm is hung with without abrasion composite joint sleeve ", which disclose a kind of bogie of car axle box swivel arm to hang with without abrasion composite joint sleeve, it is made up of mandrel, elastic rubbery body and the part of outer metallic sheath three, the core bag of mandrel is sphere, elastic rubbery body is sphere-contact with mandrel and outer metallic sheath, and elastic rubbery body is by bonding by Vulcanization on mandrel and outer metallic sheath.Its overall static properties is 1: 2.5～3.2 for axial direction and radial rigidity ratio, and outer metallic sheath 2 is the split-type structure of decile, can be three-clove style structure or multi-clove type structure, there is the compression groove of an axial direction between lobe and lobe, and, pressure assembling force for needed for ensureing, metal-coating is that slight interference coordinates installation with installing hole.
2nd, Patent No. CN200820072284, entitled " rocker type journal box positioning device of Highs-speed motor train unit bogie " utility model patent, which disclose a kind of rocker type journal box positioning device of Highs-speed motor train unit bogie, including axle box, contiguous block, rubber nodal point, journal box spring, axle box is split type, it is made up of upper axle box and lower axle box two parts, axle box is provided with safety screen, and laminated spring is provided between journal box spring and axle box.
3rd, Patent No. CN201210084417, the patent of invention of entitled " a kind of bogie rocker type journal box positioning device ", a kind of bogie rocker type journal box positioning device is which disclosed, it includes a positioning arm, an axle box, a framework positioning arm seat, a journal box spring, axle box rubber packing composition, a unidirectional axle box oil-pressure damper and a framework；Described positioning arm one end is bolted on the load bearing seat of the axle box, and the other end is connected by elastic panel nodes with the framework positioning arm seat, constitutes articulated jib；The journal box spring is provided between axle box top and framework, and the axle box rubber packing composition is had additional between the axle box and the journal box spring；It is connected by the unidirectional axle box oleo-gear with the frame end positioned at the positioning arm end.
3rd, Patent No. US19920892713, entitled " Axle box suspension with resilient
elements adhered to the movable components such that all relative movement
The patent of invention of between the components occurs by deformation of the resilient elements "; which disclose a kind of axle box hanging device; the device axle box one end is pivoted arm; pivoted arm is connected to vehicle frame by flexible member; make longitudinal direction; laterally and vertically can pass through to realize that pivoted arm gapless is moved between the flexible member of deformation and rotating shaft between the rotating shaft of rotary motion and vehicle frame, the riding stability for making vehicle is greatly improved.Further, since axle box hangs to be provided between relative slide unit limiting or gap, long-term abrasion is effectively reduced or eliminated, reduce the replacement of part, maintenance is more facilitated.
Although above-mentioned these patents are directed to some structures of pivoted arm node and improve, but all do not propose the performance of pivoted arm in specific how adjustment to improve pivoted arm axle-box locating by the longitudinal rigidity and deflection stiffness of pivoted arm node, prevent the abrasion of axle bearing.
Simultaneously, we are by the research worn and torn to existing axle bearing, we have found that why occur that axle bearing weares and teares, mainly vehicle is when high speed is by curve, take turns to very big transverse load can be produced to rail, because pivoted arm node is to connect a connector for being tumbler shaft and bogie frame, so having very big restricted effect, the longitudinal direction of current pivoted arm node to the bearing in axle box and axle box（Radially）Rigidity and deflection stiffness are excessive, and this will make wheel to can further increase to rail transverse load；Meanwhile, rail also can be to wheel to producing same big side-force reaction, so as to wear away wheel rim；Equally, this transverse load can also increase the transverse load of the bearing inside axle box, so as to cause the bearing wear inside axle box to increase.Therefore the bearing wear inside axle box is reduced, the appropriate longitudinal rigidity for reducing pivoted arm node is highly beneficial, but if the longitudinal rigidity of pivoted arm node reduces excessive, pivoted arm node connection axle box will be caused to be affected with the connection restriction effect of framework；So vehicle will occur vehicle snaking motion, reduce stationarity, and derailing will be occurred when serious.Therefore suitable pivoted arm node longitudinal direction how is selected（Radially）Rigidity becomes the key for effectively preventing the bearing wear inside axle box.And pivoted arm node longitudinal direction（Radially）The selection of rigidity is heavily dependent on the selection of pivoted arm node rubber layer, generally for pivoted arm node rubber layer design all mainly from the longitudinal direction of rubber layer and axial rigidity than considering, its radial/axial ratio of rigidity (abbreviation footpath/axle ratio of rigidity) is generally limited into 7: 1 or so, and is all to consider relatively more by changing the layout ramp structure and mode of rubber layer.But find under study for action, what is taken due to pivoted arm axle-box locating transfer arm joint point is two section combining structures, so the symmetry of two section pivoted arm nodes, the cooperation of the axis of cone and taper hole, and its cumulative limit of four nodes of bogie and his part, cause pivoted arm after node installation eccentric with framework, so as to increased the horizontal and deflection load of node, this will increase wheel to the problems such as abrasion, so as to increase the bearing wear inside axle box.Actually at present we it is determined that pivoted arm node rubber layer design when only consider that radial/axial ratio of rigidity is inadequate, what pivoted arm node was born in actual applications be exist simultaneously radially, axially, deflection and torsional load, belong to composite bearing element, thus should from radially, axially, deflection and pivoted arm node is defined in terms of reversing four just truer.
In addition, we are also had found by analysis and research, pivoted arm node mainly transmits longitudinal traction, in horizontal and vertical guide wheel pair, and it is the displacement in steel spring vertical direction not limit one, and for the one of axle box overhead type is pivoted arm axle box, pivoted arm node is almost not subject to vertical load, that is to say, that the horizontal and vertical rigidity desired by pivoted arm node is different.It is typically all at present by digging out a some holes or groove on the direction in pivoted arm node rubber layer compared with side crops industry to meet this demand, empty real is formed to the rubber bodies structure for combining to realize, but do so can bring very big trouble to installing, need aligning direction to install during installation, will otherwise not reach desired effect.
The content of the invention
Present invention aims to often there is the problem of axle bearing serious wear in Jing in existing locomotive pivoted arm axle-box locating, a kind of method for preventing or reducing motorcycle axle bearing wear and pivoted arm node are proposed, the method and pivoted arm node effectively reduce axle bearing abrasion by the part-structure of the pivoted arm node in change pivoted arm axle-box locating.
In order to reach this purpose, the invention provides a kind of method by changing pivoted arm node structure size adjusting rigidity, it is by adjusting the method that pivoted arm node structure size improves pivoted arm connection stiffness matching performance, using two section cone-shaped inner hole pivoted arm combination of nodes structures, and the rigidity property by changing the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat to change pivoted arm node, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline, simultaneously by increasing axial rigidity, torsional rigidity is avoided to decline, effectively reduce axle bearing abrasion.
Further, described is, first according to the vertical deformation of arm length and steel spring, to calculate the torsion angle of pivoted arm node by the rigidity property for changing the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat to change pivoted arm node；Further according to the transversely deforming of arm length and steel spring, the deflection angle of pivoted arm node is calculated；Determine the longitudinal rigidity of pivoted arm node further according to the torsion angle and deflection angle of pivoted arm node, deflection stiffness and torsional rigidity, then according to the transverse load and vertical load of vehicle, go out the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat using FEM calculation, by rubber molding surface size and the longitudinal rigidity of the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline, simultaneously by increasing axial rigidity, ensure that torsional rigidity does not decline.
Further, the described longitudinal rigidity by rubber molding surface size and the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness are that the internal diameter of pivoted arm node inner sleeve is set as into 90 ~ 93mm, and external diameter is set as 128 ~ 132mm；The internal diameter of the diameter dimension of overcoat is set as 128 ~ 132mm, and external diameter is set as 170 ~ 173mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, and deflection stiffness is reduced by controlling longitudinal rigidity, axial rigidity is controlled in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Further, the described longitudinal rigidity by rubber molding surface size and the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness are that the inward at both ends of the rubber layer of pivoted arm node inner sleeve is dug out into a circle groove；Wherein, the groove dimensions of minor diameter one are controlled in 15 ~ 30mm；The groove dimensions that major diameter is one are controlled in 10 ~ 20mm, the radial rigidity of pivoted arm node is reduced by the form of digging groove, and deflection stiffness is reduced by controlling longitudinal rigidity, improve the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Further, described groove is multistage deep trench；Wherein, first paragraph is the monolateral surface groove being inwardly recessed from rubber layer port surface, and monolateral surface groove has while being the ring side with pivoted arm node diameter parallel, another side is inside the first hypotenuse for closing up；Second segment groove is the radiused ramp groove with circular arc base, radiused ramp groove has while being the hypotenuse of slope identical second with pivoted arm node rubber layer inclined-plane, second hypotenuse is connected with the first hypotenuse of monolateral surface groove, and radiused ramp groove another side is the annular edge being connected with monolateral inclined-plane grooved ring side；Annular edge is got up with the second hypotenuse by circular sliding slopes, forms radiused ramp groove.
Further, the ring side of described monolateral surface groove and the first hypotenuse for pivoted arm node rubber layer bound edge, ring side and the first hypotenuse are extended to respectively the end face of pivoted arm node metal inner sleeve and overcoat, form overall parcel shape.
A kind of pivoted arm node, pivoted arm node is combined by the elastic rubber of two section symmetrical structures and formed, including left metal-coating and left inner metal sleeve, integrally sulfuration has left rubber layer between left metal-coating and left inner metal sleeve, and right metal-coating and right inner metal sleeve, integrally sulfuration has right rubber layer between right metal-coating and right inner metal sleeve；Left rubber layer and right rubber layer are opposite diagonally disposed respectively, and left inner metal sleeve is also respectively taper hole and arranges in opposite directions with the endoporus of right inner metal sleeve；Characterized in that, the internal diameter of pivoted arm node inner sleeve is set as 90 ~ 93mm, external diameter is set as 128 ~ 132mm；The internal diameter of the diameter dimension of overcoat is set as 128 ~ 132mm, and external diameter is set as 170 ~ 173mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, and deflection stiffness is reduced by controlling longitudinal rigidity, axial rigidity is controlled in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Further, the inward at both ends of the rubber layer of described pivoted arm node inner sleeve digs out a circle groove；Wherein, the groove dimensions of minor diameter one are controlled in 15 ~ 30mm；The groove dimensions control that major diameter is one reduces the radial rigidity of pivoted arm node in 10 ~ 20mm by the form of digging groove, improves the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, and deflection stiffness is reduced by controlling longitudinal rigidity, axial rigidity is controlled in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Further, described groove is multistage deep trench；Wherein, first paragraph groove is the monolateral surface groove being inwardly recessed from rubber layer port surface, and monolateral surface groove has while being the ring side with pivoted arm node diameter parallel, another side is inside the first hypotenuse for closing up；Second segment groove is the radiused ramp groove with circular arc base, radiused ramp groove has while being the hypotenuse of slope identical second with pivoted arm node rubber layer inclined-plane, second hypotenuse is connected with the first hypotenuse of monolateral surface groove, and radiused ramp groove another side is the annular edge being connected with monolateral inclined-plane grooved ring side；Annular edge is got up with the second hypotenuse by circular sliding slopes, forms radiused ramp groove.
Further, the ring side of described monolateral surface groove and the first hypotenuse for pivoted arm node rubber layer bound edge, ring side and the first hypotenuse are extended to respectively the end face of pivoted arm node metal inner sleeve and overcoat, form overall parcel shape.
It is an advantage of the current invention that：
The present invention is after being studied repeatedly through the problem in the pivoted arm axle-box locating used scene Jing often there is axle bearing serious wear, it was found that vehicle is when high speed is by curve, take turns to very big transverse load can be produced to rail, if the longitudinal rigidity and deflection stiffness of pivoted arm node are excessive, transverse load will be made further to increase, accelerate the actual conditions of the bearing wear inside axle box, the method for proposing to change pivoted arm connection stiffness by adjustment pivoted arm node structure size, to prevent axle box bearing from wearing and tearing, this relatively it is at present actual simply it is simple from the structure of rubber layer considering that changing rigidity is very different；We have found through testing that the simple structure for changing rubber layer is inadequate for the connection stiffness matching of adjustment pivoted arm, it is very helpful for pivoted arm connection stiffness matching is improved by the overall pivoted arm node structure size of appropriate adjustment, this for wanting both to reduce pivoted arm node radially, while it is also helpful to increase axial rigidity by adjustment pivoted arm node rubber layer thickness.According to such case, we propose to improve the rigidity property of the rubber molding surface size of pivoted arm node and the diameter dimension of pivoted arm node inner sleeve and overcoat to change pivoted arm node through the analysis and research of kinds of schemes, and propose first according to the vertical deformation of arm length and steel spring, calculate the torsion angle of pivoted arm node；Further according to the transversely deforming of arm length and steel spring, the deflection angle of pivoted arm node is calculated；Determine the longitudinal rigidity of pivoted arm node further according to the torsion angle and deflection angle of pivoted arm node, deflection stiffness and torsional rigidity, then according to the transverse load and vertical load of vehicle, go out the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat using FEM calculation, by rubber molding surface size and the longitudinal rigidity of the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness, so that the longitudinal rigidity of pivoted arm node declines, the longitudinal rigidity for ensureing pivoted arm node is controlled in 11-13KN.mm-1, and deflection stiffness is reduced by controlling longitudinal rigidity, while by increasing axial rigidity, it is ensured that the axial rigidity of pivoted arm node is controlled in 6-8KN.mm-1Within the scope of, it is ensured that torsional rigidity does not decline, and test proves effectively prevent or reduce the bearing wear inside axle box.
Description of the drawings
Fig. 1 is the combining structure schematic diagram of pivoted arm node of the present invention；
Fig. 2 is the structural representation of the single section pivoted arm node of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings with specific embodiment the present invention is expanded on further.
Accompanying drawing 1 gives the principle of the present invention and illustrates, can be seen that from accompanying drawing, the present invention relates to a kind of method by changing pivoted arm node structure size adjusting rigidity, it is by adjusting the method that pivoted arm node structure size improves pivoted arm connection stiffness matching performance, using two section cone-shaped inner hole pivoted arm combination of nodes structures, and the rigidity property by changing the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat to change pivoted arm node, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline, simultaneously by increasing axial rigidity, torsional rigidity is avoided to decline, effectively reduce axle bearing abrasion.
Further, described is, first according to the vertical deformation of arm length and steel spring, to calculate the torsion angle of pivoted arm node by the rigidity property for changing the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat to change pivoted arm node；Further according to the transversely deforming of arm length and steel spring, the deflection angle of pivoted arm node is calculated；Determine the longitudinal rigidity of pivoted arm node further according to the torsion angle and deflection angle of pivoted arm node, deflection stiffness and torsional rigidity, then according to the transverse load and vertical load of vehicle, go out the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat using FEM calculation, by rubber molding surface size and the longitudinal rigidity of the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline, simultaneously by increasing axial rigidity, ensure that torsional rigidity does not decline.
Further, the described longitudinal rigidity by rubber molding surface size and the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness are that the internal diameter of pivoted arm node inner sleeve is set as into 90 ~ 93mm, and external diameter is set as 128 ~ 132mm；The internal diameter of the diameter dimension of overcoat is set as 128 ~ 132mm, and external diameter is set as 170 ~ 173mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Further, the described longitudinal rigidity by rubber molding surface size and the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness are that the inward at both ends of the rubber layer of pivoted arm node inner sleeve is dug out into a circle groove；Wherein, the groove dimensions of minor diameter one are controlled in 15 ~ 30mm；The groove dimensions control that major diameter is one reduces the radial rigidity of pivoted arm node in 10 ~ 20mm by the form of digging groove, improves the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, and deflection stiffness is reduced by controlling longitudinal rigidity, axial rigidity is controlled in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Further, described groove is multistage deep trench；Wherein, first paragraph is the monolateral surface groove being inwardly recessed from rubber layer port surface, and monolateral surface groove has while being the ring side with pivoted arm node diameter parallel, another side is inside the first hypotenuse for closing up；Second segment groove is the radiused ramp groove with circular arc base, radiused ramp groove has while being the hypotenuse of slope identical second with pivoted arm node rubber layer inclined-plane, second hypotenuse is connected with the first hypotenuse of monolateral surface groove, and radiused ramp groove another side is the annular edge being connected with monolateral inclined-plane grooved ring side；Annular edge is got up with the second hypotenuse by circular sliding slopes, forms radiused ramp groove.
Further, the ring side of described monolateral surface groove and the first hypotenuse for pivoted arm node rubber layer bound edge, ring side and the first hypotenuse are extended to respectively the end face of pivoted arm node metal inner sleeve and overcoat, form overall parcel shape.
Embodiment one
Attached Fig. 1 and 2 gives a specific embodiment of the present invention；A kind of pivoted arm node, including left metal-coating 2 and left inner metal sleeve 1, integrally sulfuration has left rubber layer 3, and right metal-coating 4 and right inner metal sleeve 5 between left metal-coating 2 and left inner metal sleeve 1, and integrally sulfuration has right rubber layer 6 between right metal-coating 4 and right inner metal sleeve 5；Left inner metal sleeve 1 is respectively taper hole and arranges in opposite directions with the endoporus of right inner metal sleeve 5, i.e., outside, the microcephaly of taper hole is close to be close together back-to-back the major part of taper hole interior；Characterized in that, the D1 internal diameters of pivoted arm node inner sleeve are set as 90 ~ 93mm, outer diameter D 3 is set as 128 ~ 132mm；The internal diameter D2 of the diameter dimension of overcoat is set as 128 ~ 132mm, and outer diameter D 4 is set as 170 ~ 173mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
The inward at both ends of the rubber layer of described pivoted arm node inner sleeve respectively digs out a circle ring-shaped groove；Wherein, gash depth size H3 of minor diameter one is controlled in 15 ~ 30mm；The gash depth size H4 control of major diameter one had both reduced the radial rigidity of pivoted arm node in 10 ~ 20mm by digging the form of whole circle groove, improved the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, the bearing wear inside axle box is reduced, while and convenient installation, without to Kongxiang.
Described groove is multistage deep trench；Wherein, first paragraph groove 7 is the monolateral surface groove being inwardly recessed from rubber layer port surface, and monolateral surface groove has while being the ring side with pivoted arm node diameter parallel, another side is inside the first hypotenuse for closing up；Second segment groove 8 is the radiused ramp groove with circular arc base, radiused ramp groove has while being the hypotenuse of slope identical second with pivoted arm node rubber layer inclined-plane, second hypotenuse is connected with the first hypotenuse of monolateral surface groove, and radiused ramp groove another side is the annular edge being connected with monolateral inclined-plane grooved ring side；Annular edge is got up with the second hypotenuse by circular sliding slopes, forms radiused ramp groove.
The ring side of described monolateral surface groove and the bound edge that the first hypotenuse is pivoted arm node rubber layer, ring side and the first hypotenuse are extended to respectively the end face of pivoted arm node metal inner sleeve and overcoat, form overall parcel shape.
Embodiment two
Embodiment two is essentially the same with the structure of embodiment one, and simply the internal diameter of pivoted arm node inner sleeve is set as 91 ~ 92mm, and external diameter is set as 129 ~ 130mm；The internal diameter of the diameter dimension of overcoat is set as 129 ~ 130mm, and external diameter is set as 171 ~ 172mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box..
Embodiment three
Embodiment three is essentially the same with the structure of embodiment two, and simply the groove dimensions of minor diameter one are controlled in 23 ~ 26mm；The groove dimensions control that major diameter is one reduces the radial rigidity of pivoted arm node in 15 ~ 18mm by the form of digging groove, improves the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
Above-mentioned listed embodiment, simply combine accompanying drawing carries out clear, complete description to technical scheme；Obviously, described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
It is an advantage of the current invention that：
The present invention is after being studied repeatedly through the problem in the pivoted arm axle-box locating used scene Jing often there is axle bearing serious wear, it was found that vehicle is when high speed is by curve, take turns to very big transverse load can be produced to rail, if the longitudinal rigidity and deflection stiffness of pivoted arm node are excessive, transverse load will be made further to increase, accelerate the actual conditions of the bearing wear inside axle box, the method for proposing to change pivoted arm connection stiffness by adjustment pivoted arm node structure size, to prevent axle box bearing from wearing and tearing, this relatively it is at present actual simply it is simple from the structure of rubber layer considering that changing rigidity is very different；We have found through testing that the simple structure for changing rubber layer is inadequate for the connection stiffness matching of adjustment pivoted arm, it is very helpful for pivoted arm connection stiffness matching is improved by the overall pivoted arm node structure size of appropriate adjustment, this for wanting both to reduce pivoted arm node radially, while it is also helpful to increase axial rigidity by adjustment pivoted arm node rubber layer thickness.According to such case, we propose to improve the rigidity property of the rubber molding surface size of pivoted arm node and the diameter dimension of pivoted arm node inner sleeve and overcoat to change pivoted arm node through the analysis and research of kinds of schemes, and propose first according to the vertical deformation of arm length and steel spring, calculate the torsion angle of pivoted arm node；Further according to the transversely deforming of arm length and steel spring, the deflection angle of pivoted arm node is calculated；Determine the longitudinal rigidity of pivoted arm node further according to the torsion angle and deflection angle of pivoted arm node, deflection stiffness and torsional rigidity, then according to the transverse load and vertical load of vehicle, go out the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat using FEM calculation, by rubber molding surface size and the longitudinal rigidity of the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness, so that the longitudinal rigidity of pivoted arm node declines, the longitudinal rigidity for ensureing pivoted arm node is controlled in 11-13KN.mm-1, while by increasing axial rigidity, it is ensured that the axial rigidity of pivoted arm node is controlled in 6-8KN.mm-1Within the scope of, it is ensured that torsional rigidity does not decline, and test proves effectively prevent or reduce the bearing wear inside axle box.
Claims (10)
1. it is a kind of by change pivoted arm node structure size adjusting rigidity method, it is by adjusting the method that pivoted arm node structure size improves pivoted arm connection stiffness matching performance, using two section cone-shaped inner hole pivoted arm combination of nodes structures, and the rigidity property by changing the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat to change pivoted arm node, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline, simultaneously by increasing axial rigidity, avoid torsional rigidity from declining, effectively reduce axle bearing abrasion.
2. as claimed in claim 1 by the method for change pivoted arm node structure size adjusting rigidity, it is characterised in that：Described is, first according to the vertical deformation of arm length and steel spring, to calculate the torsion angle of pivoted arm node by the rigidity property for changing the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat to change pivoted arm node；Further according to the transversely deforming of arm length and steel spring, the deflection angle of pivoted arm node is calculated；Determine the longitudinal rigidity of pivoted arm node further according to the torsion angle and deflection angle of pivoted arm node, deflection stiffness and torsional rigidity, then according to the transverse load and vertical load of vehicle, go out the diameter dimension of pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and overcoat using FEM calculation, by rubber molding surface size and the longitudinal rigidity of the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline, simultaneously by increasing axial rigidity, ensure that torsional rigidity does not decline.
3. as claimed in claim 2 by the method for change pivoted arm node structure size adjusting rigidity, it is characterised in that：The described longitudinal rigidity by rubber molding surface size and the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness are that the internal diameter of pivoted arm node inner sleeve is set as into 90 ~ 93mm, and external diameter is set as 128 ~ 132mm；The internal diameter of the diameter dimension of overcoat is set as 128 ~ 132mm, and external diameter is set as 170 ~ 173mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
4. as claimed in claim 2 by the method for change pivoted arm node structure size adjusting rigidity, it is characterised in that：The described longitudinal rigidity by rubber molding surface size and the Matching and modification pivoted arm node of the diameter dimension of pivoted arm node inner sleeve and overcoat, axial rigidity, torsional rigidity and deflection stiffness are that the inward at both ends of the rubber layer of pivoted arm node inner sleeve is dug out into a circle groove；Wherein, the groove dimensions of minor diameter one are controlled in 15 ~ 30mm；The groove dimensions that major diameter is one are controlled in 10 ~ 20mm, the radial rigidity of pivoted arm node is reduced by the form of digging groove, and deflection stiffness is reduced by controlling longitudinal rigidity, improve the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
5. as described in claim 3 or 4 by change pivoted arm node structure size adjusting rigidity method, it is characterised in that：Described groove is multistage deep trench；Wherein, first paragraph groove is the monolateral surface groove being inwardly recessed from rubber layer port surface, and monolateral surface groove has while being the ring side with pivoted arm node diameter parallel, another side is inside the first hypotenuse for closing up；Second segment groove is the radiused ramp groove with circular arc base, radiused ramp groove has while being the hypotenuse of slope identical second with pivoted arm node rubber layer inclined-plane, second hypotenuse is connected with the first hypotenuse of monolateral surface groove, and radiused ramp groove another side is the annular edge being connected with monolateral inclined-plane grooved ring side；Annular edge is got up with the second hypotenuse by circular sliding slopes, forms radiused ramp groove.
6. as claimed in claim 5 by the method for change pivoted arm node structure size adjusting rigidity, it is characterised in that：The ring side of described monolateral surface groove and the bound edge that the first hypotenuse is pivoted arm node rubber layer, ring side and the first hypotenuse are extended to respectively the end face of pivoted arm node metal inner sleeve and overcoat, form overall parcel shape.
7. a kind of pivoted arm node, pivoted arm node is combined by the elastic rubber of two section symmetrical structures and formed, including left metal-coating and left inner metal sleeve, integrally sulfuration has left rubber layer between left metal-coating and left inner metal sleeve, and right metal-coating and right inner metal sleeve, integrally sulfuration has right rubber layer between right metal-coating and right inner metal sleeve；Left rubber layer and right rubber layer are opposite diagonally disposed respectively, and left inner metal sleeve is also respectively taper hole and arranges in opposite directions with the endoporus of right inner metal sleeve；Characterized in that, the internal diameter of pivoted arm node inner sleeve is set as 90 ~ 93mm, external diameter is set as 128 ~ 132mm；The internal diameter of the diameter dimension of overcoat is set as 128 ~ 132mm, and external diameter is set as 170 ~ 173mm；And ensure that the matching of the diameter dimension of pivoted arm node inner sleeve and overcoat can cause the longitudinal rigidity of pivoted arm node to control in 11-13KN.mm-1, and deflection stiffness is reduced by controlling longitudinal rigidity, axial rigidity is controlled in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
8. pivoted arm node as claimed in claim 7, it is characterised in that：The inward at both ends of the rubber layer of described pivoted arm node inner sleeve digs out a circle groove；Wherein, the groove dimensions of minor diameter one are controlled in 15 ~ 30mm；The groove dimensions control that major diameter is one reduces the radial rigidity of pivoted arm node in 10 ~ 20mm by the form of digging groove, improves the axial rigidity of pivoted arm node so that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, axial rigidity control is in 6-8KN.mm-1, so as to reduce transverse load of the vehicle when high speed is by curve, reduce the bearing wear inside axle box.
9. pivoted arm node as claimed in claim 8, it is characterised in that：Described groove is multistage deep trench；Wherein, first paragraph is the monolateral surface groove being inwardly recessed from rubber layer port surface, and monolateral surface groove has while being the ring side with pivoted arm node diameter parallel, another side is inside the first hypotenuse for closing up；Second segment groove is the radiused ramp groove with circular arc base, radiused ramp groove has while being the hypotenuse of slope identical second with pivoted arm node rubber layer inclined-plane, second hypotenuse is connected with the first hypotenuse of monolateral surface groove, and radiused ramp groove another side is the annular edge being connected with monolateral inclined-plane grooved ring side；Annular edge is got up with the second hypotenuse by circular sliding slopes, forms radiused ramp groove.
10. pivoted arm node as claimed in claim 9, it is characterised in that：The ring side of described monolateral surface groove and the bound edge that the first hypotenuse is pivoted arm node rubber layer, ring side and the first hypotenuse are extended to respectively the end face of pivoted arm node metal inner sleeve and overcoat, form overall parcel shape.
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