CN113719580A - Method for improving service performance of transverse stop - Google Patents

Method for improving service performance of transverse stop Download PDF

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Publication number
CN113719580A
CN113719580A CN202110909347.8A CN202110909347A CN113719580A CN 113719580 A CN113719580 A CN 113719580A CN 202110909347 A CN202110909347 A CN 202110909347A CN 113719580 A CN113719580 A CN 113719580A
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CN
China
Prior art keywords
rubber
stopper
stop
transverse
bottom plate
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CN202110909347.8A
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Chinese (zh)
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CN113719580B (en
Inventor
唐维
邓娇
黄友剑
彭院中
张运珍
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Zhuzhou Times New Material Technology Co Ltd
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Zhuzhou Times New Material Technology Co Ltd
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Publication of CN113719580A publication Critical patent/CN113719580A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/22—Guiding of the vehicle underframes with respect to the bogies
    • B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
    • 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
    • F16F1/371—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification
    • F16F1/3713—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification with external elements passively influencing spring stiffness, e.g. rings or hoops
    • 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
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/3732—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having an annular or the like shape, e.g. grommet-type resilient mountings
    • 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
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F16F2224/025—Elastomers
    • 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
    • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/06—Stiffness
    • F16F2228/066—Variable stiffness
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/0023—Purpose; Design features protective

Abstract

The invention relates to the technical field of bearing and damping of rail vehicles, in particular to a method for improving the service performance of a transverse stop, which comprises a rubber stop, a rigid stop and a bottom plate, wherein the bottom plate is provided with a mounting hole positioned at the side part of the rubber stop, the transverse stop is fixedly connected with a transverse stop mounting seat at the mounting hole through a mounting bolt, the outer peripheral surface of the rubber stop is positioned at the inner side of the mounting hole and is provided with a lacking surface for preventing the rubber from interfering with the mounting bolt during deformation, the distance between the rubber stop and the mounting hole is increased through the lacking surface, so that the deformation volume space during rubber deformation is increased, and the rubber stop is prevented from bulging outwards due to deformation and contacting, extruding and rubbing with the mounting bolt due to interference.

Description

Method for improving service performance of transverse stop
Technical Field
The invention relates to the technical field of bearing and damping of railway vehicles, in particular to a method for improving the service performance of a transverse stop.
Background
The transverse stopper is a commonly used rubber-metal composite vibration damping limiting element, is widely applied to various vibration damping limiting places, and is very common in the bogie of a railway locomotive vehicle. At present, the main function of the transverse stops applied in rail rolling stock is to provide the vehicle with a shock-absorbing function; the variable rigidity requirement is met under different bearing loads; and has a rigid stop function under special working conditions.
In the prior art, the following patents relate to the design of transverse stops:
1. for example, the patent number is '201910806560.9', the patent name is 'a nonlinear variable stiffness compound rubber stopping method and compound rubber stopping', the nonlinear variable stiffness compound rubber stopping method and compound rubber stopping are disclosed, according to the transverse limiting requirement of a locomotive vehicle, a compound stopping formed by combining a top plate with a bump made of a high polymer material and a rubber stopping is adopted, transverse limiting is provided for the locomotive through the deformation of the rubber stopping under small deformation, and along with the increase of load, the rubber is slowly contacted with a tool at the top to present nonlinear change, and the rigidity can also present weak nonlinear change; after large deformation, the convex part on the top plate made of the high polymer material is contacted with a lower tool to realize a rigid stop function, and the convex part of the top plate is transversely contacted with rubber to also play a transverse limiting role. This patent is injectd the horizontal spacing variable rigidity of rolling stock through roof lug and rubber backstop cooperation, has that backstop rigidity adjustable in earlier stage, and the later stage adopts macromolecular material to inlay the method that provides relative hardness at product inside as the rigidity backstop, realizes that the comprehensive properties of backstop improves.
However, the lateral stop in this patent still has the following problems, as shown in fig. 1:
1) when the rubber stopper 2 bears a large load, the rubber stopper 2 can deform to enable the rubber to bulge towards the periphery, the larger the load borne by the rubber stopper 2 is, the larger the deformation of the rubber is, the more serious the rubber bulges towards the periphery, and when the deformation of the rubber reaches a certain position, the rubber part bulged out in the rubber stopper 2 is easily in repeated contact, extrusion and friction with adjacent iron pieces, and is particularly easy to contact, extrude and rub with mounting bolts beside the rubber part, so that the service life and the vibration damping performance of a product can be greatly reduced.
2) In this patent the rigid stop 3 is located above the base plate 4 and is normally not in contact with the base plate 4; the rigid stop 3 is positioned above the bottom plate 4, so that the process difficulty of product production is increased, and the material cost and the design cost are increased; in addition, the transverse stop has poor universality, and different rigid stops are inconvenient to arrange or replace according to the limit distance requirements of different products.
3) In the patent, the rubber free surface 22 at the opening at the middle part of the rubber stopper 2 is a single-section type straight surface parallel to the vertical middle axis L1 of the transverse stopper, and when the rubber stopper 2 bears a large load, the rubber free surface 22 of the single-section type straight surface is easily wrinkled and broken due to the overlarge load; and the joint of the rubber free surface 22 and the rubber stopper 2 is accumulated, folded and broken, so that the service life of the product is shortened.
2. The patent number "201820326785.5", the patent name "a transverse stopping structure and install rail vehicle bogie of this transverse stopping", disclose a transverse stopping structure and install rail vehicle bogie of this transverse stopping, transverse stopping structure includes the bottom plate and vulcanizes the rubber backstop on the bottom plate, still is provided with at least a set of rigid backstop on the bottom plate, the height of rubber backstop is greater than the height of rigid backstop, leave first clearance between rigid backstop and the rubber backstop, first clearance guarantees to leave the second clearance with the rigid backstop when the rubber backstop is compressed to the maximum compression. The utility model discloses optimized the structure of horizontal backstop, with rubber backstop and rigidity backstop integration, realized the integral design of rubber backstop and rigidity backstop, not only simple structure has satisfied vehicle lightweight's designing requirement moreover, the cost is reduced, but also effective control horizontal backstop decrement, for satisfying big axle load, little curve requirement, it is spacing to pass through or realize the rigidity under the strong wind condition at the vehicle minor curve, has improved vehicle lateral stability and the comfort level of taking.
Although this patent places a rigid stop on the base plate, it still has the following problems: as shown in fig. 2, in this patent, the rubber stopper 2 is located at the upper end of the middle of the bottom plate 4, the rigid stoppers 3 are located at the upper end of the bottom plate 4 and at both sides of the rubber stopper 2, and when a product is subjected to a large load, the rubber stopper 2 is pressed and deformed to bulge out towards the peripheral side, and not only can be in contact with, extruded and rubbed by the mounting bolts in the mounting holes 5 at the side part of the product, but also can be in contact with, extruded and rubbed by the rubber stopper 2, thereby greatly reducing the service performance and the service life of the product.
Disclosure of Invention
The invention aims to provide a method for improving the service performance of a transverse stopper, which is characterized in that a gap surface for preventing mutual interference with a mounting bolt during rubber deformation is arranged at the position, on the outer peripheral surface of the rubber stopper, of the inner side of the mounting hole, the distance between the rubber stopper and the mounting hole is increased, so that the deformation volume space during rubber deformation is increased, and the rubber stopper is prevented from bulging outwards due to deformation and being in interference with the mounting bolt to contact, extrude and rub.
In order to achieve the purpose, the invention provides the following technical scheme: the method for improving the service performance of the transverse backstop comprises the rubber backstop, the rigid backstop and a bottom plate, a mounting hole located on the side portion of the rubber backstop is formed in the bottom plate, the transverse backstop is fixedly connected with a transverse backstop mounting seat in the mounting hole through a mounting bolt, a lacking surface which prevents mutual interference between the rubber backstop and the mounting bolt when the rubber backstop is deformed is arranged at the inner side of the mounting hole on the outer peripheral surface of the rubber backstop, the distance between the rubber backstop and the mounting hole is increased through the lacking surface, so that the deformation volume space when the rubber is deformed is increased, and the rubber backstop is prevented from being contacted, extruded and rubbed due to the fact that the rubber backstop is deformed and bulges outwards to interfere with the mounting bolt.
Preferably, two notch surfaces located inside the mounting hole are uniformly arranged on the outer peripheral surface of the rubber stopper along the direction M with the vertical middle axis L1 of the transverse stopper as a reference, and the main arc surface and the notch surfaces in the direction N perpendicular to the direction M of the rubber stopper are transited through an arc.
Preferably, the lacking surface is a concave arc surface which is concave towards the vertical central axis L1 of the transverse stopping member, and the concave arc surface is arranged opposite to the mounting bolt and is arranged in the middle of the rubber stopping member in the M direction.
Preferably, the concave arc surface is set to be an arc concave arc surface concentric with the mounting hole, and the distance between the rubber stopper and the mounting hole can be adjusted by adjusting the radius R of the concave arc surface, so that the deformation requirement of the rubber stopper under different working conditions is met.
Preferably, the lacking surface is set to be a straight tangent plane perpendicular to the bottom plate, and the deformation requirement of the rubber stopper under different working conditions is met by adjusting the distance between the straight tangent plane and the mounting hole.
Preferably, the rubber stopper is arranged at the upper end of the bottom plate, the rigid stopper which forms an integrated component with the bottom plate is arranged between the rubber stopper and the bottom plate, and the rigid stopper is arranged in the middle of the bottom plate and the rubber stopper and extends upwards to an opening at the upper part of the rubber stopper; the outer side of the stop head of the rigid stop is provided as a straight surface or a tapered surface inclined from the base toward the vertical central axis L1 of the lateral stop.
Preferably, the rubber free surface of the rubber stopper at the opening is set to be more than two sections of multi-section type profile structures inclined towards the outer side of the rubber stopper, the multi-section type profile structures form a plurality of inflection points P, the variable rigidity requirement of the rubber stopper is met through the rubber free surface formed by the multi-section type profile structures, and the rubber free surface can be prevented from being wrinkled and deformed when the rubber stopper bears load.
Preferably, the rubber free surface body of the rubber stop consisting of a multi-section type surface structure is set to be a two-section type surface structure with a conical surface I connected with the upper end surface of the rubber stop and a conical surface II connected with the thin-layer rubber body on the top surface of the rigid stop; setting the angle B1 between the first tapered surface and the vertical central axis L1 of the lateral stop to be greater than the angle B2 between the second tapered surface and the vertical central axis L1 of the lateral stop; the height H4 of the first tapered surface is set to be smaller than the height H5 of the second tapered surface.
Preferably, a through groove for assembling the rigid stop is formed in the middle of the bottom plate, and a sunken positioning step is arranged at the upper end of the through groove; a positioning boss matched with the sunken positioning step is arranged on the rigid stop, and the rigid stop is assembled in the through groove of the bottom plate to form an integrated assembly with the bottom plate; the requirements of different limiting distances of the rigid stop in different application scenes can be met by adjusting the height H1 of the stop head of the rigid stop protruding out of the upper end of the bottom plate.
Preferably, the outer side of the bottom plate is provided with a sunken mounting step for assembling the mounting hole, and the rubber volume of the rubber stopper in different application scenes can be adjusted by adjusting the height H2 of the sunken mounting step, so that the integral rigidity of the rubber stopper can be adjusted.
The invention has the beneficial effects that:
1. according to the invention, the outer peripheral surface of the rubber stopper is positioned at the inner side of the mounting hole, namely, the lacking surface is arranged in the M direction of the rubber stopper, so that the distance between the rubber stopper and the mounting hole can be increased, the deformation volume space of the rubber stopper during deformation is further increased, the rubber stopper is prevented from being contacted, extruded and rubbed with the mounting bolt due to outward bulging of the rubber stopper during deformation on the premise of ensuring the use rigidity and the limiting function of a product, and the service life of the transverse stopper is prolonged.
2. The rigid stopping block is arranged below, namely the rigid stopping block is arranged in the through groove in the middle of the bottom plate, so that the rigid stopping block and the bottom plate form an integrated assembly structure. Compared with the scheme that the rigid stop is arranged above the transverse stop, the rigid stop is arranged below the transverse stop, the structure and the design are simpler, and the process requirement is reduced.
3. The rubber free surface of the rubber stop at the opening is set to be more than two sections of multi-section type surface structures inclined towards the outer side of the rubber stop, and compared with the rubber free surface of a single-section straight surface structure, when the rubber stop bears load, the rubber free surface formed by the multi-section type surface structures can realize variable rigidity, and the rubber free surface wrinkles of the rubber stop at the opening can be prevented or reduced from deforming, so that the service life of the transverse stop is prolonged.
4. A sunken positioning step is arranged at the upper end of the through groove of the bottom plate; and a positioning boss matched with the sunken positioning step is arranged on the rigid stop, and the rigid stop is assembled in the through groove of the base plate to form an integrated assembly with the base plate. This scheme is less than the used material of the mode that adopts whole material processing, and design cost is lower, and the commonality of bottom plate is high in the integral type subassembly simultaneously, and to the product of different rigid backstop height requirements, only need adjust the height H1 of rigid backstop protrusion in the backstop head of bottom plate upper end, can satisfy the different spacing distance's of rigid backstop requirement in the different application scenes, realizes the different spacing distance's of product requirement under the different application occasion.
5. The sunken mounting steps used for assembling the mounting holes are arranged on the outer side of the bottom plate, and the rubber volume of the rubber stopper in different application scenes can be met by adjusting the height H2 of the sunken mounting steps, so that the integral rigidity of the transverse stopper can be adjusted.
6. The rubber volume of the rubber stopper can be adjusted and the rigidity of the rubber stopper can be adjusted by adjusting the profile structure of the rigid stopper protruding out of the outer side surface of the stopper head at the upper end of the bottom plate; meanwhile, the bonding area of rubber and the rigid stop can be increased by adjusting the profile structure of the outer side surface of the stop head, the rubber stop is prevented from falling off, and the service life of the transverse stop is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a comparison document i in the background art.
Fig. 2 is a schematic structural diagram of a second comparison document in the background art.
FIG. 3 is an overall assembly view of the lateral stop according to one embodiment.
Fig. 4 is a schematic perspective view of a lateral stop according to a first embodiment.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a sectional view taken along the line a-a in fig. 5.
FIG. 7 is a schematic structural view of a bottom plate and a rigid stopper according to an embodiment.
Fig. 8 is a schematic structural view of a base plate and a rigid stopper in the second embodiment.
Fig. 9 is a schematic structural view of a bottom plate and a rigid stopper in the third embodiment.
Fig. 10 is a schematic perspective view of a lateral stopper according to a fourth embodiment.
Fig. 11 is a top view of fig. 10.
The reference numerals include: 1. a transverse stop; 2. a rubber stopper; 3. a rigid stop; 4. a base plate; 5. mounting holes; 6. a concave arc surface; 7. a main arc surface; 8. a first arc; 9. an opening; 10. a top surface; 11. a thin layer rubber body; 12. a second arc; 13. a first conical surface; 14. a second conical surface; 15. the upper end surface of the rubber stopper; 16. the outer side surface of the stop head part; 17. a sunken positioning step; 18. positioning the boss; 19. a stop head; 20. arc three; 21. a step is installed in a sinking mode; 22. a rubber free surface; 23. a central traction system; 24. the upper end surface of the bottom plate; 25. positioning the waist; 26. installing a bolt; 27. cutting into straight section.
Detailed Description
The invention is described in further detail below with reference to fig. 3-11.
Example one
As shown in fig. 3-7, the method for improving the usability of the transverse stopper includes that the transverse stopper 1 includes a rubber stopper 2, a rigid stopper 3 and a bottom plate 4, a mounting hole 5 located at the side of the rubber stopper 2 is formed in the bottom plate 4, the transverse stopper 1 is fixedly connected with a mounting seat of the transverse stopper 1 at the mounting hole 5 through a mounting bolt 26, a notch for preventing mutual interference with the mounting bolt 26 when the rubber deforms is arranged at the inner side of the mounting hole 5 on the outer peripheral surface of the rubber stopper 2, the distance between the rubber stopper 2 and the mounting hole 5 is increased through the notch, so that the deformation volume space when the rubber deforms is increased, and on the premise of ensuring the use rigidity and the limit function of a product, the rubber stopper 2 is prevented from bulging outwards due to deformation and interfering with the mounting bolt 26 to contact, extrusion and friction.
As shown in fig. 3, the transverse stopper 1 in the present embodiment is used in a central traction system 23 of a bogie, and is used for meeting the variable stiffness requirement under different load bearing loads, damping the vehicle, and having a rigid stopper function under special conditions. As shown in fig. 4 and 5, the outer peripheral surface of the rubber stopper 2 is located at the inner side of the mounting hole 5 and is provided with a notch surface, the notch surface in the embodiment is an axial concave arc surface 6 which is concave towards the vertical central axis L1 of the transverse stopper 1, the concave arc surface 6 and the mounting bolt 26 are oppositely arranged and are arranged at the middle part of the rubber stopper 2 in the M direction, the distance between the rubber stopper 2 and the mounting hole 5 can be increased, the deformation volume space of the rubber stopper 2 during deformation is further increased, the rubber stopper 2 is prevented from contacting with the mounting bolt 26 in the mounting hole 5 due to outward bulging due to deformation, extrusion and friction are avoided, and the service life of the transverse stopper 1 is prolonged.
As shown in fig. 5, the concave arc surface 6 is set to be an arc concave arc surface 6 concentric with the mounting hole 5, and the distance between the rubber stopper 2 and the mounting hole 5 can be adjusted by adjusting the radius R of the concave arc surface 6, so as to meet the deformation requirement of the rubber stopper 2 under different working conditions.
As shown in fig. 5, two concave arc surfaces 6 located inside the mounting hole 5 are uniformly arranged on the outer peripheral surface of the rubber stopper 2 along the M direction with the vertical middle axis L1 of the transverse stopper 1 as a reference, a main arc surface 7 in the N direction perpendicular to the M direction of the rubber stopper 2 is transited to the concave arc surfaces 6 through a first arc 8, and the radius r of the first arc 8 is set to be 3mm-8 mm. The rigidity of the rubber stopper 2 can be improved by transiting the main arc surface 7 and the concave arc surface 6 through the arc I8, and the rubber is prevented from being broken at the joint of the main arc surface 7 and the concave arc surface 6 when the rubber stopper 2 bears load; the radius r of the first arc 8 is set to be 3mm-8mm, if the radius r of the first arc 8 is set too small, for example, less than 3mm, the rubber at the position of the first arc 8 is easy to break and deform, and if the radius r of the first arc 8 is set too large, for example, greater than 8mm, the first arc 8 bulges outwards more, and when the rubber stopper 2 is loaded, the first arc 8 may contact with the mounting bolt 26 due to bulging and interfere with the mounting bolt 26. In this embodiment, the radius r of the first arc 8 is preferably set to 5 mm.
As shown in fig. 4 and 6, the rubber stopper 2 is disposed at the upper end of the bottom plate 4, the rigid stopper 3 which forms an integral assembly with the bottom plate 4 is disposed between the rubber stopper 2 and the bottom plate 4, the rigid stopper 3 is disposed at the middle of the bottom plate 4 and the rubber stopper 2 and extends upward to the opening 9 at the upper part of the rubber stopper 2, and the stopper head outer side surface 16 of the rigid stopper 3 is disposed as a straight surface. Compared with the scheme that the rigid stop dog 3 is arranged above the transverse stop dog 1, the rigid stop dog 3 arranged below the transverse stop dog is simpler in structure and design, and the process requirement is reduced.
As shown in fig. 6, the rubber free surface 22 of the rubber stopper 2 at the opening 9 is set to be more than two sections of multi-section type surface structures inclined towards the outer side of the rubber stopper 2, the multi-section type surface structures form a plurality of inflection points P, the variable rigidity requirement of the rubber stopper 2 is met through the rubber free surface 22 formed by the multi-section type surface structures, and the wrinkle deformation of the rubber free surface 22 when the rubber stopper 2 bears load can be avoided. Compared with the rubber free surface 22 with a single-section straight surface structure, when the rubber stopper 2 bears load, the rubber free surfaces 22 with more than two sections of conical surface structures can realize variable rigidity and gradually deform along the conical surfaces, so that the wrinkle deformation of the rubber free surfaces 22 at the opening 9 of the rubber stopper 2 can be avoided or reduced, and the service life of the transverse stopper 1 is prolonged.
As shown in fig. 6, the top surface 10 of the rigid stopper 3 at the opening 9 is arranged to be parallel to the straight surface of the upper end surface 15 of the rubber stopper, and a thin layer of rubber 11 is vulcanized on the top surface 10 of the rigid stopper 3 to protect the rigid stopper 3; the conical surface and the thin rubber body 11 are transited through a second arc 12. The thin-layer rubber body 11 can protect the rigid stop 3, so that the rigid stop 3 is prevented from being corroded by water or dust, and the service life is prolonged; conical surface and thin layer rubber body 11 pass through circular arc two 12 transition for rubber backstop 2 is when bearing load, and rubber is from conical surface to thin layer rubber body 11 department of being close to gradually at conical surface and the junction of thin layer rubber body 11, can prevent that the rubber between conical surface and the thin layer rubber body 11 from piling up when bearing load and breaking a discount.
As shown in fig. 4 and fig. 6, the rubber free surface 22 of the rubber stopper 2, which is composed of a multi-section profile structure, is specifically designed as a two-section tapered surface structure, namely a tapered surface one 13 connected with the upper end surface 15 of the rubber stopper and a tapered surface two 14 connected with the thin-layer rubber body 11 on the top surface 10 of the rigid stopper 3; the angle B1 between the first conical surface 13 and the vertical middle axis L1 of the transverse stopper 1 is set to be larger than the angle B2 between the second conical surface 14 and the vertical middle axis L1 of the transverse stopper 1, so that the opening 9 of the rubber stopper 2 is gradually enlarged from the rigid stopper 3 to the upper opening, and compared with a single straight surface structure or a structure with gradually reduced openings, the rubber stopper 2 in the scheme has the advantage that the free rubber surface 22 at the opening 9 is not easy to accumulate and fold when the rubber stopper 2 is loaded; the height H4 of the first conical surface 13 is set to be smaller than the height H5 of the second conical surface 14, so that the height of the second conical surface 14 with larger rubber volume is larger, the rigidity of the rubber stopper 2 can be increased, and the service life is prolonged.
As shown in fig. 7, a through groove for assembling the rigid stopper 3 is formed in the middle of the bottom plate 4, and a sunken positioning step 17 is arranged at the upper end of the through groove; and a positioning boss 18 matched with the sunken positioning step 17 is arranged on the rigid stopper 3, and the rigid stopper 3 is assembled in the through groove of the bottom plate 4 to form an integrated component with the bottom plate 4. The rigid stop 3 may be assembled with the base plate 4 as a one-piece assembly by interference press-fitting or welding, which is preferred in this embodiment. Under the condition of ensuring that the installation height H3 of the installation bolt 26 is not changed, the volume of rubber in the rubber stopper 2 can be adjusted by adjusting the height H2 of the sunken positioning step 17, so that the adjustment of the overall rigidity of the transverse stopper 1 is realized; set rigid stop 3 and bottom plate 4 into the integral type subassembly, it is still less than the used material of the mode that adopts whole material processing, and design cost is lower, and bottom plate 4's commonality is high in the integral type subassembly simultaneously, and to the product of different rigid stop 3 height requirements, only need adjust rigid stop 3 protrusion in the height H1 of the backstop head 19 of bottom plate 4 upper end, can satisfy the requirement of the different spacing distance of rigid stop 3 in the different application scenes.
As shown in fig. 7, the requirement of different limiting distances of the rigid stopper 3 in different application scenes can be met by adjusting the height H1 of the stopper head 19 of the rigid stopper 3 protruding out of the upper end of the bottom plate 4; the outer circumferential surface of the stop head 19 is in transition with the upper end surface 24 of the base through a circular arc three 20. The limiting distance in different scenes can be realized by adjusting the height H1 of the stop head 19, and the applicability is strong.
As shown in fig. 7, a sunken installation step 21 for assembling the installation hole 5 is arranged on the outer side of the bottom plate 4, and the adjustment of the rubber volume of the rubber stopper 2 in different application scenes can be met by adjusting the height H2 of the sunken installation step 21, and the adjustment of the overall rigidity of the rubber stopper 2 is realized.
Example two
As shown in fig. 8, the present embodiment is different from the first embodiment in that the stopper head outer side surface 16 is formed as a tapered surface inclined from the bottom plate 4 toward the vertical center axis L1 of the transverse stopper 1, so that the volume of the rubber in the rubber stopper 2 can be increased, and the rigidity of the transverse stopper 1 can be increased.
EXAMPLE III
As shown in fig. 9, the present embodiment is different from the second embodiment in that a positioning waist portion 25 recessed toward a vertical central axis L1 of the transverse stopper 1 is provided on the stopper head outer side surface 16, and the rubber stopper 2 vulcanizes rubber at the positioning waist portion 25, so that on one hand, the positioning waist portion 25 can increase the rubber bonding area between the rubber stopper 2 and the rigid stopper 3, so that the connection between the rubber stopper 2 and the rigid stopper 3 is more stable, and the service life of the transverse stopper 1 is increased; on the other hand, the positioning waist part 25 is arranged in the same M direction of the rubber stopper 2 and the concave cambered surface 6, so that the rigidity of the concave cambered surface 6 can be reinforced, and the overall rigidity of the rubber stopper 2 is improved.
Example four
As shown in fig. 10 to 11, the difference between this embodiment and the third embodiment is that the lacking surface is set to be perpendicular to the straight cut surface 27 of the bottom plate 4, the process of this solution is simple, and the deformation requirement of the rubber stopper 2 under different working conditions can be adapted by adjusting the distance between the straight cut surface 27 and the mounting hole 5.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.

Claims (10)

1. The method for improving the service performance of the transverse stop comprises the steps that the transverse stop (1) comprises a rubber stop (2), a rigid stop (3) and a bottom plate (4), a mounting hole (5) located on the side portion of the rubber stop (2) is formed in the bottom plate (4), the transverse stop (1) is fixedly connected with a mounting seat of the transverse stop (1) at the mounting hole (5) through a mounting bolt (26), and the method is characterized in that a lacking surface which prevents mutual interference between the rubber stop and the mounting bolt (26) when the rubber is deformed is arranged at the inner side of the mounting hole (5) on the outer peripheral surface of the rubber stop (2), the distance between the rubber stop (2) and the mounting hole (5) is increased through the lacking surface, so that the deformation volume space when the rubber is deformed is increased, and the rubber stop (2) is prevented from bulging outwards due to deformation and being interfered with the mounting bolt (26) to contact, squeeze and rub.
2. The method for improving the service performance of the transverse stopper as claimed in claim 1, wherein two notch surfaces located inside the mounting hole (5) are uniformly arranged on the outer peripheral surface of the rubber stopper (2) along the direction M with reference to a vertical middle axis L1 of the transverse stopper (1), and a main arc surface (7) in the direction N perpendicular to the direction M of the rubber stopper (2) is transited to the notch surfaces through an arc I (8).
3. The method for improving the service performance of the transverse stopper as claimed in claim 2, wherein the notch surface is set as a concave arc surface (6) which is concave toward the vertical central axis L1 of the transverse stopper (1), and the concave arc surface (6) is set opposite to the mounting bolt (26) and is set in the middle of the rubber stopper (2) in the M direction.
4. The method for improving the service performance of the transverse stopper as claimed in claim 3, wherein the concave arc surface (6) is set to be a circular arc concave arc surface (6) concentric with the mounting hole (5), and the distance between the rubber stopper (2) and the mounting hole (5) can be adjusted by adjusting the radius R of the concave arc surface (6), so as to adapt to the deformation requirement of the rubber stopper (2) under different working conditions.
5. The method for improving the service performance of the transverse stopper as claimed in claim 2, wherein the lacking surface is set to be perpendicular to the straight tangent surface (27) of the bottom plate (4), and the deformation requirement of the rubber stopper (2) under different working conditions is met by adjusting the distance between the straight tangent surface (27) and the mounting hole (5).
6. The method for improving the service performance of the transverse stopper as claimed in any one of claims 1 to 5, wherein the rubber stopper (2) is arranged at the upper end of the bottom plate (4), the rigid stopper (3) which forms an integral component with the bottom plate (4) is arranged between the rubber stopper (2) and the bottom plate (4), and the rigid stopper (3) is arranged in the middle of the bottom plate (4) and the rubber stopper (2) and extends upwards to an opening (9) at the upper part of the rubber stopper (2); the stop head outer side surface (16) of the rigid stop (3) is set to be a straight surface or a conical surface inclined from the bottom plate (4) to a vertical middle axis L1 of the transverse stop (1).
7. The method for improving the service performance of the transverse stopper as claimed in claim 6, wherein the rubber free surface (22) of the rubber stopper (2) at the opening (9) is arranged to be more than two sections of multi-section type profile structures inclined towards the outer side of the rubber stopper (2), the multi-section type profile structures form a plurality of inflection points P, the requirement of the rubber stopper (2) on variable rigidity is met through the rubber free surface (22) formed by the multi-section type profile structures, and the wrinkle deformation of the rubber free surface (22) when the rubber stopper (2) bears load can be avoided.
8. The method for improving the usability of a transverse stop as claimed in claim 7, characterized in that the free rubber surface (22) of the rubber stop (2) is designed as a profile structure with two-step conical surfaces, namely a first conical surface (13) connected to the upper end surface (15) of the rubber stop and a second conical surface (14) connected to the thin rubber body (11) of the top surface (10) of the rigid stop (3); setting the angle B1 between the first conical surface (13) and the vertical central axis L1 of the transverse stop (1) to be greater than the angle B2 between the second conical surface (14) and the vertical central axis L1 of the transverse stop (1); the height H4 of the first tapered surface (13) is set to be smaller than the height H5 of the second tapered surface (14).
9. The method for improving the service performance of the transverse stopper as claimed in claim 8, wherein a through groove for assembling the rigid stopper (3) is formed in the middle of the bottom plate (4), and a sunken positioning step (17) is arranged at the upper end of the through groove; a positioning boss (18) matched and assembled with the sunken positioning step (17) is arranged on the rigid stop (3), and the rigid stop (3) is assembled in the through groove of the bottom plate (4) to form an integrated assembly with the bottom plate (4); the requirement of different limiting distances of the rigid stop (3) in different application scenes can be met by adjusting the height H1 of the stop head (19) of the rigid stop (3) protruding out of the upper end of the bottom plate (4).
10. The method for improving the service performance of the transverse stopper as claimed in claim 9, wherein a sunken installation step (21) for assembling the installation hole (5) is arranged outside the bottom plate (4), and the rubber volume of the rubber stopper (2) in different application scenes can be adjusted by adjusting the height H2 of the sunken installation step (21), so that the adjustment of the integral rigidity of the rubber stopper (2) is realized.
CN202110909347.8A 2021-08-09 2021-08-09 Method for improving service performance of transverse backstop Active CN113719580B (en)

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CN110454532A (en) * 2019-08-29 2019-11-15 株洲时代新材料科技股份有限公司 A kind of nonlinear variable-stiffness compounded rubber backstop method and compounded rubber backstop
CN110469609A (en) * 2019-08-29 2019-11-19 株洲时代新材料科技股份有限公司 A kind of the compounded rubber metal stopper method and compounded rubber backstop of the hard backstop of band
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JPH11132278A (en) * 1997-10-31 1999-05-18 Kayaba Ind Co Ltd Front fork
CN201338619Y (en) * 2008-12-29 2009-11-04 南车南京浦镇车辆有限公司 Transverse stop dog for bogie
CN103317990A (en) * 2012-03-22 2013-09-25 东海橡塑工业株式会社 Upper support for vehicle suspension
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CN203702956U (en) * 2014-03-11 2014-07-09 株洲时代新材料科技股份有限公司 Integrated double-peak type variable-stiffness rubber stopper
CN106476838A (en) * 2015-08-28 2017-03-08 株洲时代新材料科技股份有限公司 A kind of normal contact prevents the method for steel spring fracture and vertical backstop
CN106476835A (en) * 2015-08-28 2017-03-08 株洲时代新材料科技股份有限公司 A kind of vertical backstop with wearing plate and the method preventing steel spring fracture
CN106476836A (en) * 2015-08-28 2017-03-08 株洲时代新材料科技股份有限公司 A kind of method preventing steel spring fracture and the vertical backstop of concave shaped
CN107972741A (en) * 2016-10-25 2018-05-01 上汽通用五菱汽车股份有限公司 A kind of preceding damper upper support structure
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CN110469609A (en) * 2019-08-29 2019-11-19 株洲时代新材料科技股份有限公司 A kind of the compounded rubber metal stopper method and compounded rubber backstop of the hard backstop of band
CN210859636U (en) * 2019-10-23 2020-06-26 北京航材百慕合力高分子材料有限公司 Conical spring for hoisting equipment under vehicle

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