CN205365058U - Shock attenuation wheel - Google Patents

Abstract

The utility model provides a shock attenuation wheel, this application bearing, the gear, interior slider compresses tightly the piece and annular hinge passes through retainingf key fixed mounting in the keyway of connecting axle, gear one side has a bearing in proper order, an interior slider compresses tightly piece and an annular hinge, the foreign steamer is fixed at the connecting axle both ends, foreign steamer outer wall cover has foreign steamer rubber, the extension spring the foreign steamer with correspond between the annular hinge, respectively there is a quarter butt interior round of cushion both sides, quarter butt one end links to each other with interior round of cushion through the pivot, the quarter butt other end links to each other with the stock, two stock cross sections link to each other through the pivot, stock one end is passed through the screw and is linked to each other with the foreign steamer, the stock other end passes through the connecting piece and links to each other with annular hinge. This application utilizes the umbrella stand to change axial change into radial change, and the very big characteristics of radial delta combine wheel and bumper shock absorber and directly make shock attenuation wheel moreover, and this shock attenuation wheel has better mechanical properties, and the wheel diameter can change along with the heavy object size to variable assist's size.

Description

A kind of damping wheel

Technical field

This utility model relates to shock-absorption device field, particularly relates to a kind of damping wheel.

Background technology

When passing by uneven road surface or pit, wheel can produce certain impact with pothole, and driver have to be avoided by this impact, and car body is fatal especially, it is therefore necessary to removes this impact.The simplest way alleviating impact is exactly directly adopt spring to be connected with the suspension of axle, and this is also maximum on common tricycle.Although such design can save a lot of cost, also can actually produce certain effect, but this simply realizes with simple spring after all.When spring is compressed and decontrols suddenly, spring self also can produce certain impulsive force, although this impulsive force is much smaller than the power making spring-compressed, but is still that fatal for body construction.And the body construction above spring can make spring produce back and forth to beat due to the relation of gravity, this beating can increase along with impulse period and weaken gradually.So this simple structure cannot extensive use and on the verge of being replaced.

Current maximum be shock absorber, the difference of shock absorber and common spring shock absorption has added damping exactly on jackshaft, and the form of damping has a lot, maximum or fluid damps.Its motion principle is: point chamber and add special fluid in intermediate piston.When shock absorber is pressurizeed by we, not only to overcome the elastic force of spring, the damping produced when also overcoming internal piston fluid by aperture, thus can significantly reduce the continuous chattering that simple spring shock-absorbing produces, make vehicle body more steady.Simultaneously as the damping of fluid, the intensity of spring is allowed to have also been obtained certain raising.If the stroke of spring is too big when shock-absorbing, then the local that can cause car body is uneven, and the local part of car is totally unfavorable.So shock absorber absorbs the damping force when damping force impacted is greater than resilience, when stroke is again smaller than resilience.

When car body suspention produces Large Amplitude Motion, inside expansion link, produce huge pressure, and damping hole is only small, can be thus that the temperature of intracavity fluid raises, so that the viscosity of fluid is thinning.Thinning rear fluid is just diminished by the resistance of damping hole, and whole suspension system is totally unfavorable by this, and this phenomenon is called " damping decline ".The method of reply " damping decline " has a lot, and most common is oversize piston cylinder diameter or the size reducing damping hole.Another fatal problem of shock absorber is exactly the bubble that damping oil produces when constantly flowing, and the method improving this defect is to manufacture a plenum chamber, to stop the generation of bubble, even if producing bubble, also can be eliminated by gases at high pressure.

Above-mentioned mechanical type shock absorber, its principle is all directly add flexible member on axle or wheel, produces certain elastic force, thus reaching the effect of damping.Such structure is very useful, installs also without too large space, but owing to being directly add flexible member in the radial direction of axle, the requirement of strength of flexible member is high, act simultaneously on the power on axle and the life-span of axle also can be made to be under some influence relatively greatly.

Utility model content

For problem above, this utility model provides a kind of damping wheel, the application utilizes umbrella stand that axial change can change into change radially, and the feature that amount of change radially is very big, wheel is combined with amortisseur and directly makes damping wheel, this damping wheel has good mechanical property, and wheel diameter can be changed along with weight size, thus changing the size of power-assisted.nullWeight is more heavy，The power that guide rod produces is more big，Simultaneous wheels footpath reduces，Thus can make wheel that the power on ground is increased，For reaching this purpose，This utility model provides a kind of damping wheel，Including extension spring、Foreign steamer、Foreign steamer rubber、Inside take turns cushion block、Quarter butt、Stock、Gear、Inner slide compressing member、Annular hinge and connection axle，Described bearing、Gear、Inner slide compressing member and annular hinge are fixedly mounted in the keyway connecting axle by retainingf key，Described gear side has a bearing successively、One inner slide compressing member and an annular hinge，Described foreign steamer is fixed on connection axle two ends by nut and elastomeric pad，Described foreign steamer outer wall is cased with foreign steamer rubber，Described extension spring is between foreign steamer with corresponding annular hinge，Described interior cushion block of taking turns has at least 4，Described interior cushion block both sides of taking turns are respectively arranged with a quarter butt，Described quarter butt one end is connected with interior cushion block of taking turns by rotating shaft，The described quarter butt other end is connected with stock，Each interior two stocks taken turns corresponding to cushion block cross one another，Two stock infalls are connected by rotating shaft，Described stock one end is connected with foreign steamer by screw，The described stock other end is connected with annular hinge by connector.

Further improvement of the utility model, when all interior maximum diameters of axle caused when cushion block close-packed arrays coordinates of taking turns to be equal to external wheel diameter, if needing to promote load-carrying properties, outer slide directly can be made foreign steamer, this premise is that the maximum diameter of axle offer caused when all cushion block close-packed arrays coordinate is equal to external wheel diameter, to ensure that four-wheel contacts ground simultaneously.

This utility model relates to a kind of damping wheel and has the advantage that

1, this utility model adopts the symmetrical structure of similar umbrella frame, and it mainly constitutes by organizing rod member more, and left and right two slide block can produce relative sliding, and wherein outside slide block is fixed, and middle is attached by spring.Mechanism is made up of one group of scissors mechanism, two quarter butts set up at top in order that allow this take turns can have certain axial laminating with ground, simultaneously in order to make this angle axially fitted controlled, it is a cushion block with rubber outer in mechanism's outermost end, so can ensure that reliable earth-catching property；When front-wheel is universal wheel, when trailing wheel is damping wheel, in turning process, the cushion block of inner side damping wheel is subject to gravity more than outside damping wheel, so will result in certain wheel footpath poor, although this footpath difference of taking turns can allow car body produce trace inclination, but can improve the lateral sliding that in turning process, wheel produces with ground well.Owing to the power produced between ground and car body is partially converted into and slides axially by this structure, and this slide axially and cushioned by spring, alleviating axle and the burden of spring strength aspect to a certain extent.

2, axial change can be changed into change radially by this utility model.And amount of change radially is very big, owing to radial dimension can change, so cat ladder performance is expanded: make adjustable by left end on-fixed slide block, two gaE slide can be carried out axial restraint, make the temporary inefficacy of spring.The spacing that thus can make wheel outer rim increases, such that it is able to stick into stair, it is achieved cat ladder function.Comparing the tri-star wheel mechanism of existing machinery formula cat ladder, the performance of damping wheel cat ladder is better, owing to there being many groups of (more than 20 groups) structures on circumference so the impact that cat ladder produces also can much smaller than tri-star wheel.Inside block can again become slidably (dial difference for one and get final product execution) after cat ladder action completes, and such wheel is returned to normal diameter, and has spring shock absorption effect.

3, this utility model is when inner slide (slide block compressing member) is by when dialling the poor axial restraint carrying out rigidity, often in group, wheel cushion block spacing increases, now interior wheel diameter is up to 300mm, according to the stair data that reality is measured, cat ladder demand can be met, utilize two cushion block spacing that wheel blocks stair angle when climbing building, form fulcrum, carry out rolling cat ladder again through foreign steamer.

If 4 load-carryings are excessive, exceed the limit of spring, then the damage of mechanism can be caused.Therefore the cushion block of outer end is designed by the application, when load-carrying is excessive, outer end many groups cushion block can circumferentially form arrangement, and this arrangement can become tight along with the increase of stress, wheel diameter can be changed along with weight size, thus changing the size of power-assisted.Weight is more heavy, and the power that guide rod produces is more big, and simultaneous wheels footpath reduces, and thus can make wheel that the power on ground is increased.

5, the design of wheel can make the suspension of wheel adopt simply rigid suspended.When weight is overweight, each small cushion block meeting close-packed arrays in wheel outer ring, form the wheel of rigidity to support car body, the existence of foreign steamer has also ensured bearing capacity further.

6, wheel outer ring cushion block can produce trace floating, it is possible to compensates road surface.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation；

Fig. 2 is this utility model cushion block schematic diagram；

Illustrate:

1, extension spring；2, foreign steamer；3, foreign steamer rubber；

4, interior cushion block is taken turns；5, quarter butt；6, stock；

7, retainingf key；8, nut and elastomeric pad；9, screw；

10, bearing；11, gear；12, inner slide compressing member；

13, annular hinge；14, axle is connected.

Detailed description of the invention

Below in conjunction with drawings and Examples, utility model is described in detail:

This utility model provides a kind of damping wheel, the application utilizes umbrella stand that axial change can change into change radially, and the feature that amount of change radially is very big, wheel is combined with amortisseur and directly makes damping wheel, this damping wheel has good mechanical property, wheel diameter can be changed along with weight size, thus changing the size of power-assisted.Weight is more heavy, and the power that guide rod produces is more big, and simultaneous wheels footpath reduces, and thus can make wheel that the power on ground is increased.

nullAs this utility model one embodiment，This utility model provides a kind of damping wheel as illustrated in fig. 1 and 2，Including extension spring 1、Foreign steamer 2、Foreign steamer rubber 3、Inside take turns cushion block 4、Quarter butt 5、Stock 6、Gear 11、Inner slide compressing member 12、Annular hinge 13 and connection axle 14，Described bearing 10、Gear 11、Inner slide compressing member 12 and annular hinge 13 are fixedly mounted in the keyway connecting axle 14 by retainingf key 7，Described gear 11 side has a bearing 10 successively、One inner slide compressing member 12 and an annular hinge 13，Described foreign steamer 2 is fixed on connection axle 14 two ends by nut and elastomeric pad 8，Described foreign steamer 2 outer wall is cased with foreign steamer rubber 3，Described extension spring 1 is between foreign steamer 2 with corresponding annular hinge 13，Described interior cushion block 4 of taking turns has at least 4，Described interior cushion block 4 both sides of taking turns are respectively arranged with a quarter butt 5，Described quarter butt 5 one end is connected with interior cushion block 4 of taking turns by rotating shaft，Described quarter butt 5 other end is connected with stock 6，Each interior two stocks 6 taken turns corresponding to cushion block 4 cross one another，Two stock 6 infalls are connected by rotating shaft，Described stock 6 one end is connected with foreign steamer 2 by screw 9，Described stock 6 other end is connected with annular hinge 13 by connector.

nullAs this utility model one the best specific embodiment，This utility model provides a kind of damping wheel，Including extension spring 1、Foreign steamer 2、Foreign steamer rubber 3、Inside take turns cushion block 4、Quarter butt 5、Stock 6、Gear 11、Inner slide compressing member 12、Annular hinge 13 and connection axle 14，Described bearing 10、Gear 11、Inner slide compressing member 12 and annular hinge 13 are fixedly mounted in the keyway connecting axle 14 by retainingf key 7，Described gear 11 side has a bearing 10 successively、One inner slide compressing member 12 and an annular hinge 13，Described foreign steamer 2 is fixed on connection axle 14 two ends by nut and elastomeric pad 8，Described foreign steamer 2 outer wall is cased with foreign steamer rubber 3，Described extension spring 1 is between foreign steamer 2 with corresponding annular hinge 13，Described interior cushion block 4 of taking turns has at least 4，Described interior cushion block 4 both sides of taking turns are respectively arranged with a quarter butt 5，Described quarter butt 5 one end is connected with interior cushion block 4 of taking turns by rotating shaft，Described quarter butt 5 other end is connected with stock 6，Each interior two stocks 6 taken turns corresponding to cushion block 4 cross one another，Two stock 6 infalls are connected by rotating shaft，Described stock 6 one end is connected with foreign steamer 2 by screw 9，Described stock 6 other end is connected with annular hinge 13 by connector，When all interior maximum diameters of axle caused when cushion block close-packed arrays coordinates of taking turns to be equal to external wheel diameter，If needing to promote load-carrying properties，Outer slide directly can be made foreign steamer，This premise is that the maximum diameter of axle offer caused when all cushion block close-packed arrays coordinate is equal to external wheel diameter，To ensure that four-wheel contacts ground simultaneously.

Assuming that four wheels works and load-carrying one ton hour simultaneously, the power acted on single damping wheel cushion block is about 2500N, then initial tensile force produced by spring have to be larger than or equal to 2165N.(in order to alleviate stock force in radial, major part power being given spring, the scissors mechanism scissor angle that initial two stocks are constituted is 120 °)

Strength co-mputation: assume the spring index C=2 of extension spring, then:

Curvature correction factor $K=\frac{0.615}{C}+\frac{4C-1}{4C-4}=2.0575;$

Checking according to data, the parameter of silicomangan spring wire is: [τ]=471Mpa；[σ]_b=785Mpa；G=78500Mpa；E=19600Mpa；HRC is between 45 to 50.

Then wire diameter is $d=1.6\sqrt{\frac{KFC}{\[\mathrm{\τ}\]}}=0.0069m;$

Rigidity Calculation: $n=\frac{{\mathrm{Gd}}^4\mathrm{\λ}}{8{\mathrm{FD}}_2^3}=15.78;$

Then in spring, length is that L=(n+2) d=126≤140mm meets the requirements.

Can be obtained by structure arithmetic, wheel footpath byDrop toProcess in, the axial internal clearance of spring is about 24mm, then required spring rate is about 90N/mm.

The above; it it is only preferred embodiment of the present utility model; it is not the restriction that this utility model is made any other form, and any amendment made according to technical spirit of the present utility model or equivalent variations, still fall within this utility model scope required for protection.

Claims (2)

1. null1. a damping wheel，Including extension spring (1)、Foreign steamer (2)、Foreign steamer rubber (3)、Inside take turns cushion block (4)、Quarter butt (5)、Stock (6)、Bearing (10)、Gear (11)、Inner slide compressing member (12)、Annular hinge (13) and connection axle (14)，It is characterized in that: described bearing (10)、Gear (11)、Inner slide compressing member (12) and annular hinge (13) are fixedly mounted in the keyway connecting axle (14) by retainingf key (7)，Described gear (11) side has a bearing (10) successively、One inner slide compressing member (12) and an annular hinge (13)，Described foreign steamer (2) is fixed on connection axle (14) two ends by nut and elastomeric pad (8)，Described foreign steamer (2) outer wall is cased with foreign steamer rubber (3)，Described extension spring (1) is between foreign steamer (2) with corresponding annular hinge (13)，Described interior cushion block (4) of taking turns has at least 4，Described interior cushion block (4) both sides of taking turns are respectively arranged with a quarter butt (5)，Described quarter butt (5) one end is connected with interior cushion block (4) of taking turns by rotating shaft，Described quarter butt (5) other end is connected with stock (6)，Each interior two stocks (6) taken turns corresponding to cushion block (4) cross one another，Two stock (6) infalls are connected by rotating shaft，Described stock (6) one end is connected with foreign steamer (2) by screw (9)，Described stock (6) other end is connected with annular hinge (13) by connector.
2. 2. a kind of damping wheel according to claim 1, it is characterised in that: when all interior maximum diameters of axle caused when cushion block (4) close-packed arrays coordinates of taking turns to be equal to foreign steamer (2) diameter.