CN204944854U - Spindle assemblies buffer gear on Tire testing instrument - Google Patents

Abstract

The utility model discloses spindle assemblies buffer gear on a kind of Tire testing instrument, solve double-row angular contact bal bearing Internal and external cycle when spindle assemblies is subject to external impact and easily produce the problem of drift angle, its drip irrigation device is spindle assemblies buffer gear on a kind of Tire testing instrument, include the bearing be arranged on main shaft, the inner ring end of described bearing has resilient snubber, reaches the technique effect of external impacts on buffering spindle assemblies.

Description

Spindle assemblies buffer gear on Tire testing instrument

Technical field

The utility model relates to Tire testing field, particularly relates to the structure of the improvement bearing working situation of spindle assemblies on a kind of Tire testing instrument.

Background technology

The principle of work of tyre uniformity test device common is at present: be arranged on by tire to be detected on a main shaft being provided with lower wheel rim, main shaft rotates under the drive of servomotor, the in addition upper wheel rim that arrange corresponding to lower wheel rim, upper wheel rim be arranged on one relative to main shaft can near or away from upper spindle assemblies on, upper spindle assemblies is when testing beginning, move integrally under powered attendant-controlled wheelchairs promotion, until the tapered shaft end be arranged on spindle assemblies docks with the taper axis hole on main shaft and compresses, now go up wheel rim and tire to be detected compresses and seals, the now wheel hub of wheel rim simulation tire installation up and down, by the effect to the tyre inflating simulation inner tube of a tyre, the regular loading wheel of a geometric configuration parallel with main-shaft axis is set installing the mechanism side of tire to be detected, force cell is installed in the rotating shaft of loading wheel, detect radial force and axial force that in the rotary course of tire belt dynamic load wheel, loading wheel bears, to provide tyre evenness experimental data.

In the process that whole experiment is carried out, when there is the defects such as salient point in the tyre surface of the tire detected, because the force value between loading wheel and detection tire is very large, the upper spindle assemblies installing wheel rim can bear larger radial and axial power, and the direction of axial force may be two-way, in prior art, the mode of this bidirectional axial force and radial force that solves normally by installing the bearing of particular form on upper spindle assemblies, multiplex is that biserial angle roller bearing coordinates double-row angular contact bal bearing, but, the tiltable of the Internal and external cycle of the angular contact bearing of biserial is limited, when there is inclination angle in the Internal and external cycle of bearing, by the running accuracy in serviceable life and bearing place axle of affecting bearing, and on Tire testing instrument, the defect of tyre surface is unpredictable often, it is real-time change, thus, at tyre surface defectiveness, when the external force that upper spindle assemblies bears has a sudden change, the Internal and external cycle of double row ball bearing can be driven to produce sudden change inclination angle, this inclination angle probably directly makes rolling body generation plastic yield even broken, this will affect the serviceable life of bearing and the running accuracy of upper spindle assemblies, and then affect the test result of Tire testing instrument, in addition, when on upper spindle assemblies drives, wheel rim snaps in tire, the tapered shaft end docked up and down can produce an axial impact force instantaneously, this impulsive force will finally be passed on upper spindle assemblies.

Utility model content

The purpose of this utility model overcomes or slow down the part at least above-mentioned shortcoming, hereby provides following technical scheme:

Spindle assemblies buffer gear on a kind of Tire testing instrument, include the bearing be arranged on main shaft, it is characterized in that, the inner ring end of described bearing has resilient snubber, described resilient snubber includes the elastic body of the inner ring end being butted on described bearing, described elastic body is provided with some spring eyes, described some spring eyes are evenly arranged in the equal position of the centre of gyration of bearing described in distance on described elastic body, buffer spring is provided with in described spring eye, described buffer spring one end is butted on bottom described spring eye, the other end is butted on the inner ring end of described bearing.

By adopting technique scheme, during the fluctuation strong on main shaft of described resilient snubber, can first absorb a part of impulsive force, reduce external force to fluctuate the skew of Internal and external cycle of the described bearing brought, prevent the Internal and external cycle of described bearing because external impacts produces inclination angle, prevent Bearing inner rolling body under surge pressure, producing plastic deformation even broken, ensure the running accuracy of described bearing place main shaft.

The utility model is set to further: described bearing adopts double-row angular contact bal bearing.

By adopting technique scheme, described double-row angular contact bal bearing can bear radial force and two-way axial force simultaneously.

Accompanying drawing explanation

Describe these and other aspect of the present utility model in further detail now with reference to appended accompanying drawing, it is depicted as currently preferred embodiment of the present utility model.Wherein:

Fig. 1 is the structure cut-open view of spindle assemblies buffer gear on the utility model Tire testing instrument;

Fig. 2 is the structural representation of resilient snubber.

Accompanying drawing illustrates: 1, main shaft; 2, resilient snubber; 3, double-row angular contact bal bearing; 31, outer ring; 32, inner ring; 33, rolling body; 4, inner ring keeper; 21, elastic body; 22, spring eye; 23, buffer spring.

Embodiment

Referring to figs. 1 through Fig. 2, the utility model embodiment is described further.

Spindle assemblies buffer gear on a kind of Tire testing instrument, include main shaft 1, the double-row angular contact bal bearing 3 be arranged on main shaft 1, the resilient snubber 2 being butted on double-row angular contact bal bearing 3 end and inner ring keeper 4, wherein: the rolling body 33 that double-row angular contact bal bearing 3 includes outer ring 31, inner ring 32 and is placed between the two, inner ring 32 is fixed on main shaft 1, resilient snubber 2 is arranged between the location ladder of inner ring 32 end and main shaft 1, resilient snubber 2 is the sheathed outer round surface with main shaft 1 closely, and inner ring keeper 4 is butted on the other end of inner ring 32.

Main shaft 1 connects tapered shaft end, when main shaft 1 drives tapered shaft end to dock with the tapered shaft end on the spindle assemblies being placed with lower wheel rim, main shaft 1 can bear a larger axial impact, in addition, on the tire of detection during existing defects, main shaft 1 also can bear certain radial force, double-row angular contact bal bearing 3 can bear radial force and bidirectional axial force, but, double-row angular contact bal bearing 3 is bearings that a kind of precision is higher, when foreign impacts fluctuation is larger, inner ring 32 and outer ring 31 can produce a little inclination angle, the wearing and tearing of bearing are aggravated, cause the service life reduction of bearing, and cause the running accuracy of main shaft 1 to reduce, when external impacts is larger, even can directly rolling body 33 be crushed, the material that the utility model introduces resilient snubber 2(resilient snubber 2 can make common rubber, elastoplast etc. have arbitrarily the material of elastic shock attenuation function, also the spring that rigidity is larger can be made, the material of resilient snubber 2 is the common practise of those skilled in the art, repeat no more herein, also limit), when main shaft 1 bears external impact force, first pass through closely sheathed with the resilient snubber 2 on main shaft 1, resilient snubber 2 utilizes the elastic deformation of self to absorb part vibrations and impulsive force, the impulsive force that double-row angular contact bal bearing 3 is accepted reduces also steadily, prevent from producing inclination angle between the outer ring 31 of double-row angular contact bal bearing 3 and inner ring 32, prevent rolling body 33 from producing plastic yield even broken, extend the serviceable life of double-row angular contact bal bearing 3, ensure the running accuracy of main shaft 1, the accuracy of detection of the whole Tire testing instrument of final guarantee and machine life.

Preferably, resilient snubber 2 includes elastic body 21, some spring eyes 22 and buffer spring 23, its elastomer 21 is butted on the end of inner ring 32, spring eye 22 to be arranged on elastic body 21 on the equidistant position of the distance centre of gyration, buffer spring 23 is provided with in spring eye 22, during installation, buffer spring 23 is pressed in bottom spring eye 22 and in spring eye 22 between inner ring 32 end, when double-row angular contact bal bearing 3 is subject to external impacts, first through the buffering shock-absorbing of buffer spring 23 and elastic body 21, external impacts is cushioned, born by inner ring 32 again, prevent from impacting and excessively cause production inclination angle unstable wear between the inner ring 32 of double-row angular contact bal bearing 3 and outer ring 31.

The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (2)

1. spindle assemblies buffer gear on a Tire testing instrument, include the bearing be arranged on main shaft, it is characterized in that, the inner ring end of described bearing has resilient snubber, described resilient snubber includes the elastic body of the inner ring end being butted on described bearing, described elastic body is provided with some spring eyes, described some spring eyes are evenly arranged in the equal position of the centre of gyration of bearing described in distance on described elastic body, buffer spring is provided with in described spring eye, described buffer spring one end is butted on bottom described spring eye, the other end is butted on the inner ring end of described bearing.

2. spindle assemblies buffer gear on described Tire testing instrument according to claim 1, is characterized in that: described bearing adopts double-row angular contact bal bearing.