CN100344951C - Tyre testing apparatus - Google Patents
Tyre testing apparatus Download PDFInfo
- Publication number
- CN100344951C CN100344951C CNB2004100882427A CN200410088242A CN100344951C CN 100344951 C CN100344951 C CN 100344951C CN B2004100882427 A CNB2004100882427 A CN B2004100882427A CN 200410088242 A CN200410088242 A CN 200410088242A CN 100344951 C CN100344951 C CN 100344951C
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- China
- Prior art keywords
- aforementioned
- tire
- collar bush
- testing apparatus
- base plate
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- Expired - Fee Related
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- Testing Of Balance (AREA)
Abstract
Provided is a tire testing device capable of realizing with a low weight and low manufacturing cost as much as possible, a housing support structure having a high characteristic frequency and indispensable for performing highly accurate measurement over a high frequency band. This tire testing device has a spindle housing device for supporting rotatably a spindle device where a tire is mounted detachably, and a support device for supporting the housing device on the fixing side. In the testing device, the support device has a bottom plate fixed on the fixing side, and a support leg part erected on the bottom plate, whose upper part is fixed to the spindle housing device, and the support leg part is formed in the shape wherein the sectional area in a horizontal plane is reduced gradually toward the upward direction.
Description
Technical field
The present invention relates to a kind of tyre testing apparatus.
Background technology
As this tyre testing apparatus, the known discrete consistance test unit that the power of measuring the tire generation is arranged.
The consistance test constitutes, under the state that tire is pushed against with rotatable state on the swing roller, make tire rotation with some method, and to tire radially with the turning axle direction of fore-and-aft direction and tire in either direction, perhaps simultaneously the variation of a plurality of directions is carried out instrumentation.
Again, the dynamic equilibrium test of the amount of unbalance of instrumentation tire is also known, although its need to make tire the mechanism of rotating under the state that is not pressed on the swing roller and to since imbalance act on tire or the mechanism that the rotary centrifugal force on the main shaft of tire detects be installed, sometimes by constituting with aforementioned same machine.
As the tyre testing apparatus that is used to carry out this consistance test and dynamic equilibrium test, for example the spy opens the tyre testing apparatus put down in writing in flat 11-223571 communique and the Te Kai 2002-350293 communique by known.
These test units in the past are to have taken in bearing in the collar bush by some cover supporting construction supporting, on the main shaft that is being mounted pivotably via this bearing tire are installed, and make its test unit with the rotating speed rotation of regulation.
In consistance test, trying hard to recommend that tire is prescribed usually is pressed on the swing roller, and therefore, at this moment, the power that produces between tire and swing roller is carried out worthwhile obtaining to the change of the power that the pushing force and the tire of aforesaid regulation produces.
The consistance test unit is that the force checking device by the either side that is installed in collar bush one side or swing roller one side is measured the change of this power that produces between tire and swing roller, and tries to achieve the test unit of the change of the power that tire produces after the pushing force of deduction regulation.
Again, in dynamic equilibrium test, usually tire is not urged on swing roller, therefore, at this moment, come because the uneven rotary centrifugal force that acts on tire or be equipped with on the main shaft of tire is measured by the force checking device that is installed in collar bush one side, union goes out residual amount of unbalance (with reference to JIS B0905).
In consistance test, usually, be that the rotating speed at tire is about 60rpm, promptly the low speed about 1Hz is implemented down.In the change of the power that tire produces, measure at needs under the situation of high order composition frequency of rotating speed of tire, the frequency range that needs to measure be about maximum 10Hz below.
In dynamic equilibrium test, usually, the rotating speed of tire is tens of scopes to 1500rpm, promptly count Hz to about the 20Hz, compare with consistance test and can think at a high speed, but owing to only measure tire synchronization composition and get final product, thus can think need the frequency range of measurement be about maximum 20Hz below.
Again, state before use under the situation of measurement device power of such formation, by the bearing of supporting spindle with take in the rigidity of the cover of bearing and the supporting construction of supporting sleeve etc. and the mechanical system natural vibration frequency of its weight decision is present in the frequency band that measure or under near the situation it, the influence of being resonated is arranged and the problem that causes the power accuracy of detection to descend.
For getting rid of the influence of the resonance under the mechanical system natural vibration frequency, preferably, must be arranged on more than 3 to 4 times of highest frequency that measure to the mechanical system natural vibration frequency.
Therefore, in consistance test or dynamic equilibrium test, consider from the necessary frequency range of aforesaid measurement, must for example be made as 30 to the mechanical system natural vibration frequency to more than the 60Hz, and, the mechanical system natural vibration frequency is remained on this more than frequency, in the scope of conventional art, can think to reach with comparalive ease.
But, in recent years, wish to obtain precision measure well with the actual situation of using tire similarly, make the conforming test unit under the state of tire high speed rotating, that is, and so-called high speed consistance test unit.
Can think that necessary tire rotational speed is up to about 2000rpm in the test of high speed consistance, promptly about 35Hz.Therefore, if need to measure the high order composition frequency of tire rotational speed in the change of the power that tire produces, the highest frequency that then needs to measure will increase.
But as previously mentioned, the upper limit that can carry out the frequency range that precision measures is well determined by the mechanical system natural vibration frequency.
Therefore, concerning the test of high speed consistance, the highland keeps the mechanical system natural vibration frequency to can be described as the important technology of the upper limit of the measurable frequency of decision as far as possible.
As the method that keeps the mechanical system natural vibration frequency high, for example, open in the tyre testing apparatus of putting down in writing in flat 11-223571 communique and the Te Kai 2002-350293 communique aforementioned spy, methods such as using high bearing of rigidity and force detector is arranged, but about the cover supporting construction, although be actually important key element, do not state clearly especially for keeping the mechanical system natural vibration frequency high.
Usually, increase to constitute the cover supporting construction key element thickness of slab or increase countermeasure such as component parts and can think effectively, if but enforcement will cause the increase of weight and manufacturing cost at a venture.
Summary of the invention
In view of above problem, the object of the invention is to provide a kind of can being implemented in alap weight and manufacturing cost to carry out the necessary tyre testing apparatus with cover supporting construction of high natural vibration frequency of high-precision instrumentation in the high frequency band.
For reaching aforementioned purpose, the present invention takes following mechanism.Promptly, the invention is characterized in, rotate the collar bush device of supporting freely and this covering device is bearing in the tyre testing apparatus of fulcrum arrangement of fixation side loading and unloading the main shaft device of fit a tyre freely having, aforementioned fulcrum arrangement has: be fixed on the base plate of fixation side and upright be located on the base plate and top is fixed on cradle portion on the aforementioned collar bush device, the shape of aforementioned brackets portion forms, and the past more vertical direction of sectional area in its surface level reduces more.
The sectional area of the only steel plate part of just removing hollow space that wherein, the sectional area of said cradle portion refers to.
According to the present invention of aforementioned formation, owing to have base plate, thus the changes of section of supporting construction is reduced, thus the structure whole rigidity can be improved.
That is, in the method that with foot bolt etc. cradle portion individually is fixed on the ground, there is following several problem, is difficult to guarantee high rigidity.
(1) area at the position that contacts with ground can not be obtained greatly, so be unfavorable for guaranteeing rigidity.
(2) because the restriction in space etc., foot bolt size (being sectional area) must diminish, and its result is unfavorable for guaranteeing rigidity.
(3) the unusual difficulty of operation such as the smoothing between each cradle portion during practice of construction.If under the state of smoothing by halves, will between ground and support ground connection position, produce the space, thereby produce local distortion etc. and the rigidity at this position is extremely descended.That is it is big, to be subjected to the influence of on-the-spot construction situation, technical merit, foundation situation.
But, in the present invention,, at first prepare firm base plate for avoiding the problems referred to above, by modus operandis such as welding cradle portion directly is bonded on the base plate then, with foot bolt etc. base plate is securely fixed on the ground again.If do like this, just can avoid foregoing each problem, and, because firm base plate arranged, just can as (3) as described above, not be subjected to the influence of construction situation (grounding parts flatness etc.) of ground etc. big, the result can stably guarantee high rigidity.
Normally, the method that improves the dynamic stiffiness of mechanical system is alleviating or the increase of rigidity by the weight part of fixed part (particularly away from), but according to the present invention, when upwards reducing sectional area, be not make weight reduction under the big situation of rigidity loss, as a result, help the raising of dynamic stiffiness (frequency response function a kind of, with the function representation that helps the ratio (power/displacement) of the power of shaking and displacement as frequency).
Preferably, aforementioned brackets portion is made of a plurality of posts.
By making such post structure, the space of bottom is vacated, so the maintenance of machinery and adjustment just become easy.
Preferably, aforementioned post is configured to, and uniformly-spaced supporting aforementioned collar bush device, and is configured on the circumferencial direction of aforementioned collar bush device, and the mutual distance of the past more vertical lower of each kernel of section of many aforementioned posts is big more.
By making such structure, can further improve natural vibration frequency.That is, by cradle portion being configured in vertical direction more up more towards installing the skewed of central shaft, with respect to the situation that has just reduced sectional area, particularly about the heel of supporting construction, can obtain big rigidity, the result helps the raising of natural vibration frequency.
According to the present invention, can be implemented in alap weight and manufacturing cost and carry out the necessary cover supporting construction of high-precision instrumentation in the high frequency band with high natural vibration frequency.
Description of drawings
[Fig. 1] Fig. 1 is the overall diagram of tyre testing apparatus of the present invention.
[Fig. 2] Fig. 2 be tyre testing apparatus of the present invention want portion's front view.
[Fig. 3] Fig. 3 is the vertical view of the fulcrum arrangement of tyre testing apparatus of the present invention.
[Fig. 4] Fig. 4 is the A-A line cut-open view of Fig. 2.
[Fig. 5] Fig. 5 is the B-B line cut-open view of Fig. 2.
[Fig. 6] Fig. 6 is the FEM analytic model figure that is used to ask natural vibration frequency.
Embodiment
Below, based on accompanying drawing embodiments of the present invention are described.
Shown in Figure 1 is the overall diagram of tyre testing apparatus.This test unit has: the main shaft device 2 of fit a tyre 1 (omitting in Fig. 1, so with reference to Fig. 2) is rotated the collar bush device 3 of supporting freely to loading and unloading freely, this covering device 3 is bearing in the fulcrum arrangement 4 of fixation side.In this embodiment, fixation side is meant earth foundation surface.And then this test unit also has gives tire rotation that is assemblied on the collar bush device 3 and the drum apparatus 5 of loading.
Aforementioned main shaft device 2 above-below directions separation has upper spindle 6 and the bottom main shaft 7 that is configured on the same vertical central freely.Upper spindle 6 rotations are arranged on the lower end of elevating lever 8 freely, and these elevating lever 8 easy on and off are arranged on the lifting pressure cylinder 9 movably.Lifting pressure cylinder 9 is fixed on upright being located at as on the framework on the ground of fixation side 10.
Be provided with upper flange 11 in the lower end of aforementioned upper spindle 6, be provided with lower flange 12, clamping tire between this top and the bottom flange 11,12 in the upper end of bottom main shaft 7.
Aforementioned collar bush device 3 forms tubular, is supporting aforementioned bottom main shaft 7 freely by bearing rotations such as (omitting diagram).On this collar bush device 3, be provided with the load cell (omitting diagram) that constitutes by conforming three force cells that are used to measure tire etc.
Aforementioned fulcrum arrangement 4 has: be fixed on as the base plate on the earth foundation surface of fixation side 13, upright be located on the base plate 13 and top is fixed on cradle portion 14 on the aforementioned collar bush device 3.This cradle portion 14 forms (its details is by Fig. 2 described later～5 explanations) with the shape that the sectional area in its surface level upwards reduces gradually.
Be provided with driving and reversing mechanism 19 between aforementioned drum sleeve 16 and pallet 15, aforementioned cylinder 17 outer peripheral faces are pressed on the tire outer peripheral face that is assemblied on the main shaft device 2 by trying hard to recommend of being prescribed of this driving and reversing mechanism 19.This driving and reversing mechanism 19 is made of hydraulic cylinder.On drum sleeve 16, be provided with the drum sensor 20 of the shift position that is used to detect cylinder 17.
The details of the aforementioned fulcrum arrangement 4 of expression in Fig. 2～5.The base plate 13 of fulcrum arrangement 4 is a slab, is securely fixed on the ground on the fixation side by bindiny mechanisms such as bolt 21 around it.In this embodiment, base plate 13 makes thickness 100mm by dimetric steel plate, and heart portion is provided with circular hole 22 therein, with four on the every limit of periphery, interior all 4 altogether 16 be bolted on the ground.
On the upper end of post 23, in the mode that links four posts 23 by being welded with fixed frame 24.Fixed frame 24 forms the quadrangle of the similar figures littler than base plate 13, and is fixed with aforementioned collar bush device 3 in the heart portion therein.
Fixed frame 24 have dimetric lower panel 25 and than this lower panel 25 little be dimetric upper board 26, quadrangular barrel 27 welding by hollow between the upper and lower plates 25,26 are fixing.Between the outer circumferential surface of this quadrangular barrel 27 and lower panel 25, be provided with rib 28.
So aforementioned post 23 disposes in the mode that circumferencial direction equally spaced supports aforementioned collar bush device 3.And, dispose in the mutual big more mode of distance of the past more vertical lower in center in each cross section of a plurality of posts 23.(in Fig. 2, representing the center in each cross section of post 23 with the single-point line) between the lower end and earth foundation surface that are bearing in the collar bush device 3 on the fulcrum arrangement 4, is formed with the space of safeguarding usefulness.
And then from Fig. 1～5 as can be known, cradle portion 14 forms the shape that the sectional area in its surface level upwards reduces gradually.
According to the embodiment of aforementioned formation, the past more vertical direction sectional area of fulcrum arrangement 4 reduces more, thus, has the effect away from the weight of the part of the ground of the point of fixity that becomes above-mentioned supporting construction that alleviates one of natural vibration frequency main reasons for decrease.
Again, because cradle portion 14 has adopted by the centre of form with closed section and past more vertical direction cross section more near the structure of 4 posts 23 supporting of collar bush device central shaft, so can be under the state that keeps high natural vibration frequency, bottom at collar bush device 3 is provided with the space, thereby favourable at the aspects such as maintenance of device.
Again, because fulcrum arrangement 4 has adopted to wait by welding and has been attached on the base plate 13 with thicker thickness of slab, and with ground bolt 21 etc. this base plate 13 is attached at structure on the ground, so when thereby the distortion that suppresses these supporting constructions improves the structure whole rigidity, can not be subjected to considerable influences such as the construction situation ground of ground to keep high natural vibration frequency.
[embodiment]
With respect to fulcrum arrangement shown in Figure 6, make the FEM analytic model, and obtain natural vibration frequency.Its result is about 275Hz with respect to the natural vibration frequency of the vibration mode (heel) of low order, has obtained the practical enough numerical value of.
Again, the present invention is not limited only to shown in the aforementioned embodiments, and for example, cradle portion also can be for not being a plurality of posts structures, but the truncated cone of a hollow that on central part, collar bush is supported.
Claims (3)
1. tyre testing apparatus, have: to loading and unloading the fulcrum arrangement that the main shaft device of fit a tyre freely rotates the collar bush device of supporting freely and this covering device is bearing in fixation side, it is characterized in that, aforementioned fulcrum arrangement has: be fixed on the base plate of fixation side and upright be located on the base plate and top is fixed on cradle portion on the above-mentioned collar bush device, the shape of aforementioned brackets portion forms, and the past more vertical direction of sectional area in its surface level reduces more.
2. tyre testing apparatus as claimed in claim 1 is characterized in that aforementioned brackets portion is made of a plurality of posts.
3. tyre testing apparatus as claimed in claim 2, it is characterized in that aforementioned post is configured to, on the circumferencial direction of aforementioned collar bush device uniformly-spaced to support aforementioned collar bush device, and be configured to, the mutual distance of the past more vertical lower of each kernel of section of many aforementioned posts is big more.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP361127/03 | 2003-10-21 | ||
| JP361127/2003 | 2003-10-21 | ||
| JP2003361127A JP4015095B2 (en) | 2003-10-21 | 2003-10-21 | Tire testing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609576A CN1609576A (en) | 2005-04-27 |
| CN100344951C true CN100344951C (en) | 2007-10-24 |
Family
ID=34641219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100882427A Expired - Fee Related CN100344951C (en) | 2003-10-21 | 2004-10-21 | Tyre testing apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4015095B2 (en) |
| CN (1) | CN100344951C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMO20050121A1 (en) * | 2005-05-18 | 2006-11-19 | Sicam Srl | LIFTING DEVICE FOR MOUNTING WHEELS FOR VEHICLES ON BALANCING MACHINES. |
| DE102006005790B4 (en) * | 2005-12-16 | 2014-10-23 | Horst Warkotsch | Holding device for a rim of a vehicle wheel |
| DE102006060200A1 (en) * | 2006-12-18 | 2008-06-19 | Schenck Rotec Gmbh | Device for supporting rotors, in particular propeller shafts, in a balancing machine |
| JP5011328B2 (en) * | 2009-03-03 | 2012-08-29 | 株式会社神戸製鋼所 | Tire rolling resistance measuring device |
| JP5011361B2 (en) * | 2009-09-25 | 2012-08-29 | 株式会社神戸製鋼所 | Tire testing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189969A (en) * | 1968-03-22 | 1970-04-29 | Hermann Herbert Beissbarth | Wheel Balancing Machines |
| US4046018A (en) * | 1976-09-09 | 1977-09-06 | Lasiter Glennis W | Wheel balancing apparatus |
| US4448073A (en) * | 1982-06-28 | 1984-05-15 | Louison Patry | Wheel balancing device |
| EP0305613A1 (en) * | 1987-09-02 | 1989-03-08 | G.R. Potts Associates Inc. | High speed tyre (uniformity) testing device |
| CN1228533A (en) * | 1997-12-16 | 1999-09-15 | 国际计测器株式会社 | Device for measuring tyre uniformity and/or dynamic balance |
-
2003
- 2003-10-21 JP JP2003361127A patent/JP4015095B2/en not_active Expired - Fee Related
-
2004
- 2004-10-21 CN CNB2004100882427A patent/CN100344951C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189969A (en) * | 1968-03-22 | 1970-04-29 | Hermann Herbert Beissbarth | Wheel Balancing Machines |
| US4046018A (en) * | 1976-09-09 | 1977-09-06 | Lasiter Glennis W | Wheel balancing apparatus |
| US4448073A (en) * | 1982-06-28 | 1984-05-15 | Louison Patry | Wheel balancing device |
| EP0305613A1 (en) * | 1987-09-02 | 1989-03-08 | G.R. Potts Associates Inc. | High speed tyre (uniformity) testing device |
| CN1228533A (en) * | 1997-12-16 | 1999-09-15 | 国际计测器株式会社 | Device for measuring tyre uniformity and/or dynamic balance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4015095B2 (en) | 2007-11-28 |
| JP2005127751A (en) | 2005-05-19 |
| CN1609576A (en) | 2005-04-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071024 Termination date: 20151021 |
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| EXPY | Termination of patent right or utility model |