AU2001261435A1 - Truck suspensions incorporating asymmetric leaf springs - Google Patents
Truck suspensions incorporating asymmetric leaf springsInfo
- Publication number
- AU2001261435A1 AU2001261435A1 AU2001261435A AU2001261435A AU2001261435A1 AU 2001261435 A1 AU2001261435 A1 AU 2001261435A1 AU 2001261435 A AU2001261435 A AU 2001261435A AU 2001261435 A AU2001261435 A AU 2001261435A AU 2001261435 A1 AU2001261435 A1 AU 2001261435A1
- Authority
- AU
- Australia
- Prior art keywords
- spring
- leaf
- axle
- cantilever
- called
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Description
TRUCK SUSPENSIONS INCORPORATING ASYMMETRIC LEAF SPRINGS
SPECIFICATION
Background of the Invention
This invention relates generally to innovations and improvements in axle suspensions for trucks and particularly to suspensions for the front steering axles of trucks wherein the axles are hollow and fabricated by welding. However, the invention also has application to rear axles and also to solid cast or forged solid axles. In all applications of the invention roll stability of the vehicles is materially enhanced.
The suspensions of the present invention incorporate asymmetric leaf springs extending in a fore-and-aft direction with one end pivotally attached to a mounting bracket on a generally fore-and-aft extending side frame member of a chassis with the opposite end suitably secured to the frame member. As used herein, the term "asymmetric" is not meant to denote different lengths of the cantilever limbs of the leaf spring, but rather their differing respective spring rates. At a location intermediate its opposite ends the leaf spring is suitably mounted on the adjacent end of an axle. If desired, the resilient support provided by the leaf spring may be augmented by the incorporation in the suspension of an air spring thereby providing the vehicle with "air ride" features.
The asymmetric leaf springs used in suspensions according to the invention are of two types. One type combines at least one leaf that extends the full length of the spring from end to end and at least one additional shorter leaf which extends from the end which is pivotally
attached to a spring mounting bracket to the axle. Examples of such a leaf spring are disclosed in U.S. Serial No. 09/522,585, filed March 10, 2000, the disclosure of which is hereby incorporated herein by reference. The other type of spring incorporates a tapered convoluted single-leaf leaf spring which extends for the full length of the spring and is formed with a relatively thick cantilever limb extending in one direction from the axle to the pivotally attached end and a second relatively thin cantilever limb extending in the opposite direction from the axle to its opposite end. The thicker cantilever limb has a relatively high spring rate and is substantially stiffer than the relatively thin cantilever limb which has a relatively low spring rate and is substantially 'less stiff. An example- of such a leaf spring is disclosed in U.S. Patent No. 5,938,221, August 17, 1999, issued to Wilson, the disclosure of which is hereby incorporated herein by reference. Alternatively, features of both types could be used, as disclosed in the aforementioned U.S. Serial No. 09/522,585. It will be understood that the construction of the suspension on one side of the vehicle supporting one side frame member on one end of an axle is duplicated on the opposite side of the vehicle.
In its preferred embodiments the axle suspensions of the present invention are characterized by being relatively light weight, low cost with high roll stability. Accordingly, the object of the invention, generally stated, is to provide axle suspensions which exhibit high roll stability and which are relatively light weight and commercially producible at relatively low cost from readily available components .
A more specific object of the invention is the provision of light weight, low cost axle suspensions by combining the high torsion stiffness of a hollow axle body with the torsion action provided by a leaf spring mounted on
the axle with one cantilever limb having a stiffness substantially greater than the stiffness of the other cantilever limb, preferably in a ratio of at least 4 to 1.
Certain other objects of the invention will be apparent to those skilled in the art in view of the following detailed description taken in connection with the accompanying drawings wherein:
Brief Description of the Drawings FIG. 1 is an isometric view of a preferred embodiment of the invention wherein a pair of chassis side frame members are shown supported on an axle by fore-and-aft extending leaf springs in combination with air springs; FIG. 2 is a side elevational view of the suspension shown in FIG. 1;
FIG. 3 is a side elevational view of the suspension system shown in FIG. 1 wherein the air spring is mounted directly over the axle;
FIG. 4 is a diagrammatic view illustrating the steering kinematics of the fore-and-aft leaf spring incorporated in the suspensions of FIGS. 1-3;
FIG. 5 is a side elevational view of the fore-and-aft leaf spring incorporated in the suspensions shown in FIGS. 1-3; FIG. 6 is a side elevational view of a tapered convolute single-leaf leaf spring that may be used in the suspensions of FIGS. 1-3 in place of the composite fore-and- aft leaf spring of FIGS. 1-5; and
FIG. 7 is a top plan view of the spring shown in FIG. 6.
Referring to FIGS. 1 and 2 a suspension is indicated generally at 5 therein comprising a pair of fore-and-aft extending chassis side frame members indicated generally at 6-6 mounted on opposite ends of an axle indicated generally at 7. The axle 7 may, - for example, be a hollow fabricated
front steering axle of a truck. The chassis is supported on the axle 7 in part by composite fore-and-aft extending leaf springs indicated generally at 8-8 and a pair of air springs indicated generally at 10-10. The fabricated axle 7 is hollow in cross section and of known type being fabricated by welding instead of being cast or forged with a solid cross section. Being hollow the fabricated axle 7 is characterized by having high torsional resistance considering its relatively low weight. It will be understood that other forms of axles may be used such as the hollow axle housings used in connection with rear drive axles.
Each fore-and-aft extending spring 8 is formed by a relatively thin full length single-leaf leaf spring 11 which may have a stiffness, of about zero to four hundred pounds per inch combined with a relatively thick shorter leaf spring 12 which may have a stiffness of about one thousand or more pounds per inch, but always maintaining at least a four-to-one stiffness ratio between the front cantilever limb and rear cantilever limb. The leaf 12 is formed with an eye 13 at one end and an offset raised platform 14 at the opposite end on which one of the air springs 10 is mounted. If desired, the platform 14 may be formed as part of the top pad of 19 the axle clamping structure. The full length leaf spring 11 is formed with an eye 15 on one end which wraps around the eye 13 on the shorter leaf 12. At its opposite end the full length spring 11 is formed with an eye 16 which is pivotally connected to one end of a shackle 17 in known conventional manner. The interfitting eyes 13 and 15 constitute a so-called "military wrap" which is pivotally connected to the lower end of a bracket indicated generally at 18 the upper end of which is mounted on the side of a frame member 6. As is well known in the art, a military wrap connection provides redundancy in the event that one of
the interfitting spring eyes breaks or fails for some reason.
Adjacent its distal end on which the platform 14 is formed the relatively thick leaf 12 and the full length leaf 11 are mounted on the axle 7 by known axle clamping structure as shown in FIGS. 1-3. Preferably each air spring 10 is mounted in known manner on a platform 14 with the upper end being attached to a bracket 20 mounted on a side frame member 6. Alternatively, the air spring 10 can be mounted directly over the axle 7 in the manner shown in FIG. 3. However, mounting the air spring 10 on the platform 14 to the side of the axle 7 opposite the bracket 18 is preferred since it provides an increased mechanical advantage for the air spring to support the vertical load. In the arrangement shown in FIGS . 1 and 2 the air spring 10 and the cantilever limb indicated generally at 21 in FIG. 2 will together provide most of the vertical load support for the chassis while the cantilever limb indicated generally at 22 in FIG. 2 and formed in the full length leaf 11 may provide less than 10% of the support for the vertical load. The main function of the relatively thin full length leaf 11 is to react to side loads on the suspension and provide redundancy. This two-piece composite spring has the same high rate differentiation as stated in Wilson patent No. 5.938,221 dated August 17, 1999 the disclosure of which is incorporated by reference herein.
The suspension arrangement shown in FIGS. 1 and 2 with the air spring 10 mounted on the platform 14 and offset from the center line of the front steering axle 7 provide beneficial results in the steering kinematics when axle 7 is a front steering axle. Thus, it is generally known in the art that springs arc about an imaginary point in space which is called the "Ross" point which in turn determines the so- called "Ross Line" . The Ross point is indicated at R in FIG. 4 and the Ross Line is indicated at RL. It is known
that the Ross Line should be as flat and long as possible and the Ross Line geometry should match the drag link geometry of the vehicle.
As shown in FIG. 4, as the composite spring 8 is loaded the fact that the air spring 10 is cantilevered behind the axle center causes the limb 11 to rotate towards more caster. This produces a long and flat Ross Line (RL) . When the air spring 10 is mounted over the axle 7 as shown in FIG. 3 the Ross Line is relatively short and steep and the Ross Point is located inwardly (i.e. to the right) of the eye of the spring 8.
The suspension configuration shown in FIGS. 1 and 2 with the air springs 10 mounted on the platforms 14 in cantilever behind the center line of the axle 7 allows the fore-and-aft extending spring 8 to be designed to fit existing vehicle packages. Thus, the front eyes 13, 15 of the springs may be fitted to an existing hanger. The front cantilever limb 22, the rear cantilever limb 21 and the load on the air spring 10 may be optimized to the point where the Ross Line characteristics may be tuned to match the existing steering linkage installation of the vehicle.
While the composite springs 8 offer the several advantages referred to above they may be replaced by tapered convolute single-leaf leaf springs indicated generally at 25 in FIGS. 6 and 7. The construction and functioning of the spring 25 are shown and described in detail in U.S. Patent 5,938,221 dated August 17, 1999 the disclosure of which is incorporated by reference herein. The spring 25 is formed with an eye 26 at one end which may be attached to the mounting bracket 18 (FIGS. 2-3). The front cantilever limb of the spring 25 is indicated generally at 27 and extends from the eye 26 to an aperture 28 located within the mid portion of the spring. As shown, the cantilever limb 27 extends in a generally continuous direction from the eye 26 to the point 28 so that no corrugations are formed within
the limb. The cantilever limb which extends from the point 28 to the end of the spring indicated at 30 is indicated at 31. The cantilever limb 31 extends in a generally continuous direction from the point 28 to its end 30 with no corrugations formed therein.
The cantilever limb 27 includes an axle area indicated generally at 32. This seat area includes the bottom most point 28 of the tapered convolute leaf spring 25 when the leaf spring is connected to a vehicle chassis frame. A reverse arch portion in the cantilever limb 31 is indicated generally at 33. It will be noted that the thickness of the spring 25 is greatest in the cantilever limb 27 and tapers to a thinner thickness in the cantilever limb 31. Except 'for the end 30 the spring 25 has a uniform width as shown in FIG. 7.
Claims (9)
1. In a suspension system for supporting a fore-and-aft extending frame member on one side of a vehicle chassis on the adjacent end of an axle of the vehicle which is hollow and torsionally rigid, which system is duplicated on the opposite side of the vehicle, comprising: a frame bracket mounted on said frame member for supporting one end of a spring; a spring end support mounted on said frame member in spaced relationship from said frame bracket for supporting the other end of the spring; an asymmetric leaf spring having one end pivotally attached to said frame bracket and its opposite end connected to said spring end support; and means for attaching said leaf spring at a place intermediate its opposite ends to said hollow axle end whereby said asymmetric leaf spring is divided into a first cantilever limb on one side of the center line of said hollow axle and a second cantilever limb on the opposite side of said hollow axle center line; the improvement comprising, one of said cantilever limbs having a stiffness substantially greater than the stiffness of the other cantilever limb.
2. In the suspension called for in claim 1 having the improvement called for therein, said cantilever limb having the greater stiffness having a stiffness at least four times greater than the stiffness of the other cantilever limb.
3. In the suspension as called for in claim 1 having the improvement called for therein, said asymmetric spring comprises at least one leaf that extends the full length of said spring and at least one shorter leaf that forms one leaf .of said cantilever limb having said greater stiffness.
4. In the suspension as called for in claim 3 having the improvement called for therein, the end of said stiffer cantilever limb having a military wrap pivotal attachment to said frame bracket .
5. In the suspension as called for in claim 3 having the improvement called for therein, said shorter leaf having an end portion extending over said full length leaf adjacent to said axle and on the side thereof opposite said frame bracket, and an air spring mounted on said end portion extending in chassis supporting relationship between said end portion and said frame member.
6. In the suspension called for in claim 3 having the improvement called for therein wherein an air spring is mounted on said shorter leaf and over said axle end and extends in chassis supporting relationship between said asymmetric spring and said frame member.
7. In the suspension as called for in claim 1 having the improvement called for therein, said asymmetric leaf spring being a tapered convolute single-leaf leaf spring having an eye at said end pivotally attached to said bracket and being an end of said cantilever limb having the greater stiffness and which extends in a generally continuous direction from said eye to said axle without corrugations formed therein, the other of said cantilever limbs extends in a generally continuous direction from said axle to said spring end support with no corrugations formed therein and including a reverse arch portion therein, said cantilever limb having the greater stiffness having a relatively high spring rate and being substantially thicker than the other cantilever limb which has a relatively low spring rate.
8. In a suspension system for supporting a fore-and-aft extending frame member on one side of a vehicle chassis on the adjacent end of an axle of the vehicle, which system is duplicated on the opposite side of the vehicle, comprising: a frame bracket mounted on said frame member for supporting one end of a spring; a spring end support mounted on said frame member in spaced relationship from said frame bracket; an asymmetric leaf spring having one end pivotally attached to said frame bracket and its opposite end connected to said spring end support; and means for attaching said leaf spring at a place intermediate its opposite ends to said axle end whereby said asymmetric leaf spring is divided into a first cantilever limb on one side of the center line of said axle and a second cantilever limb on the opposite side of said axle center line; the improvement comprising, said asymmetric spring comprises at least one leaf that extends the full length of said spring and at least one shorter leaf that forms one leaf of one of said cantilever limbs, and said cantilever limb which includes said shorter leaf having a stiffness at least four times greater than the stiffness of the other limb.
9. In a suspension as called for in claim 1 having a Ross point located a substantial distance from said spring and supported on said frame bracket in the direction opposite from said asymmetric leaf spring, and having a Ross Line which is relatively long and flat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006233178A AU2006233178B2 (en) | 2000-05-17 | 2006-10-25 | Truck suspensions incorporating asymmetric leaf springs |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57273600A | 2000-05-17 | 2000-05-17 | |
US09/572,736 | 2000-05-17 | ||
PCT/US2001/015238 WO2001087648A1 (en) | 2000-05-17 | 2001-05-11 | Truck suspensions incorporating asymmetric leaf springs |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2006233178A Division AU2006233178B2 (en) | 2000-05-17 | 2006-10-25 | Truck suspensions incorporating asymmetric leaf springs |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2001261435A1 true AU2001261435A1 (en) | 2002-02-14 |
AU2001261435B2 AU2001261435B2 (en) | 2006-08-10 |
Family
ID=24289135
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001261435A Ceased AU2001261435B2 (en) | 2000-05-17 | 2001-05-11 | Truck suspensions incorporating asymmetric leaf springs |
AU6143501A Pending AU6143501A (en) | 2000-05-17 | 2001-05-11 | Truck suspensions incorporating asymmetric leaf springs |
AU2006233178A Ceased AU2006233178B2 (en) | 2000-05-17 | 2006-10-25 | Truck suspensions incorporating asymmetric leaf springs |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU6143501A Pending AU6143501A (en) | 2000-05-17 | 2001-05-11 | Truck suspensions incorporating asymmetric leaf springs |
AU2006233178A Ceased AU2006233178B2 (en) | 2000-05-17 | 2006-10-25 | Truck suspensions incorporating asymmetric leaf springs |
Country Status (11)
Country | Link |
---|---|
US (1) | US8434747B2 (en) |
EP (1) | EP1289784B1 (en) |
JP (1) | JP2003533394A (en) |
KR (2) | KR20080015952A (en) |
AT (1) | ATE542688T1 (en) |
AU (3) | AU2001261435B2 (en) |
BR (1) | BR0110870B1 (en) |
CA (1) | CA2408637C (en) |
MX (1) | MXPA02011279A (en) |
NZ (3) | NZ523060A (en) |
WO (1) | WO2001087648A1 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006264508A (en) * | 2005-03-24 | 2006-10-05 | Hino Motors Ltd | Suspension structure |
US20060244236A1 (en) | 2005-04-27 | 2006-11-02 | Cortez Jerome L | Vehicle suspensions having leaf springs and alternative clamp groups |
US7712754B2 (en) * | 2005-12-28 | 2010-05-11 | Paccar Inc | Vehicle front end suspension |
EP2032381A4 (en) * | 2006-06-16 | 2010-10-06 | Rassini Sa De Cv | Dual leaf suspension for vehicle drive arrangement |
MX2009008395A (en) | 2007-02-07 | 2010-03-15 | Rassini Sa De Cv | Primary air spring and secondary leaf suspension for vehicle. |
US7744105B2 (en) | 2008-04-15 | 2010-06-29 | Hendrickson Usa, L.L.C. | Isolated spring clamp group |
TWI525025B (en) | 2009-04-10 | 2016-03-11 | 辛波提克有限責任公司 | Storage and retrieval system |
US9321591B2 (en) | 2009-04-10 | 2016-04-26 | Symbotic, LLC | Autonomous transports for storage and retrieval systems |
DE102010015951A1 (en) * | 2010-03-12 | 2011-09-15 | Muhr Und Bender Kg | Leaf spring for motor vehicles |
JP5620755B2 (en) * | 2010-08-31 | 2014-11-05 | 日野自動車株式会社 | Suspension device |
US9561905B2 (en) | 2010-12-15 | 2017-02-07 | Symbotic, LLC | Autonomous transport vehicle |
US8965619B2 (en) | 2010-12-15 | 2015-02-24 | Symbotic, LLC | Bot having high speed stability |
TWI654130B (en) * | 2010-12-15 | 2019-03-21 | 辛波提克有限責任公司 | Autonomous transport robot, suspension locking system for autonomous transport vehicles and suspension system for autonomous transport vehicles |
US9499338B2 (en) | 2010-12-15 | 2016-11-22 | Symbotic, LLC | Automated bot transfer arm drive system |
US8696010B2 (en) | 2010-12-15 | 2014-04-15 | Symbotic, LLC | Suspension system for autonomous transports |
US9187244B2 (en) | 2010-12-15 | 2015-11-17 | Symbotic, LLC | BOT payload alignment and sensing |
US11078017B2 (en) | 2010-12-15 | 2021-08-03 | Symbotic Llc | Automated bot with transfer arm |
KR102314503B1 (en) | 2013-09-13 | 2021-10-19 | 심보틱 엘엘씨 | Automated storage and retrieval system |
CN105564175B (en) * | 2014-10-17 | 2018-03-09 | 陕西重型汽车有限公司 | Heavy-duty car rear-suspension system and the heavy-duty car |
MX2018005880A (en) | 2015-11-10 | 2018-11-09 | Rassini Suspensiones S A De C V | Leaf spring suspension system for a vehicle. |
KR102452677B1 (en) | 2016-08-08 | 2022-10-11 | 현대자동차주식회사 | Apparatus for composite leaf spring suspension |
CN107013616B (en) * | 2017-01-03 | 2018-11-30 | 山东理工大学 | High-intensitive first-order gradient rigidity leaf spring clamps the emulated computation method of stiffness characteristics |
DE102017218530B4 (en) | 2017-10-17 | 2021-05-27 | Ford Global Technologies, Llc | Longitudinal leaf spring device for the suspension of a motor vehicle body |
DE102018219907A1 (en) * | 2018-11-21 | 2020-01-09 | Zf Friedrichshafen Ag | Leaf spring suspension |
KR102602979B1 (en) * | 2019-03-08 | 2023-11-15 | 현대자동차주식회사 | Suspension system for vehicle with composite spring |
US11345207B2 (en) | 2019-04-16 | 2022-05-31 | Bendix Commercial Vehicle Systems Llc | Electrically controlled suspension |
CN110978928B (en) * | 2019-12-30 | 2023-05-16 | 山东雷帕得汽车技术股份有限公司 | Less asymmetric plate spring for truck |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US226536A (en) * | 1880-04-13 | Vehicle-spring | ||
US1859105A (en) * | 1929-05-07 | 1932-05-17 | Munro Thomas | Spring suspension of vehicles |
US3674249A (en) * | 1970-07-13 | 1972-07-04 | H & H Equipment Co | Pneumatic suspension axle return device |
US3802718A (en) * | 1971-12-30 | 1974-04-09 | F Schaeff | Spring suspension for motor vehicle axles |
GB1364671A (en) * | 1972-06-05 | 1974-08-29 | British Steel Corp | Vehicle suspension systems |
US3850445A (en) * | 1974-02-11 | 1974-11-26 | Lear Siegler Inc | Combined air spring and leaf spring suspension |
US4033608A (en) * | 1975-12-10 | 1977-07-05 | American Carrier Equipment | Air spring unit |
FR2529838B1 (en) * | 1982-07-12 | 1987-02-27 | Renault Vehicules Ind | PNEUMATIC SUSPENSION DEVICE FOR INDUSTRIAL VEHICLE |
DE3729792A1 (en) | 1987-09-05 | 1989-03-16 | Sauer Achsenfab | SUSPENSION FOR VEHICLE WHEEL AXLE |
NL8703122A (en) * | 1987-12-23 | 1989-07-17 | Weweler Nv | Vehicle air suspension - has axle mechanism including leaf spring with varying thickness |
US5046752A (en) * | 1988-03-31 | 1991-09-10 | Paccar Inc. | Axle suspension system |
DE3825105A1 (en) * | 1988-07-23 | 1990-02-08 | Iveco Magirus | SPRING AXLE SUSPENSION FOR MOTOR VEHICLES, IN PARTICULAR COMMERCIAL VEHICLES |
US4919399A (en) * | 1989-04-10 | 1990-04-24 | Navistar International Transportation Corp. | Suspension brake torque reaction leaf |
US5470096A (en) * | 1994-03-25 | 1995-11-28 | The Binkley Company | Wheeled vehicle suspension |
US5938221A (en) * | 1997-12-08 | 1999-08-17 | The Boler Company | Tapered convolute leaf spring for truck suspensions |
-
2001
- 2001-05-11 KR KR1020087002276A patent/KR20080015952A/en not_active Application Discontinuation
- 2001-05-11 KR KR1020027015345A patent/KR100857044B1/en not_active IP Right Cessation
- 2001-05-11 AU AU2001261435A patent/AU2001261435B2/en not_active Ceased
- 2001-05-11 EP EP01935332A patent/EP1289784B1/en not_active Expired - Lifetime
- 2001-05-11 NZ NZ523060A patent/NZ523060A/en unknown
- 2001-05-11 NZ NZ535767A patent/NZ535767A/en unknown
- 2001-05-11 NZ NZ562428A patent/NZ562428A/en not_active Application Discontinuation
- 2001-05-11 AT AT01935332T patent/ATE542688T1/en active
- 2001-05-11 MX MXPA02011279A patent/MXPA02011279A/en not_active Application Discontinuation
- 2001-05-11 CA CA2408637A patent/CA2408637C/en not_active Expired - Fee Related
- 2001-05-11 BR BRPI0110870-0A patent/BR0110870B1/en not_active IP Right Cessation
- 2001-05-11 WO PCT/US2001/015238 patent/WO2001087648A1/en active IP Right Grant
- 2001-05-11 AU AU6143501A patent/AU6143501A/en active Pending
- 2001-05-11 JP JP2001584074A patent/JP2003533394A/en active Pending
-
2006
- 2006-08-14 US US11/464,390 patent/US8434747B2/en not_active Expired - Lifetime
- 2006-10-25 AU AU2006233178A patent/AU2006233178B2/en not_active Ceased
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