CA2404713A1 - Suspension assembly for a multi-axle trailer - Google Patents
Suspension assembly for a multi-axle trailer Download PDFInfo
- Publication number
- CA2404713A1 CA2404713A1 CA 2404713 CA2404713A CA2404713A1 CA 2404713 A1 CA2404713 A1 CA 2404713A1 CA 2404713 CA2404713 CA 2404713 CA 2404713 A CA2404713 A CA 2404713A CA 2404713 A1 CA2404713 A1 CA 2404713A1
- Authority
- CA
- Canada
- Prior art keywords
- support arm
- axle support
- axle
- mounting
- suspension assembly
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
- B60G9/003—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle being rigidly connected to a trailing guiding device
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A suspension assembly for a multi-axle trailer includes a front mounting, a rear mounting and a rigid axle support arm that extends between the front mounting and the rear mounting. The first end of the axle support arm is mounted for pivotal movement about a substantially horizontal axis by the front mounting. A roller is rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm. The rear mounting includes a roller travel channel. Spaced sidewalls of the roller travel channel are adapted to engage the roller. The rear support wall is adapted to engage the second end of the axle support arm to permit axial loads to be transmitted along the longitudinal axis of the axle support arm to the rear mounting.
Description
TITLE OF THE INVENTION:
Suspension Assembly For A Multi-Axle Trailer FIELD OF THE INVENTION
The present invention relates to a suspension assembly for a multi-axle trailer BACKGROUND OF THE INVENTION
United States Patent 4,397,478 (Jensen et al 1983) discloses a suspension assembly having a pair of spaced front brackets and a pair of spaced rear brackets. A leaf spring is provided having a first end and a second end.
The first end of the leaf spring is secured by a shackle bolt between the front brackets, so that there is free pivotal movement of the leaf spring about the front brackets. The rear brackets are provided with slots. A
roller is rotatably mounted to the second end of the leaf spring. The roller extends between the slots of the rear brackets, so that the roller can freely slide up and down the slots. An air bag is positioned between the leaf spring and a vehicle frame. The free sliding arrangement at the second end of the leaf spring is described as providing lateral location to the second end of the leaf spring without transmitting any vertical load. The object of the Jensen et al reference is described as being to provide an air suspension system using a simple leaf spring to locate the axle and provide roll brake resistance.
A suspension such as is disclosed in the Jensen et al reference is not sufficiently robust for use on a multi-axle trailer due to a limited ability to withstand axial loads extending along the trailer's longitudinal axis.
Suspension Assembly For A Multi-Axle Trailer FIELD OF THE INVENTION
The present invention relates to a suspension assembly for a multi-axle trailer BACKGROUND OF THE INVENTION
United States Patent 4,397,478 (Jensen et al 1983) discloses a suspension assembly having a pair of spaced front brackets and a pair of spaced rear brackets. A leaf spring is provided having a first end and a second end.
The first end of the leaf spring is secured by a shackle bolt between the front brackets, so that there is free pivotal movement of the leaf spring about the front brackets. The rear brackets are provided with slots. A
roller is rotatably mounted to the second end of the leaf spring. The roller extends between the slots of the rear brackets, so that the roller can freely slide up and down the slots. An air bag is positioned between the leaf spring and a vehicle frame. The free sliding arrangement at the second end of the leaf spring is described as providing lateral location to the second end of the leaf spring without transmitting any vertical load. The object of the Jensen et al reference is described as being to provide an air suspension system using a simple leaf spring to locate the axle and provide roll brake resistance.
A suspension such as is disclosed in the Jensen et al reference is not sufficiently robust for use on a multi-axle trailer due to a limited ability to withstand axial loads extending along the trailer's longitudinal axis.
SU1~1ARY OF THE INVENTION
What is required is a suspension assembly for a multi-axle trailer which can withstand greater axial loads.
According to the present invention there is provided a suspension assembly for a multi-axle trailer which includes a front mounting, a rear mounting and a rigid axle support arm that extends between the front mounting and the rear mounting. The front mounting includes a pair of spaced front brackets. The rigid axle support arm has a longitudinal axis, a first end and a second end. The first end is pivotally mounted for pivotal movement about a substantially horizontal axis between the pair of spaced front brackets of the front mounting. A roller is rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm. The rear mounting includes a roller travel channel having spaced sidewalls and a rear support wall extending between the spaced sidewalk . The spaced sidewalls of the roller travel channel are adapted to engage the roller at the second end of the axle support arm. The rear support wall is adapted to engage the second end of the axle support arm such that axial loads are transmitted along the longitudinal axis of the axle support arm to the rear mounting. Means are provided for dampening pivotal movement of the axle support arm.
The suspension assembly, as described above, is better able to withstand axial loading. Axial loads are transmitted from the front mounting along the axle support arm to the rear mounting. As will hereinafter be further described, an axle can be secured to either above or below the axle support arm.
What is required is a suspension assembly for a multi-axle trailer which can withstand greater axial loads.
According to the present invention there is provided a suspension assembly for a multi-axle trailer which includes a front mounting, a rear mounting and a rigid axle support arm that extends between the front mounting and the rear mounting. The front mounting includes a pair of spaced front brackets. The rigid axle support arm has a longitudinal axis, a first end and a second end. The first end is pivotally mounted for pivotal movement about a substantially horizontal axis between the pair of spaced front brackets of the front mounting. A roller is rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm. The rear mounting includes a roller travel channel having spaced sidewalls and a rear support wall extending between the spaced sidewalk . The spaced sidewalls of the roller travel channel are adapted to engage the roller at the second end of the axle support arm. The rear support wall is adapted to engage the second end of the axle support arm such that axial loads are transmitted along the longitudinal axis of the axle support arm to the rear mounting. Means are provided for dampening pivotal movement of the axle support arm.
The suspension assembly, as described above, is better able to withstand axial loading. Axial loads are transmitted from the front mounting along the axle support arm to the rear mounting. As will hereinafter be further described, an axle can be secured to either above or below the axle support arm.
There are various means that can be used for dampening pivotal movement of the axle support arm. Beneficial results have been obtain through the use of one or two air bags positioned above and spaced from the second end of the axle support arm.
Although beneficial results may be obtained through the use of the suspension assembly, as described above, even more beneficial results may be obtained when the front mounting and the rear mounting are secured to a mounting plate. This enables the suspension assembly to be fabricated as a modular unit.
The suspension assembly, as described above, is particularly suited for use on a multi-axle trailer.
Several of the modular units are mounted on the multi-axle trailer with a rear mounting of one modular unit positioned against the front mounting of an other modular unit. When axial loading occurs, such axial loading is transmitted from the one modular unit to the other modular unit. This ability to transmit axial loads, reduces the likelihood that one of the modular units will become excessively loaded, resulting in failure.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a perspective view of a suspension assembly constructed in accordance with the teachings of the present invention, with an axle mounted above the axle support arm.
FIGURE 2 is an exploded perspective view of the suspension assembly illustrated in FIGURE 1~
FIGURE 3 is a side elevation view, in section, of the suspension assembly illustrated in FIGURE 1.
FIGURE 4 is a perspective view of two modular units of the suspension assembly illustrated in FIGURE 1. in end to end relation with wheels mounted on their axles.
FIGURE 5 is a perspective view of two modular units of the suspension assembly illustrated in FIGURE 1. in end to end relation without wheels.
FIGURE 6 is a side elevation view of two modular units of the suspension assembly illustrated in FIGURE 1. in end to end relation without wheels.
FIGURE 7 is a perspective view of a suspension assembly constructed in accordance with the teachings of the present invention, with an axle mounted below the axle support arm.
FIGURE 8 is an exploded perspective view of the suspension assembly illustrated in FIGURE 7~
DETAILED DESCRIPTION OF THE PREFERRED EI~ODIMENT
The preferred embodiment, a suspension assembly for a multi-axle trailer generally identified by reference numeral 10, will now be described with reference to FIGURES
through 8.
Structure and Relationship of Parts:
Referring to FIGURE 1. there is provided a suspension assembly 10 for a multi-axle trailer, which includes a mounting plate 12. A front mounting 14 is secured to mounting plate 12. Front mounting 14 includes a pair of spaced front brackets 16. Referring to FIGURE 2~ a rigid axle support arm 18 is provided that has a longitudinal axis 20, a first end 22 and a second end 24. Referring to FIGURE 1. first end 22 is pivotally mounted for pivotal 5 movement about a substantially horizontal axis 26 between pair of spaced front brackets 16 of front mounting 14.
Referring to FIGURE 2~ a sleeve 28 is provided that is adapted to extend through an aperture 30 at first end 22 of support arm 18 and though apertures 32 that are provided in pair of spaced front brackets 16 to pivotally secure support arm 18 to front brackets 16 of front mounting 14.
Referring to FIGURE 1, a locking bolt 34 extends through one of opposed ends 36 of sleeve 28 and through an outwardly projecting lip 38 adjacent to aperture 32 on one of pair of spaced front brackets 16.
Referring to FIGS g, a roller 40 is rotatably mounted at second end 24 of axle support arm 18 for rotational movement about longitudinal axis 20 of axle support arm 18. Roller 40 has contoured surface 41.
Referring to FIGURE 3~ a rear mounting 42 is secured to mounting plate 12. Referring to FIGURE 2. rear mounting 42 includes a roller travel channel 44 with spaced sidewalls 46 and a rear support wall 48 extending between spaced sidewalls 46. A bottom plate 50 is also provided between spaced sidewalls 46. Referring to FIGURE 3~ spaced sidewalk 46 of roller travel channel 44 are adapted to engage roller 40 at second end 24 of axle support arm 18 and rear support wall 48 is adapted to engage second end 24 of axle support arm 18 such that axial loads are transmitted along longitudinal axis 20 of axle support arm 18 to rear mounting 42.
Although beneficial results may be obtained through the use of the suspension assembly, as described above, even more beneficial results may be obtained when the front mounting and the rear mounting are secured to a mounting plate. This enables the suspension assembly to be fabricated as a modular unit.
The suspension assembly, as described above, is particularly suited for use on a multi-axle trailer.
Several of the modular units are mounted on the multi-axle trailer with a rear mounting of one modular unit positioned against the front mounting of an other modular unit. When axial loading occurs, such axial loading is transmitted from the one modular unit to the other modular unit. This ability to transmit axial loads, reduces the likelihood that one of the modular units will become excessively loaded, resulting in failure.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a perspective view of a suspension assembly constructed in accordance with the teachings of the present invention, with an axle mounted above the axle support arm.
FIGURE 2 is an exploded perspective view of the suspension assembly illustrated in FIGURE 1~
FIGURE 3 is a side elevation view, in section, of the suspension assembly illustrated in FIGURE 1.
FIGURE 4 is a perspective view of two modular units of the suspension assembly illustrated in FIGURE 1. in end to end relation with wheels mounted on their axles.
FIGURE 5 is a perspective view of two modular units of the suspension assembly illustrated in FIGURE 1. in end to end relation without wheels.
FIGURE 6 is a side elevation view of two modular units of the suspension assembly illustrated in FIGURE 1. in end to end relation without wheels.
FIGURE 7 is a perspective view of a suspension assembly constructed in accordance with the teachings of the present invention, with an axle mounted below the axle support arm.
FIGURE 8 is an exploded perspective view of the suspension assembly illustrated in FIGURE 7~
DETAILED DESCRIPTION OF THE PREFERRED EI~ODIMENT
The preferred embodiment, a suspension assembly for a multi-axle trailer generally identified by reference numeral 10, will now be described with reference to FIGURES
through 8.
Structure and Relationship of Parts:
Referring to FIGURE 1. there is provided a suspension assembly 10 for a multi-axle trailer, which includes a mounting plate 12. A front mounting 14 is secured to mounting plate 12. Front mounting 14 includes a pair of spaced front brackets 16. Referring to FIGURE 2~ a rigid axle support arm 18 is provided that has a longitudinal axis 20, a first end 22 and a second end 24. Referring to FIGURE 1. first end 22 is pivotally mounted for pivotal 5 movement about a substantially horizontal axis 26 between pair of spaced front brackets 16 of front mounting 14.
Referring to FIGURE 2~ a sleeve 28 is provided that is adapted to extend through an aperture 30 at first end 22 of support arm 18 and though apertures 32 that are provided in pair of spaced front brackets 16 to pivotally secure support arm 18 to front brackets 16 of front mounting 14.
Referring to FIGURE 1, a locking bolt 34 extends through one of opposed ends 36 of sleeve 28 and through an outwardly projecting lip 38 adjacent to aperture 32 on one of pair of spaced front brackets 16.
Referring to FIGS g, a roller 40 is rotatably mounted at second end 24 of axle support arm 18 for rotational movement about longitudinal axis 20 of axle support arm 18. Roller 40 has contoured surface 41.
Referring to FIGURE 3~ a rear mounting 42 is secured to mounting plate 12. Referring to FIGURE 2. rear mounting 42 includes a roller travel channel 44 with spaced sidewalls 46 and a rear support wall 48 extending between spaced sidewalls 46. A bottom plate 50 is also provided between spaced sidewalls 46. Referring to FIGURE 3~ spaced sidewalk 46 of roller travel channel 44 are adapted to engage roller 40 at second end 24 of axle support arm 18 and rear support wall 48 is adapted to engage second end 24 of axle support arm 18 such that axial loads are transmitted along longitudinal axis 20 of axle support arm 18 to rear mounting 42.
Referring to FIGURE 2. two air bags 52 are positioned between mounting plate 12 and axle support arm 18, thereby dampening pivotal movement of axle support arm 18. It is preferred that two air bags 52 be used in view of available air pressure, physical space constraints which limit the size of individual bags 52 which may be used, desired load capacities, and current limitations on air bag technology.
As air bag technology advances, it will become feasible to use a single air bag 52. A base plate 54 is provided for supporting air bags 52 above and spaced from second end 24 of axle support arm 18. While the illustrated embodiment shows two air bags 52 it will be appreciated that there could be just one air bag 52 or there could also be more than two air bags 52 positioned between mounting plate 12 and axle support arm 18.
Referring to FIGURE 3. an axle 56 is positioned above and secured to axle support arm 18. Referring to FIGS 1.
axle 56 is secured by U bolts 58 to a clamp 60. Clamp 60 is secured around provided on support arm 18 by securing bolts 62. A braking assembly 64 is also positioned above and secured to axle support arm 18 adjacent first end 22 of axle support arm 18. Referring to FIGURE 4. tires 66 are positioned on opposed ends 68 of axle 56.
Referring to FIG~g ~ and g, an alternative embodiment, generally referenced by numeral 100, is illustrated which includes the same suspension assembly however in this embodiment 100, axle 56 is positioned and secured below axle support arm 18. Braking assembly 64 is also positioned below and secured to axle support arm 18 adjacent first end 22 of axle support arm 18. The reason this alternative embodiment is illustrated is that some brake manufacturers are now specifying that upon installation the brakes must rotate in the same direction as wheel motion. The braking assembly can be positioned either above or below axle support arm 18 to accommodate this requirement. It is also possible to reverse the operation of the suspension assembly, as it can function either in compression or in tension. It is contemplated that in most situations it will operate in tension.
Operation:
The use and operation of suspension assembly for a multi-axle trailer generally identified by reference numeral 10, will now be described with reference to FIGURES
through g.
Referring to FIGURE 3, suspension assembly 10 as described above, axial loads are transmitted from front mounting 14 along axle support arm 18 to rear mounting 42.
Spaced sidewalls 46 of roller travel channel 44 are adapted to engage roller 40 at second end 24 of axle support arm 18 and rear support wall 48 is adapted to engage second end 24 of axle support arm 18 such that axial loads are transmitted along longitudinal axis 20 of axle support arm 18 to rear mounting 42. Contoured surface 41 of roller 40 allows roller 40 to resist binding in travel channel 44 as roller 40 travels up and down travel channel 44. Air bags 52 that are positioned between mounting plate 12 and axle support arm 18 serve to dampen pivotal movement of axle support arm 18. Axle 56 can be secured above axle support arm 18 as illustrate in FIGURES 1 and 2, or below axle support arm 18 as illustrated in FIGS ~ and g.
Referring to FI~g 4 through 6, suspension assembly for a multi-axle trailer as described above, can also be used as modular units which are mounted on a trailer with rear mounting 42 of one modular unit positioned against front mounting 14 of an other modular unit, such that axial loads are transmitted from one modular unit to the other modular unit. Tires 66 are positioned on opposed ends 68 of axle 56.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
As air bag technology advances, it will become feasible to use a single air bag 52. A base plate 54 is provided for supporting air bags 52 above and spaced from second end 24 of axle support arm 18. While the illustrated embodiment shows two air bags 52 it will be appreciated that there could be just one air bag 52 or there could also be more than two air bags 52 positioned between mounting plate 12 and axle support arm 18.
Referring to FIGURE 3. an axle 56 is positioned above and secured to axle support arm 18. Referring to FIGS 1.
axle 56 is secured by U bolts 58 to a clamp 60. Clamp 60 is secured around provided on support arm 18 by securing bolts 62. A braking assembly 64 is also positioned above and secured to axle support arm 18 adjacent first end 22 of axle support arm 18. Referring to FIGURE 4. tires 66 are positioned on opposed ends 68 of axle 56.
Referring to FIG~g ~ and g, an alternative embodiment, generally referenced by numeral 100, is illustrated which includes the same suspension assembly however in this embodiment 100, axle 56 is positioned and secured below axle support arm 18. Braking assembly 64 is also positioned below and secured to axle support arm 18 adjacent first end 22 of axle support arm 18. The reason this alternative embodiment is illustrated is that some brake manufacturers are now specifying that upon installation the brakes must rotate in the same direction as wheel motion. The braking assembly can be positioned either above or below axle support arm 18 to accommodate this requirement. It is also possible to reverse the operation of the suspension assembly, as it can function either in compression or in tension. It is contemplated that in most situations it will operate in tension.
Operation:
The use and operation of suspension assembly for a multi-axle trailer generally identified by reference numeral 10, will now be described with reference to FIGURES
through g.
Referring to FIGURE 3, suspension assembly 10 as described above, axial loads are transmitted from front mounting 14 along axle support arm 18 to rear mounting 42.
Spaced sidewalls 46 of roller travel channel 44 are adapted to engage roller 40 at second end 24 of axle support arm 18 and rear support wall 48 is adapted to engage second end 24 of axle support arm 18 such that axial loads are transmitted along longitudinal axis 20 of axle support arm 18 to rear mounting 42. Contoured surface 41 of roller 40 allows roller 40 to resist binding in travel channel 44 as roller 40 travels up and down travel channel 44. Air bags 52 that are positioned between mounting plate 12 and axle support arm 18 serve to dampen pivotal movement of axle support arm 18. Axle 56 can be secured above axle support arm 18 as illustrate in FIGURES 1 and 2, or below axle support arm 18 as illustrated in FIGS ~ and g.
Referring to FI~g 4 through 6, suspension assembly for a multi-axle trailer as described above, can also be used as modular units which are mounted on a trailer with rear mounting 42 of one modular unit positioned against front mounting 14 of an other modular unit, such that axial loads are transmitted from one modular unit to the other modular unit. Tires 66 are positioned on opposed ends 68 of axle 56.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (11)
1. A suspension assembly for a multi-axle trailer, comprising:
a front mounting including a pair of spaced front brackets;
a rigid axle support arm having a longitudinal axis, a first end and a second end, the first end being pivotally mounted for pivotal movement about a substantially horizontal axis between the pair of spaced front brackets of the front mounting;
a roller rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm;
a rear mounting including a roller travel channel having spaced sidewalls and a rear support wall extending between the spaced sidewalls, the spaced sidewalk of the roller travel channel being adapted to engage the roller at the second end of the axle support arm and the rear support wall being adapted to engage the second end of the axle support arm such that axial loads are transmitted along the longitudinal axis of the axle support arm to the rear mounting; and means for dampening pivotal movement of the axle support arm.
a front mounting including a pair of spaced front brackets;
a rigid axle support arm having a longitudinal axis, a first end and a second end, the first end being pivotally mounted for pivotal movement about a substantially horizontal axis between the pair of spaced front brackets of the front mounting;
a roller rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm;
a rear mounting including a roller travel channel having spaced sidewalls and a rear support wall extending between the spaced sidewalls, the spaced sidewalk of the roller travel channel being adapted to engage the roller at the second end of the axle support arm and the rear support wall being adapted to engage the second end of the axle support arm such that axial loads are transmitted along the longitudinal axis of the axle support arm to the rear mounting; and means for dampening pivotal movement of the axle support arm.
2, The suspension assembly as defined in Claim 1, wherein an axle is positioned above and secured to the axle support arm.
3. The suspension assembly as defined in Claim 1, wherein an axle is positioned below and secured to the axle support arm.
4. The suspension assembly as defined in Claim 4, wherein the means for dampening pivotal movement of the axle support arm is at least one air bag positioned above and spaced from the second end of the axle support arm.
5. The suspension assembly as defined in Claim 1, wherein the front mounting and the rear mounting are secured to a mounting plate, thereby forming a modular unit.
6. The suspension assembly as defined in Claim 5, wherein several of the modular units are mounted on a trailer with a rear mounting of one modular unit positioned against the front mounting of an other modular unit, such that axial loading is transmitted from the one modular unit to the other modular unit.
7. The suspension assembly as defined in Claim 1, wherein the roller has arcuate contoured ends, thereby preventing binding within the roller travel channel.
8. A suspension assembly for a multi-axle trailer, comprising:
a mounting plate;
a front mounting secured to the mounting plate, the front mounting including a pair of spaced front brackets;
a rigid axle support arm having a longitudinal axis, a first end and a second end, the first end being pivotally mounted for pivotal movement about a substantially horizontal axis between the pair of spaced front brackets of the front mounting;
a roller with arcuate contoured ends rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm; a rear mounting secured to the mounting plate, the rear mounting including a roller travel channel having spaced sidewalls and a rear support wall extending between the spaced sidewalls, the spaced sidewalls of the roller travel channel being adapted to engage the roller at the second end of the axle support arm and the rear support wall being adapted to engage the second end of the axle support arm such that axial loads are transmitted along the longitudinal axis of the axle support arm to the rear mounting; and at least one air bag positioned between the mounting plate and the axle support arm, thereby dampening pivotal movement of the axle support arm.
a mounting plate;
a front mounting secured to the mounting plate, the front mounting including a pair of spaced front brackets;
a rigid axle support arm having a longitudinal axis, a first end and a second end, the first end being pivotally mounted for pivotal movement about a substantially horizontal axis between the pair of spaced front brackets of the front mounting;
a roller with arcuate contoured ends rotatably mounted at the second end of the axle support arm for rotational movement about the longitudinal axis of the axle support arm; a rear mounting secured to the mounting plate, the rear mounting including a roller travel channel having spaced sidewalls and a rear support wall extending between the spaced sidewalls, the spaced sidewalls of the roller travel channel being adapted to engage the roller at the second end of the axle support arm and the rear support wall being adapted to engage the second end of the axle support arm such that axial loads are transmitted along the longitudinal axis of the axle support arm to the rear mounting; and at least one air bag positioned between the mounting plate and the axle support arm, thereby dampening pivotal movement of the axle support arm.
9. The suspension assembly as defined in Claim 8, wherein an axle is positioned above and secured to the axle support arm.
10. The suspension assembly as defined in Claim 8, wherein an axle is positioned below and secured to the axle support arm.
11. The suspension assembly as defined in Claim 8, wherein several of the modular units are mounted on a trailer with a rear mounting of one modular unit positioned against the front mounting of an other modular unit, such that axial loads are transmitted from the one modular unit to the other modular unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2404713 CA2404713A1 (en) | 2002-09-27 | 2002-09-27 | Suspension assembly for a multi-axle trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2404713 CA2404713A1 (en) | 2002-09-27 | 2002-09-27 | Suspension assembly for a multi-axle trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2404713A1 true CA2404713A1 (en) | 2004-03-27 |
Family
ID=32181854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2404713 Abandoned CA2404713A1 (en) | 2002-09-27 | 2002-09-27 | Suspension assembly for a multi-axle trailer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2404713A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113874233A (en) * | 2019-05-30 | 2021-12-31 | Ｋｙｂ株式会社 | Suspension device |
-
2002
- 2002-09-27 CA CA 2404713 patent/CA2404713A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113874233A (en) * | 2019-05-30 | 2021-12-31 | Ｋｙｂ株式会社 | Suspension device |
| CN113874233B (en) * | 2019-05-30 | 2023-05-30 | Ｋｙｂ株式会社 | Suspension device |
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| FZDE | Dead |