CA1154468A - Device for laterally stabilizing the axles of an air- suspended trailer - Google Patents

Device for laterally stabilizing the axles of an air- suspended trailer

Info

Publication number
CA1154468A
CA1154468A CA000367796A CA367796A CA1154468A CA 1154468 A CA1154468 A CA 1154468A CA 000367796 A CA000367796 A CA 000367796A CA 367796 A CA367796 A CA 367796A CA 1154468 A CA1154468 A CA 1154468A
Authority
CA
Canada
Prior art keywords
axle
torque
rod
frame
securing means
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.)
Expired
Application number
CA000367796A
Other languages
French (fr)
Inventor
Ramon Castro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA000367796A priority Critical patent/CA1154468A/en
Application granted granted Critical
Publication of CA1154468A publication Critical patent/CA1154468A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/003Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle being rigidly connected to a trailing guiding device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE:

The present invention relates to a vehicle suspen-sion including a frame and at least one compressible-fluid suspension system for supporting said frame, said suspension system comprising one or more suspension arms pivotally secured to said frame by pivot securing means, one or more compressible-fluid spring bags operatively interposed between said frame and said suspension arms and a laterally extending axle secured to said one or more suspension arms, the improve-ment comprising an axle securing means secured to said axle and a rigid laterally extending torque-rod pivotally secured at one end thereof to said axle securing means and pivotally secured at the other end thereof to anchor means adapted to secure said other end of said torque-rod to said frame, wherein said torque-rod, said axle securing means and said anchor means are adapted to cooperate so that said torque-rod inhibits relative lateral movement between said frame and said axle and so that said torque-rod follows movement of said axle toward and away from said frame and wherein said torque-rod, said axle securing means and said anchor means are adapted so that said torque-rod has a normal non-operative position wherein it, at least substantially, extends from said axle securing means to said anchor means horizontally and parallel to said axle.

Description

1~44~i8 The presen-t invention relates -to an improved sus-pension system.
It is known to provide trailers and the like with suspension systems making use of compressible-fluid spring bags; for example, use is made of air spring bags which com-press under a load to provide a cushioning effect and return to their normal position on release of the load.
Suspension systems employing compressible-fluid suspensions need frequent maintenance in order to maintain safety. Such systems may comprise, a suspension arm pivotally secured to a frame by pivot securing means, a compressible-fluid spring bag operatively interposed between the frame and ; said suspension arm and a laterally extending (e.g. dead) axle secured to said suspension arm. The suspension arm means may conveniently be secured to said frame by pivot securing means making use of suitable bushings. Compressible fluid suspensions, for example, air spring bags, are not very rigid so that lateral movement to which the axle is subjected may induce considerable stress on the bushings lof the pivot securing means) via the axle connection and the suspension arm means. Thus, the bushing, the axle connection to the - suspension arm means and even the compressible fluid spring (e.g. air spring) have a short lifetime and must be frequently replaced to avold accidents and resulting damage to the trailer.
It would be advantageous to have a suspension system of the type descrlbed above including means for later-ally stabilizing the axle to Inhibit lateral movements of the axle in operation and avoid the usually associated wear and tear to the compressible fluid spring, e.g. air-spring, pivot -points and/or axle connection to the suspension arm means.
In accordance with the present invention there is - ~, ., - 1 -- - \
llS~468 provided in a vehicle suspensl.on including a frame and at least one compressible-fluid suspension system for supporting said frame, said suspension system comprising one or more suspension arms pivotally secured to said frame by pivo-t securing means, one or more compressible-fluid spring bags operatively interposed between said frame and said suspension arms and a laterally extendiny axle secured to said one or more suspension arms, the improvement comprising an axle securing means secured to said axle and a rigid laterally extending torque-rod pivotally secured at one end thereof to said axle securing means and pivotally secured at the other end thereof to anchor means adapted to secure said other end of said torque-rod to said frame, wherein said torque-rod, said axle securing means and said anchor. means are adapted to cooperate so that said torque-rod inhibits relative lateral movement between said frame and said axle and so that said . torque-rod follows movement of said axle toward and away from .~ said frame and wherein sald torque-rod, said axle securing means and said anchor means are adapted so that said torque-rod has a normal non-operative position wherein it, at least ~ susbtantially, extends from said axle securing means to said : anchor means horizontally and parallel to said axle.
In particular the present invention provides in a vehicle suspension, suitable for a trailer, including a frame and at least one compressible-fluid suspension system for supporting said frame, said suspension system comprising two spaced apart suspension arms each pivotally secured to said frame by a respective pivot securing means, two compressible-fluid spring bags each operatively interposed between said ~rame and a respective suspension arm and a laterally extend-ing dead axle fixed to said suspension arms between said pivot securing means and said compressible-fluid spring bags, . - 2 -the improvemen-t comprising, an axle securing means secured to said axle and a rigid laterally extending torque-rod pivotally secured at one end thereof to said axle securing means and pivotally secured at the other end thereof to anchor means adapted to secure said other end of said torque-rod to said frame, wherein said torque-rod, said axle securing means and said anchor means are adapted to cooperate so that said torque-rod inhibits relative lateral movement between said frame and said axle and so that said torque-rod follows move-ment of said axle toward and away from said frame and wherein said torque-rod, said axle securing means and said anchor means are adapted so that said torque-rod has a normal non-- operative position wherein it, at least substantially, extends - from said axle securing means to said anchor means horizon-tally and parallel to said axle.
As indicated above, in accordance with the present invention the torque-rod is pivotally secured to the axle securing means and is pivotally secured to the anchor means.
The torque-rod, the axle securing means and the anchor means are adapted so that the torque-rod has a normal non-operative position wherein it, at least substantially, extends from said - axle securing means to said anchor means horizontally and parallel to the axle. The normal non-operative position is the position which the suspension takes when the suspension is not operating; that is the vehicle incorporating the suspen-sion is not moving and is on a flat horizontal surface.
According to a preferred feature of the present ~; invention the torque-rod is disposed (e.g. directly) above the axle.
-30 According to the present invention the anchor means may be adapted so that said other end of said torque-rod can be secured thereto below a first side of said frame. The .~ ~
~ - 3 -llS4~68 torque-rod may extend from said anchor means such tha-t said one end of said torque-rod is secured to said axle securing means at a position about below the side of said frame opposing said first side.
According to the present invention if the suspension system has two suspension arms the suspension arms may be spaced apart by the axle such that each one of the suspension arms is below a respective opposing side of said frame. The anchor means may be adapted so that said other end of said torque-rod is secured thereto below a first opposing side of said frame. The torque-rod may be secured to said axle securing means such that said one end of said torque-rod is positioned adjacent to the - - 3a -suspension arm below the other opposing side o~ said frame.
According to the present invention the compressible-fluid spring bags may consist of air spring bags e.g. an air-inflated cushioning bag.
According to the present invention the torque-rod may be pivotally secured to said axle securing means and to the anchor means by securing means which includes a pivot pin.
In drawings which illustrate an embodiment of the invention, figure 1 is a schematic view of a suspension system according to the invention;
figure 2 is a side view of the suspension system drawn in figure l;
and figure 3 is a detailed view in cross-section of a pivotal connection for the torque-rod.
Referring now to figure 1, it illustrates a suspension system suitable for use on vehicles such as trailers adapted to be towed by tractors. Although figure 1 illustrates one such system, a plurality thereof may be used; most trailers will employ two such suspension systems. As can be seen in figure -; 1 the suspension has a laterally extending dead axle 10 to which wheels (not shown) may be rotatably mounted. The frame illustrated comprises a vehicle frame having opposing, longitudi-nally extending, side members 12 and 14. The axle 10 traverses the frame, i.e. perpendicularly. The axle 10 is secured to a pair of spaced apart suspension arms 16 and 18. As can be seen each suspension arm 16 and 18 is pivotally mounted by a pivot pin ~e.g. a bushing) 20 and 22 to pivot securing means ;~ in the form of brackets 24 and 26 each having a generally u-shaped opening and being fixed at a respective upper end to a respective longitudinally extending side member.
Compressible-fluid spring bags (e.g. compressible _~_ air spring bags) 28 and 30 are operatively interposed between a respective suspension arm and the frame. The bag can for example be made from suitable flexible material such as rein-forced rubber material.
Each suspension arm 16 and 18 perpendicularly traverses the axle 10. The axle 10 is secured to each sus-pension arm 16 and 18 between a respective bracket 24 or 26 and a respective fluid compressible spring bag 28 or 30 by a pair of u-bolts 32 and 34.
With reference to figures 1 and 2 the lateral movement inhibiting mechanism illustrated has an anchor means which includes a rigid plate 40 fixed not only to the longitudinally extending side member 12 but also to the bracket 24 and to the cross-beam 41. Spaced torque-rod connecting members extend . .
inwardly from the plate 40 between the side member 12 and the axle 10. The anchoring means illustrated has additional reinforcing member 42 connected to bracket 24 and reinforcing member 44 connected to cross-beam 41. The anchoring means many take any suitable form, keeping in mind the intended purpose thereof as indicated above.
The axle securing means consists of a u-shaped bracket 46 positioned or disposed adjacent to the suspension arm 18 which is beneath the side member 14.
The rigid torque-rod 48 extends laterally with respect to the frame and is pivotally secured at end 50 between the spaced connecting members extending from the plate 40 by securing means including pivot pin 52. The end 54 of the torque-rod 48 is pivotally secured to the u-shaped bracket 46 by securing ~; ~ means which also includes a pivot pin 55.
In the embodiment illustrated in figure 1 the torque-rod 48, the u-shaped bracket 46 and the anchor means are adapted to cooperate so that the torque-rod 48, in its normal non-operative position, extends, at least substantially, horizontally . `' ~ .

-1~54~68 and parallel to the axle 10.
Figure 3 illustrates a suitable mechanism for pivotally securing the torque-rod 48 to the anchor means and the axle securing means. The u-shaped brace 66 has side walls having cooperating holes pierced therethrough. The torque-rod 48 likewise includes a passage way which cooperates with the holes in the side walls of the u-shaped brace 66 so that pivot pin means in the form of a bolt 62 may pass therethrough to secure said torque-rod 4~ to said u-shaped brace 66 by means of nut 64. A rubber cylinder or brushing 68 may be interposed between the bolt 62 and the torque-rod in 60.
In accordance with the present invention the torque-rod is preferably as long as possible. The torque-rod can, for example, as illustrated in figure 1 extend from the fixed rigid plate 40 to a point adjacent the suspension beam lB below the second side member 14.
It is especially advantageous for the embodiment illustrated in figure 1 during normal operation of the suspension in relation to a horizontal support surface e.g. road, that the torque-rod extend as near as possible horizontally to reduce as much as possible shocks transmitted to the rigid plate 40 and to allow the torque-rod to transmit to the rigid plate lateraI
forces induced by relative lateral movement of the axle with respect to the frame. The torque-rod can advantageously be typically mounted both to the rigid plate 40 and to the u-shaped ; bracket 46 in such a manner that the torque-rod will follow the natural up-and-down and twisting movements of the axle 10 when the suspension i5 in operation.
In the illustrated embodiment the axle does not include any means of directly transfering power to the wheels (e.g. by differential) and in this sense is a dead axle such as is used with trailers adapted to the towed by tractors. However ~` -6-llS~4~Z!3 the present invention includes within its scope the use of the above defined suspension system with axles delivering power to the wheels.
The torque-rod 48 and the axle 10 can be of any suitable cross-reaction e.g. square, round etc.

Claims (10)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. In a vehicle suspension including a frame and at least one compressible fluid suspension system for support-ing said frame, said suspension system comprising one or more suspension arms pivotally secured to said frame by pivot securing means, one or more compressible-fluid spring bags operatively interposed between said frame and said suspension arms and a laterally extending axle secured to said one or more suspension arms, the improvement comprising an axle securing means secured to said axle and a rigid laterally extending torque-rod pivotally secured at one end thereof to said axle securing means and pivotally secured at the other end thereof to anchor means adapted to secure said other end of said torque-rod to said frame, wherein said torque-rod, said axle securing means and said anchor means are adapted to cooperate so that said torque-rod inhibits relative lateral movement between said frame and said axle and so that said torque-rod follows movement of said axle toward and away from said frame and wherein said torque-rod, said axle securing means and said anchor means are adapted so that said torque-rod has a normal non-operative position wherein it, at least substantially, extends from said axle securing means to said anchor means horizontally and parallel to said axle.
2. The vehicle suspension according to claim 1 wherein said torque-rod is disposed directly above said axle.
3. The vehicle suspension according to claim 2 wherein said anchor means is adapted so that said other end of said torque-rod is secured thereto below a first side of said frame and wherein said one end of said torque-rod is secured to said axle securing means at a position about below the side of said frame opposing said first side.
4. In a vehicle suspension, suitable for a trailer, including a frame and at least one compressible-fluid suspen-sion system for supporting said frame, said suspension system comprising two spaced apart suspension arms each pivotally secured to said frame by a respective pivot securing means, two compressible-fluid spring bags each operatively interposed between said frame and a respective suspension arm and a laterally extending dead axle fixed to said suspension arms between said pivot securing means and said compressible-fluid spring bags, the improvement comprising, an axle securing means secured to said axle and a rigid laterally extending torque-rod pivotally secured at one end thereof to said axle securing means and pivotally secured at the other end thereof to anchor means adapted to secure said other end of said torque-rod to said frame, wherein said torque-rod, said axle securing means and said anchor means are adapted to cooperate so that said torque-rod inhibits relative lateral movement between said frame and said axle and so that said torque-rod follows movement of said axle toward and away from said frame and wherein said torque-rod, said axle securing means and said anchor means are adapted so that said torque-rod has a normal non-operative position wherein it, at least substantially, extends from said axle securing means to said anchor means horizontally and parallel to said axle.
5. The vehicle suspension according to claim 4 wherein said torque-rod is disposed directly above said axle.
6. The vehicle suspension according to claim 5 wherein said suspension arms are spaced apart by said axle such that each of said suspension arms is below a respective opposing side of said frame wherein said anchor means is adapted so that said other end of said torque-rod is secured thereto below a first opposing slde of said frame and wherein said one end of said torque-rod is secured to said axle securing means at a position adjacent to the suspension arm below the other opposing side of said frame.
7. The vehicle suspension according to anyone of claims 1, 2 and 3, wherein said compressible-fluid spring bags are air spring bags.
8. The vehicle suspension according to any one of claims 1, 2 and 3, wherein said axle is a dead axle.
9. The vehicle suspension according to anyone of claims 1, 2 and 3, wherein said compressible-fluid spring bags are air spring bags and said axle is a dead axle.
10. The vehicle suspension according to anyone of claims 4, 5 and 6, wherein said compressible-fluid spring bags are air spring bags.
CA000367796A 1980-12-31 1980-12-31 Device for laterally stabilizing the axles of an air- suspended trailer Expired CA1154468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000367796A CA1154468A (en) 1980-12-31 1980-12-31 Device for laterally stabilizing the axles of an air- suspended trailer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000367796A CA1154468A (en) 1980-12-31 1980-12-31 Device for laterally stabilizing the axles of an air- suspended trailer

Publications (1)

Publication Number Publication Date
CA1154468A true CA1154468A (en) 1983-09-27

Family

ID=4118812

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000367796A Expired CA1154468A (en) 1980-12-31 1980-12-31 Device for laterally stabilizing the axles of an air- suspended trailer

Country Status (1)

Country Link
CA (1) CA1154468A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004197A1 (en) * 1990-08-31 1992-03-19 Sjoelund Anders Wheel suspension device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004197A1 (en) * 1990-08-31 1992-03-19 Sjoelund Anders Wheel suspension device

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