JPH05169945A - Suspension device - Google Patents
Suspension deviceInfo
- Publication number
- JPH05169945A JPH05169945A JP35525191A JP35525191A JPH05169945A JP H05169945 A JPH05169945 A JP H05169945A JP 35525191 A JP35525191 A JP 35525191A JP 35525191 A JP35525191 A JP 35525191A JP H05169945 A JPH05169945 A JP H05169945A
- Authority
- JP
- Japan
- Prior art keywords
- equalizer link
- tractor
- axle
- rear end
- load
- 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.)
- Withdrawn
Links
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セミトレーラ用トラク
タのサスペンション装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device for a tractor for a semitrailer.
【０００２】[0002]
【従来の技術】セミトレーラ用トラクタにおいては、カ
プラ荷重がトラクタの前後車軸に配分されるが、後車軸
許容荷重を車両保安基準上の１０トンの規制内に収めて
カプラ荷重を大きくするには、従来はカプラ中心と後車
軸との前後方向のオフセットを大きくする必要がある
が、このオフセットを大きくすれば、後輪における上下
荷重の影響等によりキャブ乗員の乗り心地が悪化すると
共に、キャブ後面とカプラとの距離が短くなるため連結
するセミトレーラ前面の前回り半径が小さくなり、か
つ、カプラと車体後端との距離が長くなるため連結する
セミトレーラのランディングギヤ等前部下方の突起物の
後回り半径が大きくなって、連結できるセミトレーラの
範囲に制限を受ける不具合があった。2. Description of the Related Art In a semi-trailer tractor, the coupler load is distributed to the front and rear axles of the tractor. In order to increase the coupler load by keeping the rear axle allowable load within the regulation of 10 tons in the vehicle safety standard, Conventionally, it is necessary to increase the front-rear offset between the center of the coupler and the rear axle, but if this offset is increased, the ride comfort of the cab occupant will deteriorate due to the effects of vertical load on the rear wheels, and Since the distance to the coupler is short, the front turn radius of the front of the semi-trailer to be connected is small, and the distance between the coupler and the rear end of the vehicle body is long. There was a problem that the radius became large and the range of semi-trailers that could be connected was limited.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、前後車軸の
分担荷重を変更できるようにして、前記オフセットを最
適の大きさに選定できるようにすることを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to make it possible to change the shared load of front and rear axles so that the offset can be selected to an optimum size.
【０００４】[0004]
【課題を解決するための手段】このため、本発明にかか
るサスペンション装置は、セミトレーラ用トラクタにお
いて、車幅方向の軸により車体に中間部が枢支されたイ
コライザリンク、同イコライザリンクの前端部に後端が
連結された前車軸用板ばね及び上記イコライザリンクの
後端部に前端が連結された後車軸用板ばねを有してい
る。Therefore, in a suspension device according to the present invention, in a semi-trailer tractor, an equalizer link having an intermediate portion pivotally supported by a vehicle widthwise axis and a front end portion of the equalizer link is provided. A front axle leaf spring having a rear end coupled thereto and a rear axle leaf spring having a front end coupled to a rear end portion of the equalizer link are provided.
【０００５】[0005]
【作用】従って、イコライザリンクの中間枢支点とその
前後端部との距離の比を適切に設定することにより、前
後車軸がそれぞれ分担するカプラ荷重を所望の割合に選
定することができる。Therefore, by appropriately setting the ratio of the distance between the intermediate pivot of the equalizer link and the front and rear ends thereof, the coupler load shared by the front and rear axles can be selected at a desired ratio.
【０００６】[0006]
【実施例】以下、図面に示す本発明の実施例について具
体的に説明する。キャブオーバ形のセミトレーラ用トラ
クタ１は、車体２上にカプラ３が取り付けられ、前輪４
と後輪５の間における車体２上の点６においてイコライ
ザリンク７の中間部が枢支されていて、前車軸用板ばね
８の前端が車体２に、後端がシャックル９を介してイコ
ライザリンク７の前端部１０にそれぞれ連結され、後車
軸用板ばね１１の前端目玉部がイコライザリンク７の後
端部１２に、後端がシャックル１３を介して車体２にそ
れぞれ連結されている。Embodiments of the present invention shown in the drawings will be specifically described below. A cab-over type semi-trailer tractor 1 has a coupler 3 mounted on a vehicle body 2 and a front wheel 4
An intermediate portion of the equalizer link 7 is pivotally supported at a point 6 on the vehicle body 2 between the rear wheel 5 and the rear wheel 5, and the front end of the front axle leaf spring 8 is attached to the vehicle body 2 and the rear end thereof is connected via the shackle 9 to the equalizer link 7. 7, the front end eyeball portion of the rear axle leaf spring 11 is connected to the rear end portion 12 of the equalizer link 7, and the rear end thereof is connected to the vehicle body 2 via the shackle 13.
【０００７】上記トラクタ１に対して、カプラ３により
図示しないセミトレーラが連結されたとき、 ＷF ：前輪４に作用する荷重 ＷR ：後輪５に作用する荷重 Ｐ1 ：前車軸用板ばね８の前端に作用する荷重 Ｐ2 ：イコライザリンク７の前端部１０に作用する荷重 Ｐ3 ：イコライザリンク７の後端部１２に作用する荷重 Ｐ4 ：後車軸用板ばね１１の後端に作用する荷重 Ｌ1 ：イコライザリンク７の前端部１０と枢支点６との
水平距離 Ｌ2 ：イコライザリンク７の枢支点６と後端部１２との
水平距離 ｌ1 ：前車軸用板ばね８の前端と前車軸との水平距離 ｌ2 ：前車軸とイコライザリンク７の前端部１０との水
平距離 ｌ3 ：イコライザリンク７の後端部１２と後車軸との水
平距離 ｌ4 ：後車軸と後車軸用板ばね１１の後端との水平距離 とすると、力のつり合いから、When a semi-trailer (not shown) is connected to the tractor 1 by the coupler 3, WF: load acting on the front wheel 4 WR: load acting on the rear wheel 5 P1: front end of the leaf spring 8 for the front axle Applied load P2: Load applied to the front end portion 10 of the equalizer link P3: Load applied to the rear end portion 12 of the equalizer link P4: Load applied to the rear end of the leaf spring 11 for the rear axle L1: Equalizer link 7 Horizontal distance between the front end portion 10 and the fulcrum point L2: Horizontal distance between the fulcrum point 6 and the rear end portion 12 of the equalizer link 7 1: Horizontal distance between the front end of the front axle leaf spring 8 and the front axle 12: Front Horizontal distance between axle and front end 10 of equalizer link 7: Horizontal distance between rear end 12 of equalizer link 7 and rear axle l4: Horizontal distance between rear axle and rear end of leaf spring 11 for rear axle ,Power From the balance
【０００８】Ｐ1 ＝ＷF ・ｌ2 ／（ｌ1 ＋ｌ2 ） Ｐ2 ＝ＷF ・ｌ1 ／（ｌ1 ＋ｌ2 ） Ｐ3 ＝ＷR ・ｌ4 ／（ｌ3 ＋ｌ4 ） Ｐ4 ＝ＷR ・ｌ3 ／（ｌ3 ＋ｌ4 ） また、回転モーメントのつり合いから、 Ｐ2 ＝Ｐ3 ・Ｌ2 ／Ｌ1 ＷF ＝Ｐ2 ・（ｌ1 ＋ｌ2 ）／ｌ1 ＷR ＝Ｐ3 ・（ｌ3 ＋ｌ4 ）／ｌ4P1 = WF.multidot.l2 / (l1 + l2) P2 = WF.multidot.l1 / (l1 + l2) P3 = WR.multidot.l4 / (l3 + l4) P4 = WR.multidot.l3 / (l3 + l4) Also, from the balance of the rotational moments. , P2 = P3.L2 / L1 WF = P2. (L1 + l2) / l1 WR = P3. (L3 + l4) / l4
【０００９】従って、 ＷF ／ＷR ＝Ｐ2 ・（ｌ1 ＋ｌ2 ）・ｌ4 ／Ｐ3 ・（ｌ3 ＋ｌ4 ）・ｌ1 便宜上、 ｌ1 ＝ｌ2 ＝ｌ3 ＝ｌ4 とすると、 ＷF ／ＷR ＝Ｐ2 ／Ｐ3 ＝Ｌ2 ／Ｌ1Therefore, WF / WR = P2. (L1 + l2) .l4 / P3. (L3 + l4) .l1 For convenience, if l1 = l2 = l3 = l4, then WF / WR = P2 / P3 = L2 / L1
【００１０】すなわち、前輪４に作用する荷重ＷF と後
輪５に作用する荷重ＷR との比は、イコライザリンク７
の枢支点６と後端部１２との水平距離Ｌ2 とイコライザ
リンク７の前端部１０と枢支点６との水平距離Ｌ1 との
比に等しく、あるいはそれに近い値となって、カプラ３
の位置に関係なく自由に選定することができるので、カ
プラ３の中心と後車軸との前後方向のオフセット量は、
後車軸への荷重を考慮することなく設定することができ
る。That is, the ratio of the load WF acting on the front wheels 4 and the load WR acting on the rear wheels 5 is equal to the equalizer link 7
Is equal to or close to the ratio of the horizontal distance L2 between the pivotal fulcrum 6 and the rear end 12 of the equalizer link 7 and the horizontal distance L1 between the front end 10 of the equalizer link 7 and the fulcrum 6.
Since it can be freely selected regardless of the position of, the amount of offset in the front-rear direction between the center of the coupler 3 and the rear axle is
It can be set without considering the load on the rear axle.
【００１１】従って、カプラ３の中心と後車軸との前後
方向のオフセット量を小さくすることによって、トラク
タ１の乗り心地を容易に向上させうると共に、キャブ後
面とカプラ３との距離が大きくなってトラクタ１に連結
するセミトレーラ前面の前回り半径が大きくてもよくな
り、かつ、カプラ３と車体２後端との距離が短くなって
トラクタ１に連結するセミトレーラのランディングギヤ
等前部下方の突起物の後回り半径が小さくてもよくなる
ため、トラクタ１に連結できるセミトレーラの範囲を拡
げることができて、大層便利となる。Therefore, by reducing the offset amount between the center of the coupler 3 and the rear axle in the front-rear direction, the riding comfort of the tractor 1 can be easily improved, and the distance between the rear surface of the cab and the coupler 3 becomes large. The front turning radius of the front surface of the semi-trailer connected to the tractor 1 may be large, and the distance between the coupler 3 and the rear end of the vehicle body 2 may be shortened, so that a projection such as a landing gear of the semi-trailer connected to the tractor 1 is provided below the front part. Since the rear turning radius may be small, the range of the semi-trailer that can be connected to the tractor 1 can be expanded, which is very convenient.
【００１２】また、イコライザリンク７は前後端部１
０、１２が前後車軸用板ばね８、１１に連結されると共
に、中間部が車体２に枢支された構造となっているの
で、路面から前輪４あるいは後輪５に加えられる動的荷
重がこのリンク構造により緩和され、この面からもトラ
クタ１の乗り心地を向上させることができる利点があ
る。Further, the equalizer link 7 has front and rear end portions 1.
Since 0 and 12 are connected to the front and rear axle leaf springs 8 and 11, and the intermediate portion is pivotally supported by the vehicle body 2, the dynamic load applied from the road surface to the front wheel 4 or the rear wheel 5 is This link structure has an advantage that the ride comfort of the tractor 1 can be improved in this respect as well.
【００１３】[0013]
【発明の効果】本発明にかかるサスペンション装置にお
いては、イコライザリンクの中間枢支点とその前後端部
との距離の比等に応じて前後車軸に荷重が配分され、カ
プラの設置場所を自由に選定できると同時に、前後端部
が前後車軸用板ばねに連結されたイコライザリンクの中
間部が車体に枢支されているので、セミトレーラ用トラ
クタの乗り心地を容易に向上させることができ、かつ、
トラクタに連結できるセミトレーラの範囲を拡げること
ができて、実用上の効果が非常に大きい。In the suspension device according to the present invention, the load is distributed to the front and rear axles according to the ratio of the distance between the intermediate pivot point of the equalizer link and its front and rear ends, and the installation location of the coupler can be freely selected. At the same time, since the middle part of the equalizer link whose front and rear ends are connected to the front and rear axle leaf springs is pivotally supported by the vehicle body, it is possible to easily improve the riding comfort of the semi-trailer tractor, and
The range of semi-trailers that can be connected to the tractor can be expanded, and the practical effect is extremely large.
【図１】本発明の実施例における概略側面図。FIG. 1 is a schematic side view of an embodiment of the present invention.
１ セミトレーラ用トラクタ ２ 車体 ３ カプラ ４ 前輪 ５ 後輪 ６ 枢支点 ７ イコライザリンク ８ 前車軸用板ばね １１ 後車軸用板ばね 1 Semi-trailer tractor 2 Car body 3 Coupler 4 Front wheel 5 Rear wheel 6 Pivot point 7 Equalizer link 8 Front axle leaf spring 11 Rear axle leaf spring
Claims (1)
方向の軸により車体に中間部が枢支されたイコライザリ
ンク、同イコライザリンクの前端部に後端が連結された
前車軸用板ばね及び上記イコライザリンクの後端部に前
端が連結された後車軸用板ばねを有するサスペンション
装置。1. A semi-trailer tractor, an equalizer link having an intermediate portion pivotally supported by a vehicle body by a shaft in a vehicle width direction, a leaf spring for a front axle having a rear end connected to a front end portion of the equalizer link, and the equalizer link. A suspension device having a rear axle leaf spring having a front end connected to a rear end portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35525191A JPH05169945A (en) | 1991-12-20 | 1991-12-20 | Suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35525191A JPH05169945A (en) | 1991-12-20 | 1991-12-20 | Suspension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05169945A true JPH05169945A (en) | 1993-07-09 |
Family
ID=18442852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35525191A Withdrawn JPH05169945A (en) | 1991-12-20 | 1991-12-20 | Suspension device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05169945A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10065470B2 (en) | 2015-11-20 | 2018-09-04 | Hyundai Motor Company | Suspension of front double-axle vehicle |
-
1991
- 1991-12-20 JP JP35525191A patent/JPH05169945A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10065470B2 (en) | 2015-11-20 | 2018-09-04 | Hyundai Motor Company | Suspension of front double-axle vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990311 |