JPH08258501A - Multi-piece rim for construction machine - Google Patents
Multi-piece rim for construction machineInfo
- Publication number
- JPH08258501A JPH08258501A JP6309495A JP6309495A JPH08258501A JP H08258501 A JPH08258501 A JP H08258501A JP 6309495 A JP6309495 A JP 6309495A JP 6309495 A JP6309495 A JP 6309495A JP H08258501 A JPH08258501 A JP H08258501A
- Authority
- JP
- Japan
- Prior art keywords
- rim
- side ring
- back flange
- insertion member
- construction machine
- 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.)
- Pending
Links
Landscapes
- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は建機用車両の車輪のマル
チピース（多片）リムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-piece rim for a wheel of a construction machine vehicle.
【０００２】[0002]
【従来の技術】建機用タイヤは剛性が高いため、建機用
車両の車輪リム１は、図２に示すように、マルチピース
構造にして、タイヤ２の脱着を容易にしている。マルチ
ピース構造では、リム１は、一端にバックフランジ４を
有し他端にガター部５を有するリム本体３と、バックフ
ランジ４に軸方向を支持されたサイドリング６、ガター
部５側に配されたもう一つのサイドリング７と、サイド
リング７を軸方向に支持するビードシートバンド８と、
周方向に１ヶ所切れ目を有しガター溝１４に装着されて
ビードシードバンド８を軸方向に軸方向外側から支持す
るロックリング９と、からなる。リム１はクランプ１０
により車軸ハブ１１にボルト１２で固定される。2. Description of the Related Art Since a tire for construction machinery has a high rigidity, a wheel rim 1 of a vehicle for construction machinery has a multi-piece structure as shown in FIG. In the multi-piece structure, the rim 1 includes a rim body 3 having a back flange 4 at one end and a gutter portion 5 at the other end, a side ring 6 axially supported by the back flange 4, and a gutter portion 5 side. Another side ring 7 and a bead seat band 8 that axially supports the side ring 7,
The lock ring 9 has one cut in the circumferential direction and is attached to the gutter groove 14 to support the bead seed band 8 from the axially outer side in the axial direction. Crim 10 for rim 1
Is fixed to the axle hub 11 with a bolt 12.
【０００３】[0003]
【発明が解決しようとする課題】マルチピースリムで
は、各部材間の剛性の違いによって、実働時、荷重がか
かった時に、部材相互間に微小な相対変位が生じ、それ
によって部材間に微小な相対すべりが発生する。とくに
リムホイール（ディマウンタブルリム）の場合には、バ
ックフランジ４とサイドリング６との間に、半径方向お
よび周方向の相対すべりが繰返し生じるため、バックフ
ランジ４とサイドリング６との接触面にフレッティング
疲労による亀裂が発生し、リムの耐久性を著しく低下さ
せる場合がある。本発明の目的は、バックフランジとそ
れによって軸方向を支持されるサイドリングとの接触面
のフレッティング疲労を抑制できる建機用マルチピース
リムを提供することにある。In the multi-piece rim, due to the difference in rigidity between the members, a minute relative displacement occurs between the members during actual operation and when a load is applied, which causes a minute relative displacement between the members. Relative slip occurs. Particularly in the case of a rim wheel (demountable rim), relative sliding in the radial direction and the circumferential direction repeatedly occurs between the back flange 4 and the side ring 6, so that the contact surface between the back flange 4 and the side ring 6 In some cases, cracking may occur due to fretting fatigue and the durability of the rim may be significantly reduced. An object of the present invention is to provide a multi-piece rim for a construction machine capable of suppressing fretting fatigue of a contact surface between a back flange and a side ring axially supported by the back flange.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する本発
明の建機用マルチピースリムは次の通りである。 （１）軸方向一端にバックフランジを有するリム本体
と、前記バックフランジに軸方向を支持されるサイドリ
ングとを有する建機用マルチピースリムにおいて、前記
バックフランジと前記サイドリングとの間に、前記リム
本体および前記サイドリングとは別部材からなる挿入部
材を介在させたことを特徴とする建機用マルチピースリ
ム。 （２）前記挿入部材の材料が合成樹脂である請求項１記
載の建機用マルチピースリム。 （３）前記挿入部材の厚さが２〜３ｍｍである請求項１
記載の建機用マルチピースリム。The multi-piece rim for construction machine of the present invention which achieves the above object is as follows. (1) In a multi-piece rim for a construction machine having a rim body having a back flange at one axial end and a side ring axially supported by the back flange, between the back flange and the side ring, A multi-piece rim for construction equipment, wherein an insertion member made of a member different from the rim body and the side ring is interposed. (2) The construction machine multi-piece rim according to claim 1, wherein the material of the insertion member is a synthetic resin. (3) The thickness of the insertion member is 2 to 3 mm.
Multi-piece rim for construction equipment described.
【０００５】[0005]
【作用】上記（１）の建機用マルチピースリムでは、バ
ックフランジとサイドリングとの間に挿入部材を介在さ
せるので、バックフランジと挿入部材との相対すべり
量、およびサイドリングと挿入部材との相対すべり量
は、挿入部材が無い場合のバックフランジとサイドリン
グとの相対すべり量以下となり、バックフランジおよび
サイドリングの挿入部材との接触面のフレッティング疲
労が挿入部材が無い場合に比べて、軽減される。上記
（２）の建機用マルチピースリムでは、挿入部材の材質
を合成樹脂としたので、バックフランジおよびサイドリ
ングの挿入部材との接触面は合成樹脂によって潤滑性
（すべり性）が良好になり、バックフランジおよびサイ
ドリングの挿入部材との接触面のフレッティング疲労が
さらに抑制される。上記（３）の建機用マルチピースリ
ムでは、挿入部材の厚さを２〜３ｍｍとしたので、マル
チピースリムの製造寸法を変えないでも、リム幅の公差
を容易に満足できる。In the multi-piece rim for construction machine of the above (1), since the insertion member is interposed between the back flange and the side ring, the relative slip amount between the back flange and the insertion member, and the side ring and the insertion member. The relative slip amount is less than the relative slip amount between the back flange and the side ring when there is no insertion member, and the fretting fatigue of the contact surface between the back flange and the side ring with the insertion member is less than that when there is no insertion member. , Will be reduced. In the construction machine multi-piece rim described in (2) above, since the material of the insert member is synthetic resin, the contact surfaces of the back flange and the side ring with the insert member have good lubricity (sliding property) due to the synthetic resin. The fretting fatigue of the contact surfaces of the back flange and the side ring with the insertion member is further suppressed. In the construction machine multi-piece rim of the above (3), since the thickness of the insertion member is set to 2 to 3 mm, the rim width tolerance can be easily satisfied without changing the manufacturing size of the multi-piece rim.
【０００６】[0006]
【実施例】本発明実施例の建機用マルチピースリムは、
図１に示す挿入部材１３以外の構造は、図２と同じであ
る。したがって、リム１は、図２に示すように、一端に
バックフランジ４を有し他端にガター部５を有するリム
本体３と、バックフランジ４に軸方向を支持されたサイ
ドリング６、ガター部５側に配されたもう一つのサイド
リング７と、サイドリング７を軸方向に支持するビード
シートバンド８と、周方向に１ヶ所切れ目を有しガター
溝１４に装着されてビードシードバンド８を軸方向に軸
方向外側から支持するロックリング９を有している。リ
ム１はクランプ１０により車軸ハブ１１にボルト１２で
固定される。[Embodiment] The multi-piece rim for construction machine of the embodiment of the present invention is
The structure other than the insertion member 13 shown in FIG. 1 is the same as that of FIG. Therefore, as shown in FIG. 2, the rim 1 includes a rim body 3 having a back flange 4 at one end and a gutter portion 5 at the other end, a side ring 6 axially supported by the back flange 4, and a gutter portion. The other side ring 7 arranged on the 5 side, the bead seat band 8 that axially supports the side ring 7, and the bead seed band 8 that has one cut in the circumferential direction and is attached to the gutter groove 14 It has a lock ring 9 supported in the axial direction from the outside in the axial direction. The rim 1 is fixed to the axle hub 11 with bolts 12 by the clamp 10.
【０００７】本発明実施例の建機用マルチピースリム１
は、図１に示すように、バックフランジ４と、バックフ
ランジ４側のサイドリング６との間に、リム本体３およ
びサイドリング６とは別部材からなる挿入部材１３が介
在されている。挿入部材１３は環状の板状部材からな
り、ガター部５側から脱着される。挿入部材１３は消耗
部品と考え、タイヤ２交換時に一緒に交換する。挿入部
材１３の内径は、リム本体３の挿入部材装着部位の外径
より僅かに大とされ、挿入部材１３の外径は、バックフ
ランジ４の挿入部材１３に隣接している部分の外径と同
じかやや大きいのが望ましい。Multi-piece rim 1 for construction equipment according to an embodiment of the present invention
As shown in FIG. 1, an insertion member 13 which is a member separate from the rim body 3 and the side ring 6 is interposed between the back flange 4 and the side ring 6 on the back flange 4 side. The insertion member 13 is composed of an annular plate-shaped member and is attached and detached from the gutter portion 5 side. The insertion member 13 is considered as a consumable part and is replaced together when the tire 2 is replaced. The inner diameter of the insertion member 13 is slightly larger than the outer diameter of the insertion member mounting portion of the rim body 3, and the outer diameter of the insertion member 13 is equal to the outer diameter of the portion of the back flange 4 adjacent to the insertion member 13. It is desirable that they are the same or slightly larger.
【０００８】挿入部材１３の材料は、リム本体３の材料
（軟鋼）およびサイドリング６の材料（軟鋼）と異な
り、望ましくは合成樹脂からなる。この合成樹脂には、
耐摩耗性のあるものが選定されることが望ましく、たと
えばポリアミド樹脂や超高分子量ポリエチレン等が望ま
しい。挿入部材１３の適性厚さ（リム軸方向厚さ）は、
選定された合成樹脂の耐摩耗性や車両の稼働条件によっ
て異なるが、２〜３ｍｍが望ましい。２ｍｍは、次回の
タイヤ交換まで摩耗しないための限界値であり、３ｍｍ
は厚さを大にするとリム幅（図２のＬ）が狭くなり、リ
ム幅の公差（たとえば、±１２．５ｍｍ）を満足しなく
なることから設定された値である。また、厚さを大にす
ると、タイヤ２とリム１の締め代も減少してきてタイヤ
スリップ（タイヤ２とリム１とのスリップ）の原因とな
るので３ｍｍ以下が望ましい。ただし、３ｍｍなる値は
上限で５ｍｍまで増加してもよい。Unlike the material of the rim body 3 (mild steel) and the material of the side ring 6 (mild steel), the material of the insertion member 13 is preferably made of synthetic resin. This synthetic resin contains
It is desirable to select one having abrasion resistance, for example, polyamide resin or ultra high molecular weight polyethylene. The proper thickness (thickness in the axial direction of the rim) of the insertion member 13 is
Although it depends on the wear resistance of the selected synthetic resin and the operating conditions of the vehicle, it is preferably 2 to 3 mm. 2mm is the limit value to prevent wear until the next tire change, 3mm
Is a value set because the rim width (L in FIG. 2) becomes narrower as the thickness increases, and the rim width tolerance (for example, ± 12.5 mm) cannot be satisfied. Further, if the thickness is increased, the tightening margin between the tire 2 and the rim 1 is also reduced, which causes tire slip (slip between the tire 2 and the rim 1), so 3 mm or less is desirable. However, the value of 3 mm may be increased to 5 mm at the upper limit.
【０００９】つぎに、作用を説明する。バックフランジ
４とサイドリング６との間には、稼働時、車輪にかかる
荷重による各部材間の剛性の違いにより、およびトルク
により、相対変位が生じ、リム半径および周方向に微小
すべりが生じる。本発明実施例ではバックフランジ４と
サイドリング６との間に挿入部材１３が介在しているの
で、バックフランジ４とサイドリング６とのすべり量
は、バックフランジ４と挿入部材１３とのすべり量と、
サイドリング６と挿入部材１３とのすべり量とに分けら
れ、バックフランジ４とその対向部材である挿入部材１
３との相対すべり量、およびサイドリング６とその対向
部材である挿入部材１３との相対すべり量は、挿入部材
１３が無い場合のバックフランジ４とサイドリング６と
の相対すべり量以下になり、バックフランジ４およびサ
イドリング６の、対向部材である挿入部材１３とのフレ
ッティング疲労が軽減される。これは、挿入部材１３の
材料の如何を問わずに成り立つ。Next, the operation will be described. During operation, relative displacement occurs between the back flange 4 and the side ring 6 due to the difference in rigidity between the members due to the load applied to the wheels during operation, and due to the torque, and a slight slip occurs in the rim radius and the circumferential direction. In the embodiment of the present invention, since the insertion member 13 is interposed between the back flange 4 and the side ring 6, the slip amount between the back flange 4 and the side ring 6 is the slip amount between the back flange 4 and the insertion member 13. When,
The back flange 4 and the insertion member 1 that is a member facing the back flange 4 are divided into the amount of slippage between the side ring 6 and the insertion member 13.
The relative slip amount with respect to 3 and the relative slip amount between the side ring 6 and the insert member 13 that is the member opposite thereto are equal to or less than the relative slip amount between the back flange 4 and the side ring 6 when the insert member 13 is not provided, Fretting fatigue of the back flange 4 and the side ring 6 with the insertion member 13 which is a facing member is reduced. This holds regardless of the material of the insert member 13.
【００１０】挿入部材１３の材料が耐摩耗性、すべり性
のある合成樹脂、たとえばポリアミド樹脂、である場合
は、バックフランジ４およびサイドリング６の、挿入部
材１３との接触面の潤滑性が向上され、面を荒らすこと
なく容易にすべることができ、バックフランジ４および
サイドリング６の、挿入部材１３との接触面のフレッテ
ィング疲労がより一層抑えられる。When the material of the insert member 13 is a synthetic resin having abrasion resistance and slip property, for example, a polyamide resin, the lubricity of the contact surfaces of the back flange 4 and the side ring 6 with the insert member 13 is improved. Therefore, the surface can be easily slipped without being roughened, and the fretting fatigue of the contact surfaces of the back flange 4 and the side ring 6 with the insertion member 13 can be further suppressed.
【００１１】挿入部材１３の厚さが２〜３ｍｍと設定さ
れることにより、次回のタイヤ交換まで挿入部材１３が
摩耗してバックフランジ４とサイドリング６が直接こす
れ合うことはなくなり、かつリムの部材の形状寸法を変
えることなくリム幅の公差（たとえば、±１２．５ｍ
ｍ）を容易に満足することができる。また、タイヤ２と
リム１の締め代も適正に保たれ、タイヤスリップを生じ
ることもない。By setting the thickness of the insert member 13 to 2 to 3 mm, the insert member 13 will not be worn and the back flange 4 and the side ring 6 will not be rubbed directly with each other until the next tire replacement, and the rim Tolerance of the rim width without changing the shape of the member (for example, ± 12.5m
m) can be easily satisfied. Further, the tightening margin between the tire 2 and the rim 1 is properly maintained, and tire slip does not occur.
【００１２】[0012]
【発明の効果】請求項１記載の建機用マルチピースリム
によれば、バックフランジとサイドリングとの間に、バ
ックフランジおよびサイドリングとは別部材の挿入部材
を介在させたので、バックフランジとサイドリングの、
対向部材である挿入部材との相対すべり量が、挿入部材
が無い場合のバックフランジおよびサイドリングの対向
部材（バックフランジの対向部材はサイドリング、サイ
ドリングの対向部材はバックフランジ）との相対すべり
量以下となり、すべり接触面のフレッティング疲労が抑
えられる。請求項２記載の建機用マルチピースリムによ
れば、挿入部材の材料を合成樹脂としたので、バックフ
ランジの挿入部材との接触面およびサイドリングの挿入
部材との接触面の、相対すべりによる面荒れが軽減さ
れ、フレッティング疲労がより一層抑えられる。請求項
３の建機用マルチピースリムによれば、挿入部材の厚さ
を２〜３ｍｍとしたので、リム構成部材の形状寸法を変
更することなく、挿入部材を挿入しても、リム幅を公差
内に容易に納めることができる。According to the multi-piece rim for construction equipment of the first aspect, since the back flange and the side ring are provided with the insertion member which is a member different from the back flange and the side ring, the back flange is provided. And of the side ring,
The amount of relative slip with the insert member that is the facing member is the relative slip with the facing member of the back flange and the side ring when there is no insert member (the facing member of the back flange is the side ring, and the facing member of the side ring is the back flange). It is less than the amount, and fretting fatigue on the sliding contact surface is suppressed. According to the multi-piece rim for construction equipment of claim 2, since the material of the insertion member is synthetic resin, the contact surface of the back flange with the insertion member and the contact surface of the side ring with the insertion member depend on relative sliding. Surface roughness is reduced and fretting fatigue is further suppressed. According to the multi-piece slim for construction machine of claim 3, since the thickness of the insertion member is set to 2 to 3 mm, even if the insertion member is inserted without changing the shape dimension of the rim constituent member, the rim width can be reduced. It can be easily fitted within the tolerance.
【図１】本発明の実施例に係る建機用マルチピースリム
の、バックフランジ、サイドリングと、その近傍の拡大
断面図である。FIG. 1 is an enlarged cross-sectional view of a back flange, a side ring, and the vicinity thereof of a multi-piece slim for construction machine according to an embodiment of the present invention.
【図２】本発明の実施例の建機用マルチピースリムのう
ち挿入部材を除く部分、および従来の建機用マルチピー
スリムの、半断面図である。FIG. 2 is a half cross-sectional view of a portion excluding an insertion member of the multi-piece slim for a construction machine according to an embodiment of the present invention and a conventional multi-piece slim for a construction machine.
１ リム ２ タイヤ ４ バックフランジ ６ サイドリング １３ 挿入部材 1 rim 2 tire 4 back flange 6 side ring 13 insertion member
Claims (3)
ム本体と、前記バックフランジに軸方向を支持されるサ
イドリングとを有する建機用マルチピースリムにおい
て、前記バックフランジと前記サイドリングとの間に、
前記リム本体および前記サイドリングとは別部材からな
る挿入部材を介在させたことを特徴とする建機用マルチ
ピースリム。1. A construction machine multi-piece rim having a rim body having a back flange at one axial end thereof and a side ring axially supported by the back flange, wherein the back flange and the side ring are provided. To
A multi-piece rim for construction equipment, wherein an insertion member made of a member different from the rim body and the side ring is interposed.
求項１記載の建機用マルチピースリム。2. The construction machine multi-piece rim according to claim 1, wherein the material of the insertion member is a synthetic resin.
請求項１記載の建機用マルチピースリム。3. The multi-piece rim for a construction machine according to claim 1, wherein the thickness of the insertion member is 2 to 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6309495A JPH08258501A (en) | 1995-03-22 | 1995-03-22 | Multi-piece rim for construction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6309495A JPH08258501A (en) | 1995-03-22 | 1995-03-22 | Multi-piece rim for construction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08258501A true JPH08258501A (en) | 1996-10-08 |
Family
ID=13219386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6309495A Pending JPH08258501A (en) | 1995-03-22 | 1995-03-22 | Multi-piece rim for construction machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08258501A (en) |
-
1995
- 1995-03-22 JP JP6309495A patent/JPH08258501A/en active Pending
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