JP3846818B2 - Tire with lug segment - Google Patents

Description

【００２６】
第５実施例は、前述の図１９に示す従来のリム１５の取付け孔１５ａが１０ケ所では、図４に示す内側と外側のラグセグメント２１，２１の取付けピッチを１／２ずらすことはできないので、タイヤからの振動、騒音を低減することができないとの問題点を改良するものである。
図１０に示すように、リム１５に設けられた取付け孔２０Ｂを用いて図示しないボルトにより油圧モータ等の駆動装置１０に取着している。このリム１５の円周上に複数のラグセグメント２１がボルト２０Ａにより締着している。
本実施例の要旨とするところは、図１０に示す油圧モータ等の駆動装置１０と、リム１５とを取付けるために用いる図示しないボルトの取付け孔２０Ｂの数と、リム１５の円周上に取付けるラグセグメント２１の数との関係を下記式により求めるようにしたものである。
ここで、ｎは自然数、ｂは取付け孔２０Ｂの数、Ｓはラグセググセントの数としたときに、
Ｓ＝（２ｎ−１）×ｂ／２
この式により決定されるラグセグメントの数Ｓは、表１に示すように、例えば、取付け孔２０Ｂの数ｂが１０のときは、ラグセグメントの数Ｓを５または１５，２５，３５，４５のうちのいずれかを選択すれば良い。
図１０に示すように、取付け孔２０Ｂの数ｂが１０のときには、取付け孔２０Ｂの２ピッチ（１ピッチ＝Ｐ1 ）の間に奇数個のラグセグメント２１を配置すれば良いことになる。図１０では５個のラグセグメント２１を配置した例である。これにより、シングルタイヤを２個使用して、ダブルタイヤとして装着する場合、内側タイヤと外側タイヤのラグセグメント２１，２１の取付けピッチを１／２ずらすことができる。
【００２７】
本発明に係るラグセグメントを備えたタイヤの第６実施例を図１乃至図４を参照して、図１１により説明する。
前述の図１９に示す従来のリム１５の取付け孔１５ａが１０ケ所では、図４に示す内側と外側のラグセグメント２１，２１の取付けピッチを１／２ずらすことはできないので、タイヤからの振動、騒音を低減することができないとの問題点を改良するものである。
図１１に示すように、リム１５に設けられた取付け孔２０Ｂを用いて図示しないボルトにより油圧モータ等の駆動装置１０に取着している。このリム１５の円周上に複数のラグセグメント２１がボルト２０Ａにより締着している。
本実施例の要旨とするところは、図１１に示す油圧モータ等の駆動装置１０と、リム１５とを取付けるために用いる図示しないボルトの取付け孔２０Ｂの基準点Ａに対して、ラグセグメント２１が１／２ピッチずれるようにした取付け孔２０Ｂの基準点Ｂを配置するようにしたものである。
図１１に示す状態は、取付け孔２０Ｂの取付けピッチＰ1 に対して基準点Ａから基準点Ｂまでは５ピッチとしてあり、その５ピッチ間にラグセグメント２１が５．５個リム１５に配設されるようにしてある。
これにより、シングルタイヤを２個使用して、ダブルタイヤとして装着する場合、内側タイヤと外側タイヤのラグセグメント２１，２１の取付けピッチを１／２ずらすことができる。
なお、前記取付け孔２０Ｂの基準点Ａと基準点Ｂとは、タイヤの組立てし易さを考慮して適宜位置を変更、あるいは、複数箇所設けるようにしても良い。
すなわち、前記取付け孔２０Ｂの取付けピッチＰ1 に対して基準点Ａから基準点Ｂまでは図１０に示す５ピッチでなくても良く、例えば前記取付け孔２０Ｂの基準点Ａから基準点Ｂまでを３ピッチとした場合は、その３ピッチ間にラグセグメント２１の個数が２．５，３．５，４．５……と１／２個ずれるようにすれば良い。
【００２８】
本発明に係るラグセグメントを備えたタイヤの第７実施例を図１２および図１３により説明する。なお、図１２は正面図であり、側面図は図３と同一であり、図１３は図３のＹ矢視図である。
リム１５Ａは駆動装置１０に回転自在に連結している。リム１５Ａの幅Ｗ１は図６に示したリム１５の幅Ｗに比して十分に広く、ラグセグメント２１を２列に配置できるだけの幅を有している。すなわち、リム１５Ａの外周方向にはＶ形状のラグセグメント２１が内側と外側の２列にボルト２０Ａで締着され、ダブルタイヤ２０を構成している。
ダブルタイヤ２０の外側と内側のラグセグメント２１，２１は、図１３に示すように外側のラグセグメント２１の１ピッチＰ１に対して、内側のラグセグメント２１は１／２ピッチずらすことにより、走行時のタイヤの振動、騒音を低減することができる。
【００２９】
本発明に係るラグセグメントを備えたタイヤの第８実施例を図１４により説明する。
幅の広いリム１５Ａの外周部には幅方向に２列にＶ形状のラグセグメント２１，２１が相互に１／２ピッチずらして、ラグセグメント取付けボルト２０Ａにより締着されている。すなわち、図１２で説明した第７実施例と同様に１個のリム１５Ａでダブルタイヤを構成している。
車体の最外側に配置された所定幅Ｔのラグセグメント２１と、その内側に隣接して配置されたラグセグメント２１との間には所定隙間Ｓが設けられている。
ラグセグメント２１の幅Ｔは、一般車両のタイヤに用いられるタイヤチェーンに適合する幅に設定されており、隙間Ｓはタイヤチェーンの端部を挿入可能な寸法に設定されている。
【００３０】
本発明に係るラグセグメントを備えたタイヤの第９実施例を図１５，図１６により説明する。図１５は正面図であり、図１６は側面図である。
幅が広く、両端部にフランジ部１５Ｃ，１５Ｃを有するリム１５Ｂの外周には幅方向に２列にストレート形状のラグセグメント２１Ｃ，２１Ｃが相互に１／２ピッチずらして、それぞれ２本のラグセグメント取付けボルト２０Ａにより締着されている。車体の最外側に配置された所定幅Ｔのラグセグメント２１Ｃと、その内側に隣接して配置されたラグセグメント２１Ｃとの間には所定隙間Ｓが設けられている。
凍結した道路等を走行する場合には、図に示すように車体の最外側に配置されたラグセグメント２１Ｃにタイヤチェーン２２を装着する。前述のようにラグセグメント２１Ｃの幅Ｔは、一般車両のタイヤに用いられるタイヤチェーン２２に適合する幅に設定されており、隙間Ｓはタイヤチェーン２２の端部を挿入可能な寸法に設定されている。
これにより、一般車両のタイヤ用のタイヤチェーン２２を装着することが可能であり、ラグセグメント２１Ｃを備えたタイヤ用として特別なタイヤチェーンを製作する必要がないので、コストが安価である。
また、外側ラグセグメント２１Ｃに、タイヤチェーンを係止することにより、走行時に車体とタイヤチェーンが干渉する恐れがない。
【００３１】
本発明に係るラグセグメントを備えたタイヤの第１０実施例を図１７により説明する。
リム１５Ｂの外周には車体の最外側に幅Ｔのラグセグメント２１が配置され、その内側には隙間Ｓを設けて幅Ｔ１のラグセグメント２１Ｄが配置されている。この場合、Ｔ１＞Ｔである。
最外側のラグセグメント２１には、図１５で説明した一般車両タイヤに用いられるタイヤチェーン２２が装着可能である。
【００３２】
本発明に係るラグセグメントを備えたタイヤの第１１実施例を図１８により説明する。
リム１５Ｂの外周には車体の最外側に幅Ｔのラグセグメント２１が配置され、その内側には隙間Ｓを設けて幅Ｔ２のラグセグメント２１Ｅが配置され、さらにその内側には隣接して幅Ｔ３のラグセグメント２１Ｆが配置されている。すなわち、ラクセグメントを３列に配置したものである。
最外側のラグセグメント２１には、図１５で説明した一般車両タイヤに用いられるタイヤチェーン２２が装着可能である。
【００３３】
図１４乃至図１８で説明したラグセグメントを備えたタイヤは、ラグセグメントの幅を最外側のラグセグメント２１の幅Ｔを、一般車両タイヤに用いられるタイヤチェーン２２に適合させ、隣接するラグセグメントとの隙間Ｓを、タイヤチェーン２２の端部が挿入可能な寸法となるようにすれば良い。
【００３４】
本発明のラグセグメントを備えたタイヤを装輪式建設車両で説明したが、これ以外のクレーン車、ホイールローダ等の建設車両、および産業車両に適用できることは言うまでもない。
【図面の簡単な説明】
【図１】装輪式建設車両の側面図である。
【図２】本発明に係るシングルタイヤ用リムを２個連結してダブルタイヤとしてラグセグメントを備えたタイヤの取付構造を説明する図である。
【図３】同、図２のＺ視図である。
【図４】同、図３のＹ視図である。
【図５】同、図４のＡ−Ａ断面図である。
【図６】（ａ）は本発明に係る第１実施例のラグセグメントをＶ型に取付けた構成、および（ｂ）はラグセグメントを逆Ｖ型に取付けた構成を説明する図である。
【図７】（ａ）は本発明に係る第２実施例のラグセグメントをＶ型に取付けた構成、および（ｂ）はラグセグメントを逆Ｖ型に取付けた構成を説明する図である。
【図８】（ａ）は本発明に係る第３実施例のストレート型のラグセグメントを取付けた構成、および（ｂ）はストレート型のラグセグメントを逆向きに取付けた構成を説明する図である。
【図９】（ａ）は本発明に係る第４実施例のストレート型のラグセグメントを取付けた構成、および（ｂ）はストレート型のラグセグメントを逆向きに取付けた構成を説明する図である。
【図１０】本発明に係る第５実施例の１／２ピッチずらして取付けるためのラグセグメントの配置を説明する図である。
【図１１】本発明に係る第６実施例の１／２ピッチずらして取付けるためのラグセグメントの配置を説明する図である。
【図１２】本発明に係る第７実施例の１個のリムの外周方向に２列のラグセグメントを配置したダブルタイヤの構成を説明する図である。
【図１３】同、平面図である。
【図１４】本発明に係る第７実施例のダブルタイヤにタイヤチェーンを装着するためのラグセグメントの配置を説明する図である。
【図１５】本発明に係る第８実施例のダブルタイヤにタイヤチェーンを装着するためのラグセグメントの配置を説明する図である。
【図１６】図１３のものの側面図である。
【図１７】本発明に係る第９実施例のダブルタイヤにタイヤチェーンを装着するためのラグセグメントの配置を説明する図である。
【図１８】本発明に係る第１０実施例のトリプルタイヤにタイヤチェーンを装着するためのラグセグメントの配置を説明する図である。
【図１９】従来のリムとラグセグメントを備えたタイヤを説明する図である。
【図２０】同、図１７のＸ視図でシングルタイヤを説明する図である。
【図２１】同、ダブルタイヤを説明する図である。
【図２２】同、（ａ），（ｂ）はＶ型または逆Ｖ型のラグセグメントに取付けるときのリムに設ける追加工する取付け孔を説明する図である。
【図２３】同、（ａ）は左側タイヤを示し、（ｂ）は（ａ）のＶ視図である。
【図２４】同、（ａ）は右側タイヤを示し、（ｂ）は（ａ）のＷ視図である。
【図２５】同、タイヤにタイヤチェーンを装着した状態を説明する図である。
【符号の説明】
１５，１５Ａ，１５Ｂ リム
２０ タイヤ
２０Ａ ラグセグメント取付けボルト
２０Ｂ リム取付け孔
２１，２１Ａ，２１Ｂ，２１Ｃ，２１Ｄ，２１Ｅ，２１Ｆ ラグセグメント
２２ タイヤチェーン
Ａ1 第１取付け孔
Ａ2 第２取付け孔
Ａ3 第３取付け孔
Ｂ2 第４取付け孔
Ｆ1 第５取付け孔
Ｆ2 第６取付け孔
Ｆ3 第７取付け孔
Ｈ1 第８取付け孔
Ｇ2 第９取付け孔
Ａ 基準点
Ｂ 基準点[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tire of a wheeled construction vehicle, and particularly, when a mounting direction of a plurality of lug segments arranged in the outer peripheral direction of the rim is replaced with a right tire and a left tire, a mounting hole is added to the rim. The present invention relates to a tire provided with lug segments that can easily change the mounting direction of the left and right tires without any work.
[0002]
[Prior art]
A tire equipped with a conventional lug segment will be described with reference to FIGS. As shown in FIG. 19, a number of lug segments 21 are attached to the outer periphery of the rim 15 by bolts 20A. In order to attach the rim 15 to a drive device (not shown), ten attachment holes 15a of the rim 15 are provided on the circumference.
FIG. 20 of the X view of FIG. 19 shows a single tire, and V-shaped lug segments 21 are attached to the rim 15 by bolts 20A at a predetermined interval. FIG. 21 shows an example of a double tire, and the mounting pitches of the inner and outer lug segments 21 and 21 in the two rows with respect to the rim 15 are the same.
[0003]
When a V-shaped lug segment is attached to one rim 15 shown in FIG. 20 and used as a left tire, and the left tire is reversed to be used as a right tire, the lug segment 21 becomes an inverted V-shape and cannot be used.
For this reason, conventionally, in the case of a single tire, two types of rims are prepared for left and right tires.
[0004]
Further, as shown in FIG. 22A, mounting holes M 1 to Q 4 of the V-shaped lug segment 21 are opened in the rim 15. The mounting holes used when attaching the V-shaped lug segment 21 to the state shown in FIG. 22A are M1, M2, M3, and M4. The mounting holes of adjacent lug segments (not shown) are Q1, Q2, Q3, and Q4.
FIG. 23A and FIG. 23B show the left tire provided with the lug segment 21. When the left tire is reversed and used for the right tire, as shown in FIG. 22 (b), the lug segment 21 is attached in the inverted V shape using the mounting holes N1, Q2, Q3, N2, If it is then reversed, it can be oriented in the same direction as the V-shaped lug segment of FIGS. 24 (a) and 24 (b).
[0005]
By the way, when used as a double tire shown in FIG. 21, the actual situation is that the mounting pitches of the inner and outer lug segments 21 and 21 are the same, and the vibration and noise from the tire are large. .
For this reason, when using as a double tire, four types of rims are prepared.
[0006]
Furthermore, when a wheeled construction vehicle equipped with tires equipped with lug segments travels on a frozen road or the like, as shown in FIG. 25, the lug segments attached in double rows in the outer peripheral direction of the rim 15 A tire chain 22 </ b> A that covers the entire tires 21, 21 equipped with the tire is mounted.
The tire chain 22A is not used for a double tire of a general vehicle, and a particularly wide tire chain is prepared.
[0007]
[Problems to be solved by the invention]
However, it is expensive to prepare several types of rims as described above.
Also, in order to attach the V-shaped lug segment to the left and right tires, as shown in FIGS. 22 (a) and 22 (b), it is not used when used as the left tire, but is used when used as the right tire. The holes N1, N2, P1, and P2 need to be additionally machined in the rim, and the number of manufacturing steps is large.
[0008]
Further, as shown in FIG. 19, the mounting holes 15a of the conventional rim 15 are provided at 10 locations on the circumference, and the angle θ3 between the adjacent mounting holes 15a and 15a is 36 °.
Twenty-two lug segments 21 are provided on the circumference, and one attachment angle of the lug segment 21 is 360 ° / 22 = 16.36 °.
The number of lug segments 21 that can be mounted within the range of the angle θ3 (36 °) of the mounting holes 15a, 15a is 36 ° / 16.36 ° = 2.2.
Therefore, as shown in FIG. 4 of the present invention, when two single tires are used and mounted as a double tire, the outer lug segment 21 is shifted by 1/2 pitch with respect to the inner lug segment 21 of the double tire. I can't.
As described above, in the case of a double tire, in order to reduce vibration and noise from the tire, it is necessary to shift the mounting pitch of the inner and outer lug segments 21 and 21 by 1/2.
[0009]
In addition, when attaching a tire chain when a wheeled construction vehicle travels on a frozen road or the like, as described above, a wide tire chain that covers the entire tire with double-row lug segments is specially used. It is necessary to prepare and the cost is high.
Furthermore, when the gap between the outer end of the vehicle body and the tire is narrow, there is a problem that the tire chain contacts the vehicle body.
[0010]
The present invention pays attention to the above-mentioned problems of the prior art and improves the lug segment mounting holes so that the tire can be exchanged from the left side to the right side (or from the right side to the left side) even with the same rim. When using a single tire as a double tire, it is possible to prevent the vibration and noise of the tire by shifting the mounting pitch of the inner and outer lug segments to 1/2, and the tire chain used for the tire of a general vehicle is equipped with the lug segment. It is an object of the present invention to provide a tire including a lug segment that can be attached to the vehicle and does not interfere with the vehicle body and the tire chain during traveling.
[0011]
[Means, actions and effects for solving the problems]
In order to achieve the above object, a first invention of a tire provided with lug segments according to the present invention provides a tire including lug segments that are attached adjacently in the outer circumferential direction of the rim, along the outer circumferential direction of the rim. Two mounting holes provided so as to be symmetrical with respect to each other about a straight line passing through the center in the width direction of the rim, and a V-shape together with the two mounting holes on a straight line passing through the center in the width direction of the rim. A plurality of mounting hole groups having one mounting hole provided as depicted are arranged at a mounting pitch along the outer peripheral direction of the rim, and a V-shaped top formed by the two mounting holes and one mounting hole. The mounting pitch is determined such that the corner is equal to the V-shaped apex angle formed by the two mounting holes and one mounting hole belonging to the mounting hole group adjacent thereto.
[0012]
The second invention is a tire having a plurality of lug segments attached adjacent to each other in the outer circumferential direction of the rim, and is symmetrical with respect to each other about a straight line passing through the center in the width direction of the rim along the outer circumferential direction of the rim. Two mounting holes provided so as to be spaced apart from the straight line connecting the two mounting holes in the outer circumferential direction, and passing through the center in the width direction of the rim at a narrower interval than the two mounting holes. A plurality of mounting hole groups having a plurality of mounting holes provided so as to be line symmetric are arranged at a mounting pitch along the outer peripheral direction of the rim, and a straight line passing through the center in the width direction of the two mounting holes. A straight line connecting a mounting hole disposed on one side with a mounting hole disposed on one side with respect to a straight line passing through the center in the width direction among the plurality of mounting holes, and the two Mounting hole A mounting hole of the person who placed the other side with respect to a straight line passing through the widthwise center of the attachment hole and the plurality of mounting holes towards the respect to the straight line passing through the widthwise center positioned on the other side The plurality of attachments belonging to a group of attachment holes adjacent to the attachment hole disposed on one side of the two attachment holes with respect to the straight line passing through the center in the width direction. a straight line connecting the mounting hole towards disposed on one side with respect to a straight line passing through the widthwise center of the hole, the other side with respect to a straight line passing through the widthwise center of the two mounting holes A straight line that connects a mounting hole that is disposed and a mounting hole that is disposed on the other side with respect to a straight line passing through the center in the width direction among the plurality of mounting holes belonging to the mounting hole group adjacent thereto Determine the mounting pitch so that it is equal to the angle between There.
[0013]
According to a third aspect of the present invention, in the tire provided with a plurality of lug segments that are mounted adjacent to each other in the outer peripheral direction of the rim, one mounting hole provided on a straight line passing through the center in the width direction of the rim along the outer peripheral direction of the rim. And a plurality of mounting hole groups having a mounting pitch along the outer peripheral direction of the rim, the mounting holes having two mounting holes provided so as to be point symmetric with respect to the one mounting hole as a center of symmetry. An angle formed by a straight line passing through the group with respect to the width direction of the rim is a straight line connecting one of the two mounting holes belonging to the mounting hole group and one mounting hole belonging to the mounting hole group adjacent thereto. The mounting pitch is determined so as to be equal to an angle formed with respect to the width direction.
[0014]
According to a fourth aspect of the present invention, there is provided a plurality of attachments provided at equal intervals on a straight line forming a predetermined angle with respect to the width direction of the rim in a tire including a plurality of lug segments attached adjacent to each other in the outer peripheral direction of the rim. A plurality of mounting hole groups having holes are arranged at a mounting pitch along the outer peripheral direction of the rim, and the second mounting hole from the end side of the mounting hole group closest to the mounting hole group and the mounting hole group adjacent thereto. The mounting pitch is determined so that the angle formed by the straight line connecting with the width direction of the rim is equal to the angle formed by the straight line formed by the mounting hole group with respect to the width direction of the rim.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a tire provided with lug segments according to the present invention will be described below with reference to FIGS. In addition, what attached | subjected the same code | symbol as FIG. 19 thru | or FIG. 25 is the same.
First, a wheeled construction vehicle 5 shown in FIG. 1 includes a lower traveling body 1 on which tires 20 are rotatably disposed, an upper swing body 2 on which a cab 3 is placed, and a work machine 4 including a boom, an arm, and a bucket. Equipped with.
As shown in FIG. 2, rims 15 and 15 are connected to a driving device 10 such as a hydraulic motor. On the rims 15 and 15, lug sec cements 21 and 21 formed of an elastic body such as rubber are fixed with bolts 20A and 20A.
Although FIG. 2 shows the structure of a double tire, a single tire may be used.
In addition, the double tire shown in FIG. 2 is formed by connecting two rims 15 and 15 for a single tire and can also be used as a rim for a single tire.
Next, FIG. 3 of the Z view of FIG. 2, FIG. 4 of the Y view of FIG. 3, and FIG. 5 of the AA sectional view of FIG.
The driving device 10 connects the rim 15 rotatably. A large number of V-shaped lug segments 21 and 21 are arranged on the outer periphery of the rim 15 at predetermined intervals, and are fixed by bolts 20A. The number of mounting bolts 20A of the lug segment 21 is four in the figure, but the number of bolts can be appropriately increased or decreased depending on the size of the rim or the like.
As shown in FIGS. 3 and 5, the lug segment 21 has a hollow portion 21b. The hollow portion 21b is provided with a projection 21c that makes the hollow portion 21b substantially U-shaped or U-shaped.
The structure in which the inner and outer lug segments 21 and 21 of the double tire are shifted by 1/2 pitch will be described later, but the inner lug segment 21 is 1 for one pitch P1 of the outer lug segment 21 as shown in FIG. / 2 pitch P2 is shifted.
Thus, by shifting the lug segments on the inner side (or on the outer side relative to the inner side) by 1/2 pitch with respect to the outer side, it is possible to reduce tire vibration and noise during traveling.
In the embodiment of the present invention, a bolt is fixed to the lug segment, and a mounting hole is provided in the rim facing the bolt.
Bolts fixed to the lug segments may be inserted into the rim mounting holes and fastened.
In addition, an attachment hole is provided in the lug segment, and an attachment hole is provided in the rim facing the attachment hole of the lug segment.
The lug segment mounting hole and the rim mounting hole may be positioned and bolts may be inserted and tightened.
[0020]
A first embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIGS. 6 (a) and 6 (b). The V-shaped lug segment 21 and the rim 15 are provided with mounting holes A1 to A3 in the rim 15, respectively. As shown in FIG. 6A, the width of the rim 15 is W. There are three mounting holes (A1 to A3, or B1 to B3, C1 to C3, ...) for the V-shaped lug segment 21, the spacing between the mounting holes A, the mounting pitch of the lug segments 21, and the V of the lug segment 21 When the angle θ of the character is
B = 2Atanα (where α = (π−θ) / 2 , 2A <W)
Thereby, the mounting pitch B of the lug segment 21 is set. Thus, by setting the mounting holes (A1 to A3,...) Of the V-shaped lug segment 21, the lug segment 21 is brought into the inverted V-shaped state of FIG. Can be mounted using A3. Therefore, when the lug segment 21 described in FIGS. 22 (a) and 22 (b) is mounted in the inverted V-shaped state, the left tire rim and the right tire rim are added without additional mounting holes. Tire rims can be shared.
[0021]
A second embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIGS. 7 (a) and 7 (b). 7 (a) and 7 (b), even when the mounting holes (D1 to D4 or E1 to E4) of the V-shaped lug segment 21 are provided at four places, the above-described FIGS. The same relationship as in b) holds. As shown in FIG. 7A, the width of the rim 15 is arbitrarily set to W and C. There are four mounting holes (D1 to D4 or E1 to E4) for the V-shaped lug segment 21. The mounting holes D1-D2, D3-D4 are spaced A, and the mounting pitch of the lug segments 21 is B. When the V-shaped angle θ is taken,
B = 2Atan α (where α = (π−θ) / 2 , 2 (A + C) <W)
Thereby, the mounting pitch B of the lug segment 21 is set. Thus, by setting the mounting holes (D1 to D4,...) Of the V-shaped lug segment 21, the lug segment 21 is brought into the inverted V-shaped state of FIG. Can be mounted using E3 and D4. Therefore, when the lug segment 21 described in FIGS. 22 (a) and 22 (b) is mounted in the inverted V-shaped state, the left tire rim and the right tire rim are added without additional mounting holes. Tire rims can be shared. Further, it goes without saying that the same relationship as in FIGS. 6A and 6B is established even when the number of attachment holes of the lug segment 21 is 2, 5, 6,.
[0022]
A third embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIGS. 8 (a) and 8 (b). Even when the mounting holes (F1 to F3, or G1 to G3, H1 to H3) of the straight lug segment 21A are provided at three locations, the same relationship as in FIGS. 6 (a) and 6 (b) is established.
As shown in FIG. 8A, the width of the rim 15 is W. When the mounting holes (F1 to F3...) Of the straight lug segment 21A are three places, the interval A between the mounting holes F1-F2, F2-F3, and the mounting pitch of the lug segments 21A are B.
B = 2Atanα
(However, 2A <W)
Thereby, the mounting pitch B of the lug segment 21A is set.
Thus, by setting the mounting holes (F1 to F3...) Of the straight lug segment 21A, the lug segment 21A is lowered to the left in FIG. 8B and the mounting holes H1, G2, F3 are used. Can be installed.
Therefore, when the lug segment is attached in the reverse straight state, the left tire rim and the right tire rim can be used in common without adding a new attachment hole.
[0023]
A fourth embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIGS. 9 (a) and 9 (b). Even when the mounting holes (I1 to I4, or J1 to J4, K1 to K4, and L1) of the straight lug segment 21B are provided at four locations, the same relationship as in FIGS. 6 (a) and 6 (b) is obtained. It holds.
As shown in FIG. 9A, the width of the rim 15 is W. When the mounting holes (I1 to I4...) Of the straight lug segment 21B are four places, the interval A between the mounting holes I1-I2, I2-I3, I4 and the mounting pitch of the lug segments 21B are B.
B = 2Atanα
(However, 3A <W)
Thereby, the mounting pitch B of the lug segment 21B is set.
In this way, by setting the mounting holes (I1 to I4...) Of the straight lug segment 21B, the lug segment 21B is lowered to the left in FIG. 9B and the mounting holes L1, K2, J3, I4. Can be installed using.
Therefore, when the lug segment is attached in the reverse straight state, the left tire rim and the right tire rim can be used in common without adding a new attachment hole.
Further, it goes without saying that the same relationship as in FIGS. 6A and 6B is established even when the number of attachment holes of the lug segment 21 is 2, 5, 6,.
[0024]
A fifth embodiment of a tire having lug segments according to the present invention will be described with reference to FIGS. 1 to 4 and FIG.
[0025]
[Table 1]

[0026]
In the fifth embodiment, when the mounting holes 15a of the conventional rim 15 shown in FIG. 19 are 10 places, the mounting pitch of the inner and outer lug segments 21 and 21 shown in FIG. This is to improve the problem that vibration and noise from the tire cannot be reduced .
As shown in FIG. 10, a mounting hole 20 </ b> B provided in the rim 15 is attached to the driving device 10 such as a hydraulic motor by a bolt (not shown). A plurality of lug segments 21 are fastened to the circumference of the rim 15 by bolts 20A.
The gist of the present embodiment is that the number of mounting holes 20B of bolts (not shown) used for mounting the driving device 10 such as the hydraulic motor shown in FIG. 10 and the rim 15 and the circumference of the rim 15 are mounted. The relationship with the number of lug segments 21 is obtained by the following formula.
Here, n is a natural number, b is the number of mounting holes 20B, and S is the number of lag segments.
S = (2n−1) × b / 2
As shown in Table 1, the number S of lug segments determined by this equation is, for example, when the number b of the mounting holes 20B is 10, the number S of lug segments is 5 or 15, 25, 35, 45. Select one of them.
As shown in FIG. 10, when the number b of the mounting holes 20B is 10, an odd number of lug segments 21 may be arranged between two pitches (1 pitch = P1) of the mounting holes 20B. FIG. 10 shows an example in which five lug segments 21 are arranged. Thereby, when using as a double tire using two single tires, the attachment pitch of the lug segments 21 and 21 of an inner side tire and an outer side tire can be shifted 1/2.
[0027]
A sixth embodiment of a tire having lug segments according to the present invention will be described with reference to FIGS. 1 to 4 and FIG.
When the mounting holes 15a of the conventional rim 15 shown in FIG. 19 are 10 places, the mounting pitch of the inner and outer lug segments 21 and 21 shown in FIG. 4 cannot be shifted by 1/2. This is to improve the problem that noise cannot be reduced .
As shown in FIG. 11, a mounting hole 20 </ b> B provided in the rim 15 is attached to a driving device 10 such as a hydraulic motor with a bolt (not shown). A plurality of lug segments 21 are fastened to the circumference of the rim 15 by bolts 20A.
The gist of the present embodiment is that the lug segment 21 is located with respect to a reference point A of a mounting hole 20B of a bolt (not shown) used for mounting the driving device 10 such as a hydraulic motor shown in FIG. The reference point B of the mounting hole 20B that is shifted by ½ pitch is arranged.
In the state shown in FIG. 11, there are five pitches from the reference point A to the reference point B with respect to the mounting pitch P1 of the mounting hole 20B, and 5.5 lug segments 21 are arranged on the rim 15 between the five pitches. It is made to do.
Thereby, when using as a double tire using two single tires, the attachment pitch of the lug segments 21 and 21 of an inner side tire and an outer side tire can be shifted 1/2.
The reference point A and the reference point B of the mounting hole 20B may be appropriately changed in position or provided at a plurality of locations in consideration of ease of assembling the tire.
That is, the reference point A to the reference point B may not be the five pitches shown in FIG. 10 with respect to the attachment pitch P1 of the attachment hole 20B. For example, the reference point A to the reference point B of the attachment hole 20B is 3 In the case of the pitch, the number of lug segments 21 may be shifted by a half of 2.5, 3.5, 4.5... Between the three pitches.
[0028]
A seventh embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIGS. 12 is a front view, a side view is the same as FIG. 3, and FIG. 13 is a view taken in the direction of arrow Y in FIG.
The rim 15A is rotatably connected to the driving device 10. The width W1 of the rim 15A is sufficiently wider than the width W of the rim 15 shown in FIG. 6, and is wide enough to arrange the lug segments 21 in two rows. That is, the V-shaped lug segments 21 are fastened to the inner and outer two rows by the bolts 20 </ b> A in the outer peripheral direction of the rim 15 </ b> A to constitute the double tire 20.
As shown in FIG. 13, the outer and inner lug segments 21 and 21 of the double tire 20 are shifted by 1/2 pitch with respect to one pitch P1 of the outer lug segment 21, so that the The vibration and noise of the tire can be reduced.
[0029]
An eighth embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIG.
V-shaped lug segments 21 and 21 in two rows in the width direction are shifted from each other by 1/2 pitch on the outer peripheral portion of the wide rim 15A and fastened by lug segment mounting bolts 20A. That is, as in the seventh embodiment described with reference to FIG. 12, a single rim 15A constitutes a double tire.
A predetermined gap S is provided between the lug segment 21 having a predetermined width T disposed on the outermost side of the vehicle body and the lug segment 21 disposed adjacent to the inner side.
The width T of the lug segment 21 is set to a width suitable for a tire chain used for a tire of a general vehicle, and the gap S is set to a dimension in which an end of the tire chain can be inserted.
[0030]
A ninth embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIGS. 15 is a front view, and FIG. 16 is a side view.
The rim 15B is wide and has flange portions 15C and 15C at both ends. Straight lug segments 21C and 21C are shifted by 1/2 pitch in two rows in the width direction. It is fastened by a mounting bolt 20A. A predetermined gap S is provided between the lug segment 21C having a predetermined width T disposed on the outermost side of the vehicle body and the lug segment 21C disposed adjacent to the inner side thereof.
When traveling on a frozen road or the like, a tire chain 22 is attached to a lug segment 21C disposed on the outermost side of the vehicle body as shown in the figure. As described above, the width T of the lug segment 21C is set to a width suitable for a tire chain 22 used for a tire of a general vehicle, and the gap S is set to a dimension in which an end of the tire chain 22 can be inserted. Yes.
Thereby, it is possible to mount the tire chain 22 for tires of a general vehicle, and it is not necessary to manufacture a special tire chain for the tire including the lug segment 21C, so that the cost is low.
Further, by locking the tire chain to the outer lug segment 21C, there is no possibility that the vehicle body and the tire chain interfere with each other during traveling.
[0031]
A tenth embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIG.
On the outer periphery of the rim 15B, a lug segment 21 having a width T is disposed on the outermost side of the vehicle body, and a lug segment 21D having a width T1 is disposed on the inner side thereof with a gap S therebetween. In this case, T1> T.
The outermost lug segment 21 can be fitted with a tire chain 22 used for the general vehicle tire described in FIG.
[0032]
An eleventh embodiment of a tire provided with lug segments according to the present invention will be described with reference to FIG.
On the outer periphery of the rim 15B, a lug segment 21 having a width T is disposed on the outermost side of the vehicle body, and a lug segment 21E having a width T2 is disposed on the inner side thereof with a clearance S therebetween. Lug segments 21F are arranged. That is, the lac segments are arranged in three rows.
The outermost lug segment 21 can be fitted with a tire chain 22 used for the general vehicle tire described in FIG.
[0033]
In the tire having the lug segment described in FIGS. 14 to 18, the width T of the outermost lug segment 21 is adapted to the tire chain 22 used for general vehicle tires, and the adjacent lug segments are arranged. The gap S may be such that the end of the tire chain 22 can be inserted.
[0034]
Although the tire provided with the lug segment of the present invention has been described with the wheeled construction vehicle, it goes without saying that it can be applied to other construction vehicles such as crane vehicles, wheel loaders, and industrial vehicles.
[Brief description of the drawings]
FIG. 1 is a side view of a wheeled construction vehicle.
FIG. 2 is a diagram illustrating a tire mounting structure in which two rims for a single tire according to the present invention are connected to each other and a lug segment is provided as a double tire.
FIG. 3 is a Z view of FIG. 2;
4 is a Y view of FIG. 3; FIG.
5 is a cross-sectional view taken along the line AA in FIG.
FIGS. 6A and 6B are diagrams illustrating a configuration in which the lug segment of the first embodiment according to the present invention is attached to a V shape, and FIG. 6B is a diagram illustrating a configuration in which the lug segment is attached to an inverted V shape.
FIGS. 7A and 7B are diagrams illustrating a configuration in which the lug segment of the second embodiment according to the present invention is attached to a V-shape, and FIG. 7B is a diagram illustrating a configuration in which the lug segment is attached to an inverted V-shape.
FIGS. 8A and 8B are diagrams illustrating a configuration in which a straight lug segment according to a third embodiment of the present invention is attached, and FIG. 8B is a diagram illustrating a configuration in which a straight lug segment is attached in an opposite direction. .
FIGS. 9A and 9B are diagrams illustrating a configuration in which straight type lug segments according to a fourth embodiment of the present invention are attached, and FIG. 9B is a diagram illustrating a configuration in which straight type lug segments are attached in the reverse direction; .
FIG. 10 is a diagram for explaining the arrangement of lug segments for mounting with a ½ pitch shift according to the fifth embodiment of the present invention.
FIG. 11 is a diagram illustrating the arrangement of lug segments for mounting with a ½ pitch shift according to the sixth embodiment of the present invention.
FIG. 12 is a diagram illustrating a configuration of a double tire in which two rows of lug segments are arranged in the outer peripheral direction of one rim according to the seventh embodiment of the present invention.
FIG. 13 is a plan view of the same.
FIG. 14 is a view for explaining the arrangement of lug segments for attaching a tire chain to a double tire according to a seventh embodiment of the present invention.
FIG. 15 is a view for explaining the arrangement of lug segments for attaching a tire chain to a double tire according to an eighth embodiment of the present invention.
16 is a side view of that of FIG. 13. FIG.
FIG. 17 is a view for explaining the arrangement of lug segments for attaching a tire chain to a double tire according to a ninth embodiment of the present invention.
FIG. 18 is a view for explaining the arrangement of lug segments for attaching a tire chain to a triple tire according to a tenth embodiment of the present invention.
FIG. 19 is a diagram for explaining a conventional tire including a rim and a lug segment.
FIG. 20 is a view for explaining a single tire in the X view of FIG. 17;
FIG. 21 is a view for explaining a double tire.
FIGS. 22A and 22B are views for explaining additional mounting holes provided in the rim for mounting on a V-type or reverse V-type lug segment. FIGS.
23A shows the left tire, and FIG. 23B is a V view of FIG. 23A.
24A shows the right tire, and FIG. 24B is a W view of FIG. 24A.
FIG. 25 is a view for explaining a state where a tire chain is mounted on the tire.
[Explanation of symbols]
15, 15A, 15B Rim 20 Tire 20A Lug segment mounting bolt 20B Rim mounting holes 21, 21A, 21B, 21C, 21D, 21E, 21F Lug segment 22 Tire chain A1 First mounting hole A2 Second mounting hole A3 Third mounting hole B2 4th mounting hole F1 5th mounting hole F2 6th mounting hole F3 7th mounting hole H1 8th mounting hole G2 9th mounting hole A Reference point B Reference point

Claims (4)

In the tire with lug segments (21) that are attached adjacent to each other in the outer circumferential direction of the rim (15),
Two mounting holes (A1, A3) provided so as to be symmetrical with respect to each other about a straight line passing through the center in the width direction of the rim (15) along the outer peripheral direction of the rim (15);
A mounting hole group (A1) having one mounting hole (A2) provided to draw a V shape together with the two mounting holes (A1, A3) on a straight line passing through the center in the width direction of the rim (15). -A3) are arranged in multiple numbers (A1-A3, B1-B3, C1-C3) at the mounting pitch (B) along the outer peripheral direction of the rim (15),
The V-shaped apex angle (θ) formed by the two mounting holes (A1, A3) and one mounting hole (A2) is the two mounting holes (A1, A3) and a group of mounting holes adjacent thereto. The lug segment is characterized in that the mounting pitch (B) is determined to be equal to the V-shaped apex angle (θ) formed by one mounting hole (B2) belonging to (B1-B3). Tires provided. In a tire with lug segments attached adjacent to each other in the outer circumferential direction of the rim,
Two mounting holes (D1, D4) provided so as to be symmetrical with respect to each other about a straight line passing through the center in the width direction of the rim (15) along the outer peripheral direction of the rim (15);
A straight line that is separated from the straight line connecting the two mounting holes (D1, D4) in the outer circumferential direction and passes through the center in the width direction of the rim (15) at a narrower interval than the two mounting holes (D1, D4). A plurality of mounting hole groups (D1-D4) having a plurality of mounting holes (D2, D3) provided so as to be symmetrical with each other are arranged at a mounting pitch (B) along the outer peripheral direction of the rim (15). (D1-D4, E1-E4)
Of the two mounting holes (D1, D4), the mounting hole (D1) arranged on one side with respect to the straight line passing through the center in the width direction and the width of the plurality of mounting holes (D2, D3) A straight line connecting the mounting hole (D2) arranged on one side with respect to a straight line passing through the center of the direction;
Of the two mounting holes (D1, D4), the width of the mounting hole (D4) disposed on the other side with respect to the straight line passing through the center in the width direction and the width of the plurality of mounting holes (D2, D3) The angle (θ) formed by the straight line connecting the mounting hole (D3) on the other side with respect to the straight line passing through the center of the direction,
Of the two mounting holes (D1, D4), the mounting hole (D1) disposed on one side with respect to the straight line passing through the center in the width direction, and the mounting hole group (E1-E4) adjacent thereto A straight line connecting the mounting holes (E2) arranged on one side with respect to a straight line passing through the center in the width direction among the plurality of mounting holes (E2, E3) belonging to,
Of the two mounting holes (D1, D4), the mounting hole (D4) disposed on the other side with respect to the straight line passing through the center in the width direction, and a group of mounting holes (E1-E4) adjacent thereto The angle (θ) formed by the straight line connecting the mounting hole (E3) arranged on the other side with respect to the straight line passing through the center in the width direction among the plurality of mounting holes (E2, E3) belonging to The tire having a lug segment, wherein the mounting pitch (B) is determined to be equal to In the tire with lug segments (21) that are attached adjacent to each other in the outer circumferential direction of the rim (15),
One mounting hole (F2) provided on a straight line passing through the center in the width direction of the rim (15) along the outer peripheral direction of the rim (15);
A group of mounting holes (F1-F3) having two mounting holes (F1, F3) provided so as to be point-symmetric with each other with the one mounting hole (F2) as the center of symmetry is the outer periphery of the rim (15). Place multiple (F1-F3, G1-G3, H1-H3) with mounting pitch (B) along the direction,
The angle (α) formed by the straight line passing through the mounting hole group (F1-F3) with respect to the width direction of the rim (15) is two mounting holes (F1, F3) belonging to the mounting hole group (F1-F3). Angle (α) formed by a straight line connecting one of the two (F3) and one mounting hole (G2) belonging to the mounting hole group (G1-G3) adjacent thereto with respect to the width direction of the rim (15) The tire having a lug segment, wherein the mounting pitch (B) is determined to be equal to In the tire with lug segments (21) that are attached adjacent to each other in the outer circumferential direction of the rim (15),
Mounting hole group (I1-I4) having a plurality of mounting holes (I1, I2, I3, I4) provided at the same interval on a straight line forming a predetermined angle (α) with respect to the width direction of the rim (15) Are arranged at a mounting pitch (B) along the outer peripheral direction of the rim (15) (I1-I4, J1-J4, K1-K4, L1 ),
The straight line connecting the mounting hole (I4) at the end of the mounting hole group (I1-I4) and the second mounting hole (J3) from the end of the mounting hole group (J1-J4) adjacent thereto is the rim. The angle (α) formed with respect to the width direction of (15) is such that the straight line formed by the mounting hole group (I1-I4) is equal to the angle (α) formed with respect to the width direction of the rim (15). The tire having a lug segment, wherein the mounting pitch (B) is defined.

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