JPS6123444Y2 - - Google Patents

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Publication number
JPS6123444Y2
JPS6123444Y2 JP16087881U JP16087881U JPS6123444Y2 JP S6123444 Y2 JPS6123444 Y2 JP S6123444Y2 JP 16087881 U JP16087881 U JP 16087881U JP 16087881 U JP16087881 U JP 16087881U JP S6123444 Y2 JPS6123444 Y2 JP S6123444Y2
Authority
JP
Japan
Prior art keywords
row
unit
slip
rigid
shaped rigid
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
JP16087881U
Other languages
Japanese (ja)
Other versions
JPS5864502U (en
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
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Priority to JP16087881U priority Critical patent/JPS5864502U/en
Publication of JPS5864502U publication Critical patent/JPS5864502U/en
Application granted granted Critical
Publication of JPS6123444Y2 publication Critical patent/JPS6123444Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 この考案は、冷凍室内の氷結床面または滑性床
面上等を走行するフオークリフト用の耐スリツプ
性ソリツドタイヤの改良に関するもので、特に、
氷結床面および滑性床面において耐スリツプ性と
振動を発生しない円滑な操縦性、走行性を有し、
高荷重の支持性とよりすぐれた適性な弾性を保持
しながら良好な耐スリツプ性が得られ、きわめて
すぐれた耐摩耗性で、特に波打ち摩耗等の偏摩耗
を生起することなく、トレツドがほとんど摩耗す
るまで、良好な性能が保持出来るソリツドタイヤ
を目差したものである。 考案者らは、前出願特許において、従来の金網
の巻付け構造の耐スリツプ性ソリツドタイヤの改
良を行ない、すなわち、「タイヤのベースバンド
の外径上にU字形金網を、開口部をトレツドの外
側面に向け、軸線方向に配置して、ウレタンゴム
にて埋設した耐スリツプ性ウレタンタイヤ」を開
発したものである。このような構造を有するた
め、重点特性として、「相当な弾性を保持しなが
ら、きわめて大きな耐スリツプ性を発揮し、ほと
んど摩耗し尽くすまで長期に耐スリツプ性を維持
する」特徴を有するものであつた。 この前出願の耐スリツプ性ウレタンタイヤは、
第1重点目標を耐スリツプ性に置いて構成された
ものであるが、この考案は、頭書の目的に記載の
とおり、耐スリツプ性と振動を発生しない安定し
た円滑な操縦性、走行性とよりすぐれた適性な弾
性を有すると共に、通常の床面、路面においても
良好な乗り心地と走行性を有し、きわめてすぐれ
た耐摩耗性であつて、特にトレツドの波打ち摩
耗、偏摩耗を生起しない、長期に良好な性能を保
持するソリツドタイヤを目差したもので、考案者
らは、この目的に適合する構成を探究したもので
ある。 この考案の耐スリツプ性ソリツドタイヤは、主
として、滑性面において、荷重の掛かるフオーク
リフトに使用されるものであり、弾性材料として
は、高い硬度においても、通常のジエン系の軟質
ゴムに匹敵する破断伸びを有する靭性指数の大な
るポリマーで、特に耐摩耗性並びに耐冷性を有す
る素質材料が好ましい。 また、滑り止め材料とその構成については、剛
性が大きく、しかも、弾性材料と遊離する事なく
一体的に作動するものであつて、できるだけ不同
性の局部変形を与えないような構成が必要であ
る。従つて、遊離性を防止する点からは、網目の
ある剛性材が適材で、金属質、有機質剛性材〔ポ
リアミド系(ケブラー)〕等からなる金網または
同効程度の剛性網が好適である。また、一体的に
作動する点からは、高硬度で靭性指数の大なるゴ
ム状物質が適材であり、現時点ではウレタンゴム
が好適である。また、不同性の局部変形を与えな
いような、すなわち、振動を発生しない安定した
円滑な操縦性、走行性が得られる構成としては、
低破断伸長で実質的に非伸長性と見なしうる金網
または同効の剛性網を、ソリツドタイヤの円周方
向に配列する事である。また、この剛性網が安定
的に埋設されるためには、平板状に埋設されるよ
りも連結状に埋設されるU字形の剛性網を形成す
ることが好適である。 すなわち、U字形の単位長の剛性網を複数個を
トレツドの円周方向に一列に配列した単列層を、
複数列相互にずらして、単位長の剛性網の配列間
隔(透き間)が、他の配列間隔と一致しないよう
に複数列円周方向に配列する事が好ましい。 すなわち、硬度の高い靭性指数の大なるゴム状
物質を、実質的に非伸長性の単位U字形剛性網に
て挾持して円周方向に複数列配設する構成によつ
て、剛性網にてゴム状物質の不同変形が抑制され
且つ全円周の範囲において均等な変形が行なわ
れ、また、剛性網の先端が、タイヤの回転方向に
配列されているので、回転時にゴム状物質に回転
を阻止する局部的応力の作用する誘因がなく、円
滑な走行性が得られる。因つて、ゴム状物質に対
して、円周方向に均等な応力が作用し、トレツド
の波打ち摩耗等の偏摩耗が防止される。 また、ゴム状物質が実質的に非伸長性の剛性網
にて、各列共挾持されているので、トレツドの円
周方向の周長の変動もほとんでなく、極く少量に
抑制されるため、摩耗の促進要因がなく、きわめ
て高い耐摩耗性にすぐれた特性を発揮するもので
ある。 次に、例示の実施例に基づいて、この考案の態
様を説明する。 第1図は、この考案の一例を示す縦断面の部分
断面図で、第2図は、単位U字形剛性網の円周方
向の配列の一例を示す平面図で、この平面図は、
図面を省略して、同一図面に2種類の単位U字形
剛性網の配列を左右に分けて図示したもので、左
側は単位U字形剛性網の両側面が湾曲平行四辺形
タイプ(略号PG)、右側は両側面が扇形タイプ
(略号TZ)のものである。 第3図は、第2図の配列を多数重ね合わせる構
成を斜視図に示したものである。 図において、Tはトレツド、1はソリツドタイ
ヤの車輪のベースバンド、2はウレタンゴム、
は金網または同効の単位U字形剛性網であり、こ
の剛性網において、3aは開口部、3bは側面、
3cは底面である。 この所要の単位長の単位U字形剛性網を、第
2図の剛性網の配列図に示すように、単位U字形
剛性網を、車輪のベースバンド1上に、U字形
の開口部3aを外側に向け、この複数個を、円周
方向に一列に配列した単列層(略号SAL)を形
成し、第3図の複数列図に示すように、トレツド
の幅に応じて、トレツド幅全面に単列層SALを
並列して複数列(略号PLA)を配置し、この複
数列PLAを、ウレタンゴムを注入して埋設硬化
する事によつてウレタンゴムにて埋設した耐スリ
ツプ性ソリツドタイヤを構成するものである。 単位U字形剛性網は、主として金網が使用さ
れるが、用途によつては、有機質材料で、フイラ
メントの特性がほぼ金属に近似の低伸長の剛性体
であれば使用可能である。この形状は、単位U字
形剛性網の両側面3bが湾曲平行四辺形タイ
プ、または、扇形タイプ等、用途に応じて適当な
形状が選定される。 なお、単列層SALを複数列PLAに形成する場
合は、単列層SALの各単位U字形剛性網間の
透き間4が、並列する各単列層間において連続し
ないように、透き間4を、次の単列層SALの単
位U字形剛性網の側面3bにてふたをするよう
に構成する事によつて均一性が保持されるように
構成することが好ましい。必要に応じて、有機質
の剛性網の板状体を金網のU字形剛性網に添接使
用することも出来る。 以上、説明のとおり、この考案は、単位U字形
剛性網の複数個にて一列に円周方向に配置した単
列層の並列により複数列が回転方向に形成されて
いるため、回転を妨げる事なく、振動を発生しな
い円滑な走行性を有すると共に、各単列層が複数
個の単位U字形剛性網に分割されているため、よ
りすぐれた適性な弾性を有し、スリツプ防止タイ
ヤの良好な乗心地が保持される。また、ゴム状物
質が剛性網にて挾持して円周方向に並列されてい
るため、荷重走行時において、ゴム状物質の円周
長の変化がほとんどないため、摩耗性が抑制さ
れ、きわめて耐摩耗性が得られると共に、また、
回転時には、ゴム状物質に、全周面において、円
滑な回転による均等な応力が作用するため波打ち
摩耗等の偏摩耗を生起することがない。 また、剛性網の先端が円周方向に数個の複数列
が形成されているため、円滑な回転と良好な耐ス
リツプ性が得られる。 また、ソリツドタイヤの軸線方向には、スリツ
プ防止の構成がないため、ゴム状物質に局部的変
形を与えることもなく、振動の生起誘因もなく、
円滑な走行性を有し、滑り面以外の床面において
も同様に使用されうるものであり、また、トレツ
ドの肉厚がほとんど摩耗するまで、良好な性能を
保持しながら長期に使用出来るものである。さら
に、硬度の高い靭性指数の大なるゴム状物質を使
用しているため、高荷重の支持性と剛性網との良
好な一体的作動が得られるものである。
[Detailed Description of the Invention] This invention relates to an improvement in slip-resistant solid tires for forklifts that run on icy or slippery floors in freezer compartments, and in particular,
It has slip resistance on icy and slippery floors and has smooth maneuverability and running performance without vibration.
The aim of this invention is to provide a solid tire that has good slip resistance while maintaining high load support and excellent elasticity, has extremely good abrasion resistance, and can maintain good performance until the tread is almost completely worn out, without causing uneven wear such as wavy wear. In the previous patent application, the inventors improved on the conventional slip-resistant solid tire with a wire mesh wrapping structure, that is, developed a "slip-resistant urethane tire in which a U-shaped wire mesh is placed on the outer diameter of the tire base band, with the opening facing the outer surface of the tread, in the axial direction, and embedded in urethane rubber." Because of this structure, the key characteristic is that the tire "has extremely high slip resistance while maintaining a considerable elasticity, and maintains slip resistance for a long period of time until it is almost completely worn out." The slip-resistant urethane tire of the previous patent application is,
The first priority of this tire is slip resistance, and as stated in the purpose of the preamble, this tire is designed to have slip resistance, stable and smooth steering and running without vibration, excellent elasticity, and good ride comfort and running performance on normal floors and roads, and has excellent wear resistance, especially does not cause wavy wear or uneven wear of the tread, and maintains good performance for a long time. The inventors have searched for a structure that meets this purpose. The slip-resistant solid tire of this tire is mainly used on forklifts that are subjected to loads on slippery surfaces, and the elastic material is preferably a polymer with a high toughness index that has a breaking elongation comparable to that of normal diene-based soft rubber even at high hardness, and a quality material that is particularly wear-resistant and cold-resistant. The anti-slip material and its structure must have high rigidity, and must work together with the elastic material without being separated from it, and must be structured to prevent uneven local deformation as much as possible. Therefore, from the viewpoint of preventing looseness, a rigid material with a mesh is suitable, and a wire mesh or a rigid net with an equivalent effect made of a metallic or organic rigid material (polyamide (Kevlar)) is preferable. Also, from the viewpoint of integral operation, a rubber-like material with high hardness and a large toughness index is suitable, and urethane rubber is currently the most suitable. Also, a structure that does not give uneven local deformation, that is, that provides stable and smooth handling and running without generating vibration, is as follows:
The method is to arrange wire mesh or equivalent rigid mesh, which has low elongation at break and can be regarded as substantially inextensible, in the circumferential direction of the solid tire. In order to stably embed the rigid mesh, it is preferable to form a U-shaped rigid mesh embedded in a connected manner rather than embedded in a flat plate shape. That is, a single row layer is formed by arranging multiple U-shaped unit length rigid meshes in a row in the circumferential direction of the tread.
It is preferable to arrange multiple rows in the circumferential direction so that the arrangement intervals (gaps) of the rigid nets of unit length are not the same as the other arrangement intervals. That is, by sandwiching a rubber-like material having high hardness and a large toughness index between substantially inextensible unit U-shaped rigid nets and arranging them in multiple rows in the circumferential direction, the rigid nets suppress uneven deformation of the rubber-like material and allow uniform deformation over the entire circumferential range, and since the ends of the rigid nets are arranged in the direction of tire rotation, there is no inducement for local stress to act on the rubber-like material that prevents rotation during rotation, and smooth running is obtained. As a result, uniform stress acts on the rubber-like material in the circumferential direction, preventing uneven wear such as wavy wear of the tread. In addition, since the rubber-like material is sandwiched between each row by a substantially inextensible rigid net, there is almost no variation in the circumferential length of the tread, and this variation is kept to a very small extent, so there is no factor promoting wear, and the device exhibits extremely high wear resistance. Next, the mode of this device will be explained based on the illustrated embodiment. Fig. 1 is a partial vertical cross-sectional view showing one example of this device, and Fig. 2 is a plan view showing one example of the circumferential arrangement of unit U-shaped rigid nets. This plan view shows,
The drawings are omitted, and two types of unit U-shaped rigid net arrangements are shown on the left and right in the same drawing. The left side of the unit U-shaped rigid net has both sides curved parallelogram type (abbreviated as PG), and the right side has both sides sector type (abbreviated as TZ). Figure 3 shows a perspective view of a configuration in which multiple arrangements of Figure 2 are overlapped. In the drawing, T is the tread, 1 is the base band of the wheel of a solid tire, 2 is urethane rubber, 3 is the
is a wire net or a unit U-shaped rigid net of the same effect, in which 3a is an opening, 3b is a side,
3c is the bottom surface. As shown in the rigid net arrangement diagram of Fig. 2, a plurality of unit U-shaped rigid nets 3 of the required unit length are arranged in a line in the circumferential direction on the base band 1 of the wheel with the U-shaped openings 3a facing outward to form a single row layer (abbreviated as SAL), and as shown in the multiple row diagram of Fig. 3, multiple rows (abbreviated as PLA) of single row layers SAL are arranged in parallel over the entire width of the tread according to the width of the tread, and this multiple row PLA is embedded in urethane rubber by injecting it and hardening it to form a slip-resistant solid tire. The unit U-shaped rigid net 3 is mainly made of wire netting, but depending on the application, any organic material with low elongation rigid body with filament properties similar to those of metal can be used. The shape of the rigid net unit 3 may be selected from a suitable shape depending on the application, such as a curved parallelogram type or a sector type on both sides 3b. When the single-row layer SAL is formed into a multi-row PLA, it is preferable to cover the gaps 4 between the unit U-shaped rigid nets 3 of the single-row layer SAL with the side 3b of the unit U-shaped rigid net 3 of the next single-row layer SAL so that the gaps 4 are not continuous between the parallel single-row layers, thereby maintaining uniformity. If necessary, a plate-shaped organic rigid net may be attached to the U-shaped rigid net of the wire mesh. As explained above, this invention has a plurality of single-row layers formed in parallel in a row of a plurality of U-shaped rigid net units in the direction of rotation, so that the rotation is not hindered and smooth running performance without vibration is achieved, and each single-row layer is divided into a plurality of U-shaped rigid net units, so that the tire has a better suitable elasticity and maintains a good ride comfort of the slip-resistant tire. In addition, since the rubber-like material is sandwiched between rigid nets and arranged in parallel in the circumferential direction, there is almost no change in the circumferential length of the rubber-like material during running under load, so wear is suppressed and excellent wear resistance is obtained.
During rotation, the rubber-like material is subjected to uniform stress due to smooth rotation over the entire circumferential surface, so uneven wear such as wavy wear does not occur. Also, since the ends of the rigid net are formed in several rows in the circumferential direction, smooth rotation and good slip resistance are obtained. Also, since there is no anti-slip structure in the axial direction of the solid tire, there is no local deformation of the rubber-like material, and there is no induction of vibration.
It has a smooth running property and can be used on floor surfaces other than slippery surfaces as well, and can be used for a long time while maintaining good performance until the thickness of the tread is almost worn away. Furthermore, since it uses a rubber-like material with high hardness and a large toughness index, it can support a high load and work well together with the rigid net.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、この考案の耐スリツプ性ソリツドタ
イヤの要部の部分縦断面図、第2図は、この考案
のソリツドタイヤのトレツド中に埋設される単位
U字形剛性網の単列層配列の一部を示す平面図、
第3図は、複数列の並列状態を示す部分斜視図で
ある。 T……トレツド、1……車輪のベースバンド、
2……ウレタンゴム、……単位U字形剛性網、
3a……開口部、3b……側面、4……透き間、
SAL……単列層、PLA……複数列。
Fig. 1 is a partial longitudinal cross-sectional view of the essential parts of the slip-resistant solid tire of this invention, and Fig. 2 is a part of a single layer arrangement of unit U-shaped rigid networks embedded in the tread of the solid tire of this invention. A plan view showing
FIG. 3 is a partial perspective view showing a plurality of rows in parallel. T...Treasured, 1...Wheel baseband,
2...Urethane rubber, 3 ...Unit U-shaped rigid net,
3a... opening, 3b... side, 4... gap,
SAL...single row layer, PLA...multiple rows.

Claims (1)

【実用新案登録請求の範囲】 (1) 車輪のベースバンドの外径上に、単位U字形
剛性網を、開口部を外側に向けて複数個を円周
方向に一列に配列して単列層を形成し、この単
列層を、トレツドの幅全面に並列して複数列を
配置して、ウレタンゴムにて埋設した耐スリツ
プ性ソリツドタイヤ。 (2) 単列層の各単位U字形剛性網の透き間が並列
する各単列層間において連続しないように、透
き間を、次の単列層の単位U字形剛性網の側面
にてふたをするように複数列を配置した実用新
案登録請求の範囲第1項記載の耐スリツプ性ソ
リツドタイヤ。
[Claims for Utility Model Registration] (1) A single-row layer of unit U-shaped rigid nets arranged in a row in the circumferential direction with the openings facing outward on the outer diameter of the baseband of the wheel. This is a slip-resistant solid tire in which multiple rows of these single row layers are arranged in parallel across the entire width of the tread and embedded with urethane rubber. (2) In order to prevent the gaps in each unit U-shaped rigid network of a single-row layer from being continuous between parallel single-row layers, the gaps are covered with the sides of the unit U-shaped rigid network of the next single-row layer. A slip-resistant solid tire according to claim 1 of the claimed utility model registration, wherein a plurality of rows are arranged.
JP16087881U 1981-10-27 1981-10-27 Slip resistant solid tire Granted JPS5864502U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16087881U JPS5864502U (en) 1981-10-27 1981-10-27 Slip resistant solid tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16087881U JPS5864502U (en) 1981-10-27 1981-10-27 Slip resistant solid tire

Publications (2)

Publication Number Publication Date
JPS5864502U JPS5864502U (en) 1983-04-30
JPS6123444Y2 true JPS6123444Y2 (en) 1986-07-14

Family

ID=29953266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16087881U Granted JPS5864502U (en) 1981-10-27 1981-10-27 Slip resistant solid tire

Country Status (1)

Country Link
JP (1) JPS5864502U (en)

Also Published As

Publication number Publication date
JPS5864502U (en) 1983-04-30

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