JPH0647155Y2 - Flat belt - Google Patents
Flat beltInfo
- Publication number
- JPH0647155Y2 JPH0647155Y2 JP5418389U JP5418389U JPH0647155Y2 JP H0647155 Y2 JPH0647155 Y2 JP H0647155Y2 JP 5418389 U JP5418389 U JP 5418389U JP 5418389 U JP5418389 U JP 5418389U JP H0647155 Y2 JPH0647155 Y2 JP H0647155Y2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- rubber layer
- deformation
- short fibers
- flat belt
- 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 - Lifetime
Links
Landscapes
- Belt Conveyors (AREA)
- Reinforced Plastic Materials (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、高負荷伝動用の平ベルトに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a flat belt for high load transmission.
（従来の技術） 従来、平ベルトは、ベルト基帯の外被全体もしくはプー
リ接触面に糊引きした帆布を張り合わせた構造又は心線
に単一ゴムを貼った構造で、軽負荷伝動用に用いられて
いる（例えば実公昭50-43634号公報参照）。(Prior Art) Conventionally, a flat belt has a structure in which glued canvas is attached to the entire outer cover of the belt base or the pulley contact surface, or a single rubber is attached to the core wire, and is used for light load transmission. (See, for example, Japanese Utility Model Publication No. 50-43634).
（考案が解決しようとする課題） そのため。そのような平ベルトを用いて高負荷伝動する
と、心線の引張力により、プーリに圧縮ゴム層が押し付
けられて変形し、スリップが発生する。(Issues to be solved by the invention) Therefore. When such a flat belt is used for high load transmission, the tensile force of the core wire pushes the compressed rubber layer against the pulley to deform it, causing slippage.
本考案はかかる点に鑑みてなされたもので、高負荷伝動
を可能とした平ベルトを提供することを目的とする。The present invention has been made in view of the above points, and an object thereof is to provide a flat belt capable of high-power transmission.
（課題を解決するための手段） 本考案は、エンドレスの心線が螺旋状に埋設された心線
層を有する平ベルトにおいて、下面側に高摩擦係数を有
する表面ゴム層を有し、上記心線層と表面ゴム層との間
に短繊維混合の高弾性ゴムからなる圧縮ゴム層が介設さ
れており、さらに圧縮ゴム層が、短繊維がベルト長手方
向に配列された短繊維混合ゴム層を有することを特徴と
するものである。(Means for Solving the Problems) The present invention is a flat belt having a core wire layer in which endless core wires are embedded in a spiral shape, and has a surface rubber layer having a high friction coefficient on the lower surface side. A compression rubber layer made of highly elastic rubber mixed with short fibers is interposed between the wire layer and the surface rubber layer, and the compression rubber layer is a short fiber mixed rubber layer in which short fibers are arranged in the belt longitudinal direction. It is characterized by having.
（作用） 圧縮ゴム層のベルト長手方向の変形が、短繊維がベルト
長手方向に配列された短繊維混合ゴム層によって抑制さ
れる。(Operation) The deformation of the compressed rubber layer in the belt longitudinal direction is suppressed by the short fiber mixed rubber layer in which the short fibers are arranged in the belt longitudinal direction.
（実施例） 以下、本考案の実施例を図面に沿って詳細に説明する。Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.
全体構成を示す第１図において、１は平ベルトで、接着
ゴム２内部に心線３が螺旋状に埋設されてなる心線層４
を有し、該心線層４の上側に上ゴム層６が積層され、下
側に、短繊維７がベルト長手方向に配列された高弾性ゴ
ムからなる圧縮ゴム層８（Ｅ＝1120×106dyn/cm2、摩擦
係数μ＝0.5）及び高摩擦係数の表面ゴム層９（Ｅ＝310
×106dyn/cm2、摩擦係数μ＝0.9）とが上側から順に積
層されてなる。In FIG. 1 showing the overall structure, 1 is a flat belt, and a cord layer 4 in which a cord 3 is embedded spirally inside an adhesive rubber 2
The upper rubber layer 6 is laminated on the upper side of the core wire layer 4, and the compressed rubber layer 8 (E = 1120 × 10 5) made of high elastic rubber on the lower side of which the short fibers 7 are arranged in the belt longitudinal direction. 6 dyn / cm 2 , friction coefficient μ = 0.5) and high friction coefficient surface rubber layer 9 (E = 310)
× 10 6 dyn / cm 2 and friction coefficient μ = 0.9) are laminated in order from the upper side.
ところで、一般に、繊維混合ゴムの変形は、その配合さ
れている繊維に加えられる力が圧縮力であるか引張力で
あるかによって決まる。すなざち、繊維の長さが繊維の
直径に比べて十分長い場合には、圧縮方向の力に対して
はマトリックスゴムの変形に対する拘束力がなく、繊維
は安易に座屈して変形し易い。一方、伸長方向の力に対
してはマトリックスゴムの変形に対する拘束力が高く変
形しにくい。By the way, in general, the deformation of the fiber-mixed rubber depends on whether the force applied to the compounded fiber is a compressive force or a tensile force. That is, when the length of the fiber is sufficiently longer than the diameter of the fiber, there is no restraining force against the deformation of the matrix rubber against the force in the compression direction, and the fiber is easily buckled and easily deformed. On the other hand, with respect to the force in the extension direction, the constraint force against the deformation of the matrix rubber is high and it is difficult to deform.
さらに詳述すれば、等分布荷重ＰがＺ軸方向に加わるモ
デルでは、マトリックスゴムの変形はＺ軸方向に圧縮変
形、Ｘ軸方向及びＹ軸方向に伸長変形が起こる。More specifically, in the model in which the uniformly distributed load P is applied in the Z-axis direction, the matrix rubber is deformed by compressive deformation in the Z-axis direction and extensional deformation in the X-axis direction and the Y-axis direction.
しかして、第２図（ａ）に示すように、繊維11がＺ軸方
向に配列されている円柱体12Aを考えると、繊維11には
主として圧縮力が作用することとなり、繊維11に座屈が
生じて、第２図（ｂ）（ｃ）に鎖線S1で示すように、円
柱体12AはＸ軸及びＹ軸方向に大きく変形することにな
る。Then, as shown in FIG. 2 (a), considering a cylindrical body 12A in which the fibers 11 are arranged in the Z-axis direction, a compressive force mainly acts on the fibers 11 and the fibers 11 buckle. Then, as shown by the chain line S 1 in FIGS. 2 (b) and 2 (c), the columnar body 12A is greatly deformed in the X-axis and Y-axis directions.
また，第３図（ａ）に示すように、繊維11がＹ軸方向に
配列されている円柱体12Bを考えると、第３図（ｂ）
（ｃ）に鎖線S2で示すように、Ｘ軸方向には大きく伸長
変形するが、繊維11によってＹ軸方向への伸長変形が拘
束されるため、結果としてＺ軸方向への圧縮変形も小さ
くなることになる。Further, as shown in FIG. 3 (a), considering a cylindrical body 12B in which fibers 11 are arranged in the Y-axis direction, FIG. 3 (b)
As shown by the chain line S 2 in (c), the fiber 11 is largely stretched and deformed in the X-axis direction, but the fiber 11 restrains the stretched deformation in the Y-axis direction. As a result, the compressive deformation in the Z-axis direction is also small. Will be.
さらに、第４図（ａ）に示すように、繊維11がＹ軸方向
に配列されている層12aと繊維11がＸ軸方向に配列され
ている層12bとが交互に積層されている円柱体12Cを考え
ると、Ｙ軸方向の変形が拘束されるだけでなく、Ｘ軸方
向の変形も拘束されるため、第４図（ｂ）（ｃ）に鎖線
S3で示すように、Ｚ軸方向への圧縮変形はさらに小さく
なる。Further, as shown in FIG. 4 (a), a columnar body in which layers 12a in which the fibers 11 are arranged in the Y-axis direction and layers 12b in which the fibers 11 are arranged in the X-axis direction are alternately laminated. Considering 12C, not only the deformation in the Y-axis direction is constrained, but also the deformation in the X-axis direction is constrained. Therefore, the chain line in FIGS.
As indicated by S 3 , the compressive deformation in the Z-axis direction becomes even smaller.
よって、繊維11の列理方向の変形はほとんど発生せず、
圧縮力に対する弾性率Ｅ及び剪断力に対する弾性率Ｇの
大きさは、第５図に示すようになる。Therefore, almost no deformation of the fibers 11 in the grain direction occurs,
The magnitudes of the elastic modulus E with respect to the compressive force and the elastic modulus G with respect to the shearing force are as shown in FIG.
そこで、平ベルトに適用した場合について考察する。Therefore, the case of application to a flat belt will be considered.
まず、ベルト上下方向に短繊維21を配列した平ベルト22
A（第６図（ａ）（ｂ）参照）について考えると、荷重
Ｐによるベルト上下方向の変形及び剪断力Ｆによるベル
ト長手方向の変形が共に大きく、鎖線S11に示すように
平ベルト22Aは、ベルト上下方向、ベルト幅方向及びベ
ルト長手方向に大きく変形する。First, a flat belt 22 in which short fibers 21 are arranged vertically in the belt.
A Considering (FIG. 6 (a) (b) refer), the belt longitudinal deformation both large due to deformation and shear force F of the belt vertical direction by the load P, the flat belt 22A as shown in chain line S 11 is , The belt is deformed in the vertical direction, the belt width direction, and the belt longitudinal direction.
ベルト幅方向に短繊維21を配列した平ベルト22B（第７
図（ａ）（ｂ）参照）を考えると、短繊維21によってベ
ルト幅方向の変形が抑制されるので、荷重Ｐによるベル
ト上下方向の変形は大きくないが、剪断力Ｆによるベル
ト長手方向の変形が大きく、したがって、鎖線S12に示
すようになる。Flat belt 22B having short fibers 21 arranged in the belt width direction (7th
Considering FIGS. (A) and (b)), since the deformation in the belt width direction is suppressed by the short fibers 21, the deformation in the belt vertical direction due to the load P is not large, but the deformation in the belt longitudinal direction due to the shearing force F. Is large, and therefore becomes as shown by the chain line S 12 .
また、ベルト長手方向に短繊維21を配列した平ベルト22
C（第８図（ａ）（ｂ）参照）を考えると、短繊維21に
よって剪断力Ｆによるベルト長手方向の変形が抑制され
るので、荷重Ｐによるベルト上下方向及びベルト幅方向
の変形も小さくなり、鎖線S13に示すようになる。In addition, a flat belt 22 in which short fibers 21 are arranged in the belt longitudinal direction
Considering C (see FIGS. 8 (a) and 8 (b)), since the short fibers 21 suppress the deformation in the belt longitudinal direction due to the shearing force F, the deformation in the belt vertical direction and the belt width direction due to the load P is also small. As shown by the chain line S 13 .
さらに、短繊維21をベルト長手方向に配列した層22aと
短繊維21をベルト幅方向に配列した双22bとを交互に積
層した平ベルト22D（第９図（ａ）（ｂ）参照）を考え
ると、短繊維21によってベルト幅方向及びベルト長手方
向の変形が抑制されるので、結果としてベルト上下方向
の変形も抑制され、鎖線S14に示すように変形は小さく
なる。Furthermore, consider a flat belt 22D (see FIGS. 9 (a) and 9 (b)) in which layers 22a in which short fibers 21 are arranged in the belt longitudinal direction and pairs 22b in which short fibers 21 are arranged in the belt width direction are alternately laminated. Then, since the short fibers 21 suppress the deformation in the belt width direction and the belt longitudinal direction, as a result, the deformation in the belt vertical direction is also suppressed, and the deformation becomes small as shown by the chain line S 14 .
してみると、荷重Ｐによる変形すなわち主としてベルト
上下方向及びベルト長手方向の変形は、平ベルト22Dが
最も少なく、平ベルト22B,22Cはそれより少し大きくな
り、平ベルト22Aはさらに大きくなる。一方、剪断力Ｆ
による変形すなわち主としてベルト長手方向の変形は、
平ベルト22Cが最も少なく、平ベルト22D,22B,22Aの順で
大きくなる。As a result, the flat belt 22D has the least deformation due to the load P, that is, the deformation in the belt vertical direction and the belt longitudinal direction, the flat belts 22B and 22C are slightly larger, and the flat belt 22A is even larger. On the other hand, shearing force F
The deformation due to, that is, the deformation mainly in the belt longitudinal direction,
The flat belt 22C is the smallest, and the flat belts 22D, 22B, 22A become larger in this order.
してみると、伝動能力は、22C＞22D＞22B＞22Aの順で小
さくなることがわかる。Then, it can be seen that the transmission capacity decreases in the order of 22C>22D>22B> 22A.
続いて、上記平ベルトに対して行った試験の結果につい
て説明する。Next, the result of the test performed on the flat belt will be described.
試験ベルト 試験は、第１図に示す本考案形平ベルト１と、圧縮
ゴム層の短繊維がベルト幅方向に配列された比較例の平
ベルト（Ｅ＝430×106dyn/cm2、摩擦係数μ＝0.5）とに
ついて行った。なお、上記ベルトは、ベルト幅25.4mm、
ベルト厚さ3.56mm、表面ゴム層の厚さ0.6mm、上面から
心線中心までの距離1.5mmである。Test belt The test was conducted using the flat belt 1 of the present invention shown in FIG. 1 and a flat belt of a comparative example in which short fibers of a compressed rubber layer were arranged in the belt width direction (E = 430 × 10 6 dyn / cm 2 , friction Coefficient μ = 0.5). The above belt has a belt width of 25.4 mm,
The belt thickness is 3.56 mm, the thickness of the surface rubber layer is 0.6 mm, and the distance from the top surface to the center of the core wire is 1.5 mm.
試験装置 第10図に示すように、駆動側プーリ31（直径100mm）
と、従動側プーリ32（直径100mm、2600rpm）とに試験ベ
ルト33を巻回し、従動側プーリ32を駆動側プーリ31から
離れる方向に付勢する荷重Ｗを変化させ、走行試験を行
った。Test device Drive side pulley 31 (diameter 100mm) as shown in Fig. 10.
Then, the test belt 33 was wound around the driven pulley 32 (diameter 100 mm, 2600 rpm), and the load W for urging the driven pulley 32 in the direction away from the drive pulley 31 was changed to perform a running test.
試験結果 第11図に示す通りである。したがって、荷重Ｗが200kgf
を越えるあたりから、本考案例と比較例との間に伝動能
力に大きな開きが生じ、高負荷伝動には本考案例の方が
優れていることが判る。Test results As shown in FIG. Therefore, the load W is 200kgf
From above, it can be seen that there is a large difference in the transmission capacity between the present invention example and the comparative example, and the present invention example is superior to high load transmission.
なお、摩擦係数の測定は、第12図に示すように、試験ベ
ルト41をプーリ42（直径60mm、回転数45rpm）に巻回
し、一端にロードセル43を連結する一方、他端に荷重DW
を加え、次の式に基づき摩擦係数μを求めた。The friction coefficient is measured by winding the test belt 41 around the pulley 42 (diameter 60 mm, rotation speed 45 rpm) and connecting the load cell 43 to one end and the load DW to the other end, as shown in FIG.
Was added and the friction coefficient μ was calculated based on the following equation.
μ＝［２×Ln（ロードセル荷重/DW）］／π 上記実施例では、圧縮ゴム層７全体を、短繊維７がベル
ト長手方向に配列された高弾性のゴム層としているが、
第13図に示す平ベルト51のように、圧縮ゴム層52を、短
繊維７がベルト長手方向に配列された層52aと、短繊維
７がベルト幅方向に配列された層52bとを積層して構成
するようにしてもよい。μ = [2 × Ln (load cell load / DW)] / π In the above embodiment, the entire compression rubber layer 7 is a highly elastic rubber layer in which the short fibers 7 are arranged in the belt longitudinal direction.
As in the flat belt 51 shown in FIG. 13, a compression rubber layer 52 is formed by laminating a layer 52a in which short fibers 7 are arranged in the belt longitudinal direction and a layer 52b in which short fibers 7 are arranged in the belt width direction. You may make it comprised.
（考案の効果） 本考案は、上記のように構成したから、圧縮ゴム層のベ
ルト長手方向の変形が抑制され、高負荷伝動が可能とな
る。(Effect of the Invention) Since the present invention is configured as described above, deformation of the compressed rubber layer in the belt longitudinal direction is suppressed, and high load transmission is possible.
図面は本考案の実施例を示し、第１図は平ベルトの断面
図、第２図（ａ）〜（ｃ）、第３図（ａ）〜（ｃ）及び
第４図（ａ）〜（ｃ）は短繊維混合の円柱体の変形の説
明図、第５図は円柱体の弾性率を比較して示す図、第６
図（ａ）（ｂ）、第７図（ａ）（ｂ）、第８図（ａ）
（ｂ）及び第９図（ａ）（ｂ）は短繊維混合ゴムをベル
トに適用した場合の変形の説明図、第10図は伝動能力の
試験装置の説明図、第11図は試験結果を示す図、第12図
は摩擦係数測定の測定装置の説明図、第13図は変形例の
断面図である。 1.51……平ベルト ４……心線層 ７……短繊維 8,52……圧縮ゴム層 ９……表面ゴム層The drawings show an embodiment of the present invention. FIG. 1 is a sectional view of a flat belt, FIGS. 2 (a) to (c), 3 (a) to (c) and 4 (a) to ( c) is an explanatory view of the deformation of a short fiber-mixed cylindrical body, FIG. 5 is a view showing the elastic moduli of the cylindrical bodies in comparison, and FIG.
Figures (a) and (b), Figures 7 (a) and (b), and Figure 8 (a)
(B) and FIGS. 9 (a) and (b) are explanatory views of deformation when short fiber mixed rubber is applied to a belt, FIG. 10 is an explanatory view of a transmission capacity test device, and FIG. 11 is a test result. FIG. 12 is an explanatory view of a measuring device for measuring a friction coefficient, and FIG. 13 is a sectional view of a modified example. 1.51 flat belt 4 core layer 7 short fibers 8,52 compressed rubber layer 9 surface rubber layer
Claims (1)
線層を有する平ベルトにおいて、下面側に高摩擦係数を
有する表面ゴム層を有し、上記心線層と表面ゴム層との
間に短繊維混合の高弾性ゴムからなる圧縮ゴム層が介設
されており、さらに圧縮ゴム層が、短繊維がベルト長手
方向に配列された短繊維混合ゴム層を有することを特徴
とする平ベルト。1. A flat belt having a core wire layer in which endless core wires are embedded in a spiral shape, and a surface rubber layer having a high coefficient of friction is provided on a lower surface side of the core belt and the surface rubber layer. A compressed rubber layer made of highly elastic rubber mixed with short fibers is interposed therebetween, and the compressed rubber layer further has a short fiber mixed rubber layer in which short fibers are arranged in the belt longitudinal direction. belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5418389U JPH0647155Y2 (en) | 1989-05-10 | 1989-05-10 | Flat belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5418389U JPH0647155Y2 (en) | 1989-05-10 | 1989-05-10 | Flat belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02143544U JPH02143544U (en) | 1990-12-05 |
| JPH0647155Y2 true JPH0647155Y2 (en) | 1994-11-30 |
Family
ID=31576021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5418389U Expired - Lifetime JPH0647155Y2 (en) | 1989-05-10 | 1989-05-10 | Flat belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647155Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109533A1 (en) * | 2009-03-26 | 2010-09-30 | バンドー化学株式会社 | Flat belt |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4693154B2 (en) * | 2005-05-16 | 2011-06-01 | バンドー化学株式会社 | Transmission flat belt |
-
1989
- 1989-05-10 JP JP5418389U patent/JPH0647155Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109533A1 (en) * | 2009-03-26 | 2010-09-30 | バンドー化学株式会社 | Flat belt |
| CN102362095A (en) * | 2009-03-26 | 2012-02-22 | 阪东化学株式会社 | Flat belt |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02143544U (en) | 1990-12-05 |
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