1.保送帶底層容易起皺,招致保送帶容易呈現(xiàn)分層脫膠等現(xiàn)象.
1. The bottom of the belts is easy to wrinkle, which leads to delamination and degumming of the belts.
由于橡膠保送帶彎曲起皺,底層的橡膠與骨架資料之間由于緊縮變形,剪切應(yīng)力大幅度進(jìn)步,形成橡膠與骨架資料的粘合界面遭到毀壞,與之間就會(huì)長(zhǎng)期遭到一個(gè)別離力的作用,后招致分層脫膠.由于保送帶底層起皺,保送帶與滾筒之間的接觸不再是棉的接觸,而是線接觸,動(dòng)力傳動(dòng)收到極大地影響,容易打滑;這種線接觸也形成了保送帶空中的橡膠在滾筒的作用下,橡膠被"咬掉".
Due to the wrinkling of rubber belts, the bonding interface between rubber and skeleton data is destroyed due to the contraction deformation and the great improvement of shear stress. The bonding interface between rubber and skeleton data will be destroyed for a long time, and the separation force between rubber and skeleton data will be exerted on the top layer. Finally, delamination degumming will occur. Because of the wrinkling of the bottom layer of rubber belts, the contact between rubber belts and drums is no longer the contact of cotton, but the line. Contact, power transmission receives a great impact, easy to slip; this line contact also forms the rubber in the air of the delivery belt under the action of the drum, the rubber is "bitten off".
2.耐勞性能降低.
2. Lower workability.
骨架資料在緊縮拉伸的交替應(yīng)力作用于僅有大小變化拉伸應(yīng)力作用相比擬,即便變化幅度相等,前者的耐疲倦性能會(huì)顯著降落.
The effect of alternating stress on the fatigue resistance of skeleton data is similar to that of tension stress with only large or small variation. Even if the range of variation is equal, the fatigue resistance of skeleton data decreases significantly.
3.招致保送帶的抗沖擊性能降低.
3. The impact resistance of the belts decreases.
保送帶的抗沖擊性能的上下,與帆布的構(gòu)造有嚴(yán)密的關(guān)系.
The impact resistance of the belts is closely related to the construction of canvas.
普通帆布的經(jīng)向彎曲度降低,常常意味著帆布的緯向彎曲度的進(jìn)步.我們能夠剖析一下目前帆布的經(jīng)紗和緯紗的彎曲度,就能夠曉得,緯紗處于十分松弛的狀態(tài).假如緯紗處于彎曲狀態(tài),當(dāng)資料沖擊帆布時(shí),沖擊力主要由處于慌張狀態(tài)的經(jīng)紗受力,而緯紗僅僅將卷曲局部伸長(zhǎng)而已,根本不受力,也就不會(huì)拉動(dòng)沖擊點(diǎn)外的經(jīng)紗一同受力,顯然耐沖擊性能就差.假如緯紗處于慌張狀態(tài),而經(jīng)紗處于松弛狀態(tài),沖擊力作用下,緯紗受力,抵御變形,從而迫使相鄰的經(jīng)紗變形,逐漸抗沖擊力向外傳送,這與蹦床的橫豎方向均須將彈簧固定,才會(huì)有足夠的彈性道理一樣.所以我們必需要加強(qiáng)保送帶帆布的卷曲度,才干進(jìn)步保送帶的拉伸強(qiáng)度.
The decrease of warp and weft curvature of canvas often means the improvement of weft curvature of canvas.If we can analyze the warp and weft curvature of canvas at present, we can know that the weft yarn is in a very relaxed state.If the weft yarn is in a bending state, when the data impact canvas, the impact force is mainly exerted by the warp in a panic state, while the weft yarn only extends the part of the curvature. If the weft yarn is in a state of panic and the warp is in a state of relaxation, under the impact force, the weft yarn is forced to resist deformation, thus forcing the adjacent warp to deform and gradually to resist the impact force to transmit outward, which must be fixed with the spring in both the horizontal and vertical directions of the trampoline, in order to have sufficient elastic track. It's the same. So we need to strengthen the curl of the delivery belt canvas to improve the tensile strength of the delivery belt.
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