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    首頁:公司動態 >> 托輥的加工工藝及選擇注意事項
    (1)托輥載荷的計算 (1) calculation of the load of the roller 托輥載荷可分為靜載荷和動載荷,工程設計中一般使用靜力學和動力學兩種計算方法。傳統的設計中比較注重靜特性計算,隨著皮帶輸送機動力學分析的發展,工程技術人員在托輥設計的過程中也越來越注重動特性方面的考慮。 Roller load can be divided into static load and dynamic load. In engineering design, two methods of statics and dynamics are usually used. The traditional design pays more attention to the static characteristic calculation. With the development of the dynamic analysis of the belt conveyer, the engineers and technicians pay more attention to the consideration of the dynamic characteristics in the process of the design of the roller. 托輥的靜載荷計算主要考慮傳送物料和輸送帶自重對托輥產生的正向壓力,在皮帶彎曲段還應考慮輸送帶張力的作用,特別是在凹凸弧段。槽型托輥受力分析主要是載荷在3個托輥上的分配問題,尤其是在凸弧段,目前多數計算都把中 The calculation of the static load of the roller mainly takes into account the positive pressure produced by the conveying material and the self weight of the conveyor belt. In the belt bending section, the effect of the tension of the conveyer belt should be considered, especially in the concave and convex arcs. The force analysis of groove idler is mainly the problem of load distribution on 3 idlers, especially in convex segments. 間托輥看作是受力最大的,按物料重的70%和輸送帶重的40%計算,但是側托輥受載后2個軸承的受力不等,同時還有比較大的軸向力。 The inter roller is regarded as the maximum force, which is calculated by 70% of the weight of the material and 40% of the weight of the conveyor belt, but the force of the 2 bearings is unequal after the side roller is loaded, and there is a larger axial force at the same time. 托輥的動載荷是托輥實際選型中必須加以考慮的。托輥動載荷是由多方面的因素產生的,主要有: The dynamic load of idlers must be considered in the actual selection of idlers. The dynamic load of idlers is caused by many factors. ①托輥輥殼偏心轉動時產生的動載荷; (1) the dynamic load generated by the eccentric roll of the roller housing. ②托輥偏心轉動與輸送帶相互作用而產生的動載荷; (2) the dynamic load generated by the interaction between idler and the conveyor belt. ③輸送帶及物料運動時對托輥沖擊產生的動載荷; (3) the dynamic load generated by the impact of the conveyor belt and the material during movement. ④輸送帶橫向彎曲振動拍打托輥產生的動載荷; (4) the dynamic load caused by the transverse bending vibration of the conveyor belt. ⑤輸送帶張力變化對過渡段托輥、彎曲段托輥產生的動載荷; (5) the dynamic load caused by the tension change of the conveyor belt to the idler and bending section of the transition section. ⑥高速運行的輸送帶通過托輥時物料和輸送帶變形對側托輥產生作用力,特別是物料中含有大塊時其沖擊力最大,目前這方面的研究還很少; (6) the high speed conveyer belt produces the force of the side roller through the deformation of the material and conveyor belt through the roller, especially when there is a large mass in the material, and the impact force is the most, so the research in this respect is very few at present. ⑦轉載處托輥受物料下落的沖擊動載 荷。正確地計算這些載荷對于選擇托輥、估算托輥 的使用壽命是非常重要的。 The dynamic load of the roller at the retransmission place is affected by the falling of the material. Correctly calculating these loads is very important for selecting idlers and estimating the service life of idlers. (2)托輥的加工工藝 (2) the processing technology of the roller 托輥的加工精度主要指外殼及托輥兩端內孔的同心度以及各零件軸向尺寸的加工精度。若同心度太差,會造成滾動軸承咬死、增加阻力,降低使用壽命;若零件的軸 向尺寸誤差太大,會形成較大的軸向間隙,導致軸向竄動,破壞潤滑和密封;若安裝質量不好,將發生跑偏、咬卡、加劇磨損等,大大降低托輥使用壽命。 The machining accuracy of idlers refers to the concentricity of the inner holes at the two ends of the shell and the idler and the machining accuracy of the axial dimensions of the parts. If the concentricity is too poor, it will cause the rolling bearing to bite, increase the resistance and reduce the service life. If the axial size error of the part is too large, it will form a larger axial gap, which causes the axial movement to destroy the lubrication and seal. If the installation quality is not good, it will run off, bite the card, aggravate the wear and so on, greatly reducing the use of the roller. Life。
    [來源:原創] [作者:aowl] [日期:18-05-24] [熱度:]
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