(11) Calculation of conveyor belt and its main parameters
A Type of conveyor belt Belt conveyors are equipped with rubber belts, plastic belts, etc. The conveyor belt consists of a core and a cover layer. The belt core of the conveyor belt mainly bears the tension generated during the transportation of materials and adapts to the impact and bending during the operation. The core material can be divided into two categories: canvas and wire rope. The material of the woven canvas is cotton, vinylon, nylon, polyester, polyester, etc.; the wire rope is generally made of high-grade carbon steel wire. The covering layer of the conveyor belt functions as a core of the protective tape. In addition to the main characteristics of the core, it should also have heat resistance; cold resistance; oil resistance; acid resistance; alkali resistance; non-toxic; In order to increase the friction coefficient of the belt surface, it is also possible to form a pattern conveyor belt with a patterned belt surface.
B. Strength and number of layers of the conveyor belt a Calculation of the strong T s and the number of canvas layers Z c for the canvas core conveyor belt
d Determination of canvas layer of canvas core conveyor belt Z≥Z c (52)
Z≥Z min (53)
Z ≤ Z max (54) [next]
C Conveyor belt joint a Canvas core conveyor joint form and joint length
There are two types of canvas core conveyor joints, one is the flat connection method (Fig. 2a); the other is the overlap method (Fig. 2b). The joint length L j is calculated as:
(1) Flat method:
L i =l s (n-1)+Btg22°30' (55)
(2) Stacking method:
L j =l s n+Btg22°30' (56)
b Joint form and length of joints of steel cord conveyor belts There are generally four types of joints for steel cord conveyor belts, namely, first-order method, second-order method, five special methods and six special methods. The length of the joint and the length of the step l s are shown in Figure 3.
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