Belt conveyor coupling reform practice

Belt conveyor 2018 - coupling reform practice 08 - 08 Pan Yuguo jian-tao liu abstract: belt conveyor running process, the coupling of flexible set of easy to wear and short service life, if not timely replacement, will cause the abandonment of coupling. Change must stop when the elastic sleeve, this will affect the whole crushing production line, and the normal production of cement production line, does not favor the authors efficiency. To reduce downtime to improve efficiency, this paper transforms column elastic sleeve pin coupling for nylon column pin coupling, and from the perspective of theoretical calculation, pointed out the coupling process matters needing attention. Through transforming, reduce the workload of workers, reduce the power consumption and production cost, reduced downtime maintenance time, the broken line and cement production line of continuous, stable and full capacity operation played a bigger role, won the big benefit coupling little modification. Key words: belt conveyor; Coupling; Reforming practice of shandong ruby building material co. , LTD. , old mining 2 # crushing production line, nissan norm 2200 t/d, the line of belt machine 10, 1 #, 2 #, 9 #, 10 # belt conveyor - for the motor Reducer drive structure, column coupling adopt elastic sleeve pin coupling. After crushing limestone finally by 10 # belt conveyor to the cement production line. 1 the problems in the process of the belt conveyor running, coupling of flexible set of easy to wear and tear, life is short, damage way to burn out, and tear out, etc. Damage, elastic sleeve pin direct contact with the pin set of holes, could not be passed, buffer damping torque, coupling noise increased obviously at work, and pin and pin hole caused by abnormal wear, if you don't change in time also can cause coupling of scrap. Change must stop when the elastic sleeve, this will affect the whole crushing production line, and the normal production of cement production line, does not favor the authors efficiency. In order to reduce downtime to improve efficiency, and decided to modify coupling. Coupling modification 2. 1 check coupling theoretical calculation manual that nylon column pin coupling transmission torque capacity is very big, structure is more simple, convenient installation, maintenance, good durability, have some cushion and vibration absorbing ability, and long service life, suitable for belt conveyor. Through the theoretical calculation of design under the coupling, as a case study of 1 # belt conveyor is analyzed. 1 # belt conveyor transmission device of related parameters are as follows: models Y280S - motor 6, the power to 45 kw, the speed of 980 r/min, the motor shaft extension 75 mm diameter, deceleration maxhine ZQ750 - 25 - 2. Coupling column for the elastic sleeve pin coupling, is a kind of old-fashioned non-standard coupling, about two and a half, the same coupling 220 mm circular uniform eight holes, four pin shaft hole, pin hole, pin shaft hole and pin hole staggered arrangement. （ 1) The nominal torque T = 9550 * 45/980 = 438. 52N. m。 （ 2) Calculate the torque Tca = kAT = 1. 5 * 438. 52 = 657. 78 n。 m。 Type, the coefficient of kA for the performance of the equipment, take kA = 1. 5. Refer to know the coupling design manual, can choose HL6 type coupling, the allowable torque of 3150 n. M, the allowable maximum speed of 2800 r/min, the axle hole diameter range of 60 ~ 85 mm, so the share. Design of the coupling is more greatly than theory to calculate the coupling. With the original coupling as the reference, the new pin coupling nylon column diameter is 320 mm, 240 mm in diameter on the circumference of a circle of uniform 8 pin hole, pin hole diameter of 40 mm, as shown in figure 1, figure 2. Fall off, in order to prevent the dowel pin processing two thickness 4 mm damper, and on the outside of the two and a half coupling with screws, baffle is shown in figure 3. 2. Nylon column 2 note if the pin is installed in the biased pin hole, not at the same time stress at work, dowel pin will generate eccentric wear, thereby reducing diameter, intensity is abate, after the break, nylon dowel pin to continue working on the rest of the dowel pin and then broken, so repeatedly, will break all the dowel pin. Therefore, coupling design drawing to label the shape tolerance of the pin hole, the other two and a half coupling together with pin holes, so that the pin hole deviation is minimum. Coupling effects of 3 upgrade since reform, has been running continuously for more than two years. Practice proves that the coupling reform success. Successful transformation of the coupling, reduce the workers work at the same time, reduces the power consumption and production cost, reduced downtime maintenance time, the broken line and cement production line of continuous, stable and full capacity operation played a bigger role, won the big benefit coupling little modification. 4 conclusion nylon column pin coupling long service life, reliable operation, stable and low noise, compared with the column elastic sleeve pin coupling, has obvious advantages. Coupling transformation is the key to through theoretical calculation, it is concluded that the theory of torque, combined with the actual situation of the equipment, design the size of the coupling parameter. It is important to note that the coupling on the design drawings to label the shape tolerance of the pin hole, drilling method with best used when processing, to reduce the size error, ensure the use effect.