Design And Research Of Banded Wedge And Synchronous V Belt For Beam Pumping Unit

Beam pumping unit is still one of the main types of production equipment in oil field today.Its transmission device commonly uses the belt drive. Given the existence of skidding, elastic slidding and losing rotation in belt driving system,especially when the rain or snow weather comes,it appears the phenomenon of instability, invalidation, accelerating the wear and tear and shorten the life of belt. Even forced to stopping because of belt burn.This paper redesignes the belt and belt pulley for beam pumping unit, finishing the transform design of non-slip.The banded wedge and synchronous V belt eliminates the problem of skidding and losing rotation,greatly reduces the sliding rate.Threrfore,it improves the efficiency of belt drives, greatly increases the life of belt, reduces the labor intensity of the workers, improves the efficiency of oil production and saves the electric energy.This paper starts whith working principle of belt drive,by analysizing and researching friction mechanism of friction belt drive and meshing mechanism of meshing belt drive.It describes the process of elastic slip occurs and deeply analysizes the working principle of synchronous belt drive,making great progress in analysizing theory of belt drive.As a basis,the paper researches the working principle of banded wedge and synchronous V belt drive.This playes a guiding role in follow-up designing work. Through the theoretical analysis, it indacates that the friction drive and the meshing drive can exist in one form of a belt drive.They can work together with no interference from each other.All the analysis proves that the redesign of non-slip work for belt driving system is reasonable.The design combines friction drive with meshing drive and proposes three reform programs for the belt belt pulley.It evaluates the the advantages and disadvantages of each program and confirm a program at last.According with the confirmed program, we finish the structural design of belt and belt pulley and choose parameters of the tooth profile for belt.Next, it sets up the three-dimensional geometric model and finishes finite element analysis of stress and strain. The analysis showes toothed deformation and stress distribution under the load conditions,which is align with the theoretical analysis.Besides,it can guide to design the parameters of the tooth profile.We test transmission characteristics and sliding rate on a Belt Drive Bench. Experimental results show that friction drive and meshing drive can transfer movement and momentum at the same time.We also complete the transmission characteristics experiment of banded wedge V belt. Through analysis and comparison of experimental results,it showes the superiority of the redesigned belt and eliminates the problem of skidding and losing rotation.This kind of belt drive has a lot of advantages,such as:lowe slip rate,high transmission efficiency, reasonably and uniformly loaded, not sensitive to the center distance and long using life.At last, wo also complete field application experiment. The experimental data shows good results that the belt has gained.The banded wedge and synchronous V belt has greatly improved the efficiency of oil production.