Flat belt drive in the machine shop at the hagley museum. There are various kind of belt drives available in the market such as flat belt, vbelt, rope drive, and timing belt. The arc of contact between the belt and the smaller drive over belt or rope pulley. Power transmission the following are the major types of power transmission. Ppt belt drives and chain drives powerpoint presentation. Mechanics and sliding friction in belt drives with pulley grooves. Belts, ropes and chains free download as powerpoint presentation. This type of drive is used when the power is to be transmitted from one shaft to other which is at a distance. A drawback to belt drives is that they transmit less power than gears or chain. Impactacademyofficial free engineering video lectures. The rollers are free to rotate on the bush which protect the sprocket wheel teeth. Belt and chain drives flexible drive elements shigleys mechanical engineering design.
Before there were pulleys that could rotate on a shaft, a rope was. As the freeend of the band is pulled, the friction between the band. Since chain drives are positive drives there is no slip, hence the velocity ratio will remain constant chain drives are suitable for small centre distances and can be used generally up to 3 meters but in special. Design of belts, ropes and chains u8 pdf free download. Mechanical elements like friction disc, various type of belts, rope, chain, gears, couplings. Pdf mechanics and sliding friction in belt drives with. Method of connecting two rotating shafts or pulleys. A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most. A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most often parallel. The power is transmitted from one shaft to the another shaft by a belt, chain and. It is power point presentation on belt and chain drive. Pdf in its simplest form a drive of this type consists of an endless belt. Gears can operate at higher speeds and transmit more power than chains or belts.
Belt and chain drives august 15, 2007 2 august 15, 2007 3 objectives understand principles of operation of flexibledrive systems. Introduction the belt or ropes are used to transmit power from one shaft to another by means of. Belt and chain drives objectives introduction introduction. Free body of infinitesimal element of flat belt shigleys mechanical engineering design. Belts or ropes are used to transmit power from one shaft to another by means of pulleys which rotate at the same speed or at different speeds. Belts, ropes and chain drives introduction theory of. A pulle y reduces these effects with rolling contact between the cable and the machine, but it must be of sufficient size, typi. Chains operate on a similar kinematic principle, and the use of high strength steel. Belt rope and chain drive theory of machinetom gate part. The martials used for belts and ropes must be strong, flexible, and. Determine allowable forces and torques for flexibledrive systems, along with the necessary sprockets or sheaves.
524 598 996 380 818 1141 1237 631 234 1399 183 495 100 647 22 993 1519 764 420 800 556 569 1561 60 676 1197 1025 1014 1460 814 792 1515 490 747 66 980 25 1563 234 958 262 822 1408 558 698 386 1022