Assembly of elastic pin gear coupling

Published: 2020-11-12

The elastic pin gear coupling is an important part of mechanical equipment. It is commonly used in the connection of large equipment with reducers or motors. At the same time, it is also widely used in small and medium-sized equipment.The search of the elastic pin gear coupling is one of the important tasks of the machine installation. The purpose of the alignment is to make the center lines of the driving shaft and the driven shaft on the same straight line when the machine is working. Accuracy is related to whether the machine can operate normally, and is especially important for high-speed machines.The shaft material is generally carbon steel or alloy steel that has been rolled and forged and cut.

The elastic pin gear coupling is a component that connects the two shafts axially and transmits torque and movement. It has the ability to compensate for the deviation of the two shafts. In order to reduce the vibration of the mechanical transmission system and reduce the impact peak load, the elastic pin gear Type coupling should also have cushioning and shock absorption performance.The elastic pin gear coupling sometimes also has an overload protection function.When assembling, pay attention to the axial and radial directions to ensure that the elastic pin gear coupling device is correct, and there is no deviation that will cause the receiving torque to be too large and damage the elastic pin gear coupling or motor.The requirement is to strictly ensure the coaxiality of the two axes, so that no unilateral load occurs during operation, so as to maintain balance and reduce vibration.There are different ways to find the center of the elastic pin gear coupling. According to the position of the rotating equipment, it can be divided into two types: horizontal and vertical.

The drum gear coupling is evolved from the development of ordinary straight gear couplings.Drum gear couplingIn many industries, there are various standard and series products, which are composed of two drum-shaped outer gear sleeves and a pair of straight tooth inner gear rings. The torque is transmitted by the meshing of the inner and outer teeth, and the drum-shaped outer teeth are connected. The axis of the inner ring gear of the straight tooth of the sleeve swings (called angular displacement) to compensate for the relative deviation of the two transmission axes.The greater the bulge in the length of the tooth, the greater the angular displacement.From the perspective of bending strength and bearing capacity, the transmission torque of the drum gear coupling can be increased by 23% under the same working conditions.

The bulge in the tooth length direction makes the tooth pair contact better. Therefore, the drum gear coupling has the advantages of large transmission capacity, large angular displacement, stable transmission, high efficiency and long life.The drum gear coupling is composed of an inner gear ring with the same number of teeth and a flange half coupling with external teeth.The external teeth are divided into straight teeth and drum teeth. The so-called drum teeth means that the external teeth are made into a spherical surface. The center of the spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. Drum-shaped gear couplings Large angular displacement can be allowed, tooth contact conditions can be improved, torque transmission ability can be improved, and service life can be prolonged. The contact state along the tooth width when the drum-shaped gear coupling has angular displacement.

The internal structure of the drum gear coupling is very complicated, and the materials used can meet the requirements of torque and speed.The drum gear coupling has high strength and toughness, good hardenability, no obvious temper brittleness, small deformation during quenching, high fatigue and multiple impact resistance after quenching and tempering, low temperature impact Good toughness, high creep strength and strength at high temperature.The lubricating oil of the drum-shaped gear coupling is sprayed into the small holes at the bottom of the gear teeth, and the oil enters the meshing surface under the action of centrifugal force to play the role of lubrication and cooling.The oil flows out from both sides of the tooth after passing through the meshing surface. With this type of lubrication, the oil flows continuously and the magazine flows out.

After we spray the lubricating oil, the pressure caused by the centrifugal force enters the gear tooth meshing surface, so it has a better lubrication and cooling effect, and is suitable for high-speed and heavy-duty occasions.The lubricating oil is injected from the nozzle. Because the lubricating oil is subjected to the centrifugal force to maintain the lubricating oil layer on the outer circle of the gear during rotation, this lubrication method will leave the magazine in the ring gear, and the heat dissipation effect of the oil flow is also poor, so only Suitable for occasions with low power and low speed.After we use it, we need to maintain it frequently before it can be used for a long time.