RSK-lz Elastic Pin Gear-Type Coupling transmit high torque large-displacement compensation

Key Characteristics

Coexistence of High Torque and High Damping

Protects Core Gears

Adapts to Complex Operating Conditions

Primary Application Fields

Connection between engine and alternator in high-power diesel generator sets, requiring suppression of low-frequency torsional vibration and withstanding shock

Hydraulic pump drive systems in heavy engineering machinery (e.g., large excavators)

Power transmission systems of specialized vessels, requiring high reliability and shock resistance

Drive end of high-end test equipment, requiring precise transmission while isolating vibration from the power source

Crowned/Straight Gear Mesh: Used to transmit high torque and provide large-angle, large-displacement compensation capability.

Flexible Pin Assembly: Typically arranged on the end face or circumferentially around the gear sleeve, acting as a secondary or parallel force transmission/damping path. Its primary functions may include:

Absorbing high-frequency vibrations and shock loads, protecting the gear teeth.

Providing soft cushioning during start-up and braking, reducing the impact torque on the gears.

Providing additional torsional damping, improving the dynamic characteristics of the drive system.

 Basic Structure

Main Force Transmission Path: Two flange half-couplings with internal (or external) gears mesh with an intermediate gear sleeve featuring crowned external (or internal) gears. This forms the primary torque transmission and misalignment compensation mechanism.

Auxiliary Damping Path: A ring of nylon (or alloy steel) pins is added between the gear sleeve and one flange or between the two flanges. These pins are fitted with rubber/polyurethane elastomers. This part constitutes a parallel elastic damping stage.

Lubrication and Sealing: The gear teeth require good lubrication (grease or oil), while the pin section is typically designed to be lubrication-free. Therefore, the entire coupling requires complex compartmentalized sealing to prevent lubricant contamination of the elastic elements.

Structural performance:

The outer edges of the two half coupling flanges and the inner edge of the outer sleeve are made into half element shaped grooves with the same radius, combined to form column pin holes for embedding column pins. The driving shaft half coupling drives the outer sleeve through the column pin, and the outer sleeve drives the driven shaft half coupling to rotate through the column pin to transmit torque.

 Working temperature -20 ℃~+70 ℃.

Key Characteristics

Coexistence of High Torque and High Damping: Theoretically capable of simultaneously meeting the dual stringent demands of heavy-duty transmission and isolation of strong impact/vibration.

Protects Core Gears: The flexible pins act as a "first line of defense," absorbing most transient shocks, potentially significantly extending the service life of the expensive gear sleeve.

Adapts to Complex Operating Conditions: May be suitable for applications with severe torque fluctuations, frequent start-stop cycles, or the coexistence of misalignment and vibration.

Primary Application Fields

Connection between engine and alternator in high-power diesel generator sets, requiring suppression of low-frequency torsional vibration and withstanding shock.

Hydraulic pump drive systems in heavy engineering machinery (e.g., large excavators).

Power transmission systems of specialized vessels, requiring high reliability and shock resistance.

Drive end of high-end test equipment, requiring precise transmission while isolating vibration from the power source.