Rotary coupler for excavator with wear compensation device

• Main Author: LEE JONG JUN
• Format: Patent
• Language: English; Korean
• Published: 23.07.2021
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DREDGING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; FOUNDATIONS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULIC ENGINEERING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; LUBRICATING; MECHANICAL ENGINEERING; SOIL SHIFTING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS

The present invention relates to a rotary coupler for an excavator with a wear compensation device. The rotary coupler for an excavator with a wear compensation device comprises: a fixing case having a fixing plate unit and a sidewall unit fixed underneath the fixing plate unit, and providing an accommodation space opened downwards; a worm case positioned on one side of the fixing case and opened to the accommodation space; a worm installed in the worm case to be axially rotated; a hydraulic motor axially rotating the worm; a worm wheel engaged with the worm while being accommodated in the accommodation space, and having an inclined surface on the lower side of the outer circumferential surface thereof; a power transfer unit fixed on the inside of the worm wheel, rotating with the worm wheel, and outputting the torque of the worm wheel downwards; and a wear compensation device operated when the worm wheel in the accommodation space is deflected downwards by wear to restore the worm wheel to the position before the deflection, supported on the fixing case, surrounding the inclined surface of the worm wheel, and pressing the inclined surface to push and raise the worm wheel. The rotary coupler for an excavator with a wear compensation device of the present invention pushes and raises the worm wheel when the worm wheel is deflected downwards by wear to restore the worm wheel to the state before the wear to maintain a normal engagement state between the worm wheel and the worm to provide effective and accurate operation precision at all times. 본 발명은 마모보상장치를 갖는 굴착기용 회전커플러에 관한 것이다. 이는, 고정판부 및 고정판부의 하부에 고정되는 측벽부를 구비하고, 하부로 개방된 수용공간을 제공하는 고정케이스와; 상기 고정케이스의 일측에 위치하며 상기 수용공간으로 개방된 워엄케이스와; 상기 워엄케이스내에 축회전 가능하게 설치되는 워엄과; 상기 워엄을 축회전시키는 유압모터와; 상기 수용공간내에 수용된 상태로 상기 워엄과 치합하고, 외주면 하측에 경사면부를 갖는 워엄휠과; 상기 워엄휠의 내측에 고정되고 워엄휠과 함께 회전하며 워엄휠의 회전력을 하부로 출력하는 동력전달부와; 상기 수용공간내의 워엄휠이 마모에 의해 하부로 처졌을 때 조작되어 워엄휠을 처지기 전의 위치로 복원시키는 것으로서, 상기 고정케이스에 지지되며 워엄휠의 경사면부를 둘러싸고, 상기 경사면부를 가압하여 워엄휠을 밀어 올리는 마모보상장치가 포함된다. 상기와 같이 이루어지는 본 발명의 마모보상장치를 갖는 굴착기용 회전커플러는, 마모에 의해 워엄휠이 하부로 처질 때, 워엄휠을 밀어 올려 마모 전 상태로 복귀시킴으로써, 워엄휠과 워엄과의 정상적인 치합 상태를 유지하여, 항상 원활하고 정확한 동작 정밀성을 제공한다.