Rotary speed reduction device for automobile crane

Abstract

The invention discloses a rotary speed reduction device for an automobile crane, which mainly comprises a motor flange, a brake, a planetary gear reducer, an output gear, a bearing and a bearing pedestal, wherein the brake comprises a shell, a brake piston, a brake spring, kinematic/static friction plates, a combined seal, a gasket and a retainer ring; the planetary gear reducer is transmitted by a three-stage planetary gear train composed of a spline shaft sleeve, big, medium and small sun gears, big, medium and small planetary carriers, big, medium and small planetary gears, big and small internal gears and the like; and the output gear is supported in the bearing pedestal through the bearing, the upper part of the output gear is provided with a spline shaft and is connected with an internal splined hole of the big planetary carrier, and the lower part of the output gear is provided with an external gear. The rotary speed reduction device adopts three-stage planetary gear speed reduction to effectively improve a reduction ratio and the speed reduction and torque increase capability, improve the brake efficiency and the brake reliability, fulfill the aim of high efficiency and low-noise transmission, and effectively solve the problems of the conventional rotary speed reduction device used in the automobile crane. The rotary speed reduction device has the advantages of simple structure, large reduction ratio, high speed reduction and torque increase capability, and high sealing property.

Description

technical field [0001] The invention relates to a slewing deceleration device for a truck crane, in particular to a slewing mechanism suitable for various truck cranes. Background technique [0002] The slewing deceleration device of the truck crane is used to connect the hydraulic drive motor with the slewing ring gear. It integrates the functions of braking, slewing power transmission, deceleration and torque increase, and is a key component to ensure the reliable and safe realization of the slewing function of the truck crane. To a large extent, it determines the performance of its rotary operation. At present, the slewing reducer used on the active truck crane mainly has the following problems: (1) the sealing of the brake piston is not good, and the brake pressure oil is easy to seep into the brake, which affects the braking performance; (2) the internal The lubricating oil of each bearing seeps out, which affects the performance of the bearing; (3) The reduction ratio...

AI Technical Summary

Problems solved by technology

At present, the slewing reducer used on the active truck crane mainly has the following problems: (1) the sealing of the brake piston is not good, and the brake pressure oil is easy to seep into the brake, which affects the braking performance; (2) the internal The lubricating oil of each bearing seeps out, which affects the performance of

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