DI type electric chain hoist

Abstract

The invention provides an electric hoist, which includes a motor 1 and a speed reducer case 16 respectively placed at the two ends of a lifting chain wheel 21 of an electric chain hoist; centers of an output shaft 14 and the lifting chain wheel 21 are positioned on the two sides of a center horizontal plane of the motor 1 and a first-stage gear shaft 7; the electric hoist is further provided with limiting devices; a transmission chain formed by the motor 1, a safety clutch 3, the first-stage gear shaft 7, a first-stage gear 8, a second-stage gear shaft 9, a second-stage gear 11, a third-stage gear shaft 12, a third-stage gear 13, an output shaft 14 and a chain wheel 21 is arranged in an reversed C-shape on the horizontal plane; a brake 10 is mounted on a first shaft 7 on the right side of the speed reducer case 16; the chain wheel 21 at the outer end of the output shaft 14 adopts a cantilever structure; the limiting devices include a load limiting device and a chain wheel limiting device. The invention has the benefits that the complete machine of the DI type electric chain hoist has long service life (about 10-15 years), the working class is high (M5), the complete machine of the hoist is low in noise (not greater than 75 dB (A)), and the DI type electric chain hoist is in the lead-edge technology level in domestic electric chain hoists.

Description

technical field [0001] The invention relates to a light and small hoisting machine, in particular to an electric chain hoist. Background technique [0002] Electric chain hoist is a light and small lifting equipment with small size, light weight, convenient operation and reliable performance. It can be matched with single-girder cranes, suspension cranes, flexible KBK systems, cantilever cranes or fixed I-beam rails, etc. Widely used in factories, mines, ports, warehouses, freight yards, especially on production and assembly lines, it is an essential machine for improving labor efficiency and working conditions, and has a wide range of uses. [0003] There are some deficiencies in the existing electric chain hoist, which are embodied in the following aspects: First, the structure is unreasonable, heavy, and the C size is large (the C size of the electric chain hoist means that when the electric chain hoist is lifted at the highest limit position, the The vertical distance b...

AI Technical Summary

Problems solved by technology

[0003] There are some deficiencies in the existing electric chain hoist, which are embodied in the following aspects: First, the structure is unreasonable, heavy, and the C size is large (the C size of the electric chain hoist means that when the electric chain hoist is lifted at the highest limit position, the The vertical distance between the center of the heavy hook and the center of the ring of the electric chain hoist, see image 3 ); second, the working level is low; third, the safety clutch technology is immature, and the load limit value is unstable; fourth, the limit device is unreliable and has a low service life.

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