Electric gourd and lorry using the same

Abstract

The invention discloses an electric hoist and a railway truck that adopts the electric hoist. Aiming at the problem that the existing electric hoist has poor climbing capacity, the electric hoist of the invention includes a travel carriage, a traveling electric motor, a driving gear and a rack that engages with each other; the driving gear is fixedly connected with the wheel axle of the travelingwheel and rotates coaxially, the rack is fixedly arranged on the upper surface of the lower edge of the steel I-beam along the length direction of the steel beam. As the gear is driven by the electricmotor, then the travel carriage is actuated along the steel I-beam to finish the traveling operation. During the travel of the carriage, the traveling wheel is designed to carry load, the transmission mechanism of the gear rack is designed to provide driving power, and the climbing capacity can reach 20 permillage. Preferably, a regulation electric motor and a corresponding driving mechanism areadded to control the engagement and disengagement of the gear rack; the gear rack disengagement mode is adopted under the normal lifting conditions to improve the running speed; and the gear rack engagement mode is adopted when the gradient is relatively higher.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to an electric hoist. Background technique [0002] The electric hoist is mainly composed of a motor, a transmission mechanism, a drum or a sprocket, and has the characteristics of compact structure, light weight, and simple operation. As light and small lifting equipment for lifting heavy objects, it is widely used in material handling occasions such as machinery manufacturing, metallurgical mines, transportation, petrochemical, light industry, and warehouses. [0003] Such as figure 1 As shown, the figure shows a schematic diagram of the overall structure of the existing electric hoist. As shown in this figure, the walking trolley 100 is composed of left and right split structures placed on both sides of the I-shaped steel beam 200, and a driving wheel 300 matched with the lower edge of the I-shaped steel beam 200 is arranged on one side thereof. The other side is pr...

AI Technical Summary

Problems solved by technology

[0004] Due to the rolling friction between the driving wheel 300 and the I-beam 200, the existing electric hoist has the problem of low climbing ability, and the climbing ability is only about 2‰ when the load is running.

Especially for ship-mounted cranes and truck-mounted cranes, the hull and car body will usually be eccentrically loaded and produce a large inclination angle during the lifting operation. Realize walking action

Similarly, for large-span bridge cranes, if the deflection-span ratio is too large, they are also troubled by the problem of electric hoist climbing

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