Portable embedded direct-current electric hoist

Abstract

The invention discloses a portable embedded direct-current electric hoist. The portable embedded direct-current electric hoist comprises a permanent magnet brushless direct-current motor, a controller, a left end plate, a right end plate, a rope roll, a first speed reduction device and a second differential transmission device, wherein the rope roll is rotationally arranged on the left end plate and the right end plate; a built-in motor base fixed to the right end plate is arranged in the rope roll; the permanent magnet brushless direct-current motor and the first speed reduction device are fixed to the built-in motor base in a butt joint manner, and the permanent magnet brushless direct-current motor and the first speed reduction device are embedded in the rope roll; the second differential transmission device is fixed to the left end plate and connected with the first speed reduction device through a transmission shaft; and during work, the permanent magnet brushless direct-current motor drives the second differential transmission device to rotate through the first speed reduction device and the transmission shaft, and the second differential transmission device drives the rope roll to rotate and work. After the above structure is adopted, the beneficial effects that the structure is simple and reasonable, hoisting is flexible and light, the size is small, the transmission efficiency is high, the braking effect is good, and usage is safe and reliable are achieved.

Description

technical field [0001] The invention relates to the field of electric hoist technology, in particular to a portable built-in DC electric hoist with light installation, small volume and good safety performance. Background technique [0002] With the development of society and the advancement of science and technology, people's economic income has increased significantly, and the material living standards have undergone fundamental changes. People's requirements for the purchased lifting equipment are also getting higher and higher. Many lifting devices on the market now use AC motors, which are inconvenient and bulky for outdoor or home use. At present, a small number of DC electric hoist products are being developed abroad. The structure is that the motor, the deceleration device and the wire rope drum are connected in series on the same axis. The disadvantages are that the length is large, the structure is heavy, and the mechanical efficiency is low. In addition, the motor...

AI Technical Summary

Problems solved by technology

Many lifting equipment on the market now use AC motors, which are inconvenient and bulky for outdoor or home use

At present, a small number of DC electric hoist products are being developed abroad. The structure is that the motor, the deceleration device and the wire rope drum are connected in series on the same axis. The disadvantages are that the length is large, the structure is heavy, and the mechanical efficiency is low. In addition, the motors of DC electric hoists developed abroad use DC motors with brushes and commutators. After a period of use, the carbon brushes need to be replaced. High-speed operation and reversing may easily cause damage to the commutator, or even burn out, and because the DC electric hoist is not equipped with a braking device, there are serious safety hazards. The potential danger is self-evident. At best, the traction machine cannot be used as a Electric hoist use

For this reason, many manufacturers and people of insight have developed and trial-manufactured in response to the above-mentioned problems, but so far no relatively ideal products have come out.

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