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How to stop electric hoist suddenly? |
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First, consider the poor contact of the sliding contact wire. When the electric hoist passes through the sliding contact line interface, the electric hoist often stops suddenly, and in serious cases, the motor will be burned due to lack of phase. Some electric hoist contact wire models are dhg-4-16 / dhg-4-15. This kind of sliding contact wire is embedded in a specially prepared semi enclosed engineering plastic conduit with multipole copper guide rail with insulating slot plate as the transmission bus. Due to the quality of the sliding line and the site environment, the plastic shell of the sliding line is fragile and seriously deformed in the process of transportation and installation, which increases the installation difficulty of the sliding line. The interface between the sliding line and the sliding line is prone to dislocation, which often leads to poor contact and phase loss or power failure when the collector passes through the interface, and the electric hoist stops suddenly. The second consideration is the collector, collector model: jd-4-40s / jd-4-60, built-in spring support, sliding carbon brush and sliding line contact. Due to the rainy coastal areas, high air humidity and other environmental factors, the spring is easy to rust and fail, resulting in poor contact between the carbon brush and the sliding line. When the carbon brush passes through the uneven sliding line interface, the carbon brush contact can not successfully pass through the interface due to the small inertia of the electric hoist, resulting in poor contact of one phase of the collector. After considering the use of electric hoist. When the electric hoist hoisting equipment is used irregularly, there are various kinds of oblique pulling and inclined hoisting. The electric hoist drives the collector to deviate from the normal track due to the force inclination, which leads to poor contact between the collector and the sliding line and leads to the lack of phase or open circuit, which makes the electric hoist stop suddenly. In serious cases, the motor is often burned due to the lack of phase. In order to eliminate the bad situation between the collector and the sliding wire, we first reinforce the sliding wire interface position to ensure the smoothness of the interface as far as possible; secondly, replace the rusted spring of the collector, and at the same time polish the carbon brush contact to make the contact more smooth, eliminate the gap due to the uneven sliding wire interface, and ensure that the contact can effectively contact with the copper guide rail of the sliding wire. After that, it is necessary to strengthen the technical disclosure to the users of electric hoist, so as to use the electric hoist correctly and normatively. |
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