Why can't the seasonal maintenance of slippery contact line be ignored?

Dry weather in spring can easily cause a fire. Like industrial plants, fire prevention is the top priority. As a sliding contact line, how can we better avoid fires caused by fire? Today, I want to talk about Wang Xu.

When you check the sliding contact line, you need to pay attention to check whether the joint is cracked or the screw is loose or disconnected; also check whether the movable part is flexible, whether the tension spring is used normally, and whether it will appear out of touch; because These will affect the conductive function of the slider and the tracking function of the current collector.

In order to ensure the normal operation of the sliding contact line and extend its service life, after the sliding contact line is put into operation, it should be regularly repaired. Be sure to do the following.

1. Brush: It should be checked every 1-3 months according to the usage of mobile electrical equipment. Focus on checking the wear of the current collector brushes. If the amount of wear is â‰¥5mm, it must be replaced. If the brush is found to be loose or abrasion and deflection occurs during the inspection, the cause should be identified and dealt with in a timely manner.

2. Current collector: Check at least quarterly. Focus on checking the fasteners for looseness, displacement, and wear of plastic and moving parts, and check the spring tension. If the slip line is found, the problem will be dealt with in time.

3. Connections: Check at least once a year. Focus on checking whether the fastening bolts, welds and supports are loose, rusted, shifted, etc. If problems are found, deal with them in a timely manner.

4. Daily inspection: Focus on checking whether the straightness of the track has obvious deviation (greater than 20mm), misalignment, whether the insulation protection parts fall off, break, or break, whether the stainless steel "v" groove is lifted up; whether there are foreign objects on the track And conductive dust. If necessary, check whether the insulation resistance meets the requirements.

5. When selecting the sliding contact line, select a qualified manufacturer. The raw materials used by the qualified manufacturer are tested, which is enough to self-extinguish in the event of fire.

Especially for environments where the track overlap, track gauge, and inclination are large, frequent use, excessive dust in the workshop, high temperature, and water, acid, alkali, fog, and outdoor use environments, daily inspection of slippery contact lines must be strengthened. And maintenance.

In the maintenance of the sliding contact line, it is necessary to periodically check it periodically. Since the sliding contact line is an indispensable part of electrical machinery, a slight error will affect its normal operation, and then affect the power of all machines, and the benefits will also be Be affected to some extent.

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Scientific life: how to do well in disease prevention during continuous drought?

Recently, the number of outpatients in various medical institutions in Beijing has surged, the number of patients with cardiovascular and cerebrovascular diseases and respiratory diseases has increased, and the beds in some hospital wards are very tight. Experts believe that this is related to the continuous drought.

Although a few days ago, an artificial precipitation ended the 110 day dry weather in Beijing, the air relative humidity in Beijing is still significantly low. The minimum air relative humidity measured by the meteorological department is less than 20%, and the daily air relative humidity is no more than 50%. According to scientific research, the relative humidity of the air comfortable to the human body is 60% to 70%. Exposure to a dry environment for a long time will have many adverse effects on human health.

Recently, during an interview with several major hospitals in Beijing, the reporter found that the number of outpatients and inpatients in hospitals increased sharply. According to experts, affected by abnormal weather, more patients came to the hospital before and after the spring festival than in the same period in previous years, which is related to the activity of bacteria and viruses and the impact of human physiological activities under warm and dry weather conditions.

Experts suggest that in a dry environment, aroma diffsuer can be used to alleviate air drying and moisturize the skin to a certain extent

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