When a special vehicle is started, the following conditions are most likely to occur. Hereafter, we will use a compression garbage truck as an example to introduce solutions to several common problems.
When the compression type garbage truck is started, the engine speed of the compression type garbage truck is too low
The cause of the accident and its solution: The starter brush of the compression type garbage truck is loosely connected to the battery rectifier battery or the power storage is insufficient. When the storage capacity of the battery is insufficient, the rotational speed of the starter may be insufficient, so that it is difficult for the compression type garbage dump engine to reach the required rotation speed at the time of start-up, resulting in difficulty in ignition. Therefore, when the battery of the compact garbage truck is not enough, it must be charged in time.
The driver's friends should also check the wiring of the compression garbage truck in due course. If the wiring is loose, tighten the cable in time, and the bad contact or premature circuit connection will lead to the top teeth; when the electromagnetic circuit fails, the start-up opportunities will idle and the gears will not mesh. Can not drive the compression garbage truck engine running. At this time, if the line is overhauled, the eccentric shaft below the electromagnetic switch of the starter must be adjusted, if necessary, so that the distance of the ring gear is appropriate.
The compact garbage truck's battery should be packed compactly. If the brush is in poor contact, sparks will be emitted at loose joints at the start. Therefore, it is necessary to check the surface of the commutator in a timely manner. If uneven or loose phenomenon occurs, it is necessary to grind or replace the brush.
When the cold garbage truck is started in cold weather, it is necessary to heat the radiator and warm the oil.
U-tube refers to a heat exchange tube shaped like a U, which is an important part of a U Type heat exchanger. Advantages of U-shaped tube: The U-shaped tube heat exchanger has only one tube plate, both ends of the tube are fixed on the same tube plate, the tube can be stretched freely, no thermal stress, and the thermal compensation performance is good; the tube side adopts double tube side, The process is longer, the flow rate is higher, the heat transfer performance is better, and the pressure bearing capacity is strong. The tube bundle can be drawn out from the shell, which is convenient for maintenance and cleaning, and the structure is simple and the cost is cheap. The disadvantage of the U-shaped tube is that due to the limitation of the radius of curvature of the bend tube, the arrangement of the heat exchange tubes is less, the innermost tube spacing of the tube bundle is relatively large, the utilization rate of the Tube Sheet is low, and the shell-side fluid is easy to form a short circuit, which is harmful to the transmission. When the tubes are leaked and damaged, only the U-shaped tubes at the periphery of the tube bundle are easy to replace. If the inner heat exchange tube is damaged, it cannot be replaced, but can only be blocked. Moreover, one damaged U-shaped tube is equivalent to two damaged tubes, and the scrap rate is relatively high.
U-tube,U Shaped Tube,Bundle Tubes,U Tube Bundle
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