Do refrigerated trucks need ventilation slots in the cars?
The main purpose of installing ventilating troughs in refrigerated trucks is to facilitate the flow of cold air into the heat-insulated compartments, and to better ensure a balanced set of temperature in the insulated compartments. This is an optional equipment for refrigerated trucks and is generally large-scale refrigerated. The size of the car's car will be relatively large and long, so ventilators are usually installed. Or some customers with special needs may also need to install ventilation slots. For example, according to the national GSP certification requirements for drugs, the refrigerated vehicles that transport drugs must have a ventilation slot. The ventilation slots of vehicles are generally installed on the other four walls or on the bottom. Generally, the tops of the cars are not installed, and they are all fixed by rivets or fixed by welding. Way to install. The ventilation slots are made of stainless steel or aluminum alloy. Â
1. The maximum number of T-slots for refrigerated trucks can be installed on five sides. The use of its groove design can guarantee the smooth air-conditioning in the refrigerated car's thermal insulation box, better guarantee the refrigeration of the transported goods, and ensure the equalization of the temperature in the carriage, and the device can be equipped with ventilation slots in the compartment. If you are full, you will not worry about the lack of air conditioning. Â
2. The installation of ventilation slots not only increases the cold air circulation effect of the refrigerant, but also makes it possible to prevent the transportation cargo from adhering to the outside of the car floor and the side wall of the car body. Another name for ventilating troughs is also known as gutters. When transporting articles with heavier moisture contents, such as fresh meat, the ventilating trough can also be used as a sink, which can lower the water in the cargo. Stored and discharged to protect the car from contamination. Â
3. In addition to the ventilation effect of the refrigerated vehicle , it can also be used as an isolation rail, which can ensure that the transported items do not directly contact the wall, and can effectively protect the good and prevent moisture. Pollution and quality problems. In the country’s requirements for the transportation of pharmaceutical refrigerated trucks, it is also a rigid requirement that the drugs transported cannot reach the car wall. The reasonable height of the ventilating tank is 5cm distance.
Tower cranes typically use a combination of fixed and movable pulleys to lift and lower heavy loads. The pulleys are usually attached to the jib or boom of the crane and are used to change the direction and increase the mechanical advantage of the lifting system.
Some common types of pulleys used in tower cranes include:
1. Fixed Pulleys: These are stationary pulleys that are mounted at a fixed point on the crane. They change the direction of the lifting force and help distribute the load evenly.
2. Movable Pulleys: These pulleys are attached to a movable block that can be raised or lowered along the jib or boom of the crane. They provide additional mechanical advantage and allow for easier lifting of heavy loads.
3. Trolley Pulleys: These pulleys are used in conjunction with a trolley system that allows the crane to move horizontally along the jib or boom. The trolley pulleys help distribute the load evenly and provide smooth movement of the crane.
4. Counterweight Pulleys: Tower cranes often use a counterweight system to balance the load being lifted. Counterweight pulleys are used to attach the counterweights to the crane and ensure proper balance and stability.
It's important to note that the specific configuration and number of pulleys used in a Tower Crane can vary depending on the crane model and lifting capacity.
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