wheel barrow (wheelbarrow; barrow; Hand truck) is a handling vehicle pushed and pulled by manpower, and it is the ancestor of all vehicles. Although the handcart material handling technology is developing continuously, it is still used as an indispensable handling tool. Trolley is widely used in production and life because of its low cost, simple maintenance, convenient operation and light weight. It can work in places where motor vehicles are inconvenient to use, and it is very convenient to carry light items in short distances. Basic introduction Chinese name: Trolley mbth: The cart Attribute: Car material: stainless steel, steel, plastic, aluminum Brief introduction, classification, application, relevant information, safety of trolleys, transformation of trolleys, brief introduction Overview Trolleys are divided into one wheel, two wheels, three wheels and four wheels. The unicycle can run on narrow springboard, temporary bridge and narrow path, and it can turn in place, so it is very convenient to dump goods. Commonly used two-wheeled vehicles include hand-propelled trucks (also known as tiger trucks), shelf trucks and bucket trucks that carry bulk materials. One in the three-wheeled cart and two in the four-wheeled cart can rotate around the vertical axis (see figure). This kind of slewing caster can automatically adjust to the direction with the minimum running resistance with the change of the moving direction of the vehicle. Trolley classification Trolleys with different uses have different body structures. Most common four-wheeled carts have a cargo platform. Special trolleys have many structures, some of which are made into boxes, which are suitable for carrying light and easy to load and unload; Some car bodies extend out of the bracket to facilitate the placement of parts such as rods, shafts and pipes; Some car bodies are completely consistent with the goods, such as gas cylinder cars; Some are very small, can be folded and easy to carry; Some are convenient for loading and unloading cylindrical goods such as barrels of liquid and paper rolls, and there are two flat steels on the car body to form a low inclined plane, which is convenient for the cylindrical goods to roll up and down, such as the cylindrical goods loading and unloading vehicle. Modern trolleys are equipped with rolling bearings, and the wheels are made of solid tires or pneumatic tires. The anti-static handcart is made of stainless steel skeleton, wire mesh plate, steel column and anti-static nylon wheel. The four-corner column of the mesh plate is equipped with adjustment clips and adjustment grooves, which are light and flexible. The steel column is assembled with the protruding coil of the nozzle every other inch, which can adjust the required height as required and effectively discharge electrostatic charges. It is fast to adjust and convenient to use. Strong and durable, the laminate is divided into two types: mesh and plate, with bridge structure and uniform load distribution. The silent trolley is novel and beautiful, and the use of synthetic plastic body and casters reduces the weight of the whole vehicle. The unique mute and transmission technology design makes the trolley walk silently and briskly. Widely used in factories, office buildings, libraries, hotels, restaurants, logistics and transportation and other material handling industries. According to the different needs of use, trolleys have different specifications (for example, single-layer, double-layer, hand-pulled, hand-pushed, etc.), and reasonable selection should be made according to the weight and size of the loaded object. The types of wheelbarrows also include two-wheeled carts and single-wheeled carts, and there are also wooden-framed single-wheeled carts in some rural and mountainous areas of China. Wooden unicycle once played an important role in the pre-liberation movement in China. According to the different use environment, there are many kinds of materials for trolleys: stainless steel, steel, plastic, aluminum and so on. Stainless steel trolleys are widely used in food, medical and chemical industries, while steel trolleys are widely used in industries such as industry, warehousing and electronics. Plastic and aluminum trolleys are generally used in small warehouses, stores and shopping malls because of their light material and convenient carrying. Trolleys are widely used in the world. Generally, in Europe and North America, trolleys are used in gardens, while in Africa, trolleys are used in mines, while in the Middle East, trolleys are mostly used for construction. The most famous trolley manufacturing base in Jiaonan, Qingdao, China, serves trolley users all over the world all the year round. Anti-static trolleys are suitable for storing goods in semiconductor, IC, food, biomedicine, manufacturing and various clean room operation areas. Anti-static system resistance: 11 to the 6th power ~11 to the 9th power ω. The structure of the silent trolley has the following characteristics: 1. The plate of the silent trolley is made of special resin material or cold-rolled steel plate, which is durable. 2. Anti-skid rubber heads are attached to the plastic car board, and anti-skid rubber pads are attached to the upper surface of the steel car board. 3, silent trolley casters, using high-performance resin, effectively reducing noise and driving force. 4, chrome-plated handle bright and clean, durable. 6, the handle can be folded down, which can save space to the maximum extent. Feida trolleys, plastic trolleys, flatbed trolleys, silent trolleys, trolleys, flatbed trolleys, folding trolleys, casters, industrial wheels. Safety of trolleys 1. Using trolleys can reduce human lifting and back fatigue. They are usually the best choice for the following activities: loading and unloading heavy goods; Reduce the number of trips during the transportation of goods. 2. Choose a suitable trolley at work to determine the weight and size that it can be used to carry goods: special trolleys are only used for special handling purposes (for example, trolleys with bottom brackets can be used to carry round containers); Determine your handling route and remove any obstacles; Wear safe and non-slip shoes-it is recommended to use ANSI-approved safety shoes of the National Security Association to protect your feet and prevent heavy objects from falling and wheelbarrow wheels from being injured; Wear gloves to get good friction; Avoid wearing big, loose clothes, they will trip you up and hurt the wheels of the trolley. 3. Use appropriate skills to bend your knees and straighten your back with a trolley, and do this with your legs instead of your back; Don't push too hard, or the sudden lifting action will hurt your back. 4. Keep the goods balanced and stable when unloading, and put the heavier goods at the bottom; Don't exceed the height of your sight when stacking a pile of goods; Place the goods toward the front end of the bearing, not beyond the handle of the cart, and then carry the heavy objects; Make sure that the heavy objects are stable and will not shake or fall over; Handling bulky or sophisticated instruments must be bound and fastened. 5. Operate the cart to get the minimum physical fatigue and the maximum maneuverability to hold the handle tightly; Bend your knees and keep your back straight; Clear all the sundries on your way forward; Push, don't run; Push instead of pulling, so that the operation is not difficult; Only when you need to enter a narrow space can you walk backwards; Don't try to stop the cart with your feet. Transformation of Trolley 1. Usually, the frame of my trolley is relatively small, so it is very inconvenient and unstable to load big things. The frame can be improved so that it can expand and contract freely. 2. In order to be convenient and labor-saving when pushing the cart, the push frame can be folded at a certain angle here. 3. It is a very annoying thing when the cart goes downhill. If you are not careful, it will fall over. Especially in crowded railway stations, people who have used trolleys should feel the same way. You can add a braking device to reduce the pressure when you go downhill.