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The trolley can be divided into single wheel, two wheels, three wheels and four wheels. The unicycle can be driven on narrow springboards, bridges and lanes of sheep intestines. It can turn in situ and dump goods conveniently. Commonly used two-wheeled trucks are handcarts (also known as tiger carts), shelf carts and buckets for handling bulk materials. One of the three-wheeled trolleys and two of the four-wheeled trolleys have revolving casters that can revolve around the vertical axis (see figure). This kind of rotary caster can automatically adjust to the direction of minimum running resistance with the change of moving direction of the vehicle. classification Wheelbarrows for different purposes have different body structures. Generally speaking, four-wheeled trolleys have a loading platform. The special trolley has a variety of structures, some of which are box-shaped, suitable for handling light weight and easy to load and unload goods; some of which extend brackets to facilitate the placement of rods, axles and pipes; some of which are fully in line with the shape of goods, such as cylinder cars; some are very compact, foldable and easy to carry; some are convenient for loading and unloading drums of liquid, paper rolls and other cylindrical goods, on the body. The two flat steels form a low slope to facilitate the roll-up and roll-down of barrels, such as barrel cargo handling trucks. Modern trolleys are equipped with rolling bearings and wheels are made of solid or pneumatic tyres. Anti-static trolley is made of stainless steel frame, wire mesh plate, steel column and anti-static nylon wheel. Adjusting clamp and adjusting groove are installed at the four corners of the mesh plate cylinder. It is light and flexible. The steel column is assembled with groove ring and protruding coil of the nozzle piece every one inch. It can adjust the required height and release electrostatic charge effectively according to the need. The adjustment is fast and easy to use. Strong and durable, laminates are divided into mesh and plate, bridge structure, load-bearing distribution is even. Silent trolley is novel and beautiful. The use of synthetic plastic body and casters reduces the weight of the whole vehicle. The unique design of silence and transmission technology makes the trolley move quietly and lightly. It is widely used in material handling industry such as factory area, office building, library, hotel, catering industry, logistics transportation and so on. The trolley has different specifications according to the different requirements of use (e.g. single-layer, double-layer, hand-pulled, hand-pushed, etc.). When choosing the trolley, it is necessary to make a reasonable choice according to the weight of the object and the size of the object. The types of trolleys also include bicycles and unicycles, which are still used in individual rural and mountainous areas in China. The wooden frame bicycle once played an important role in the pre-support movement of China's liberation war. According to the different use environment, there are many kinds of materials: stainless steel, steel, plastic, aluminum and so on. Stainless steel trolleys are widely used in food, medical, chemical and other industries. Steel trolleys are widely used in industries such as industry, storage, electronics, plastic and aluminum trolleys. They are generally used in small warehouses, stores, shopping malls and other industries because of their light material and convenient carrying. application In the world, trolleys are widely used. Generally, in Europe, North American countries, trolleys are used in gardens, while in Africa, trolleys are used in mines. In Middle East countries, construction is used mostly. The trolley manufacturing base in Jiaonan, Qingdao, China is the most famous, serving the users of trolleys all over the world all the year round. Anti-static trolley is suitable for storing goods in semiconductor, IC, food, biomedicine, manufacturing and various dust-free room operation areas. Anti-static system resistance: 10 of the 6th power to 10 of the 9th power_. The structure of silent trolley has the following characteristics: 1. The silent trolley plate is made of special resin or cold rolled steel plate, which is strong and durable. 2. Plastic boards are equipped with anti-skid rubber heads, and steel plate boards are covered with anti-skid rubber pads. 3. Mute trolley casters, using high-performance resin, effectively reduce noise and driving force. 4. Chromium-plated handle is bright and smooth, durable. 5. The reversible handle can save space to the greatest extent. Trolley, plastic trolley, flat trolley, silent trolley, trolley, flat trolley, folding trolley, casters, industrial wheels
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