Design idea of stage manual hoist of Tianjin Kemei Machinery Manufacturing Co., Ltd

　　I. Design Objectives

　　(1) Safe and reliable

　　The stage manual hoist needs to carry heavy equipment and props during use, so safety is the primary goal of the design. Kemei Machinery Manufacturing Co., Ltd. uses high-strength materials and precise manufacturing processes to ensure the robust structure of the manual hoist, which can withstand heavy loads.

　　Various safety factors are also considered in the design, such as anti-slip handles and overload protection devices, to prevent accidents.

　　(2) Convenient operation

　　Stage workers need to operate the chain hoist quickly and accurately during the intense preparation and performance of the show. Therefore, the design focuses on the convenience of operation, making the operation of the manual hoist simple and labor-saving.

　　The handle designed with ergonomic principles provides a comfortable grip and moderate operating force, effectively reducing fatigue for workers.

　　(3) Precise control

　　In stage performances, there is a high demand for the precision of the positioning of equipment and props. The manual hoist needs to be able to achieve precise lifting and lowering control to ensure the perfect presentation of the stage effect.

　　The design incorporates a high-precision gear transmission system and fine-tuning device, capable of achieving millimeter-level position adjustment, meeting the high-precision requirements of stage performances.

　　(4) Strong durability

　　Stage equipment needs to be used and transported frequently, so the durability of the chain hoist is also an important consideration in design. Kemei Machinery Manufacturing Co., Ltd. selects high-quality materials and components, and undergoes strict quality inspection and testing to ensure that the manual hoist has a long service life.

　　At the same time, factors such as waterproofing and dust prevention are also considered in the design to adapt to different stage environments.

　　II. Design Features

　　(1) High-strength materials

　　The main structure of the manual hoist is made of high-strength alloy steel, which has high strength and hardness and can withstand heavy loads.

　　The chain is made of high-quality alloy steel and undergoes special heat treatment processes, featuring high strength, wear resistance, and corrosion resistance.

　　(2) Precision gear transmission

　　Using a high-precision gear transmission system, the transmission ratio is accurate, the operation is stable, and precise lifting and lowering control can be achieved.

　　The gears are precision-machined and heat-treated, with high hardness and wear resistance, ensuring long-term stable operation.

　　(3) Ergonomic design

　　The handle is designed with ergonomic principles in mind, providing a comfortable grip and moderate operating force. The shape and size of the handle have been carefully designed to accommodate the hand shapes and operating habits of different workers.

　　The overall structural design of the manual hoist is reasonable, easy to operate, and can effectively reduce the fatigue of the workers.

　　(4) Safety protection device

　　Equipped with various safety protection devices, such as overload protection devices and anti-slip devices, to ensure safety during use.

　　The overload protection device can automatically stop lifting when the load exceeds the rated value, preventing the manual hoist from being damaged due to overload. The anti-slip device can effectively prevent the chain from slipping during lifting, improving the safety of operation.