(1) The deviation of the actual centerline of the track from the actual centerline of the crane girder shall not be greater than 10 mm. Precise alignment of these centerlines is fundamental. In large industrial workshops where cranes operate continuously, any misalignment here can lead to uneven stress distribution on the crane structure during movement. […]
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Precautions Before Installation 1. Preparation of Bearings Since bearings are treated with anti-rust measures and packaged, do not open the package until just before installation. Ngoài ra, the anti-rust oil coated on the bearings has good lubricating properties. For general-purpose bearings or bearings filled with grease, they can be used directly without cleaning. Tuy nhiên, for instrument […]
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(1) It is suitable for continuous and single tasks. In industrial production lines, for example, when a particular operation needs to be carried out repeatedly without much variation, the spring balancer can provide consistent support. This kind of continuous work often occurs in packaging processes, where the same item is repeatedly lifted, moved, and placed. […]
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The static load test shall be carried out according to the following procedures and requirements. Park the crane at the column. Đầu tiên, start the hoisting mechanism to conduct no-load lifting and lowering operations, and make the trolley run back and forth along the whole journey. This no-load trial operation shall be carried out no less […]
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Hydraulic jacks serve as the intermediate medium in hydraulic transmission systems, playing the roles of transmitting and converting energy. Đồng thời, they also perform functions such as lubricating, preventing corrosion, làm mát, and flushing among various components within the hydraulic system. The main performance requirements of hydraulic jacks are as follows: Appropriate Viscosity and […]
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Tower cranes are large-scale hoisting machinery commonly used in building construction. Due to the structural characteristics of tower cranes, the tower body bears relatively large eccentric bending moments. Vì thế, their installation and dismantling require strong technical skills, and safety management is rather difficult. A slight oversight can lead to major accidents with the destruction of […]
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The winter maintenance of construction machinery is of great significance. Especially in the northern regions where winters are long and the temperature remains low for extended periods. When construction machinery is used in winter, the cold climate can easily lead to difficulties in starting internal combustion engines, freezing of cooling water and electrolyte, intensified wear […]
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The reasons for the downward deflection of the main girder of overhead cranes are multifaceted and should be analyzed according to specific circumstances. Generally speaking, issues can arise from design, manufacturing, transportation, cài đặt, and use. (1) The Impact of Unreasonable DesignIn the past, China followed the Soviet standards. The static stiffness of the main girder […]
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Bộ truyền động cuối cùng Bộ truyền động cuối cùng thường được sử dụng để thay đổi hướng truyền, giảm tốc độ quay, tăng mô-men xoắn, và đảm bảo xe có đủ lực dẫn động và tốc độ phù hợp. Có nhiều loại ổ đĩa cuối cùng, bao gồm một giai đoạn, giai đoạn kép, hai tốc độ, và bộ giảm tốc bên bánh xe. Ổ đĩa cuối cùng một giai đoạn: Một thiết bị đạt được […]
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Một giắc vít, còn được gọi là jack cơ khí, là thiết bị sử dụng bộ truyền động cặp trục vít được điều khiển bằng sức người, với thanh vít hoặc đai ốc đóng vai trò là bộ phận nâng. Giắc vít thông thường hỗ trợ các vật nặng bằng chức năng tự khóa của ren vít. Nó có […]