(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. L’alineació precisa d’aquests centres centrals és fonamental. In large industrial workshops where cranes operate continuously, any misalignment here can lead to uneven stress distribution on the crane structure during movement. […]
14
Jan
Jan
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. A més, 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. No obstant això, for instrument […]
14
Jan
Jan
(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. […]
13
Jan
Jan
The static load test shall be carried out according to the following procedures and requirements. Park the crane at the column. Primer, 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 […]
13
Jan
Jan
Hydraulic jacks serve as the intermediate medium in hydraulic transmission systems, playing the roles of transmitting and converting energy. At the same time, they also perform functions such as lubricating, preventing corrosion, cooling, and flushing among various components within the hydraulic system. The main performance requirements of hydraulic jacks are as follows: Appropriate Viscosity and […]
12
Jan
Jan
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. Per tant, 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 […]
11
Jan
Jan
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 […]
10
Jan
Jan
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, installation, and use. (1) The Impact of Unreasonable DesignIn the past, China followed the Soviet standards. The static stiffness of the main girder […]
31
desembre
desembre
Transmissió final La transmissió final s'utilitza generalment per canviar la direcció de transmissió, reduir la velocitat de rotació, augmentar el parell, i assegurar-se que el vehicle té la força de conducció suficient i una velocitat adequada. Hi ha molts tipus de unitats finals, inclosa una sola etapa, doble etapa, de dues velocitats, i reductors del costat de les rodes. Conducció final d'una sola etapa: Un dispositiu que aconsegueix […]
31
desembre
desembre
Una presa de cargol, també conegut com a presa mecànica, és un dispositiu que utilitza la transmissió d'un parell de cargols impulsat per la força humana, amb la vareta de cargol o la màniga de la femella que serveix com a component d'elevació. Una presa de cargol normal admet objectes pesats mitjançant la funció d'autobloqueig de la rosca del cargol. Ho té […]