The static load test shall be carried out according to the following procedures and requirements. Park the crane at the column. Yn gyntaf, 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 […]

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 […]

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, gosod, and use. (1) The Impact of Unreasonable DesignIn the past, China followed the Soviet standards. The static stiffness of the main girder […]

Regardless of the type of machinery, different lubricating oils are prohibited from being mixed for use, and reducers are no exception. For reducers, the positions of the oil level plug, drain plug, and breather are determined by their installation locations. When it comes to the use, inspection, and maintenance of the lubricating oil in reducers, […]

(1) Requirements for Elastic Base Plates The elastic base plates are made of rubber sheets, and their properties should meet the following requirements: a Shore hardness of 70 – 80 graddau, a tensile strength greater than 130 kg/cm², an elongation at break greater than 300%, and a compressive elastic modulus of 700 – 1200 kg/cm². […]

Mae gosod traciau craen yn broses hanfodol sy'n sicrhau aliniad a gweithrediad cywir craeniau uwchben. Mae'r camau manwl canlynol yn amlinellu'r weithdrefn gosod: 1. Marcio Llinell Gan ddefnyddio echel lleoli'r trawst craen fel cyfeiriad, defnyddio theodolit i sefydlu pwyntiau gwaelodlin. Ar bellter o 60mm o linell ganol y trac, […]

Cyflwyniad Mae gosod sylfaen yn agwedd hanfodol ar ddiogelwch craen, sicrhau bod personél ac offer yn cael eu hamddiffyn rhag peryglon trydanol. Mae sylfaen briodol yn lliniaru risgiau sioc drydanol, tân, a difrod offer trwy ddarparu llwybr dibynadwy i gerrynt trydanol lifo'n ddiogel i'r ddaear. Mae'r canllaw hwn yn rhoi trosolwg cynhwysfawr o ofynion sylfaen […]

i. Arwyddion Unedig ar gyfer Gweithredwyr a Phersonél Signalau Rhaid i weithredwyr craen gantri a phersonél signal ddefnyddio signalau safonol ac unedig i sicrhau cyfathrebu a chydlynu effeithiol. Dylai gweithredwyr esgyn neu ddisgyn i'r caban rheoli gan ddefnyddio ysgolion dynodedig. Cyn ymgysylltu â'r cyflenwad pŵer, rhaid troi'r rheolydd i'r safle niwtral. Dylai llawr y caban […]

Proper lubrication and maintenance of the crane’s walking mechanism are critical for ensuring the equipment’s longevity, dibynadwyedd, and safe operation. This document provides comprehensive guidance on the lubrication and care of the crane’s walking components, including the reduction gears, Bearings olwyn, and open gear systems. Initial Setup and Reduction Gear Lubrication When the walking mechanism […]

i. Importance of Moment Limiters in Crane Safety Lifting equipment is a type of machinery with relatively high risks at construction sites. Once an accident occurs, it often leads to severe consequences with multiple casualties. Felly, the safety issues of lifting equipment have always been emphasized by relevant departments. The moment limiter is one of […]