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

Kranų vikšrų įrengimas yra labai svarbus procesas, užtikrinantis tinkamą tiltinių kranų išvedimą ir veikimą.. Tolesniuose išsamiuose žingsniuose aprašoma diegimo procedūra: 1. Linijos žymėjimas Naudojant krano sijos padėties ašį kaip atskaitą, panaudoti teodolitą, kad nustatytų bazinius taškus. 60 mm atstumu nuo bėgių vidurio linijos, […]

Įvadas Įžeminimas yra esminis krano saugos aspektas, užtikrinant tiek personalo, tiek įrangos apsaugą nuo elektros pavojų. Tinkamas įžeminimas sumažina elektros smūgio riziką, gaisras, ir įrangos pažeidimai, nes užtikrina patikimą kelią elektros srovėms saugiai tekėti į žemę. Šiame vadove pateikiama išsami įžeminimo reikalavimų apžvalga […]

aš. Vieningi signalai operatoriams ir signalų personalui.. Operatoriai turėtų pakilti arba nusileisti valdymo kabina tam skirtomis kopėčiomis. Prieš įjungdami maitinimo šaltinį, valdiklis turi būti pasuktas į neutralią padėtį. Kabinos grindys turėtų […]

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

aš. 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. Todėl, the safety issues of lifting equipment have always been emphasized by relevant departments. The moment limiter is one of […]