The static load test shall be carried out according to the following procedures and requirements. Park the crane at the column. Tulaga tasi, 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, installation, and use. (1) The Impact of Unreasonable DesignIn the past, China followed the Soviet standards. The static stiffness of the main girder […]

E tusa lava po o le a le ituaiga masini, eseese suauu lubricating e faasaina mai le faʻafefiloi mo le faʻaaogaina, ma fa'aitiitiga e leai se fa'alavelave. Mo fa'aitiitiga, tulaga o le polo maualuga o le suauu, fa'amama alavai, ma le manava e fuafua i latou nofoaga faʻapipiʻi. A oʻo mai i le faʻaaogaina, asiasiga, ma le tausiga o le suauu lubricating i 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 tikeri, 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. […]

O le fa'apipi'iina o ala va'a ose faiga taua tele e fa'amautinoa ai le fa'aogaina lelei ma le fa'agaioiga o va'a i luga. O la'asaga auiliili o lo'o mulimuli mai o lo'o fa'amatala atu ai le fa'atulagaga fa'apipi'i: 1. Fa'ailogaina o Laina Fa'aaogāina o le fa'atūtū o le va'a va'a e fai ma fa'amatalaga, fa'apipi'i se theodolite e fa'amautu ai tulaga fa'avae. I le mamao e 60mm mai le laina ogatotonu, […]

Folasaga O le fa'alaloina ose itu taua o le saogalemu o crane, fa'amautinoaina le puipuiga o tagata faigaluega ma mea faigaluega mai lamatiaga tau eletise. O le fa'avaeina lelei e fa'aitiitia ai a'afiaga o le fa'ate'i eletise, afi, ma fa'aleagaina meafaigaluega e ala i le saunia o se ala fa'atuatuaina mo ala eletise e tafe saogalemu atu i le eleele. O lenei ta'iala o lo'o tu'uina atu ai se va'aiga lautele o mana'oga fa'avae […]

I. Fa'ailoga Tu'ufa'atasi mo Tagata Fa'atonu ma Tagata Fa'ailo E tatau ona fa'aogaina e tagata fa'apipi'i gatry ma tagata fa'ailo fa'ailoga fa'ata'atia ma fa'atasi ina ia mautinoa lelei feso'ota'iga ma fa'amaopoopo.. E tatau ona alu a'e pe alu ifo i lalo le potu fa'atonu e fa'aaoga ai apefa'i. A'o le'i fa'aogaina le eletise, e tatau ona liliu le pule i le tulaga le mautonu. O le fola o le fale e tatau […]

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 […]

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