من. Working Principle The hydraulic oil is pressurized by a vane pump and then passes through a filter, a flameproof electromagnetic reversing valve, a throttle valve, a pilot-operated check valve, and a balance valve to enter the lower end of the hydraulic cylinder. This causes the piston of the hydraulic cylinder to move upward, thereby […]
07
دسامبر
دسامبر
من. Tower Crane LiftingTower cranes have a lifting capacity ranging from 3 به 100 tons and a boom length of 40 به 80 متر. They are typically employed in situations where the usage location is fixed and the usage period is relatively long. This is a cost-effective option. Usually, a single tower crane is used […]
06
دسامبر
دسامبر
من. Safety Precautions for Tower Crane Foundation Pouring The bearing capacity of the tower crane foundation ground should not be lower than the ground resistance value specified in the technical requirements of the tower crane foundation drawing.The foundation of a tower crane is the key to its stable operation. The ground beneath it must possess […]
30
نوامبر
نوامبر
من. Introduction to Zero-Position Self-Locking Devices In the operation of cranes and other similar equipment, there is a need to prevent any inadvertent movements of the control console due to vibrations and accidental collisions. To address this concern, zero-position self-locking devices are installed on the operating handles. These devices play a crucial role in ensuring […]
30
نوامبر
نوامبر
من. Introduction to Crane Interlock Protection Devices Crane interlock protection devices play a crucial role in ensuring the safety and proper operation of cranes. These devices are designed to prevent certain actions or movements of the crane’s mechanisms when specific conditions are not met, thereby avoiding potential accidents and ensuring the well-being of the operators […]
30
نوامبر
نوامبر
من. Introduction to Lifting Machinery and Its Driving Devices Lifting machinery refers to electromechanical equipment that is used for vertically lifting or vertically lifting and horizontally moving heavy objects. In this section, we will introduce the requirements for the driving devices of lifting machinery. The driving device is the power equipment used to drive the […]
30
نوامبر
نوامبر
من. Pre-Installation Inspection and Maintenance Before commencing the installation of a fixed-column jib crane, it is of utmost importance to carry out a meticulous inspection. اولا, based on the packing list, carefully check whether there are any missing items or damages to the products and technical documents. During transportation, various issues might occur, مانند […]
29
نوامبر
نوامبر
من. Introduction to Pre-Departure Inspections Before a mobile crane is put into operation and starts traveling on the road or moving around a worksite, it is of utmost importance to conduct thorough pre-departure inspections. These inspections are designed to ensure that the crane is in a safe and proper working condition, minimizing the risks associated […]
29
نوامبر
نوامبر
من. Introduction to Crane Over-Speed Protection Crane over-speed protection is a crucial safety protection device installed in the hoisting mechanism of cranes. It plays a vital role in ensuring the safe operation of cranes and safeguarding the well-being of various personnel involved in crane operations, as well as protecting the crane equipment itself from potential […]
29
نوامبر
نوامبر
من. Introduction When a gantry crane is in operation, especially during rotation, brake failure can pose significant risks and disrupt the normal working process. In this regard, a detailed analysis of the causes and corresponding solutions of brake failure during the rotation of the gantry crane is of great importance. دوم. Observation of the Problem […]