Lastest News on Crane Industry, Dejun Crane Company & Crane Discount -第10页-Henan Dejun Industry Co., Ltd

Repair and Maintenance of Overhead Cranes

In order to prolong the service life of the crane, improve the use rate of the equipment and ensure safe production, the daily maintenance and planned maintenance of the lifting equipment must be done well. Daily maintenance of Overhead Cranes Doing a good job in crane maintenance during the inspection interval is the basis for ensuring the continuous operation of the crane. Correctly do the maintenance during the maintenance interval. Maintenance work can extend the maintenance interval, reduce the workload of maintenance and improve the productivity of the equipment. Maintenance of the crane during the inspection interval is divided into: on-duty inspections, including maintenance, external inspections, cleaning, lubrication, and tightening. The first-level maintenance is a regular maintenance work, and the crane operator is responsible for it, mainly including the inspection, lubrication, tightening and adjustment of wire ropes, reels, pulleys, bearings, couplings, reducers, brakes, etc. First-level maintenance is regular maintenance work, which is responsible for maintenance workers, including the maintenance of various mechanisms and equipment of the entire crane. Plan maintenance of Overhead Cranes A planned overhaul of an overhead crane is the maintenance and repair of the crane within the dates specified in the plan. The purpose is to prevent...

What are the classification of gantry cranes?

According to the door frame structure Divided into gantry crane and cantilever gantry crane Gantry crane 1. Full gantry crane: The main beam has no overhang, and the trolley moves within the main span. 2. Semi-gantry crane: The outrigger has a height difference, which can be determined according to the civil engineering requirements of the site. Cantilever Gantry Crane 1. Double cantilever gantry crane: a common structural form, the force of the structure, and the effective and reasonable use of the site area are reasonable. 2. Single cantilever gantry crane: This structural form is often selected due to site constraints. According to the main beam form 1. Single main girder gantry crane The single main girder gantry crane has a simple structure, is easy to manufacture and install, and has a small weight. The main girder is mostly an off-track box frame structure. Compared with the double main girder gantry crane, the overall stiffness is weaker. Therefore, when the lifting weight Q≤50t and the span S≤35m, this form can be adopted. The gantry legs of single main girder gantry cranes are available in two forms: L type and C type. The L-type is easy to manufacture and install, with good...

Characteristics of Cranes Break-in Period

After the overhead crane, gantry crane, or jib crane leaves the crane factory, it is generally stipulated that there is a running-in period of about 60 hours (some are called the running-in period). The running-in period is stipulated by the manufacturing factory based on the technical characteristics of the cranes in the early stage of use. The running-in period is an important link to ensure the normal operation of the crane, reduce the failure rate and prolong its service life. But at present, some users ignore the special technical requirements of the running-in period of the new machine due to a lack of common sense of crane use, tight construction period, or wanting to obtain benefits as soon as possible. Some users even think that the manufacturer has a warranty period anyway, and the manufacturer is responsible for the maintenance if the machine is broken. So the machine is overloaded for a long time during the break-in period, resulting in frequent early failures of the machine, which not only affects the normal use of the machine. The service life of the cranes is shortened, and the progress of the project is also affected due to the damage to the machine....

DeJun Cranes will Take Part In FABEX Saudi Arabia 2022

The Metal & Steel FABEX Saudi Arabia is the most influential metal and steel processing exhibition in Saudi Arabia. Now, FABEX Saudi Arabia 2022 is held in RICEC Riyadh International Convention & Exhibition Center Riyadh from 2 to 5 October 2022 with showing the companies news of Saudi Arabia and internationals related to sectors metallurgical, metallurgy, metal, steel, etc. DeJun Cranes is glad to inform all of our customers that we, as a crane factory, will attend the FABEX Saudi Arabia 2022. Please see our exhibition information below and remember. We are looking forward to talking with you face to face. Company Name: Henan Dejun Industrial Co., Ltd Show Time: 2nd- 5th, October 2022 Exhibition Booth No: D69 Exhibition Site: Riyadh International Convention and Exhibition Center, Saudi Arabia DeJuncranes products involve overhead cranes (single girder & double girder), gantry cranes (single girder & double girder), jib cranes, semi gantry cranes, mobile cranes, hoists, winches, aerial work platforms, and other crane products. If you have any needs for crane products, please feel free to give us a shout.

How to Choose a Suitable Gantry Crane

In the construction sites of some major engineering projects, gantry cranes, as a kind of large-scale crane equipment, usually need to be purchased and installed before the start of the project. Especially after the specific project site is determined, it is necessary to select the gantry crane according to the actual site and use requirements. The following is the selection basis and precautions for gantry cranes for your reference. Selection basis of gantry crane Relevant regulations It shall comply with the related regulations of GB/T14406-1993 and GB5905-86 for general gantry cranes. Under normal circumstances, the lifting capacity is less than 50t, the span is less than 35m, and there are no special requirements for use, the single main beam type gantry crane should be selected. If the width of the gantry leg is required to be large, the working speed is high, or the heavy and long pieces are often hoisted, the double-girder gantry crane should be used. Span and cantilever length The span of the gantry crane is an important factor affecting its quality. When selecting models, the span should be minimized under the premise of meeting the equipment use conditions and the span series standards. Determination of wheelbase (1) To be able to...

How to Weld Overhead Cranes Better

For large lifting equipment, such as overhead cranes, the success of welding mainly depends on the correct guidance. There are many aspects to be checked for judging how to weld overhead cranes. Welding process factors that affect the tensile strength and bending properties of welded joints include welding method, type of base metal, number of welding electrodes, type of shielding gas, etc. If these factors change, the entire overhead crane has to re-evaluate the welding process. For the welding standards of overhead cranes, there must be correct specification guidance to avoid detours. So, the functions of overhead cranes can play a more prominent role without affecting the use of equipment. The main reasons for the welding deformation of overhead cranes Overhead cranes are hoisting equipment, which is placed horizontally over workshops, warehouses, and material yards for material hoisting. Its two ends sit on tall concrete pillars or metal support, shaped like a bridge. Overhead cranes are used widely in engineering and production, but many problems will occur during use. During the maintenance process, the welding deformation of the overhead crane is found, and the control of the deformation has become an urgent problem to be solved. Because the cross-sectional shape of...