The correct method of operation: run organization in the range of short-distance running, should be selected according to the specific circumstances of the controller should be in the position of the handle. If you run institutions operating within long-distance range, must take control handle stepwise go to the last level, double girder crane factory, the motor is running at high speed, so that both the motor is good, but the work efficiency too high, and saving electricity. When hanging hook hoisting mechanism has objects, control handle back to the rise in the last stage of the zero position, must remain slightly (1 second) in the middle of each range. As for the heavy load, the handle on the second level should remain one more would be better, thus reducing the vibration when stopping hook. Crane starting to have a smooth and by levels of acceleration. Lifting mechanism for each file conversion time of 1-2 seconds, Leping double girder cranes, operating agencies for each file conversion time is not less than three seconds. Four truss structure a combination of four pieces of plane truss structure into a closed space, double girder crane installed on a horizontal surface is generally covered with trusses go platen, light weight, stiffness, but compared with other structures, size large, manufacture more complex, less fatigue, it has less production. Partial fasting truss structure similar rail box girder, a closed structure consists of four steel plates composed of, in addition to the primary web is solid web-shaped beams, the dual-beam cranes principle, the remaining three steel plates in accordance with the design requirements into many windows, forming a non-fasting truss diagonals in the upper and lower horizontal surfaces paved walkway truss plate, crane operation mechanism and electrical equipment installed in the bridge inside, lighter weight, the overall stiffness, which is more widely used in China's one kinds of patterns. Common bridge crane mainly electric drive, usually operated in the cab, there are remote control. From the weight of up to 500 tons, span up to 60 meters. Easy-beam bridge crane, also known as crane beam, its structure and composition is similar to ordinary bridge crane, from the weight, span and work rate are small. Bridge the main beam is a simple cross-section beam by a beam or other beam and plate steel composition, hand pull hoist or trolley hoist coupled simple as lifting the car, the car generally runs on the lower flange I-beams. Can bridge the orbiting overhead, but also suspended in underpasses along the orbit, which is called the crane girder suspension cranes. Metallurgy bridge crane in the steel production process can participate in a particular process operation, its basic structure and general overhead crane similar, but lifting a small car is also equipped with special work mechanism or device. Working features of this crane is the use of frequent, harsh conditions, high operating levels. Leping double girder cranes, generous heavy double girder crane installation is provided by generous heavy machinery Co., Ltd., Henan Province. Leping double girder cranes, generous heavy, double beam crane installation is generous Heavy Machinery Co., Ltd., Henan Province (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page or on the telephone picture to obtain the latest information, contact: Liu.