girder gantry crane

1. The single girder
Single girder gantry crane structure is simple, easy to manufacture and installation, small own mass, main beam mostly Partial rail box-shaped frame structure. Compared with double girder gantry crane,electric magnetic overhead crane the overall stiffness weaker. Thus, when the starting weight Q≤50t, time span S≤35m, can this form. Single girder gantry crane gate leg has L and C forms. L type of manufacture and installation convenience, the force was better, the smaller their own quality, but, lifting goods through space at the relatively small number of legs. C-shaped leg made inclined or curved shape, aimed at a greater horizontal space to make the goods pass foot.
2. The double main beam
Double girder gantry crane carrying capacity, span, good overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger, the cost is higher. Depending on the main beam structure, it can be divided into box beams and trusses in two forms. More commonly used box structure. [1]
Crane, mainly by the bridge, traveling mechanism, trolley, electrical equipment and other components. Depending on the frequency of use, it is divided into A5, A6 two operating levels.
main feature:
(1) bridge with box girder, automatic submerged arc welding.
(2) the use of the trolley beam track conductive cable conducting new device, safe and reliable.
(3) The lifting mechanism may also be provided in accordance with the requirements of the second set of security devices. Increase reliability.
(4) parts standardization, serialization, universal.
(5) control room unobscured, all institutions are in the control room to manipulate, manipulate flexible working comfort.

Crane deeds

Since there is a truncated cone-liter overhead-column, after forward or backward truncated cone column, Renzi Jia style and bracing frame. Those who are required to set up the rotary tower crane counterweight, its function is to support the counterweight to constitute a role opposite direction and lifting torque design balance required torque. In addition to the counterweight, but also often installed in its tail lifting mechanism. The reason why lifting mechanism with a counterweight mounted trailing arms together in the balance, you can assign a weight to play the role of the Ministry and, secondly, increasing the distance between the rope reel and the spire of the guide wheel between rows to facilitate rope around and avoid arbitrary justice phenomenon. Counterweight inversely related to the amount and length of the balance arm, and then there is a certain proportion between the balance arm length and boom length.

Improve portal crane

Therefore, only to completely change the way the former governor to solve the problem of high failure rate overhead crane fundamentally. With the fast development of electronic technology, inverter performance and reliability have been greatly improved, for applications in bridge portal crane suppliers crane drive system provides favorable conditions. We first take on the important work of assembling diesel locomotive repair library shelf 32 t overhead crane hook size vehicle drive system and improve the system frequency transformation, to improve its operating performance and reduce the failure rate.

Jib crane presentation

column jib crane, a crane, widely used in factories, workshop production lines, assembly lines and machine tools, and the upper and lower parts warehouses, docks and other occasions of heavy lifting. column mounted jib crane: extract means rotating arm hanging at the end or spin-hanging along the lifting arm runs a small car, the arm can swing, but can not pitch jib crane jib crane called. For machinery manufacturing, railway, chemical industry, light industry production lines or repair situation, especially in dense device, a short distance lifting, for frequent application of the product line will enhance production efficiency.

Single girder crane rules

a. single girder crane cab, the driver succession before driving, coping hooks, ropes and safety devices and other components according to the requirements of check card check, unusual circumstances, should be excluded.
b. Ground control of bridge gantry crane, the class should be someone responsible for inspection according to the requirements of the card check, unusual circumstances, should be excluded.
c. The operator must confirm to go on unmanned rail station or when we can close the main power supply. When locking or sign the power circuit breaker is closed by the original person only after the main power is removed.

Main beam form can be divided into single master volume and double main beam cranes

1. The single girder
single girder overhead crane structure is simple, easy manufacture and installation, small quality of their main beam much for the partial rail box-shaped frame structure. Compared with double girder gantry crane, the overall stiffness weaker. Therefore, when the starting weight Q≤50t, when the span S≤35m, can this form. Single girder gantry crane doors leg has L and C forms. L type of manufacture and installation convenience, the force was better, the smaller their own quality, but, lifting goods through space at the relatively small number of legs. C-type legs made of sloped or curved shape, aimed at a greater horizontal space, so that goods pass foot.
2. The double main beam
double girder gantry crane carrying capacity, span, the overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger, the cost is higher. Depending on the main beam structure, it can be divided into box beams and trusses in two forms. More commonly used box structure.