Crane structure classification
1, beam crane
Loading and unloading of items can be used for workshops, warehouses, open yard in the rectangular space over job, etc., girder cranes, bridge cranes, gantry cranes, crane, carrying bridges.
① girder cranes: the main girder cranes including single girder overhead crane and double girder overhead crane
Single girder overhead crane bridge main beam multi-word combination of cross-section of the type of steel or steel and steel plate. Lifting car often as chain hoists, electric hoist or hoist as lifting mechanism parts assembled.
Bridge support hanging two. The former bridge along the car beam crane orbit; the latter bridge along the crane rails hanging under the roof of the plant is running. Single girder overhead crane of manual, electric two. The lower work speed manual single girder overhead crane agencies, less weight from the small but own quality, to facilitate the organization of production, low cost, when for no power handling not ask for much of the speed and productivity occasions. Manual single girder overhead crane with manual monorail car as a running car, hand pull hoist as lifting bodies, the bridge from the main beam and end beam. The main beam is commonly used single-beam end beams with steel or bending forming steel plate welded into.
Electric single girder overhead crane speed, productivity than manual high starting weight. Electric single girder overhead crane from the bridge, traveling mechanism, electric hoist and electrical equipment components.
② bridge crane:
The bridge crane is the bridge on the elevated track running bridge cranes, also known as crane. Bridge crane bridge along the track laid on both sides of the elevated vertical run, lifting trolley along the laying of the bridge track horizontal run, constitute the scope of work of a rectangle, it can make full use of the bridge following space for lifting material not obstruction by ground equipment.
The bridge crane is widely used in indoor and outdoor warehouse, plant, docks and open storage stockyard, etc.. For ordinary bridge crane, simple beam bridge crane and metallurgical bridge cranes overhead crane can be divided into three kinds.
The ordinary bridge crane generally by lifting trolley, bridge run institutions, bridge metal structure. Lifting trolley is composed of three parts by the hoisting mechanism, trolley run institutions and small frame.
The hoisting mechanism includes the motor, brake, reducer, reel and pulley block. Motor through reducer, driven reel rotation, so that the wire rope wound on the roll or from roll down, lifting heavy objects. Small frame bracket and rack installation from the lifting mechanism and trolley run institutions such as parts usually welded structures.
2, jib cranes
Cantilever crane post bed, wall-mounted, balanced crane three forms
① column boom hoist is cantilevered rotatable about rotary fixed at the base of the fixed column or the boom with the rotary column rigidly connected together within the base support with respect to the vertical centerline of the rotation of the uprights and cantilever boom hoist. It is suitable for little from the weight of the operating range of services for a round or fan-shaped occasions. Generally used for the workpiece chucking and handling of the machine tools.
Of column jib crane with electric chain hoist as lifting mechanism and run institutions, less electric wire rope hoist and chain hoists. Rotation and horizontal movement of jobs to use more manual, only from the greater weight when using electric.
The ② walls of the crane is fixed on the wall cantilever crane, cantilever crane on the elevated track running along the wall or other supporting structure.
The wall crane use the occasion for the most suitable for larger span, the height of the building a large workshop or warehouse, near the wall near the Lifting Operations frequent. Crane wall line more than used in conjunction with the top of the beam or bridge crane services in a rectangular space at close to the wall, light small objects responsible for lifting the large beam or bridge crane.
③ balance cranes commonly known as balance suspended, it is the use of a four-bar linkage principle the load balanced counterweight to constitute a balanced system, and can use a variety of spreader flexible and easily lifting loads in three-dimensional space. Lightweight, flexible, balanced crane is an ideal lifting equipment for lifting small items, are widely used for machine loading and unloading of the factory floor, in-process, automatic production line, the production line of the workpiece, sand box lifting, parts and assembly, as well as railway stations, docks, warehouses, and other occasions.
3 gantry crane
The gantry crane is generally to be classified according to the structure of the mast, the form of the main beam, spreader form.
Doorframe structure:
(A) gantry cranes: the main beam no overhangs, the car in the main span.
(B) semi-gantry crane: outrigger height difference, according to the civil requirements for use of the venue.
The double cantilever gantry crane (c): The most common form of a structure, its force structure and the effective use of the site area are reasonable.
The single cantilever gantry crane (d): This structure is often due to the restrictions of the venue has been chosen.
According to the structure of the main beam:
(A) single girder gantry crane
Cantilever gantry crane single girder structure is simple, easy to manufacture and installation, their small mass, the main beam mostly off-track box-shaped frame structure. Compared with the double girder gantry crane, the overall stiffness weaker. Therefore, when the starting weight Q ≤ 50t, span S ≤ 35m, this form can be used. Single main door beams cranes door legs L type and C-type form of L-manufacture and installation convenience, force The quality of their smaller, but lifting cargo space through the legs at a relatively small number of C-type feet made inclined or curved, aimed at larger horizontal space, in order to make the goods pass the feet.
(B) double girder gantry crane
Double girder gantry crane carrying capacity, large span, the overall stability of many varieties, but their quality and the same from the weight of the single girder gantry crane compared to the bigger, the cost is also higher. According to the different structure of the main beam, can be divided into the box girder truss two forms. More generally box-shaped structure.
Each crane must have a corresponding picture, the picture is very clear, and click larger. Products must be the product of the Division I and Division I Products page and can be linked to each form of crane motor. The red part of the requirements made of the need to click before they appear in the drop-down list, otherwise see it is roughly summarized.