eot crane inspection and maintenance every month

1 ) check the amount of wear of the overhead bridge crane brake pad liner should not exceed 2mm, the contact area of the pad and the brake drum is not less than 70% ; inspection of the mounting pin wear and lubrication conditions and the amount of wear of the pin should not exceed 5 % of the original diameter of the shaft and a small amount of wear of the mandrel should not exceed 5% of the original diameter and the ovality of less than 0.5mm.
Wear 2 ) Check the rope , and so if there is broken wire , wire rope lubrication checks .
3 ) Check the

Crane Co

hook for cracks , wear dangerous section exceeds 5% of the original thickness ; hook nut locking device is complete , the individual parts on the hook set is complete and reliable. Hook should be flexible rotation , no jamming .
4 ) Check all bolts are loose and shortages.
Fastening bolts 5 ) Check the motor , reducer base and individually fastened .
6 ) Check the Hoist crane gearbox lubrication , the oil level should be within the specified range, part of the oil leakage should take measures against leakage .
7) gears.
8 ) Check the wear of the rope pulley balance of pulleys and pulley shaft lubrication.
9 ) Check the status of a pulley , see if it flexible, without damage, cracks, wear special attention given pulley shaft.
10 ) Check the brake wheel , uneven surface of their work should not exceed 1.5mm, brake wheel should not have cracks, radial runout should be less than 0.3mm.
11 ) Check the coupling, which should not be the key and keyway damage , loose ; shaft coupling between two axial string momentum should be 2 ~ 7mm.
Health 12 ) to check the size of the car , should not have to chew rails, three pivot, start and stop Wiggler and so on. Check the wheel rim wear and tread , wear rim thickness should not exceed 50 % of the original thickness of the wheel tread wear should not exceed 3% of the original diameter of the wheel .
13 ) Check the cart track conditions , to see whether the bolts loose, shortages plate is fixed on the track, the track cracks and breaks ; gap between two rail joints whether 1 ~ 2mm ( summer ) or 3 ~ 5mm ( winter ) , the vertical joints , misalignment is more than about 1mm.
14 ) on the crane comprehensive cleaning , remove dirt on it .

hoist gantry crane

Cantilever crane is fixed on the cantilever can be fixed around the base of the rotating column , or columns rigid cantilever and transfer , together with the base supporting the rotatable relative to the vertical center line of the column and the composition of the Hoist gantry crane boom . It applies from the weight of small, round or operating the range of services sector occasions. General machine tools and other artifacts used to hold cards and handling. bridge gantry crane jib crane column to use more electric chain hoist as from domestic small -tonnage crane hoisting mechanism and operating agencies , less use of wire rope hoist and chain hoists . Rotation and horizontal movement to use more manual operations , the use of electric only when lifting larger .
1 , rotary wall cranes : Optional XN hoist type chain hoist , CXT wire rope hoists ; condition of A3; size car operation mode selectable electric, manual ; electric lifting way .
2 , selection of key data and purchasing conditions : Starting weight (t), spin wall length L (m), lifting height h (m), plant clearance height (m), rotation angle ( degrees ) , crane types, gourds type, whether to do the foundation , the car runs.

jib crane

The main advantage of cantilever crane boom margins (pitching) rotation around the vertical axis with lifting cargo, using flexible action to meet the loading requirements, in the form of fixed, mobile and floating. Fixed XinXiang Crane jib crane mounted directly on the dock or pier base library field, the only place to work. Some of the boom is not only pitching rotation, and some can be either pitching rotation. Mobile XinXiang Crane eot crane can be run along the surface of the track or residence, the main line of cranes, tire cranes, crawler cranes and gantry cranes. Which tire cranes and gantry cranes at the port used very widely. Cars, tires, crawler cranes, mobile cranes, also known as automatic. Floating overweight is installed on a dedicated machine cantilever crane barge, widely used in the sea, the river port of loading and port construction door work.

Gantry crane (or overhead gantry cranes)

Conveying way timber haulage ways according to the type of timber, storage size, topography and covers an area that is selected regional requirements, which is currently being conducted among domestic experimental study and gain experience. Now introduce hoist gantry crane several major haulage way. Large timber gantry crane haulage storage sites use more gantry cranes (or overhead gantry cranes) stacking, unstacking, pulling wooden machine horizontal transport, or bridge crane stacking, steel crane unstacking to pull the wooden horizontal transport aircraft fitted. Conveying medium-sized timber frame bar semi-mechanized transport field, then use more stacking frame bar.

Bridge crane girder

On the main beam camber arch girder bridge crane concept refers to the bridge at both ends of the beam on a plane as a reference , the main beam relative to the plane of the beam end bent upward plane. Max crane girder span bent upward at the center of the main beam , the maximum value on the center of the arch is called the camber of the main beam . Camber on the direction of the main beam length of each part of the camber of the track known as the main beam of the curve, or simply camber line. The sino hoist size and shape of the camber curve crane main beam camber on the manufacture and use of cranes are two important technical conditions . Carrying trolley bridge crane in the main beam is running, if the main beam inelastic deformation , the car is always on a straight track running, which is the best , but in fact this is not possible , because the main beam is an elastomer. If the crane made ​​of the level of the main beam , the crane when under load , the position of the main beam load is bound to produce a downward bent , that hoist gantry crane under the so-called main beam deflection . This time as the car runs across the end of the cross , the car itself will likely slip , running instability phenomenon ; And when the car runs across the end of the span to occur when climbing phenomenon , the running resistance of the car increases easy burning motor . On the other hand , if there is a large main beam under torsion , also worsen driving conditions carts run institutions.

Double girder truss gantry crane

With economic development , it is not only occupies an important position in the national economy , but also in the fields of production and life are also expanding. Weight 160t double girder truss gantry crane gantry steel accounted for more than 60% of the whole weight is an important part of the whole crane engineering system design. Rationality and sino hoist reliability of the safety design of steel structures directly determine the ability to work and quality of work cranes ; while irrational steel design parameters will reduce the utilization of resources. Therefore, the gantry crane steel structure design and analysis has become the focus of the design in the field of research . Aiming at this situation , the use of modern design methods , conduct research on the optimization of a shipbuilding hoist gantry crane design theory 160t double girder truss gantry crane steel structure . Firstly, analysis of the current level of research and development trend of domestic crane , according to the shipyard 's design requirements, 160t double girder truss gantry crane steel structure design depth theoretical study proposes a more advanced design, and in ANSYS modeling, finite element analysis of strength and stiffness .

Double door frame is divided into rigid gantry legs hyperstatic

Railway yard gantry cranes ( hereinafter referred to as gantry cranes ) are mostly working in the open air , affected by natural wind . When the wind is greater than the steel crane predetermined value, the machine should be stopped . Or working in the state to stop the crane when subjected to strong winds , probably due to the wind and cause the brake device is not fortified gantry crane was blown away or tipping accidents , and even cause the plane crash . According to " crane safety supervision and inspection procedures " provides crane running on the track in the open-air work ( including rail gantry cranes ) , should be fortified wind devices. Two-stage wind brake effectively solve the wind braking railway gantry crane working state of hoist gantry crane emergency shelter under braking and static state . In the design and manufacture of gantry cranes , the correct choice of two levels of wind braking device is important . Hangzhou Railway Bureau tube gantry crane windproof two types of brake hydraulic brake wheel electric brakes two wind power hydraulic brake wheel brake device is a dual- power hydraulic brake system . In 36/16t gantry crane manufacturing , carts Traveling with double output shaft of the motor (YZR180L-8, 11kW), both sides were assembled brake wheel (φ300 and φ200), wind brake and brake work by the two were often closed electro-hydraulic brake blocks to complete.