The crane refers to a multi -action lifting machinery of vertical improvement and horizontal handling of heavy objects within a certain range.Also known as Tianjie, Hanging, crane.Lets take a look at the performance parameters of the crane and how to maintain the crane!
Performance parameters of crane
1. The rated weight GN
The rated weight is the sum of the materials that can be lifted by a crane with a pourse or a genus (such as the quality of the grabbing, an electromagnetic cup, and the balance beam.
2. Total weight GZ
The total weight of the material that can be lifted by the crane can be lifted together with the quality of the piano and the long -term fixing the cranes (including the hook, the pulley set, the derived steel wire rope, and the other lifting materials below the crane car).Essence
3. Effectively starting weight GP
The valid weight is the net quality of the material that can be lifted by the crane.
Precautions for cranes
(1) Each crane must be rated with weight signs in obvious places.
(2) In the work, no one is allowed to transport people on the bridge.
(3) No testimony is not allowed after no testimony.
(4) The operation must be concentrated, not allowed to talk, smoke or do nothing.
(5) Clean the car on the car; no equipment, tools, flammable products, explosive products and dangerous goods are not allowed.
(6) The crane is not allowed to be used.
(7) The following situations are not allowed to be lifted: binding cannot be solid; the machine is overload; the signal is unknown; the stack;He is full of liquid items; the wire rope does not meet the requirements of safe use; the lifting mechanism has faults.
(8) When the crane runs on a line without obstacles, the hooks or brackets and the bottom of the hanging object must be more than 2m from the ground.If you cross the obstacles, you must exceed 0.5m high.
(9) For objects with a rated weight of 50%of the rated weight, two institutions allow two institutions to move at the same time; the objects with a rated weight of 50%can only be moved by one mechanism.
(10) Bridge cranes with main and auxiliary hooks. Do not rise or fall at the same time (special exception).
(11) Do not apply welding or hammer on the objects of being lifted and work under the object (when supporting).
(12) After power outage, it must be checked or repaired when the power outage is hung on the electric door.If you have to work with power, there must be safety measures to protect and have a special person in charge.
(13) Dont throw things down from the car.
(14) Limit switch and lock protection device should be checked frequently.
(15) Do not allow the use limit switch as a way to park.
(16) When there is a problem with a lifting brake, the lifting weight is not allowed.
(17) The hanging items are not allowed to run over people or equipment.
(18) When welding a certain part of the crane, the ground line must be set up, and the body should be used as the ground line.
(19) When the hook is at the lower limit position, there must be more than two rounds of safety rope rope on the roll.
(20) The crane is not allowed to collide with each other, nor is it allowed to use one crane to promote another crane to work.
(21) When the heavier items, liquid metals, explosive and dangerous goods, it must be slowly lifted away from the ground 100 ~ 200mm to test the reliability of the brake.
(22) The voltage of the lighting light for repair and inspection must be below 36V.
(23) All electrical equipment shells of the bridge crane should be grounded.If the trolley track is not welded on the main beam, the welding ground line measures should be taken.The ground wire can be used with a galvanized flat iron with an cross -sectional area than 75mm2 or a naked copper wire of 10mm2 or a galvanized round steel greater than 30mm2.The grounding position of the drivers room or the lifting body should be more than two places.The ground resistance between any point to the neutral point on the crane should be less than 4Ω.
(24) Pay regular safety technical inspections to do a good job of pre -inspection and pre -repair work.
Crane maintenance
1. Before the lifting and lifting equipment is out of the factory, you must make a good record.Safety inspection and maintenance before installation: Check the integrity of the main institutions of the equipment, check the visible defects of the main steel structure and connecting parts and its sales, and bolts, check the anticorrosive conditions on the surface of the equipment, form records, and issue installation opinions.
2. The lifting and lifting equipment is maintained and maintained by special personnel.After the equipment is delivered, the daily maintenance shall be responsible for the device operation driver or the full -time personnel of the use unit, and the installation of maintenance units shall have the obligation to supervise and inspect the daily maintenance content.The main content section of the daily maintenance is summarized as "cross operation method": clean, tight, lubricated, adjusted, and anticorrosive.
3. The lifting and lifting equipment should be regularly conducted.Regular inspections and maintenance during the use of equipment: Several maintenance and repair of mechanical equipment in the prescribed time are carried out as centered on cleaning, lubrication, adjustment, disintegration, and maintenance.It is generally completed by maintenance staff and operators.

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