Article List

• Knowledge about Gantry crane

  Generally used for outdoor, use leg to replace the rail beam, mainly used for outdoor yard, yard, bulk cargo handling operation. Its metal structure is like a portal frame, which carries two legs under the main beam, which can walk directly on the earth's orbit. The two sides of the main beam can ha

  Dowellcrane News April 20, 2018
• Principles and Applications of Common Electrical Components for Cranes(二)

  5, buttons,In practice, the button is usually selected based on the number of contacts required, the occasion and color used. The commonly used series buttons of LA18, LA19 and LA20 are applicable to AC500V, DC440V, rated current 5A, and control power in AC300W and DC70W control circuit.Button text

  Dowellcrane News April 13, 2018
• Principles and Applications of Common Electrical Components for Cranes

  Circuit breakers, contactors, intermediate relays, thermal relays, pushbuttons, indicator lights, universal transfer switches and limit switches are the eight most common components in electrical control circuits. The principles and applications of commonly used electrical components are described h

  April 10, 2018
• How to ensure the stability of gantry frame?

  In the supervision and inspection, it is found that the gantry frame used in the construction site has various hidden troubles that affect the stability of the frame, and the main problems are as follows:1. Due to the lack of drainage measures in the foundation of the gantry frame, there is often wa

  Dowellcrane News March 30, 2018
• The arm crane uses maintenance rules

  Cantilever crane dynamics is light, crane is by the post, rotating arm of rotation drive and electric hoist project manufacturing, post firmly in the concrete below the root, the cycloidal pinwheel reducer to drive cantilever hanging back, electric hoist to straight lines on the cantilever beams, an

  Dowellcrane News March 23, 2018
• The top ten common sense of hoisting machine operator!

  Every year, due to carelessness, mistakes in operation, and lack of common sense in lifting industry, how can we reduce or even avoid tragedy?I have summarized the common knowledge of ten hoisting machine operators:1. Safe positionDuring the lifting operations, under the boom, hanging down, suspende

  Dowellcrane News March 16, 2018
• Method of assembly of gantry crane door frame

  1. Before the combination of the door frame, the size and assembly number of all components shall be checked, and the combination surface of each joint web shall be cleaned, and local deformation shall be processed to ensure the combination quality of the door frame.2. The upper and lower beam, the

  Dowellcrane News March 09, 2018
• Technical guidelines for lifting mechanical hooks

  1. The crane shall not use casting hooks;2. It is strictly forbidden to repair welding with the hook;3. The surface of the hook should be clean, and there should be no crack, sharp Angle, burr and crack;4. The hook shall have an anti-stripping device; The pawl should not be opened when the hook load

  Dowellcrane News March 03, 2018
• What are the composition of ordinary bridge cranes?

  Ordinary bridge crane is generally made up of crane trolley, bridge running mechanism and bridge metal structure. Lifting trolley is made up of three parts: lifting mechanism, trolley running mechanism and trolley frame.The lifting mechanism includes motor, brake, reducer, reel and pulley block. The

  Dowellcrane News February 24, 2018
• Scrapping standard and maintenance of crane pulley block

  The pulley block is a simple machine assembled by several movable pulley and fixed pulley, which can save energy or change the direction of force. The labor force of the pulley block is determined by the number of the rope, and its mechanical efficiency is determined by the gravity of the object bei

  Dowellcrane News February 09, 2018