Forklift truck hoisting system repair

Ask heavy system technology. Door frame should be no cracks, defects should not affect the strength, rigidity, deformation amount shall not exceed the allowable value of design. The door frame generally use the overlapping structure. Inside and outside the door frame should be with a good, flexible slide, no blocking phenomenon.

The guide pulley rack should be installed in the correct and reliable. The pulley and the pulley shaft should be free of cracks and defects, wheel groove wear amount shall not exceed the original design thickness of 10%, and the guide pulley rack with appropriate, flexible and reliable rotation to make the pulley. Chain specifications should be consistent with design requirements. Chain plate and the shaft should be no cracks and deformation, and maintain a flexible and reliable transmission.

The gear frame wheel frame should be intact, no cracks, and the portal frame with good, can in the door frame, a flexible sliding smoothly without jamming phenomenon. Surface of the guide wheel frame beam should be flat, smooth, stable and reliable to fork lateral movement. Fork should have sufficient strength and rigidity, and the guide wheel frame beam with good. Attachments shall be fitted with a protective frame of general framework of flat steel, and to maintain the integrity and no distortion. The door frame and the tilt cylinder and the frame shall be connected firmly, with a good, reliable lock, flexible rotation.

The door frame can not have deformation and welding sparks, door frame and the door frame, with the frame and the inner frame is relatively smooth ascending and descending. The door frame and the roller clearance shall not be greater than 1.5mm, the sliding good without jamming. Roller rotation should be recorded live, roller and shaft should be no cracks, defects, wheel groove wear amount shall not be greater than the size of the original 1O%. Two hoisting chain tension should be uniform, no distortion, end the connection is firm; the chain pin shaft and the clearance of bearing holes shall not be too large. Sprocket rotation should be flexible, groove depth of no more than the original size of the 0.5mm; the gear frame shall have serious deformation, weld the welding phenomenon.

Fork surface shall not have cracks, each weld shall not have sparks. The fork root angle of not more than 93 degrees, the thickness shall not be less than the size of the original 90%; the left and the right fork tip height shall not exceed the fork length of horizontal section 3%; fork positioning should be reliable, a bearing surface and a positioning fork hook surface without obvious defects; fork and genus clearance with frame should not be too large, and move smoothly.

Wear and tear parts and maintenance. In the use of forklift, fork of the dangerous section of common upper elbow and fork and the vertical sections of the hook on the vertical portion of welding in the vertical section near the lower part, dangerous position is extremely easy to produce fracture. In particular, forklift truck manufacturers‍ drivers often illegal operation, used alone side fork front-end lifting or sharp pick goods on the ground, leading to the fork or fork sharp bending deformation, even (cargo overloaded) vertical section of root and broken consequences will cause serious economic loss.

Maintenance of the common fork of forklift truck. According to the national standard, the fork usage should be checked annually; used in the harsh conditions of forklift need more frequent inspections, to detect any defect or permanent deformation, take the relevant technical measures, so as to eliminate the hidden trouble of safety. For inspection by the professional and technical personnel of electric forklift trucks‍ fork fork produces, found signs of impede the safe use of the failure and obvious deformation of any defect, must stop, and only after rigorous repair, and after test acceptance qualified rear can use.

Fork the surface crack (especially the fork root, hook, hook and under vertical segment junction), once found, the height difference between the two fork tip, more than the length of horizontal section 3%, fork must stop using. Use must also ensure the positioning pin in well maintenance and normal condition in situ, if any fault, fork must stop before the good repair. Should be regularly checked thoroughly wear degree fork horizontal section and vertical section, especially the fork root, if the thickness is reduced to the original 90% should also stop using. The hook on the support surface fork and positioning hook under the surface wear, the backlog and other local deformation, increased gap between the fork and the fork, must repair before use.

In the absence of conditions, fork breakage is best replaced with new parts, not allowed to improvise to use, even if the fork after repair welding, only through the strict technical standard test, to achieve the original specification requirements, can be put into use.‍