Rack jacks, also called gear strip mechanical jack or hand across the top, suitable for railway vehicle maintenance, bridge installation, mining, construction and engineering support, and vehicles, equipment and other heavy lifting purposes, has a simple structure, Easy to use, safe and reliable little, is a broader lifting tool applications. Mechanical jacks structure: a square head flat key cover 2. 3. 4. rocker small bevel gear pinion 5. 6. 7. elevating screw nut copper sleeve 8. 9. 10. large round flat bevel gear 11. 12. A key thrust bearing housing 13. The base works: mechanical jack is a kind of manual lifting one of the tools, compact structure, reasonable use of the rocker swing, the pinion gear rotates, the co-operation of a pair of bevel gears to drive the screw rotates, pushing lifting the sleeve, so the weight up or down. Usage: 1. must be checked before using the jack is normal, the components are flexible, add oil, and correctly estimate the weight of heavy objects, choose the appropriate tonnage jack, avoid overload use. 2. The method of adjusting the rocker stays on the teeth, first hand joystick directly rotates clockwise, so that the rapid rise sleeve top heavy lifting. 3. Insert the handle into the rocker hole, moving back and forth up and down the handle, the weight increases. When the red line appears on the sleeve when the lift should immediately stop moving the handle. To decrease when adjusted to hold the teeth in the opposite direction, the weight began to fall. Note: 1. keep the body surface clean, periodically check the internal structure is intact, the pinion inner sleeve rocker flexible, reliable and lifting movements with ease. 2. Lift the friction between the surface of the sleeve and the housing must always be oiled, other injection hole should be periodically lubricated. 3. In order to take into account the use of safe, avoid overload, work sick, not long on station uses to avoid danger. The main parameters: Model KD3-5 KD7-10 rated maximum weight T 5 10 top rated maximum weight T 3 7 Kua maximum lifting height mm 200 250 feet lowest collapse destroyed the top position mm 60 70 mm 260 320 roof top position lowest position mm 520 630 mm 720 880 Roof highest position weight kg 18.5 30 welcome all over the world, far apart friends to negotiate business, Haobo mining willing to work with you hand in hand to create a better tomorrow. Contact: Mr.Tang Mobile phone: 15589715136 QQ: 877995102 Tel: 0537-2782188 Fax: 0537-2789995 E-mail: 877995102@qq.com Company Website: http: //www.qidaoqi.com/