Also known as mechanical jack screw jack is determined by human through the screw vice transmission, screw or nut sleeve as jacking member. Jackscrew long-term support heavy loads, maximum weight reached 100 tons, lower loading level screw back, but also to make weight for a small distance traversed. Jackscrew main main frame, the base, the size of a pair of bevel gears, screws, nuts, lifting the sleeve, thrust bearings, ratchet arm Lajiao etc. combined group consisting of carrying rack on top of a rotating head, used to place lifted l load. When used, as long as the rocking lever, the teeth of the rack will be driven up or down, in order to achieve a weight increase or decrease. Sometimes lifting load can be placed on the side of the lug, but in this case, since the rack is being affected by the eccentric load, so that its weight is only allowed to move one half the nominal weight of the screw jack lift mechanical principle, After reciprocating lever handle, pull push the ratchet claw rotary gap, bevel pinion driven large bevel gear, so lifting screw is rotated, so that the hoisting or lifting the sleeve to get down to achieve the purpose of lifting tension. Specifications QL Series screw jack: 2t, 3.2t, 5t, 8t, 10t, 12.5t, 16t, 20t, 32t, 50t, 100t model from the weight (tons) lifting height of not less than ≮ (mm) minimum height of not more than ≯ ( mm) handle operation force of not more than ≯ N QL3.2 3.2 110 200 100 QL5 5 130 250 160 QL8 8 140 260 200 QL10 10 150 280 250 QL16 16 180 320 400 QL20 20 180 325 500 QL25 25 130 275 600 QL32 32 200 395 650 QL50 50 250 452 800 QL100 100 200 452 600 QL200 200 220 472 600 QLD10 10 75 200 250 QLD16 16 90 225 400 QLD32 32 150 320 650 QLD50 50 150 320 800 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/