Hand Operated Rack Jack

Hand Operated Rack Jack

Jack is divided into hydraulic jack, mechanical jack and pneumatic jack. The hand operated rack jack is a kind of mechanical jack.

Rack jack is made up of rack, gear, handle etc. A rotating head is placed above the bearing rack to place the lifting load. When used, as long as the handle is shaken, the tooth will drive the rack up or down, so that the weight will rise or fall. Sometimes the lifting load can be placed on the side of the convex ear, but in this case, because the rack is subjected to eccentric loading, the allowable weight can only be half of the rated weight. In order to support the load that it holds, prevent the landing of gravity from being equipped with a safe rocker device.

Technical Parameter:

Attentions

1?Before using the jack, you should first check the reliability of the brake gear and the braking device, and to ensure that the top can be activated when the action.

2?The rack and gear of the jack shall be free of crack or broken teeth, the handle and all parts shall be complete, and the connection is correct and reliable before use.

3?Jack should be used to place the whole solid, the bottom should be paved with a solid pad to expand the support area, the top and the object contact should also be padded with wood, can prevent the weight was crushed, but also to prevent the jack when the pressure slip off.

4?When lifting the top, the jack must be placed vertically and does not allow overload to ensure safe use.

5?The lifting height of the jack shall not exceed the required travel.

6?When you drop the jack, you can not drop suddenly to avoid the impact of the internal structure of the jack and cause heavy vibration and overturning.

7?The rack, gear and other parts must be kept clean and tidy to prevent sand and dirt from blocking gear and rack parts, increasing resistance and reducing service life. The jack must be regular cleaning and oiling.