Internal structure of the screw jack

The screw jack, also called the mechanical jack, is driven by a manpower through a screw pair, and a screw or nut sleeve can be used as a jacking member. The ordinary screw jack supports the fat by the thread self-locking function, and the framework is simple, however the transmission effectiveness is certainly low and the come back stroke is sluggish. The thread of the self-propelled screw jack does not have any self-locking action and has a brake. When the brake can be released, the weight could be quickly lowered by itself and the return time can be shortened, however the framework of the jack is usually complicated. The screw jack can support heavy items for a long time, and the maximum lifting capacity has reached 100 tons, which is widely used. Following the horizontal screw can be mounted on the low part, the weight can be traversed at a little distance.

Principle useful:

The mechanical jack is one of the types of Screw Vacuum Pump manual lifting tools. Its compact framework makes reasonable use of the rocking of the rocker to rotate the pinion. It is operated by a pair of conical gears to drive the screw to rotate and drive the lifting sleeve to ensure that the weight rises or decline.

Instructions:

1. Before use, it is necessary to check whether the jack is normal, whether the parts are flexible, increase lubricating oil, and correctly estimate the pounds of the large object. Use a jack of appropriate tonnage and avoid overloading.

2. Adjust the technique of supporting one’s teeth on the rocker. First of all, turn the rocker straight in the clockwise path by hand to help make the lifting sleeve quickly ascend the top weight.

3. Insert the handle in to the rocker hole, move the handle up and down, and the excess weight will rise. When the reddish colored warning line shows up on the lifting sleeve, the handle ought to be stopped instantly. If you need to lower the teeth in the opposite direction, the fat will begin to fall.

Precautions:

1. Often keep the surface of the machine clean, examine the internal structure frequently, make the pinion in the rocker versatile and reliable, and lift the lifting sleeve openly.

2. The friction surface between your lifting sleeve and the casing must be oiled at any time. Other essential oil filling holes should be lubricated regularly.

3. In order to consider the basic safety in use, avoid overloading, use illness, it isn’t appropriate to make use of multiple units to avoid danger.