Internal structure of the screw jack

The screw jack, also referred to as 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 excess weight by the thread self-locking function, and the framework is simple, however the transmission performance is low and the come back stroke is sluggish. The thread of the self-propelled screw jack does not have any self-locking action and is equipped with a brake. When the brake can be released, the weight could be quickly lowered by itself and the return time can be shortened, but the framework of the jack can be complicated. The screw jack can support heavy items for a long period, and the utmost lifting capacity has reached 100 tons, which is trusted. Following the horizontal screw is normally mounted on the lower part, the weight can be traversed at a little distance.

Principle useful:

The mechanical jack is among the types of manual lifting tools. Its compact structure makes reasonable usage of the rocking of the rocker to rotate the pinion. It really is operated by a pair of conical gears to drive the screw to rotate and press the lifting sleeve to ensure that the fat rises or decline.

Instructions:

1. Before use, it’s important to check if the jack is regular, whether the components are flexible, increase lubricating oil, and properly estimate the excess weight of the heavy object. Make use of a jack of appropriate tonnage and prevent overloading.

2. Adjust the technique of supporting the teeth on the rocker. First of all, turn the rocker directly in the clockwise path by hand to help make the lifting sleeve quickly ascend the very best weight.

3. Insert the handle in to the rocker hole, move the deal with along, and the fat will rise. When the reddish warning line shows up on the lifting sleeve, the handle should be stopped immediately. If you need to lower the teeth in the contrary Conveyor Chains direction, the fat will start to fall.

Precautions:

1. Always keep the surface of the machine clean, verify the internal structure regularly, make the pinion in the rocker flexible and reliable, and lift the lifting sleeve openly.

2. The friction surface between the lifting sleeve and the housing must be oiled anytime. Other oil filling holes should be lubricated regularly.

3. To be able to consider the basic safety used, avoid overloading, work with illness, it isn’t appropriate to make use of multiple units in order to avoid danger.