What better jack - study of species diversity

jack What better than to feature a choice?

Construction jacks of various types are widely used in many industries, in the industry, to carry out some installation and maintenance work.This mechanism, which is designed for lifting and fixing of various cargoes at a certain height.This article tells about how to select the jack.

So, the first thing you need to understand what are the jacks.According to the device and the principle of action lifts can be divided into three types: screw, rack and pinion, hydraulic.Each of them performs a set of operations, and the choice that's about it worth remembering.If

describe the purchase of this tool in a few words, first you need to determine the amount and frequency of work, and then to the device type and its level of professionalism.After overpay for unnecessary features, and then still find that your problem is just the device can not perform, it will be very disappointing.

screw and pinion jacks - what is it?

screw jack building

different from other load-lifting mechanisms for the fact that its operating member is a screw, which is driven by a rotation of the handle.From the direction of rotation of the handle will depend on: the screw will raise or lower the load.

the screws using special hinges attached cup.Also, some screw jacks are equipped with skids, with which you can move the lifted load horizontally.This type of device is used for any kind of linear movement of cargo, which require a large pressure forces.

Screw mounting jacks are both advantages and disadvantages.The advantages include a small force is applied to the actuating arm.Significant stroke, large lifting height and a small own weight made this kind of jacks quite popular.Small support area, large size and lack of stability is a disadvantage of this type of devices.

workers node rack jacks is a steel rake with located on it gruzoopornoy bowl.They are widely used for pre-fixation of goods and their further movement in construction, installation and repair work.Such mechanisms are also used for lifting loads with low intercepting.

high efficiency, easy operation, smooth running - the main advantages of rack jacks.Almost the only drawback - a large size and weight.

Hydraulic devices - much different from the others?

Hydraulic jacks are used in the construction of the most widely used.They are divided into the bottle and podkatnye.Their work is based on the movement of the piston.The lever actuates the pump, which pumps hydraulic fluid into the cylinder through the valve, and the fluid in turn pushes the piston.

These devices are widely used in the installation and construction work in the aftermath of emergencies and disasters.They are distinguished by stability, rigidity, compact, precise fixation load at the correct height.Their disadvantages are the small lift speed and low stroke.

Before using a jack of any type, you must make sure of serviceability of all components, lubricate and replenish the working fluid if necessary.Selecting a jack determine its basic performance characteristics, namely: maximum load, the height of lifting, pick-up height, stability, force applied on the handle, size and weight.

Almost all of these criteria corresponding to a maximum hydraulic jack, so it probably is the most common.But at the same time it is not versatile, because it can not be used, for example, to raise scaffolding.

Before choosing the lifting device you need to decide why you need a jack, and what works with it will be carried out.Before you choose a jack and buy it, you must make sure that it is a reliable and high-quality mechanism, as may depend on someone's life.