Load lifting equipment is actively used in various areas of human life. This is especially true for the repair of various equipment, including cars, both trucks and cars. In this article, we will consider an auxiliary lifting device called a hydraulic jack. Its main parameters and subtleties of choice will be discussed.
Purpose
The low hydraulic jack is designed and used for lifting, lowering and holding various objects in a given position. This unit was most widely used in the industrial sector, as well as in the repair and maintenance of cars at service stations, garages, and warehouses. In addition, a 3t hydraulic rolling jack is simply an indispensable thing during long journeys by car or bus, because thanks to it, for example, the task of replacing a punctured wheel is greatly simplified, and it takes a little time to complete it.
Pros and cons
It is especially worth noting two-rod hydraulic jacks. ATAmong the undeniable advantages that these irreplaceable assistants have are:
- Large load capacity relative to their overall dimensions. There are models that can lift up to two hundred tons.
- Optimum stability and rigidity of aggregates.
- Efficiency index within 80%.
- Ability to ensure smooth lifting and lowering of the load. Smooth running is provided by the viscosity of the oil.
- There is no need to apply much force to the control handle during operation, which makes it possible even for a woman to use the jack.
- Relatively cheap.
- Speed of bringing to full readiness for operation. To do this, the user will need to spend literally a few seconds.
The negative moments of the hydraulic jack can be counted:
- Maintenance required.
- Some design issues.
- Need to be stored and transported upright.
Device
The low hydraulic jack generally consists of the following main units:
- Fluid storage tank.
- Control handle that actuates the working piston and rod.
- Pressure valve. It is with its help that goods are lifted due to the use of the energy of the working fluid.
- Pressure relief valve. Its main function is to return the stem to its original position.
- Pump.
Highlights of work
The low hydraulic jack operates on the basis of Pascal's law. Due to the reciprocating movements of the control handle by the user, oil is supplied from the reservoir under the piston, thereby lifting the load. To lower it, open the relief valve. In general, the work of the jack is formed on the property of the relative incompressibility of the liquid, which ultimately allows you to generate the required pressure.
Also, one should not forget that the 3t hydraulic rolling jack does not allow exceeding the permissible load, therefore, it should only be used to lift objects with a weight not exceeding the specified load capacity.
Subtleties of repairs and typical breakdowns
Low hydraulic jack, although it is a fairly reliable unit, it still sometimes breaks down. The most common ones are:
- Lowering the rod spontaneously after lifting the load.
- Stem not returning to its original position.
- Not being able to lift the load at all.
Repair of the hydraulic part of the jack is often reduced to the replacement of seals and oil. There is no need to carry out any adjustment operations afterwards.
However, after the final assembly and oil filling, be sure to pump the jack several times. This is done in order to remove air from the system, thereby ensuringuniform movement of the rod, that is, the safe operation of the entire mechanism. The pumping process boils down to the fact that you will need to raise and lower the load several times, as well as hold it at maximum height.
Features of operation
The Matrix rolling jack is made in the form of a steel trolley on wheels, in which the working cylinder is located horizontally. In this regard, it becomes possible to provide the minimum possible pickup height, however, the jack itself must be placed on a hard underlying surface, since its weight is quite large. That is why these devices are actively used in industrial premises and car services, where the floor often has a hard concrete coating, which ensures the stability of the jack during its operation.
When choosing any existing jack, first of all, you should pay attention to the indicators of its carrying capacity, pick-up height, rod stroke.
