Advantages of Hydraulics

Compared with mechanical transmission, electrical transmission, hydraulic transmission has the following advantages.

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1. hydraulic transmission of various components, can be easily and flexibly arranged according to the needs.

2. light weight, small size, small inertia of movement, fast response time.

3. easy to manipulate and control, can achieve a wide range of stepless speed regulation (speed range up to :1).

4.Overload protection can be realized automatically.

5. generally using mineral oil as the working medium, the relative moving surface can be self-lubricated, long service life.

6.It is easy to realize linear motion

7. it is easy to realize the automation of the machine, when using electro-hydraulic joint control, not only can realize a higher degree of automatic control process, but also can realize remote control.

Disadvantages of Hydraulic Pressure

Here are some disadvantage of hydraulic:

1.The efficiency is low because of the resistance of fluid flow and the large leakage. If not handled properly, the leakage not only pollutes the site, but also may cause fire and explosion accidents.

2.Since the working performance is easily affected by temperature changes, it is not suitable to work under very high or very low temperature conditions.

3.The manufacturing precision of hydraulic components is required to be high, thus more expensive.

4. because of the liquid medium leakage and compressibility, can not get a strict transmission ratio.

5. hydraulic transmission failure is not easy to find the cause; use and maintenance requires a high level of technology.

Joint Installation

The hose shall not be over-bent in moving or at rest, nor shall it be bent at the root, but at least at 1.5 times its diameter.

the hose shall not be pulled too tightly when moving to the extreme position, and shall be relatively slack.

avoid twisting deformation of the hose as much as possible.

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the hose should be kept as far away as possible from heat-emitting elements, with insulation plates if necessary

External damage to the hose should be avoided, such as long-term friction with the surface of the components in use.

If the self-weight of the hose causes excessive deformation, there should be support pieces.

Piping installation

All hydraulic pipes can be acid cleaned before installation, especially the steel pipes connected with pipe fittings should be acid cleaned first, and then the ferrules should be fastened in the pipe end in advance.

All pipe joints should be cleaned with kerosene before installation, and the o-ring inside should be temporarily removed for storage and put on again when formally installed.

During construction, keep the oil ports of hydraulic pumps, distributors and other equipment, pipe joints, pipe ends and other openings clean, and do not allow water, dust and other foreign objects to enter.

The pipeline should be laid in a free state, and the welded pipeline should not be forcibly fixed and connected by exerting excessive radial force.

The oil hole of the bearing seat should be checked in advance, whether the internal oil circuit is smooth and whether the thread of the oil port matches with the joint.

Pipeline Cleaning

In order to ensure that the lubrication system is clean, and supply the bearings of machinery and equipment with clean grease, the pre-installed pipeline must be removed and cleaned. There are two kinds of cleaning: kerosene cleaning and acid cleaning.

Kerosene Cleaning Objects and Methods

Cleaning objects: copper and stainless steel pipes.

Method: 1.pre-installation has been pickled before, and now the inner wall of the steel pipe without rust, iron oxide; 2.in the pre-installation of dirty pipe joints; 3.the need to clean the pipe and the joint removed, the pipe with a cloth (to not fall off the lint yarn) dip in kerosene to wipe the pipe clean, both ends and the joint soaked in kerosene cleaning, and then the pipe is coated with machine oil or filled with grease, both ends sealed well to be installed; 4.after cleaning there must not be visually Visible pollutants (such as iron filings, fibrous impurities, welding slag, etc.), pay special attention to the inner wall of the weld slag must be thoroughly cleaned.

Pickling Objects and Methods

Object of cleaning: Steel pipe that has not been pickled before pre-installation; steel pipe that has been pickled but now has serious rust.

Method. 1.Use degreasing agent to remove the grease adhering to the pipeline; 2.Remove the dirt on the pipe with clean water; 3.Remove the rust spots and rolling iron chips on the pipe wall in the pickling solution; 4.Rinse the adhering materials produced in the above operation with clean water, and rinse the inside of the pipe with high-pressure water; 5.Neutralize the residual acid on the pipe with alkali solution; 6.For effective drying the pipe should be immersed in hot water or steam drying 7.Check the pipe after pickling to see if it is clean; 8.Seal the opening of the pipe with plastic or plastic tape immediately after pickling to avoid the intrusion of foreign matter and water.

Advantages and disadvantages of different conveyor systems

In our previous article we gave an overview of the most common conveyor systems on the market – belt conveyors, roller conveyors and powered roller conveyors which are all floor conveyors, and we also had a look at overhead conveyors. Now, let’s take a closer look at the advantages and disadvantages of these different conveyor systems. Hopefully it will be helpful when choosing what conveyor best suits your needs.

1. Belt Conveyor System

Advantages

• One of the cheapest conveyors
• Simple and easy to use
• Can have changes in elevation
• Can be loaded from any place along the belt

Disadvantages

• The simplicity means very limited features
• Belt can be difficult to clean and generally does not leave a very successful result
• Sticky material can get stuck on the belt and transfer to the return side, the rolls, idlers and pulleys

2. Roller Conveyor System

Advantages

• Can use gravity for moving the product on a decline angle
• No power means less cost and more environmentally friendly
• Quite modular andcan be utilized in many ways
• Fairly low maintenance

Disadvantages

• Products may end up being damaged when moved by gravity
• Heavy and therefore not very portable
• No control of conveyor speed

3. Powered Roller Conveyor System

Advantages

• Effective horizontal transportation over a longer distance
• The speed and also the process can be easily controlled and the risk for damage is reduced as the parts never touch
• The small zones of the system are powered independently and can be set up to run only when an item is present
• If a motor breaks down, it will only stop one zone

Disadvantages

• Noisier than many other conveyors
• More expensive than other conveyors
• Not as flexible with what type of items it can handle

4. Overhead Conveyor System

Advantages

• Can utilize the space overhead maximizing the full capacity of a facility
• Buffer stores of serial produced components can be stored and sequentially delivered to a pick point when required
• Full production systems can be created in a friction drive overhead conveyor using multi drive technology offering speed differentials
• Lower operating costs and known for being very safe

Disadvantages

• Generally more expensive than a floor based conveyor system
• If breaking down, it can be more challenging to repair if no foresight at the planning stage and installation for maintenance
• If chain based, it tends to need continual lubrication meaning grease or oil might drop from the system

As you can see, there are pros and cons for each conveyor system. One of the most important things to consider is therefore your specific business and the type of material you wish to transport. Some of the material’s characteristics to consider are size, weight, and density. But key considerations should also be the size of the system compared to the size of your facility as well as the environment itself – temperature, humidity and vibration for example. Feel free to contact us and we’ll help you determine any potential risks and possible countermeasures in order to create the safest and most effective environment.

Previous articles:

How does a friction-based overhead conveyor system work?
Advantages with a friction-based overhead conveyor system
Different types of overhead conveyor systems 

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