Roland ShufflebottomApril 24, 2017TechnologyComments Off on Choosing the right gearbox
Choosing the right gearbox might be a daunting task as there are hundreds of models manufactured each year. However with common sense industry owners can choose the right type making the task easier. The idea of customized gearbox ensures that the exact type is made for the industry. The right type of gearbox repair and service enterprise can also be consulted to for the best outcome. Some tips in this regard are as follows:
What is the actual requirement?
This is a first and foremost question which is to be asked. There are many factors associated with this question. Some of them are as follows:
Input and output requirement
If any specific need is to be catered by the gearbox?
Pre-manufactured or customized gearbox is needed?
Once the requirement is fulfilled then it is relatively easy to choose a gearbox with right specifications keeping in view the quality as well.
It is also one of the factors worth considering. Gearboxes today come with a motor which increases the efficiency of the unit. Here the industrial owners must answer the following questions:
What should be the overall efficiency value?
If the motor with gearbox fulfills the efficiency requirement?
If torque range is required for maximum efficiency?
What should be the gear size?
Gearbox is the best power transmission concept of the world and therefore heavily influenced by an efficiency factor. If this factor is what the owners know completely would lead them to the best unit.
Installation and location factors
Only purchasing the unit which matches the industrial requirement is not enough. There are several installation and location factors which are to be considered in this regard. Some factors are as follows:
Which facility space is dedicated for installing the unit?
How would the noise level be catered?
What should be the weight of gearbox?
Are the operating temperature variations huge or not?
The installation depends upon other factors which can only be judged once the installation place is visited. The above ones can be considered as most generalized questions.
Cost reduction factor
Without deciding this factor the overall process is just waste of time. It influences the purchase decision and therefore should be considered beforehand. There are 2 main types of gearboxes that are being manufactured currently. Both are explained as under:
Bronze gearboxes: These are manufactured as per needs and application requirements. The size also varies as it depends upon the industry for which it is being manufactured.
Powdered metal gearboxes: These are low-cost units which are generally not used. The main reason is that these are known for their poor performance. The reduced load handling capacity does not make it a good idea for any premises.
Plastic gears are also being manufactured but again it depends upon the need and which industry will be using the unit. The simplest tip is to always choose a credible supplier with a strong after sales service network. It will ensure that the owners never get into any issue at all.
Roland ShufflebottomApril 10, 2017TechnologyComments Off on Why experienced travelers use VPNs
In the 21st century, packing has faded into the background for those who prepare for a trip. Although it may sound funny, people now care way more about ‘tuning’ their mobile phones, tablets or any other devices to bring with them while traveling. The most common apps typically downloaded and used by users on the move are offline maps, travel guides, currency converters, translators and, of course, something for entertainment. Sadly, just a few would consider setting up a VPN or even try googling some useful info on the topic. In fact, not only it is vital to get aware of the need to use a VPN, it is also important to choose a solution that perfectly suits your needs. To do so, you have to monitor reliable online sources, preferably containing user feedbacks and detailed VPN service reviews like on AntaNET for example where access to the latest information on VPNs is provided, as well as objective ratings and professional recommendations.
We live in the era of limited privacy and cyberattacks that now happen in the airports alongside the other unpleasant incidents. Just remember how often you surf the Net while being on a train or simply connecting to a hotel Wi-Fi: checking your bank account balance, sending emails – a thousand chances to get attacked by cybercriminals! It is so easy to switch on your VPN every time you connect to a public network to stay safe! And what do you get in return?
All your financial transactions are secured. You can harmlessly go ahead and book accommodation with the credit card or do a money transfer from your saving account to the travel account. Of course, the connection can be slow sometimes, plus a VPN is likely to make it even slower, which may stop you from keeping to online safety measures. In such cases, it is strongly recommended to postpone important financial deals till the moment you access a secure connection. Also, do not forget to check the VPN connection status when Wi-Fi tends to drop.
What travelers truly love about VPNs is an opportunity to book cheap flights when prices differ from one location to another. As a rule, ticket prices are determined by an algorithm in which the location is one of the determining factors. Changing the IP-address via a VPN, you can literally choose your price – just select the server located in the “right” country.
Indeed, your location matters a lot! There are many countries where popular websites are blocked, which is why travelers often access a VPN first, when surfing the Internet in Thailand, Portugal or Vietnam. For example, there is no other way to watch Netflix than switch on your VPN. In addition, a VPN is a must-have for bloggers who can otherwise disappear for a few days without access to their own blogs: a VPN will help bypass censorship set by many governments in the world (just remember the Great Firewall of China).
To choose a proper VPN that can be used during frequent trips, it is worth analyzing the following criteria:
Device compatibility: a good VPN service must match all the devices you have, independently of the operating system and the device type.
Speed: Mind that free VPNs usually cut the connection speed considerably.
Multi-connectivity: a good VPN allows connecting several devices at a time.
Installation: the easier, the better.
Territory coverage: the VPN should work in as many countries as possible.
Autoconnect feature: this is perfect when you tend to forget about protection measures – the feature can be configured to switch on automatically either for all networks or at least for unsecured ones.
So, the main parameters include boom length, radius and height of the cargo hook load capacity, load moment, the speed of lifting and lowering and rotating the rotary part of the crane.
Boom length is the distance (in meters) between the centers of the heel axis and the axis of the boom head blocks. Boom length and its angle on the inclination to the horizon defines teh reach and hook height.
Departure load hook – the distance (in meters) from the axis of rotation of the crane to the vertical axis passing through the center of gravity of the lifted load (bottom block). Free flight hook – the distance (in meters) from the edge of tipping to the vertical axis passing through the center of gravity of the lifted load.
Hook height – maximum height to which you can raise the hook above the platform on which the crane at the operating position of the boom.
Roland ShufflebottomMarch 17, 2015TechnologyComments Off on Industrial Physics: The Might Of Ultrasound
Ultrasound is commonly acquired through mechanical, piezoelectric or magnetostrictive transducers. A simple example of mechanical oscillator is a well-known whistle. It sounds excited by the fact that the air jet is broken on the inside edge of the whistle cavity. Recurring vortices excite vibrations of the column of air which is in the cavity of the whistle. The dimensions of the cavity determine the natural frequency of the column of air, and hence the frequency of the emitted sound.
The smaller size of the cavity, the higher the sound. By reducing the size of the cavity, we can ensure that the whistle will start making sounds of high frequency – ultrasound. Sirens are based on another principle: the motor rotates the disk (rotor) with openings at the edges. The fixed disc (stator) also has holes somewhat smaller in diameter than a rotor indent. A jet of compressed air supplied to the siren, periodically interrupted by a rotating disk. As a result, the outlets of the fixed plate there are periodic air pressure change, generating a powerful ultrasound.
In electromechanical emitters ultrasound is produced as a result of transformation of an alternating electric current oscillations corresponding frequency mechanical vibrations of the radiator. Piezoelectric transducer apparatus based on piezoelectric effect. Crystals of a number of substances (quartz, tourmaline, barium titanate, and so on. D.) have a remarkable property. If one plate is cut in a certain way, then the compression or tension of such a plate on its surface electric charges will have positive and negative sides (thus forming piezoelectric effect, reversible by its nature). If the cover plate on both sides is made of the metal electrode (e.g., aluminum foil) and attached to the AC voltage source, the plate is alternately compressed, then stretched. These oscillations of the plate surface excite ultrasonic waves in the medium. Using piezoelectric transducers, it is possible to obtain a relatively small intensity of ultrasound.
Some ferromagnetic metals (nickel, iron, cobalt and others.) and their alloys have the property to expand or shrink under the influence of the magnetic field. This phenomenon is called magnetostriction, is used to obtain high-intensity ultrasound in a magnetostrictive radiator.
The simplest magnetostrictive transducer – is, for example, nickel rod inserted into the coil, which surface energises an alternating current, which results into emergence of alternating magnetic field in the stroke rod and its variations are periodically compressed or expanded, performing mechanical vibrations.
The industrial use
The incredible power of ultrasound is successfully applied in a wide array of industries – from large machinery assembling enterprises to medicine and air decontamination. The industrial enterprises oftentimes integrate ultrasound cleaning into their pipelines to speed up the processing procedures. The largest ultrasound-focused businesses, like UK-based Hilsonic, offer a comprehensive line-up of high-tech ultrasonic cleaners for a variety of purposes (despite the relatively high cost of the equipment, it almost inevitably pays for itself in the long run). (more…)