Gantry Crane and Trolley Mechanisms Explained

The most common gantry cranes feature two supports. One of the pillars can be rigidly connected to the axle (rigid or spatial support), and the other one is hinged (flexible or flat feet). In gantry crane with a span (distance between the crane rails) of less than 25 m both bearings are hard. Track each of the pillars of heavy crane (lifting capacity of 1,000 tons or more) may consist of two or more rails (undercarriage in this case have the spatial equalizer suspension). In some cases the rails are placed at different levels of support at different heights. The semi-crane design implies the bridge resting on one side of runway, and the other one – on the support legs. Trucks are moving the bridge crane. The mechanism of the trolley as lifting mechanism can be mounted on a trolley (autonomous trolley) or on a metal bridge structure. Lifting mechanism is oftentimes mounted on the metal, and a truck equipped with a movement mechanism. Gantry crane has a metal structure: mechanisms of lifting cargo, the trolley and crane movement. Grab cranes are equipped with a special gripper and winch mechanism in the presence of lifting mechanism circuit grapple. If there is a need for orientation of cargo, the carriage is provided with a rotatable part as steel truck cranes.

Trolleys mechanism

The weight of cable trolleys considering the weight of cargo and towing winch accounts for 5-10% of weight of the nominal load. The cable trolleys are used only by cranes of group mode of 1K – 3K, since rolling cargo rope pulley block on blocks significantly increases the resistance of the trolley, which leads to accelerated wear of the rope. To prevent excessive sagging hoist rope it is necessary to increase the mass of the cargo suspension. Suspension trolley for these cranes is typically produced in two type: monorail and double rail.


At monorail cable trolley to reduce bending moment, bending monorail suspension frame blocks are made with spherical support elements. In addition to the limited life of the monorail, an unsustainable position of the truck cab and in the transverse direction. Lateral swinging carts and mobile booths, which can not be rectified using the thrust rollers adversely affect the working conditions of the crane. In the event of lateral loads on the trolley or in case of eccentricity in mechanisms to traverse when lifting cargo pressure rollers have an impact on the bottom chord of the bridge. In some cases, the design implies additional monorails, which increases metal consumption structure. This solution is widely applied in case of heavy loads and work on sophisticated sites, the design is practised by such industry innovators as Granada Material Handling, gantry hoist and overhead crane manufacturing experts supplying the demand across UK and EU markets.

Double rail

The most common type of cranes implies trolleys moving on rails laid on the lower belt. The frames of these trucks ensure uniform load distribution on rail guides. When using trucks with cargo winches at one end of the frame the hinge connection for crossbeam carrier racks with running wheels is hinged. The cable trolleys cross member is attached to the end of a beam on with the pulleys. In this case, the reduced height of the trolley, which allows the frame of beams running wheels mounted on the ends of the axis of the crossbar. To improve the layout of joints resistant to the bridge, in the small-sized motorized vehicles gears are used or gear movement is performed with central drive.

Ultrasonic processing of metal in action

In the modern field of metalworking, mechanical method of working with steel alloys is constantly evolving. However, technological progress contributes to the emergence of new, high-tech materials that can hardly be subjected to mechanical stress. Therefore, many productions began to switch to a completely new, high-tech treatment. Ultrasonic machining is a decent example of a modern technology that can not only solve complicated manufacturing tasks, but also be cost-effective. The article is prepared in collaboration with Hilsonic experts, representing the ultrasound technologies-focused company, known for the ultrasonic cleaner lineup in the local UK market.

Ultrasonic method of processing is one of the varieties of slotting material handling. The removal of the surface layer with the product is carried out through the emergence of micro cracks under the influence of ultrasound vibrations. The main primary quality of ultrasonic treatment in metals considers the possibility of working on a non-conductive material and an opaque type. As well as the positive characteristics of this method of working with materials, one can designate the absence of residual stress at the end of the working process, which can cause formation damage (cracks) to the product surface. Sonication method is used when dealing with fragile components such as agate stone, plaster-based materials, diamond products and gypsum elements. Continue reading Ultrasonic processing of metal in action

The Importance of Word Of Mouth in B2B

According to statistics, 66% of Americans are always talking mention brands when they praise, criticise or recommend any products or services. This is nothing but old, good word of mouth. Andy Sernovits, the author of Word Of Mouth Marketing says that today there is no question about whether you want to have something in common with word of mouth or not, as you are already a part of the game, even if you do not know about how it works. Your company is likely to be discussed on the internet, and the main problem is not the negative reviews, but the fact that you do not participate in this process, and therefore you simply cannot manage it.

The WOM way

Word-of-mouth marketing (sundresses marketing or marketing of mouth-to-mouth) – is an alternative marketing strategy that motivates consumers to dialogue about products and services. WOM-marketing takes place through a variety of online and offline tactics, often using agents of influence and communities.

The varieties include word of mouth marketing, viral marketing, marketing conversations, evangelism, hidden marketing, marketing and community marketing. Andy Sernovits offers an interesting concept as for determining WOM-marketing, he writes that there is b2b and b2c, and WOM – it b2c2c. According to him sundresses marketing is nothing but C2C: consumer-to-consumer (from the consumer to the consumer), because its essence lies in the talk of ordinary people, which occurs by itself.

We’re all plunge into such talks and discuss a variety of companies and their products – when looking for a new phone, a car, an apartment, a hairdresser choose or think what to call the restaurant for dinner.

And these discussions have a big impact on us. According to Nielsen survey, which was attended by 29,000 respondents from 58 countries, 84% of them voice their most trusted opinion about products and the companies that they have heard from their loved ones and friends. This figure is confirmed by the fact that all of us have a psychological feature – we give an increased trust to the opinions of close people .

Therefore, word of mouth is a natural process, and nobody can escape it. Although it is hard work, WOM can be manageable; in this case it aims to ensure that in the course of such discussions, people refer to your brand so the business has the maximum positive impact.

How to use word of mouth for the benefit of yourself?

Today, thanks to the Internet word of mouth has become global, the brands are discussed publicly and openly, and most importantly – honestly. Consumers simply describe the experience with a product or service, which can be negative or positive, and it is hardly predictable who will give the first review – an angry or grateful client.

That is why you need to be aware of everything that is said about you online. A constant monitoring of reviews, comments on social media, testimonials on specialised platforms is an integral part of efficient WOM marketing management. Usually, the conversations that are beneficial to the brand are started by experienced marketers or agents of influence working for companies on the forums and in social networks. It can either be an in-house staff or a contracting agency, like HTP Digital, an innovative UK-based b2b digital marketing company with an amazing track record. These guys pick ordinary consumers, and the discussion begins to take a large scale, involving more and more people.