Archivo del Autor: ghcranes

12 GANTRY CRANES FOR A PROJECT OF TUNNELS AND VIADUCTS IN THAILAND

These gantry cranes were supplied to Stecon over the course of the last year through LGHCRANES, our subsidiary in Thailand.

Precast invert segments are a fundamental part of tunnels construction and civil work projects, given that they cover tunnel walls like a ring, thus creating a solid, durable surface.

The precast invert segments that make up the ring have different geometries, depending on their position in the ring. These precast invert segments are mounted on the tunnel to protect the shell of the shield by placing them together and screwing them in at the circumferential and radial joints.

For the Bangkok tunnels project, being currently developed by the Stecon engineering firm, a specialist in civil works and infrastructures, numerous precast reinforced concrete invert segments are required, which are stored in the yards near the pit’s access point.

The storage yards have various gantry cranes from GH Cranes to store and distribute the precast invert segments. Seven gantry cranes are in place with two 50t capacity travelling wire rope hoists and 18m lift height each. The gantry cranes have a 37.23m span. Each of these units’ wire rope hoists can work independently or in unison.

In addition to these 7 units, the location has 4 other gantry cranes, which are responsible for supplying the tunnelling machine with precast invert segments through the pit. During the drilling process, the tunnelling machine reinforces the tunnel’s walls with these precast invert segments, which means that a steady supply of segments is required in order for the tunnelling machine to continue advancing.

These gantry cranes have a 18m span, with 4m overhang on each side and a lifting height of 9.5m + 32m in the pit. Two of these cranes have a 22t capacity, and another two have a capacity of 10t. The 22t gantry cranes’ lifting speed is 30m/min, and the mechanisms are developed in work group M8. These units also stand out because of their drum safety brake.

A fifth, 2x80t capacity gantry crane is used to handle large prefab blocks.

See 2x80t gantry crane video.

For this project, GH Cranes has tasked LGHCRANES with supplying the gantry crane kits, and the company will be responsible for completing products manufacture and assembly at the client’s facilities.

Over the course of the year, various units were installed in Thailand for Stecon:

Nonthaburi storage area: Installation of seven, 2x50t gantry cranes for the production of concrete segments and blocks for a viaduct.
Bangkok, Bangna district: Installation of a 22t gantry crane for a pit (mud extraction works, tunnelling machine, and precast invert segments), and a 10t gantry crane with a 18m span and M5 lifting height of 9.5m for a stock storage area.
Bangkok, Prawet district: Installation of a 22t gantry crane to supply precast invert segments to the pit.
Bangkok: Installation of a 25t overhead crane with 8m span and a lifting height of 61m.
Chonburi: One gantry crane that had already been supplied but not installed, and another 10t gantry crane.

In addition to these facilities, other units have been manufactured in recent years for Stecon projects:

In 2014, Nonthaburi province: Installation of the first, 63+63t gantry crane with a 36m span for segments production.
In 2016, the same Nonthaburi storage area: Four, 5+5t bridge cranes for auxiliary work.

GH JOINS THE CRANE MANUFACTURERS ASSOCIATION OF AMERICA (CMAA) AS A FULL MEMBER.

In october, we received the official news that gh has been accepted as full member of the Crane Manufacturers Association of America (CMAA).

This news is a significant boost for our brand, because it means being recognised by this Association as a manufacturer with full membership; that is, with the right to receive information about the sector, the ability to influence its regulation and, of course, contribute our experience towards shaping the safety, control and preparation of the regulations that apply to the world of lifting equipment.

Belonging to the CMAA is not only positive for our Brand in the American market, but also a recognition that will give our international expansion a strong stimulus.

Now, apart from taking part in the “Lifting Club”, we must have a proactive attitude so that our ideas can be incorporated in this Association, and that will require significant work by people within GH that cover fields of work of the CMAA such as:

Mechanical Engineering (components)
Structural Engineering (beams, columns and runways)
Electrical Engineering
Services
Marketing / Administration

If we had to make a comparison to illustrate this huge step in our presence in the American market, we could say that now we have risen to First Division; we have to fight to be at the top positions.

60 AÑOS Y 112.000 GRÚAS DESPUÉS

Hemos hecho de la flexibilidad una de nuestras principales señas de identidad y de la innovación, una inquietud constante.

El mes de septiembre de 1958 se produce el inicio oficial de las actividades de GH como proyecto empresarial impulsado por cuatro hermanos emprendedores, audaces y conscientes de que solo con su iniciativa podrían construir su propio futuro.

60 años y 112.000 grúas después, el espíritu de aquellos pioneros sigue plenamente vigente, aunque el perfil del proyecto ha cambiado sustancialmente exigido por los tiempos y por las nuevas necesidades de los clientes y mercados.

GH es hoy una referencia en el mundo de la elevación con una amplia gama de soluciones para muchos sectores de la economía global que demandan nuestras grúas para ser más competitivos y eficaces.

Enfrentando cada proyecto como un nuevo reto, reconociendo con humildad nuestras capacidades y limitaciones, hoy GH es una empresa con presencia multinacional en los principales mercados del mundo para dar respuestas a todos nuestros clientes. Hemos hecho de la flexibilidad una de nuestras principales señas de identidad y de la innovación una inquietud constante para ir por delante de las elementales demandas de quienes deciden otorgarnos su confianza.

GH es un proyecto en crecimiento, con un perfil independiente y con un grupo de personas que comparten el ideario con el que nacimos hace 60 años: honestidad, fidelidad con los compromisos asumidos y una profunda vocación de servicio.

Hemos demostrado a lo largo de estos años que tenemos un hueco importante que ocupamos en un sector altamente competitivo, dominado por grandes empresas con acceso a ingentes recursos y a los que enfrentamos con profesionalidad con nuestros productos y servicios.

Hemos cumplido sesenta años, pensando en cumplir sesenta más permaneciendo fieles a nuestro ideario y a las señas de identidad que nos hacen diferentes a todos los demás.

Miramos al pasado para ser conscientes del camino realizado y de los retos superados. Estamos orgullosos. Pero nuestra mirada nos sirve además para tomar el impulso necesario para proyectarnos al futuro.