Agarre las grúas aéreas

Estructura principal

Mainly composed of 5 partes: puente, trolley and crane traveling mechanism, equipo electrico, grab, y otros accesorios.

Puente

1. Double girder, viga de caja de soldadura, national standard camber;
2. Q235 or Q345 steel material(same as Fe37 or Fe52 steel in abroad);
3. The main weld adopt automatic submerged arc welding, NDT;
4. End carriages contacting by high strength bolts and nuts, convenient in transportation;
5. With the uniform, fine, bright, complete and consistent painting color;
6. With painting thickness of 25～35μm each layer and whole thickness of 75～105μm.

Carretilla

1. Lifting mechanism is composed by motor, freno, acoplamiento, transmission shaft, reductor, pulley blocks, cuerda de alambre, y otros accesorios;
2. Crane dedicated YZR type wound motor, insulation class F;
3. Closed Hydraulic push rod type brakes, which closed when machine not working, and opened by brake releases device when working;
4. Roll casting reel, wire rope angle <3.5° , con 3 laps and 2 laps fixed circle at both ends of reel;
5. Crane dedicated 6W(19) cuerda de alambre, line contact type, alta resistencia, larga vida;
6. Rotating limit switch set on spindle nose of the winding drum to keep the safe lifting;
7. Specific Organization Chart

Mecanismo de desplazamiento de la grúa

1. Hay cuatro ruedas móviles instaladas a cada lado de las dos vigas de los extremos.. Dos de ellas son ruedas activas y las otras son motrices.. El dispositivo de conducción de ruedas activas está instalado en la pasarela.. Here adopt two sets of symmetrical independent driving devices and we call it respectively driven.
2. The reducer adopts circular-arc gear one of which load capacity is higher than involute gear reducer of the same type. Todos los mecanismos adoptan rodamientos con A.C.. freno de bloque electromagnético.
3. Los dispositivos de conducción incluyen 1. reductor; 2. Motor; 3. Freno; 4. Acoplamiento; 5.Acoplamiento; 6. Ruedas, etc. se muestran en el dibujo mecánico de la siguiente manera:
4. The contaction of the mechanism parts all adopt gear coupling. De este modo, it can work well by gear coupling compensated even there is an error caused in manufacture and installation or deflection between the parts caused by bridge deformation when loading.
5. Soporte de eje de rueda activo y motriz en la caja de rodamientos angular para fácil montaje y mantenimiento..

Electric Equipment

1. Electric control box layout is reasonable, fácil de reparar
2. Línea de carros de seguridad o línea de carros de acero en ángulo
3. External cable are equipped with mark line number
4. Trolley moving’s power is supplied by flat cable
5. El conductor es de acero I o de línea deslizante en forma de C.
6. Safety sliding touch line with high conductive rate and low pressure drop; colector de corriente con alta velocidad.
7. La elevación y la grúa se pueden controlar de forma independiente.; También pueden trabajar por separado o juntos..

Grabs

1. Four-rope grab、double-rope grab
2. Orange-petal grab、eléctrico & cucharas hidráulicas
3. Straw grab, wood grab, and other rich series varieties

Grab Crane Operating Principle

Grab is the lifting appliance using jaws open and close to load or unload the bulk materials.

According to the operating feature, grab can be divided into 3 kinds, double-rope, single-rope, and motor grab. The most commonly used is double-rope grab.

According to the packing density of the materials, grab can be divided into light (such as to crawl grain), medio (such as to crawl gravel), and heavy (such as to grab iron ore)

According to the jaw plate number, it can be divided into dual jaw plate grab and multitude jaw plate grab, the most commonly used is dual jaw plate grab

customers should adopt the multitude jaw plate grab to crawl the lump ores, scrap iron, and scrap because, with the characteristics of more claws and notch tip, it can easily insert the stockpile and do a good crawl.  

The crane chooses the dual winding drums four rope grab as its crawl device, structure simple and reliable.

Mainly consisted of four parts: 1. head 2. Lifting beams 3. pull bar 4. balde

Trolley equipped with lifting the winding drum and opening and closing winding drum, each set of rolls leads to two-wire rope, including two as a group in both ends of grab balance frame for support, and another set of wire rope going through the upper beam pulley and under beam pulley to form a pulley set, making bucket Ministry open and close.

When start working, grab lifting suitable position by support wire rope, then put down close wire rope, deadweight below lifting beam compels in the center of lifting beam below grab open the grab, when the two auricular plate collision, it is the max limit opened. When open grab, the center distance increased between uplifting beam pulley and down lifting beam, then drop the support wire rope, make the opened grab fall on the slack stack, and then furl close wire rope, make the center distance between uplifting beam pulley and down lifting beam pulley resume primary position, the course of snatch material has been finished. The closed grab fill full of material, at last lifting the close wire rope, the whole grab is lifted, the static crane is removed need yard, open grab unloads the snatch material.

7. Customers should highlight the requirements when crawling underwater materials or special materials and when using outside you should set rainproof devices.