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1.multiple choice, 2.widely used with hoist and crane, 3.professional manufacturer, 4.shell-shape grab,orange petal shape grab - details see: https://www.machineto.com/compact-design-overhead-crane-grab-30-ton-crane-grab-10201780

Introduction

1.Grab can be classified into shellshape grab and orange petal shape grab.The former consists of

two complete buckets, and the latter is made up of three or more than three jaws.
Mechanical grab: mechanical grab itself has no retractable structure, and is usually driven by

ropes or connecting rod force. According to operating characteristics, it can be divided into single

rope grab and twin rope grab which is in the most common.

2.Single grab: support rope and open closed rope use the same one. Through special lock catch device,

wire rope can take turns to play the role of supporting, opening and closing. The coiler mechanism

of single coiler is simple, but production efficiency is low, so it is not often used when a factory

has a large number of loading and unloading.

3.Double rope grab: there are supporting rope and open closed rope which are respectively around

the coiling block of supporting mechanism and opening/closing mechanism. It has such features as

reliable work, simple operation, high production efficiency and wide application.It will be four-rope grab after adopting two groups of double ropes, and it has the same working course as

double-rope grab.

4.According to bulk density of grabbed materials, grabs can be classified into light, medium size

and heavy ones. On the basis of the number of jaw plates, it can also be single jaw grab and double-jaw grab which is used in the most common. Multi-jaw grab should be adopted for lump ore, scrap iron and steel scrap because it has such features as

multi grabs and sharp cut, and it is easy to plug into material pile. This can get a better grab.

There is another shear type grab imitating scissors structure theory. Its grabbing force gradually

increases with opening and closing of jaw plates; in the end the force reaches the max. The opening

and area of its bucket mouth are bigger than ordinary grabs, which improve grabbing capacity and

is easy to clean stock ground and cabin. But grabbing effect is poorer for bulk materials because

its initial grabbing force is small.

Judith Chen thanks for your interest in our crane grab .If you want to know more about our 30 ton crane grab ,please contact the following information.

Skype:Judith.Chen5156

Trade manager:cn1001816994

Telephone:86-0373-3020456

Fax:86-373-7720077

Mobile phone:0086-13598701680

Website: http://bestbusiness.en.alibaba.com

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