Single rope grab is only applied to the crane with a lifting rolling drum. Switching mechanism is novel and is operated freely when lifting weights. It is used on the ground or under the water. It can be classified into X type and U type.
Four-rope grab mainly matches with bridge cranes or gantry cranes. It grabs all kinds of piled loose materials to load, unload, transport, pile and add. We can design grabs with tooth, parallel girder opening and working underwater etc. according to what customers require.
Electric hydraulic grab adopts comprehensively electricity, hydraulic, mechanical technology. Degree of automation is high. Grabbing force is big. It is energy-efficient, an ideal tool to lift iron, steel and ore materials etc.
Model | S0307 | S0510 | S0515 | S0525 | S0830 | S0840 | S1020 | S1050 | |
volume | m³ | 0.75 | 1 | 1.5 | 2.5 | 3 | 4 | 2 | 5 |
Type | Light | Heavy | Medium | Light | Medium | Light | Heavy | Light | |
Proportion of materials | t/m³ | ≤1.7 | ≤2.0 | ≤1.6 | ≤1.0 | ≤1.6 | ≤1.0 | ≤2.5 | ≤1.0 |
Capturing the materials | t | 1.275 | 2 | 2.4 | 2.5 | 4.8 | 4 | 5 | 5 |
Percentage of pulley | 3 | 5 | 5 | 5 | 5 | 3 | 5 | 5 | |
The diameter of steel wires | mm | 13 | 16 | 16 | 16 | 19.5 | 19.5 | 19.5 | 19.5 |
Times of opening and closing | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
The diameter of pulley | mm | 260 | 360 | 360 | 360 | 500 | 500 | 500 | 500 |
Tons of the match hoist crane | t | 3 | 5 | 5 | 5 | 8 | 8 | 10 | 10 |
Self-weight of grab | t | 1.14 | 2.1 | 1.95 | 2.2 | 3.7 | 3.9 | 4.9 | 4.4 |
Total height of grab | mm | 2246 | 2650 | 3026 | 3280 | 3290 | 3370 | 3915 | 4300 |
Notes | Design as customer’s demand | ||||||||
Above information just for reference, detail parameter based on different lifting weight. |
Crane Grab can be classified into shell shape grab and orange petal shape grab. The former consists of two complete buckets, the latter is made up of three or more petals
Mechanical grab: mechanical grab 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 most common.
Single-grab: support rope and open-closed rope are 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 if a factory has a large capacity of loading and unloading.
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: 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.
According to bulk density of materials, grabs can be classified into light, medium-size and heavy ones. On the basis of number of jaw plates, it also includes single-jaw grab and double-jaw grab which is used in most popular. 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 easy grab. There is another shear type grab imitating scissors structure. Its grabbing force gradually increases with opening and closing of jaw plates; at last, the force reaches the max. The opening and 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.
Hydraulic grab belongs to hydraulic structure products. Welding is the most important productive process, and welding quality influences structural strength directly and its service time. In addition, hydraulic ram is also the key driven part. Hydraulic grab belongs to equipment accessories of special industry, and needs special equipment, in order to improve efficiency and quality of working. For example, CNC plasma cutting machine, groove edge milling machine, roll machine, positioner, boring machine and hydraulic test bench etc.
KORIGCRANES ( HENAN WEIHUA KORIG CRANES CO., LTD) located in crane hometown of China (cover more than 2/3 crane market in China), who is a trusted professional industry crane manufacturer and leading exporter. Specialized in design, manufacturing, installation and service of Overhead crane, Gantry crane, Port crane, Electric hoist etc, we have passed ISO 9001:2000, ISO 14001:2004, OHSAS 18001:1999, GB/T 19001-2000, GB/T 28001-2001, CE, SGS, GOST, TUV, BV and so on.
To meet the demands of the oversea market, we independent research and development European type overhead crane, gantry crane; electrolytic aluminum multi-purpose overhead crane, hydro-power station crane etc. European type crane with light dead weight, compact structure, lower energy consumption etc. Many main performance reach the industry advanced level.
KORIGCRANES Widely used in machinery, metallurgy, mining, electric power, railway, petroleum, chemical, logistics and other industries. Service for hundreds of large enterprises and national key projects such as China Datang Corporation, China Guodian Corporation, SPIC, Aluminum Corporation Of China(CHALCO), CNPC, Power China, China Coal, Three Gorges Group, China CRRC, Sinochem International, etc.
Our cranes has been exported cranes to more than 110 countries for example Pakistan, Bangladesh, India, Vietnam, Thailand, Indonesia, Philippines, Malaysia、USA, Germany, France, Australia, Kenya, Ethiopia, Nigeria, Kazakhstan, Uzbekistan, Saudi Arabia、UAE、Bahrain、Brazil, Chile, Argentina, Peru etc and received good feedback from them. Very happy to be friends with each other come from all of the world and hope to establish long-terms good cooperation.
KORIGCRANES has steel pre-treatment production lines, automatic welding production lines, machining centers, assembly workshops, electrical workshops, and anti-corrosion workshops. Can independently complete the whole process of crane production.
Q. What’s the information should I provide when inquiry?
More details or drawings, better.
A: Lift capacity B: span C: lift height D: power source; other specials you give us will be more appreciated.
Q. How many operating methods for my selection?
Standard operating methods:
A: remote control with push buttons
B: cabin (space capsule seat) control with joystick. Choose any type as you like.
Q. Can this type work in hazardous environment?
A:Sure! We can customize for you, acid proof or explosion proof, no problem for that.
Q. Can you provide the serious lifting tools?
A:Sure, we can provide any lift tools such as lift sling belt, lift clamp, grab, magnet or other specials as your requirement!
Q. How can we install the crane?
A:Our senior engineer can be your side to do the installation guide service and training. Moreover, our best sales can visit your country.