Grab two-maxillary one-rope (two-maxillary ladle)
- it is a kind of cargo capture which is applied during the loading and unloading works with lumpy and bulks (sand, slag, crushed stone, gravel, coal, etc.). It is applied on goat, bridge and tower cranes, and also on excavators instead of a usual ladle.
The one-rope grab is the grab having one rope. The running cycle of the device - a zacherpyvaniye, lifting of loads, disclosure of jaws and lowering of the grab is conducted by one rope working from one winch. The main advantage of the one-rope grabs allowing to use one-drum drives of load-lifting mechanisms (truck crane) consists in it. The one-rope grab is hung directly on a hook of the load-lifting mechanism and is quick-change load gripping adaptation. By means of the one-rope grab perhaps on the existing load-lifting equipment to mechanize loading and unloading works on transportation of loose freights.
By the principle of opening of jaws one-rope grabs are divided into several systems:
1. Grabs which jaws open at a contact of a basic surface.
2. Grabs which jaws open at any height (within the course of a hook of the load-lifting mechanism) by means of the rope or operated switching-off device.
3. Grabs which jaws open at a certain height by means of a suspended bell.
Two last systems have remote control, demanding separate mechanical communications (ropes, etc.) that is an essential shortcoming.
Grabs which jaws open at a contact of a basic surface are subdivided into two subsystems:
1. Grabs with the falling lever.
2. Grabs with the compensating drum (the main shortcoming - complexity of a design and the subsequent repair).
Technical characteristics of two-maxillary one-rope grabs:
|Standard size||/ p, t||Settlement volume, m ³||Mass of freight, t||Density of freight, t/m ³||Mass of the grab, t|
Delivery of two-maxillary one-rope grabs with the following technical characteristics is also possible:
It is intended for loading and unloading of loose and melkosypuchy materials with a volume weight up to 2000 kg/m ³ Management is made directly by the crane operator. Ease of management is caused by a special design of the one-rope grab, do not demand an additional zapasovka of a rope (are hung on a crane hook), are quick-change load-lifting body, are suitable for an overload of materials according to the scheme: car warehouse. The grab one-rope has the big geometrical capacity, and also big mass of the scooped freight that allows to save operating time significantly.
Key parameters and sizes of the grab 5-C3-1k-B-1:
The grab two-maxillary one-rope for an overload of construction materials DG2-5-C2-1k-V-1 of plaster, lime, salt, sulfur.
Appointment: an overload of plaster, lime, salt, sulfur according to the scheme the car warehouse.
Key parameters and sizes of grab DG2-5-C2-1k-V-1:
Key parameters and sizes of grab DG2-5-C3-1k-V-1:
Key parameters and sizes of grab DG2-5-T2t-1k-V-1:
Key parameters and sizes of grab DG2-8-C3-1k-V-1,5: