The mechanical scissor grab is a purely mechanical grab that relies on four wire ropes that are wound in a special way to provide power to the grab and control the opening and closing of the grab.
Structure Composition
Mechanical scissor grab usually consists of a jaw plate, hinge shaft, connecting rod, pulley set, balance frame, and other parts.
The jaw plate is the part that directly grabs the material, the hinge shaft is used to connect the parts and provide the rotating pivot point, the connecting rod transmits the force and movement, the pulley set is used to change the direction and size of the force, and the balance frame ensures the balance and stability of the grab when it is working.
Advantageous features of Mechanical scissor grab
- Conforms to quality management standards ISO, e.g. ISO 9001, ISO 9004, CE, etc.
- Comply with the inspection standards of classification societies, such as: CCS, ABS, LR, RINA, RMRS, DNV, etc.
- Purely mechanical construction;
- No hydraulic or electrical systems required;
- Can be used for both underwater dredging and land-based operations;
- High reliability and low maintenance cost;
- Simple operation, through the control of lifting equipment, can complete the gripping and releasing action;
- The scissor grab can be opened to a near horizontal position, bringing the grab closer to the hopper or conveyor chute;
- Lighter weight, which minimizes the load;
- Different shapes and sizes of jaws can be designed according to different materials and working conditions, with strong adaptability.
- Accept non-standard customisation
3D Design Models
The whole scissors grab is designed by CAD and other software, and the steel structure is calculated and analysed by FEM finite element to ensure the stability of each structure.
Main Technical Parameter
Parameter table into the display part of the parameters, Enjue grab more models and details of the data can be contacted customer service personnel, find Enjue professional and technical team consulting.
| Type | Hook SWL(t) | Grab Volume(m3) | Deadweight(t) | Size(mm) | ||||
| A | B | C | D | E | ||||
| EJMSGB10.0-7.8-3.8 | 10.0 | 7.8 | 3.8 | 3962 | 4310 | 2700 | 4511 | 2865 |
| EJMSGB12.5-9.6-4.8 | 12.5 | 9.6 | 4.8 | 4324 | 4683 | 2841 | 4828 | 3010 |
| EJMSGB20.0-15.5-7.6 | 20.0 | 15.5 | 7.6 | 5204 | 5627 | 3225 | 5642 | 3402 |
| EJMSGB25.0-19.4-9.5 | 25.0 | 19.4 | 9.5 | 5363 | 5842 | 3526 | 6020 | 3672 |
| EJMSGB32.0-24.0-12.8 | 32.0 | 24.0 | 12.8 | 5960 | 6480 | 3800 | 6560 | 3820 |
| EJMSGB40.0-30.2-16.0 | 40.0 | 30.2 | 16.0 | 6630 | 7220 | 4180 | 7170 | 4050 |
Working principle
A mechanical scissor grab bucket relies on the movement of the mechanical structure to achieve the gripping and releasing action.
As the hoist applies force to the grapple via the wire rope or other connecting device, the pulley set drives the linkage movement, which in turn causes the jaw plate to rotate about the hinge axis, achieving closed gripping of the material.
When the force is released or reversed, the jaw plate opens under the action of gravity or other resetting devices to release the material.
Application scenario
In the construction industry, the mechanical scissor grab bucket can be used for gripping and transporting building materials such as bricks, blocks, stones, etc.;
In port terminals, the scissor grabs can be used for loading and unloading bulk and general cargo;
In mines, the mechanical scissor grab can be used for gripping ores, coal briquettes, etc.;
In the timber processing industry, the scissor grab bucket can be used for gripping and transporting logs, boards, etc.
