Underwater Motor Electric Hydraulic Dredging Grab for Sand and Mud
|FOB Price:||US $10,000-50,000 / Piece|
|Min. Order:||1 Piece|
|Min. Order||FOB Price|
|1 Piece||US $10,000-50,000/ Piece|
|Production Capacity:||200 Sets/Year|
|Payment Terms:||L/C, T/T, D/P, Western Union, Paypal, Money Gram|
- Model NO.: Enjue-1312
- Dead Weight: 4t~110t
- Carrier: 4t~50t
- Trademark: China Enjue
- Specification: 100t
- Color: Customized
- Pulley Block: 5~7
- HS Code: 84314100, 84314100
- Transport Package: Nude Package or as Your Required
- Origin: China
This product is mainly used for digging sludge and muds underwater in order to dredge fairways. The opening and closing process is realized by the steel wire ropes in the hoisting mechanism and its closing force roots in its pulley block. Its structure is optimized to reduce the water surface tension when it leaves the water surface. Features: simple structure, convenient operation, high efficiency, low malfunction rate.
It is an efficient tool for dredging deep sides of sea or lakes. The mechanical structure for opening and closing is succinct and original. No maintenance required except greasing. It is easy to use and can work under any circumstances in order.
It is used to transport cast loads which have 1-2ton/ m3 density.
Automatic single rope system. It has a mechanism that gets it turned off or turned on automatically. Our products have the capacity between 0.5 m3 up to 5 m3 They are painted two times against the corrosion. bucket jaws are made of special steel material. It is used by attaching to ship and port crane hooks. Casted steel pulleys are used.
25T Remote-Control Bulk grab Specification
:25/ 25T Remote-Control Bulk grab
:25t fit to 25t cran/size of grab:refer drawing
/ Empty grab opening time:12s / cubage:6-12m3
/ Empty grab closing time: 18s / Rating burthen:~16t
/density:~1.0-2.0t/m3 / Grab dead weight:~9.2t
1.Q345B,42CrMo,.HARDOX400,HRC50..Material of scoop is Q345B, material of all axes is 42CrMo, by tempering and grinding. Material lips is HARDOX400,and the rigidity should be reach HRC50.O ,the part's Material according to drawing.
2.,,,,,.The holes of up beam,pole,low beam and scoops are bored by machine, it can ensure the concentric,detailed allowance error according to drawing request.
3..,160um.All steel will blasting shot before machining. After completion of the production deal with the surface coating, Thickness of coating greater than 160um.
4.,.,.The activities of nodes need to consider lubrication, the attention of the design, such as lubricating device should not be bump. Installation of hydraulic cylinders to be used in spherical joints, and have the lubrication.
5.,,.3.All important place should go to beveling,and welded joints carry on the loss less crack detection, and the grade of welded joints must reach first-level.
6.,.The hydraulic system
And the part like the hydraulic cylinder,the hydraulic valve and so on will select famous factory's manufacture.
7.,,.,.The grab should act accurately, the operation is flexible, do not have the greatly sound. The double clamshell grab must design has the automatic balanced organization, causes grab double clamshell to opening or the closing time synchronization.
8.10mm,3mm.,.Whole dimension deviation of grab should less than 10mm, mostly install dimension deviation less than 3mm.If there are some special requests, machining according to drawing.
All the grabs are directly linked to the hooks of the cranes. When designed the grabs should match size. The grabs are connected with the hook of the cranes in links. The strength of the links can lift the 3 times weight in security (including the dead weight and the holding material weight).
10..The installation position of each vulnerable must be considered the replacement the conveniences
11.,"",,.Each grab must be painted related marking in conspicuous place, including "ENJUE"nameplate,the grab serial number , rating burthen and so on.
12..Other end mentioned technological requirement according to the Ministry of Communications related grab manufacture standard and enterprise standard execution.
1)/SWL: SWL25 T
2)./Sheave dia: 650mm
3)./Wire rope dia: 36mm
5)./Max. width when open: 3828mm
6)./Working height: 10000mm
7).()/Dead weight: ~9.2T
2)./Stay bar: Q345B
3)./Leave structure one of the bolster: Q345B
4)./Pulley: Q345B hot rolled
5)./Pulley axes: 42CrMo,strengthened
6)./Pulley axletree Famous-brand bearing of China
9).,/Bottom lips HARDOX500
10)./parts list /chart
Hydraulic oil pipe
Local famous brand
Local famous brand
Stencil plate unloading is cut with numerical control.(the merit: 1, slinky & indentation has no stress; 2,the aperture between the welding plates is thin, the welded stress is small and the welding line will not crazing.
It is protected by gas when welding, the welded stress is mall and the welding line will not crazing.
The holes of up beam, press rods, low beam and scoops are bored by machine, it can ensure the concentric.
All the surface of the steel structure is sand-shot to Sa2.5 grade.
Primer coating app. 80μm, top paint app. 80μm.
Color of top paint: according to the customer.
,/ Work theory
When the grab is opening, the moving board is connecting with top roof beam, and separate with down roof beam, at the that time, the hydraulic circuit system is opening, and the piston of hydraulic vat was pulled out by moving board. when grab the goods, the hook of the crane go down, the moving board go down along the hydraulic vat with the piston of the cylinder, when the moving board touch the stroke switch on the down roof beam, the stroke switch stop the electromagnetism valve to stop the hydraulic oil . The hook of the crane goes up with moving board and down roof beam, to make the grab close.
Press the radio switch, send the message to the receiver, then the electromagnetism valve open the hydraulic circuit system, the hydraulic vat was extended because of the gravity of goods and down roof beam, the down roof beam was separated from moving board, to make the grab open , and the grab can do the next closing cycle.
,/Other technical parameter
1./working voltage : 24/24V DC
3./frequency : /emission 321MHz ;/incept 331.7 MHz
4. :Charger 110-220/input 110-220V ; 2.2A /output2.2A
5. /Batteries 120(,20ºC)/Dry Cell 45A Charging life is 120 hours non stop working (DC12~24V, new batteries)
1. ,,.There is a buffer device equip on the valve of the hydraulic system on our company;s grab ,it is in order to lower the impact force when opening the grab.,thereby extending the service life of hydraulic cylinder system effectively.
,2-4/ Each 2-4 grab include below parts for free :
1)/hydraulic seal 1/set
3)remote control and receiver 1set (,)
5)/battery charge 1/set
6)/grease nipple 20/unit
,/ Quality ensured:
,, (,,,).Within 18 months after the grabs delivered or 12 months after the operation date, we provide global sales service.(unusual employ attaint is exception, The quality ensured of import part such as hydraulic valves and pipe adapter the duration of insurance of supplier quality according to importing),
When the supplier delivers goods, offer a crab bucket of general drawing, quick-wear parts pictures, part catalogue, user manual and maintenance manual etc.
One Copy of Product Qualification Certificate
CCS BV RINA.(If request)
. Picture Reference.