30T 24ton/12-15cbm hook on Wireless radio Remote Control clamshell marine deck crane grab Bucket for sale
25T Remote-Control Bulk grab Specification/Radio Remote Control Clamshell Grabs Bucket with BV CCS ABS Certificated
Grab type:
:25/ 25T Remote-Control Bulk grab
:YK25[8-10-12]10B-00
Technical questionnaire
- :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
Technics standard:
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.
3160um.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.
5All 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.
9.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
4)./Stroke: -1529mm
5)./Max. width when open: 3828mm
6)./Working height: 10000mm
7).()/Dead weight: ~9.2T
Materials;
1)./SCOOP Q345B
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 Local Famous-brand
7)./Axes: 42CrMo,strengthened
8)./Bushing: ZGMn13
9).,/Bottom lips HARDOX500
10)./parts list chart
Remote control |
APLLO |
Sealing parts |
PARKER
AMERICA |
solenoid valve |
VICKERS
AMERICA |
Hydraulic oil pipe |
EATON,MANULI
, |
batteries |
STK
AMERICA |
Cylinder |
Local famous brand |
Wire rope |
Local famous brand |
| Others |
Refer above |
Techniques: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.
2.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.
Work theory
---Closing Cycle:
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.
---Opening Cycle:
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.
paint:
1., Sa2.5 All the surface of the steel structure is sand-shot to Sa2.5 grade.
2.80μm, ,80μm Primer coating app. 80μm, top paint app. 80μm.
3.Color of top paint: according to the customer.
Remark:
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
2)/tools 1/set
3)remote control and receiver 1set (,)
4)/battery 1/set
5)/battery charge 1/set
6)/grease nipple 20/unit
Audited Supplier 
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