With EPG brand registered in much more than 70 nations around the world like The usa , Europe , Japan and so on, it has associates among entire world top enterprises, these kinds of as JOHNDEERE, NEW HOLLAND, CLAAS, HONDA, KUBOTA, YANMAR, and many others. We also can design and style and make non-regular items to meet customers’ unique needs. We are aiming to meet the demands of the consumers about the globe..
Over head crane complex introduction
1 Layout stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds
EPTT style stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds are point out stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds and relevant stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds and needs from consumer.
1.one EPTT design and style, building and inspection and examination stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds are as follows.
GB3811-83………… carry equipment layout stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB/T14405-93…… EPTT over head crane stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB/T14407………… EPTT overhead crane and gantry crane operator cabin stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB6067-85………… elevate gear security style stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB10183-88………. in excess of head crane and gantry crane development and
rail set up tolerance
GB12602-90………. elevate products overload protective gadget stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB5905-86………… crane examination stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB8918……………… steel rope stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB5972-86………… elevate products metal rope inspection and desert stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB7592-87………… EPTT above head crane dimension stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB8923-88………… steel surface area rusty quality and rust deleting grade prior to portray treatment
SDZ 014……………. EPTT painting stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
GB9286-88………… coloured paint and paint film situation inscription check
GB1497-85………… reduced voltage electric apparatus stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
JB/DQ4658-ninety one…… crane resistor established stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
JB/DQ6146-86…… crane management table
JB/ZQ2007-90…… crane electrical circuit drawing stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
Q/DQ109-ninety two………. crane electrical devices technical stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
JBZ299-78…………. EPTs and venture raise equipments paint colour and basic safety symptoms
GB/T13384………… EPTT EPT and mechanical solution bundle
specialized stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd
ASEM and so on equivalent stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd can also be followed for design and style, manufacture and tests.
one.2 EPTT specification
|one||QD225t-21m A3||1 set|
2 EPTnical outline
Our company is a EPTT crane maker. Designing operate is completed by engineering department. EPTT personal computer aided style stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds are dependent on consumer specialized parameters and use environment conditions. EPTT stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd is GB/T14405.
3 More than head crane technical introduction
3.one Steel construction
three.one.1 Bridge construction incEPTT major girEPTTand conclude beam. Major girEPTTis middle rail box girEPTTwith static rigidity less than s/800 inside of course A4 and class A6 and static rigidity considerably less than s/a thousand for course A7. Total loaded self-vibration frequency is no less than 2Hz.Out aspect of girEPTThas walkway and guard rails. EPTT journey devices and girEPTTelectric equipment are set on walkway. EPTT arrangement and profile is reasonable and beautiful.
three.1.2 Finish beam is box girEPTTwhich is bolted with substantial power bolts.
3.two EPTT mechanisms
three.2.1 In hoist system,there are electrical motors, brakes, couplings and EPTT shafts, EPTTs and winding drum, metal wire and hook set, and stationary pulley.
A. Winding drum is manufactured of solid steel or rolled metal plate and metal wire flat angle is no much more than three.5 deg. There are at lEPT two rounds of security metal wire. Push pads and bolts are secure and trustworthy.
B. EPT mechanism has severe placement restrict with rotary switch.
C. EPT mechanism has CLZ EPT couplings crane and trolley vacation system is CL and CLZ sort.
3.2.2 Trolley vacation system
Trolley is individual driving variety. Wheel is double rim type and bumper is EPT type.
three.2.3 EPTT vacation mechanism
EPTT is four-EPT sort, and wheel has double rims .EPTT shell is angle form. Bumper is EPT anti-crash variety.
three.three Important elements
3.three.one JCEP motor is YZP series with rated volt of 380 v and 50Hz, insulation diploma is F grade and protecting quality is IP44.This kind of motor has greater in excess of load potential and mechanical toughness and is ideal to equipments which start off and end often or with over load and apparent vibration and crash.
three.three.2 Brake is YWZ series with EPT typical closed thruster, elevate system has guide release system. Brake has continual characteristics, EPTTer use daily life and simplicity of routine maintenance JCEP in GB6333-86.
three.3.3 EPTT has ZQ variety and ZSC kind JCEP in ZBJ19571.
3.three.four EPTT hook is forged materials JCEP by GB699-sixty five and GB1051.
3.three.five EPT substance is EPTT150 forged JCEP by ZBJ80006-87 and ratio of pulley and metal wire is no considerably less than 22.4.
3.three.six Winding drum is EPTT200 cast JCEP by ZBJ80007-87
3.three.7 Steel wire of 6w(19) type is JCEP by GB1102-seventy four with power within 1400~1700N/mm2.JCEPty aspect from five to seven must be applied according to system course.
three.three.8 Wheels established stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd is GB4628-84 and wheel substance isZG50SiMn.Tread hardness is within HB300 and HB 380 and a lot more than HB260 in depth of 20mm.
3.3.9 EPT of brake wheel in elevate system is #forty five steel at lEPT in GB699.Brake wheel surface area hardness is inside of EPTC45 and EPTC 5 5,and EPTC40 in depth of 2mm.
3.3.ten EPT of significant elements this kind of as major girEPTTand conclude beam and trolley body meet stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds of GB700-88 and GB1591-88 as follows.
|Factors||EPTificant elements||Other factors|
|Function ambient temperature||Previously mentioned -20 ordmC||Earlier mentioned -20~25 ordmC||Previously mentioned -25 ordmC|
four EPTT major craftsmanship
4.1 Uncooked content with quality certificates is checked just before coming into manufacturing facility warehouse. Then random chemical-actual physical take a look at need to be carried out before storage in warehouse.
four.two Metal plate and EPT metal need to be shot blasted to achieve quality Sa2.five for metal plate area and quality S3 for EPT metal. Rust should be taken out by making use of primer paint.
four.3 Refer to far more thorough info for major factors (primary girEPTTand end beam) approach artwork
A. EPTT plate and world wide web plate butt weld ought to be submerged arc welding. Steel plate more than 10mm thick need to be groove welding and weld should be extremely-sonic or x-ray non-problems 100% inspected.
B. EPTT plate and world wide web plate slicing is with numerical managed cut EPTT to receive pre-deflection.
C. EPTTitudinal seam of principal girEPTTand end beam is welded with submerged arc welEPTTor micro-controlled protecting carbon dioXiHu (West EPT) Dis.de EPT.
D. EPT and assembly of bridge construction are completed with massive measurement system and amount welding.
five Purposeful features
five.1 EPTT static rigidity: for class A4-A6 crane with trolley and load in girEPTTmiddle situation, rigidity is significantly less than s/800,for class A7 crane with trolley and load in girEPTTmiddle position, rigidity is significantly less than s/one thousand.
Static test: crane is loaded with one.25Gn and 100mm-200mm above ground for far more than 10 minutes. Soon after load is released, principal girEPTTshould have no permanent deformation in three check cycles.
5.two EPTT tests: trolley is loaded with 1.1 Gn to start off and brake inside of travel distance of each motion for at lEPT one hour. Then, there should be no injury and linkage free in all factors and system.
six Protecting features
6.1 In EPTT distribution protecting system, there are main circuit breaker, main contactor and automatic swap in every mechanism. Distribution control has crane EPTT activation and off switch and emergency swap, EPTT resource index, protection switch and limit change. Major loop has circuit shortening, in excess of load security, volt loss security and zero security.
six.2 Restrict change of LX10-31 shall minimize off EPTT offer in hoist system when hook approaches intense stage.
6.three There are vacation limit switches at finishes of travel mechanisms.
6.4 There are also QCX-2 type overload limiter which has sign and acoustic-optic alarm and more than load controls.
seven JCEPty defense
seven.1 Emergency switches in control loop circuit shall cut off loop EPTT source in circumstance of unexpected emergency.
seven.2 EPTT entrance doorway and inclining stair doorway and fence door are all interlocked and have protection switches. When 1 doorway is open, security switch is off and then principal contactor shall be disconnected instantly.
eight Trolley EPTT provide
Trolley EPTT is provided through suspending comfortable cable unEPTTEPT steel.
nine Illumination and sign
9.one There are separated transformer for signal and illumination. EPT input line volt is 380 V and aux. output line volts are 220V and 36V. 220V is for crane illumination EPTT and 36V is for crane sign and restore EPTT.
9.2 EPTs unEPTTgirEPTTare quake resistant 400w sort.
nine.3 EPTT have start off warning system controlled from operator cabin.
nine.four EPTT have repair and check socket of AC 36V.
10 Other folks
ten.1 EPTTs are arranged in raceway, and gentle tube is utilized the place raceway is impossible to reach.
10.2 EPTTs are higher temperature proof and EPT is much more than 1.5mm2.
10.3 EPTT reception panel and control panel lines of diverse mechanisms use copper wire and copper bars.
ten.4 There is ten%~fifteen% inventory allowance in handle panel cable bus and EPTT distribution panel and wiring box terminal.
10.5 Primary loop contactor in manage panels of diverse mechanisms are both EPTly and mechanically interlocked.