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Bridge Crane Technique Description |
¡¡¡¡JQIII series bridge cranes are designed, produced, checked and innovated continuously, according Q/LHL01-2003 Enterprise Standard, Country Standard General-Purpose Gantry Crane GB/T14406-93, and operation simple, safety practical, sufficiently combining project actual principle. Specific direction is below:
¡¡¡¡¡¤The Framework of Bridge Crane
¡¡¡¡The company bridge crane is consisted of double-girders steel construction or Beiley assembled framework guide girders, overhead crane assembly, cross beam vertical cart assembly, front part big cart assembly, middle part displacement big cart assembly, back part big cart assembly, carrying beam cart assembly, hydraulic pressure assembly, frequency converter, control system and interior accessory.
¡¡¡¡¡¤Each Composing Part Direction
¡¡¡¡1¡¢Guide Girder
¡¡¡¡A¡¢JQIII series bridge crane girder adopts double-pieces steel girder framework (material is Q345), and combined Character of Beiley girder, single-side main girder consisted of two pieces vertical parallel chord girder trusses, two piece horizon parallel chord girder trusses, its web members form is rhombus, web member form in horizon parallel girder is web member form of diagonal rod. Its characteristics are: summarizes and draws on advantage of English System Beiley truss structure, light in weight, low in processing cost, high in material utilization ratio and big in toughness, easily control and transform during manufacture, increases the intension and level toughness of girder; single girder of 72000mm in total length consisted of 6 sections of each 12000mm in length, adopts pin to connect tightly between each section; intensifying in the middle part to insure intension and safety when reacting force between curved moment and pedestal is at the biggest during spanning-hole. During spanning-hole, cantilever deflection ¡Ü350mm, during lifting and erecting middle part ¡Ü20mm. The upper of original girder equipts move-platform and guardrail, is of advantage to periodically maintaining its structure and transport.
¡¡¡¡B¡¢JQII series bridge crane¡¯s girder is intensified with 4 rows ¡°200¡± Beiley pieces to insure work intension of its cantilever arm of spanning-hole and girder. Distance between each row is designed 500mm and supported by bottom part intension level support frame, middle vertical intension support frame, upper part specially made steel-pillow and steel-pillow support frame assembly are made into ¡°¹¤¡± shape support, are similar to trunk shape girder, very improve rigidity of Beiley assemble framework, insure rigidity of its frame girder horizon move. The best technics overcomes twist and vibration of frame girder horizon move and foreside girder during span-hole and common fault and hidden trouble of toughness weak, side curve force not enough in Beiley assemble parts.
¡¡¡¡2¡¢Overhead Crane Assembly, Cross Beam Vertical Cart Assembly
¡¡¡¡Overhead crane, machine construction pedestal of cross beam vertical cart and horizon girder pole all adopt box construction, its intension high, rigidity well, shape beautiful, overhead crane main lifting system adopts specially made JM8 hoister which is five-door traveling/crown pulley block ten times power to satisfy rating lift 60t. Rope tube design adopts single winding tube multilayer enwinding, only satisfy traveling black and block at the upmost point, guide-in deflection angle ¡Ü2o of winding tube wire rope and traveling block can insure that do not disorder rope. Overhead crane horizon move and cross beam vertical cart vertically move by frequency converter, realize sending girder and assembling any girder stablily, quickly, precisely.
¡¡¡¡3¡¢Foreside big cart
¡¡¡¡Foreside big cart assembly, its pole height adjusting is equited manipulator or hydraulic pressure automation for adapting erecting ¡Ü40m any specification prefabrication girder, consider project construct market synthesis advantaged scheme: machine manual type. The type pole is equipped multi-sections different specification adjusting poles for choosing equipment according to different height, between each adjusting pole is connected with high intension bolts to insure intension and rigidity.
¡¡¡¡Foreside big cart have two kind work states: vertical cross and deflection cross, two work positions to see general drawing. Adjusting principle direction: when change from vertical cross to deflection cross, move either guide girder connection platform back according to need position( bottom chord connecting platform and girder adopts U type bolt to connect). At the same time pole along bottom girder moves outside and changes position, and small cart move, above can adapt to deflection cross bridges of any 0- ¡À 30 / 0 - ¡À 15 angle, and one step finishes curb girder precisely quickly safely span. The assembly all movement machine all adopts form of machine tool guide rail with pressboard to realize adjusting safely, credibly , and quickly.
¡¡¡¡Foreside big cart assembly and guide girder are connected by steel construction, and insure guide girder vertical and non-transform. Above two appoints cooperate with middle part big cart assembly, tail part stableness construction is connected with guider girder in steel construction, realize the whole of bridge crane during span-hole. ( the direction that the whole increases equipment safe see the middle part assembly brief introduction )
¡¡¡¡Foreside big cart assembly is equipped hydraulic pressure support legs to realize erecting prefabricating girder of different height or automation elevating of foreside big cart assembly during spanning hole, and equipped lock-tight equipment to insure double insurance. ( the construction according to customers¡¯ demand to select. )
¡¡¡¡4¡¢The Middle Part Flatcar Assembly
¡¡¡¡The equipment realize bridge surface constructing two longitude rails ( the middle part flatcar and the tail part flatcar are design: during span-hole at the same rail with the middle part toe index flatcar, so the longitude rail is shorter than the length of girder) can make the whole rigidity of bridge crane spanning hole simple, quickly, and continuously, lay two horizon-rail beams (there are three when deflection cross: foreside big cart is one, the middle part toe index flatcar is two), make curb girder really precisely, quickly, and safely being in position --- efficiency and safety of erecting curb girder are very better than step-by-stey type bridge crane, need not a action of changing hook. Reference to attached drawing one (erect curb girder drawing and safety checking computations) and drawing two (erect curb girder work-situation drawing).
¡¡¡¡Pass through two horizon rails to satisfy that angle adjust between toe index small cart and cross carry pole realize any demand project of deflection cross when are deflection cross. insure forever vertical cross and fixed connection of the cross beam and guide girder, overcome danger hidden trouble of imbalance state of right and left of two girders. The whole cooperation project of foreside big cart assembly, middle part big cart assembly, tail connection construction and girder fixed connection overcomes that non-fixed connection disadvantage produces the biggest danger hidden trouble when guide girder and flatcar of step-by-step spanning hole type bridge crane are connected during span hole.
¡¡¡¡Middle part toe index driving small cart of track gauge can be adjusted to realize the bridge crane two important improvements: one is that reduces two rails when span hole, increases work efficiency of bridge crane spanning-hole assistant project (compared with that non-adjustment rails need middle part assembly two and caudal assembly two), the other is that try one¡¯s best to locate it at the best support point when erects different girder types.
¡¡¡¡5¡¢Tail part big cart assembly
¡¡¡¡Caudal big cart assembly also are designed adjusting track gauge, caudal big cart assembly, middle big cart assembly and middle part hydraulic pressure support legs are cooperation with each other during adjust track gauge.
¡¡¡¡6¡¢Carrying Beam Flatcar Assembly
¡¡¡¡Carrying Beam Flatcar Assembly can be summed up in three points, the first is double initiative double speed, and realize that carry nothing to reture prefabricating field in quick speed and carry heavy to feed beam in slow speed; the second is automatic flexible turning by flat cart turning flat during carry heavy; the third is to realize a complete set bridge crane to adapt to erect prefabrication girder of any type and specification by adjust track gauge.
¡¡¡¡Advice to choose either the second or the third characteristic, consider project benefit, need not realize at same time.
¡¡¡¡7¡¢Middle Part Hydraulic Pressure System
¡¡¡¡Middle hydraulic pressure assembly oil cylinder design adopt hand-operated slide valve control, two oil cylinder can work independently and can work at same time, universal-joint yoke adjust block of support leg below part can adapt to demand of various uneven road surface.
¡¡¡¡8¡¢Electric Control System
¡¡¡¡For insure electric part of equipment runs reliably from the source, the company electric components of bridge crane all adopt produces of China Famous Brand CHINT.
¡¡¡¡From the method of control, each moveing part of bridge crane all adopts frequency conversion control, frequency conversion equipment can realize soft start-up to an electromotor, so when is start-up, start-up electric current is limited below 15 times of electromotor rating electric frequency with electromotor automatic speedup, make it speedup in balance until reaches the need speed to realize smooth start-up, and moving speed and time of speed-up and speed-down can be set and adjusted according to actual need of construction. Bridge crane runs very evenly, eliminate impact produced by startup and stop of each move part. Protect safety of person, equipment and project, and even increase work efficiency of equipment at some angle.
¡¡¡¡Above function of electric control system can be prominently reflected by work condition of bridge crane erects side beam
¡¡¡¡From design principle, in order to adapt to actual need of the bridge site, two overhead cranes or hangers of bridge crane can run dependently and synchronously. Two overhead cranes or hangers can be looked as two independent units when run independently, each works, is not concern with other. Only operate buttons of either of both when two overhead cranes need run synchronously, and both can be operated at same time, in this way efficiently insure work consistency between two overhead cranes and hangers when erect a bridge. On-line operation and single operation can be switched freely, also can do switch of point move and automation according to need.
¡¡¡¡In order to insure safety of electric equipment, an electromotor of each unit all is equipped heat-seperated-button minitype disconnection switch. Electrical source can be switeched off automatically to protect effectively each electromotor when an electromotor happens over-loading or over current trouble.
¡¡¡¡Otherwise frequency converter interior of each electromotor to control move also is equipped over-voltage and owe-voltage protecting, when happen over-current, over-voltage and underroll trouble, frequency converter can stop work automatically to insure equipment safety.
¡¡¡¡9¡¢Product Executive Standard
¡¡¡¡9£®1 Design Basis: ¢Ù Crane Design Criterion------GB3811
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢Ú Crane Design Manual------Dalian Crane Factory Edit
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢Û Medal Framework ------Taiyan Heavy Machine Factory College Edit.
¡¡¡¡9£®2 Executive Standard: ¢Ù General Gantry Crane------GB/T114406-3
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢Ú Crane Test Criterion and Program------GB/5905-86
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢Û Crane Safety Regulations------Q/HLJ01-2003
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢Ü Assembling Bridge Crane------Q/HLJ01-2003
¡¡¡¡9£®3 Standard Executive process
¡¡The company strictly follow ISO9001:demand of 2000 system impenetrates all along, a product is assembled to empty and load test in the factory, supervise and assemble in a custemer¡¯s and make test of emepty load/load. If the customer demand, cooperate with the custermer to make loading test.
¡¡¡¡9£®4 Use export paint product, main machine color is saffron yellow, and strictly follow painting technics. |
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| Posted by |
Susan
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Company
| Wenzhou Heli Construction Machinery
| | Address | Pingyang Wuyang Industrial Zone | City & ZIP
| Wenzhou City
| Country
| China 
| Phone
| For registered Members only.
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| | Interest | Export Our Products | | Company Profile | I. The Enterprist Brief Introduction
Wezhou Heli Construction Machinery Co., Ltd (The original name | | URL | For registered Members only. | | Rating |  (0 reviews) | | Popular tags | | |
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 | | Keywords (seperate by comma) | export bridge crane, gantry crane, hoist | | Product Specifications | Bridge Crane Technique Description
¡¡¡¡JQIII series bridge cranes are designed, produced, checked and innovated continuously, according Q/LHL01-2003 Enterprise Standard, Country Standard General-Purpose Gantry Crane GB/T14406-93, and operation simple, s | | Industry Category | Construction Machinery | | Quality/Safety Certifications | | | Delivery Lead Time | Jul.15 | | Payment & Price Terms | negotiation | | My Offers | neogtiation | | Other Products | | | Customers | see www.hljj.com | | Detailed Company Introduction | I. The Enterprist Brief Introduction
Wezhou Heli Construction Machinery Co., Ltd (The original name is Guangyin Group Heli Construction Machinery Co., Ltd) gathers construction machinery developing, producing, sale and service as a whole, was published a | | FOB Price & Port | 150million USD | | Packaging Details | | | Person in Charge | | | Web Site | For registered Members only. |
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| Product Details |
| Product id |
2830 |
| Visits |
2615 |
| Date |
2004.07.16 |
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