Gantry gantry gantry latest price list of professional quality assurance

How to choose a gantry crane, single girder and double girder gantry crane choose it complies with the relevant provisions of General Purpose Gantry GB / T14406-1993 and GB5905-86 of. In general, from the weight of 50t or less in the span of less than 35m, no special requirements, should use a single main beam. If you require a large gate leg width, high operating speed, or frequent lifting heavy items, grew up in pieces, then should choose the double girder gantry crane. Second, the length of the span and cantilever gantry crane span is an important factor affecting the quality of the crane itself. Selection, to meet the conditions of use and equipment Subject to span series of standards, should be minimized span. Third, to determine the principles wheelbase of (a) meet the requirements of the stability of the gantry crane along the track direction; (b) the overall dimensions to be able to pass the legs flat steel; (c) pay attention to the tread B and span S proportional relationship, and generally Wheelbase B = (1 / 4-1 / 6) S. Fourth, the gantry crane pitch size determined in the work, should be left between the external dimensions of gantry cranes and container yard cargo and transport vehicles passage certain spatial dimensions, in order to facilitate loading and unloading operations. When the general transport vehicle loading and unloading in the span, and doors should be kept above the legs have 0.7m spacing. Spreader should not work more than 0.5m spacing and transport vehicles, cargo when the legs get married, there should be more than 0.5m spacing. In the form of classification can edit gantry crane frame structure form, according to the main form of beams, according to the main beam structure, according to use in the form of classification. [1] The frame structure is divided into gantry crane and cantilever gantry crane gantry crane 1. Full gantry cranes: main beam no overhang, the car in the main spans; 2. Semi gantry cranes: leg height difference , according to the civil use of space requirements. 1. Double cantilever gantry crane cantilever gantry crane: The most common type of structure, the effective use of its force structure and site area are reasonable. 2. Single Cantilever Crane: This form of structure is often due to space constraints and is selected. [1] The main form of single girder beam 1. single main girder gantry crane structure is simple, easy to manufacture and installation, low quality of their main beam mostly Partial rail box-shaped frame structure. Compared with double girder gantry crane, the overall stiffness weaker. Therefore, when the starting weight Q≤50t, when the span S≤35m, can this form. Single girder gantry crane doors leg has L and C forms. L type of manufacture and installation convenience, the force was better, the smaller their own quality, but, lifting goods through space at the relatively small number of legs. C-type legs made of sloped or curved shape, aimed at a greater horizontal space, so that goods pass foot. 2. The double main beam double girder gantry crane carrying capacity, span, the overall stability, variety, but the quality of their starting weight compared with the same single-girder gantry crane to be bigger, the cost is higher. Depending on the main beam structure, it can be divided into box beams and trusses in two forms. More commonly used box structure. [1] structure 1. Structure of the main beam or joist using angle beam welded together, the advantage of low cost, light weight, wind resistance. However, due to the welding points and truss own shortcomings, joist deflection also has large and small stiffness, relatively low reliability, requiring frequent detection solder joints and other shortcomings. Suitable for lower security requirements, from the weight of the smaller venues. 2. box beam using steel plate welded into a box structure, with high security, rigidity and other characteristics. Generally used for large tonnage and large tonnage gantry crane. Such as the right MGhz1200, from the weight of 1,200 tons, is the largest gantry crane, the main beam with a box beam structure. Box girder also has high cost, since the major disadvantage of poor wind resistance. 3. Cellular beams are generally referred to as "castellated beams isosceles triangle," the Ends of the main triangle, honeycomb holes on both sides of the oblique abdominal, upper and lower portions have a chord. Cellular beams and joists absorb the characteristics of box girders, compared with larger joist stiffness, small deflection, and higher reliability. However, due to the use of welded steel, the weight and the cost is slightly higher than the joist. Applicable to the use of frequent or large venues or lifting beam field. Because of this beam type is the patented product, thus producing fewer manufacturers. [1] The use form 1. Common Rail gantry crane gantry cranes [1] This type of crane use more boxes and truss structure, the most widely used. You can carry a variety of bulk materials into items and, from the weight of 100 tons, a span of 4 to 39 meters. Grab common with the work of a higher level gantry crane. Common gantry crane mainly refers hook, grab, electromagnetic, hoist gantry crane, but also includes semi-gantry cranes. 2. Station gantry cranes for lifting and hoisting the main gate, but also for the installation. Lifting capacity of 80 to 500 tons, small span of 8 to 16 m; the lower lifting speed of 1 to 5 m / min. This crane lifting, though not often, but once the work is very heavy use, it should be appropriate to improve the working level. 3. shipbuilding gantry cranes for the berth assembled hull, standing with two lift car: There are two main hook of a run on the track on the bridge flange; another has a main hook and an auxiliary hook, in It runs on the lower flange of the rail bridge to flip and hoisting large hull blocks. Weight is generally from 100 to 1500 tons; span of 185 meters; lifting speed of 2 to 15 m / min, and 0.1 to 0.5 m / min jog speed. The container gantry cranes for the container terminal. Trailer Bridge will quay container carrying containers unloaded from ships RMG [1] or transported to the yard behind the rear, stacking up by a container gantry crane or direct loading removed, can speed up the container carrier bridge crane or other turnover . Can be stacked three to four layers, wide and 6 rows of container yard, general use tire, it also has a rail-like. Compared with container gantry crane container straddle carrier, its height and door frame on both sides of the span are larger. In order to meet the transport needs of ports, the higher the level of this crane work. Lifting speed of 8 to 10 m / min; span container according to the number of rows to determine the need to cross a maximum of about 60 meters corresponding to 20 feet, from the weight of 30 feet, 40 feet long containers were about 20 tons, 25 tons and 30 tons. [1] 2 component parts editor based on industry standards GB / T14406 provisions gantry is mainly composed of the following parts 1, 2 wheel cylinder, buffer 3, brake blocks 4, 5 wire rope, lifting hook 6, cab 7, reducer 8, casting pulley 9, casting reel 10, motor 11, electronic control equipment [1] gantry crane gantry crane structure diagram in Figure (11) 3 Method Editor First, the model standard gantry cranes code, rated quality, span, working-level features four main elements represented models. Second, single girder gantry crane its symbol has: MDG, MDE, MDZ, MDN, MDP, MDS. Such as: MDN- single girder trolley single grab gantry crane hook; MDS- single girder trolley with three gantry cranes. Third, the dual-beam gantry crane has its symbols: MG, ME, MZ, MC, MP, MS. Such as: MG- double girder gantry crane hook single trolley; ME- double girder gantry crane hook double trolley. [1] 4 People's Republic of China national standard editing national standards GB / T14406-93 common gantry crane 1 main contents and scope of the standard specifies the contents of general gantry crane classification, technical requirements, test methods and inspection rules. This standard applies to common gantry crane open operation (hereinafter referred to as the crane), their fetching device is hook, grab or electric sucker (lifting magnet), or simultaneously use one of two or three. Special gantry crane and the same may also refer to the use of similar parts. 2 References basic standards GB 191 GB 699 packaging Pictorial marking quality carbon steel structural conditions GB 700 GB 783 carbon steel cranes up to GB 985 Series gas welding, SMAW and GMAW welding groove form and dimensions GB 986 submerged arc weld groove basic forms and sizes round strand wire rope GB 1102 GB 1348 GB 1591 ductile iron castings GB 3323 low alloy steel melt steel welded butt joints radiographic quality grading crane design specification GB 3811 GB 4628 GB 4942.2 bridge crane wheel cylinder shell protection grade low-voltage electrical test specification GB 5905 crane and procedures GB 5972 Lifting wire rope of practice for examination and discard buffer GB 6333 GB 6164 crane electro-hydraulic block brake GB 6334 DC electromagnet block brake GB 6417 weld metal melting defect classification and description GB 6974 Lifting terminology rope GB 8923 GB 8918 quality steel surface before painting Rust grades and preparation grades GB 9286 Paints and varnishes cut test for GB 10051 Crane Hook GB 10095 involute cylindrical gear precision GB 10183 Bridge and gantry crane manufacturing and track installation tolerance GB 11352 Carbon steel castings for general engineering purposes GB / T14007 general overhead and gantry crane cab technical conditions ZBJ 19 010 crane deceleration is ZBJ 19 011 crane pedestal reducer ZBJ 80 006 cranes casting crane pulley ZBJ 80 007 casting reel ZBK 26 008 YZR series crane and metallurgical three-phase induction motors with wound rotor ZBK 26 007 YZ Series Crane and metallurgical three-phase asynchronous motors for JB 1152 boiler and pressure vessel steel butt weld ultrasonic testing JB 2299 mining, construction, material handling machinery paint colors and safety signs JB 2759 electromechanical products packaging technology JB 4315 crane Electric Control Equipment 3 3.1 Classification 3.1.1 Type species of crane girder structure is divided into single-girder gantry crane (see Figure 1) and double girder gantry crane (see Figure 2), in the form of a double mast structure cantilever , and no single cantilever arm three. [1] 5 rules editor a former double girder bridge crane Procedure 1. Work a. The brake, hooks, ropes and safety devices and other components required to check the card check and found abnormalities, should be thoroughly excluded. b. The operator must confirm to go on unmanned rail station or when we can close the main power supply. When locking or sign the power circuit breaker is closed by the original person only after the main power is removed. 2. Work a. When the class first lifting weights (or the maximum load weight), should be suspended height of 0.5 meters from the ground after the weight is lowered again, check the brake performance, reliable after confirmation, then normal operation. b. The operator in the job, should be required for the following job-ringing alarm. ① lifting, landing weight; start big, when the car driving. Gantry cranes [1] ② clear line of sight when traveling crane through to continuous-ringing alarm; ③ crane with a crane near the cross in another time. ④ lifting heavy objects close to the staff. c. Operation operation command signal should be unified regulations. d. Work sudden power failure, all controllers should handle in "zero" position, should be checked before re-work the crane operation is normal. e. Crane large car in normal operation, is strictly prohibited Anti-vehicle parking brake; transform large, the direction of movement when the car must be handle in "zero" position, so that agency completely stopped running, in order to drive backward. f. Two crane hook, when the main and auxiliary hook and two hooks when switching to highly similar, main and auxiliary hook must work alone, so as not to collide two hooks. g. Two hook crane allowed two hook hanging two objects at the same time; without working brake adjustment lifting mechanism. h. Not allowed to use extreme position limiter parking is prohibited in the case of adjustment under load lifting mechanism brake. i. Strict implementation of "Ten is not hanging" system: ① command signal is unknown or not hanging chaos command; ② when not hanging over the rated capacity; ③ spreaders unreasonable or unsound not hanging objects hanging bundles; ④ hanging objects on someone or There are other items are not hanging unanchored; ⑤ brake or other brake safety device failure not hang; ⑥ driving when not hanging heavy hanging directly processed; ⑦ pull Xiegua not hang crooked; ⑧ explosive objects do not hang; ⑨ do not pull in the ground thing hanging; ⑩ angular block port objects, not really hanging mats; j. If abnormal, immediately shut down, check the reason and immediately removed. 3. Work after a. The hook is raised to a certain height, carts, parked the car in the specified location, the controller handle in the "zero" position; pull down the handle to protect me switch off the power. b. Routine maintenance. c. Do shift work. Second, the former single-girder bridge crane Procedure 1. Work a. Single girder crane cab, the driver succession before driving, coping hooks, ropes and safety devices and other components according to the requirements of check card check, unusual circumstances, should be excluded. b. Ground control of single-girder bridge crane, the class should be someone responsible for inspection according to the requirements of the card check, unusual circumstances, should be excluded. c. The operator must confirm to go on unmanned rail station or when we can close the main power supply. When locking or sign the power circuit breaker is closed by the original person only after the main power is removed. 2. Work a. When the class first lifting weights (or the maximum load weight), should be suspended height of 0.5 meters from the ground after the weight is lowered again, check the brake performance, reliable after confirmation, then normal operation. b. Strict implementation of "Ten is not hanging" system: ① command signal is unknown or not hanging chaos command; ② when not hanging over the rated capacity; ③ spreaders unreasonable or unsound not hanging objects hanging bundles; ④ hanging objects on someone or There are other items are not hanging unanchored; ⑤ brake or other brake safety device failure not hang; ⑥ driving when not hanging heavy hanging directly processed; ⑦ pull Xiegua not hang crooked; ⑧ explosive objects do not hang; ⑨ do not hang objects buried in the ground; ⑩ angular block port objects, not really hang pad; c. Abnormal, immediately shut off the power, check the reason and immediately removed. 3. Work after a. The hook is raised to a certain height, carts parked at the specified location, the controller handle in the "zero" position; pull down the knife, cut off the power. b. Routine maintenance. c. Do shift work. [1] 6 How to edit a selection, the selection of gantry crane it complies with the relevant provisions of General Purpose Gantry GB / T14406-1993 and GB5905-86 of. In general, from the weight of 50t or less in the span of less than 35m, no special requirements, should use a single main beam. If you require a large gate leg width, high operating speed, or frequent lifting heavy items, grew up in pieces, then should choose the double girder gantry crane. Second, the length of the span and cantilever gantry crane span is an important factor affecting the quality of the crane itself. Selection, to meet the conditions of use and equipment Subject to span series of standards, should be minimized span. Third, to determine the principles wheelbase of (a) meet the requirements of the stability of the gantry crane along the track direction; (b) the overall dimensions to be able to pass the legs flat steel; (c) pay attention to the tread B and span S proportional relationship, and generally Wheelbase B = (1 / 4-1 / 6) S. Fourth, the gantry crane pitch size determination [1] in the work, should be left between the external dimensions of gantry cranes and container yard cargo and transport vehicles passage certain spatial dimensions, in order to facilitate loading and unloading operations. When the general transport vehicle loading and unloading in the span, and doors should be kept above the legs have 0.7m spacing. Spreader should not work more than 0.5m spacing and transport vehicles, cargo when the legs get married, there should be more than 0.5m spacing. Gantry crane gantry crane outline shape (8) 7 working level editor gantry crane gantry crane is working level A: It reflects the operating characteristics of the crane load status and use in busy two aspects. Q working-level classification is determined by the level of U and use the crane load state. They are divided into eight levels A1 ~ A8. Crane working level, that is, working-level metal structure determined by the lifting mechanism is divided into A1-A8 level, if the provisions of the crane and the type of work control, largely equivalent: A1-A4- light; A5-A6- in; A7- weight, A8- special weight. [1] 8 filings in accordance with the relevant provisions of the State's editor, gantry filing related procedures require the following: the factory certification, manufacturing qualification certificate, installers operating certificate, start informed, self-test report. [1] 9 edit a maintenance, lubrication performance and longevity crane institutions depends largely on the lubrication. Lubrication, maintenance of mechanical and electrical products, lubrication instructions refer to themselves, running carts, trucks and other hoisting beams should note once weekly grease. Fill hoist industrial gear oils (SY1172-80) 200, should always check the oil level, replenish. Second, the rope should be noted that broken wire situation. When, if broken wires, broken or worn amount of shares to be scrapped, it should be replaced with new ropes. Third, the spreader spreader must be checked periodically. Fourth, the main check rope pulley groove wear, whether the crack and pulley rim on the shaft or without jamming. Fifth, the wheel rim and tread regularly checked, when part of the rim should be worn or cracked replace up to 10% of the thickness wheel. When the tread surface of the two driving wheel diameter difference of more than D / 600, or serious injuries occur when tread surface car light again. Sixth, the brakes should be checked once per shift. Brake action should be exact, not allowed to have a pin stuck phenomenon. Brake shoes should fit properly brake wheel, brake shoe clearance when the brake release should be equal [1] VII reducer leakage causes and prevention of common reducer oil spill for three reasons: 1: Due to the manufacturer's design does not Reasonable: no special ventilation holes are too small holes or other design flaw can cause internal and external pressure reducer is not balanced and leakage failure, resulting in gear lubricant leakage fault in the design process. There may be cause gearhead connection Mifengbuyan and other long-term use caused leakage. 2. The level of processing technology resulting in limited contact surface casing and other precision is not enough, thus causing poor sealing performance and produce oil spills happen. 3. Since the operator or improper maintenance maintenance personnel in daily use, resulting in internal blockage many internal pressure higher than the external pressure, but too much oil, fasteners not tightened so will result in the cabinet between the two The combination of surface oil spills caused by lax. In order to effectively prevent oil leakage reducer, manufacturers should enhance the level of technology and optimizing design: you can take in the filling hole cover plus a breather device is provided which can guarantee smooth internal and external pressure equalization. At the same time in the design process should improve the housing bond between two surface craft precision, since the contact surface to prevent oil spills caused by lax failure. While in daily use have to do maintenance work on the vent, fuel, housing, fasteners and other periodic checks whether it is a conventional state.