Portal or pedestal jib cranes

84.26 - Ships' derricks; cranes, including cable cranes; mobile lifting frames, straddle carriers and works trucks fitted with a crane. - Overhead travelling cranes, transporter cranes, gantry cranes, bridge cranes, mobile lifting frames and straddle carriers : 8426.11 - - Overhead travelling cranes on fixed support - - Mobile lifting frames on tyres and straddle carriers 8426.19 - - Other 8426.20 - Tower cranes 8426.12 8426.30 8426.41 8426.49 8426.91 8426.99 - Portal or pedestal jib cranes - Other machinery, self-propelled : - - Ontyres - - Other - Other machinery : - - Designed for mounting on road vehicles - - Other The heading covers a number of intermittent-action litling or handling machines. SELF-PROPELLED AND OTHER " MOBILE " MACHINES In general, the heading covers not only fixed or stationary machines, but (with certain exceptions referred to below concerning machines mounted on transport e uipment of the type falling in Section XVII) also mobile machines, whether or not self-propelle~. The exceptions are : (a) Machines mounted on vehicles proper to Chapter 86. Lifting or handling machines are classified in heading 86.04 if they are mounted on wagons or trucks, of a kind suitable for coupling to a train designed to run on a railway network of any gauge. Railway breakdown cranes or crane wa ons or trucks for servicing the ermanent way or rolling-stock, and crane wa ons or truc s for use in railroad goods loa ing depots, usually compl with this con tion. Self-pro elled vehicles for the servicing and maintenance of rai way tracks fall also in heading 6.04. On the other hand, lifting or handling machines mounted on trucks or latforms not meeting the specifications of true railwe rolling-stock remain classified in i s heading. This is usuall the case, for example, wit contractors' cranes mounted to run on rails in servicing uilding sites, quarrres, etc. T K e P l (b) Machines mounted on tractors or motor vehicles proper to Chapter 87. (1) Machines mounted on tractor type bases. Certain working parts of the machines of this heading may be mounted on tractors which are constructed essentially for hauling or pushing another vehicle, appliance or load but, Iike a 'cultural tractors, are fitted mth simple devices for operatin the workin tools. uch workiq tools are subsidiary equipment for occasional woz. In enera ,they are relatively light and can be mounted or changed at the working site by fhe user himself. In such cases, the working tools remain in t h ~ heading s provided they constitute machines of this headmg, or in heading 84.31 if they are arts of those machines, even if presented with the tractor (whether or not mounted ereon), while the tractor with its operating equipment is classified separately in heading 87.01. B B On the other hand, this heading covers self-propelled machines in which the propelling base, the operatin controls, the working tools and their actuating equipment are s ecially designed or fittin together to form an integral mechanical unit. This applies, 8 r example, to a pro e l h g base resembling a tractor, but specially designed, constructed or reinforce to form an inte a1 art of a machine performing one or more of the functions mentioned in this (lifting, handling, etc.). Presented separately, such pro elling bases also fall in this heading, as incomplete machines having the essenttal eatures of corn lete machines of the same kind. Propelling bases potentially classifiable in several o the headings 84.25 to 84.30 because the can be equipped with several different working parts, are classified in accordance wit Note 3 to Section XVI or by application of Interpretative Rule 3 (c). Lf I F ? i: For more detailed criteria for distinguishing between the tractors of heading 87.01 and the propelling bases of this Chapter, see Explanatory Note to heading 87.01. (2) Machines mounted on automobile chassis or lorries. Certain lifting or handlin machines (e-g., ordinary cranes, light breakdown cranes) are often mounted on what is in fact an essential1 complete automobile chassis or lorry in that it comprises at least the following mechanics features : propelling en ine ear-box and controls for ear-changing, and steering and braking facilities. Such assem&ies.kll to be classified in hea%ing87-05 as special ose motor vehicles, whether the lifting or handlin machine is simp1 mounted on the ve 'c e or forms an integraI mechanical unit with it, un ess they are veh~ciksdesigned essentially for transport purposes falling m heading 87.04. r K LYT On the other hand, this heading includes self-pro elled machines in which one or more of the propelling or control elements referred to a ove are located in the cab of a lifting or handling machine (generally a crane mounted on a wheeled chassis, whether or not the whole can be driven on the road un er its own power. d \ The cranes of this headin do not generally move under load or, if they do, the movement is limited and su sidiary to their main function of lifting. f (c) Machines on floating structures proper to Chapter 89. All lifting or handlin machines (e. . derricks and cranes) mounted on pontoons or other floating structures, w ether or not se f-propelled, are classified in Chapter 89. f B MULTI-FUNCTION MACHINES Many machines, in addition to c in out the functions described in this heading or heahng 84.25, 84.27 or 84.28 (lifting, oa tng, etc.) can also perfom the functions described in heading 84.29 or 84.30 (excavating, levelling, boring, etc. . These machines are classified in accordance with Note 3 to Section XVI or by a plicatton o Interpretative Rule 3 (c). Examples are mechanical shovels, draglines, etc., which y interchanging jibs or end attachments can be used as cranes, combined coal-cutting and loading machines, combined trenching and pipe lifting and lowering machines, etc. 78. r, Lifting, loading, handlin , etc., machines presented separately are, however, classified in this heading even if intende for incorporation in other machines or for mounting on transport vehicles or vessels of Section XVII. i The headin covers lifting or handling machines usually based on pulley, winch or jacking systems, an!i often including large proportions of static structural steelwork, etc. These static structural elements (e ., crane pedestals and gantries) are classified in this heading when they are presented as parts o a more or less complete handling machine. ? When presented se arately, they are classified in headin 84.31 provided they are fitted or designed to be fitte with the mechanical features essential or the operation of the moving parts of the complete installation (wheels, rollers, pulleys, running or guide rails, etc.). Otherwise these structural elements are classified in heading 73.08. f i' The heading covers : (I) Bridge cranes, which consist of a powerful lifting unit suspended from a heavy cross beam or " bridge ", the whole moving on wide gau e rails. Slmilar bridge cranes used in nuclear reactors for changing or extracting the he1 e ements are also classified here. f (2) Gantry cranes and overhead travelling cranes in which the beam itself runs on rails fixed on walls or on suitable supporting metal structures. (3) Trans orter cranes, fxed or runnin on rails. These are sometimes very long and norma ly have a cantilever extension w ich may or may not be articulated) over berths or unloadin areas and are equi ped wit a hoisting trolle or crab runnin alol?g the whole length o the beam. Specia types are used for han ing blocks of mlding stone or containers and in shipbuilding. 'f P f 6" d; E (4) Mobile liftin frames on tyred wheels, particularly for container handling. These machines may e self-propelled, provided they are designed to operate when stattonary or, if they are able to move with their load over short distances, that they are sim le portals which in most cases consist of a horizontal beam sup orted by two vertica members (sometimes of the telescopic type), each resting on a set o wheels. F P (5) Straddle carriers, which consist of a chassis of the " straddle " type, y mountedwith on vertical telescopic members for adjusting the height. This chassis is normalgenerally four or more tyred wheels which usually serve both as driving and steering wheels so as to permit manoeuvres within a very small radius. Owing to their special design they are able to position themselves over a load, lift it by means of s ecial gripping devices, transport it over short distances and then lower it again. Some of t ese carriers are sufficiently wide and high to be positioned directly over transport vehicles for lifting or lowering the load. YI Straddle carriers are used in factories, warehouses, dock areas, airports, etc., for handling long loads (profile shapes, tree trunks, timber, etc.) or for stacking containers. (6) Tower cranes. These cranes corn rise essentially a tower, usual1 composed of individual sections, of considerable height, txed or runnin on rail, a main orizontal jib, fitted with trolleys, winches, service platforms and a cab or the operator, a counterweight jib with counterweights, tie bars to support the jibs, and a slewing device, either at the top or at the bottom, to enable the crane to rotate. The tower may contain hydraulic cylinders or jacks and a climbing frame which raise the jib so that adhtional tower sections can be attached to increase the working height of the crane. ? r, t: (7) Portal or edestal cranes, as used in harbours, which are jib cranes supported on tall four legged pe estals which run on rails of such wide gauge as to span one or more nonnal railway tracks. $ (8) Jib or derrick cranes (but see the introduction to this Ex lanatory Note regarding railway breakdown cranes, crane lorries, floating cranes, etc.). Ji or derrick cranes are used for lifting loads and sometimes also movin them laterally. They consist essentially of a boom or jib which may be jointed to provi e adjustable reach and to facilitate workin The ho~stingcable passes over pulleys at the top of the boom and is driven b a winch. #he jib or boom may be supported by a vertical support, sometimes of considera le height. \ f g (9) Cableways and cable cranes, which are installations for transporting suspended loads. The consist of one or more bearer cables supported on fixed or movable towers, and a trol ey running on the cables and fitted with a mechanism for hoisting and lowerin the loads. They are used for handling materials on large construction sites, dams, bri ges, quarries, etc. ?' (10) Shi s' derricks, which consist of a fixed upright arm, to the base of which is pivoted a loa$cwying arm which can be raised by a pulley system. (See the introduction to this Explanatory Note regarding similar machines mounted on floating pontoons, etc.) (11) Works trucks fitted with a crane, which are designed for moving loads over short distances in factories, warehouses, dock areas or arports by means of a light crane mounted on a chassis of the works truck type, usually in the form of a box fiame, with a long wheel-base and a wide track to avoid overbalancmg. PARTS Sub'ect to the general provisions regarding the classification of parts (see the General Note to Section XVI), parts of the machines of this beading are classified in I. 1'Gt23 E2 The heading excludes crane lorries of heading 87.05.