LIFTING DEVICE FUR SLIDING FORMS FOR THE CONTINUOUS PRODUCTION OF CONCRETE-WOUND

The invention refers to a lifting device for sliding forms for the continuous production of concrete walls, which is mobile along at least a Gleitschiane, whereby with the sliding rail cooperating blocking organs are intended, which exhibit two coaxially housings arranged to the Gleitsehiene, which are separate from each other by, likewise coaxial thrust ring, whereby a housing is designed connected with the formwork and the second housing as supporting housings for the first housing as well as is attached inside each housing Klemmbaeken, which affects alternating the sliding rail, whereby furthermore the pressure high pressure fluid of an affecting the thrust ring ensures a lifting of the housing connected with the formwork. With well-known devices the Blocklerorgane was not very effectively, in particular it l0 always somewhat late regarding the respective end position of the housing was switched on, which a Zurückweichen of the formwork caused. This Zurückweichen the formworks supporting housings could vary with the different sliding rails, whereby more frequent placing behind became necessary by the operator, which brought back a time delay with itself. The purpose of the invention exists in a removal of these bad states, which is reached above all by that the supporting housing is subjected to a low pressure fluid which is at lower pressure than the high pressure fluid, which works with the printing drain of the high pressure fluid. In accordance with another characteristic of the invention each of the two housings consists of a square, welded body, whereby the clamping jaws consist of several in Drauf view trapezoidal parts, whose convex rear side between retaining screws is held, against what the front forms a sharp cut, in order to work effectively against an inadvertent the Zurückrut lifting device, whereby furthermore the clamping jaws are held by a feather/spring in working position, on the one hand at the body, on the other hand over a disk at the clamping jaws fall themselves. Appropriately thereby two retaining screws are assigned to each clamping jaw part at the top side, which are designed as adjustable attacks. A sliding form is created by the invention, with which automatic levelling is caused and an extraordinarily rapid elevation of the formwork is ensured within 15 s. The sliding form can be operated in addition with a possible power failure with a hand pump and it exists also the possibility of loosening the formwork from the before poured parts for interruption of the job this can at Sonnoder holidays, when there is danger of frost or for other reasons than necessarily proving. Below the invention is more near described on the basis of remark examples represented in the designs. Show: Fig.1 an axial section of a device according to invention; Fig.2 a plan view on Fig.1 in accordance with the line A-A; the Fig.3 to 5 schematic opinions, which illustrate the Funktions3S cycle of the device. The two principal purposes of the invention exist in the creation of a device, with which the blocking of the clamping jaws takes place instantaneously, so that the material operational sequence of the movement of the formwork is same or nearly equal to the theoretical operational sequence of the movement, whereby the thrust ring is in this way double acting implemented and a regular upward motion of the Sehalung without dead time is ensured. The device consists according to invention of two similar housings --A and B--, those coaxially to the sliding rail --1--, which is fixed in longitudinal direction, lie. Each housing consists of a hollow, welded body, the one surface area --14-- , those possesses with the body --2-- by screws --3-- is connected and in the center an opening exhibits, for 4s those the sliding rail --1-- free passage grants. In the top the body points a housing head --4-- up, the plate perforated from one in the center --5-- insists, on the one metal ring --6-- with circular beginning --7-- welded on, within the ring out-stood. The circular beginning --7-- serves a Splralfeder --8-- as seat, which one to the sliding rail so --1-- ring lain coaxially --9-- surrounds, whereby this ring by a second ring --10-- one steers. A part of the ring --9-- a circular shoulder partly enters the housing and points --91-- up, those the position of the spiral spring --8-- controlled. Nr.343337 the two rings --9 and I0-- causes the Entriegein of the KIemmbaeken --12--. The ring --I0--, see around the housing essay --31-- on small balls to turn knows, exhibits themselves on his inside two inclined levels, on two, with the ring --9-- positively connected studs --92-- support. S under the housing head --4-- are clamping jaws --12--, in this example there four, the one convex rear part --121-- and sharp signing leagues a front part --122-- exhibit. As Fig.2 illustrates, these clamping jaws are around the sliding rail --1-- arranged and is completely simply into the housing body inserted, where it with their rear part --121-- between upper and lower retaining screws --16--, and with their front part by a spiral spring --13--, itself the I0 on the one hand on a circular recess --141-- the Gehäusegrundfläehe --14--, and on the other hand on a leadership disk --15-- supports, in position to be held. The two housings --A and B-- and the clamping jaw angle is directly trained --122-- that the clamping jaws are loosened during the upward motion of the Hehevorrichtung, during it is in such a manner arranged in the contrary case the sliding rail --I-- get jammed, if the lifting device introduces one iS return motion. This means that the clamping jaws a progressive movement of the lifting device along the arrow --F-- makes possible, but the Rücldaufbewegung in accordance with arrow --G-- prevent. The angle of this K] it emmbacken is thus crucial because by its situation eccentric in relation to the transverse axis of the clamping jaws it causes that the clamping jaws are pressed on the sliding rail and thus general blocking of the Hebevorriehtung to ensure. Between the two housings is a thrust ring --C-- planned, which guarantees a moving of the formwork. The thrust ring --C-- consists of two parts --17 and 18--, those mutually in a guidance due to of segments --19-- liquid slides, whereby one of the parts of the thrust ring and here in particular the piston --18-- with the lower housing --B-- is positively connected, during the cylinders --17-- with the upper housing --A-- is positively connected. The piston --18-- is with the housing --B-- by a simple screw connection --20-- connected, during the cylinders --17-- with the housing --A-- by means of pins --21-- is connected. The cylinder --17-- consists of two parts, of the welded thrust ring body --] 71-- and the worked on Kolbenffihrung --172--, those coaxially to the Gleitsehiene --1-- lie. With its movement the piston coats --18-- the volume --23--, which laterally inside by the wall --172 '-- the Kolbenfilarung, outside by the wall --171 '-- the Druekringkörpers, in its upper Teü by the paragraph --172 "-- the piston guide and in its lower part by the Abdeekung of the chamber --22-- one defines. At the thrust ring body --171-- is the piston guide --172-- with their paragraph --172 "-- by means of screws --24-- and the chamber cover --22-- attached. The volume --23-- is in two chambers --231 and 282-- by the pistonhead --181-- divided, its Oberund lower surface the liquid pressure alternating to affect knows and thus a Doppelwirkung of the thrust ring ensured. During the production of silos e.g., a certain number of sliding rails becomes on their periphery --1-- and naturally liftings device attached, so that the formwork is symmetrically lifted in different, angularly arranged places. The besehriebene above lifting device becomes at a gesture]] --26-- attached, also a part of the formwork --27-- supports (s.Fig.3 to 5). 4s it proves thus as necessary that all thrust rings exhibit the same movement, if one liked that the formwork in each setting to the same height is. The lifting device functions as follows (Fig. 1). Since it concerns a cycle, one proceeds from the hypothesis that the chamber --231-- the whole volume --23-- it constitutes and is filled by the fluid which is at high pressure and that so from there it the chamber --232-- reduced to their minimum value is, there the top side of the pistonhead --181-- practically to the paragraph of the piston guide fastens. The clamping jaws --12-- the housing --B-- are against the sliding rail --1-- wedged and the housing --B-- serves the housing --A--, which is to be shifted, as support. One reduces Nr.343337 now in the chamber --231-- dominant pressure, then Kraft become, due to the chamber which is at small pressure --232-- , more largely than those, those works by the fluid of the chamber --231-- on the pistons one expenditure-practices. There now the housing --B-- by the clamping jaws --12--, which partly press themselves against the sliding rail, in position, and there the piston is held --18-- with this housing positively connected is, can itself only the cylinder --17-- and the housing --A--, with which it is positively connected, upward to move. It comes thus to an upward motion of the housing --A--, which was made possible thereby that the clamping jaws --12-- this movement do not obstruct. This zykiische phase is illustrated in Fig.3, which under low pressure the standing and upward to shifted housings --A-- shows, whereby the housing --B-- by its, against the sliding rail --1-- wedged, clamping jaw --12-- is supported. This upward motion of the housing - A-- , during that by the fluid the B.P corresponds to the first impact of the thrust ring. expenditure-practiced Kraft, the less heavy part, i.e. part--A--, lifts. In the second phase against it, in which the rack and the formwork must be lifted, Kraft produced by the fluid H.P are the propellant. Becomes by the opening --28-- into the chamber --232-- again the fluid H.P imported, then causes the pressure under the pistonhead --181-- an upward motion desselhen, whereby it also formsehlüssig the connected housings --B--, which to camps and the formwork with see pulls. While this course of motion, which corresponds to the second impact of the Druekringes, the fluid becomes B.P cares --232a-- out of the thrust ring displaces. In addition becomes during the upward motion of the housing --B-- the housing --A-- by clamping jaws --12-- in position held, Zurückrut in accordance with arrow --G-- prevent. This second phase is clearly illustrated in Fig.4, whereby it is to be seen exactly that the piston --8--, the housing --B--, the rack --26-- and the formwork --27-- an upward motion went through, while the housing --A-- , there it stood quietly by its clamping jaws --12-- in his position one blocked. It is likewise evident that the K Tn it B.P. --232-- their minimum volume exhibits and that the clamping jaws of the housing --B-- the sliding rail --1-- do not affect. Becomes again the hydraulic pressure in the chamber --231-- reduced, then one returns to the first function phase, during these the housing --B-- by the clamping heels and the housing is blocked --A-- itself by effect of the fluid B.P on the cylinder --17-- moved. This new phase is represented in the Fig.5, where it is completely clearly evident that the Klemmbaoken --12-- the housing --B-- against the sliding rail --1-- are wedged, while the clamping jaws --12-- the housing --A-- repealed to be set, around the upward motion of the housing --A-- to make possible. As previously mentioned, the clamping heels make possible --12-- the housings, but these hold back an upward motion of the lifting device, if Zurückrut threatens. If one wants to bring however the liftings device into a low position, one avails oneself from two rings --9 and 10-- existing deblocking devices of the clamping jaws. This deblocking procedure takes place via an operating organ --25--, one rotating the ring --10-- caused, that, during its rotating motion, the ring --9-- by Stifschrauben --92--, with which it is positively connected, into a vertical downward movement it shifts to that its lower end --93-- the clamping jaws for their elimination and the spiral spring affects --8-- therefore one compresses. In this position the clamping jaws are not any more against the sliding rail --1-- wedged and the lifting device can be brought into a low position, whereby this deblocking procedure must naturally take place on the two housings. So that besides the different liftings device always are on constant height, a stop ring becomes in a certain height --29-- attached, that by a nut--30-- it is fixed in such a manner that the thrust ring in its motion by the attack of the protective cap --32-- the housing --A-- against this ring --29--, one limits. This device is however only then essential, if the pressure ratios are very high, e.g. over 50 kg/cm2. If the Druekverhältnisse is however rather weak, the lifting device comes only to the attack. These rings are attached naturally with all sliding rails on same height. In this kind more frequent manual adjustments are avoided by the operating personnel. Of course the invention is not only limited to and the represented remark example stated above, on whose basis further variants can be realised in the context of the invention.