DE1932369U - LIFTING DEVICE, IN PARTICULAR FOR VEHICLES. - Google Patents

Description

Lifting device, in particular for vehicles

The invention relates to a lifting device in particular for Fahra-Piuge, with several, telescopically arranged one inside the other. and uerschisfabaren hydraulic cylinders and a hydraulic KoIbBn _9, and a control device for feeding or "discharge of a Druekmit-fcelSo lifting devices of this type is known in nrnn Uierkstattao and garages as HJlfsrait- tel for the maintenance and repair uon Kia.ftfahrzeugen or the like," The previously known lifting devices operate entujedsr pure t! echanical) ₉ with a tooth butt ^ tange ujird moved _s pneumatically hydraulically untet using compressed air or l / erioendung ainer hand · = or motos-betriebene.n _a üxpumpe

The application of mechanical and pneumatic Hebevorrich "is obligations beg to cases: cenHt ₄ where it. all that matters is lifting one side of a motor vehicle. For larger Pilan = · days or repair work, yoruiisgend hydrauli · = is terminated. see lifting directions. wherein often rnshrere ₅ from each other, HS separate lifting devices on the su-increasing vehicle? can egg, fen. But while it comes down to _five that the heights of the individual l / orrichtungan exactly raiteinander match.? mgs in de? - <usually not possible due to a lack of suitable control devices ». On the other hand, the necessary use of won rags is cumbersome and tigyere::

The present invention therefore lies in the recognition of this Um = the task was to create a lifting device which the disadvantage of the known devices verraeideij, relatively cheap in the? Manufacture and accurate and simple in its vision is "

The invention is \ jon of the known physical phenomenon ausj, DAO a liquid in einera U-tube in the one leg of this tube increases when _t is applied to the other leg asn a Druckgasatraosphäre, * which is greater "than the pressure of Urngebungsluft"

Using this phenomenon on his lifting device. _{of the type 5} admonished at the beginning, therefore, according to the invention, a lifting device which is characterized in that the control device has a storage container for the pressure medium in which a bell-like housing, which can be closed at the top by a shut-off valve, protrudes at its bottom has a through "flow opening" that the space between this housing and the container wall can be closed by inlet and outlet valves (closing valves) for a pressure gas _5, in particular compressed air, and that means for actuating the closing valves and the shut-off valve are provided in a certain lateral order are _o

The room will be used for the storage of the storage container and the

The liquid pressure medium flows according to the above-mentioned physical principle, if exposed to the sealing housing of a bri phere located therein and at the same time the shut-off valve is opened. 2 * 80 oil through the housing into the cylinder chamber and lifts according to the pressure of the pressurized gas atmosphere ά <& η hydraulic piston ars * The new device does not require an oil buffer in particular for flying repair teams Z ₀ B * in the disaster operation of Worteil

According to aines * Jeiterbiiduni} of the finding · should distant? be DA8 lifting υηά lowering the load depending uont seconds = spawns the load should BrToIgBn This is particularly * · töünschtü TiSil it can happen & $ _& daö the hydraulic piston un "charged to quickly lowered barren * bsi to high GasUruck is lifted too quickly, do because of the spray. Because the device * may be undesirable *

For this reason, according to the invention lair'd \? Orgeschlagen _& glockenartiije that the housing has an ars a valve »sitzsrtigs fiusdrehung closing ends Malssö ^ sehfiitt ge.rlnge.ren Durchiöeassrs at its upper end and DSSS within the housing open at the bottom a Naeh Ho'hlkolbsn of a smaller diameter than that of the housing on one end of the one on the bottom of the housing

The compression spring held in a standing position is closed and in its sfcisnijiandung it has an exit opening of very small dimensions.

In this design, the result is _s tHe the pressure medium at normal gas pressure at the side of the hollow piston can penetrate through the open valve in the cylinder chamber "^ sU the GSS = pressure too strong j as the hollow piston against dia yeniilsitsartige recess is pressed so that the u ^ uokmitiel forced ₉ sBinen • leg by dia small flow opening in the Stirniaandung of HohlkoXbens to take "the hollow piston then uirki as a brake"

Conversely, when the hydraulic piston is lowered, the hollow piston with its rear edge on the modes of the bell-like housing is on "if the pressure of the pressure medium flowing back is stronger than the counteracting force of the compression spring on which the hollow piston rests." In this case, the pressure medium is forced to take its meg through the small opening of the hollow piston, in normal case _fl black red ... the hollow piston carried by the compression spring along with the recess and the shape of the bell-like housing, so that the pressure medium flows freely on the hollow piston can"

Another revision of the device according to the invention. taird _f achieved that the Kiittei gaü- for actuating the pressure 'and a Druckraitteiuentile with' the top of the bell & Ε.ηύ = ·

ßeMäusss uer-bimdeaes Uentilgshäurse includeζ — in de © ei «the shut-off valve for the D? uekraiitei.'tf @ s§ @ © efcQfö &? fsäsifb © 2.asfea HsupivenfeiXstößel axially'movable unü cfsrsfiöss §shaltsn and -f pst rai t one at its free end at ^ eb ^ aöh & en Ssh <tienkh @ at bunden is ₉ and the main fc ^ entiXstsei at ei-n-sm iß ! ifQ arranged symmeferischerä ;, fcopfa ^ tigen {Cu? 'venkÖ? pe? supported is _{8 of} the bsi rotation the main "& nt-i Istdßels' middle-of the Schutenkhabsls after overcoming a gsiaissafs dead play eifm backkuQsbawagung the main valve opening as atüis-kt ₅ that Öas housing nsltsinandar di4i'chle connection connections ^ ^ has uckgsssufuhrleityng fikrains stim Vorsatsbe holder abgehsndö Druckgasahfuhcleiiung sqvjz® feet £ · the "and further that in · Ucntilgehäuse zursi SchlieOiianfeile the _s are yerbindungskanäls angsordnst your federbslsstete Stö8el radially in a dss by a recess formed HaupfcvsniilsiöBels Raug protrude and? verbleibafidsn as Bsfeetigiingsnacken Resfcqu section of the main valve tappet assigned SiRd _{5 of} the dead play when pivoting from its zero position causes an opening of one or the other SchiisSventils _o

This At # ü {iJ? Un'93fora enables all with a single lever _s the Schui & nkhebsi «dusOhsuführeno ϊ.η his Worfnaistsliung all l / erafcils are closed '

very rotation within the dead game sfe ^ Örat das

in the tiG ^ advisory board? ein una puts the ds.ri «baf indihe middle under Drusko. When ^{the Schuienkhsbeäs is turned 1} », the main valve tappet of the Abspsrrven & ilss ays of its ¹ Ssh3

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retracted position, the pressure medium can now flow freely into the cylinder chamber. ^f \! acfi reaching the prescribed cubic height miso the swivel lever uiieder brought back to the initial position ο ο the. If you can lower the hydraulic piston cylinder 2u, the swivel lever is first turned a little in the reverse seal so that the closing valve opens. mife det- ambient air »erbi-ndeto The pressurized gas can only» escape

Uiürds one does not adhere to the temporal f "o.lgB of the outflow of pressurized gas and pressure medium ^ but let it off at the same time- = ssn _{9 it} could happen, ö & ß / qas enters the cylinder _{chamber 9} thereby pressure medium usrdiängi and the hydraulic piston etuia in its position left In this case the cylinder would first have to be vented, which is of course undesirable »

The following is an exemplary embodiment according to the invention close to the drawing · explained and 2u> ar seigens

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Figure 1 _o one hoist according to the invention

in side view and partial longitudinal section

Fig. 2 shows an enlarged detail of the device in longitudinal section

Figure '3 is a control unit in longitudinal section according to the line! XX-XIf isv Figure 4 and _o

FIg ₄ 4 a cross section according to de? Line iW-IV in Figo So

Figure "1 shows the general structure exerts erfindungsgemaoen lifting = uorrichtungo ^ hese consists of at least two taleskopiseh inein" = belts run hydraulic cylinders 1 _e 2 and a hydraulic hollow KOLBON 3 ainera mounted support towers 4 _O The Zylin · = 2 and de ? Pistons ' Δ _{are provided with stops 5 5} 6 at their lower ends. » The upper ends of the cylinder 1 have radially protruding rollers 7 arranged on the side so that the device can be moved on parallel rails.

The cylinder 1 is from a cylindrical reservoir 8 for? · Surrounded the pressure medium ,, Durchmesset dsssen by as much größsr ISFE _e ®is one the Zylindees 1 _r they Dsuckmifetel for parts 2 and 3 requires iyi? D _o The reservoir 8 is uöllig disht "gesehlos sen. At the point 9 it has a screw cap for draining. -;

/ Jf ■ J? s J

On the lower part of the cylinder 1, a valve housing 12 projecting outward through the storage container 8 is attached to the wall thereof and is flush with the interior of the cylinder 1 through an opening 13. Inside the storage container 8 there is a "bell" -like housing 14 _{O which is attached to the valve housing and protrudes downward}

Fig '2 shows the arrangement of this housing 14 in υ ergrößer-tem IYIaG- = stabo As the drawing recognize IMQt _v ^ n, the housing its upper end, a neck-like portion 15 eingazogeh.en ge ~ lesser diameter than the rest of the housing part ,, The housing is closed at the bottom by a base 17 provided with a passage opening 16 and protrudes into the pressure medium 18 in the storage container in the manner of a diving bell.

The upper neck-like drawn-in end 15 opens into a cavity 19 of the valve housing 12 '. In the valve housing 12 there is a main valve tappet 20, which, as will be detailed below, is both axially movable and rotatable about its longitudinal axis is arranged. At one end of this Haupty'entilstöf3el 2o has a valve 21 and divider verschliefet with this the through-opening 13 to the interior of the cylinder 1 _O

The inner wall of the Ausdre formed by the neck portion 15 hung 22 is designed as a valve seat, Wit the distance below this valve seat 22 is a hollow piston within the housing 1Λ

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arranged s whose Stirniaandunej 24 ben? Valve seat 22 assigned is. The pin landing 24 has a central passage opening 25 of very 'small diameter' "AjV over I'nn'smseite 'the forehead" dung 24 dss Hohlkoibens 23 gripping a ^ m 'Ooden 1? of the housing attached * standing back.spring "'2Cj" and' holding the hollow piston 23 in a position of equilibrium between 'Öe'm valve seat 22 and the Floor 17, · ·.:; · ■ ·,. ·· ■

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Fig «3 shows in? enlarged TfIaDs-tab a longitudinal section. by dgs UentilgohausB 12. Then the iiauptyciritilstil 20 is supported with its valve disk 21 against a compression spring 27 at one " Turning 28 inside the Veritilg'ehäüses 12 off and is in in its rest position against the valve seat 29, pressed parts 21 and 29 together form an A'bspesTöentil 'for the pressure medium to operate the lifting device

At its other end _5, the valve housing protrudes, the main valve is 20 ml. Near this point has the Uantilgehäuse 12 is a recess in which a pot-like, concentric zura "Hauptventiistößel 20 arranged Kuryenk'örpsr" 32 used 31} _'t the sine symmetrical Führungskurue 33 "owns"^"■: At this Führungskurue 33 is a pin 34 ^J gsführt _s the 'across the. Happen valve tappet 22 moves out of this position on both sides

the main valve tappet 20 is retracted axially as a result of the guide movement of the pin 34 and the shut-off valve 29, 21 opens

As the drawing farner shows. the valve housing 12 has a larger · at its outer part. Gauge - .. 35 * are in the area of this cross section 35 at de'r ■ AuOgniuandung of l / entilgehäu = · ses connection openings 36 ;, 3? and '38 planned'. The connection opening 36 is used to connect the pressure gas line .1L ₉ as. Pressurized gas discharge line from the valve housing 12 to the storage container 8 leads from this connection opening 36 _S, which can be provided with a connection geuiinde, a narrow connection duct 33 leads to the connection opening 37, - this connection opening 37 is closed with 'einetn hollow stub 40. »- to-the Druckgaszulei a" tung = 41 (Figure ₉ -I) connects _f - die.mit a nicht.gezeichneten DruakgasqueiiSjj 2 "B ₀ connected to a compressor, is," the ignition of the Ueffbindungskanals 39 in the connection opening 37 is closed by a spring-loaded & constant closing valve 42, whose plunger 43 protrudes into the area of the main valve oil 20 radially into the interior of the valve housing. The main valve plunger 20 has a recess at this point ^: the Aet "that only a radical = · 44 ^ cross-section remains as the drive cam; _t for the plunger-43 served Ulird the main valve stem 20 is rotated by means of the -Schwenkhebels 30 so the plunger 43 is radially gedru 'outwardly ckt ₉ so that the closing valve! 42 opens »

• 12 *

Gsgenübe ... d8r connection opening 37 is a further spring-loaded closing valve 46 arranged in a discharge 45 in dera υοη of the opening 45 and a screw connection 4? dös Schließven4 TILs space 46 opens a 4-8 formed coming from the AnschluBoFTnung 36 Verbindungsksnal 49 _O Jensaits of SchlieQwentils 46 opens directly below eng l / entilteliers a l / erbindungskä · »nal 50 _s to be the completed with a 51 Filtertuerkstoff = An · final opening 38 leads. This connection opening leads into the open. The plunger 52 of the closing valve 46 also protrudes into the interior of the valve housing 12 in the case of the closing valve 42 and can be grounded in the same way as the plunger 43 is moved by the main valve plunger reverse turned luirdi

The operation of the new lifting device is as follows

The pivoting lever 30 is initially in its rest position "The shut-off valve 21" 29 and the closing valves 42 and 46 are closed, the achu / enkhebei 30 is initially moved a small amount in one direction. "The guide curve 33 is like this _s designed that it the Hauptventilstööel 20 a ge = · · misses lost motion with respect to its closed position allowed the Hauptuentilstößöl 20 so uiird etmas rotated about its longitudinal axis without departing ^ vers.chieben already axially * This rotation is sufficient to _s JBdoch the Schließuentil 42 to open »Compressed gas now flows out of the compressed gas supply line 41 through the connection

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channel 39 into the compressed gas discharge line 11 and from there into the storage tank 8 eiru The pressure medium in the storage tank ο ZB ₀ oil is therefore a? Exposed to pressurized gas atmosphere »Compressed air, for example, can be used as the pressurized gas»

For further pivoting of the üchujenkhebsl 30 down to the main ven " tilstöDel according to the characteristics of the guide curve 33 sucked back and opens the passage opening 33 to Cylinder 1 »The pressure medium 18, which is under gas pressure, now flows through the bell-like housing 14 along the hollow piston 23 the neck part 15 and the valve housing 12 in the cylinder 1 and lifts the hydraulic piston 3 «

Is the gas pressure? U high in relation to the load to be lifted _? so the rising pressure medium presses the piston 23 against the valve seat-like recess 22 of the housing 14, the pressure medium is now forced to flow through the small passage opening 25 in der_ Stirnujandung 24 of the Hohlkolb.ens 23 ¹ , whereby the lifting speed of the hydraulic piston 3 is strong is reduced.

When the lifting process is finished, the Sehsuenkhebei 30 is swiveled back into its starting position. "At first the valve 21 ₉ 29 closes and thus prevents the pressurized fluid from flowing back into the storage container _{o Then the SchlieGucntii 42 closes} and thus interrupts the supply of pressurized gas into the storage container Die

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The pressurized gas atmosphere burdening the pressurized medium is retained

The lowering of the piston 3 takes place in that the? Swivel lever -30 initially in the opposite direction around a sering αχτά _ο The main valve tappet 20 initially remains in its blocking position, but actuates the closing valve 46 in the opening direction by its rotation. The pressurized gas in the storage container 8 can now flow out into the open through the pressurized gas discharge line 11, the connecting ducts 40 and 50 and the connection opening 38.

The pivot lever 30 is now moved further, with the main valve tappet 20 being sucked back axially and opening 13 of the cylinder 1 free. Is the pressure medium flowing now? in AEEN reservoir 14 back and the piston 3 descends *

If the lowering of the piston 3 takes place too quickly * does the pressure medium flowing back then press the hollow piston 24 with its lower edge onto the base 1? glackenartigen of the housing 14 * so that the pressure "medium is forced in turn to take his Jag _s through the small through" fcrittsöffnung 25 in the Sürnujandung 24 of the hollow piston 23rd This greatly slows down the lowering of the body 3 »

The new device can thus be operated with a single gen swivel lever in any desired way and has

In addition, the lifting and lowering speeds are automatic depending on the load. rivers.

In the context of the concept of the invention, these are such modifications? Lifting device conceivable. So it is also possible to use the supply · = holder and the control device of the lifting device with Ab = stand v / to be arranged on cylinder 1, for example at a point * which is easily accessible. It is also possible to participate in a tax connection device to connect several lifting devices are operating at the same time "

All Rerkmais in the above description and / or drawing should as far as the known prior art does not preclude, by itself, souiie in any combination regarded as essential to the invention Aerden _p itself dannj, they do not menn expressly in the claims are included "

Claims (1)

8-24.11.65 ^ Protection claims Κ Lifting device especially for vehicles rait inehrüren ^ teles = cape-like nested and displaceable hydraulic cylinders and a hydraulic piston souie a control device for the supply or "discharge of a pressure" means characterized by "ds8 the control device has a storage container (8) for the pressure medium ( 18) into which a bell-like housing (14 / ρ protrudes at the top by a shut-off valve (21 ₉ "29), which has a flow opening (16) at its bottom (17)) room stuischen this housing {14) and the Bühälterurnndung (8) dureh to »and Abführuenti.le · (Schiießventile 5 (42, 46) _s is lockable for a pressure gas, in particular compressed air, and that means for! operation of the closed» bzüi _e discharge valves ( & 2 ₁ 4ö) and the shut-off valve (21 ρ 29) are provided in a certain chronological order «, 2ο lifting device according to claim 1 dadurchgekenn "draw t _t glGckenartige that the housing. (■ 14) at its upper end an adjoining one ventilsS.fc.zarti.gs recess (22) has the neck portion (15) of smaller diameter on = ·, and that inside the housing (14) a downwardly open hollow piston (23} of smaller diameter than that of the housing (14) on one end of a compression spring (26) held upright on the housing base (17) ? uht and in his. Sti? Nmsndüng (24) one, middle-passage · = Opening {25) has a very small diameter '* Lifting device according to claim i öäer 2 characterized in that the iliittel 2u? Operation, de? Öruckgas ~ and Druckmitteluantile (42 _S 461 21 j 2 ^! J) comprise a valve housing (12) connected to the upper end of the bell-shaped housing {14), in which a spring-loaded spring-loaded valve is provided for the shut-off valve (21p 29) for the pressure medium (18) 'he is werbunäen HauptventilstoOel (20) sKiai held movable and rotatable and .fost having mounted at its free CnDe pivot lever (30) "DAB det Hauptventilstbßei (20) on one in Uentilgehä" use {-12 5' arranged _s synsme tr Ischen _} pot-like cam body? {32) is supported, the bsi rotation of the valve valve (20) by means of the rocker arm (30) after overcoming a certain dead play an axial retraction movement of the main valve tappet {20) causes the Uontil housing (12) with each other by connecting channels (39 _- 49 ₉ 50) connected Änsohlußöffnungeneiii (36 ₅ 3? and 38) for an oil pressure supply line "(41) ₉ for a pressure discharge line (11) going to the storage tank (B) soiuie for the surrounding air and that in the Uör ^ tiigehäus (12) distant? sujei closing valves {42 _Ό 46) for the Uerbindungskanäie. (39 ρ 49 _s 50) .are arranged, whose spring-loaded stems (43 ₅ 52.) radially into one of an exit near the main valve size Xs C 20) protrude and the operating cam VBffbliabenen ^ estqu & ü-SDhnitt (44) des HauptyentilöfcöOöis (2o) are assigned to the 'at üei'schiüenken from its zero position already in the range of the dead game, depending on its direction of rotation, an opening another closing valve (42 or »46} causes 4 4, lifting device according to Ginsm of claims 1 to 3 dadur cn characterized y daö dia control device including the storage container (8) with .Abstand vora cylinder (1) arranged at a suitable point and connected to the cylinder (1) by a pressure medium line 5 »Hebeuarriehtung according to claim 4 thereby marked * • indicates that the control device with several υαη separated from each other, but a common Hebeuosrieh- = hydraulic cylinders forming the device » For 3 as el ftlwarez: PATEWTAM