DE6928444U - HYDRAULIC LIFTING EQUIPMENT - Google Patents

Description

PATENT Attorney DIPL.-ING. GERD UTERMANN

71 HEILBRONN. KAISERSTRASSE 54. POST BOX 1145

(NEW MANDELSBANK. OPPOSITE DBR HARMONIE) 8 O71 31/8 28 23 · TELEGR .: PATU ■ KONTENl HANDELSBANK HEiLBRONN AG. 23 ΟΘΟ POST CHECK STUTTGART 43O1S

Utility model registration K H. 22 D 4

July 17, 1969 TJt / Ke

Applicant: Mr.

Georg Markus Kramp

D-7 Stuttgart-ffreiberg Witikoweg 3

Hydraulic lifting device

The invention relates to a lifting device, in particular a

3 ~. hydraulic lifting device with a pressure cylinder that »F

is operated by means of an actuating element and with a lifting cylinder, the movable part of which is attached to the one to be lifted Attacks the load, and with at least one support foot that extends beyond the perpendicular dropped from the load application point next to or under the laat.

Such lifting devices, which are also referred to as hydraulic winches or jacks, are used to lift the various loads. They are required, for example, when transporting machines. The point of attack of the

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The lifting device on the load must be placed in such a way that the lifting device has a secure stand. Often just is difficult to reach, especially when the load is flat on the floor and the lifter is next to the Load must be applied and therefore its actual support surface is outside the load. They are lifting devices known to have the laterally protruding from him, firmly attached to him support feet. You can do this lifting device only start when the item to be lifted has a correspondingly large cavity or is already lifted «Solange 'If the load is supported on the lifting device, you can use the

or do not bring the support feet further under the load and thus do not increase the stability of the device. Such lifting devices equipped with protruding support feet firmly attached to the lifting device are themselves very bulky and take a lot when not brought in a lot of space. Because of their bulky design, they can also be used in confined spaces, for example in a machine store or between a machine and a wall, do not set up. Side of one smooth on the floor when the load is on top of the load, they always tend to tip in the direction of the load, since point of the lifting device ideally vertically below the

.The point of attack of the moving part is ₉ so that the arrangement is always unstable. When using the known hydraulic lifting devices for lifting machine tools in particular, serious damage occurs again and again.

A lifting device has now been proposed which has a support slide which can be pushed under the load having. This device has the advantage, with small dimensions, by pushing out the support slide to create a large base, including on the side

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Positioning to enable stable support conditions. for It is very suitable for small and medium loads. In the case of very large loads, however, prepare the storage and anyway The thinnest possible design of the support slide and the actuation of the support slide difficulties. Should he Slide can be pushed forward easily, so its storage must have a corresponding clearance. However, this leads to that the jack tends to move slightly in the direction of the required play, even when the support slide is extended to tip over the load. Also, because of its small dimensions, it can expediently be arranged in the middle of the device Support slides cannot be extended immediately when attaching to the corner of a load.

The invention is based on the problem of avoiding the above-mentioned disadvantages, including those below To achieve listed advantages or to obtain advantages of known devices and above all a 'iniverseil usable and yet with every application and design of the load to be lifted the greatest possible stability To create lifting device, which has the smallest possible external dimensions as a collapsed or collapsed Device and is still extremely stable and functional.

According to the invention, it is therefore only provided that the Support foot or the support feet is pivotally attached to the lifting device or are. The pivoting mounting of the to be brought under the load or next to the load support feet has the great advantage that the game of storage at stable training and easier operation of the support feet is much lower than in an in slider that can be used in practice even after a long period of time. The support base can also be used for pivoting storage

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can be arranged much cheaper on the device and structurally allows much more design options as a slide that can practically only be stowed in the bottom of the device and stably. Finally you can Provide swiveling support feet with a much larger distance from one another than the corresponding ones to be stored solidly Support slide and thereby the support base of the device significantly improve with small transport dimensions. With the appropriate position of the swivel axes, the device can also be used, for example when placing it on a corner of the Use the load immediately, even if the load is completely on the ground, with the support feet swung out to the side thus stable support conditions immediately at the beginning of the lifting process, which means that the device can be tilted. tion on the load is avoided.

The swiveling mounting of the support legs alone offers numerous design options that can take into account the respective application requirements. I ¹ Ur most purposes, especially when lifting modern, smooth-walled machine tools or other goods standing on the floor, on which the lifting device must be attached laterally, the pivot axis of the support feet is provided vertically according to a further feature of the invention. This allows a particularly stable storage with the smallest dimensions. In addition, the support foot can be used in different swivel positions without special holding devices, whereby the base of the device can not only be lengthened, but also widened. In every position, the support feet are suitable for supporting and can therefore also be swiveled into any recesses that may be present or next to the side walls at the corner attachment. In the case of a lateral arrangement of a preferably height-adjustable lifting claw, a support foot which can be pivoted about a vertical axis is expediently provided on each side of the lifting claw.

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If you want to create a universally applicable lifting device that is stable and easy to handle with small dimensions, not only the support feet but also the design of the lifting claw must be given special attention. Various lifting devices are now known, on the movable part of which there is arranged a height-adjustable lifting claw which automatically engages in the next lower level when released or which is to be fastened by pins or the like. However, the design of such a lifting claw requires a lot of space and therefore increases the dimensions of the <\ device considerably. Production is also complex and handling is not always easy. According to the invention it is now provided that the approximately L-shaped lifting claw has two outwardly directed pins in the area of the upper end, which run in vertical support grooves of the movable device part, the lower, rear end or approximately the entire back surface of the lifting claw on one of the supports both support grooves connecting transverse wall. In addition, a latching device is provided in which the lifting claw engages in stages. In this way, the lifting claw receives an extremely stable, height-adjustable support with the smallest dimensions. The L-shaped design enables a large support base with small dimensions. The required thickness of the vertical leg requires a corresponding distance between the actual elbow part and the lifting device. This distance is used by the support panels next to it to accommodate the support panels without further enlarging the external dimensions. Because the support tracks are next to the claw, a large distance between the support points of the claw is guaranteed. The forces are transferred favorably into the device, since the Eubklaue is not supported in the middle of the transverse wall, v / ie when hanging with a bolt, whereby the transverse wall bends

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can, but rests on its entire back surface or a few etens with individual widely spaced points on ϊ the transverse wall. As a result, the supporting webs carrying and / or forming side walls or the like are more favorable and, above all, stressed in the direction of their largest dimensions. The locking device can be designed in various ways. It is particularly simple to manufacture and therefore inexpensive if it is formed by bores provided at a short distance one above the other in the transverse wall and a pin provided on the rear of the lifting claw and optionally engaging in one of the bores. M.

In order to be able to lift very large loads, there must also be an exact and stable guidance between the fixed and movable ones Parts of the lifting device are provided, otherwise the hydraulic piston and its sealing and storage would be too heavily loaded and also the lifting part would tend to tilt and thus to tilt. Such a one Guiding sees Maxi functional in J? Oria. from SXs it tours before, which lie in a vertical, common plane with the axis of the lifting cylinder. You can then do the whole Pick up the load well and do not tend to tilt when extending or pushing in the device.

Other features. Advantages and aspects of the discovery are in the dependent claims and the following description of two exemplary embodiments given with reference to the drawings the invention treated

Ss show:

Pig. 1 shows the side view of the first exemplary embodiment of a measuring device with a raised load;

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Pigβ 2 one of the Pig. 1 corresponding side view, in | which, however, the essential inner parts of the device are shown in dashed lines;

Pig. 3 is a plan view of the lifting device according to the Pig. 1 and 2;

Pig. 4 shows a section along the line 4-4 in the pig 3 and 5j, but with the counter holder pivoted up;

j Pig. 5 is a section along line 5-5 in Pig. 2, each

but with a pivoted support leg;

Pig. 6 is an enlarged section taken along line 6-6 in Pig. 5;

Pig. 7 is an enlarged oblique view of the back of the \ lifting claw and

Pig. 8 the side view of a further embodiment of a lifting device with swiveling support

ζ " feet and other training of the lifting part and

the attack claw than in the first embodiment.

The first embodiment of a lifting device according to the Pig. 1 to 7 has a stationary lifting device part 1 and a box-like movable lifting part 2. These are guided vertically displaceably relative to one another by means of the guides 3. A commercially available hydraulic jack 4 is arranged inside the lifting device.

The stationary device part 1 has two side walls 5,

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which are connected at the bottom by means of the base plate 6 and at the top at the rear by means of a transverse web 7.

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The lifting part 2 has two side walls 8, a rear wall 9, an upper cover plate 10, a front vertical transverse j wall 11 and an inner, horizontal supporting transverse wall 12. The internal dimensions of the lifting housing 2 are chosen so that the lifting cylinder 13 of the jack 4 just finds space in it. The back wall 9 is like Pig. 2 and 4 illustrate not pulled down as far as the side walls 8, so that between the lifting cylinder 13 and the pressure cylinder 15 located connection 14 of the jack 4, in which the valve 16 is also located, sufficient Has space. Corner reinforcements 17 are provided between the side walls 8 and the front transverse wall 11. The reciprocating piston 18 is supported loosely under the transverse wall 12 with a spherical end face 19, as Pig does. 2 illustrates. The pin 20 of a screw 21 seated in the rear wall 9 engages in a groove 22 of the reciprocating piston 18 to to prevent lifting of the lifting part 2, but the necessary mobility between piston 18 and lifting part 2 to enable. For the actuation of the pressure piston 24 provided with each 23, a pedal 25 is between the Side walls 5 mounted pivotably by means of the axis 26. Its cross connection 27 is supported on the pressure cap 28 of the pressure piston 24 and comes to rest against a stop 29 provided on the cross-connection 7 in order to make the stroke of the pedal 25 to limit upwards. The pedal 25 has a protruding far beyond the rear edge 30 of the side walls 5 Step plate 31.

In order to give the device a high level of stability towards the rear, a counter holder 32 is provided. Pur its storage are on the side walls 5 backward protruding counter-

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holder arms 33 firmly attached, the ends 34 of which extend below the tread plate 31 of the pedal 25. At a short distance the counterholder axis 35 is provided from the ends 34. On this are between the counter holder arms 33 the counter-holder lever 36 is pivotably mounted. They extend to a rear step connection 37 and point in front "a Abstütaverbverbinding 38, the ends 39 of which extend over the

^! Place counter holder arms 33 and thus provide a support in the

cause the extended position of the counter holder 32. Because the counter-holder axis 35 was moved far to the rear, extends the counter holder 32 in the folded-up state, such as Fig. 4 illustrates, only up to the level of the upper edge of the entire device. Since the pedal 25 is back anyway can be reached without increasing the dimensions of the port also the counterwheel arms 33 correspondingly far behind let protrude at the rear, and thus achieved an extraordinarily low overall dimensions of the folded counter holder 32 large support length for the counter holder.

At the top of the side walls 5, a bow-like handle is hinged at 41.

At the front on the side walls 5, U-shaped guide profiles 46 with guide grooves 45 are provided. In these slide with the side walls 8 of the lifting part 2 firmly connected, in profile rectangular guide strips 47. This rectangle guide, whose axis is in a perpendicular plane E runs with the axis of the lifting cylinder 13, guaranteed even with extremely large loads an exact guidance between the lifting part 2 and the stationary housing 1, which allows edges, tilting or lateral stretching of the lifting part 2 prevented with an extremely simple design with security.

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In front of the guide profiles 46, small fixed support feet 50 are provided in the plane of the side walls 5, which are slightly beveled at the top at 51. Your leading edge 52 does not extend all the way to the front end 53 of the Lifting claw 54. The support feet 50 serve to bring the stationary base of the device as close as possible to the load embarrassed. In addition to the small fixed support feet 50, the bearing eyes 56 for the pivot feet 57 are on both sides of the device is permanently provided on this. The swivel feet 57 each have a widely projecting support arm 58, one around the vertical axis 59 has stable pivots 60 that can pivot. This is rotatable in the eye 56 and is as its upper end secured with a shaft locking ring 61 against pulling out downwards. The swivel feet 57 can, as illustrated in FIGS. 3 and 5 in solid lines, forward to the plant on the fixed small support feet 50 are pivoted. Then your foremost support point 62 extends considerably above the perpendicular L,

which from the point of application 63 of the load 64 on the lifting claw is fallen, in the direction of the burden and creates

such stable support conditions. The swivel feet 57 can

'but also in all intermediate positions at an angle to the outside

protruding - \ f as Fig. 5 shows, for example - and back can be pivoted into the position 57 'shown in dashed lines in FIG of the device. To enable this, the guide profiles 46 end at a corresponding distance above the Floor line 65.

The attack or lifting claw 54 has, as illustrated in particular in FIG. 7, L-shaped and has a lower, outwardly protruding attack leg 671 whose upper support surface 68 is very slightly inclined at the front outwards. The upper end 69 of the perpendicular

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Support leg 70 has two outwardly protruding pins which over the side walls 72 of the engagement claw 54 stick out. On the rear wall 73 of the support leg 70 is a protruding square pin 74 at a distance of the lower edge 75 is provided. For the height-adjustable Hooking the lifting claw 54, the lifting part has two vertical U-shaped slideways 76 at the front, which run from the front Ends 77 of the side walls 8, on these inwardly protruding welded, in profile square sliding

^s seemed 78 and the transverse wall 11 are limited. You bil

the support grooves 79 for the attack claw 54. Their width corresponds to the pin 71. In the transverse wall 11 are at a distance from each other locking bores 80 are provided, into which the pin 74 fits. The pins 71 of the attack claw 54 are introduced into the support grooves 79 from below. Because of the cylindrical design of the pin 71, the attack claw 54 pivot about the pin 71. When released, the locking pin 74 enters the next lower locking hole 80 a and the attack claw 54 is properly fixed in height. She lies down with her entire back 73 or at least individual points of this back surface on the transverse wall 11. The from the pin 71 at Loading of the contact surface 68 on the slide rails 78 transferred supporting force is in the shortest possible way in the side walls 8 of the lifting part 2 initiated and, since it runs in the direction of the side walls 8, of these also flawlessly recorded, as well as the compressive force, which

the rear wall 73 of the engagement claw 54 on the transverse wall 11

exercises. This force is also usually exerted on the transverse wall 11 in the area of the side walls 8 and thus on the shortest possible route without any bending of the transverse wall 11 supported. The design of the slide rails 78 and that for a perfect line of force in the lifting claw required rounding 82 and to support the

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Trachtllchen forces required strength S of the abutment leg B. 70 are coordinated in such a way that the load is as close as possible to plane B in which the guides 3 and the lifting cylinder 13 are located, can be pushed. The height adjustment of the lifting claw 54 requires so no or very little additional distance from the lifting cylinder 13. The lifting claw 54 is also in the width designed favorably, since it takes up almost the entire width of the lifting part 2. You can if necessary with ease against an Im attack leg 67 different shaped lifting and attack claws are exchanged. To secure against losing the attack claw 54 can in the side walls 8 pins or screws may be provided, which protrude into the support grooves 79 below.

The lifting device can be placed under a load like any conventional jack or any other conventional lifting device, which is supported on the upper cover plate 10. The lifting device can also be used like other simple lifting devices without support feet place it next to a load and then lift it in the conventional way. The special advantages for using of the lifting device according to the invention, however, consist in the fact that you also have one with a smooth, up to the bottom line Reaching wall 91 designed load 64 lift properly and can give the lifting device a previously unknown stability. To do this, one looks for oneself in the side wall 91 an attack possibility at a higher point, for example a protruding fixed pin or recess 92. The lifting claw 54 is pivoted slightly forward, so that their pin 74 lifts out of the respective ßastbohrung 8ü. J) the claw is then on a the height corresponding to the recess 92 is raised and hung in the associated bast bore 8u. Then the lifter can be pushed very close to the side wall 91 of the load, so that the attack leg 67 of the lifting

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Claw 54 engages in recess 92. To do this, the pivotable ötützfüße 57 initially pivoted backwards as far as necessary. When the lifter is in position has taken on the load, the pivotable support feet 57 are as far as possible in the direction of the load swiveled, possibly swiveled into cavities of the load or, if the lifting device in the direction of the diagonals is attached to a corner of the load, pivoted next to the side walls of the load. If the spatial conditions allow it allow, the counter holder 32 is pivoted back and the operator stands on the step plate 37, so that the lifting device, no matter how the support feet 57 are, secured against tilting movements in the direction of the load is. After closing the valve? 16 by means of the handle, the hydraulic oil is discharged by depressing the pedal 25 the pressure cylinder 15 promoted into the lifting cylinder 13 and thereby the lifting piston 18 and thus the lifting part 2 and the Attack claw 54 raised, which is extraordinary as a result of the hydraulic and mechanical translation of the pedaling force can easily be done even with large loads and is not hindered by edges of the guide. So can the Lift the load 64 slightly and damage it is avoided. Is the load by at least the strength of the support arms 58 of the swivel feet 57 are raised, the swivel feet 57 can continue to move if the ground conditions permit swivel under the load. If the ground conditions or the like do not allow it, the load is placed under the load Temporary support, for example a suitably thick piece of wood, relieves the hydraulic cylinder by opening it of the valve 16, 93 and thus lowers the load down to the support timber, the support arms 58 of the swivel feet pivot as far as possible under the load 64, so that its leading edge is in any case pivoted beyond the perpendicular L under the load is. Now, by stepping down on the pedal, you can move the load within the range of the lifting device

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as necessary and free the lifter as well let stand without stepping on the counter holder 32, and can even create freedom of movement f Swivel up around the jack and the goods to be lifted. A

[ Tilting the lifter towards the load 64 is

avoided because the load attack point 63 is no longer outside the support base of the lifter is on. Like Fig. 4

\ illustrated, stepping down the pedal 31 can also

when the counter holder 32 is swiveled up, because none Cross bars hinder the actuation of the pedal 25. This is particularly favorable for narrow spaces, but you can still do this by stepping on the counter holder & rme 33 of the lifting device Provide additional support at the beginning of the lifting process. Due to the pivotable design of the support feet 57 one is also in the exact position of the support points of the laets-side device support is not precisely defined, but can be accordingly the attack conditions, a lateral lip tilt of the device due to unevenness of the jetsus or the Soden firmness swivel the support feet 57 to where they find a perfect hold and the device a good one Provide security. Even so, the device has been folded up Condition extremely small dimensions. By

- * _ its cheap, compact construction and the functional

Location of the guides, the lifting claw support and the design -Her parts are also suitable for extremely large loads of many tons with small dimensions and low weight.

The lifting device 101 according to FIG. 8 works in principle in the same way as the lifting device of the first exemplary embodiment 1-7. However, it has a lower, stationary, inner, upwardly open, rectangular housing 102, over which a rectangular, open at the bottom lifting housing 103 is inserted, which by means of the upper support plate 108 protruding screw 107 on the reciprocating piston

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of the lifting cylinder 13 is screwed tight. Here, too, the 1-shaped lifting claw 110 is suspended by means of a pin 113 with a larger head 114 on the front wall 109 of the lifting housing in keyhole-like bores 145, optionally and thus adjustable in height. This device is intended for lower loads than that of the first exemplary embodiment, but also has a counter holder 32 which is pivotably mounted at 35 on the housing 102. By operation of the pedal 25, the piston is moved several times in the cylinder pressure and thereby the lifting housing 103 and (raised the lifting claw 110 as well. For the same purpose as in

the first embodiment also carries this lifting housing 102 laterally eyes 56 for the swivel feet 57, wherein Otherwise the same parts are provided with the same reference numerals. Here are only on the pin of the swivel feet 57 square 200 is provided so that the swivel feet 57 can also be swiveled from above with a key can. This exemplary embodiment also has the favorable support base which can be adapted to the respective conditions.

Although the invention has only been explained and described in more detail using two exemplary embodiments, it is not limited to that. In particular, a different type of support can also be used in the arrangement of the pivotable support feet

Guide between the stationary part and the lifting part or a different configuration of the height adjustment device for the lifting claw. The design of the housing and possibly also the location of the Support feet can be varied many times. Hydraulic lifting devices of a different construction can be used can be used or the support feet and guide and adjustment devices directly on the cylinder or piston a specially designed hydraulic jack.

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Claims (14)

It Il * * t t f ί »I t H t * I IR» · · HI 1 It II · »M Il I * * 9 · PATENTANWALT DIPL.-ING. GERD UTERMANN 71 HEIL.BRONN, KAISERSTRASSE 54, POST BOX Π45 (NEW BUILDING HANOELSBANK, OPPOSITE THE HARMONIE) «071 31/0 20 28 ■ TELEQR .: PATU · KONTENi HANDELSBANK HEILBRONN AO. 23 0Θ0 POST CHECK STUTTGART 43010 G.M. Kramp KH. 22 D 4 D-7 Stuttgart July 17, 1969 Ut / Ke - 16 claims for protection 1. Hydraulic lifting device with a pressure cylinder which is actuated by means of an actuating element with a lifting cylinder, the movable part of which engages the load to be lifted and with at least one support leg, which can be brought next to or under the load beyond the plumb bob felled from the lasite attack point, thereby characterized in that the support foot or the support feet (57, 58) can be pivoted on Lifting device (1, 101, 102) is or are attached. I. 2 «Hebegspat according to fes jjx-u ^ h 1, ^» d u χ- ö η g e— indicates that the support foot (57) is pivotable about a vertical axis (59). 3. Lifting device with a side, preferably height-adjustable Lifting claw according to one or more of the other claims «characterized in that that on both sides of the lifting claw (54) one pivotable about a vertical axis (59) Support foot (57, 58) is provided. 4. Lifting device according to one or more of the other claims, characterized in that that the pivot pins (60) of the support feet (57, 58) are provided on the side of the lifting device housing (1, 102) \ ./17 28444 K 14 * 22 D 4 7/17/69 Ut / Ke - 17 - f eyes (56) are pivotably mounted. , 5. Lifting device according to one or more of the other Proverbs, characterized by that the side walls (5) of the stationary lifting device part (1) are pulled up next to the lifting claw (54) designed as fixed, short additional support feet (50) \ det are. 1 6. Lifting device, preferably hydraulic lifting device I whose moving part is height-adjustable, when I preferably let go automatically in the next S lower level latching lifting claw is arranged, I in particular according to one or more of the other I sayings, characterized by I net that the approximately L-shaped lifting claw (54) I in the area of the upper end (69) two outwards I directed pin (71), which in vertical I support grooves (79) of the movable device part (2) · 'Run, and look at their lower rear end or I of the entire back surface (73) on one of the two I support grooves (79) connecting the transverse wall (11) "") and that a latching device (11, 80, 74) is provided is, in which the lifting claw (54, 74) engages in stages , 7. Lifting device according to claim 6, characterized in that that the locking device of a small distance one above the other in the transverse wall (11) provided holes (80) and one provided on the rear side (73) of the lifting claw (54), optionally is formed in one of the bores (80) engaging pin (74). ./18 1 I I t I 1 I »I I K H. 22 D 4
17.7.69 Üt / Ke - 18 - 8. Lifting device according to one or more of the other claims, characterized in that that the movable lifting part (2) is a housing closed on all four sides and at the top, which engages via the lifting cylinder (13) and is supported on the lifting piston (18). 9. Lifting device according to one or more of the other claims, characterized in that that the cover plate (10) overlaps the support tracks (76, 78) forming the support grooves (79). 10. Lifting device, in particular according to one or more of the other claims, characterized Ichnet that the movable lifting part (2) on the stationary lifting device part (1) by means of sliding guides (3i 46, 47) is guided in a common vertical plane (E) with the axis of the lifting • i | Cylinder (13) lie. 11. Lifting device according to one or more of the other claims, characterized in that the sliding guides from the box-shaped Lifting part (2) placed on or formed on this, rectangular in profile guide strips (47) and rectangular guide grooves (45) provided on the side walls (5) of the stationary device part (1) are formed. 12. Lifting device according to claim 11, characterized in that that the guide grooves (45) in TJ-shaped, on the side walls (5) of the stationary : l lifting device part (1) arranged guide profiles (46) are formed. ./19 28444 f I t I * t Il 1 * It It • I «II t II! I / _a I t · I I I ♦ · * S K 14. 22 D 4
7/17/69 Ut / Ke - 19 - 13. Lifting device according to one or more of the other claims, characterized in that that the guides (46, 47) by the thickness of the swivel base arms (58) above the standing surface (65) end and the swivel feet (57, 58) under the guides (46, 47) are designed to be pivotable. 14.Lifting device with a counter-holder that can be swiveled backwards onto the floor and a pedal designed as a rearward-reaching actuating element for the pressure cylinder, according to one or more of the other claims, characterized in that that the counter-holder axis (35) in the region of the outer end (31) of the pedal (25) below this lies.