WO2008014748A1

WO2008014748A1 - Pivoting foot for supporting a support device or lifting device

Info

Publication number: WO2008014748A1
Application number: PCT/DE2007/001249
Authority: WO
Inventors: Holger Birkholz; Michael Grän; Robert Miltenberger; Ralf Natterer
Original assignee: Haacon Hebetechnik Gmbh
Priority date: 2006-07-31
Filing date: 2007-07-12
Publication date: 2008-02-07
Also published as: DE102006035920B3

Abstract

The invention relates to a pivoting foot (32) for supporting a support device or a lifting device, in particular a semitrailer or the like, having a pivoting bearing device for connection to a foot receptacle (31) which is arranged on a supporting tube (12), and a baseplate (151, 194) to be supported on a support face, and a sliding device for moving the pivoting foot on the support face, wherein a roller device (152) is held between the baseplate and a cover plate (150, 195) in such a way that the baseplate can be moved with respect to the cover plate by means of the roller device.

Description

'Swivel foot for supporting a support or lifting device'

The present invention relates to a swivel foot for supporting a supporting or lifting device, in particular a seat post or the like, with a pivot bearing device for connection to a support tube arranged on a foot receptacle and a bottom plate for support on a support surface and a sliding device for moving the swivel base on the support surface ,

Swivel feet of the type mentioned are used to support a support or lifting device, which are used in the application as a seat post, for example, as height-adjustable support devices for so-called "semitrailers", if they are parked independently of a towing vehicle since such lifting devices regularly connected to the vehicle chassis In particular, it proves to be advantageous for the accommodation of such lifting devices on the vehicle chassis when the lifting devices have the greatest possible height / height ratio, in order to maximize their possible height Hubhö- he to have the smallest possible space to accommodate the lifting device on the vehicle.

Since the swivel base is arranged solely on the basis of the regularly necessary size of the effective support surface outside of the lifting height determining support tube, the height of the swivel base always contributes to a Redzierung the Hubhöhen- / height ratio.

The present invention is therefore based on the object to propose a swivel foot for supporting a support or lifting device which is designed so that it contributes as little as possible to the overall height of the support or lifting device and yet a functionally reliable support of the support or lifting device the underground allows.

This object is achieved by a swivel base with the features of claim 1.

In the swivel base according to the invention, a roller device is received between the base plate and a cover plate, such that the base plate is displaceable relative to the cover plate by means of the roller device.

Due to the under direct contact contact between the cover plate and the bottom plate recorded roller device allows the lowest possible height of the swivel base associated with the realization of a desired travel path of the swivel foot on the ground to the lifting device free of unwanted transverse force loads, the buckling of the Guide lifting device to hold.

If according to an advantageous embodiment of the swivel base next to the roller device with parallel action device, a spring device is provided which is coupled on the one hand by means of a driver device with the roller device and other- supported on the cover plate and the bottom plate, it is ensured that after setting a path on the swivel base under load of the lifting device after a discharge of the lifting device a provision of the bottom plate relative to the cover plate in a Mittella- ge the bottom plate takes place, which in a renewed loading process of Lifting device in both traversing the bottom plate allows a substantially consistent travel.

It proves to be particularly advantageous if the entrainment device simultaneously serves for the captive connection between the cover plate and the bottom plate, since it is therefore possible to dispense with a separate device which secures the relative positioning of the bottom plate relative to the cover plate.

If the roller device has at least two roller packets arranged at a distance and parallel to one another with a plurality of rollers arranged in a roller cage, not only a tilt-proof support of the pivot foot is realized, but also a reduction of the load component attributable to each roller, corresponding to the plurality of rollers; smaller rollers can be used to further reduce the height of the swivel base.

In addition, it proves to be particularly advantageous if the driving device is simultaneously designed as a roller axle, since the dual function of the driving device allows a reduction in the number of parts.

If the spring device is formed from at least one helical spring device, a simple realization of the spring device from standard parts customary in mechanical engineering is possible.

A particularly secure definition of a middle position of the base plate relative to the cover plate becomes possible when the helical spring comprises two arranged on a common spring axis coil springs, which are connected to each other via a driver piece for receiving the driving device.

If, according to a further advantageous embodiment of the swivel base, the spring device has a spring bundle arranged between the roller packages, and the driver device is formed by a common roller axis of the roller packages, a swiveling foot is realized which as a whole has a simple design with the smallest possible number of parts.

If, according to another embodiment of the swivel base, each roller package is coupled to a spring strand as entraining device via at least one roller axis, and the spring strands are each arranged outside a gap formed between the roller packages, the intermediate space is available for forming an extended lifting spindle receiving space of the support space. so that a further reduction of the height is possible.

Preferred embodiments of the swivel base will be explained in more detail with reference to the drawings.

Show it:

Figure 1 is a lifting device with swivel base in a front view.

FIG. 2 shows the lifting device shown in FIG. 1 in a sectional view according to section line II-II in FIG. 1; FIG.

FIG. 3 shows a shank tube of the lifting device shown in FIG. 1 in cross section; FIG.

4 shows an alternative cross-sectional configuration of the shank tube cross-section illustrated in FIG. 3; Fig. 5 is a side view of the pivot foot of the lifting device according to view V in Fig. 1;

FIG. 6 shows a side view of the swivel base shown in FIG. 5 according to view VI in FIG. 5 in a partial sectional view; FIG.

Fig. 7 is a partial sectional view of that shown in Fig. 5

Schwenkfußes according to section line VII-VII in Fig. 5;

8 shows a further embodiment of a swivel foot in a view corresponding to FIG. 5;

9 is a side view of that shown in Fig. 8

Schwenkfußes in partial sectional view;

10 is a partial sectional view of the swivel base shown in FIG. 8 according to the section line X-X in FIG.

8th;

FIG. 11 shows a representation of the travel path of the swivel foot illustrated in FIG. 9; FIG.

FIG. 12 is an illustration of the travel path of the swivel foot illustrated in FIG. 10; FIG.

FIG. 13 shows the swivel foot illustrated in FIG. 5 in a side view according to view VI in FIG. 5, supplemented by a transport safety device;

Fig. 14 of the swivel foot shown in Fig. 5 supplemented by the transport lock 1 and 2 results in the construction of a lifting device 10 with a shaft tube 1 1 and a coaxially arranged in the shaft tube 1 1 support tube 12. The shaft tube 1 1 is according to the embodiment shown in Fig. 3 of a U-shaped Shaft tube profile 13 and a profile 13 to a square tube complementary mounting plate 14 composed, which also forms the rear wall of the shaft tube 1 1. The mounting plate 14 is used for connection to a vehicle chassis and has laterally formed terminal strips 15, 16, a plurality of mounting holes 17, which allow a connection to differently shaped vehicle chassis or in different mounting heights on a vehicle chassis.

2, the support tube 12 received in the shaft tube 11 extends essentially over the entire length of the shaft tube 1 Completing a pressure plate 18, which serves to receive an upper Hubspindelendes 19 of a lifting spindle 20 which extends on a longitudinal axis 21 of the lifting device 10 and the support tube 12. At the upper Hubspindelende 19 is also a rotatably mounted on a shaft collar 22 Hubspindelzahnrad 23, which serves to drive the lifting spindle 20 and is supported together with the lifting spindle 20 via a thrust bearing 24 on the pressure plate 18.

On the lifting spindle 20, a spindle nut 25 is arranged, which is rotationally rigidly connected to the support tube 12 at its periphery, so that a rotation of the lifting spindle 20 as a result of a drive of the Hubspindelzahnrads 23 via the threaded engagement of the lifting spindle 20 with the spindle nut 25 depending on the direction of rotation Extending or retracting the support tube 12 from the shaft tube 1 1 addition or effected in this.

To drive the Hubspindelzahnrads 23 is arranged below the pressure plate 18 Hubgetriebe 26, which has a Antriebswellenanord- tion 27 and an output shaft assembly 28 which acts on the Hubspindelzahnrad 23 comprises.

At the lower end of the support tube 12 is a foot device 29, which has a foot receptacle 31 connected to a lower front end 30 of the support tube 12 and a pivot foot 32 connected to the foot receptacle 31.

Fig. 5 shows the according to the illustration in Fig. 1 at the lower end of the support tube 12 by means of Fußaufnahme 31 arranged Schwenkfuß 32, which, moreover, from an overall view of FIGS. 5, 6 and 7, between a cover plate 150th and a bottom plate 151, a roller device 152, consisting of two spaced apart and parallel roller packages 153 and 154, has. The roller packages 153 and 154 each have three rollers 156, 157 and 158 arranged in a roller cage 155. The respective central rollers 157 of the roller packages 153, 154 are connected to one another via a driving rod 159. Both the cover plate 150 and the bottom plate 151 are, as shown in FIG. 5, formed approximately U-shaped with relatively flat guide webs 160 and 161 formed legs and a plate base 162 and 163, respectively for stabilization with Beading 164 is provided. The cover plate 150 and the bottom plate 151 are mutually interlocked, such that the guide webs 160 and 161 are adjacent and overlap each other in the region of guide slots 165, 166 formed in the guide webs 160, 161. Through the guide slots 165, 166 are on both sides of free threaded ends 167, 168 of the Mitnehmerstange 159 passed through and to secure such a created composite cover plate 150 with the bottom plate 151 with intermediate arrangement of the roller packages 153, 154 provided with axle nuts 169, 170. Thus, interconnected, the cover plate 150 together with the support tube 12 in carrying out a corresponding rolling movement of the Rolls 156 to 158 of the roller packages 153 and 154 cover a relative travel in the direction of the guide slots 165, 166.

As FIG. 7 shows, a spring device 174 designed as a spring assembly of two coil springs 172, 173 arranged on a common spring axis 171 is provided between the roller packages 153 and 154 and in an identical longitudinal axis direction. The coil springs 172 and 173 are each provided at their spring ends with force introduction pieces 175, 176, 177 and 178. The middle force introduction pieces 176 and 177 together form a driver piece, through which the driver rod 159 is guided. The outer force introduction pieces 175 and 178 are in the center position of the Mitnehmerstange 159 shown in Fig. 7 in the guide slots 165, 166 spring preloaded on both stop tabs 179, 180 of the cover plate 150 and on stop tabs 181, 182 of the bottom plate 151 at. If the cover plate 150 is then displaced relative to the base plate 151, the coil springs 172, 173 of the spring device 174 are compressed independently of the direction of travel, so that the coil springs 172, 173 define the center position shown in FIG. 7 with the base plate 151 unloaded.

FIGS. 8 to 10 show a swiveling foot 190 which, unlike the swiveling foot 32 shown in FIGS. 5 to 7, has a cover plate 195 which is provided in a central area of a plate base 191 with a plate recess 192 having a gap for receiving a support tube attachment formed, for example, by a foot receptacle 193, which defines a spindle passage area 143, so that a lifting spindle arranged in the support tube can be guided almost up against a bottom plate 194 of the pivot foot.

The plate depression 192 is made possible by the fact that two spring devices 196, 197 each having two helical springs 172, 173 are arranged adjacent to the roller packages 153, 154 and away from the longitudinal axis 21 of the support tube 12. To accommodate the spring device 196, 197, the cover plate 195 is provided in each case to the outer edges and adjacent the roller packages 153, 154 with cross-sectionally C-shaped spring receiving chambers 198, 199. In the spring receiving chambers 198, 199, the spring devices 196, 197 are secured by stop tabs 200, 201. The bottom plate 194 has at its side edges two to the cover plate 195 extending guide ribs 202, 203, which form together with the plate recess 192 of the cover plate roller receiving spaces 204, 205 for receiving the roller packages 153, 154.

As can be seen in particular from a synopsis of FIGS. 9 and 10, two driving rods 206, 207 are provided in the swiveling foot 190, each being fastened to the cover plate 195 with a fixing end 208 in the area of the roller receiving space 204, 205 and extending through the each middle roller 157 of the roller packages 153, 154 extend into the respective associated spring receiving space 198, 199 and are arranged with their free entrainment ends 209 between a driver piece forming force introduction pieces 176, 177.

As can be seen in particular from Figs. 11 and 12, causes a displacement of the cover plate 195 relative to the bottom plate 194, a movement of the driving rods 206 and 207 within a formed in the guide webs 202, 203 of the bottom plate 194 guide slot 210. Due to the rolling of the rollers Roller packages 153, 154 on the cover plate 195 and the bottom plate 194 results in a displacement of length 1, a travel of the rollers 156 to 158 of the roller packages 153, 154 of 1/2.

As shown in FIGS. 13 and 14, it is, for example, by arranging a in the direction of the longitudinal axis 21 of the support tube 12 extending locking pin 21 1 and corresponding training of aligned with a pin axis 212 arranged locking holes 213 and 214 in the cover plate 150 and the bottom plate 151 by the simplest means possible, for a locking of the central position of the Mit- Receiving rod 159 to ensure that when fully retracted into the shaft tube 1 1 support tube 12 is provided by engaging the locking pin 21 1 in the locking hole 213 and 214 for securing the central position even under dynamic load while driving a mounted on a vehicle chassis lifting device 10.

If necessary, it is also possible, as shown in Fig. 14, additional, for example, spring-biased locking pins 215, 216 provided on the stop tabs 179 to 182 of the cover plate 150 and the bottom plate 151, which also irrespective of engagement of the locking pins 21 1 in the locking holes 213, 214 provide for a locking of the central position.

Claims

claims

1. pivot foot (32) for supporting a support or lifting device, in particular a seat post or the like, with a pivot bearing device for connection to a support tube (12) arranged foot receptacle (31) and a bottom plate (151, 194) for support on a support surface and a sliding device for displacing the pivot foot on the support surface, characterized ek ennz ei chn et, that between the bottom plate and a cover plate (150, 195) a

Roller device (152) is received, such that the bottom plate by means of the roller device relative to the cover plate is displaceable.

2. Schwenkfuß according to claim 1, characterized ek ez ennz ei chnet that with parallel direction of action next to the roller means (152) a spring means (174, 196, 197) is provided, on the one hand means of a driver (159, 206, 207) with the Roller device is coupled and on the other hand on the cover plate (150, 195) and the bottom plate (151, 194) is supported.

3. swivel foot according to claim 2, characterized g ek ennzei chnet that the entrainment means (159, 206, 207) at the same time for captive connection between the cover plate (150, 195) and the bottom plate (151, 194) is used.

4. Schwenkfuß according to any one of the preceding claims, characterized ekze ennzei chnet that the roller means (152) at least two spaced and parallel to each other roller packages (153, 154) having a plurality of in a roller cage (155) arranged rollers (156,

157, 158).

5. swivel foot according to one of the preceding claims, characterized gek ennz egg chn, that the entrainment means (159, 206, 207) is formed simultaneously as a roller axle.

6. Schwenkfuß according to any one of the preceding claims, characterized ek ezz ei chnet, that the spring means (174, 196, 197) is formed from at least one coil spring means.

7. swivel base according to claim 6, characterized gekennzei chnet that the coil spring means comprises two on a common spring axis (171) arranged coil springs (172, 173) via a driver piece (176, 177) for receiving the Mitnehmerein- direction (159, 206 , 207) are interconnected.

8. swivel foot according to one of the preceding claims, characterized egg egg chnet, that the spring means (174) between the roller packages (153, 154) arranged spring strand, and the driver device (159) is formed by a common roller axis of the roller packages.

9. swivel base according to one of claims 1 to 7, characterized in that each roller package (153, 154) via at least one roller axle as entraining means (206, 207) with a spring strand (196, 197) is coupled, and the spring strands each outside of one are arranged between the roller packs formed intermediate space.