Support system

Abstract

The invention relates to a support system (1) comprising a pair of support feet (10,50) of which a first support foot (10) and a second support foot (50), each comprising a respective outer tubular body (11,51) and at least one respective inner tubular body (12,52) associated with each other in mutual sliding between a mutual maximum extension position of the support foot and a mutual minimum extension position, and an adjustment mechanism (15,55) of the mutual position between the outer tubular body (11,51) and the inner tubular body (12,52), provided with: a nut (16,56), fixed to said inner tubular body (12,52); a screw (17,57), associated in rotation with the outer tubular body (11,51) and adapted to interlock with the nut (16,56) such as to move the outer tubular body (11,51) and the outer tubular body (12,52) in mutual sliding; and a driving shaft (18,58), rotatably associated with the outer tubular body (11,51) and mechanically associated with the screw (17,57) such that a rotary motion of the screw corresponds to a rotary motion of the shaft, wherein the first support foot (10) comprises a transmission apparatus (20) of the rotary motion of the driving shaft (18) to the screw (17), which is selectively operable between a first configuration, in which it imposes a first gear ratio between a rotation speed of the driving shaft (18) and a rotation speed of the screw (17), and a second configuration, in which it imposes a second gear ratio, different from the first, between a rotation speed of the driving shaft (18) and a rotation speed of the screw (17), the support system (1) further comprising a linkage unit (30) between the support feet (10,50) of the system (1), adapted to transmit the rotary motion of the screw (17) of the first support foot (10) to the screw (57) of the second support foot (50).

Description

[0001] SUPPORT SYSTEM

[0002] TECHNICAL FIELD

[0003] The present invention falls within the field of adjustable ground support and support systems, e.g., for structures, machines, etc.

[0004] More precisely, the present invention relates to a support system provided with a pair of ground support feet.

[0005] PRIOR ART

[0006] Ground support feet are known, which can extend longitudinally so as to lift objects of all kinds vertically with respect to the ground, such as structures or machinery with which said support feet are associated.

[0007] In detail, the support feet of the known art are provided with two tubular bodies, slidingly associated with each other so that the mutual sliding thereof allows a longitudinal extension of the support foot to be varied, so that said structures or machinery can be brought closer or farther away from the ground as required.

[0008] Also commonly known are ground support systems comprising two or more of said support feet, connected to each other so that the mutual sliding between the tubular bodies of the support feet is identical and simultaneous.

[0009] A need found in the field is to improve and make said support systems more effective, particularly in terms of an adjustment of the speed at which the support feet are pulled out and in terms of a simultaneous pulling out thereof.

[0010] An aim of the present invention is to provide a support foot capable of solving these and other needs of the known art within the framework of a rational, low-cost solution.

[0011] Such an aim is achieved by the features of the invention reported in the independent claim. The dependent claims outline preferred and / or particularly advantageous aspects of the invention.

[0012] DISCLOSURE OF THE INVENTION

[0013] The invention therefore provides a support system comprising a pair of support feet including a first support foot and a second support foot, each of which comprises a respective outer tubular body and at least one respective inner tubular body, associated with each other in mutual sliding between a mutual maximum extension position of the support foot and a mutual minimum extension position, and a mechanism for adjusting the mutual position between the first and the second tubular body, provided with: - a nut, fixed to said inner tubular body,

[0014] - a screw, associated in rotation with the outer tubular body and adapted to interlock with the nut such as to move the inner tubular body and the outer tubular body in mutual sliding, and

[0015] - a driving shaft, rotatably associated with the outer tubular body and mechanically associated with the screw such that a rotary motion of the screw corresponds to a rotary motion of the shaft, wherein the first support foot comprises an apparatus for transmitting the rotary motion of the driving shaft to the screw, which is selectively operable between a first configuration, in which it imposes a first gear ratio between a rotation speed of the driving shaft and a rotation speed of the screw, and a second configuration, in which it imposes a second gear ratio, different from the first, between the rotation speed of the driving shaft and the rotation speed of the screw, the support system further comprising a linkage unit between the support feet of the system, adapted to transmit the rotary motion of the screw of the first support foot to the screw of the second support foot.

[0016] Therefore, the invention provides a support system provided with considerable efficiency and functionality, particularly with regard to the possibility of varying a mutual speed of movement of the tubular bodies of the feet, viz., in essence a speed at which the feet are pulled out, while simultaneously maintaining a certain simultaneity in the pulling out movement of the two feet.

[0017] Thanks to the invention, in fact, when a first support foot is configured so as to vary a speed of pulling the feet out, viz., a mutual movement speed of the tubular bodies thereof, a second foot of the support system is also subject to a corresponding variation in the pulling out speed thereof.

[0018] According to an aspect of the invention, the transmission apparatus can comprise:

[0019] - a first gearing, adapted to realise said first gear ratio between the rotation speed of the driving shaft and the rotation speed of the screw,

[0020] - a second gearing, adapted to realise said second gear ratio between the rotation speed of the driving shaft and the rotation speed

[0021] - a selector element, adapted to alternatively connect the driving shaft to the first gear pear or the second gearing. The system is thus provided with a transmission apparatus which is simply to realise which allows a user to easily and readily realise said variation in the speed at which the support feet are pulled out.

[0022] According to a similar aspect of the invention, the first gearing and the second gearing can each comprise:

[0023] - a respective geared pinion, adapted to receive a rotary motion from the driving shaft, and

[0024] - a respective ring gear, adapted to engage with the respective pinion, the ring gears of the first gearing and the second gearing being mutually integral in rotation, and the screw can be integral in rotation with said ring gears.

[0025] The transmission apparatus of the support system thus has a compact design which is particularly functional for the purposes of the invention.

[0026] According to another aspect of the invention, the linkage unit can comprise:

[0027] - a third gearing, comprising a geared pinion, adapted to receive the rotary motion from the driving shaft of the second support foot, and a ring gear, adapted to engage with the geared pinion, the screw of the second support foot being integral with the ring gear of the third gearing, and

[0028] - connection means, adapted to transmit the rotary motion of the geared pinion of the second gearing to the driving shaft of the second support foot.

[0029] Therefore, the linkage unit is also provided with functional features for its intended purposes, viz., capable of effectively transmitting the rotary motion of the pinion of the second gearing, which in turn is connected to the screw of the first tubular body, to the pinion of the third gearing and, consequently, to the screw of the second tubular body.

[0030] According to yet another aspect of the invention, said connection means can comprise a connection shaft, adapted to receive motion from the pinion of the second gearing, the connection shaft being associated with the driving shaft of the second support foot in order to rotate the same.

[0031] Thanks to such a feature, the linkage unit is designed in such a way as to have a simple and cost-effective design, in the perspective of a simple, low-cost solution.

[0032] According to a further aspect of the invention, the geared pinion of the second gearing can be provided with an end exiting from the outer tubular body, and the connection shaft can be fixed to and rotationally integral with said end. The support system is this given a particular simplicity in constraining the connection means, more specifically the connection shaft, to the pinion of the second gearing.

[0033] According to a still further aspect of the invention, the third gear can realise a gear ratio between the rotation speed of the driving shaft and the rotation speed of the screw of the second support foot equal to the gear ratio realised by the second gearing.

[0034] It is thus ensured that the pinion (and ring gear) of the third gearing can transmit a rotary motion to the screw of the second support foot which is identical to the screw of the first support foot, thus ensuring the same speed of pulling out between the first support foot and the second support foot.

[0035] BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Further features and advantages of the invention will be more apparent after reading the following description provided by way of a non-limiting example, with the aid of the figures illustrated in the accompanying drawings.

[0037] Figure 1 is an axonometric view of a support system according to the invention.

[0038] Figure 2 is an upper plan view of the support system of Figure 1 .

[0039] Figure 3 is a sectional view of the support system of Figure 2, according to the plane of section Ill-Ill.

[0040] Figure 4 is an enlargement of a detail of the support system of Figure 3, in which a transmission apparatus of a first support foot is illustrated in a first configuration thereof.

[0041] Figure 5 is an enlargement of a detail of the support system of Figure 3, in which a transmission apparatus of a first support foot is illustrated in a second configuration thereof.

[0042] BEST MODE TO IMPLEMENT THE INVENTION

[0043] With particular reference to the figures listed above, a support system according to the invention has been globally referred to as 1.

[0044] Said support system 1 is generally adapted to be associated with one or more objects, for example a structure, machine and / or other, and is designed to be able to lift said object with respect to the ground.

[0045] In this regard, the support system 1 comprises (at least) one pair of support feet 10,50, of which a first support foot 10 and a second support foot 50, adapted to be associated with said object to be lifted and extendable or retractable longitudinally so as to operate the lifting of the object with respect to the ground. As can be seen in detail in Figures 1 and 2, said support feet 10,50 are mutually side by side at a non-zero distance from each other.

[0046] The support feet 10,50 extend between a first longitudinal (lower) end, adapted to contact the ground, and a second longitudinal (upper) end, through which the foot is associated with said object to be lifted.

[0047] Each support foot 10,50 is provided with a respective outer tubular body 11 ,51 and at least one respective inner tubular body 12,52, associated with each other in mutual sliding between a minimum extension position and a maximum extension position of the support foot.

[0048] Preferably, each inner tubular body 12,52 provides the first (lower) longitudinal end and each outer tubular body 11 ,51 provides the second (upper) longitudinal end of the respective support foot.

[0049] In this sense, each inner tubular body 12,52 is preferably provided with a ground support element.

[0050] Each inner tubular body 12,52 is inserted inside (a tubular cavity defined by) the respective outer tubular body 11 ,51 and slides therein between said minimum extension and maximum extension positions of the support foot.

[0051] It is not excluded that each support foot 10,50 could be a support foot with three pull-outs and in that sense could be provided with (at least) one further tubular body, connecting the inner tubular body and the outer tubular body.

[0052] Preferably, the first support foot 10 and the second support foot 50, viz., the respective outer tubular bodies 11 ,51 and the respective inner tubular bodies 12,52, are provided with corresponding shapes and dimensions, viz., equal between the two feet.

[0053] Each support foot 10,50 is further provided with a mechanism for adjusting 15,55 the mutual position between the (respective) outer tubular body 11 ,51 and the (respective) inner tubular body 12,52.

[0054] In other words, by means of said adjustment of the mutual position of the tubular bodies, the adjustment mechanism 15,55 is capable of varying an extension of the support foot, (in any position comprised) between the minimum extension position and the maximum extension position of the support foot.

[0055] The adjustment mechanism 15,55 comprises a nut 16.56, fixed to the inner tubular body 12,52, viz., constrained with no residual degrees of freedom with respect thereto. The nut 16,56 is provided with a through hole defining an inner tubular surface provided with a thread.

[0056] The adjustment mechanism 15,55 then comprises a screw 17,57, which is rotatably associated with the outer tubular body 11 ,51 , around a rotation axis thereof which, in use, is generally vertical (with respect to the ground)

[0057] The screw 17,57 is adapted to interlock with (the through hole, threaded, of) the nut 16,56 such as to move the inner tubular body and the outer tubular body in mutual sliding.

[0058] The adjustment mechanism 15,55 further comprises a driving shaft 18,58, which is rotatably associated with the outer tubular body 11 ,51 , around a rotation axis thereof, in use generally horizontal (with respect to the ground).

[0059] The driving shaft 18,58 is mechanically associated with the screw 17,57 such that a rotary motion of the screw corresponds to a rotary motion of the shaft, as will be discussed in more detail below.

[0060] As can be seen in detail in the sectional view of Figure 3, the driving shaft 18,58 can be at least partially inserted inside the outer tubular body 11 ,51 , through a through hole made therein.

[0061] In other words, preferably at least one end stretch of the driving shaft 18,58 protrudes externally with respect to the outer tubular body.

[0062] Furthermore, the driving shaft 18 of the first tubular body 10 is preferably axially sliding inside said through hole of the outer tubular body 11 , between a first end position, illustrated in Figure 4, and a second end position, illustrated in Figure 5.

[0063] In the first limit switch position a smaller portion of the driving shaft 18 is inserted in the outer tubular body 11 , in the second limit switch position a larger portion of the shaft 18 is inserted in the outer tubular body 11 .

[0064] The first support foot 10 further comprises drive means adapted to rotate the driving shaft 18.

[0065] For example, such drive means can comprise a manual drive device, e.g., a crank 19, associated in rotation with the driving shaft 18 and adapted to allow a user to manually impart a rotation thereto.

[0066] It cannot be excluded that, in different embodiments of the invention, the first support foot 10 can comprise drive means of a different type from that described and illustrated in the figures. The first support foot 10 further comprises a transmission apparatus 20, configured to transmit the rotary motion of the driving shaft 18 to the screw 17.

[0067] Said transmission apparatus 20 is selectively operable in a first configuration, in which it imposes a first gear ratio between a rotation speed of the driving shaft 18 and a rotation speed of the screw 17 of the first support foot 10.

[0068] The apparatus is further selectively operable in a second configuration, in which it imposes a second gear ratio, different from the first, e.g., preferably lower with respect to the first, between the rotation speed of the driving shaft 18 and the rotation speed of the screw 17.

[0069] It is thus possible to control, viz., regulate, a mutual sliding speed between the two tubular bodies 11 , 12 of the support foot 10, viz., substantially a pulling-out speed of the first support foot 10.

[0070] In this regard, the transmission apparatus 20 comprises a first gearing 21 , adapted to realise said first gear ratio, and a second gearing 22, adapted to realise said second gear ratio.

[0071] Each of said gearings 21 ,22 comprises a respective geared pinion 210,220, each of which is adapted to be selectively connected to the driving shaft 18.

[0072] Said geared pinions 210,220 are rotatably associated with the outer tubular body 11 of the first support foot 10, at the driving shaft 18.

[0073] In other words, as illustrated in the sectional view of Figures 3 to 5, each pinion 210,220 is provided with a through hole, within which the through shaft 18 is slidingly inserted.

[0074] The driving shaft 18 is also rotatably inserted inside said holes, idly with respect to the pinions.

[0075] In this sense, the geared pinions 210,220 of the first gearing 21 and the second gearing 22 are adapted to be mechanically connected to the driving shaft 18, such that they can receive the rotary motion therefrom.

[0076] The geared pinion 220 of the second gearing 22, moreover, is preferably provided with one end exiting from the outer tubular body 11 .

[0077] The first gearing 21 and the second gearing 22 further comprise a respective ring gear 211 ,221 , which is adapted to engage with the respective pinion.

[0078] Said ring gears 211 ,221 are fixed to the screw 17, viz., the screw 17 of the adjustment apparatus 15 of the first support foot 10 is rotationally integral with said rings. The ring gears 211 ,221 of the first gearing 21 and the second gearing 22 are also mutually integral in rotation.

[0079] In other words, such ring gears 211 ,221 are mutually fixed by means of special fixing means and integral with each other in rotation around the same rotation axis, coaxial to the rotation axis of the screw 17.

[0080] In this sense, when the geared pinion 210,220 of one between the first gearing 21 and the second gearing 22 is driven in rotation and the respective ring gear 211 ,221 engages therewith, since the two ring gears are mutually integral, the geared pinion 220,210 of the other of the second gearing 22 and the first gearing 21 is also driven in rotation.

[0081] In other words, if the geared pinion 210 of the first gearing 21 is driven in rotation (as will be discussed in more detail below) and engages with the respective ring gear 21 1 , driving it in rotation, the geared pinion 221 of the second gearing 22 is also driven in rotation and, consequently, it transfers its rotary motion to the geared pinion 220 of the second gearing 22, and vice versa.

[0082] The transmission apparatus 20 further comprises a selector element 23, which alternatively connects the driving shaft 18 to the first gearing 21 or the second gearing 22.

[0083] The selector element 23 is fixed to the driving shaft 18 such as to be rotationally integral therewith.

[0084] The selector element 23 is further slidingly integral with the driving shaft 18 between its first limit switch position and its second limit switch position.

[0085] In detail, the selector element 23 is adapted to connect the driving shaft 18 to the first gearing 21 when it is in its first limit switch position and to the second gearing 22 when it is in its second limit switch position.

[0086] In other words, when the driving shaft 18 is in said first and second limit switch position, the selector element 23 is configured to mechanically connect it alternatively to the geared pinion 210 of the first gearing 21 or to the geared pinion 220 of the second gearing 22. Thereby, only one between the geared pinion 210 of the first gearing 21 or the geared pinion 220 of the second gearing 22 is rotationally integral with the driving shaft 18.

[0087] Basically, when the driving shaft 18 is in its first limit switch position, it is mechanically associated with the screw 17 by means of the (geared pinion 210 and the respective ring gear 220 of the) first gearing 21 . In this case, the transmission apparatus 20 transmits the rotary motion of the driving shaft 18 to the screw 17 according to the first gear ratio.

[0088] When the driving shaft 18 is instead in its second limit switch position, it is mechanically associated with the screw 17 by means of the (geared pinion 220 and the respective ring gear 221 of the) second gearing 22. In the present case, the transmission apparatus 20 transmits the rotary motion of the driving shaft 18 to the screw 17 according to the second gear ratio.

[0089] Furthermore, according to what has been described above, since the ring gears 211 ,221 are mutually integral in rotation, when the driving shaft 18 of the first support foot 10 is in the first limit switch position and drives the geared pinion 210 of the first gearing 21 in rotation, the geared pinion 220 of the second gearing 22 is also driven in rotation (idly with respect to the driving shaft 18 of the first foot), and vice versa.

[0090] The support system 1 according to the invention further comprises a linkage unit 30 between the support feet 10,50 of the system 1 .

[0091] Said linkage unit 30 is adapted to transmit the rotary motion of the screw 17 of the first support foot 10 to the screw 57 of the second support foot 50.

[0092] In other words, the linkage unit 30 is adapted to mechanically connect the screw 17 of the first support foot 10 to the driving shaft 58 of the second support foot 50. The linkage unit 30 is further adapted to mechanically connect the driving shaft 58 of the second support foot 50 to the screw of the second support foot 50.

[0093] In this regard, the linkage unit 30 comprises a third gearing 31 , adapted to transmit the rotary motion of the driving shaft 18 of the second support foot 50 to the screw 57 of the second support foot 50.

[0094] The third gearing 31 is adapted to realise a third gear ratio between the rotation speed of the driving shaft 58 and the rotation speed of the screw 57 of the second support foot 50. Said third gear ratio is preferably equal to the (second) gear ratio realised by the second gearing 22.

[0095] The third gearing 31 comprises a geared pinion 310, adapted to receive the rotary motion from the driving shaft 58 of the second support foot 50, and a ring gear 311 , adapted to engage with the geared pinion 310 and to which the screw 57 of the second support foot 50 is rotationally integral.

[0096] The linkage unit 30 further comprises connection means 32 for transmitting the rotary motion of the screw 17 of the first support foot 10 to the driving shaft 58 of the second support foot 50.

[0097] Preferably, said connection means 32 can be connected to the screw 17 of the first support foot 10 through the geared pinion 220 of the second gearing 22.

[0098] For example, said connection means 32 can comprise a connection shaft 320, adapted to receive the (rotary) motion from the geared pinion 220 of the second gearing 22, viz., constrained by means of special fixing means to said geared pinion 220, for example at a longitudinal end thereof, and rotationally integral therewith.

[0099] For example, the connection shaft 320 can be fixed to said geared pinion 220 through the exiting end thereof with respect to the outer tubular body 11 .

[0100] The connection shaft 320 is further associated, viz., constrained by means of special fixing means, to the driving shaft 58 of the second support foot 50, for example at a longitudinal end thereof opposite the geared pinion 220 of the second gearing 22 and, for example, by means of a longitudinal end of the shaft 58 which is distal from the geared pinion 310 of the third gearing 31 .

[0101] The driving shaft 58 of the second support foot 50 is therefore integral in rotation with the connection shaft 320, viz., essentially with the geared pinion 220 of the second gearing 22 through the connection shaft 320.

[0102] The operation of the support system 1 according to the invention is the following.

[0103] A user can select at what speed he / she wishes to pull out the (tubular bodies of the) two support feet 10,50 through the sliding of the driving shaft 18 of the first support foot 10, between the first and the second limit switch position, for example by manually operating a crank 19 associated therewith.

[0104] The driving shaft 18 is thus placed in the first limit switch position or the second limit switch position, in which the selector element 23 is adapted to connect the shaft 18 with the first gearing 21 or with the second gearing.

[0105] In both positions of the shaft 18, the (geared pinion 220 of the) second gearing 22 transmits the rotary motion of the screw 17 of the first support foot 10 to the connection shaft 320.

[0106] The driving shaft 18 of the second support foot 50, integral with the connection shaft 320, transmits the rotary motion of the geared pinion 220 of the second gearing 22 to the screw 57 of the adjustment mechanism 55 of the second support foot 50 through the third gearing 31 , driving it in rotation with the same angular speed as the screw 17 of the adjustment mechanism 15 of the first support foot 10.

[0107] The invention thus conceived is susceptible to many modifications and variants, all falling within the same inventive concept.

[0108] Moreover, all the details can be replaced by other technically equivalent elements. In practice, the materials used, as well as the contingent shapes and sizes, can be whatever according to the requirements without for this reason departing from the scope of protection of the following claims.

Claims

CLAIMS1. A support system (1 ) comprising a pair of support feet (10,50) of which a first support foot (10) and a second support foot (50), each comprising a respective outer tubular body (11 ,51 ) and at least one respective inner tubular body (12,52) associated with each other in mutual sliding between a mutual maximum extension position of the support foot and a mutual minimum extension position, and an adjustment mechanism (15,55) of the mutual position between the outer tubular body (11 ,51 ) and the inner tubular body (12,52), provided with:- a nut (16,56), fixed to said inner tubular body (12,52),- a screw (17,57), associated in rotation to the outer tubular body (11 ,51 ) and adapted to interlock with the nut (16,56) such as to move the outer tubular body (11 ,51 ) and the outer tubular body (12,52) in mutual sliding, and- a driving shaft (18,58), rotatably associated with the outer tubular body (11 ,51 ) and mechanically associated with the screw (17,57) such that a rotary motion of the screw corresponds to a rotary motion of the shaft, wherein the first support foot (10) comprises a transmission apparatus (20) of the rotary motion of the driving shaft (18) to the screw (17), which is selectively operable between a first configuration, in which it imposes a first gear ratio between a rotation speed of the driving shaft (18) and a rotation speed of the screw (17), and a second configuration, in which it imposes a second gear ratio, different from the first, between a rotation speed of the driving shaft (18) and a rotation speed of the screw (17), the support system (1 ) further comprising a linkage unit (30) between the support feet (10,50) of the system (1 ), adapted to transmit the rotary motion of the screw (17) of the first support foot (10) to the screw (57) of the second support foot (50).

2. The support system (1 ) according to claim 1 , wherein the transmission apparatus (20) comprises:- a first gearing (21 ), adapted to realise said first gear ratio between the rotation speed of the driving shaft (18) and the rotation speed of the screw (17),- a second gearing (22), adapted to realise said second gear ratio between the rotation speed of the driving shaft (18) and the rotation speed of the screw (17),- a selector element (23), adapted to alternatively connect the driving shaft (18) to the first gearing (21 ) or the second gearing (22).

3. The support system (1 ) according to the preceding claim, wherein the driving shaft (18) of the first support foot (10) is slidingly associated with the outer tubular body (11 ) thereof between a first limit switch position and a second limit switch position, the selector element (23) being slidingly integral with said driving shaft (18) and adapted to connect the driving shaft (18) to the first gearing (21 ) when this is in its first limit switch position and to the second gearing (22) when this is in its second limit switch position.

4. The support system (1 ) according to claim 2, wherein the first gearing (21 ) and the second gearing (22) each comprise:- a respective geared pinion (210,220), adapted to receive a rotary motion from the driving shaft (18),- a respective ring gear (211 ,221 ), adapted to engage with the respective pinion, the ring gears of the first gearing (21 ) and the second gearing (22) being mutually integral in rotation, wherein the screw (17) is integral in rotation with said ring gears (211 ,221 ).

5. The support system (1 ) according to any one of the preceding claims, wherein the linkage unit (30) comprises:- a third gearing (31 ), comprising a geared pinion (310), adapted to receive the rotary motion from the driving shaft (58) of the second support foot (50), and a ring gear (311 ), adapted to engage with the geared pinion (310), the screw (57) of the second support foot (50) being integral with the ring gear (311 ) of the third gearing (31 ), and- connection means (32), adapted to transmit the rotary motion of the screw (17) of the first support foot (10) to the driving shaft (58) of the second support foot (50).

6. The support system (1 ) according to claim 5, wherein said connection means comprise a connection shaft (320), adapted to receive motion from the pinion of the second gearing (22), the connection shaft (320) being associated with the driving shaft (58) of the second support foot (50) to rotate the same.

7. The support system (1 ) according to the preceding claim, wherein the geared pinion (220) of the second gearing (22) is provided with an end exiting from the outer tubular body (11 ) of the first support foot (10), the connection shaft (320) being fixed and integral in rotation with said end.

8. The support system (1 ) according to claim 5, wherein the third gearing (31 ) realisesa third gear ratio between the rotation speed of the driving shaft (58) and the rotation speed of the screw (57) of the second support foot (50) equal to the gear ratio realised by the second gearing (22).

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