CRAWLER TYPE CEILING VEHICLE CONFIGURED FOR TRAVELING ALONG A STRUCTURE, METHOD OF PROVIDING A CRAWLER-LIKE TRAVELING MOTION ALONG THE STRUCTURE, AND USE OF AT LEAST ONE CRAWLER TYPE DRIVE UNIT FOR PROVIDING DE-/COUPLING KINEMATICS FOR THE TRAVELING MOTION

Abstract

The present invention provides for a crawler type ceiling vehicle (10) configured for traveling in a suspended manner especially headlong at a ceiling structure (1), wherein the vehicle exhibits a plurality of suspension elements (13, 13b) configured for suspending the vehicle and configured for coupling the vehicle to the structure (1), and at least one drive unit (11, 11a, 11b, 11c) configured for circumferential driving motion and accommodating a first circumferential track and a second circumferential track having a different circumferential shape/contour than the first circumferential track. The present invention provides for a method of driving a crawler type vehicle for traveling in a suspended manner especially headlong at a structure (1).

Claims

1. Crawler type ceiling vehicle (10) configured for traveling in a suspended manner especially headlong at a ceiling structure (1), wherein the ceiling vehicle (10) exhibits: a plurality of suspension elements (13, 13b) configured for suspending the ceiling vehicle (10) and configured for coupling the ceiling vehicle (10) to the ceiling structure (1), at least one drive unit (11, 11a, 11b, 11c) configured for circumferential motion and accommodating a first circumferential track (12a) and a second circumferential track (12b) having a different circumferential shape/contour than the first circumferential track, wherein the suspension elements (13, 13b) are attached to the first circumferential track (12a) at predefined first longitudinal positions corresponding to a predefined raster, wherein the ceiling vehicle (10) is configured for moving along the ceiling structure (1) by decoupling a subset of the plurality of suspension elements (13, 13b) from resp. coupling them into the ceiling structure (1) when the suspension elements (13, 13b) are guided along the two circumferential tracks (12, 12a, 12b) by the circumferential motion.

2. Crawler type ceiling vehicle (10) according to claim 1, wherein the ceiling vehicle (10) is configured for moving along the ceiling structure (1) by decoupling a subset of the plurality of suspension elements (13, 13b) from resp. coupling them into the ceiling structure (1) when the suspension elements (13, 13b) are guided along a curved section of at least one of the circumferential tracks (12, 12a, 12b) by the circumferential driving motion.

3. Crawler type ceiling vehicle (10) according to any of the preceding claims, wherein the first and second circumferential tracks (12, 12a, 12b) provide for de-/coupling kinematics based on different circumferential shapes/contours at least in curved sections of the track(s), wherein the suspension elements (13, 13b) are guided in/by the second circumferential track (12b) at respective second longitudinal positions being longitudinally offset with respect to the respective first longitudinal positions, wherein the de-/coupling kinematics provide for both a first motion and a second motion pivoting each suspension element when it is guided along a/the curved section of the circumferential tracks (12, 12a, 12b) by the circumferential driving motion; and/or wherein the de-/coupling kinematics provide for an S-shaped path of motion of a bearing point at a free end of the respective suspension element at least in a section along the path of motion; and/or wherein the de-/coupling kinematics comprise both vertical motion kinematics and non-circular pivot motion kinematics for/of a/the bearing point at a free end of the respective suspension element; and/or wherein the first and second circumferential tracks (12, 12a, 12b) are shaped in such a manner that the suspension elements (13, 13b) are de-/coupled from/into the ceiling structure (1) only when passing a curved section of at least one of the tracks.

4. Crawler type ceiling vehicle (10) according to any of the preceding claims, wherein the momentary relative first longitudinal position of the respective suspension element at the first track defines a/the instantaneous centre of rotation of that suspension element, and the corresponding relative second longitudinal position at the second track defines the amount of momentary rotation of that suspension element; and/or wherein the tracks are shaped in such a manner that both the momentary vertical coordinate as well as the momentary coordinate of the second spatial direction of the respective suspension element is defined and adjusted by the contour of the tracks; and/or wherein the tracks have a shape/contour deviating from the standard racecourse shape of a crawler track at least in a curved section of the tracks, wherein the first track's shape preferably deviates at least in vertical direction, wherein the second track's shape preferably deviates both in vertical direction and in said second direction; and/or wherein the radius of curvature of the first track is constant, at least approximately; and/or wherein in at least one longitudinal position along the track(s), the radius of curvature of the second track is bigger than the radius of curvature of the first track, and in at least one further longitudinal position along the track(s), the radius of curvature of the second track is smaller than the radius of curvature of the first track, wherein radius of curvature of the tracks preferably differs/changes in steady/continuous manner as a function of the momentary longitudinal position along the track(s); and/or wherein the contour of the first track provides for a/the first motion of a/the contacting/bearing point of the respective suspension element, and the contour and changing distance of the second track with respect to the first track provides for a/the pivoting motion of the contacting/bearing point of the respective suspension element when it is guided along a/the curved section of the circumferential tracks (12, 12a, 12b).

5. Crawler type ceiling vehicle (10) according to any of the preceding claims, wherein the shape/contour of the tracks provides for both lifting and lowering of the suspension elements (13, 13b) as a function of the longitudinal position along the tracks, especially first lifting and then lowering in context with decoupling, and vice versa in context with coupling; and/or wherein the relative radial distance of the tracks is constant along a linear section of the tracks, and the relative radial distance of the tracks differs/changes along a curved section of the tracks as a function of the momentary longitudinal position along the track(s), especially in steady/continuous manner.

6. Crawler type ceiling vehicle (10) according to any of the preceding claims, wherein the ceiling vehicle (10) exhibits a further drive unit (11c) accommodating a further circumferential track and configured for synchronous circumferential driving motion; and/or wherein the ceiling vehicle (10) exhibits a further drive unit (11c) accommodating a further circumferential track, wherein a plurality of further suspension elements (13b) configured for suspending the ceiling vehicle (10) and configured for coupling the ceiling vehicle (10) to the ceiling structure (1) are attached to the further circumferential track in predefined further longitudinal positions corresponding to a/the raster defined by the ceiling structure (1); and/or wherein the suspension elements (13) and the further suspension elements (13b) are securing/blocking the ceiling vehicle (10) at the ceiling structure (1) with respect to the driving direction and opposite thereto.

7. Crawler type ceiling vehicle (10) according to any of the preceding claims, wherein the ceiling vehicle (10) exhibits at least one hoist unit (50), or the ceiling vehicle (10) exhibits at least two or three hoists.

8. Crawler type ceiling vehicle arrangement (100) comprising at least one ceiling vehicle (10) according to any of the preceding claims and a/the ceiling structure (1) exhibiting a plurality of profiles defining a/the raster of the ceiling structure (1), wherein the suspension elements (13, 13b) are configured for being guided along the profiles in said first spatial direction, the ceiling vehicle's traveling motion having at least two degrees of freedom; and/or wherein the ceiling structure (1) exhibits a plurality of profiles defining a/the raster of the ceiling structure (1), wherein the ceiling vehicle (10) exhibits a plurality of further suspension elements (13b) suspending the ceiling vehicle (10) together with the suspension elements (13), wherein the suspension elements (13) and the further suspension elements (13b) secure/block the ceiling vehicle (10) at the ceiling structure (1) with respect to the driving direction.

9. Crawler type ceiling vehicle arrangement (100) according to the preceding claim, wherein the profiles respectively exhibit at least one power rail, wherein the ceiling vehicle (10) is configured for driving the at least one drive unit (11, 11a, 11b, 11c) by means of energy supplied via the power rails, especially via current collectors provided within the suspension elements (13, 13b).

10. Crawler type ceiling vehicle arrangement (100) according to claim 8 or 9, wherein the ceiling structure (1) is modular and extendable especially based on tiles which are equipped with profiles of the ceiling structure (1).

11. Crawler type ceiling vehicle arrangement (100) according to any of claims 8 to 10, wherein the crawler type ceiling vehicle arrangement extends on at least two different levels of altitude and exhibits at least one elevator interconnecting said levels of altitude, wherein the elevator exhibits an elevator ceiling structure (1) geometrically corresponding to/with the ceiling structure (1) arranged at the at least two different levels of altitude.

12. Method of hanging/suspending a crawler type ceiling vehicle (10) at/from a ceiling structure (1) for traveling in a suspended manner headlong the ceiling structure (1), especially a crawler type ceiling vehicle (10) according to one of claims 1 to 7, wherein the ceiling vehicle (10) is suspended by means of a plurality of suspension elements (13, 13b) coupling the ceiling vehicle (10) to the ceiling structure (1), wherein a circumferential guiding/driving motion is provided by at least one drive unit (11, 11a, 11b, 11c) accommodating first and second circumferential tracks (12a, 12b) having a different circumferential shape/contour, wherein the suspension elements (13, 13b) are attached to the first circumferential track at predefined first longitudinal positions corresponding to a raster defined by the ceiling structure (1), wherein the ceiling vehicle (10) is suspended such that it can move along the ceiling structure (1) by decoupling a subset of the plurality of suspension elements (13, 13b) from resp. coupling them into the ceiling structure (1) when the suspension elements (13, 13b) are guided along the circumferential tracks by the circumferential motion.

13. Method according to the preceding method claim, wherein the circumferential motion is transmitted/transferred by the suspension elements (13, 13b) momentarily engaging the ceiling structure (1); and/or wherein the circumferential motion is provided by first and second drive units (11a, 11b), wherein the first drive unit (11a) provides for a circumferential motion of a first subset of the suspension elements (13, 13b) on a first closed loop trajectory and the second drive unit (11b) provides for a circumferential motion of a second subset of the suspension elements (13, 13b) on a second closed loop trajectory; and/or wherein at least one load/cargo is carried by at least one hoist accommodated on the vehicle.

14. Computer program comprising instructions which, when the program is executed by a computer, cause the computer to execute the steps of the method according to at least one of the method claim 12 or 13 in context with provision and control of the circumferential guiding/driving motion, especially by controlling at least one drive unit (11, 11a, 11b, 11c).

15. Use of at least one crawler type drive unit (11, 11a, 11b, 11c) accommodating first and second circumferential tracks (12a, 12b) having different circumferential shapes/contours, for hanging/suspending and optionally also actively driving a crawler type ceiling vehicle (10) in order to travel in a suspended manner especially headlong at a ceiling structure (1), especially for hanging/suspending a crawler type ceiling vehicle (10) according to one of claims 1 to 7, especially in a method according to one of claims 12 to 13, wherein the ceiling vehicle (10) is suspended by means of a plurality of suspension elements (13, 13b) coupling the ceiling vehicle (10) to the ceiling structure (1), wherein the suspension elements (13, 13b) are attached to the first circumferential track at predefined first longitudinal positions corresponding to a raster defined by the ceiling structure (1), wherein a/the circumferential guiding/driving motion is provided by the at least one drive unit (11, 11a, 11b, 11c) such that the vehicle moves along the ceiling structure (1) by decoupling a subset of the plurality of suspension elements (13, 13b) from resp. coupling them into the ceiling structure (1) when the suspension elements (13, 13b) are guided/driven along the circumferential tracks.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0090] These and other aspects of the present invention will also be apparent from and elucidated with reference to the embodiments described hereinafter. Individual features disclosed in the embodiments can constitute, alone or in combination, an aspect of the present invention. Features of different embodiments can be carried over from one embodiment to another embodiment. In the drawings:

[0091] FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1J, 1K, 1L, 1M, 1N, 1O show in perspective views and in side views components of a ceiling vehicle according to one embodiment;

[0092] FIGS. 2A, 2B, 2C show in perspective views an arrangement of suspension elements and respective arrangement along a circumferential track of a ceiling vehicle according to one embodiment;

[0093] FIGS. 3A, 3B, 3C show in perspective views details of suspension elements of a ceiling vehicle according to one embodiment;

[0094] FIGS. 4A, 4B, 4C, 4D, 4E, 4F, 4G show in perspective views and in side views components of a ceiling vehicle according to a further embodiment;

[0095] FIGS. 5A, 5B, 5C, 5D illustrate in different perspective views an exemplary path of a motion of a ceiling vehicle according to one of the embodiments;

[0096] FIGS. 6A, 6B show, in side views, components of a ceiling vehicle according to two further embodiments (full suspension, and suspension with respect to vertical forces of inertia and lateral forces);

[0097] FIGS. 7A, 7B, 7C, 7D illustrate in different perspective views exemplary paths of motion (orientations of operation) of a ceiling vehicle according to one of the embodiments;

[0098] FIGS. 8A, 8B, 9A, 9B show in perspective views ceiling vehicles according to further embodiments (with and without counter bearing);

[0099] FIGS. 10A, 10B show in perspective views a ceiling vehicle according to a further embodiment;

[0100] FIGS. 11A, 11B, 11C, 14A, 14B show in perspective views details of suspension elements (and their suspension) of a ceiling vehicle according to embodiments, especially according to the embodiment shown in FIG. 10;

[0101] FIGS. 12A, 12B show in side views details of suspension elements of a ceiling vehicle according to embodiments, especially according to the embodiment shown in FIG. 10;

[0102] FIG. 13 shows in a perspective view details of a ceiling vehicle according to embodiments, especially according to the embodiment shown in FIG. 10;

[0103] FIG. 15 shows in a side view components of a drive unit of a ceiling vehicle according to embodiments, especially according to the embodiment shown in FIG. 10;

[0104] FIGS. 16A, 16B show in perspective views some of the details of suspension elements of a ceiling vehicle according to embodiments, especially according to the embodiment shown in FIG. 10.

DETAILED DESCRIPTION

[0105] First, the reference signs are described in general terms; individual reference is made in connection with respective figures.

[0106] The present invention provides for a ceiling vehicle 10 having at least one drive unit 11 (especially crawler track-like), especially a first drive unit 11a and a further (second) drive unit 11b and optionally also a further (third) drive unit 11c. The vehicle 10 is configured for traveling along a ceiling structure 1 exhibiting a predefined raster la which is, e.g., defined by T-profiles resp. T-rails 1.1 or any such profile rails. The profiles 1.1 exhibit at least one wheel tread 1.2, and optionally, a power rail 1.3 providing for energy supply can be arranged at the profiles also. The vehicle 10 is coupled to the structure 1 and suspended via a plurality of suspension elements 13 (e.g. each including at least one chain element). A crawler type ceiling vehicle arrangement 100 is composed of at least one ceiling vehicle 10 and at least one ceiling structure 1.

[0107] The at least one drive unit 11 provides for a drive mechanism 11.1 (with or without motor(s) or actuator(s)) which allows for circumferential motion of the suspension elements 13 along circumferential tracks 12, namely simultaneously along a first and a second circumferential track 12a, 12b, which tracks exhibit individual shapes/contours XZa, XZb. Preferably, the tracks only extend two-dimensionally (2D), i.e. in a plane, and the shape is different at least in curved sections of the tracks. Each track 12a, 12b exhibits a parallel/linear section 12p (resp. two parallel sections) and a redirection/curved section 12r (resp. two curved sections). A lateral area resp. surface shell 11.2 of the at least one drive unit is preferably flat, plane, even, respectively on each lateral side. Such a configuration is also favourable in view of interconnection of several drive units.

[0108] According to one embodiment, the vehicle 10 exhibits at least one further (second) drive unit 11b exhibiting first and second circumferential tracks 12a, 12b and accommodating a plurality of further suspension elements 13b which are arranged mirror-inverted, with respect to the suspension elements 13 of the first drive unit 11a. The first and second drive units 11a, 11b provide for a traveling motion (e.g. by a synchronous guiding/driving motion of/to the suspension elements), and these drive units 11a, 11b can be interconnected, e.g. via crossbeams or the like. Also, the first and second drive units 11a, 11b may provide for different driving motions, e.g. in order to force a non-linear, but curved/curvilinear traveling motion. The desired/required traveling motion can be controlled via a control unit 30 which can be coupled to at least one motor or actuator 17 (which is optional). In particular, the vehicle can be provided as a kind of passive vehicle which traveling motion is induced by external forces; in such a configuration, the inventive kinematics provide for hanging/suspending the vehicle, but not for actively driving the vehicle for any traveling motion. The drive section may also comprise at least one gear unit 18 configured for interacting with the track(s) and at least one energy storage unit 19. A sensor arrangement 40, e.g. comprising position sensors and velocity sensors and/or weight sensors and/or gyroscopes, may provide sensor data to the control unit.

[0109] Each suspension element 13 exhibits a first pulley 13.1 and a second pulley 13.2, and optionally, a wheel 13.3 is provided at the free end of the suspension element 13 (bearing point P13). The first and second pulleys are arranged on a lever arm 13.5 in distance from/to each other (y-offset, longitudinal extension y13 of lever arm); the bearing point P13 resp. the wheel 13.3 is arranged at a protruding section resp. suspension arm 13.6 (z-offset). At the free end of the suspension arm, optionally, a current collector resp. power-slider 13.4 (conductive slider for energy transfer) is provided in an arrangement geometrically corresponding to a/the power rail 1.3 of the respective profile 1.1. The plurality of suspension elements 13 of a/the respective drive unit 11 can be interconnected via longitudinal connecting elements 15 which can ensure a closed loop 15a of interrelated suspension elements. Thus, the suspension elements 13 are coupled to the respective circumferential tracks.

[0110] In other words: The suspension elements preferably exhibit a wheel 13.3 performing a rolling motion on the profile, allowing for motion which is orthogonal to the motion predefined and evoked by the tracks, wherein the wheel is positioned orthogonally with respect to the first and second pulleys. Optionally, the wheel can be motorised e.g. by means of further actuators or motors. The first pulley 13.1 is engaged with the first or second circumferential track, thereby following that track; also, the second pulley 13.2 is engaged with the first or second circumferential track, thereby following that track (which is different from the track engaged by the first pulley, i.e. vice versa). Lever arm 13.5 is preferably L-shaped, especially provided as integral element in one piece (massive, solid).

[0111] Preferably, the structure 1 and its raster la is defined by profiles 1.1 being arranged in parallel and with similar distance (pitch) to adjacent profiles. Each profile is preferably configured to support geometries/surface(s) which are adequate for interaction with the wheel(s) of the suspension elements (e.g. T-profile, C-profile, L-profile, l-profile), and a series of such profiles preferably provides for a planar surface at least in sections.

[0112] By means of the circumferential tracks and the suspension elements, the (respective) drive unit provides for de-/coupling kinematics 20 which ensure both vertical motion kinematics 20a and non-circular pivot motion kinematics 20b. Thereby, de-/coupling of each suspension element can be effected via circumferential motion along the tracks without the need of any axial telescopic motion within each suspension element. I.e., the suspension element can be designed as purely mechanic unit.

[0113] In particular, in context with logistic tasks, the vehicle 10 may exhibit at least one hoist unit 50 providing for a traction mechanism 51 (especially with rope winch) and having at least one transmission means 53 (especially a rope).

[0114] In the following, the kinematics provided by the guiding/driving motion along the circumferential tracks is described in general, first:

[0115] The first pulley 13.1 of each suspension element 13 rotates about a first pulley axis X13.1 and defines a first guiding point G13.1 (coupling the first track and the respective suspension element), and vice versa, the corresponding point of the corresponding circumferential track defines that first guiding point G13.1 for each suspension element. Likewise, the second pulley 13.2 of each suspension element 13 rotates about a second pulley axis X13.2 (which is preferably aligned in parallel) and defines a second guiding point G13.2 (coupling the second track and the respective suspension element). When referring to the kinematics of each suspension element, an instantaneous centre of rotation Cr of each suspension element is defined by the axis X13.1 of the first pulley 13.1 being coupled to the first track 12a, wherein coupling/attachment/fixation can be ensured e.g. at the axial section between a/the suspension arm 13.6 and the first pulley 13.1 (cf. FIG. 3B). The two tracks 12a, 12b are arranged with respect to another in such a manner that the contacting/bearing point/area P13 of the respective suspension element 13 can be hooked or hitched on the ceiling structure. According to a preferred arrangement, the wheel 13.3 of each suspension element rotates about a wheel axis Y13.3 which is preferably aligned orthogonally to the first and second pulley axis X13.1, X13.2. Since each suspension element 13 is coupled to the tracks 12a, 12b in predefined positions, namely in a predefined first longitudinal position y12a via the first pulley 13.1 and in a predefined second longitudinal position y12b via the second pulley 13.2, when driving the tracks resp. when guiding the suspension elements along the tracks, the bearing point P13 at the free end of the suspension element 13 is guided according to the relative position/contour and distance of the tracks.

[0116] In the figures, (x) designates a/the first spatial direction (especially cross direction, especially direction of longitudinal extension of T-profiles), and (y) designates a/the second spatial direction (especially longitudinal direction or momentary driving direction of the drive units), and (z) designates a/the third spatial direction (especially vertical direction).

[0117] FIG. 1A shows a ceiling vehicle 10 exhibiting a drive unit 11 and suspension elements 13, wherein a subset of the suspension elements 13 is momentarily coupled to a/the ceiling structure 1, namely to T-profiles. The suspension elements 13 are guided (and optionally also actively driven) along two circumferential tracks (not shown, cf. FIG. 1C), and decoupling is carried out in curved sections of the tracks.

[0118] FIG. 1B, 1C, 1D, 1E show separate components of the respective drive unit 11, 11a, 11b, 11c. At least one drive 17 (which is optional, i.e., which can be provided if active driving motion to the suspension elements is desired) provides for circumferential motion of the tracks 12a, 12b, especially by means of at least one gear unit 18 engaging the tracks. It is shown that the de-/coupling kinematics are provided within the curved sections 12r of the first and second circumferential tracks 12a, 12b. In contrast, within the parallel section(s) 12p, the suspension elements 13 remain in predefined relative positions at/with respect to the ceiling structure. In that section, the axis Y13.3 of the wheel 13.3 of the respective suspension element 13 is aligned parallel to the parallel section(s) 12p of the tracks.

[0119] In case the vehicle exhibits several drive units 11a, 11b, some of these components may also be arranged in a mirror-inverted manner, especially the suspension elements (cf. FIG. 4A). Thus, any detailed description of the figures relating to any separate/single component of the respective drive unit may also describe a similar configuration of any further drive units or any further redundant components.

[0120] FIG. 1F, 1G illustrate the curved sections 12r in more detail; it can be seen that both the radius of curvature and the distance of the tracks with respect to each other deviates/changes in value and direction, thereby effecting a pivot motion of the suspension arm 13.6 (protruding section) and the wheel 13.3 resp. bearing point P13 of the respective suspension element 13 (especially pivoting within the plane yz as shown in FIG. 1F and pivoting about an x-axis and around the instantaneous centre of rotation Cr). Thus, both vertical motion kinematics 20a and non-circular pivot motion kinematics 20b can be provided by means of rigid/stiff components being guided/driven along two circumferential tracks with different shape/contour.

[0121] FIG. 1H, 1J, 1K, 1L, 1M, 1N, 1O show some more details of the de-/coupling kinematics 20. In particular, it can be seen that the first track 12a has a curvature bent up (upwards), thereby effecting a slight lifting of the wheel 13.3 from the wheel tread 1.2, namely when the first pulley 13.1 is passing that section. In particular, apart from one single section, the shape/contour XZb of the second circumferential track 12b runs (is arranged) within the shape/contour XZa of the first circumferential track 12a.

[0122] FIG. 2A, 2B, 2C show a plurality of suspension elements 13 being interconnected via longitudinal connecting elements 15 which thereby ensure a closed loop 15a of interrelated suspension elements. The suspension elements 13 are coupled to the respective circumferential tracks 12a, 12b via the first and second pulleys 13.1, 13.2.

[0123] In the embodiment shown in FIG. 2, the first and second pulleys 13.1, 13.2 are arranged on opposite lateral sides of the respective suspension element 13. Thus, the closed loop 15a of interrelated suspension elements is arranged between the first and second tracks 12a, 12b which extend on both lateral sides of the closed loop 15a.

[0124] The tracks 12a, 12b can be made of any kind of rail guide system components, in particular including at least one chain, belt, cable or the like traction or transmission means. The tracks 12a, 12b may comprise different guide/rail sections coupled together, each exhibiting a different radius of curvature or being linear. Also, the tracks 12a, 12b can be formed/made by on single continuous/coherent rail.

[0125] FIG. 3A, 3B, 3C show some more details of the suspension elements 13 and the connecting elements 15. E.g., the connecting elements 15 are coupled to the lever arm 13.5 at the axis X13.1 if the first pulley 13.1, thereby facilitating pivot motion about that axis (resp. around the respective instantaneous centre of rotation Cr).

[0126] FIG. 4A, 4B, 4C, 4D, 4E, 4F, 4G show an embodiment of a vehicle 10 exhibiting three drive units 11a, 11b, 11c which can be interrelated/connected e.g. via cross-beams or the like. In contrast to the configuration at the first drive unit 11a, the suspension elements 13b of the second drive unit 11b are arranged in mirror-inverted manner, but the suspension elements 13 of the third drive unit 11c are arranged in the same manner as the suspension elements 13 of the first drive unit 11a. As can be seen in FIG. 4E, 4F, that configuration allows for a really good security and stability level (both types of suspension elements 13, 13b are guided along the T-profiles, but on different lateral sides of the T-profiles). Alternatively, the vehicle 10 may only comprise two drive units 11a, 11b.

[0127] FIG. 5A, 5B, 5C, 5D show different kinds of traveling motions which can be effected by means of the vehicle 10 described herein. As already described further above, the present invention allows for two-dimensional traveling motion both in a first spatial direction (x) corresponding to the longitudinal direction/extension of the T-profiles 1.1 (dashed line arrow), and in a second spatial direction (y) corresponding to the driving direction resp. to the direction/extension of the tracks (dotted line arrow).

[0128] It should be mentioned that the T-profiles shown in the figures may also be provided as other kinds of profile rails; i.e., the inventive mechanism/kinematics is/are not limited to use of T-profiles only; rather, the skilled person is aware of the fact that also other profiles offering adequate suspension for the suspension elements and optionally also a guiding track to the wheels can be used.

[0129] In the following, further aspects/details of embodiments of the present invention are described in more detail. For any reference signs or elements/components or aspects not explicitly mentioned/described, it is referred to above mentioned embodiments, respectively. The embodiments described in the following passages exhibit a first drive unit comprising a chain drive, and the first circumferential track comprises a chain (with a closed loop of interrelated chain elements arranging the corresponding suspension elements and optionally also arranging counter bearing elements), and the longitudinal connecting elements of that first drive unit are provided in the form of chain elements.

[0130] FIG. 6A shows a vehicle exhibiting means for avoiding any relative motion of the vehicle with respect to the structure (full suspension especially also in view of any relative motion orthogonally/normally with respect to the structure), and FIG. 6B shows a configuration which at least ensures secure the suspension in view of vertical forces of inertia and lateral forces (suspension devoid of counter bearings).

[0131] FIGS. 7A, 7B, 7C, 7D illustrate a ceiling vehicle arrangement 100 comprising a ceiling vehicle 10 exhibiting three drive units 11a, 11b, 11c. As already described further above, the present invention allows for two-dimensional traveling motion both in a first spatial direction corresponding to the longitudinal direction/extension of the T-profiles 1.1 (dashed line arrow), and in a second spatial direction corresponding to the driving direction resp. to the direction/extension of the tracks (dotted line arrow). Depending on the orientation of the structure/T-profiles 1.1, the first and/or second spatial direction may also comprise a vertical (z-) component, as illustrated in FIG. 7C, 7D (inclined plane/level).

[0132] Therein, coordinates x, y shown in the figures in context with inclined planes refer to the longitudinal extension (x) of the (ceiling) structure.

[0133] FIGS. 8A, 8B show some more details of a ceiling vehicle 10 exhibiting three drive units 11a, 11b, 11c drive units arranged laterally with respect to each other, wherein the drive unit 11b arranged there between (in the middle) does not exhibit any suspension elements but counter bearings 16, and FIGS. 9A, 9B show some more details of a ceiling vehicle 10 exhibiting two drive units 11a, 11c (each without counter bearing). In the embodiment shown in FIG. 8, the second drive unit 11b provides for counter bearings 16 which are coupled to the chain 15a, i.e., the first circumferential track provides for positioning and motion of the counter bearings 16. It should be noted that in the embodiment shown in the figures, theses counter bearings 16 are intended for interfering with the structure only at a face side, and therefore, no de-/coupling kinematics are provided in context with these counter bearings 16. Therefore, there is no need for provision of any further second circumferential track at/for the second drive unit 11b arranged in the middle. Thus, in this embodiment, the second drive unit 11b arranged in the middle and accommodating (only) the counter bearings only exhibits a/the first circumferential track.

[0134] FIGS. 10A, 10B show some details of a drive unit 11, 11b only accommodating counter bearings but no suspension elements.

[0135] FIGS. 11A, 11B, 11C and FIGS. 12A, 12B and FIG. 13 and FIGS. 14A, 14B show some kinematic aspects of drive units accommodating/arranging/guiding both suspension elements 13 and further suspension elements 13b. FIG. 13 also illustrates that one (each) drive unit 11 may comprise the first circumferential track (here: provided/defined by the chain 15a) and two second circumferential tracks 12b, wherein these two second circumferential tracks 12b are arranged asymmetrically, i.e., the shape/contour XZb is asymmetrical. Such an arrangement also allows for providing de-/coupling kinematics for both a plurality of suspension elements 13 and a plurality of further suspension elements 13b, especially in such a manner that both types of suspension elements 13, 13b may interact and engage in the same (but asymmetrical) manner with the structure 1, especially at the same profile rail at opposite lateral sides, respectively. Such an arrangement may also ensure a high security and stability level already by means of one single drive unit 11. Thus, scaling (two, three or even more) of the drive units is realizable in even more flexible manner, and individual arrangements can be optimized for each application.

[0136] It should be noted that the first circumferential track resp. a/the chain may/can provide for guiding and driving both the suspension elements 13 and the further suspension elements 13b; both types of suspension elements 13, 13b can be coupled, e.g., via a protruding axial section (guiding bolt or shaft) 13.7 to the chain structure (cf. FIG. 16B) which protrudes vis-a-vis of the first pulley 13.1, especially along its axis X13.1. In particular, the suspension elements 13 and the further suspension elements 13b are arranged with longitudinal offset (y) and mirror-inverted on both sides of the chain 15a. In particular, the longitudinal distance (y) of the respective suspension element 13 and the respective further suspension element 13b of a respective pair of suspension elements 13, 13b corresponds to the extension in cross direction (y) of each element/profile of the (ceiling) structure.

[0137] FIG. 15 also shows a guiding plank or rail 14 allowing for guiding the first circumferential track resp. the chain more precisely.

[0138] FIGS. 16A, 16B show a further embodiment of suspension elements 13, wherein in comparison with the suspension elements described above in context with FIG. 3, these suspension elements exhibit two wheels or pulleys 13.3 arranged and configured for interacting with the structure 1, and these suspension elements may also exhibit a further pulley which is suspended around an axis extending in the z-direction (as shown in FIG. 16B). That optional further pulley may ensure further/improved support and guiding with respect to the structure.

[0139] In FIG. 6A, 10A, 11C, a contact point distance Ad provided by different protruding distances d1, d2 of the suspension element's contact point P13 and of the counter bearing's contact point (free end, especially wheel/pulley) is illustrated by referring to the relative arrangement at the (ceiling) structure, respectively.

LIST OF REFERENCE SIGNS

[0140] 1 ceiling structure [0141] la raster defined by the ceiling structure [0142] 1.1 profile rail, especially T-profile resp. T-rail [0143] 1.2 wheel tread [0144] 1.3 power rail [0145] 10 ceiling vehicle [0146] 11 drive unit (especially crawler track-like) [0147] 11.1 drive mechanism [0148] 11.2 lateral area resp. surface shell of the drive unit(s) [0149] 11a first drive unit, especially chain drive unit [0150] 11b further (second) drive unit [0151] 11c further (third) drive unit [0152] 12 circumferential track [0153] 12a first circumferential track, especially comprising a chain [0154] 12b second circumferential track [0155] 12p parallel section/linear section of the track [0156] 12r redirection section/curved section of the track [0157] 13 suspension element resp. chain element [0158] 13b further suspension element [0159] 13.1 first pulley [0160] 13.2 second pulley [0161] 13.3 wheel [0162] 13.4 current collector resp. power-slider (conductive slider for energy transfer) [0163] 13.5 lever arm [0164] 13.6 protruding section/suspension arm [0165] 13.7 protruding axial section (guiding bolt or shaft) [0166] 14 guiding plank or rail [0167] 15 longitudinal connecting element, especially chain element [0168] 15a closed loop of interrelated suspension elements, especially chain [0169] 16 counter bearing [0170] 16.1 wheel, pulley [0171] 17 motor or actuator (optional), especially chain drive [0172] 18 gear unit [0173] 18a further gear unit [0174] 18b chain tensioning device [0175] 19 energy storage unit [0176] 20 de-/coupling kinematics [0177] 20a vertical motion kinematics [0178] 20b non-circular pivot motion kinematics [0179] 30 control unit [0180] 40 sensor arrangement [0181] 50 hoist unit [0182] 51 traction mechanism, especially rope winch [0183] 53 transmission means, especially rope [0184] 100 crawler type ceiling vehicle arrangement [0185] Cr instantaneous centre of rotation [0186] d1 protruding distance of the suspension element's contact point [0187] d2 protruding distance of a/the counter bearing's contact point [0188] d contact point distance [0189] G13.1 first guiding point or axis (coupling the first track and the suspension element) [0190] G13.2 second guiding point or axis (coupling the second track and the suspension element) [0191] P13 contacting/bearing point/area of the suspension element with the ceiling structure [0192] X13.1 first pulley axis [0193] X13.2 second pulley axis [0194] XZa shape/contour of the first circumferential track [0195] XZb shape/contour of the second circumferential track [0196] Y13.3 wheel axis [0197] y12a, y12b predefined first and second longitudinal positions [0198] y13 longitudinal extension of lever arm [0199] x first spatial direction, especially direction of longitudinal extension of T-profiles [0200] y second spatial direction, especially longitudinal direction or driving direction [0201] z third spatial direction, especially vertical direction