Hydraulic jack

Abstract

The invention relates to a hydraulically operated jack (1) comprising a lifting support (3) pivotable about a horizontal axis (2) and movable from a lower starting position (A) to an upwardly pivoted lifting position (H), a support plate (5) arranged on the lifting support (3) for supporting a part of a vehicle to be lifted, a hydraulic cylinder (4) whose actuation causes a pivoting movement of the lifting support (3), a pump unit (6) for actuating the hydraulic cylinder (4), at least one roller element (9) for rolling the jack (1) to a work location desired for lifting a vehicle, a rigid base structure (10) which rests on the ground (U) at the work location when a vehicle is being lifted and prevents lateral movements of the jack (1), wherein the cylinder housing of the hydraulic cylinder (4) is rigidly and immovably connected to the base structure (10) of the jack (1).

Description

[0001] The present invention relates to a hydraulically operated car jack according to the preamble of claim 1. This car jack comprises a lifting support pivotable about a horizontal axis, which can be moved from a lower starting position to an upwardly pivoted lifting position for lifting a vehicle, and a support area arranged on the lifting support, in particular a support plate for supporting a part of a vehicle to be lifted, such as the body, chassis, or frame structure of the vehicle. Furthermore, the car jack comprises a hydraulic cylinder with a cylinder housing and a piston slidably mounted therein and connected to a piston rod, wherein the hydraulic cylinder or the piston rod is operatively connected to the lifting support such that actuation of the hydraulic cylinder, i.e., a displacement of the piston and thus of the piston rod relative to the cylinder housing, causes a pivoting movement of the lifting support.Furthermore, the jack includes a pump unit hydraulically connected to the hydraulic cylinder for actuating the hydraulic cylinder, as well as at least one roller element, for example a pair of rollers or a roller, over which the jack can be driven or rolled to a work location desired for lifting a vehicle.

[0002] Hydraulically operated jacks of this type are commonly used for the controlled raising and lowering of vehicles, such as cars or motorhomes. They are used in both private and commercial settings, particularly for changing vehicle wheels.

[0003] The most widespread type is the trolley jack, which, thanks to several wheels, some of which can swivel around a vertical axis, offers increased maneuverability. For maneuvering, trolley jacks typically have an elongated operating lever which, in addition to serving as a steering lever, can also act as a pump lever to operate a hydraulic cylinder and the associated lifting support of the trolley jack. Such a hydraulic trolley jack is known, for example, from DE 10 2019 121 343 B3.

[0004] From DE 20 2007 002 358 U1 a hydraulically operated trolley jack is known in which the operating lever can also be pivoted to one side about a vertical pivot axis to enable use even in confined spaces.

[0005] From DE 20 2009 018 187 U1 a hydraulic trolley jack with a double piston pump is known.

[0006] Because the support plate or support area at the free end of the lifting leg of a trolley jack moves along an arc-shaped path when the lifting leg is raised, the entire trolley jack undergoes a lateral balancing movement during the lifting motion. During this movement, the trolley jack rolls to one side on its rollers. This lateral forward or backward movement of the jack can compromise safety when lifting a vehicle.

[0007] From DE 198 39 835 A1, a lifting device for vehicles is known which does not have a rolling element for rolling the device, but rather a rigid base structure that rests on the ground when a vehicle is lifted. Moving the lifting device to another location is therefore very difficult.

[0008] From EP 0 336 927 A1, a mobile lifting platform for raising motor vehicles is known, which has rollers at one end of a base frame, allowing it to be rolled to a desired work location. The other end of the base frame rests on the ground when a motor vehicle is being lifted.

[0009] The object of the present invention is to create a structurally simple hydraulically operated jack of the type mentioned above, which is easy to handle despite its compact design and offers increased safety.

[0010] This problem is solved according to the invention by a hydraulically operated jack according to claim 1. Advantageous embodiments and expedient further developments of the invention are set forth in the dependent claims.

[0011] The solution according to the invention provides that the hydraulic cylinder is rigidly and immovably connected to the base structure of the jack by means of its cylinder housing. The cylinder housing is fixed and positionally stable, meaning it cannot be rotated, pivoted, or translationally displaced on the base structure. This results in a particularly simple design that requires no means for a movable or pivotable mounting of the hydraulic cylinder.

[0012] Because the jack has a rigid base that rests on the ground at the work site during both lifting and lowering, lateral movement of the jack relative to the ground in all directions is reliably prevented during the lifting process. The rigid base of the jack remains immobile on the ground throughout the entire lifting operation. This offers a significant advantage, as the elimination of any lateral movement significantly increases safety when lifting a vehicle.

[0013] The jack according to the invention is inexpensive to manufacture due to its simple design and is easy to handle. Furthermore, it is characterized by a very compact design, which has a particularly low profile in the lowered starting position, so that the jack can also be used on very low-slung vehicles. Despite this, the jack can still achieve considerable lifting heights.

[0014] It is particularly advantageous if the lifting support has a support area located at an end of the support that is remote from or facing away from the support plate, and which can be moved along a guide track on or against the floor structure, wherein the jack has at least one connecting strut that is pivotably articulated on one side to a first pivot point located on the floor structure and directly or indirectly rigidly connected to it, and on the other side to a second pivot point located in a central area of ​​the lifting support between the support plate and the support area, and directly or indirectly rigidly connected to it. Advantageously, a horizontal axis is located in the support area of ​​the lifting support, about which the lifting support can be pivoted up and down.

[0015] In this case, the first pivot point of the connecting strut can advantageously be arranged on a pivot element that is integrally formed with the cylinder housing or on a pivot element that is firmly connected to the cylinder housing.

[0016] For the purposes of the present patent application, the linkage of a first element to a second element means that the two elements are connected to each other in a hinged manner, whereby the hinged connection can be made directly or indirectly via interposed elements.

[0017] It is particularly advantageous if the at least one roller element is arranged and mounted on the support area of ​​the lifting leg, and if, in the lower starting position of the lifting leg, it projects laterally beyond the floor structure in the direction of the guide track. In this way, the at least one roller element can be brought into contact with the ground when the jack is lifted at the end opposite the roller element, preferably using a handle provided for this purpose. This allows the jack, raised on one side, to be easily moved and rolled to a work location desired for lifting a vehicle. As soon as the jack is lowered again at the work location, the at least one roller element loses contact with the ground, so that the jack rests immobile on the ground via its rigid base structure.

[0018] It is particularly advantageous if the at least one roller element rolls along the top surface of the floor structure when the lifting support is raised into a lifting position, with the top surface of the floor structure thus forming a straight guide path for the support area of ​​the lifting support. In this way, the at least one roller element can perform two functions simultaneously: firstly, it allows the jack to be rolled to the desired work location before lifting a vehicle, and secondly, during operation of the jack, it guides the support area of ​​the lifting support along the guide path formed by the top surface of the floor structure. During the lifting process, the support forces exerted on the lifting support by the raised vehicle are transferred to the ground via the floor structure. Lateral forces acting during the lifting process can also be absorbed by the guide path.

[0019] It is particularly advantageous if the longitudinal direction of the hydraulic cylinder, defined by the longitudinal direction of the piston rod of the hydraulic cylinder, is aligned along the straight guide path for the support area of ​​the lifting leg or parallel to this guide path. Preferably, the hydraulic cylinder extends parallel to the top surface of the floor structure, so that the piston rod can be extended and retracted parallel to the top surface of the floor structure. The hydraulic cylinder is thus arranged horizontally and remains unchanged in this horizontal orientation even during the lifting process.

[0020] According to a particularly preferred embodiment of the invention, the hydraulic cylinder is designed to be double-acting and the free end of the piston rod is articulated to the support area of ​​the lifting support, preferably to the axis of the at least one roller element.

[0021] Advantageously, the lifting support can be raised from the lower starting position to an upwardly pivoted lifting position by inserting the piston rod into the cylinder housing, and lowered from an upwardly pivoted lifting position to the lower starting position by extending the piston rod out of the cylinder housing.

[0022] It is particularly advantageous if at least one shut-off valve or safety valve is integrated into the hydraulic cylinder or into a valve block connected to it, preventing the piston rod from extending unintentionally from the hydraulic cylinder. This prevents the lifting support from unintentionally lowering from an upwardly pivoted lifting position to its lower starting position.

[0023] According to a particularly preferred embodiment of the invention, a locking element is arranged on the support area of ​​the lifting support, preferably in the region of the axis of the at least one roller element. This locking element can interact positively with locking detents or with a rack and pinion structure formed on the base structure. In this way, additional mechanical safety against unintentional lowering of the lifting support is achieved.

[0024] It is particularly advantageous if the locking element is spring-loaded and pressed against the locking detents or the rack structure, and if it can be disengaged from the locking detents or the rack structure by a release element, preferably a Bowden cable or an electromagnetic actuator, to allow the lifting support to pivot down into its starting position. The locking element can preferably be formed by a spring-loaded pawl.

[0025] According to a further particularly preferred embodiment of the invention, the lifting support is formed by two lifting arms located on either side of the hydraulic cylinder, which are rigidly connected to each other and thus cannot be moved relative to each other, and can therefore only be moved together. The hydraulic cylinder is thus located between the two lifting arms.

[0026] It is particularly advantageous if the jack also has two connecting struts located on both sides next to the hydraulic cylinder, each of which is pivotally connected on one side to a first pivot point located on the floor structure and thus directly or indirectly fixed to it, and on the other side to a second pivot point located on one of the two lifting arms and thus directly or indirectly fixed to it.

[0027] A particularly compact design of the jack can be achieved by forming the base structure with a plate that provides a common or separate guide track for each roller element on its upper surface.

[0028] According to a particularly preferred embodiment of the invention, the jack comprises a parallel arm or two parallel arms, each assigned to a lifting arm, which is / are articulated on the one hand in the region of its free end to the piston rod and on the other hand to the support plate, such that the parallel arm or parallel arms together with the lifting support or with the two lifting arms forming the lifting support form a parallelogram arrangement in a manner known per se and thus hold the support plate parallel to the floor structure, preferably horizontally, at every lifting height.

[0029] According to a further particularly preferred embodiment of the invention, the jack comprises an electric motor that drives the pump unit for actuating the hydraulic cylinder. Advantageously, the jack has a control unit electrically connected to the electric motor, which allows the electric motor to be controlled for actuating the jack. The control unit, in turn, can advantageously be connected to a control panel comprising operating elements such as switches, via which the jack can be operated manually.

[0030] Advantageously, at least one battery, preferably replaceable, can be arranged on the jack to supply energy to the electric motor.

[0031] Furthermore, it is particularly advantageous if the pump unit is formed by a reversing unit driven by an electric motor. This eliminates the need for directional control valves for the hydraulic cylinder. It is especially beneficial if the reversing unit is located directly next to the hydraulic cylinder and connected wirelessly, i.e., without hoses or pipes, directly to the hydraulic cylinder or to a valve block connected to the hydraulic cylinder. This eliminates the need for additional hydraulic lines, which pose a risk of damage or leaks, and results in a particularly compact, simple, and safe design.

[0032] It is particularly advantageous if the control unit is connected to a receiver, via which the jack can be operated remotely using a wired or wireless control unit.

[0033] The present invention further relates to an arrangement of two or more jacks of the type mentioned above, in which the control units of the individual jacks are connected to each other via cable or wirelessly, in particular via radio or WLAN. The control units of the jacks can thus communicate with each other.

[0034] In such an arrangement of at least two jacks, it is particularly advantageous if the control unit of one of the jacks, which acts as the master jack, is connected to a receiver via which all jacks can be operated remotely, either wired or wirelessly, using a control unit. The other jacks then function as slave jacks.

[0035] According to a particularly preferred embodiment of this arrangement of at least two jacks, the control unit of the master jack is connected to at least one tilt sensor, which can be detachably attached to a vehicle to be lifted. All jacks, interconnected by control technology, are controlled via the master jack's control unit using data from the at least one tilt sensor to achieve the desired alignment or leveling of the vehicle. The at least one tilt sensor provides data on the vehicle's current tilt to the master jack's control unit, which then uses this data to control the other jacks in order to achieve the desired alignment or leveling of the vehicle.In an arrangement of three or four jacks, the control unit of the master jack can advantageously be connected to two tilt sensors, which can be detachably attached to a vehicle to be lifted at an angle of preferably 90° to each other. A method that can be advantageously applied in this context is described, for example, in patent DE 10 2019 002 237 B4.

[0036] Further advantages and features of the invention will become apparent from the following description and the embodiment shown in the drawings.

[0037] They show: Figure 1: a perspective view of a jack according to the invention from a first direction, Figure 2: a perspective view of the jack from Figure 1 from a second direction, Figure 3: a side view of the jack Figure 1 from direction I into Figure 1 Figure 4: a side view of the jack made of Figure 1from direction II in Figure 2 Figure 5: a side view of the jack made of Figure 4 in the lower starting position, Figure 6: an enlarged sectional view of the locking element in the locked position, and Figure 7: the locking element made of Figure 6 in the release position.

[0038] The hydraulically operated jack 1 shown in the figures is used for selectively raising and lowering a section of a vehicle, such as a passenger car or motorhome. Depending on its size, it can also be used for larger vehicles such as buses or trucks.

[0039] The jack 1 comprises a lifting support 3 that pivots about a horizontal axis 2 and is raised from a lower starting position A by means of a hydraulic cylinder 4 ( Figure 5 ) into an upper lifting position H ( Figures 1 to 4) can be raised. At the upper end of the lifting support 3 in the lifting position H, a support plate 5 is articulated, forming the contact point for the part of the vehicle to be lifted, which can be, for example, a part of the chassis or a part of the vehicle's frame structure. To actuate the hydraulic cylinder 4 and thus also to actuate the lifting support 3 connected to it, a pump unit 6 is provided on the jack 1, hydraulically connected to the hydraulic cylinder 4. In the embodiment shown here, this pump unit is a reversing unit driven by an electric motor 7 connected to a control unit (not shown in detail here). Thus, depending on the direction of rotation of the electric motor 7, the lifting support 3 can be raised to the lifting position H or lowered to the starting position A.As an alternative to a reversible hydraulic power unit, a non-reversible hydraulic power unit can also be used, which is connected to corresponding control valves that can then also be operated by the control unit.

[0040] In the illustrated embodiment, the lifting support 3 consists of two lifting arms 3a, which are arranged on either side of the hydraulic cylinder 4 and each of which comprises a lower sub-arm 3b and an upper sub-arm 3c. The two sub-arms 3b and 3c, which are approximately the same length, are arranged laterally offset from each other and are connected to each other in a rotationally fixed manner at their center by a connecting element 3d which has an approximately semicircular cross-section.

[0041] At the lower end of the lifting support 3 in the lifting position H, which is opposite the support plate 5, a support area 8 is formed. A roller element 9, formed here by two rollers 9a, is mounted in this support area 8. The two rollers 9a, or rather the roller element 9 formed by them, is mounted on the axis 2 that rigidly connects the two lifting arms 3a and simultaneously forms the horizontal axis 2 about which the lifting support 3 can pivot.

[0042] According to the invention, the jack 1 comprises a rigid base structure 10, which here is formed by an elongated base plate 10a. When the jack 1 is used, i.e., when lifting and lowering a vehicle, this base structure 10 rests flat on the surface U at the work site, so that, due to the frictional forces acting between the base structure 10 and the surface U during use, lateral movements of the jack 1 relative to the surface in all directions are reliably prevented. By means of a suitably roughened surface structure on the underside of the base structure 10, the frictional forces preventing lateral movement of the jack 1, and thus also the operational reliability of the jack 1, can be further increased. The base structure 10 of the jack 1 remains immobile on the surface U throughout the entire lifting process.

[0043] On the upper side of the base plate 10a, which forms the rigid base structure 10, is a housing 11 containing, among other things, the pump unit 6 and the electric motor 7, as well as a control unit for the electric motor 7 and a replaceable battery for supplying power to the electric motor 7 and the control unit. The entire jack 1 thus forms a self-contained unit that can be operated without any additional energy connections such as hydraulic, pneumatic, or electrical lines.

[0044] Furthermore, the double-acting hydraulic cylinder 4, with its cylinder housing, is rigidly and immovably mounted on the top of the base plate 10a. The base of the cylinder housing, opposite the piston rod 12 and containing the two pressure ports of the hydraulic cylinder 4 and a safety valve, extends into the housing 11. Within the housing 11, the base of the hydraulic cylinder 4 lies directly adjacent to the reversing unit forming the pump unit 6, which is connected directly to the pressure ports of the hydraulic cylinder 4 or to a valve block of the hydraulic cylinder 4 without any intervening hoses or pipes.

[0045] At the end of the base plate 10a facing away from the housing 11, two guide tracks 13 are formed on the upper surface, in and on each of which a roller 9a of the roller element 9 can roll. The two guide tracks 13 are separated from each other by an intermediate ladder-shaped rack structure 14. During rolling, the two rollers 9a of the roller element 9 are guided in and on the two guide tracks 13. At the same time, the rollers 9a also support the support area 8 of the lifting support 3, so that the weight forces acting when lifting a vehicle are absorbed by the ground U via the rollers 9a of the roller element 9 and the base structure 10. The two lifting arms 3a are rigidly connected to each other by the axis 2, which is arranged in the section of the lower partial arms 3b that forms the support area 8.

[0046] Furthermore, on the upper surface of the base plate 10a, on both sides of the hydraulic cylinder 4, there is a fixed first pivot point 15 for each connecting strut 16. Two connecting struts 16 are provided, each pivotally connected at one end to one of the two first pivot points 15 and at the other end via a second pivot point 17 to an approximately central region of the two lifting arms 3a. The two second pivot points 17 lie on an axis 18, via which the two lifting arms 3a are also connected to each other. The axis 18 is surrounded on both sides by one of the two connecting elements 3d, each of which connects the two partial arms 3b and 3c of the two lifting arms 3a.

[0047] The piston rod 12 of the hydraulic cylinder 4 extends parallel to the two guide tracks 13. The free end of the piston rod 12 is articulated to the axis 2 by means of a bearing bushing 19 formed thereon; the two rollers 9a are also mounted on this axis. When the piston rod 12 is in its maximum extended position, the lifting support 3 is in the lower starting position A ( Figure 5 As the piston rod 12 is increasingly drawn into the housing of the hydraulic cylinder 4, which is rigidly connected to the base structure 10, the support area 8 of the lifting support 3, with the rollers 9a rolling on the guide tracks 13, increasingly approaches the housing of the hydraulic cylinder 4. Due to the leverage effect of the two connecting struts 16, the lifting support 3 is increasingly raised towards the upper lifting position H. The support plate 5 performs a lifting movement that is at least almost perfectly vertical.

[0048] Since an additional parallel arm 20 is arranged parallel to each of the two lifting arms 3a, the support plate 5 remains in its horizontal orientation throughout the entire lifting movement. The parallel arms 20 are articulated to the piston rod 12 at a distance from the axis 2 in the region of the free end of the piston rod 12, and at the same distance from the bearing of the support plate 5 on the lifting support 3, they are articulated to the support plate 5. Thus, the two parallel arms 20, together with the two lifting arms 3a, form a parallelogram arrangement that keeps the support plate 5 aligned parallel to the base plate 10a at every lifting height.

[0049] As an additional safety device to prevent unintentional lowering of the lifting support 3, a pivotably mounted locking element 21 is arranged at the free end of the piston rod 12. In the illustrated embodiment, it is designed as a pawl with a locking lug 22, which is positively pressed into the gaps 14a of the rack structure 14 by a spring element (not shown), such as a torsion spring, in order to block unintentional movement of the support area 8 away from the housing of the hydraulic cylinder and thus unintentional lowering of the lifting support 3. Alternatively, the locking element 21 can also be arranged on the support area 8 of the lifting support 3.

[0050] To enable the desired lowering of the lifting support 3, a release element (not shown here) is also provided, by which the locking lug 22 can be pivoted out of the gaps in the rack structure 14 against the spring force, thus allowing unblocked movement of the support area 8 in the direction that lowers the lifting support 3. The release element can, for example, be formed mechanically by a Bowden cable guided from the housing 11 via the axis 18 or preferably by an electromagnetic actuator.

[0051] As long as the lifting support 3 is in the lower starting position A ( Figure 5The two rollers 9a extend beyond the end of the base plate 10a, where they are freely rotatable. In this way, the rollers 9a can be brought into contact with the ground U by lifting the opposite side of the jack 1, preferably via a handle 23 arranged on the base plate 10a or on the housing 11, so that the jack, raised on one side, can be easily moved and rolled to a work location desired for lifting a vehicle.

Claims

1. Hydraulically operated jack (1), comprising: - a lifting support (3) pivotable about a horizontal axis (2), which can be moved from a lower starting position (A) to an upwardly pivoted lifting position (H), - a support plate (5) arranged on the lifting support (3) for supporting a part of a vehicle to be lifted, - a hydraulic cylinder (4) the actuation of which causes a pivoting movement of the lifting support (3), - a pump unit (6) for actuating the hydraulic cylinder (4), - at least one roller element (9) for rolling the jack (1) to a work location desired for lifting a vehicle, - a rigid base structure (10) which rests on the ground (U) at the work location when a vehicle is being lifted and prevents lateral movement of the jack (1), characterized by that the cylinder housing of the hydraulic cylinder (4) is rigidly and immovably connected to the base structure (10) of the jack (1).

2. Jack (1) according to claim 1, characterized by the fact that the lifting support (3) has a support area (8) facing away from the support plate (5), which can be moved on or along the floor structure (10) along a guide track (13), wherein the jack has at least one connecting strut (16) which is pivotably connected on one side to a first pivot point (15) located on the floor structure (10) and on the other side to a second pivot point (17) located between the support plate (5) and the support area (8) on the lifting support (3).

3. Jack (1) according to claim 2, characterized by the fact that that at least one roller element (9) is mounted on the support area (8) of the lifting support (3) and, in the lower starting position (A) of the lifting support (3), extends laterally in the direction of the guide track (13) beyond the floor structure (10).

4. Jack (1) according to claim 3, characterized by the fact thatthat at least one rolling element (9) rolls on the upper surface of the floor structure (10) forming the guide track (13) when the lifting support (3) is swung upwards.

5. Jack (1) according to one of claims 2 to 4, characterized by the fact that the guide track (13) for the support area (8) of the lifting support (3) is designed to be straight and the piston rod (12) of the hydraulic cylinder (4) is aligned along the guide track (13) or parallel to it.

6. Jack (1) according to claim 5, characterized by the fact that the hydraulic cylinder (4) is designed to be double-acting, and the free end of the piston rod (12) is articulated to the support area (8) of the lifting support (3), namely to the axis (2) of the at least one rolling element (9) on the lifting support (3).

7. Jack (1) according to claim 6, characterized by the fact thatthe lifting support (3) can be moved from the lower starting position (A) to an upwardly pivoted lifting position (H) by retracting the piston rod (12) into the cylinder housing, and that the lifting support (3) can be moved from an upwardly pivoted lifting position (H) to the lower starting position (A) by extending the piston rod (12) out of the cylinder housing.

8. Jack (1) according to claim 7, characterized by the fact that at least one shut-off valve or safety valve is integrated into the hydraulic cylinder (4) or into a valve block connected to the hydraulic cylinder (4), which prevents the piston rod (12) from being unintentionally extended out of the hydraulic cylinder (4).

9. Jack (1) according to any of the preceding claims, characterized by the fact thatat the support area (8) of the lifting support (3), preferably in the area of ​​the axis (2) of the at least one roller element (9), a locking element (21) is arranged on the lifting support (3), which can interact positively with locking detents (14a) provided on the floor structure (10).

10. Jack (1) according to any one of the preceding claims, characterized by the fact that it comprises an electric motor (7) by which the pump unit (6) can be driven, and that it comprises a control unit connected to the electric motor (7) by which the electric motor (7) can be controlled to operate the jack (1).

11. Jack (1) according to claim 10, characterized by the fact that the pump unit (6) is formed by a reversing unit, wherein the reversing unit is arranged directly next to the hydraulic cylinder (4) and is connected without lines directly to the hydraulic cylinder (4) or to a valve block of the hydraulic cylinder (4).

12. Jack (1) according to claim 10 or 11, characterized by the fact that the control unit is connected to a receiver, via which the jack (1) can be operated remotely by means of a control unit, either wired or wirelessly.

13. Arrangement of at least two jacks (1) according to one of claims 10 to 12, characterized by the fact that the control units of the jacks (1) are connected to each other via a cable or wirelessly via radio or WLAN.

14. Arrangement of at least two jacks (1) according to claim 13, characterized by the fact that the control unit of one of the jacks (1), which acts as the master jack, is connected to a receiver, via which all jacks (1) can be operated remotely by means of a control unit, either wired or wirelessly.

15. Arrangement of at least two jacks (1) according to claim 14, characterized by the fact thatthe control unit of the master jack is connected to at least one tilt sensor which can be detachably attached to a vehicle to be lifted, wherein all jacks (1) can be controlled via the control unit of the master jack to achieve a desired alignment or leveling of the vehicle based on the data available from the at least one tilt sensor.

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