Lifting device for vehicles

Abstract

Lifting device for vehicles, in particular agricultural machinery, trucks and / or construction machinery, comprising: at least a basic frame (31) with a mounting carrier (32) for wheel forks (33a, 33b) and a lifting column (34); at least two support feet (35a, 35b), wherein the support feet are removable and adjustable with respect to their relative position to the base frame (31); and at least one lifting carriage (36) which is movable along the lifting column (34), wherein the feet (35a, 35b) are mounted in such a way as to allow for adjustment of the lateral distance (d1) between the at least two feet (35a, 35b).

Description

[0001] The present disclosure relates to a lifting device for vehicles, in particular agricultural machinery, trucks and / or construction machinery, which makes it possible to lift vehicles with different tire diameters and / or different track widths. Background of the Revelation

[0002] Wheel grabs are used as mobile lifting devices to raise commercial vehicles such as trucks. They typically grip the vehicle's wheels to, for example, relieve pressure on axles and facilitate repair or maintenance work, particularly tire changes. Originally designed for trucks, wheel grabs are not readily compatible with the dimensions of agricultural vehicles, construction equipment, and / or specialized vehicles such as Humvees.

[0003] Fig. Figure 1 shows an agricultural tractor lifted by such a lifting device, the lifting device comprising a base frame placed on the ground or workshop floor. With such tractors, especially narrow-track tractors, the problem previously was that the subsequent recording situation was not possible because the arms of the base frame collided with the wider tires.

[0004] Given these limitations, accessory and adapter solutions are offered, particularly for agricultural applications, which can be attached to existing wheel grippers. These additional components allow certain tractors to be lifted, provided their dimensions and tire geometries fall within a range intended for the wheel gripper.

[0005] Despite available accessory solutions, limitations persist with standard lifting devices, making their use more difficult and complicated. While adapters allow some tractors to be lifted, this is only possible within specific wheel sizes and vehicle widths. Narrow-track tractors cannot be lifted safely because their unique wheel geometry is not universally supported. In particular, tractors with very large tire diameters cannot be gripped by the tire; the wheel grippers are either insufficient or unstable. This effectively prevents tire changes on many tractors, as neither standard grippers nor available accessories guarantee a secure hold on the wheels.

[0006] These limitations mean that workshops and businesses must either keep several different lifting systems on hand or resort to unsafe improvisations. Therefore, the purpose of this disclosure is to provide a universally adaptable lifting device that can flexibly and safely lift trucks and various other vehicles, especially agricultural machinery, trucks and / or construction equipment, including narrow-gauge and large-wheeled tractors, without requiring complex accessory installation, thus enabling tasks such as tire changes. Detailed description of the revelation

[0007] To solve the aforementioned problems, a lifting device for vehicles, in particular agricultural machinery, trucks and / or construction machinery, is proposed according to the attached claims, wherein the dependent claims relate to preferred embodiments of the proposed disclosure.

[0008] In particular, a lifting device for vehicles, especially agricultural machinery, trucks, and / or construction machinery, as described in this disclosure, preferably comprises at least one base frame with a mounting bracket for wheel forks and a lifting column. Thus, wheel forks can be arranged, for example, on the mounting bracket to accommodate the wheels of a vehicle. Preferably, the lifting device includes at least one lifting carriage that is slidable along the lifting column. This allows the vehicle to be lifted along the lifting column. The lifting can be effected, for example, by a motor, which can also be part of the lifting device and is preferably mounted in the area of ​​the lifting column. Furthermore, a control unit can also be mounted here, allowing the operation of the lifting device to be controlled by means of buttons, pushbuttons, etc., on the control unit.Alternatively or additionally, the control device can also include a remote control module, allowing it to receive wired or wireless control signals from a remote control. The remote control can also be a mobile computer / mobile phone or similar device running appropriate control software.

[0009] The lifting device preferably further comprises at least two support legs, wherein the support legs are removable and adjustable relative to the base frame and / or extension adapters. In contrast to conventional lifting devices with fixed support legs on the base frame, which can only accommodate certain wheel sizes, the adjustable support legs (arms) according to the present disclosure offer flexible adaptability. Preferably, the support legs (also referred to as "support feet") are adjustable on the base frame so that vehicles with different tire diameters and / or different track widths can be lifted. Preferably, two support legs are provided on the base frame, and these can, for example, be arranged closer together or further apart, particularly preferably with regard to their distance from each other.This allows suitable settings to be found for a wide variety of tire diameters or track widths, ensuring that the support feet do not come into unwanted contact with the tire or similar.

[0010] With regard to the aforementioned track widths, the present lifting device offers the possibility of adjustment such that the support legs are positioned relatively closer together and the vehicle is lifted at the wheel fork (e.g. tractor) or at the axle (see also Fig. 8), wherein the wheels are arranged inside the support feet and the wheel forks inside the wheels. It is also possible to use the lifting device in such a way that the wheels are gripped with the wheel grippers and the support feet are positioned even further apart laterally, as exemplified by the Fig. Figure 9 shows that, in the latter variant, a wider mounting bracket and additional extension adapters can preferably be used.

[0011] The support feet are mounted in such a way that the lateral distance between at least two feet can be adjusted. This allows for flexible support and lifting of different wheel sizes and / or track widths relative to the base frame by adjusting the feet. Adjusting the feet is simple, and re-adjusting the feet using the adjustable lateral distance between them is effortless. Since the feet are also removable, the base frame is easier to transport, and different feet of varying shapes and sizes can be used, further enhancing adaptability.

[0012] With the lifting device according to the present disclosure, the functionalities of wheel gripper forks and tire mounting devices can be integrated, and vehicles with different tire diameters and / or different track widths can be picked up and lifted, with adaptability being simple and flexible.

[0013] Furthermore, the base frame can have a hollow profile recess whose longitudinal axis is preferably aligned along a Y-axis of an imaginary three-dimensional coordinate system, provided the lifting column is aligned along a Z-axis of the imaginary three-dimensional coordinate system. The origin / zero point of the imaginary coordinate system can preferably lie on the longitudinal axis of the lifting column, so that the support arms, e.g., two of them, can each be located once on the positive Y-axis side and once on the negative Y-axis side.

[0014] Thus, the feet and / or extension adapters can be flexibly mounted along the Y-axis in the hollow profile receptacle; and adjustment of the feet or the lateral distance between the at least two feet is enabled. The lateral distance is preferably measured along the Y-axis, and the distance can be variable if the feet have sections that are at an angle other than 90° to each other, as shown in the example below.

[0015] Preferably, each support leg comprises essentially two longitudinal sections arranged at a fixed angle to each other, in particular greater than 90° (or not much less than 90°, e.g., 80°) and less than 180°, wherein one longitudinal section is an insertion section and the other is a support section. Preferably, the hollow profile receptacle includes a receiving opening at each of its longitudinal axis ends, into which an insertion section of a support leg can be inserted and slidably mounted along the Y-axis. This can be done quickly and without significant effort. Alternatively, the insertion sections of the support legs can also be inserted into a longitudinal adapter described below, which can then, in turn, be inserted into the hollow profile receptacle.

[0016] In particular, the insertion section of a support leg also serves to connect it to the base frame and / or an extension section. This allows the support leg to be securely positioned on a suitable location on the workshop floor or other surface. The preferably fixed angle between the insertion section and the support section is specifically designed to accommodate different tire sizes and / or track widths. The larger the angle, the more clearance is available for larger tires (e.g., to compensate for uneven tire / wheel sizes) or track widths.

[0017] In one variant, the angle can also be designed to be adjustable if a joint is provided between the insertion section and the support section, which, regardless of the presence of the joint function, can particularly preferably be designed to be lockable, e.g. by means of a perforated disc and a locking / pinning pin, wherein the perforated disc can offer different angular positions for the joint.

[0018] The lifting column is preferably positioned at a center point on the Y-axis, allowing a support leg and / or wheel fork to be positioned on one side / end of the Y-axis and the other support leg and / or wheel fork to be positioned on the other side / end of the Y-axis. This increases the stability of the lifting device, especially when lifting a vehicle.

[0019] Furthermore, the base frame can include the hollow profile holder, the longitudinal axis of which is preferably aligned along a Y-axis of an imaginary three-dimensional coordinate system. Preferably, the hollow profile holder can have at least one receiving opening at each of its longitudinal axis ends, which are positioned further outwards in both directions of the Y-axis than a longitudinal end of the holder carrier. This configuration ensures that the wheel forks mounted on the holder carrier are positioned within the feet or their support sections.

[0020] In other words, the mounting bracket has a narrower width along the Y-axis than the lateral distance between the at least two support feet. Preferably, the lifting bracket or the wheel forks arranged on the mounting bracket are mounted within the area defined by the two support feet (operating area). Thus, when connected to the base frame, the two support feet can assist the lifting device, allowing the vehicle to be lifted by the wheel forks along the Z-axis within the area defined by the support feet without the tires contacting the support feet.

[0021] Furthermore, the insertion section of the base can have detent positions. Preferably, the hollow profile receptacle can also have detent elements, in particular bores for receiving a locking or plug pin or a comparable locking device. The connection of the insertion section of the base to the base frame via the hollow profile receptacle can also be implemented by other locking and positioning options, e.g., by screwing or pinning using, for example, bolts, dowel pins, dowel pins, etc. The detent positions can be distributed along the Y-axis on the insertion section of the base, so that by holding the detent element in a detent position closer to the lifting column, a greater distance between the bases is achieved. This variant enables a secure hold with easy adjustability and handling.

[0022] Alternatively or in addition to the locking positions, connecting elements can also be provided with which the two parts can be connected to each other.

[0023] Furthermore, one or more extension adapters can be provided between the hollow profile mount and each support leg. This can be used to further increase the lateral (Y-direction) distance between the support legs, which is particularly helpful with larger tire diameters to ensure optimal lifting at the wheels.

[0024] Furthermore, the receiving opening and the insertion section and / or the adapter insertion section of an extension section can have cross-sectional shapes that are coordinated in such a way that the insertion section / adapter insertion section is held / supported in the hollow profile receptacle in a rotationally secure manner when inserted into the hollow profile receptacle. This results in an inherently secure position without the need for additional aids or devices. For example, the cross-section of the insertion section / adapter insertion section can have a trapezoidal shape. However, the cross-sectional shapes can also include other forms, such as other non-circular profiles (e.g., square, hexagonal, D-profile, polygonal profile, U-profile, open profiles, keyed hub, etc.).The clearance between the outer surface of the insertion section / adapter insertion section and the inner surface of the hollow profile receptacle is selected such that insertion is smooth without the insertion section slipping out of the hollow profile receptacle too easily. Clearance fits are preferred here, e.g., those with minimal play that can be moved by hand; fits where the parts move without noticeable play; fits where the parts can just barely be moved by hand. Slight transition fits can also be used, such as those where the parts can be moved with light taps or by hand.

[0025] Furthermore, the mounting bracket can be configured such that at least two wheel forks can be detachably (and) attached to it. Preferably, the mounting bracket can be interchangeably mounted on the lifting device (e.g., by bolting), allowing mounting brackets of different widths to be arranged on the lifting carriage. This enables the lateral distance between, for example, two wheel forks to be adjusted very flexibly. This flexibility and adjustability can also be enhanced by allowing the mounting bracket and / or the wheel forks to be interchangeable to accommodate different tire diameters / track widths. "Attachable" here specifically means that the wheel forks are attached to the mounting bracket by the process of hooking them in (removable), which, among other things,This can involve attaching the wheel forks to a point or bracket to hold them in a specific vertical position (relative to the mounting bracket). This can be achieved, for example, by inserting, folding, or placing a section of the wheel fork into, around, or onto the mounting bracket (e.g., a hook section, a bracket section, or similar part of the wheel fork), with the mounting bracket section bearing the weight of the wheel fork and preventing it from falling to the ground. Attachment can be done very quickly and without tools.

[0026] Particularly advantageous is the option for another section of a wheel fork, besides the section for attachment, to also be in contact with the mounting bracket, for example to prevent rotation. This further increases process reliability.

[0027] Furthermore, the mounting bracket can be arranged in a plate-like form with a plane along a YZ plane of the imaginary three-dimensional coordinate system, preferably with an upper edge of the mounting bracket designed for attaching the wheel forks. The upper edge is arranged along the Z-axis and preferably extends along the Y-axis. The removable design of the wheel forks facilitates the adjustment of different lateral distances between the forks, which are preferably arranged at two ends of the upper edge, quickly and without additional tools.

[0028] Furthermore, the upper edge of the mounting carrier can be designed for attaching the wheel forks; and preferably has stop elements at both ends of the upper edge, wherein the stop elements are preferably projections (load lugs).

[0029] To securely attach the wheel forks to both sides of the mounting bracket in the Y direction, it may be advantageous to arrange the stop elements at both ends of the upper edge of the mounting bracket.

[0030] Furthermore, the base frame can be raised using trestle elements that can be inserted into trestle mounts. These trestle elements can be wedge-shaped components that fit into the trestle mounts, allowing the entire lifting device to be raised. This can be particularly useful for exchanging adapters, support feet, etc. Brief description of the characters Fig. Figure 1 shows a prior art lifting device with fixed arms on the base frame, wherein the lifting device lifts a vehicle; Fig. 2: shows a lifting device according to the present disclosure in an assembled state; Fig. Figure 3 shows a lifting device according to the present disclosure in a partially disassembled state; Fig. Figure 4 shows a lifting device according to the present disclosure in an adjusted state compared to Fig. 2, wherein the relative distance between a wheel fork and a support leg is adjusted; Fig. Figure 5 shows another example with a lifting device according to the present disclosure in an adjusted state compared to the Fig. 2 and Fig. 3, wherein the relative distance between a wheel fork and a support leg is adjusted; Fig. Figure 6 shows a lifting device according to the present disclosure with an alternative embodiment of the wheel forks compared to the Fig. 4 and Fig. 5; Fig. 7: shows a lifting device according to the present disclosure in a state in which a vehicle axle is received by means of the wheel forks and the wheels / tires are arranged between the support feet; Fig. Figure 8 shows a partial exploded view of the lifting device according to the present disclosure, wherein a wider receiving support is mounted than in the previous figures (here in exploded view) and extension adapters are provided between the support feet and the hollow profile receiver (these are also shown in exploded view); Fig. 9: shows a lifting device according to the present disclosure in a state in which a vehicle wheel / tire is received by means of the wheel forks and arranged between the support feet; Fig. Figure 10 shows a section of the lifting device according to the present disclosure in a state in which bracket elements are shown exploded / unassembled, which can be inserted into the corresponding receptacles; Detailed description

[0031] The following section describes examples of the present revelation in detail using illustrative figures. The features can be combined in whole or in part, and the present revelation is not limited to the examples described.

[0032] Fig. Figure 1 shows a prior art example, which was explained in the introduction.

[0033] Fig. Figure 2 shows, to illustrate the functioning of the present disclosure, an exemplary representation of a lifting device 30 with flexibly adaptable support feet 35a, 35b and / or wheel forks 33a, 33b, which is designed to accommodate different tire diameters and / or different track widths.

[0034] The lifting device 30 of the Fig. 2 according to the present disclosure makes it possible to integrate the functions of adjustability and adaptability on the base frame with regard to different tire diameters and / or different track widths, so that with such a lifting device 30 different tire diameters and / or different track widths can be accommodated, with only minor adjustments being necessary. Fig. Figure 2 shows in particular an assembled state of the lifting device 30.

[0035] Furthermore, the Fig. 2 in thick dashed lines an imaginary / virtual coordinate system in three coordinates, wherein the Z-axis is preferably arranged along the lifting column 34 (or at least parallel to it).

[0036] The lifting device 30 of the Fig. 2 comprises a base frame 31, which can preferably be arranged along the Y-axis. The base frame 31 can also hold the lifting column 34, which can be securely implemented, for example, by bolting or welding. The lifting column 34 can be implemented or used in various ways, as is common and known in the prior art. Here, a spindle system is shown schematically, wherein a motor 37 can be connected to the lifting column 34 at an upper end (i.e., in the positive direction of the Z-axis), as is customary in the art.

[0037] The motor 37 can furthermore be connected, particularly via signaling (for the exchange of control signals, etc.), to a control unit 38, which may include pushbuttons, buttons, knobs, display(s), or other control-related, operator-related, and / or display-related units, so that an operator can operate the lifting device 30, e.g., enter control commands, receive information about the status of the lifting device 30, receive warnings, etc. Furthermore, a hand lever 39 with a handle can be provided, which can be used for lifting and, as is known in the trade, also includes the provision of a corresponding joint 39a. Lifting and moving the lifting device 30 can also be simplified by wheels 39b, which can also preferably be mounted on the base frame 31.

[0038] A lifting carriage 36 is mounted on the lifting column 34 in the usual manner and is preferably moved along the Z-axis by a motor. The lifting carriage 36 can preferably hold a mounting bracket 32 ​​in a detachable manner, e.g. by means of screws or a positive-locking connection. The mounting bracket 32, as Fig. Figure 2 shows that the receiving carrier 32 can preferably be plate-shaped and, for example, have a rectangular shape and is particularly preferably aligned along the YZ plane. This receiving carrier 32 is used in connection with Fig. 3 explained in more detail.

[0039] It is evident from Fig. 2 already includes a function of the receiving carrier 32, which, for example, holds two wheel forks 33a, 33b suspended from its upper edge 32a. Preferably, the lifting device 30 comprises at least two support feet 35a, 35b, wherein the support feet 35a, 35b are removable and adjustable relative to the base frame 31. The support feet 35a, 35b can also have small rollers 35c at one (free) end to make the lifting device 30 even more mobile. The aspect regarding the support feet 35a, 35b will be further clarified in the following figures and examples.

[0040] Visible and noteworthy is the Fig. 2 already shows that the support feet 35a, 35b are arranged outside the Y-axis positions of the wheel forks (also referred to as wheel gripper elements or support arms) 33a, 33b (i.e., they are located further outwards in both directions of the Y-axis, positive and negative, i.e., they have higher values ​​of the Y-axis position than the wheel forks). The receiving carrier 32 is also less wide (in the Y-axis) than the minimum Y-positions of the support feet 35a, 35b.

[0041] Fig. Figure 3 shows in particular a lifting device 30 according to the Fig. 2 in a state where the removable support feet 35a, 35b are not mounted. This allows for easier movement / transport of the lifting device 30, while also improving the visibility of details for the description. The coordinate system of the Fig. 2 is in Fig. Figure 3 and subsequent figures are no longer shown, but should also be considered. Similarly, identical units / components with the same reference symbols are not consistently marked with reference symbols in subsequent figures to improve readability.

[0042] To accommodate different tire diameters and / or track widths, the base frame 31 can preferably have a hollow profile receptacle 40, as shown in the Fig. Figure 3 shows this. This can, for example, be a hollow profile or a partial profile welded or bolted to the base frame 31. The cross-section of this hollow profile receptacle 40 is preferably formed in the XZ plane. It can be particularly advantageous if the cross-section has a shape that allows for a rotationally secure receptacle for the feet 35a, 35b (with a corresponding cross-sectional shape of the feet). Here, an approximately trapezoidal cross-sectional shape is shown purely as an example. The hollow profile of the hollow profile receptacle 40 is open in both directions of the Y-axis, i.e., it has a receiving opening 40a on both sides. The counterparts of the feet 35a, 35b can be inserted or slid into these openings.

[0043] Fig. Figure 3 further shows that the feet 35a, 35b can also have different shapes. For example, the Fig. 3 each have a left-hand support leg 35b (the following applies analogously to support leg 35a), which has an insertion section 35b1 having an outer surface / circumference to allow insertion into the receiving section / hollow profile receptacle 40 with a selected fit. Preferred insertion holes 35b1a are also shown here, which can enable detent positions. A support section 35b2 adjoins the insertion section 35b1, which is shown here at a right angle, although angles greater than 90° (or not much less than 90°) are also preferable. The maximum angle of greater than 90° is where stability is no longer guaranteed, so the maximum angle should be less than 180°. The support legs 35a, 35b are preferably made from a single piece and, for example, with a partial hollow profile to keep the weight low while maintaining a high area moment of inertia. The wheels 35c are in the Fig. 3 omitted. The variant of the stand 35b in Fig. 3 has a section 35b11 between the insertion section 35b1 and the standing section 35b2, which has a diameter or circumference that is larger than that of the insertion section 35b1, so that a defined stop for the maximum insertion position can be provided here and at the same time the distance in the Y-axis can be further increased.

[0044] Thus, with the lifting device 30 according to the present disclosure, vehicles with different tire diameters and / or track widths can be lifted without the tires contacting the support feet 35a, 35b, since the support feet 35a, 35b can flexibly and adaptably provide different distances. Here, it should also be noted again that Fig. Figure 2 shows a lateral distance d1 along the Y-axis formed between the two mounted feet 35a, 35b. This distance d1 is adjustable by the flexible, adaptable connection between the base frame 31 and the feet 35a, 35b.

[0045] As in the Fig. 2 and Fig. As shown in Figure 3, the insertion section 35b1 can preferably have several detent positions 35b1, wherein the base frame 31 or the hollow profile receptacle 40 also has detent positions, e.g. through holes 40b or flexible detent pins 40c ( Fig. 4), so that a locking pin or the like (not shown) can effect a fixation. Preferably, the detent positions 35b1 can be distributed along the Y-axis on the insertion section 35b1, so that different distances d1 can be formed by holding the detent element in different detent positions.

[0046] Fig. Figure 3 further shows that the lifting device 30 comprises at least one lifting carriage 36, which is displaceable along the lifting column 34 and, by way of example, encompasses the lifting column 34. A receiving recess 36a can be provided in a forward region of the lifting carriage 36 in the positive X-direction, into which the receiving carrier 32 can be inserted and held by positive locking (and / or frictional locking). The receiving carrier 32 is plate-shaped, as described above, particularly in a front section, while a rear section 32b is preferably provided integrally or attached to the plate-shaped section, which can contribute to further stiffening of the receiving carrier 32 and, in particular, can serve as a mating element for the receiving recess 36a in the case of a positive locking connection with the lifting carriage 36.However, it should be clearly mentioned that the mounting carrier 32 can also consist exclusively of the plate-shaped section and can, for example, be screwed or welded flat to the lifting carriage 36.

[0047] It is particularly advantageous if the mounting carrier 32 is detachably arranged on the lifting carriage 36. The detachability of the mounting carrier 32 allows mounting carriers 32 of different widths (along the Y-axis) to be interchangeably arranged on the lifting carriage 36. Thus, the wheel forks 33a, 33b arranged on the upper edge 32a of the mounting carrier 32 can assume different lateral distances (this shows Fig. 8 with a wider mounting bracket 32'). Fig. Figure 2 shows, for example, a distance d2 between the wheel forks 33a, 33b. It is particularly advantageous if the wheel forks 33a, 33b can be detachably attached to the mounting bracket 32. Thus, various lateral distances d2 can be flexibly adjusted by means of the detachable mounting bracket 32 ​​and the detachably attached wheel forks 33a, 33b, whereby the distance d2 can be adapted to different tire diameters. Furthermore, it can be advantageous if the mounting bracket 32 ​​has at least two stop elements (e.g., protruding lugs) 321a on its upper edge 32a, so that the wheel forks 33a, 33b can be arranged in a slip-resistant manner.

[0048] The lateral distance d2 between the mounted wheel forks 33a, 33b, as in Fig. The distance d1 shown in Figure 2 is smaller than the lateral distance d1 between the mounted support feet 35a, 35b. Therefore, the vehicle can be lifted within the area defined by the mounted support feet 35a, 35b (operating range) without the tires contacting the support feet 35a, 35b. The distance d3 between a support foot 35a and a wheel fork 33a on the same side of the lifting device 30 can also be adjusted. The lifting column 34 preferably forms a center point along the Y-axis, thus defining two sides / ends from this center point, with one of the two support feet 35a, 35b and one of the two wheel forks 33a, 33b positioned on each side / end.

[0049] The differential distance d3 can be adjusted by adjusting the feet 35a, 35b and / or the wheel forks 33a, 33b. Alternatively or additionally, the distance can also be adjusted using additional extension adapters 50, as shown in Fig. Figure 8 shows that the wheel forks can be modified. The wheel forks 33a, 33b can preferably engage in optional toothing on a lower edge 32c to further increase the sliding resistance. Possible toothing positions 32d are shown in Fig. 3 shown in both directions of the Y-axis (the reference symbol is only placed on those in the negative Y-direction due to space constraints).

[0050] Furthermore, optional boreholes 32e (see below) are available. Fig. 5) arranged in a central area of ​​the mounting bracket 32 ​​(its front surface), which can serve to mount further possible adapters, if necessary, by means of screw connections. The mounting bracket 32 ​​can also be detached from the lifting device 30 at this point by means of the screw connections and replaced by an alternative version, such as a wider mounting bracket 32', which is in Fig. Figure 8 shows that a wider support bracket 32' allows for the lifting of very large tires / large tire diameters when these are to be lifted by the wheels / tires, as shown. Fig. Figure 9 shows - instead of lifting at the wheel fork / axle, how this Fig. Figure 7 shows that the lifting device 30 is therefore very flexible and adaptable to various lifting scenarios and sizes of wheel diameters and / or track widths.

[0051] Fig. Figure 4 shows an example where the distance d3 is small (and therefore not shown), so that the wheel forks 33a, 33b are arranged almost directly against the support feet 35a, 35b. Furthermore, an optional wheel / tire holder 110 is shown here by way of example and purely schematically, and not in accordance with actual dimensions. This holder can prevent a tire resting on the wheel forks 33a, 33b from falling over, for example, when a tire / wheel change is being carried out. The wheel / tire holder 110 is preferably dimensioned such that a corresponding tire can be gripped with the front corner piece, with the other end preferably being insertable into a holder receptacle 111 and mountable with the lifting device 30.

[0052] Fig. Figure 5 then shows, for example, an example where the distance d3 is greater than in the Fig. 4 and smaller than in the Fig. 2 is.

[0053] Fig. Figure 6 shows an advantageous alternative for the design of the wheel forks 33a, 33b. In the Fig. 4 and Fig. 5 The surface of the wheel forks 33a, 33b is provided with roller-shaped projections 33_1 that enable the tire and / or its rolling motion. In comparison, the surface of the wheel forks 33a, 33b in the Fig. 6 plan. A decision between the different surfaces can be made depending on the tire and / or the weight of the vehicle.

[0054] Furthermore, one can use the Fig. 6. A possible shape of the wheel forks 33a, 33b can also be clearly seen. These preferably have a hook section 33a1 that partially encloses the upper edge 32a when hooked in place. This is preferably followed by a support section 33a1, which is arranged in the Z-axis direction and preferably lies flush with the front surface of the mounting carrier 32 to prevent the wheel fork 33a, 33b from rotating. At the end of the support section 33a1 (opposite the hook section 33a1), one (or more) rear lugs 33a3 (pointing in the negative X-direction) can be provided, which engage in the toothing 32d ( Fig. 3) can intervene to further secure against slippage. The receiving section 33a4, which is intended to receive the wheels, then connects to the support section 33a1 in the positive X direction and preferably at a right angle to the support section 33a1.

[0055] Fig. Figure 7 shows an application example of the lifting device 30, in which the vehicle (not fully shown) can be picked up / lifted at its wheel axle / wheel fork 81 by means of the wheel forks 33a, 33b. The small distance between the tires / wheels 80a, 80b shown of the vehicle indicates that a narrow-gauge vehicle is being lifted and how the lifting device 30 can be flexibly adjusted for this purpose. Thus, the distances d3 (cf. Fig. 2) chosen to be just large enough that the tires / wheels 80a, 80b are positioned between the support feet 35a, 35b (the figure appears to show contact, but this is preferably avoided by adjusting d3 accordingly). The wheel forks 33a, 33b and their distance from each other d2 (cf. Fig. 2) is adjusted so that the axle can be safely lifted and so that the wheel forks 33a, 33b are not obstructed by the wheels 80a, 80b.

[0056] Fig. Figure 8 shows an alternative where a wider 32' mounting bracket is installed. This is particularly helpful when larger tire diameters need to be lifted, and preferably when the tire itself needs to be lifted, as in the variant / application example shown in Figure 8. Fig. Figure 8 shows that if the feet or their insertion sections 35b1 are not to be too long, a variation can also be provided, which is also shown in the exploded view in Fig. Figure 8 shows that extension adapters 50 can each be provided between the hollow profile receptacle 40 / base frame 31 and the support foot 35a, 35b, each of which also has an adapter insertion section 51 and an adapter receptacle section 52. In the example shown here, the Fig. In section 8, the adapter insertion section 51 and the adapter receiving section 52 are each square with a smaller circumference than their counterparts, preferably also incorporating a positive locking mechanism to prevent rotation. The extension adapters 50 are preferably hollow profiles, so that in particular the adapter receiving section 52 can be a correspondingly shaped opening in an end section of the extension adapter 50.

[0057] Furthermore, the Fig. 8 Another alternative or additional option is to connect the components, in particular the hollow profile holder 40, the extension adapters 50 and / or the support feet, to one another (detachably). The possibility of plug-in pins and detent positions has been shown in the preceding figures; in Fig. 8 shows the possibility of using connecting elements 100, e.g. in the form of corner profiles, which connect two components together by means of a screw connection.

[0058] As discussed several times already, the Fig. 9 an application example where, among other things, large tire diameters of a wheel 80a can be lifted directly at the tire / wheel 80a.

[0059] Furthermore, in Fig. 10 A section of the lifting device 30 is shown from a rear perspective to clearly demonstrate the aspect of the support brackets 60. One of these elements, which can be part of the base frame 31, as shown in Fig. 10 shown, is in Fig. 10 is visible (on the side of the support foot 35b), while a preferably further (second) trestle mount is concealed by the central structure in perspective, but is preferably symmetrical to the center and identical in shape to the visible one. As can be seen here, the trestle mount(s) 60 are hollow profiles, which particularly preferably have openings along the X-axis ( Fig. 2) and are formally and dimensionally configured so that standard-sized forklift forks can be inserted here, enabling the lifting device 30 to be transported easily and safely using a forklift. Furthermore, the Fig. 10 also show support elements 70 which can be inserted into the openings of the support mounts 60 with the shown engagement pins 71, so that lifting the lifting device 30 can be facilitated.

[0060] The lifting device 30 according to the present application is characterized, among other things, by its high flexibility and can be adapted to different applications and working conditions without significant effort. It enables the safe and efficient lifting of vehicles, even those with large tires and / or different track widths, particularly narrow-track tractors. After use, any previously possible restriction of maneuverability can be avoided by replacing the arms and / or forks. Furthermore, the optimized component geometry ensures that previously cumbersome narrow arms no longer obstruct the working area.

Claims

[1] Lifting device for vehicles, in particular agricultural machinery, trucks and / or construction machinery, comprising: at least a basic frame (31) with a mounting carrier (32) for wheel forks (33a, 33b) and a lifting column (34); at least two support feet (35a, 35b), wherein the support feet are removable and adjustable with respect to their relative position to the base frame (31); and at least one lifting carriage (36) which is movable along the lifting column (34), wherein the feet (35a, 35b) are mounted in such a way as to allow for adjustment of the lateral distance (d1) between the at least two feet (35a, 35b). [2] Lifting device according to claim 1, characterized by, that the base frame (31) further comprises a hollow profile receptacle (40) whose longitudinal axis is preferably aligned along a Y-axis of an imaginary three-dimensional coordinate system, when the lifting column (34) is aligned along a Z-axis of the imaginary three-dimensional coordinate system, Each support leg (35a, 35b) has essentially two longitudinal sections arranged at a fixed angle to each other, in particular greater than 90° and less than 180°, wherein one longitudinal section is an insertion section (35b1) and one longitudinal section is a support section (35b2), and The hollow profile receptacle (40) has a receiving opening (40a) at each of its longitudinal axis ends, into which an insertion section (35b1) of a support foot can be inserted and slidably mounted along the Y-axis. [3] Lifting device according to one of the preceding claims, characterized by, that the base frame (31) further comprises a hollow profile receptacle (40) whose longitudinal axis is preferably aligned along a Y-axis of an imaginary three-dimensional coordinate system, and the hollow profile receptacle (40) has at least one receiving opening (40a) at each of its longitudinal axis ends, which are arranged further outside in both directions of the Y-axis than a longitudinal end of the receiving carrier (32). [4] Lifting device according to one of the preceding claims, characterized by , that the insertion section (35b1) of the base has detent positions (35b1a), and preferably the hollow profile receptacle (40) has detent elements, in particular bores for receiving a plug pin. [5] Lifting device according to one of the preceding claims, characterized by , that an extension adapter (50) is provided between the hollow profile holder (40) and a base (35a, 35b). [6] Lifting device according to one of the preceding claims, characterized by , that the receiving opening (40) and the insertion section (35b1) have cross-sectional shapes that are coordinated in such a way that the insertion section (35b1) of a stand (35a, 35b) or an adapter insertion section (51) of an extension adapter (50) can be arranged in the hollow profile receiving (40) in a rotationally secure manner. [7] Lifting device according to one of the preceding claims, characterized by , that the mounting carrier (32) is configured such that at least two wheel forks (33a, 33b) can be detachably attached to the mounting carrier. [8] Lifting device according to one of the preceding claims, characterized by , that the receiving carrier (32) is detachably connected to the lifting device (30), preferably to mount receiving carriers (32, 32') of different widths. [9] Lifting device according to one of the preceding claims, characterized by, that the receiving carrier (32) is arranged in a plate-like manner with a plane along a YZ plane of the imagined three-dimensional coordinate system, wherein preferably an upper edge (32a) of the receiving carrier is provided for hooking the wheel forks (33a, 33b). [10] Lifting device according to one of the preceding claims, characterized by , that the receiving carrier (32) is arranged in a plate-like manner with a plane along a YZ plane of the imagined three-dimensional coordinate system, wherein an upper edge (32a) of the receiving carrier is provided for hooking the wheel forks (33a, 33b) and has stop elements (32a1) at both ends of the upper edge (32a), wherein the stop elements (32a1) are preferably projections. [11] Lifting device according to one of the preceding claims, characterized by , that the base frame (31) can be raised by means of trestle elements (70) that can be inserted into trestle mounts (60).

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