Assembly comprising a workbench and a mobile platform

Abstract

The present disclosure concerns an assembly comprising a mobile platform (1) and a workbench (2) fastenable on top of the mobile platform (1), - the mobile platform (1) being suited for driving the assembly and comprising: o a frame (4) suited for supporting the workbench (2) and, - the workbench (2) comprising: ∘ a structure (20) configured to rest on the frame (4), ∘ a work surface (21) formed on top of the workbench structure (20), ∘ a storage unit (22), the assembly further comprising a removable fastening mechanism (6) suited to cooperate with the frame (4) and the structure (20), and being able to adopt a locked position in which the workbench (2) is fastened onto the mobile platform (1) and an unlocked position in which the workbench (2) is released from the mobile platform (1).

Description

Technical Field

[0001] The present disclosure relates to the field of construction equipment.Background Art

[0002] Workers are often required to perform their tasks in challenging conditions, characterized by uneven terrain and cluttered environments.

[0003] To access tools and portable machinery, they typically arrive at the construction site in a utility vehicle where their equipment is stored. However, these vehicles are generally not designed for navigating rough or obstructed terrain, forcing workers to park some distance away from their actual work location.

[0004] As a result, workers must carry their equipment from the vehicle to the worksite, relying only on the gear they can manage to transport. This frequently necessitates multiple trips back and forth to retrieve additional tools or supplies.

[0005] The effort of carrying heavy equipment over long distances significantly impacts the workers' overall safety and efficiency on the construction site.

[0006] The present disclosure aims at improving the situation.Summary

[0007] The present disclosure relates to an assembly comprising a mobile platform and a workbench fastenable on top of the mobile platform, the mobile platform being suited for driving the assembly and comprising, in particular: ∘ two pairs of wheels, ∘ a power storage device, ∘ a motor powered by the power storage device, the motor being suited to drive at least one of the pairs of wheels, ∘ a frame comprising a top surface, preferably extending above the pairs of wheels, and suited for supporting the workbench and the workbench comprising: ∘ a structure configured to rest on the top surface of the frame, ∘ a work surface formed on top of the workbench structure, ∘ a storage unit, in particular featuring a volume suited for storing gear, the assembly further comprising a removable fastening mechanism suited to cooperate with the frame of the mobile platform and with the structure of the workbench, the removable fastening mechanism being able to adopt a locked position in which the workbench is fastened onto the mobile platform and an unlocked position in which the workbench rests on the top surface of the frame and is free to be removed from the mobile platform.

[0008] Thanks to an assembly according to the present disclosure, there are no more scattered tools lying around causing frustration or accidents. The work is thus more efficient, and safety is improved. Moreover, thanks to the workbench, all essential tools are stored and driven by the mobile platform, ensuring that nothing is left behind at the warehouse or at the utility vehicle.

[0009] The assembly further allows the worker to keep all the equipment within reach and reduces the need for time-consuming trips back and forth to the place where equipment is stored. Time loss is minimized, and efficiency is greatly improved.

[0010] The assembly, comprising a removable fastening mechanism, can easily be disassembled in such a way that the workbench can be dropped at a specific location, and the mobile platform can perform another task.

[0011] The features set out in the following paragraphs can optionally be implemented, independently of one another or in combination with one another:

[0012] According to an example, the removable fastening mechanism is directly accessible from a side of the assembly. In this manner, it is easy for an operator to lock and / or unlock the workbench when needed. In particular, the removable fastening mechanism is accessible without requiring removal of any other parts from the assembly.

[0013] According to an example, the frame comprises a first wall extending vertically and forming a blocking surface extending substantially perpendicular to a transversal direction Y of the frame, the structure comprising a second wall extending vertically and facing the blocking surface, the fastening mechanism comprises a removable fastening organ suited to bring the second wall of the structure in contact with the blocking surface of the first wall when the removable fastening mechanism is in the locked position. In this advantageous example, the blocking surface acts as a natural centering surface and as a stop surface so as to block any lateral movement of the workbench and provide balance to the assembly.

[0014] According to an example, the assembly comprises an intermediate fixation plate, distinct from the workbench and the mobile platform, the intermediate fixation plate comprising a stop surface for fixation to the structure of the workbench and comprising the second wall extending vertically and facing the blocking surface of the first wall of the mobile platform.

[0015] According to an example, the workbench comprises four height-adjustable legs each comprising a first static part and a second mobile part configured to move relative to the first static part and to rest on the ground, each height-adjustable leg being configured to allow the mobile second part to move from a retracted position to an elongated position in order to lift the workbench above the frame of the mobile platform, when the removable fastening mechanism is in the unlocked position.

[0016] According to an example, the four height adjustable legs are disposed two-by-two laterally on both lateral sides of the workbench, and a minimal distance separating two laterally opposite height adjustable legs 8, when projected on a transverse plane, is at least superior to an overall width of the mobile platform 1.

[0017] According to an example, the pairs of wheels are disposed in such a way that they are confined below and within an overall width of the workbench.

[0018] According to an example, the power storage device is located below the frame at a center region between both the front side and the rear side of the frame.

[0019] The present disclosure further concerns a method for transporting work equipment comprising the use of an assembly as described above.

[0020] According to an example, the method, comprises: furnishing a mobile platform, mounting a workbench on top of the mobile platform by cooperation of the structure with the top surface of the frame, locking the workbench and the mobile platform by putting the removable fastening mechanism in the locked position, remotely guiding the mobile platform to drive the workbench to a desired location.

[0021] According to an example, wherein the workbench comprises height adjustable legs, the method further comprises, after remotely guiding the mobile platform to drive the workbench to a desired location, unlocking of the workbench from the mobile platform by putting the removable fastening device in the unlocked position, adjusting the height of at least one adjustable leg to lift the workbench above the top surface of the frame of the mobile platform. Brief Description of Drawings

[0022] Other features, details and advantages will be shown in the following detailed description and on the figures, on which: Fig. 1 shows a perspective view of an example of an assembly according to the present disclosure, Fig. 2 shows a perspective view of an example of a mobile platform without the workbench, Fig. 3 shows a side view of a mobile platform according to an example, Fig. 4 shows a top view of a specific example wherein the mobile platform comprises two steered wheel axles, Fig. 5 shows a front view of a mobile platform according to an example, wherein the wheels are set straight, Fig. 7 shows a front view of the assembly according to an example wherein the wheels are turned, Fig. 8 shows a perspective view of an assembly according to an example wherein the workbench comprises a work surface and a storage unit, Fig. 9 shows a front view of the assembly wherein an example of removable fastening mechanism is particularly visible, Fig. 10 shows a section of the removable fastening mechanism according to an example, Fig. 11 shows a front view of the assembly according to an example wherein the workbench comprises height adjustable legs, shown here in a retracted position, Fig. 12 shows a front view of the assembly according to the example of figure 11 wherein the height adjustable legs are in an elongated position, Fig. 13 shows a front view of the assembly according to the example of figure 11 wherein the assembly is stopped on a slight slope and the height adjustable legs are each elongated of a different length for horizontalization of the workbench, Fig. 14 shows a perspective view of the assembly in use according to an example, wherein the height adjustable legs are elongated to lift the workbench in order to allow moving of the mobile platform, Description of Embodiments

[0023] Figure 1 shows an assembly according to an example of the present disclosure. The assembly comprises a mobile platform 1 and a workbench 2. In this case, the workbench is mounted on top of the mobile platform 1.

[0024] In general, a particular advantage and purpose of an assembly according to the present disclosure is to render the workbench 2 drivable to a precise location, especially on construction sites.

[0025] The workbench 2 typically comprises at least one storage unit 22 suited for the storage of tools or equipment of various types. The assembly finds particular usefulness for transporting equipment to a specific location, in particular a location that is difficult or unpractical to reach with conventional utility vehicle.

[0026] To this end, the mobile platform is advantageously remotely driven, using for instance a remote-control device that is able to transmit instructions, preferably via a wireless connection, to an on-board printed circuit board comprising a receiver and a processor suited to control a motor for driving the mobile platform 1.

[0027] Figure 1 shows a forward direction V, corresponding to a direction towards which the mobile platform 1 is suited to move, along with the workbench 2 or not, in particular when the wheels 3 are set straight.

[0028] Figure 2 shows a more detailed example of the mobile platform 1. In this view, the workbench is not visible.

[0029] Typically, the mobile platform 1 comprises wheels 3 and a frame 4. In particular, it may be preferred for stability reasons, especially during turns, that the number of wheels 3 is even. For example, the mobile platform 1 comprises four, or six, or more wheels.

[0030] In this particular example, the mobile platform 1 comprises four wheels distributed in two pairs of wheels 3.

[0031] Each pair of wheels 3 may typically be mounted on a wheel axle 30. In this example, the mobile platform 1 comprises two wheel axles 30 each located at proximity respectively of a front side 11 and a rear side 12 of the mobile platform 1. If the mobile platform 1 comprises more than four wheels, additional wheel axles can be provided, for example located at mid distance between the two front and rear wheel axle.

[0032] In general, it is considered that a front side of the mobile platform 1 or the workbench 2 is the side that is presented first when moving forward along direction V. The rear side is located opposite to the front side.

[0033] In a preferred manner, the wheels are evenly distributed along the length of the frame 4.

[0034] In a preferred manner, the wheels are entirely confined underneath the frame 4.

[0035] According to the present disclosure, the frame 4 comprises a top surface 40, suited for receiving the workbench 2 on which it may rest, by the action of gravity.

[0036] In particular, the top surface 40 can be a flat and horizontal surface forming a plane extending above each pair of wheels. The top surface 40 can also be the reunion of several distinct surfaces, for example disposed above each wheel axle.

[0037] For the present description, an orthonormal reference frame X, Y, Z is considered. Unless specified otherwise, reference is made to a normal use case wherein the frame 4 is substantially horizontal and the wheels are set straight. In general, the Z direction is vertical, and the X, Y plane is horizontal. The X direction is thus here referred to as the longitudinal direction, and the Y direction is a transversal direction.

[0038] In general, sides of the frame 4 that mainly extend longitudinally are referred to as lateral sides. The sides of the frame 4 that mainly extend transversally are referred to as front and rear sides, in relation to the forward moving direction V.

[0039] In a general manner, unless specified otherwise, a tolerance margin of + / - 10% is applied when values are given in the present description.

[0040] Figure 3 shows a side view of the mobile platform 1. In this figure, a power compartment 5 is particularly visible. The power compartment 5 comprises a compartment body 51, for example made of sheet metal, in which are lodged a power storage system 53 (non-visible) and a motor 52.

[0041] The power storage system 53 may comprise a fuel tank, and / or a battery, and / or fuel cells.

[0042] The motor 52 can be an electric motor, or a thermal engine, or a

[0043] According to an example in which the power storage comprises a battery, the power compartment 5 comprises a power inlet 53 for charging the battery.

[0044] The power compartment 5 is typically fastened to the frame 4. For example, it is welded to the frame 4. In particular, it may be fixed to the frame 4 in such a way that it extends entirely below the frame 4.

[0045] According to this example, and in a preferred manner, the power compartment 5 is located about mid-distance between the two pairs of wheels 3. In this manner, the center of gravity of the power equipment 5 comprising the power storage system and the motor is advantageously located between the wheels of the mobile platform 1.

[0046] Figure 4 is a top view of the mobile platform according to an example. Again, the workbench 2 is not represented here.

[0047] In general, at least one of the wheel axles is steered. To this end, each steered wheel axle can comprise a pivot mechanism 31 suited to allow rotation of the wheel axle relative to the frame 4 of the mobile platform 1.

[0048] In a particular example, and as represented on figure 4, the mobile platform 1 comprises two wheel axles and both two wheel axles 30 are steered. In this manner, it is possible for the mobile platform to maneuver in a cluttered environment such as a construction site.

[0049] In a preferred example, the rear pair of wheels 3 is free-running, and the front pair of wheels 3 are steered and driven by the motor.

[0050] In an advantageous example, a differential is used for the steered pair of wheels.

[0051] In a particular example, the two wheel axles 30 are each rotatable around a vertical axis Z. In other words, each wheel axles is steered and is rotatable around a respective axis that is parallel to the vertical direction Z. In this case, it may be advantageous that each wheel axle 30 is rotatable of an angle ω Z ranging between -45° and +45°, advantageously between -60° and +60°, or even more advantageously between -90° and +90°. The more the maximum angle is close to + / -90° the more the center of rotation can be close to the center of the mobile platform 1 and the steering radius can be tight. This may be particularly advantageous in a cluttered environment such as a construction site.

[0052] Typically, when the steered pair of wheels 3 forme an angle ω Z = 0°, the moving direction is the forward direction V. When the angle ω Z ≠ 0°, the moving direction is the direction V', oriented by the same angle relative with the forward direction V.

[0053] It is now made reference to figure 5 and 6, each showing respectively a front view and a side view of the mobile platform, wherein the modular equipment is not visible, and the wheels are set straight. In other words, the wheel axles are oriented at an angle ω Z = 0°, as defined on figure 4.

[0054] On figure 5, the front view shows a particular example in which the wheels are confined in a width W w that is substantially equal to a width W f of the frame 4. In this case, the width W w of the wheels is inferior to 110% of the width W f of the frame 4. In this manner, the maximum overall width of the mobile platform is not or barely impacted by the wheels 3.

[0055] For precision, the width of the pair of wheels 3 is measured so as to represent the overall width of the pair of wheels 3 when they are set straight.

[0056] On figure 6, in the same manner, as a cumulative or alternative example, the side view shows a particular example in which the wheel 3 are confined in a length L w that is substantially equal to a width L f of the frame 4. In this case, the length of the wheels is inferior to 110% of the length L f of the frame 4. In the same way, the overall length of the mobile platform 1 is thus defined by the length of the frame 4.

[0057] In this case, and as the workbench 2 is typically larger than the frame 4, this particular feature ensures that even when turning the wheels, there is no part of the mobile platform 1 that protrudes out of the boundaries of the workbench 2. In other words, this ensures that in a normal use case, and even when turning, the overall maximum width dimension of the mobile platform 1 mounted with the workbench 2 is defined by the workbench 2 itself. This feature can be particularly useful when the assembly is in motion and operated by a user. The workbench 2 is indeed more easily visible than the mobile platform 1 beneath it, allowing the user to maneuver the assembly without needing to focus on any protruding elements of the mobile platform 1 that could be more difficult to see. Additionally, it may be beneficial to eliminate protruding parts that could pose a safety hazard during movement.

[0058] In an example, when the frame 4 is substantially horizontal and the wheels 3 are set straight, the wheels 3 are entirely confined in a volume Vo formed by a vertical projection of the workbench 2 towards the ground below. This advantageous feature is for example represented on figure 7.

[0059] In other words, a width Ww of the pair of wheels 3 is inferior to an overall width Wb of the workbench. Typically, and to avoid lateral protrusion of the wheels beyond the workbench when turning, the width Ww is typically inferior to the width Wb of the workbench by 10%, preferably by 20%.

[0060] These features greatly contribute to making the mobile platform 1 highly practical. Its reduced dimensions and the absence of protrusions make it easily transportable and safer to use. In particular, its portability for example in any utility vehicle ensures uninterrupted workflows even in unexpected situations.

[0061] Figure 8 shows a view of the assembly on which an example of a workbench 2 is particularly visible.

[0062] In examples, the workbench may be suited for storing tools and / or portable machines, for instance for construction operations.

[0063] The workbench may comprise a work surface 21, preferably comprising a flat portion, to provide support for user operations. Advantageously, the work surface extends at a height H ranging from 80cm to 110cm, preferably from 85cm to 100cm, for optimal ergonomics. The work surface 21 can extend across substantially the entire length and width of the workbench 2, or only on a portion of the dimensions of the workbench 2. Preferably, the work surface 21 extends at least near the surroundings of a middle region of the length of the workbench 2. In particular, the work surface typically features a length of at least 300mm and a width of at least 300mm.

[0064] The workbench may comprise a storage unit 22, comprising at least one closable volume for storage of any object a user may need on site. For example, the storage unit comprises a drawer 23.

[0065] In a preferred example, the volume provided by the storage unit 22 is accessible from a side of the workbench.

[0066] The workbench typically comprises a workbench structure 20, defining an inner volume of the workbench. In examples, the storage unit is lodged inside the inner volume defined by the workbench structure 20.

[0067] In examples, the workbench structure comprises a plurality of metallic beams of constant sections. The metallic beams are typically welded together to form a metallic framework.

[0068] In examples, the working surface 21 rests on top of the workbench structure.

[0069] The workbench may comprise a closable panel 24, suited for securing the inner volume inside the workbench. The closable panel 24 may comprise hinges 241 for rotatably connecting the closable panel 24 to the workbench structure 20.

[0070] The closable panel 24 may comprise a handle 242, for example formed by an opening in the closable panel 2, the opening being dimensioned to allow penetration of a hand, or at least of several fingers into the inner volume of the workbench structure 20 to seize the closable panel 24 and make it rotate around the hinges 241.

[0071] Advantageously, the handle 242 is directly accessible from a side of the workbench.

[0072] Optionally, the workbench 2 can comprise at least one outlet configured to power tools. Typically, the outlet may be powered by the power storage device 53. In this manner, an operator can use the assembly as an available source of energy for powering portable tools.

[0073] Moreover, the workbench advantageously features compact dimensions. For instance, a width of the workbench Wb can range from 700 to 1000mm, preferably the width of the workbench Wb is equal to 730mm. Moreover, a length of the workbench Lw can range from 1500 to 1700mm.

[0074] Figure 9 shows a front view of the mobile platform 1 with a workbench 2 mounted on top of it. The figure shows a particular example of a removable fastening mechanism 6 suited for fixation of the workbench 2 on top of the frame 4 of the mobile platform 1.

[0075] The removable fastening mechanism 6 is suited to adopt a locked position, in which the workbench is securely fastened to the mobile platform 1, and an unlocked position in which the workbench 2 is free to be released from the mobile platform 1.

[0076] In examples, the removable fastening mechanism 6 is suited to allow release of the workbench, when in the unlocked position, by means of a movement of the workbench along the vertical direction Z above the mobile platform.

[0077] In a preferred and advantageous example, and as represented on figure 9, the removable fastening mechanism 6 is directly accessible from a side of the mobile platform, for example from a lateral side of the mobile platform 1. For instance, the term "directly" accessible may be interpreted as meaning that there is no need for removal of any parts blocking the way from a side of the platform to the removable fastening organ 6 in order to lock and / or unlock it. For example, it is understood that a user, standing on the ground next to a side of the assembly can easily access the removable fastening mechanism 6 without removing any part from the assembly.

[0078] It is understood that having "access" to the removable fastening mechanism 6 means being able to operate it to put it in either its locked or unlocked position, with or without using a tool.

[0079] In examples, the removable fastening mechanism 6 of the assembly comprises a removable fastening organ 61 suited to cooperate with frame 4 of the mobile platform 1 and with the structure 20 of the workbench 2. The removable fastening organ 61 may typically be distinct from either the workbench 2 and the mobile platform 1.

[0080] In a particular example, the removable fastening organ 61 comprises a bolt, formed by a screw and a nut, which in some cases may be particularly simple and effective. However, in other examples, the removable fastening organ 61 can comprise any solution known to the skilled person such as a clamp, a screw cooperating with a threaded hole of either one of the frame 4 or the structure 20, ...

[0081] In an advantageous example, the removable fastening organ 61 is suited to stay in place on the frame 4 even when no modular equipment 2 is mounted on the mobile platform 1. In this case, the removable fastening mechanism 6 is always available for mounting of a workbench 2. For instance, if the removable fastening organ is a bolt, it can easily be mounted back on the frame 4 alone after release of the workbench 2 and remain available for fastening a workbench 2 back in position.

[0082] In examples, and as represented on figure 10, the removable fastening mechanism 6 may comprise a first vertical wall 41 configured to cooperate with a second vertical wall 25 of the workbench 2 under the action of the removable fastening organ 61 for fastening the workbench 2 to the frame 4.

[0083] In examples, the first wall 41 extends vertically and forms a blocking surface 44 extending substantially perpendicular to a transversal direction Y of the frame 4. In this case, the structure 20 comprises a second wall 25 extending vertically and facing the blocking surface 44. The second wall 25 typically faces the blocking surface with a complementary surface extending substantially perpendicular to a transversal direction Y too.

[0084] The fastening mechanism 6 comprises a removable fastening organ 61 suited to bring the second wall 25 of the structure 20 in contact with the blocking surface of the first wall 41 when the removable fastening mechanism 6 is in the locked position. In a preferred example, the removable fastening organ 61 exerts a tightening force that tends to press the first wall 41 and the second wall 25 together.

[0085] In a preferred example, the fastening mechanism 6 comprises four removable fastening organ 61, each being suited to cooperate with one of four first walls 41 of the frame 4 and one of four second walls 25 of the workbench 2, thus totalizing four distinct fastening points for fixation of the workbench 2 on top of the mobile platform 1. In this case, it may be advantageous that two of the four fixation point are disposed at proximity of a front side of the workbench, and the other two fixation points are disposed at proximity of a rear side of the workbench 2.

[0086] In this manner, the blocking surface of the first wall 41 forms a lateral stop preventing the workbench 2 to move relatively to the frame 4 along the transversal direction Y. The workbench 2 extending over a relatively important height compared to its width along Y, this feature may improve the stability of the assembly, especially during turns which may tend to make the workbench 2 tip over.

[0087] In case in which a the removable fastening organ 61 comprises a bolt, or any other fastening solution comprising an elongated part such as a rod, the first vertical wall 41 can comprise a first fastening hole 42 suited to be aligned with a second fastening hole 26 of the second vertical wall 25. In this way, the workbench is fastened and kept from moving upwards along the Z direction and along the longitudinal direction X as the removable fastening organ 61 is passed through each hole for adopting the locked position.

[0088] In other examples, the first wall and the second hole are exempted from any holes, and the tightening force exerted by the removable fastening organ 61 bringing the first wall and the second wall together may be sufficient to keep the workbench from moving in all the directions.

[0089] In general, it may be advantageous that the first vertical wall 41 extends downwards from a lateral side of the frame 4, along the vertical direction Z, towards the ground. This may improve the accessibility of the removal fastening mechanism 6 and prevent any protruding parts to constitute a hazard when the mobile platform 1 is moving without a workbench 2. Typically, the second vertical 25 wall can extend downwards in a complementary manner to face the first vertical wall 41.

[0090] The first vertical wall 41 can extend downwards to form a downward end 43. In this case, the first wall 41 can extend for a length that is short enough to maintain a gap 43 between a downward end 410 and the respective wheel 3. Such a gap 43 may present a minimum dimension D at least equal to 75mm to allow passage of the hand of an operator seeking for example to manipulate the removable fastening mechanism 6 from an interior side of the first vertical wall 41.

[0091] It is now referred to figure 11 to 13, which each represent a particular example in which the workbench comprises height adjustable legs 8.

[0092] The height adjustable legs 8 can comprise a first static part 81 fixed to the structure 20 and a second mobile part 82 configured to be able to rest on the ground G when elongated. The first static part 81 may be part of the structure 20, or it may be fixed to the structure 20.

[0093] In examples, the second mobile part 82 is rotatably mounted on the first static part 81. In other examples, the second mobile part 82 is able to translate relative to the first static part 81.

[0094] Figures 11 and 12 show a front view of the assembly wherein two height adjustable legs 8 are visible.

[0095] Typically, the assembly comprises four height adjustable legs 8. In a preferred example, mainly for stability and balance reasons, the four height adjustable legs 8 can be distributed at proximity of the front and rear sides of the workbench 2, in such a way that the workbench comprises two front adjustable legs 8 and two rear adjustable legs 8.

[0096] For clarity reasons, only the front height adjustable legs are shown and discussed. In this case, both front and rear adjustable legs comprise similar features unless specified otherwise.

[0097] Figure 11 shows a front view of the assembly, wherein the workbench 2 rests on top of the frame 4 of the mobile platform 1, and two front height adjustable legs 8 are visible. In the illustrated configuration of figure 11, the height adjustable legs 8 are in a retracted position. In the retracted position, the second mobile part 82 of the height adjustable leg 8 is retracted, and remains distant from the ground G. Typically, the overall height of the height adjustable leg 8 may thus be inferior to the height of the workbench 2, when measured for example at the bottom surface of the workbench 2. The retracted position represents a minimal height of the height-adjustable leg 8.

[0098] The height adjustable legs 8 can extend mainly vertically in order not to protrude excessively beyond the width of the workbench 2. Moreover, the height adjustable legs 8 can remain distant from the ground G at least at a distance superior to 10cm, preferably 20cm above the ground in order to avoid interfering with objects or obstacles laying on the ground, especially when the assembly is in motion.

[0099] Typically, each height adjustable leg 8 can comprise a blocking mechanism (not shown) that is configured to block the second mobile part 82 of the height adjustable leg 8 at a desired height. For example, it can comprise a removable rod and a plurality of notches for fixation of the height at several predetermined values. Or it can comprise a clamp-arm mechanism or a jack-type mechanism that is suited for blocking the second mobile part 82 at any height value between a predetermined range. In other examples, it can comprise a brake mechanism and the motion of the second mobile part can be actuated by a motor or a cylinder. In general, it may be configured to prevent the second mobile part 82 from moving and force the adjustable leg back to its retracted position under the action of the weight of the workbench 2.

[0100] Typically, each height adjustable leg 8 can comprise a lifting mechanism (not shown) configured to exert a lifting force sufficient to lift the workbench above the mobile platform 1. For instance, the height adjustable leg 8 can comprise a manual or actuated jack-type mechanism.

[0101] Figure 12 shows a configuration wherein the height adjustable legs 8 are in an elongated position. The elongated position corresponds to any height value of the height adjustable leg 8 that results in a lifting of the workbench 2. Typically, the height adjustable legs 8 can adopt any height value in a range from 290mm to 460mm. In this configuration, and prior to the lifting of the workbench 2, the removable fastening mechanism 6 is in the unlocked position. In particular, the removable fastening organ 61 is removed and the first wall 41 and second wall 25 are able to move freely from one-another, at least along the vertical Z direction.

[0102] In this example, in the elongated position, the second mobile part 82 rests on the ground and the workbench 2 is lifted upwards, above the top surface 40 of the frame 4. In this configuration, the bottom surface 27 of the structure of the workbench 2 is distant to the top surface 40 of the frame 4 of the mobile platform 1. The workbench 2 is thus not resting on the mobile platform 1 but is supported by the height-adjustable legs 8 resting on the ground.

[0103] Advantageously, the height adjustable legs can be configured to lift the workbench at least 10mm above the frame 4 of the mobile platform, preferably at least 20mm.

[0104] As represented by figure 13, the height adjustable legs 8 can additionally be used for correcting the horizontality of the workbench 2, in particular of an optional work surface 21, so it can be used on uneven terrain or even on slight slopes. Indeed, figure 13 shows a particular example wherein the assembly is stopped on a slight slope, and the frame is in a position that is not horizontal.

[0105] In this example, a first height adjustable leg 8 adopted an elongated height of a first value H1 and a second height adjustable leg 8 adopted an elongated height of a second value H2 different from the first value H1. As a result, the workbench 2 is lifted and tilted back to a horizontal position at once.

[0106] For clarity reasons, only a front view is shown and a roll angle θx around the longitudinal direction X is represented after correction by height adjustable legs 8 that are laterally opposite. However, it is understood that the same action can be performed by front and rear adjustable legs for correction of a pitch angle θy around the transversal direction Y. To this end, in examples, each height adjustable leg 8 may be controlled individually, and each height adjustable leg 8 can be blocked at a different height when in the elongated position for correction of both the pitch angle θy and / or the roll angle θx of the workbench. In this manner, the horizontality of the workbench can be restored completely and in three dimensions.

[0107] To this end, the optional first wall 41 may advantageously form a stop preventing the workbench to slide off the frame 4 in particular when unlocking the removable fastening mechanism 6 for correction of the workbench 2 horizontality or for lifting the workbench 2 in order to release the mobile platform.

[0108] The height adjustable legs 8 can also be used to release the workbench 2 from the mobile platform 1. As illustrated on figure 14, this feature may allow the mobile platform 1 to move away from the workbench 2, if the removable fastening mechanism 6 is in the unlocked position and the height adjustable legs 8 are in the elongated position. The mobile platform 1 is thus able to perform another task, for example move a second workbench, and come back when the operator has finished working on the first workbench to move it to another location.

[0109] In order to receive the workbench 2, the mobile platform 1 can move to a position suited for receiving the workbench 2, typically underneath the workbench 2 when the height adjustable legs are in the elongated position. The height adjustable legs 8 can then retract back to the retracted position and allow the bottom surface 27 of the workbench 2 to rest on the top surface 40 of the mobile platform 1. The removable fastening mechanism 6 can then be put in the locked position, and the assembly can move to a desired location.

[0110] Each height adjustable leg 8 may comprise an actuator, for example a motor or a cylinder suited to allow height adjustment by moving the second moving part 82 relatively to the first static part 81. In this case, the height adjustable legs 8 can be remotely controlled by the operator, along with the mobile platform driving controls.

[0111] In other examples, each height adjustable leg 8 can comprise a manual adjusting mechanism, for example comprising a screw and a nut, or gears, for moving the second moving part 82 relative to the first static part 81.

[0112] The height adjustable legs may each be arranged at proximity of a second wall 25 of the structure 20 of the workbench.

[0113] In examples, the height adjustable legs are disposed laterally on the workbench and extend entirely laterally relative to the mobile platform 1, so that the mobile platform 1 can move away from the workbench 2 by passing through a passage formed between two height adjustable legs 8. The passage thus formed being larger than the overall width of the mobile platform 1.

[0114] In examples, the four height adjustable legs 8 are disposed two-by-two laterally on each sides of the workbench 2, and the minimal distance, when projected on a transverse plane, separating two laterally opposite height adjustable legs 8 is at least superior to an overall width of the mobile platform 1.

[0115] In this manner, the mobile platform 1 can easily move away from underneath the workbench 2 and / or easily move towards the space underneath the workbench 2 to a position suited for receiving the workbench 2.

[0116] The workbench 2 can further comprise a passage 28, preferably open to a lateral side of the workbench 2, configured to cooperate with a mobile portion of an external lifting mechanism to lift the workbench 2.

[0117] For example, an external lifting mechanism can be a crane, or a mobile lifting solution such as a pallet trolley or a motorized pallet truck. Any other lifting solution known to the skilled person can be used in cooperation with the passage 28.

[0118] In particular, and as illustrated on figure 15, the workbench can comprise two passages 28, spaced and each dimensioned to allow a fork of a lifting mechanism to penetrate both passages 28 at once and reach a balanced position suitable for safe and stable lifting of the workbench 2. Preferably, each passage 28 goes through the entire width of the workbench 2.

[0119] According to an example illustrated on figure 16, the workbench 2 can comprise an intermediate fixation plate 29 configured to create an interface between the frame 4 of the mobile platform 1 and the structure 20 of the workbench 2. In this case, the intermediate fixation plate 29 is distinct from both the workbench 2 and the mobile platform 1, and the workbench 2 can be fixed to the intermediate fixation plate 29, and the intermediate plate 29 can be fixed to the mobile platform 1.

[0120] Thanks to this solution, any protruding part composing the fixation of the workbench to the mobile platform is deported on this separated intermediate fixation plate 29, including typically the second wall 25. As a result, the workbench 2 does not feature any protruding fixation parts extending beneath the structure 20, and the workbench 2 can be lifted from the intermediate plate 29 and put directly on the ground. Also, the mobile platform 1 can be exempted from any protruding parts extending upwards from the frame 4 for a safer use.

[0121] In particular, the workbench does not comprise the second wall 25, and the intermediate fixation plate 29 comprises the second wall 25.

[0122] Preferably, the intermediate plate 29 comprises bent sheet metal portions forming the passages 28.

[0123] In a particular example, the intermediate fixation plate 29 comprises a stop surfaces 290 configured to stop a movement, in a plane formed by the frame 4, of the workbench 2 relative to the mobile platform 1, when the intermediate plate 29 is fixed to the mobile platform 1. Preferably, the stop surface 290 is obtained by bending a portion of the intermediate plate 29. To this end, the intermediate plate 29 can be entirely formed from sheet metal.

[0124] Preferably, the intermediate plate 29 comprises at least four stop surfaces 290: a front, a rear, and two laterally opposite stop surfaces 290 each configured to stop a movement of the workbench 2 in a longitudinal and / or transversal direction.

[0125] In an example, the stop surface 290 can comprise a fixation hole for letting through a screw for cooperation with a hole on the structure 20 of the workbench 2. The skilled person will understand any other suitable fixation means is possible.

Claims

1. An assembly comprising a mobile platform (1) and a workbench (2) fastenable on top of the mobile platform (1), - the mobile platform (1) being suited for driving the assembly and comprising: ∘ two pairs of wheels (3), ∘ a power storage device (53), ∘ a motor (52) powered by the power storage device (53), the motor (52) being suited to drive at least one of the pairs of wheels (3), ∘ a frame (4) comprising a top surface (40) suited for supporting the workbench (2) and - the workbench (2) comprising: ∘ a structure (20) configured to rest on the top surface (40) of the frame (4), ∘ a work surface (21) formed on top of the workbench structure (20), ∘ a storage unit (22), the assembly further comprising a removable fastening mechanism (6) suited to cooperate with the frame (4) of the mobile platform (1) and with the structure (20) of the workbench (2), the removable fastening mechanism (6) being able to adopt a locked position in which the workbench (2) is fastened onto the mobile platform (1) and an unlocked position in which the workbench (2) rests on the top surface of the frame (4) and is free to be removed from the mobile platform (1).

2. Assembly according to claim 1, wherein the removable fastening mechanism (6) is directly accessible from a side of the assembly.

3. Assembly according to any of claims 1 and 2, wherein the frame (4) comprises a first wall (41) extending vertically and forming a blocking surface (44) extending substantially perpendicular to a transversal direction Y of the frame (4), the structure (20) comprising a second wall (25) extending vertically and facing the blocking surface (44), the fastening mechanism (6) comprises a removable fastening organ (61) suited to bring the second wall (25) of the structure (20) in contact with the blocking surface (44) of the first wall (41) when the removable fastening mechanism (6) is in the locked position.

4. Assembly according to the preceding claim, comprising an intermediate fixation plate (29), distinct from the workbench (2) and the mobile platform (1), the intermediate fixation plate (29) comprising a stop surface (290) for fixation to the structure (20) of the workbench (2) and comprising the second wall (25) extending vertically and facing the blocking surface (44) of the first wall (41) of the mobile platform (1).

5. Assembly according to any of claims 1 to 3, wherein the workbench (2) comprises four height-adjustable legs (8) each comprising a first static part (81) and a second mobile part (82) configured to move relative to the first static part (81) and to rest on the ground (G), each height-adjustable leg (8) being configured to allow the mobile second part (82) to move from a retracted position to an elongated position in order to lift the workbench (2) above the frame (4) of the mobile platform (1), when the removable fastening mechanism (6) is in the unlocked position.

6. Assembly according to claim 5, wherein the four height adjustable legs (8) are disposed two-by-two laterally on both lateral sides of the workbench (2), and a minimal distance separating two laterally opposite height adjustable legs 8, when projected on a transverse plane, is at least superior to an overall width of the mobile platform 1.

7. Assembly according to any of claims 1 to 6, wherein the pairs of wheels (3) are disposed in such a way that they are confined below and within an overall width of the workbench (2).

8. Assembly according to any of claims 1 to 7, the power storage device is located below the frame (4) at a center region between both the front side and the rear side of the frame (4).

9. A Method for transporting work equipment comprising the use of an assembly as claimed in claims 1 to 8.

10. The method as claimed in claim 9, comprising: - furnishing a mobile platform (1), - mounting a workbench (2) on top of the mobile platform (1) by cooperation of the structure (20) with the top surface of the frame (4), - locking the workbench (2) and the mobile platform (1) by putting the removable fastening mechanism (6) in the locked position, - remotely guiding the mobile platform (1) to drive the workbench (2) to a desired location.

11. The method as claimed in claim 9, wherein the workbench (2) comprises height adjustable legs (8), the method further comprising, after remotely guiding the mobile platform (1) to drive the workbench (2) to a desired location, - unlocking of the workbench (2) from the mobile platform (1) by putting the removable fastening device (6) in the unlocked position, - adjusting the height of at least one adjustable leg to lift the workbench (2) above the top surface of the frame (4) of the mobile platform (1).

Images