Mobile lifting work platform

Abstract

The invention provides a mobile lifting platform (1) comprising a) a base module (2) with a chassis (215) with wheels (205) and a vertical lifting device (206) attached or attachable to the base module (2), b) a drive module (4) detachably connected to the base module (2), comprising at least one drive wheel (402) electrically driven by means of a battery-operated electric motor, and c) a work platform module (3) detachably attached to the vertical lifting device (206), comprising a work platform (301).

Description

[0001] The invention relates to a mobile elevating work platform.

[0002] Aerial work platforms are known in numerous embodiments, for example from DE10242480A1, DE10335687A1, DE102008023645B4, DE202004015422U1, DE202010013830U1, EP2479135B1 or US 5890737 A. Depending on the intended use, for example the weight to be carried, the designs and sizes of the corresponding devices vary greatly.

[0003] DE202017002208U1 discloses a bimobile work platform (BIMA) in which at least two axles with attached wheels and lifting system as module 1 or 2 can be detached and reassembled without tools from the axle connector arranged between the axles as module 3 or from the work platform as module 4, respectively, via detachable connection components, wherein each module forms a unit transportable by one person with a maximum weight of 35 kg.

[0004] However, a mobile elevating work platform is lacking, which would be advantageous for use in manual work, for example in the context of painting or renovation work.

[0005] The object of the present invention is to provide such a lifting platform.

[0006] To solve the problem, the invention provides a mobile elevating work platform, comprising a) a base module with a chassis with wheels and a vertical lifting device attached or attachable to the base module, b) a drive module detachably connected to the base module, comprising at least one drive wheel electrically driven by means of a battery-operated electric motor, and c) a work platform module detachably attached to the vertical lifting device and comprising a work platform.

[0007] The core idea of ​​the invention is to provide a mobile elevating work platform (MEWP) that is modular in design and can be easily disassembled into individual, preferably portable, modules and reassembled from these modules. The MEWP according to the invention comprises at least three modules: a base module, a work platform module, and a drive module. However, it may optionally comprise more modules, for example, four or five. The modules are preferably connectable to one another by means of quick-release couplings, e.g., by means of snap-fit ​​or clamp connections. The work platform module, particularly in a configuration that includes a cabin, is preferably designed to be foldable. The MEWP according to the invention is particularly advantageous in the construction industry, e.g., for electrical work, painting and varnishing, and the like.

[0008] The terms "detachably connected," "detachably attached," "detachable," or "attachable" in relation to a module mean that the module can be coupled to another module without having to loosen a connection intended to be permanent (non-detachable), such as an adhesive bond, rivet connection, weld connection, solder connection, or the like. The terms "detachably connected," "detachably attached," "detachable," "attachable," or "coupleable" imply that a module connection can be disconnected and reconnected without damage. These terms do not preclude the possibility that one or more screw connections between modules, which are not permanently secured against loosening (e.g., by adhesive), may need to be loosened and re-tightened.

[0009] The term "portable" in relation to a module of the device according to the invention means that the weight of a module is within a range that allows the module, either as a whole or divided into a maximum of two or three further components (sub-modules), to be transported by a maximum of two people using muscle power. The weight of a module can, for example, be in the range of 40-55 kg, preferably in the range of 40-50 or 40-45 kg. By appropriately designing the modules and / or using suitable materials, for example, lightweight metals, e.g., aluminum, or suitable plastics, the weight of a module can be kept within a portable range.

[0010] When the terms "horizontal" or "vertical" are used here in reference to the pivoting (rotation, tilting) of the vertical lifting device or the lifting columns, these terms refer to the plane of the aerial work platform, unless the context clearly indicates otherwise. In operation, the aerial work platform is essentially parallel to the platform surface of the base module and to the ground, i.e., parallel to the plane of the earth's surface. Therefore, pivoting, tilting, laying down, or rotating into a horizontal position here means, unless the context clearly indicates otherwise, pivoting, tilting, laying down, or rotating into a plane parallel to the plane of the earth's surface. The terms "pivot," "tilt," "lay down," or "rotate" are used synonymously here in relation to the vertical lifting device or the lifting columns, unless the context clearly indicates otherwise.A "vertical" method means a movement in a direction orthogonal to the Earth's surface, i.e. in or against the direction of gravity.

[0011] Where the terms "top" and "bottom" are used here, they refer to the position of individual parts relative to each other in relation to the direction of gravity in a normal operating situation of the aerial work platform. "Bottom" therefore means towards the ground, i.e., in the direction of gravity, and "top" means in the opposite direction to gravity.

[0012] The terms "front" and "rear" here refer to the direction of travel of the lifting platform according to the invention when the platform is pushed manually, unless the context clearly indicates otherwise. "Front" means an orientation in the direction of travel, "rear" an orientation opposite the direction of travel. The direction of travel when pushing the lifting platform manually may differ from the direction of travel when the platform is motorized. For example, the direction of travel when motorized, such as by means of an electric motor, may be "rear".

[0013] The terms "quick coupling" and "quick connection" are used synonymously here, as are the terms "snap connection" and "clip connection".

[0014] The terms "collapsible" or "foldable" in relation to a module mean that the module can be disassembled into individual parts or folded while maintaining at least some connections between the individual parts.

[0015] The aerial work platform according to the invention comprises at least three interconnectable modules: a base module, a work platform module, and a drive module. A vertical lifting device is attached to, or can be attached to, the base module, enabling the work platform module to be moved vertically. The vertical lifting device can be part of the base module or the work platform module. It can also be designed as a separate module. In one embodiment, the work platform module may comprise only the work platform. In another embodiment, it may also include a cabin surrounding the work platform. The drive module comprises at least one drive wheel that can be electrically driven by a battery-powered electric motor. The drive wheel can be arranged, for example, centrally or at the end of the base module. The electric drive is preferably powered by at least one battery, preferably at least one rechargeable battery.The at least one battery can be part of the base module or the drive module. The at least one battery can also be designed as a separate module or as a sub-module of one of the modules, e.g., the base module and / or the drive module.

[0016] The aerial work platform according to the invention is preferably movable not only by means of an electric motor but also manually. For this purpose, a handle is preferably attached to the base module of the aerial work platform according to the invention, which is preferably detachably attached to the base module, for example, by clipping into provided brackets. In addition, preferably two, three, or four passive rollers or wheels are attached to the base module next to the drive wheel, which serve to stabilize the aerial work platform both when moved manually and when moved by motor.

[0017] In a preferred embodiment, the lifting platform according to the invention preferably has a total weight of ≤ 140 kg, preferably 90-140 kg, preferably 100-135 kg, more preferably 110-135 kg, and particularly preferably 120-135 kg.

[0018] In a preferred embodiment of the aerial work platform according to the invention, the base module, the work platform module, and the drive module each have a weight of ≤ 50 kg, preferably ≤ 45 kg. For example, the base module, the work platform module, and / or the drive module can each have a weight of 35–50 kg, 40–50 kg, or 40–45 kg. The weights of the modules can be the same or different from each other.

[0019] The base module, the work platform module, and / or the drive module of the aerial work platform according to the invention can be composed of sub-modules, each sub-module having a weight of ≤ 30 kg, preferably ≤ 25 kg, more preferably ≤ 20 kg, and more preferably ≤ 15 kg. A sub-module can, for example, have a weight of 5-30 kg, 10-30 kg, 15-30 kg, 10-25 kg, 15-25 kg, or 20-25 kg. A sub-module, for example, a sub-module of the base module or the drive module, can, for example, comprise or be formed by one or more batteries.

[0020] In a particularly preferred embodiment of the lifting platform according to the invention, the vertical lifting device, which is attached or can be attached to the base module, is pivotable about a horizontal axis. To prevent unintentional pivoting of the vertical lifting device, for example in an operating situation with the lifting platform raised vertically to its maximum working height, the vertical lifting device can be secured against rotation in a suitable manner.

[0021] Preferably, the vertical lifting device is pivotable about the horizontal axis and can be placed on the base module. For example, the vertical lifting device can be pivoted about the ends of at least one, preferably two or more, lifting columns, which are rotatably mounted about an axis and point towards the base module, so that it can be placed on the top of the base module, preferably after the work platform module attached to the vertical lifting device has been detached. In this way, the base module with the attached vertical lifting device can be folded together to save space.

[0022] In an alternative embodiment, the base module and vertical lifting device can also be designed such that the vertical lifting device can be detached from and reattached to the base module, for example, by means of suitable quick-release connections, such as snap or clamp connections. The vertical lifting device can, for example, be designed so that its ends facing the base module can be detachably inserted into corresponding holders on the base module. The vertical lifting device can be secured using suitable locking devices. A vertical lifting device that can be easily detached from the base module in this way can, for example, be placed on the base module after being detached.The vertical lifting device, which is mounted horizontally on the base module, can also be fixed in this position by appropriately designing the brackets on the base module and the vertical lifting device.

[0023] In a further preferred embodiment of the lifting platform according to the invention, the vertical lifting device is designed such that a horizontal storage surface is formed when the vertical lifting device is placed on the base module. Work materials, tools, and the like can be placed and transported on this storage surface.

[0024] In a further preferred embodiment of the lifting platform according to the invention, the storage surface is designed such that the work platform module can be placed on the storage surface in its folded state. This is particularly advantageous in an embodiment where the work platform is surrounded by a cabin. The storage surface can thus also be used, for example, to at least temporarily store and transport the folded work platform module, or to store the device with the folded work platform module in a space-saving manner.

[0025] In a particularly preferred embodiment, the mobile elevating work platform according to the invention can be assembled by coupling the base module, the work platform module, and the drive module using quick-release couplings. The quick-release couplings can be clamp connections or snap connections. In embodiments where the modules are composed of sub-modules, it is preferred if the modules can also be assembled into the respective module by means of quick-release couplings provided on the sub-modules.

[0026] The mobile elevating work platform according to the invention preferably has suitable sensors, for example position sensors, tilt sensors, acceleration sensors and / or angle sensors.

[0027] In a particularly preferred embodiment of the aerial work platform according to the invention, at least the work platform module is foldable, especially in an embodiment where a cabin is provided. For space-saving folding of the work platform module, it may also be advantageous to use, for example, telescopic poles or hydraulic springs, which facilitate folding the work platform module. Preferably, the base module with the vertical lifting device arranged thereon is also foldable, the latter meaning that the vertical lifting device can be pivoted into the horizontal position and / or detached from the base module and placed on the base module.

[0028] The mobile elevating work platform according to the invention is preferably controllable by hand by means of an electrical control, which can for example be arranged on a handle, for example by means of joysticks.

[0029] In one embodiment, the mobile elevating work platform according to the invention can also be controlled by computer. For this purpose, the elevating work platform can be equipped with a computer unit that sends control signals to, for example, the drive module and / or the vertical lifting device. Control can be effected via the computer unit by means of a data processing program that processes suitable data, such as predefined motion data, and forwards it, for example, to actuators. The elevating work platform can thus also be moved, steered, and handled automatically. In one embodiment, a mobile elevating work platform according to the invention can also be operated autonomously. The computer unit can preferably also process sensor data.

[0030] The mobile elevating work platform according to the invention can, for example, have a length (measured from the front part of the base module to the rear part of the base module) of 90-130 cm, preferably 90-120 cm, more preferably 100-120 cm. The width (measured from one side of the base module to the other side of the base module) of the elevating work platform can, for example, be 60-90 cm, 65-85 cm, or 70-80 cm. The maximum working height, i.e., the maximum height to which the work platform can be positioned by moving it vertically above the ground, is preferably 80-100 cm, for example, 90 cm. The maximum working weight, i.e., the maximum weight that can be moved vertically by the elevating work platform, e.g., in the form of persons, work materials, tools, and the like, is preferably 120-140 kg, more preferably 125-135 kg, for example, 130 or 135 kg.

[0031] The invention is explained in more detail below with reference to the attached drawings for illustrative purposes only. Figure 1 . Spatial view of an embodiment of a mobile elevating work platform according to the invention. Figure 2 . Side view of the in Figure 1 The illustrated embodiment of a mobile elevating work platform according to the invention. Figure 3 . Sectional view of the in Figure 1 The illustrated embodiment of a mobile elevating work platform according to the invention. Figure 4 Spatial view of the in Figure 1 The illustrated embodiment of a mobile elevating work platform according to the invention is shown in its folded state. Figure 5 . Side view of the in Figure 1 The illustrated embodiment of a mobile elevating work platform according to the invention is shown in its folded state. Figure 6 . Side view of the basic module of the in Figure 1 The illustrated embodiment of a mobile elevating work platform according to the invention. Figure 7. Rear view of the base module of the in Figure 1 The illustrated embodiment of a mobile elevating work platform according to the invention. Figure 8 . Spatial view of another embodiment of a mobile elevating work platform according to the invention in working position. Figure 9 Spatial view of the in Figure 8 The illustrated embodiment of a mobile elevating work platform according to the invention with a folded work platform module. Figure 10 Side view of another embodiment of a mobile elevating work platform according to the invention. Figure 11 Front view of the in Figure 10 further embodiment of a mobile elevating work platform according to the invention, as shown. Figure 12 . Rear view of the in Figure 10 further embodiment of a mobile elevating work platform according to the invention, as shown. Figure 13 . Top view of the in Figure 10 further embodiment of a mobile elevating work platform according to the invention is shown. Figure 14. Bottom view of the chassis of the in Figure 10 further embodiment of a mobile elevating work platform according to the invention, as shown. Figure 15 . Spatial view of another embodiment of a mobile elevating work platform according to the invention. Figure 16 Spatial view of a part of the in Figure 14 further embodiment of a mobile lifting platform according to the invention with a vertical lifting device tilted into the horizontal position. Figure 17 . Spatial view of another embodiment of a mobile elevating work platform according to the invention. Figure 18 Detailed views of a locking device for the vertical lifting device at the in Figure 17 The illustrated embodiment of a mobile elevating work platform according to the invention. A. Locked state. B. Unlocked state.

[0032] Figure 1 Figure 1 shows a simplified spatial view of an embodiment of a mobile elevating work platform according to the invention. Figures 2 to 7Reference is also made to the same embodiment of the mobile elevating work platform 1 according to the invention. The mobile elevating work platform 1 comprises three modularly connectable components: a base module 2, a work platform module 3, and a drive module 4. The drive module 4, shown here in a disconnected state, comprises a drive wheel 402 and an electric motor (not visible here) that drives the drive wheel 402. The drive wheel 402 may have a parking brake. The electric motor 401 may, for example, be designed as a hub motor and thus as part of the drive wheel 402. Since the drive module 4 is arranged here in the rear section 204 of the base module 2, it may also be referred to as a "rear-motor variant" (in contrast to a "mid-motor variant" described in more detail below). The base module 2 comprises a chassis 215 with wheels 205 facing the ground.In the embodiment shown here, four wheels 205, two at the front and two at the rear, are mounted on the chassis. However, it is also possible to provide fewer or more than four wheels 205. The wheels 205 can, for example, be designed as swivel and / or fixed casters, preferably as heavy-duty swivel and / or fixed casters. The use of omnidirectional wheels is also possible. Preferably, the wheels 205 are lockable, for example, by means of a braking device. The braking device can comprise individual brakes arranged on each wheel or be designed as a handbrake that locks all or at least some of the wheels. The chassis 215 is covered by a cover 216, for example, made of metal or plastic, preferably plastic. The base module 2 has a top 201, a bottom 202, a front part 203, a middle part 219, and a rear part 204.The front part 203 of the base module 2 is slightly lowered compared to the rest of the base module 2, i.e., the middle part 219 and the rear part 204, and forms a tread surface 218 on its upper side, which is preferably designed to be non-slip. A recess 207 for receiving the drive module 4 is arranged in the rear part 204 of the base module 2. The chassis 215 and the cover 216 are designed accordingly in this area. The drive module 4 can be inserted into the recess 207 and coupled to the base module 2 by means of suitable quick-release couplings. The drive module 4 can be quickly and easily disconnected from the base module 2 again by means of these quick-release couplings, e.g., snap-fit, clamp, or plug connections.The necessary electrical connections for connecting the electric motor, which is arranged, for example, as part of the drive wheel in the drive module 4, with the battery 220, which is preferably a rechargeable battery and is arranged here in the central part 219 of the base module 2, are made, for example, by means of a plug connection, preferably automatically when the drive module 4 is inserted into the recess 207 of the base module 2.

[0033] A handle 214 is arranged at the rear 204 of the base module 2, to which a control unit 213 with joysticks 217 for controlling the drive module 4 is attached. The aerial work platform 1 can be equipped with sensors (not shown in detail here), such as position sensors, tilt sensors, acceleration sensors, and / or angle sensors. Depending on their purpose, the sensors can be arranged on the base module 2, the work platform module 3, and / or the drive module 4. The control unit can be designed as a programmable logic controller (PLC), allowing the mobile aerial work platform to be controlled, for example, via a computer program, and thus moved and handled automatically based on digital data stored in the computer program.

[0034] A vertical lifting device 206 is arranged on the base module 2, by means of which the work platform module 3 can be moved vertically by electrical drive, for example by actuating a foot pedal. The drive of the vertical lifting device 206 is electrically connected to the battery 220. The vertical lifting device 206 comprises two lifting columns 209, which are rotatably attached to the base module 2 by means of an axle 208 mounted in axle bearings 212. The axle 208 can be securely locked against rotation, so that when the mobile work platform 1 is in use, unwanted tipping of the work platform module 3 about the axle 208 is effectively prevented (see figure). Figures 6, 7The vertical lifting device 206 comprises a plate 211, which is attached to the lifting columns 209 on the surface 2111 facing the front part 203 of the base module 2. A trough- or box-like storage element 210 is arranged on the surface 2112 of the plate 211 facing the rear part 204 of the base module 4. In this embodiment, the storage element 210 projects from the plate 211 on one side in a direction transverse to the longitudinal direction (direction from the front part 203 to the rear part 204) of the base module 2, but does not project beyond the edge of the wall element 305 of the work platform module 3 in this direction. A portion of the surface of the plate 211 facing the rear part 204 of the base module 4 can serve as a storage surface 221 for the work platform 3 (see figure). Fig. 4 ) serve, as will be explained in more detail below.

[0035] In this embodiment, the work platform module 3 comprises a work platform 301 and a cabin 302. The cabin 302 includes a wall element 305, which in this embodiment has a double-T cross-section and is arranged towards the rear 204 of the base module 2, side frame parts 303, and hinged doors 304. The work platform module 3 is detachably attached to the vertical lifting device 206, or in this embodiment to the lifting columns 209, by means of the wall element 305. The work platform module 3 can be attached to the vertical lifting device 206, for example, by means of snap, clamp, or plug connections. The work platform module can be moved vertically by means of the lifting columns 209. The cabin 302 is arranged above the work platform 301 and can accommodate 1-2 people, preferably 1 person. The cabin 302 can be composed of tubular metal or plastic elements.The maximum working weight can be, for example, 120-140 kg, or 135 kg. A shelf 306 is arranged on the wall element 305, which can be used, for example, for storing tools, work materials, and the like. In this embodiment, a support 307 is arranged below the work platform 301. The support 307 can, for example, be formed by bending a metal profile forming the work platform 301 twice. The upper surface of the work platform 301 is preferably designed to be slip-resistant, for example, by ribbing a metal surface or by applying a rubber coating to the surface. The work platform 301 can be accessed by a person, for example, via the step 218 in the front part 203 of the base module 2.

[0036] The Figures 2-5 show further views of the in Figure 11. The illustrated embodiment of a mobile elevating work platform according to the invention. Reference numerals denote identical features.

[0037] Figure 2 shows a side view of the in Figure 1 The illustrated embodiment of a lifting platform 1 according to the invention. In this illustration, the drive module 4 is received in the recess 207. The work platform module 3 is shown here in its lowest position, i.e., not in a vertical direction. A double arrow symbolically indicates the (vertical) direction in which the work platform module 3 can be moved by means of the vertical lifting device 206.

[0038] Figure 3 shows a sectional view of the in Figure 1 The illustrated embodiment of a lifting platform according to the invention 1. Here, one of the lifting columns 209 is more clearly visible, which is located in the Figure 1 and 2partially covered by parts of the vertical lifting device 206. As described above, the lifting columns 209 can be rotated or tilted about the axis 208, which is mounted in axle bearings 2012. For this purpose, the lifting columns 209 are provided in their end regions facing the base module 2, for example, with bores or the like for the passage of the axis 208. To prevent unintentional rotation about the axis 208, the lifting columns 209 can be detachably fixed against unintentional rotation about the axis 208 in a suitable manner. This can be achieved, for example, with the [features / connections] shown in the Figures 6 and 7 shown locking means, by means of hydraulic springs 230 (see Fig. 11 , 12) or in some other way. The battery 220, which is preferably a rechargeable battery and is provided for powering the vertical lifting device 206 and the drive module 4, is arranged in the central section 219 of the base module 2. The drive wheel 402 is not shown here for clarity. Guide rails 225, which can engage with corresponding guide elements of the drive module 4, facilitate the insertion of the drive module 4 into the recess 207 and thus the coupling of the drive module 4 with the base module 2. The battery 220 is preferably designed as a separate sub-module of the base module 2, so that it can be easily detached from and reconnected to the base module 2, for example, by means of quick-connect fittings designed as plug connectors.

[0039] Figure 4 shows the in Figure 1The illustrated embodiment of a lifting work platform 1 according to the invention, in which the vertical lifting device 206 is rotated by 90° about the axis 208 and the work platform module 3 is in a folded state (see also Fig. 5 The vertical lifting device 206 is rotated about the axis 208 such that the lifting columns 209 are tilted from a vertical orientation into a horizontal one and come to rest on the top side 201 of the base module 2. The lifting columns 209 are tilted towards the front part 203, so that the upper ends of the lifting columns 209 are essentially flush with the front side of the front part 203 (see figure). Fig. 5 The base module 2 and the drive module 4 are still coupled here. However, the drive module 4 can be decoupled from the base module 2, as shown in Figure 1The folded work platform module 3 is placed on a storage surface 221, which is formed by part of the surface 2112 of the plate 211 (when the vertical lifting device 206 is in its upright position) facing the rear 204. A trough-shaped storage element 210 is arranged on the surface 2112 of the plate 211 in the area adjacent to the storage surface 221. The storage element 210 can be used to store tools, work materials, etc., during transport of the aerial work platform 1.

[0040] Figure 5 shows a side view in Figure 1 illustrated embodiment of a lifting work platform 1 according to the invention, with vertical lifting device 206 rotated by 90° about the axis 208 and with folded work platform module 3 (see. Fig. 4 ).

[0041] In the Figures 6 and 7 show part of the in Figure 1The illustrated embodiment of a lifting platform 1 according to the invention, in which the cover 216 of the chassis is transparent and allows a view into the interior of the base module. Figure 6 shows a side view, Figure 7 A rear view of a side section of base module 2. The elements shown here for the left side are mirrored on the right side. A possible locking mechanism for the axis 208 is shown. A locking device 231, attached to the chassis 215 in base module 2, can be releasably engaged with a locking element 232, which is fixed to the axis 208 and projects vertically into base module 2 when the lifting column 209 is in its upright position.

[0042] The in the Figures 1 to 7The illustrated embodiment of a lifting platform 1 according to the invention can, for example, have a weight of 120-135 kg. The modules (base module 2, work platform module 3, and drive module 4) preferably each have a weight of 40-50 kg, particularly preferably 40-45 kg. Base module 2, work platform module 3, and drive module 4 can optionally also be divided into further sub-modules. For example, the batteries can be designed as a separate sub-module or as two or more sub-modules. The length of the base module 2, i.e., its extension in the direction from the front part 203 to the rear part 204, can, for example, be 110 cm, and the width, for example, 65-80 cm. The maximum working height, i.e., the height to which the work platform 301 extends above the ground 5 (see figure 2), is determined by the following: Fig. 6The distance by which the base module 2, with its wheels 205, can be moved vertically is, for example, 90 cm. The overall height of a lifting platform 1 in its fully extended position can, for example, be 220 cm. The maximum working weight, i.e., the maximum weight that the work platform module 3 can lift (e.g., one person plus tools and materials), is, for example, 120-140 kg, or 130 or 135 kg. The height of the platform 218 can be adjusted depending on the purpose.

[0043] The Figures 8 and 9 show a further embodiment of a mobile elevating work platform according to the invention 1. In Figure 8 The aerial work platform 1 can be seen with a work platform module 3 extended to its maximum working height, in Figure 9 with work platform module 3 lowered to its base position and folded up. This embodiment essentially corresponds to the one described in the Figures 1-7The embodiment of a lifting platform 1 according to the invention is shown, with the difference that the work platform module 3 is designed somewhat differently. Here, telescopic poles 208 are provided, which are attached on one side to side parts of the wall element 305 and on the other side to side plates 309 of the work platform module 3. By means of the telescopic poles 308, the work platform module 3 can be easily folded completely. It is not necessary to disassemble individual elements of the work platform module 3, for example, the cabin 302. In the Figure 8 and 9 In the illustrated embodiment of a lifting platform 1 according to the invention, a flap 233 is attached at the front of the central part 219 of the base module 2, which can be opened for direct access to the interior of the base module 2, e.g. to the battery 220.

[0044] The Figures 10 to 14 show a further embodiment of a mobile elevating work platform according to the invention 1. Figure 10shows a side view Figure 11 a front view (view of the front part 203) and Figure 12 a rear view (view of the rear part 204) of this embodiment of a lifting platform according to the invention 1. Figure 13 shows a top view of a further embodiment of a mobile elevating work platform according to the invention 1. Figure 14 shows a bottom view of chassis 215 of the in Figure 10 further embodiment of a mobile elevating work platform according to the invention 1. The reference numerals used here denote the same features as in the embodiment in the Figures 1 to 7 , so that these figures are referred to here to avoid unnecessary repetition.

[0045] For example, from Figure 10As can be seen, in this embodiment the drive module 4 is arranged in the central section 219 of the base module 2. This variant of a mobile elevating work platform 1 according to the invention is therefore also referred to as a "mid-motor variant". The drive module 4, which can be attached to and detached from the base module 2 by means of quick-release couplings, comprises two laterally arranged drive wheels 402. In the area of ​​the front section 203 and the rear section 204 of the base module 2, two wheels 205 are arranged on the chassis 215, for example swivel or fixed casters (see also Figure 14 The drive wheels 402 and / or the wheels 205 may be equipped with locking devices, e.g., parking brakes. The battery 220, not shown here, may be arranged in the base module 2 on a support formed by the chassis 215, for example in the middle section 219 and / or in the rear section 204. Two or more batteries 220 may also be provided. As can be seen from the in Figure 12As can be seen in the rear view shown, a flap 226 is provided on the rear part 204 of the base module 2 for access to the interior of the base module 2. Figure 14 The chassis 215, which is shown in the Figure 10 The illustrated embodiment is shown from below. The chassis 215 has contact surfaces on its underside, which can be made, for example, of sheet metal or plastic, and on which, for example, batteries 220 can be arranged. The drive wheels 402 are driven by electric motors, for example, designed as hub motors.

[0046] Even those in the Figures 7 to 14The illustrated embodiment preferably has a weight of 120-135 kg, with each individual module (base module 2, work platform module 3, drive module 4) weighing 40-50 kg, particularly preferably 40-45 kg. In this embodiment, base module 2, work platform module 3, and drive module 4 may optionally be composed of sub-modules, which preferably can be easily reassembled, for example, by means of plug-in or click connections. The battery(ies) 220 may be configured as a separate sub-module or as two or more sub-modules. The length of the base module 2, i.e., its extension from the front part 203 to the rear part 204, may, for example, be 120 cm, and the width approximately 80 cm. The interior space of the cabin 302 may, for example, be approximately 51 cm. The maximum working height, i.e., the height above the ground 5 to which the work platform 301 can be moved, is, for example, 90 cm.The overall height of the aerial work platform 1 in its basic position, i.e., in its fully lowered position, can be, for example, 151 cm. In its basic position, the work platform 301 can be positioned, for example, at a height of 43 cm above the ground 5. The platform 218 of the base module 2 in the area of ​​the front section 203 can be positioned, for example, at a height of 18–20 cm above the ground 5. However, the height of the platform can be adjusted depending on the intended use. The maximum working weight, i.e., the maximum weight that can be lifted by the work platform module 3 (e.g., one person plus tools and work materials), is, for example, 120–140 kg, or 130 kg.

[0047] During the Figures 10 to 14 In the illustrated embodiment, sensors can also be arranged at suitable locations on the base module 2, work platform module 3 or drive module 4, for example position sensors, tilt sensors, acceleration sensors and / or angle sensors.

[0048] The Figure 15 and 16 simplified representations of a further embodiment of a mobile elevating work platform according to the invention 1. Figure 15 shows a spatial view of this embodiment with vertically erected vertical lifting device 206 and work platform module 3 arranged on it. Figure 16 Figure 1 shows a spatial view of this embodiment in which the work platform module 3 has been removed and the vertical lifting device 206 has been tilted into a horizontal position. The base module 2 is positioned here as in the embodiment shown in the Figures 10 to 14The illustrated embodiment is designed accordingly. Here, hydraulic springs 230 are provided on the vertical lifting device 206 in the area of ​​the lifting columns 209, and these springs are attached at their base to the handle 214. The vertical lifting device 206 can be tilted into the horizontal position by means of the hydraulic springs by tilting the lifting columns 209 about the axis 208. The storage surface 221 can be used for transporting work materials and the like.

[0049] The Figure 17 and 18 show a further embodiment of a mobile elevating work platform according to the invention 1. Figure 17 shows a spatial view, Figure 18 Detailed views of a fixing device for the vertical lifting device 206 of the embodiment. Figure 18A This shows the locked state, Figure 18B the unlocked state. The embodiment shown here is a rear-engine variant of the mobile elevating work platform 1 according to the invention, similar to those described in the Figures 1 to 7as well as embodiments shown in Figures 8 and 9. Here, the vertical lifting device 206 is not rotatable about an axis 208, but is completely detachable from the base module 2. As shown in Figures 8 and 9. Figure 18As can be seen more clearly, the vertical lifting device 206, with its shafts 237 attached to the ends facing the base module 2, can be inserted into corresponding openings 236 in the base module 2. The vertical lifting device 206 is locked by means of a locking element 235 on the shaft 237, which can be engaged with a recess 238 of the lever 234 facing the base module 2. The lever 234 can be rotated by means of a handle 2341. By moving the lever 234, the vertical lifting device 206 can be unlocked and detached from the base module 2. Conversely, it can also be reconnected and locked to the base module 2 in the same way. The vertical lifting device 206, once detached from the base module 2, can be placed on the base module 2 after the work platform module 3 has been removed or with the folded work platform module 3 remaining attached.

Claims

1. A mobile aerial work platform (1), comprising a) a base module (2) with a chassis (215) with wheels (205) and a vertical lifting device (206) attached or attachable to the base module (2), b) a drive module (4) detachably connected with the base module (2), which comprises at least one drive wheel (402) that can be electrically driven by means of a battery-operated electric motor (401), and c) a work platform module (3) comprising a working platform (301) detachably fastened to the vertical lifting device (206).

2. The mobile aerial work platform (1) according to claim 1, wherein the aerial work platform (1) has an overall weight of ≤ 140 kg, preferably of 90-140 kg, further preferably of 100-135 kg, further preferably of 110-135 kg, especially preferably of 120-135 kg.

3. The mobile aerial work platform (1) according to one of claims 1 or 2, wherein the base module (2), the work platform module (3) and the drive module (4) each have a weight of ≤ 50 kg, preferably of ≤ 45 kg.

4. The mobile aerial work platform (1) according to claim 3, wherein the base module (2), the work platform module (3) and / or the drive module (4) are composed of submodules, wherein each submodule has a weight of ≤ 30, preferably of ≤ 25 kg, further preferably of ≤ 20 kg, further preferably of ≤ 15 kg.

5. The mobile aerial work platform (1) according to one of the preceding claims, wherein the vertical lifting device (206) can be pivoted around a horizontal axis (208) and / or detached from the base module (2) and reattached again.

6. The mobile aerial work platform (1) according to claim 5, wherein the vertical lifting device (206) can be pivoted around the horizontal axis (208) and / or detached from the base module (2) and placed on the base module (2).

7. The mobile aerial work platform (1) according to claim 6, wherein the vertical lifting device (206) is configured in such a way as to form a horizontal placement surface (221) when being placed on the base module (2).

8. The mobile aerial work platform (1) according to claim 7, wherein the placement surface (221) is configured in such a way that the work platform module (3) can be placed on the placement surface (221) in the collapsed state.

9. The mobile aerial work platform (1) according to one of the preceding claims, wherein the mobile aerial work platform (1) can be assembled by coupling the base module (2), the work platform module (3) and the drive module (4) by means of quick couplings.

10. The mobile aerial work platform (1) according to one of the preceding claims, wherein the aerial work platform (1) comprises sensors, preferably position sensors, tilt sensors, acceleration sensors and / or angle sensors.

11. The mobile aerial work platform (1) according to one of the preceding claims, wherein the work platform module (3) comprises a cabin (202) and can be collapsed.

12. The mobile aerial work platform (1) according to one of the preceding claims, wherein the aerial work platform (1) can be controlled via a computer controller.

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