CONSTRUCTION VEHICLE

Description

[0001] A modular construction vehicle is known from CN 102502431 and US 8,954,237.

[0002] CN 102 502 431 A discloses a construction vehicle consisting of two detachably connected drive modules. Each of these modules has at least one driven axle, with at least one of the two drive modules having an axle with steerable wheels. The construction vehicle also includes at least one cabin module and a control unit connected to the cabin module for the two drive modules. The drive modules are connected to each other via a first mechanical connection device. The cabin module is connected to the front drive module.

[0003] The present invention aims to create a construction vehicle, particularly for tunnel construction, which is suitable for moving under the narrow and uneven conditions of tunnel construction and for serving as a carrier of loads, such as tunnel formwork elements or building materials.

[0004] This problem is solved by a construction vehicle with the features of claim 1. Advantageous further developments of the invention are the subject of the dependent claims.

[0005] For this purpose, the construction vehicle has two detachably connected drive modules, each with at least one driven axle and steerable wheels. In the confined spaces of a tunnel, one axle per drive module will generally suffice. However, for tunnels that are already largely completed and for transporting very heavy loads, at least one of the drive modules may have multiple axles. It is sufficient for one of the two drive modules to have steerable wheels. However, to improve cornering and maneuverability, it is preferable for both drive modules to have steerable wheels.

[0006] Furthermore, the construction vehicle consists of at least one cabin module that can be connected to each of the two drive modules. Preferably, the construction vehicle has a cabin module at each of its two longitudinal ends and is therefore able to travel in both directions and be driven from a front cabin. The conventional concepts of forward and reverse are thus irrelevant for this construction vehicle, because it is largely mirror-symmetrical about its midpoint, i.e., about a plane running transversely to the vehicle's longitudinal axis at the midpoint of its length. The construction vehicle also has a control system for the two drive modules, which controls both the power and the steering angle of the two drive modules, preferably independently of each other. The control system is connected to the at least one cabin module, so that the vehicle can be operated from the cabin module.If cabin modules are arranged at both longitudinal ends, the control system is naturally connected to both cabin modules. In this case, a priority circuit is preferably provided.

[0007] which assign control to only one of the two cabin modules, occupied by a driver. However, it is also possible, particularly when driving in tight curves, for the steering angle of the assigned drive module to be controlled from the assigned cabin, thus requiring two people for maneuvering: one in the cabin at the front (in the direction of travel) and one in the cabin at the rear (in the direction of travel). These two people can then optimally control their steering axis and the lateral and vertical position of their cabins, enabling the construction vehicle to navigate extremely tight curve radii, for example, as small as 5 meters. It should be added that the two drive modules are heavy-duty modules with a load-bearing capacity of several tons. Preferably, the entire construction vehicle, consisting of the two interconnected drive modules, has a payload of 20 to 40 tons.The two drive modules can be connected either directly or via a central module, depending on the intended use. A first connection device is provided for this purpose. A second mechanical connection device is designed to connect the cabin modules to the longitudinal ends of the respective drive modules. This second device can be identical to the first connection device, but it can also differ, for example, if it includes hydraulic and electrical coupling devices to ensure that the cabin module can be controlled from the cabin at the same time as the cabin module is connected. Such electrical and / or hydraulic coupling can, of course, also be achieved via the first mechanical connection device, allowing, for example, both drive modules to be controlled from the cabin of a single cabin module.

[0008] In principle, it is possible for the two drive modules to be identical. However, it is preferable for the two drive modules to perform different functions. For example, one of the two drive modules, designed as a service module, could house the electrical and / or hydraulic supply for the construction vehicle. The other drive module could then contain more drive-related components. Such a division is advantageous because the corresponding assemblies are sometimes very large, and distributing the components across both drive modules would complicate the hydraulic and / or electrical supply.

[0009] In an advantageous embodiment of the invention, the at least one cabin module includes a support frame with an adjustment mechanism for the horizontal and / or vertical position of the cabin within the cabin module. This has the advantage that both the vertical and lateral position of the cabin on the cabin module can be adjusted. For example, in tight curves, the cabin can be shifted laterally relative to the inner radius of the curve so that it does not collide with a building element that defines the outer radius of the curve. Furthermore, the height adjustability of the cabin offers the advantage of improved visibility of the loading and unloading situation, particularly during loading and unloading operations. Even on very hilly terrain, the height adjustability of the cabin can improve ground clearance, enabling the construction vehicle to move even on very uneven ground.

[0010] The positioning mechanism for the cabin on the cabin frame preferably comprises a slide that is movable on a horizontal guide extending transversely to the vehicle axis, wherein a height adjustment mechanism is arranged on the slide, on which the cabin is held in a height-adjustable manner. Such a positioning mechanism is easy to implement and robust, especially under the harsh conditions of tunnel construction, where there is usually a lot of dust in the air.

[0011] In an advantageous embodiment of the invention, the control unit includes a unit for coordinated steering of the wheels and lateral positioning of the cabin depending on the inputs of a control element arranged in the at least one cabin and / or depending on distance sensors of the control unit. The operator of the construction vehicle can, for example, select the turning radius down to a minimum turning radius using a control element such as a steering wheel or a joystick, whereby, as the turning radius decreases, the cabins are automatically repositioned laterally to achieve a

[0012] To prevent the cabin from colliding with objects on the outer curve radius, alternative or additional distance or position sensors can be installed at the ends of the construction vehicle. These sensors detect the geometry of the construction site in the direction of travel and can thus independently determine the curve radius, automatically adjusting the steering angle and cabin position based on the sensor signals. However, these sensors can also serve purely as an aid for the operator of the construction vehicle.

[0013] As mentioned above, the construction vehicle preferably has a cabin module at each of its longitudinal ends, allowing it to be operated equally well forwards or backwards from a front cabin. The vehicle then no longer has a front and a rear; instead, the front and rear are determined by the vehicle's direction of travel. This has the advantage that in narrow tunnels, where turning the vehicle is impossible, the vehicle can be easily driven out of the tunnel after loading or unloading, simply by controlling it from the cabin that was previously located at the rear.

[0014] It is generally sufficient for one of the two drive modules to have steerable wheels. Preferably, however, both drive modules have steerable wheels, which considerably improves the minimum turning radius and the maneuverability of the construction vehicle, since the wheels of the axles of both drive modules can be steered in opposite directions.

[0015] If both drive modules have steerable wheels, the steering angle of the wheels of one drive module is preferably controllable independently of the steering angle of the wheels of the other drive module. This enables driving through very tight curves with opposite steering angles, as well as lateral offset driving when the wheels of both drive modules are steered in the same direction. The maneuverability afforded by this type of independent steering thus allows the construction vehicle to be used in areas where construction vehicles of this size could not previously be used.

[0016] Preferably, the cabin of at least one cabin module is equipped with a control system for the steering axles of both drive modules, allowing both steering axles to be controlled from a single cabin. Under very difficult conditions, it is also possible for both end cabin modules to be occupied, with the drivers controlling only the steering axle of their own drive module, thus enabling maneuvering even in very challenging situations.

[0017] In an advantageous embodiment of the invention, the drive modules have an approximately cuboid chassis whose height is less than their width and length. While the width of the construction vehicle is preferably between 2 and 4 m, the length can be varied by means of a central module, as will be explained later, so that the overall length, including two cabin modules, can vary between 8 m and 16 m. The height of the chassis is preferably between 1.50 m and 2.50 m, particularly around 2 m, which makes it possible to place loads on the chassis without the overall height, including the loads placed on the chassis, becoming so high as to prevent entry into a tunnel area. In this case, the top of the chassis is preferably flat, and the height of the two drive modules is identical, so that the tops of the two drive modules form a large, elongated support structure.

[0018] Preferably, the first and / or second connection device is formed by horizontally extending tongue-and-groove connections as follows. The grooves are formed by slots on the end faces of the main supports of the drive modules, in particular by adjacent double slots with a certain vertical extent. The complementary spring elements are formed by two adjacent, end-projecting engagement plates on the module to be connected, e.g., the central module or the cabin module, which extend into the complementary slots on the end faces of the main supports of the drive modules and are secured there, e.g., by locking bolts.These main beams, preferably two running side by side in the drive module, preferably have a higher vertical extent than horizontal extent perpendicular to the direction of travel, thereby achieving a high stiffness in the load direction of the construction vehicle.

[0019] The connection position of the tongue and groove joints is preferably achieved by locking bolts that engage in aligned recesses in the main supports of the drive modules and in the engagement plates of the other modules, thus creating a rigid connection between the two modules to be joined. The overall complexity of the equipment can be reduced if the first and second connection devices are identical, so that ultimately all modules—that is, the drive modules, the cabin modules, and subsequently mentioned other modules such as lifting modules or crane modules—can be rigidly and securely coupled to one another by means of an identical connection device.

[0020] In an advantageous embodiment of the invention, at least one of the two drive modules has independently suspended wheels and / or individually driven wheels. Independent wheel suspension and individual drive for each wheel, i.e., all-wheel drive for the entire construction vehicle, significantly improve maneuverability on uneven terrain and under difficult driving conditions.

[0021] Preferably, the construction vehicle has a central module that can be connected between the two drive modules, and this central module preferably includes support plates for transporting heavy loads. The central module thus has purely mechanical functions, namely the coupling of the two drive modules and the provision of support plates for heavy loads. For example, tunnel formwork elements can be placed on this central module. As already mentioned, the construction vehicle has a load capacity of, for example, 32 tons. It can be provided, in particular, that the construction vehicle has central modules of different lengths, thereby allowing the overall length of the vehicle and, of course, the size of the support surface to be varied. The construction vehicle can thus be precisely adapted to the specific requirements of tunnel construction or any other type of construction project.

[0022] In an advantageous embodiment of the invention, the construction vehicle has a lifting module with vertical hydraulic support cylinders for connecting the cabin module and the drive module. Thus, in a symmetrical design of the construction vehicle with two cabin modules, such lifting modules are provided at each of the two longitudinal ends between the drive modules and the cabin modules, so that containers or standardized support elements can be lifted by means of the hydraulic support cylinders. The lifting module can also be integrated into the cabin module.

[0023] In a further advantageous embodiment of the invention, the construction vehicle has a crane module with at least one hydraulically actuated, pivoting support arm for connecting the cabin module on the one hand and the drive module or the lifting module on the other. Such a crane module can thus be arranged at both longitudinal ends of the construction vehicle between the respective drive module and the cabin module or lifting module, resulting in a parallel support arm structure through the two crane modules, which enables the lifting of tall and heavy loads. For this purpose, each crane module preferably has laterally extendable support cylinders for bracing against the ground to prevent the construction vehicle from tipping over when lifting very heavy loads laterally. The crane module can optionally also be integrated with the lifting module and / or the cabin module.

[0024] Preferably, the chassis of the drive modules extend vertically upwards at their end faces facing the central module. Preferably, the central module then has vertically upward-projecting stiffening struts that bear against the vertical end faces of the drive modules, thereby achieving high stiffness in the load direction (from above).

[0025] It goes without saying that the construction vehicle can be used not only for tunnel construction, but also for bridge construction and other construction projects in tight and difficult conditions.

[0026] The following terms are used synonymously: modules - drive modules, cabin modules, lifting modules, crane modules; vehicle longitudinal axis - direction of travel; first connecting device - second connecting device - connecting device; It is obvious to the person skilled in the art that the embodiments of the invention described above can be combined with each other in any way, as long as they do not contradict each other.

[0027] The invention is described below, for example, with reference to the schematic drawing. This drawing shows: Fig. 1 a perspective view of a construction vehicle with two drive modules, two cabin modules and a central module for connecting the drive modules, Fig. 2 an exploded view of the construction vehicle made of Fig. 1 with a more detailed representation of the connection device between the drive modules and the central module as well as between the drive modules and the cabin modules, Fig. 3 a side view of the construction vehicle from the Fig. 1 and 2 , Fig. 4 a perspective detail of the second connecting device for attaching the cabin module to the drive module, which second connecting device in the exemplary embodiment of the Fig. 1 and 2 identical to the first connecting device, Fig. 5 is a perspective view of a drive module from an oblique angle above from the longitudinal end, Fig. 6 is a perspective view of the drive module from Fig. 5 From a low angle, Fig. 7 shows a perspective view of a drive module designed as a service module; from a low angle, Fig. 8 shows a front view of the drive module. Fig. 6 and 7Viewed from the longitudinal end, Fig. 9 a perspective view of a central module for connecting the two drive modules, Fig. 10A a side view of a short central module, Fig. 10B a side view of a long central module to achieve a longer construction vehicle, Fig. 11 a front view of the cabin module with integrated lifting module, Fig. 12 a perspective view of the cabin module made of Fig. 12 from a slightly oblique angle from the front, and Fig. 13 a perspective view of the cabin module from the Fig. 11 and 12from a slant above rear, Fig. 14 an image to illustrate the lateral cabin offset of the construction vehicle from the preceding figures in a tight curve, Fig. 15 an image to illustrate the operation of the lifting modules integrated into the cabin modules, Fig. 16 an image to illustrate the carrying of tunnel formwork elements on the support plates on the cabin module and on the central module, Fig. 17 an image to illustrate an embodiment with a slewing crane module on both cabin modules, and Fig. 18 an image to illustrate a slewing crane module on a cabin module with integrated support hydraulics.

[0028] The Fig. 1 bis 3 Figure 10 shows a construction vehicle 10 consisting of a first drive module 12 and a second drive module 14, which are coupled to each other via a central module 15. At their longitudinal ends, both drive modules 12, 14 have a cabin module 16a, 16b, so that the construction vehicle 10 can drive in both directions with front steering.

[0029] Each of the two drive modules 12, 14 contains a wheel axle with individually driven and steerable wheels 13, so that the construction vehicle is an all-wheel-drive vehicle with two steerable axles, which can preferably also be controlled independently of each other. In this way, it is possible to drive on very small curve radii or to drive laterally offset, provided that the wheels of both drive modules 12, 14 have the same steering angle. However, at least one of the drive modules can also have multiple wheel axles.

[0030] Each of the two drive modules 12, 14 contains a cuboid chassis 34 whose height is less than its width and length. The upper surface 29 of the chassis 34 of each drive module 12, 14 is thus located at a height of preferably about 2 m, while each drive module 12, 14 preferably has a width between 1.8 m and 3 m and a length of 2 m to 5 m. Taking into account the cabin modules 16a, 16b, the overall length of the vehicle is therefore between 10 m and 18 m, depending on the length of the central module and on the cabin modules being equipped with additional lifting or crane modules.

[0031] It is of course possible to design the two drive modules 12, 14 identically. In the present case, however, the first drive module 12 is designed as a service module and has an electrical and hydraulic supply for the construction vehicle 10, while, for example, the second drive module 14 may contain more drive or control components. Each drive module 12, 14 has a wheel axle with steerable wheels 13.

[0032] Each cabin module 16a, 16b has a cabin 20 that can be moved transversely to the vehicle's longitudinal axis on a horizontal slide guide 18. The cabin 20 is held on a slide of the slide guide in a height-adjustable manner via a height-adjustment mechanism 22, so that the cabin 20 can be moved laterally as well as vertically relative to the drive modules 12, 14. This makes it possible to navigate tight curves or very rough terrain with the construction vehicle 10.

[0033] Furthermore, each cabin module 16 a, 16b has an integrated lifting module 24 with two external vertical lifting cylinders 26 a, b, so that the construction vehicle 10 is provided with four vertical hydraulic lifting cylinders 26 a, b in a rectangular configuration, by means of which heavy containers or lifting platforms can be lifted and lowered. The lifting module 24 can also be configured separately from the cabin module 16 a, b and likewise be connected to it via a first / second connection device.

[0034] The central module 15, as shown in the exploded view of the construction vehicle in Fig. 2 As can be seen more clearly, support plates 28 are used to place heavy loads. Furthermore, the end faces 27 of the chassis 29 of the drive modules 12, 14 facing the central module 15 are vertical. The central module 15 is supported on these end faces 27 by vertically projecting stiffening struts 17, thereby improving the overall rigidity of the construction vehicle 10. The support plates 28 of the central module, especially in conjunction with the support plates 25 of the cabin modules 16a, 16b, thus create low-lying supports for transporting particularly heavy loads in tunnel areas, e.g., formwork elements ( Fig. 17 It should be taken into account that the support plates 28 of the central module and the support plates of the cabin modules 16a, 16b are arranged significantly lower than the top 29 of the chassis 34 of the two drive modules 12, 14, e.g. at a height of about 1 m, so that the loads carried do not protrude upwards so high, which is particularly important under confined tunnel conditions.

[0035] Fig. 3 The construction vehicle shows according to Fig. 1 In side view. It can be clearly seen here that in the cabin modules 16a,b, a low-lying support surface 25 is formed between the horizontal slide 22 and the lifting module 24, which is at the same height as the support plates 28 of the central module 16. In this way, a very low support is formed for formwork parts and other building components to be transported, which means that the overall height of the construction vehicle 10 with loaded parts does not become too high.

[0036] Fig. 3 The figure also clearly shows the provision of end-facing vertical support struts 17 on the central module 15, which abut the vertically facing end walls 27 of the two drive modules 12, 14 and thus ensure high stiffness and torsional rigidity even when subjected to high loads. Fig. 5 This component is further illustrated in the exploded view.

[0037] Fig. 2 and 4 The connecting device 36 between the drive modules 12, 14, the cabin modules 16a, 16b and the central module 15 is shown more clearly.

[0038] Each drive module 12, 14 has two longitudinal beams 38a, 38b arranged side by side (see in particular the Figuren 7 and 8), which are connected to each other via the support strut 39 of the wheels 13 and thus form the main support and therefore the support frame of the drive modules 12, 14. These two longitudinal beams 38a, 38b extend from the inner end face 27 to the outer end face 30 of the drive modules 12, 14.

[0039] At their end faces, the longitudinal beams 38a, 38b have two horizontally arranged slots 40a, 40b extending in the longitudinal direction of the vehicle. The slots 40a, 40b are thus open at the end faces of the longitudinal beams 38a, 38b and therefore serve as grooves for the tongue-and-groove connection device 36.

[0040] On the opposite side, the central module 15 and the two cabin modules 16a, 16b each have two projecting engagement plates 42a, 42b on their sides opposite the slots. These plates engage snugly and positively in the slots 40a, 40b at the ends of the longitudinal beams 38a, 38b. This creates a fixed and rigid mechanical connection between the drive modules 12, 14 on the one hand and the central module 15 and the cabin modules 16a, 16b on the other. In the connected position, the engagement plates 42a, 42b are almost completely engaged in the slots 40a, 40b. This connected position of the mechanical connection device 36 is then secured for each longitudinal beam 38a, 38b by an upper locking pin 46o and a lower locking pin 46u.In the connected position, these two locking pins 46o, 46u penetrate the aligned upper and lower horizontal recesses 43o, 43u in the longitudinal beams, as well as corresponding recesses 44o, 44u in the engagement plates 42a, 42b. The recesses 43o, 43u in the longitudinal beams 38a, 38b, as well as the recesses 44o, 44u in the engagement plates 42a, 42b, are aligned in the connected position and can then be penetrated by the two locking pins 46o, 46u, thus placing the connecting device 36 in a secured connected position.

[0041] Fig. 4 Figure 1 shows the design of the first connecting device 36 between the drive module 12, 14 and the cabin module 16a, 16b, which first connecting device in the exemplary embodiment is designed identically to the second connecting device 36 between the drive module 12, 14 and the central module 15.

[0042] Fig. 5 Figure 1 shows in perspective view the outer end face 30 of a drive module 12, 14 with the associated parts of the connecting device 36, namely central carriers 38a, 38b of the drive modules 12, 14 having two slots 40a, 40b each for connection with the cabin module 16 a,b as well as the upper and lower horizontal recesses 43o, 43u in the longitudinal carriers for the locking pins 46o, 46u ( Fig. 4 ) for the connection position of the connecting device 36. Further shown is the design of the drive modules 12, 14 with a cubic chassis 34, which surrounds all essential elements, namely drive elements, hydraulic and electrical elements 49 or the electrical and hydraulic supply 51 of the drive module 12, 14 in a dust- and dirt-proof manner, wherein the chassis 33 forms a flat surface 29 which is at a relatively low height, so that transported loads can be transported at a very low height level, which is necessary under confined tunnel construction conditions.

[0043] Fig. 6 Figure 1 shows the first drive module 12 in a perspective view from below at an angle, specifically from the central end face 27. It is clearly visible that the longitudinal beams 38a,b extend over the entire length of the drive module 12, 14 and thus project to the two end faces 27, 30 of the drive module 12, 14. The two longitudinal beams 38a, 38b are connected to each other by a support strut 39 for the wheels 13. At the longitudinal ends of the longitudinal beams 38a, 38b, there are two slots 40a, 40b for the engagement plates 42a, 42b of the cabin modules 16a, 16b ( Fig. 13 ) and the central module 15 ( Fig. 9 The two wheels 13 are steerable via a corresponding steering mechanism 48. The chassis 34 provides space for the accommodation of drive and control components 49.

[0044] In an analogous way, it shows Fig. 7 a slanted perspective view from below of the second drive module 14 also with steering mechanism 48 for the two wheels 13, wherein this second drive module 14 is designed as a service unit which houses the electrical and hydraulic supply 51 of the construction vehicle in the chassis 34 in a dirt-proof manner.

[0045] Fig. 8 shows the front view of a drive module 12, 14 with the drive module-side part of the connecting device 36, which is formed by the slots 40a, 40b, which are connected to projecting engagement plates 42 a,b of the central module 16 ( Fig. 10 ) or the cabin module ( Fig. 14 ) interlock or comb and are secured in their interlocked connection position by the locking bolts 46o, 46u.

[0046] Fig. 9 Figure 1 shows the basic structure of the central module 15. The central module consists of two main beams 19a, 19b running longitudinally along the construction vehicle, which are aligned with the longitudinal beams 38a, 38b of the drive modules 12, 14. On the two end faces of the main beams 19a, 19b, two projecting engagement plates 42a, 42b are arranged as the central module-side part of the connecting device 36. In the connected position of the connecting device 36, these plates penetrate the slots 40a, 40b of the drive modules on both end faces. This connected position is secured by means of locking bolts 46o, 46u ( Fig. 4 ) secured, which penetrate the aligned recesses 43o, 43u of the drive modules 12, 14 and the corresponding recesses 44o, 44u of the central module or the cabin module.

[0047] Fig. 10a und Fig. 10b The figures show two different central modules 15a, 15b with different lengths of the main beams 19a, 19b, so that depending on the loads to be transported, a longer wheelbase between the two drive modules 12, 14 and thus a different overall length of the construction vehicle 10 results.

[0048] Fig. 11 , 12 and 13 Cabin modules 16a and 16b are shown in more detail.

[0049] The square directional arrow in Fig. 11 indicates that the cabin 20 is attached to the horizontal guide 18 and via the height adjustment mechanism 22 ( Fig. 13 ) is adjustable both laterally, i.e. perpendicular to the direction of travel of the construction vehicle 10, and in height. Fig. 13 The figure also shows a steering wheel 50 and foot pedals 52 for actuating the motor of the drive modules 12, 14, which is preferably designed as a heavy-duty diesel engine, as well as for steering the drive modules 12, 14. In principle, both drive modules 12, 14 can have their own drive, or alternatively, only one of the two drive modules 12, 14 has a drive motor and couples the drive energy to the second drive module via a shaft. This is clearly visible in the Fig. 11 bis 13 The design of the lifting module 24 also consists of a support structure running transversely to the longitudinal axis of the vehicle, at whose two longitudinal ends vertical support cylinders 26a,b are arranged, so that a total of four of these support cylinders 26a, 26b are formed by both cabin modules 16a, 16b at the two ends of the construction vehicle 10, which are able to lift containers and heavy support platforms ( Fig. 15 and 18) and thus to transport. It should be taken into account here that the lifting module 24 can also be designed as a separate module, which can be connected to the cabin module 16a, 16b in the same way as a drive module 12, 14 via the connecting device 36. In this case, a slot arrangement 40a, 40b must be provided on the other side of the lifting module 24, as shown in the Fig. 4 bis 8 is formed at the ends of the longitudinal beams 38a, 38b of the drive modules 12, 14.

[0050] The image from Fig. 14 The lateral movement (see arrow) of the cabin 20 along the horizontal slide guide 18 to the inner radius of a tight curve significantly reduces the turning radius of the construction vehicle.

[0051] Fig. 15 Figure 1 shows the operation of the vertical lifting cylinders 26a, 26b for lifting and lowering heavy loads, in this case a support frame for building materials. The operation of the vertical lifting cylinders 26a, 26b can be controlled via a remote control 55, possibly even when the engine of the construction vehicle 10 is switched off.

[0052] Fig. 16 Figure 25 shows the importance of the low-lying support plates 25 of the cabin modules and 28 of the central module for transporting tunnel formwork elements 56. Due to the low support plates 25, 28, the tunnel formwork elements do not protrude as high, which can be crucial for the accessibility of a lower tunnel area.

[0053] Fig. 17 Figure 1 shows a slewing crane module 58 which is arranged on the cabin module 16a, 16b between the lifting module 24 and the horizontal slide guide 24. Here, a slewing crane module 58 with a swivel arm 61 that pivots transversely to the longitudinal axis of the vehicle is arranged on each cabin module 16a, 16b, so that heavy loads, such as a construction container 59, can be lifted onto the tops 29 of the chassis 34 of the drive modules 12, 14 by means of the swivel arms 61 of the two slewing crane modules 58 on both sides of the drive modules 12, 14 and lifted down and set down from there.

[0054] Alternatively, according to Fig. 18 A rotary crane module 60 may be arranged on each cabin module 16a, 16b, or, in the illustrated embodiment, only on one cabin module 16b, or between the cabin module 16a, 16b and the drive module 12, 14. This rotary crane module includes a rotatable multi-section lifting arm 63 and a support device 62 with vertical support cylinders 64. Using the rotary crane module 60, loads can be lifted from both sides of the construction vehicle 10 either onto the top surface 29 of the chassis 34 of the drive modules 12, 14, or onto a support frame 54 for building materials, which is supported on the vertical support cylinders 26a, 26b of the lifting modules 24.

[0055] The invention is not limited to the illustrated embodiment, but can be varied within the scope of the claims. It should be noted again that the cabin module 16a, 16b can integrate both the lifting module 24 and the jib crane module 58 and / or the slewing crane module 60, optionally with a lateral support device 62. These modules 24, 58, 60 can, however, also be designed separately from the cabin module 16a, 16b and connected to the drive modules 12, 14 via the connecting device 36. The modular system of the construction vehicle 10 of the present invention allows for a highly customized configuration of the construction vehicle according to the requirements prevailing at the tunnel or construction site and thus offers a tailor-made solution for all encountered requirements. Bezugszeichenliste:

[0056] 10 Construction vehicle 12 First drive module 13 Wheels of the drive modules 14 Second drive module 15 Central module for connecting the two drive modules 16a, b Cabin modules 17 Vertical stiffening struts of the central module for contact with the vertical end faces of the drive modules 18 Horizontal carriage guide transverse to the direction of travel 19a, b Main support of the central module 20 Vehicle cabin 21a, b Crossbeam of the central module for supporting the support plates 22 Height adjustment mechanism for the vehicle cabin on the carriage of the carriage guide 24 Lifting module with two vertical hydraulic support cylinders, possibly integrated with cabin module 25 Support surface for loads on the cabin module between lifting module and horizontal carriage 26a,b Vertical hydraulic support cylinders of the lifting module 27 Mutually facing vertical end faces of the chassis of the drive modules 28 Load support plates on the central module 29 Top of the chassis of the drive modules 34 Chassis of the drive modules 36 Connecting device between the modules in the form of a tongue and groove system 38a, or central longitudinal beams of the drive modules, extending to both end faces 39 Support strut for the wheels, which connects the longitudinal beams and forms with them the main beam of the drive modules 40a, b Slots at both ends of the longitudinal beams of the drive modules as a groove part of the connecting device 42a, b Projecting engagement plates intended for engagement in the slots on both opposite end faces of the central module and on one end face of the cabin module 43o, upper and lower recesses in the ends of the longitudinal beams oriented horizontally and transversely to the vehicle's longitudinal axis 44o, upper and lower Recesses in the working plates,46o, which are aligned with the recesses in the longitudinal beams in the connected position; upper and lower locking pin for engaging the upper and lower recesses respectively; 48 Steering mechanism for the wheels of the construction vehicle; 49 Drive and control components in one of the two drive modules of the construction vehicle; 50 Control unit in the cab, connected to the control system of the construction vehicle, here steering wheel or joystick; 51 Electrical and hydraulic supply of the construction vehicle; 52 Control unit in the cab, connected to the control system of the construction vehicle.54 Foot pedals 55 Support frame for building material 56 Remote control for the lifting module and / or the jib crane module or the slewing crane module 56 Tunnel formwork elements 58 Laterally swiveling jib crane module 59 Construction container 60 Slewing crane module 61 Swivel arm of the jib crane module 62 Laterally extendable hydraulic support device of the jib crane module or slewing crane module 63 Rotating multi-section support arm of the slewing crane module 64 Vertical hydraulic support cylinders of the support device

Claims

1. Construction vehicle (10) comprising - two detachably connected drive modules (12, 14), each of which has at least one driven axle, wherein at least one of the two drive modules (12, 14) has an axle with steerable wheels (13), - at least one cabin module (16a, 16b) that can be connected to each of the two drive modules (12, 14), and - a control system for the two drive modules (12, 14) connected to the at least one cabin module (16a, 16b), wherein the drive modules (12, 14) have a first mechanical connection device (36) via which they are connected to each other, and wherein the cabin module (16a, 16b) is connected to any one of the two drive modules (12, 14) via a second mechanical connection device (36).

2. Construction vehicle (10) according to claim 1, characterised in that one of the drive modules (12, 14) is designed as a service module, which has an electrical and / or hydraulic supply (51) for the construction vehicle (10).

3. Construction vehicle (10) according to claim 1 or 2, characterised in that a cabin (20) of the at least one cabin module (16a, 16b) is held on the side of the latter in a movable manner, in particular in that the cabin module (16a, 16b) has a horizontal slide guide (18) for the horizontal position of the cabin (20) of the cabin module (16a, 16b).

4. Construction vehicle (10) according to claim 3, characterised in that the cabin (20) is held on the cabin module (16a, 16b) in a height-adjustable manner, in particular by means of a height adjustment mechanism (22) on the horizontal slide guide (18) of the cabin unit (16a, 16b).

5. Construction vehicle (10) according to claim 3 or 4, characterised in that the control system has a unit for coordinated steering of the wheels (13) and lateral positioning of the cabin (20) depending on the inputs of a control element (50, 52) arranged in at least one cabin and / or depending on distance sensors of the control system.

6. Construction vehicle (10) according to one of the preceding claims, characterised in that it has a cabin module (16a, 16b) at each of its two longitudinal ends.

7. Construction vehicle (10) according to one of the preceding claims, characterised in that both drive modules (12, 14) have steerable wheels (13) and the steering angle of the wheels (13) of one drive module (12, 14) can preferably be controlled independently of the steering angle of the wheels (13) of the other drive module (14, 12).

8. Construction vehicle (10) according to one of the preceding claims, characterised in that at least one control device (50) for the steering axles of the two drive modules (12, 14) is arranged in the cab (20) of the at least one cab module.

9. Construction vehicle (10) according to one of the preceding claims, characterised in that the drive modules (12, 14) have an approximately cuboid chassis (34) whose height is less than its width and length.

10. Construction vehicle (10) according to claim 9, characterised in that the upper side (29) of the chassis (34) is flat and the height of the two drive modules (12, 14) is identical.

11. Construction vehicle (10) according to one of the preceding claims, characterised in that the first and / or second connecting devices (36) for connecting the modules (12, 14, 15, 16a, 16b) are formed by positive connections (40a, b, 42a, b) of the tongue and groove type.

12. Construction vehicle (10) according to claim 11, characterised in that the connecting device (36) on the drive modules (12, 14) in particular on its longitudinal beams (38a, 38b), comprises end slots (40a, 40b) which are penetrated by projecting engagement plates (42a, 42b) on the cabin module (16a, 16b) or central module (15) in a connection position.

13. Construction vehicle (10) according to claim 12, characterised in that the connection position is secured by locking bolts (46o, 46u).

14. Construction vehicle (10) according to one of the preceding claims, characterised in that the first connecting device (36) and the second connecting device (36) are identical.

15. Construction vehicle (10) according to one of the preceding claims, characterised in that at least one of the two drive modules (12, 14) has individually suspended wheels (13) and / or individually driven wheels (13).

16. Construction vehicle (10) according to one of the preceding claims, characterised in that it has a central module (15) which connects the two drive modules (12, 14), which central module (15) preferably has support plates (28) for transporting heavy loads.

17. Construction vehicle (10) according to claim 16, characterised in that it has several central modules (15a, 15b) of different lengths, which can be connected alternatively to the drive modules (12, 14) in order to change the overall length of the construction vehicle (10).

18. Construction vehicle (10) according to one of the preceding claims, characterised in that it has a lifting module (24) with vertical hydraulic support cylinders (26a, 26b) for connection between the cabin module (16a, 16b) and the drive module (12, 14).

19. Construction vehicle (10) according to claim 18, characterised in that the lifting module (24) is integrated into the cabin module (16a, 16b).

20. Construction vehicle (10) according to one of the preceding claims, characterised in that it has a crane module (58; 60) with at least one hydraulically pivotable support arm (61; 63) for connection between the cabin module (16a, 16b) on the one hand and the drive module (12, 14) or the lifting module (24) on the other hand, wherein the crane module (58; 60) may be integrated with the cabin module (16a, 16b).

21. Construction vehicle (10) according to claim 20, characterised in that the crane module (58; 60) has a laterally extendable support device (62) for support on the ground.