Self-propelled construction machine with a cabinless cab

Abstract

The utility model relates to a self-propelled engineering machinery with a cabinless bridge. At least one heating element is present in the cabinless bridge, which comprises at least one heating device and a heating area that can be heated by means of conductive heat transfer from the heating device, in order to provide a heating option for an operator located in the bridge.

Description

Technical Field

[0001] This utility model relates to a self-propelled engineering machine with a cabinless driver's cab. Background Technology

[0002] Construction machinery is frequently used in external areas, such as within highway construction and / or earthmoving projects. This machinery is typically self-propelled and therefore moves by its own drive system during both travel and work operations. For this purpose, construction machinery may have a primary drive unit, such as an internal combustion engine and / or an electric motor, through which the driving energy required for the machinery's travel and work operations is provided. Operation of the construction machinery can be performed from a driver's cab. The operator of the construction machinery can be located in the driver's cab and from there input operating commands or control the machinery, for example, via inputs at one or more operating elements.

[0003] It is known that the cab of such construction machinery is enclosed by a so-called cockpit. The cockpit has an enclosed interior space facing the external environment and is, for example, temperature-regulating. However, the cockpit also has disadvantages, such as increased production costs for the construction machinery and, in some cases, significantly increased transportation costs. Therefore, construction machinery with cockpits without cabins is also frequently used in practice. In the current sense, a cockpit without cabins is a cockpit that is not completely enclosed by a cab. A cockpit without cabins can therefore include one or more weather protection elements, such as a cockpit roof, front window, rear window, and / or particularly semi-high side walls. However, such a cockpit usually does not provide complete weather protection for the operator on the cockpit. Even though such a cockpit without cabins is at least partially accompanied by potentially reduced operating comfort, such a cockpit without cabins is still popular even among the operators themselves because it allows, for example, relatively direct communication with other operators in the surrounding environment of the construction machinery.

[0004] However, especially in relatively low ambient temperatures, working in a cabinless bridge can be uncomfortable for the operator because wall elements (if present) do not provide effective protection against the low temperatures. In this case, hot air blowers have been described in the prior art, which blow a stream of hot air, heated, for example by waste heat from the motor, into the area of ​​the cabinless bridge. However, such hot air blowers are not only extremely inefficient, but the constant airflow accompanying these heating devices is also often perceived as uncomfortable. Utility Model Content

[0005] Therefore, the objective of this invention is to provide a feasible solution for improving the operator's stay in the cabinless cab of engineering machinery under low external ambient temperatures.

[0006] The task is solved by a self-propelled engineering machine with a cabinless driver's cab according to the present invention.

[0007] The self-propelled construction machinery according to this invention therefore includes a cabinless cab. In other words, this means that the cab does not have a shell completely surrounding it and therefore does not include an internal cabin space isolated from the external environment. The operator located inside the cab is at least partially directly exposed to the external environmental conditions of the construction machinery. This does not mean that a cabinless cab cannot have weather protection devices at all. Basically, the construction machinery does not include an enclosed cab.

[0008] Self-propelled construction machinery may have a frame as the primary load-bearing structure. Supplementally or alternatively, the machinery may include a running gear, such as wheels, chain-driven mechanisms, and / or Walzbandagen. The machinery may have a primary drive unit that provides the driving energy required for its travel and operational operation. This may include, for example, an internal combustion engine and / or an electric motor. The machinery may also include multiple such motors.

[0009] In addition, or alternatively, the construction machinery may have one or more working devices, particularly for processing ground surfaces. This may, for example, involve one or more rollers that can compact and / or level the ground, one or more milling rollers that can mill the ground and / or mix one or more additives with the ground, or paving slabs that can distribute, compact, and level building materials (e.g., asphalt) on the ground surface.

[0010] The cab refers to the area of ​​a construction machine in which the operator remains during the machine's travel and / or working operations. This can be specified as follows: the cab may be positioned, for example, between the front and rear traveling units in the direction of travel, as is often the case in road milling machines and rollers. Alternatively, the cab may be positioned in the rear area along the direction of travel or at the height of the rear traveling unit, as is possible in road milling machines and graders. Referring here to a grader, this can also be understood in relation to a so-called feeder, which, instead of the typical slabs for a grader, may have a conveying device and is generally used in combination with one or more graders.

[0011] A cab may include a cab bottom having a standing surface. Therefore, the cab bottom generally refers to the vertically lower outer surface of the cab and can at least partially serve as a standing surface for the operator located within the cab, for example, during driving and / or operational operations. The cab bottom may be constructed substantially flat. Ideally, the cab bottom may be constructed as a continuous surface. The standing surface refers to the area of ​​the cab bottom where the operator located within the cab can stand, or where the soles of the shoes worn by the driver can rest on the cab bottom from the operating position.

[0012] The control panel may have at least one operating device for inputting operating or control presets by an operator located within the control panel. This operating device may have one or more operating elements, such as one or more switches and / or joysticks and / or steering wheels and / or touchscreens. The one or more operating elements may be arranged in groups, for example, in the form of a control panel with multiple operating elements. The operating device may include multiple such groups of operating elements, such as a right-side group and a left-side group, wherein each of these at least two groups of operating elements enables—particularly—full—operation of the construction machinery.

[0013] The bridge may include one or more protective devices or limits on different sides of the bridge, but it is by no means completely enclosed in the sense of a cockpit. Thus, the bridge may, for example, be vertically limited by a weather-protected canopy. Moving forward in the direction of travel, the bridge may have one or more windshields or front windows, and / or, looking backward in the direction of travel, the bridge may have one or more rear windows. These may extend vertically to the weather-protected canopy. On the right and / or left sides, viewed in the direction of travel of the construction machinery, the bridge may be limited by one or more sidewalls and / or railings—particularly extending vertically and approximately hip-height—particularly in the sense of fall protection. Therefore, the aforementioned weather protection devices essentially provide protection against rain, sunlight, and / or wind, but not against—particularly—low—external ambient temperatures.

[0014] The cab can be configured without a driver's seat. However, it can also be configured with one or more driver's seats and / or benches. These can be configured such that an operator located within the cab can operate the machinery from a position seated in such a driver's seat. For this purpose, the driver's seat can have a seat and backrest and / or one or more armrests. The one or more driver's seats can be adjusted relative to the frame of the machinery, for example by means of suitable sliding slides and / or pivoting mechanisms and / or insertion mechanisms.

[0015] Alternatively or supplementally, a portion of the driver's cab may be at least one or more hand placement surfaces and / or arm placement surfaces and / or leaning surfaces.

[0016] The hand-placement surface is particularly characterized by having no operating elements and being positioned, for example, in the immediate vicinity of one or more operating elements. Ideally, the size of the corresponding hand-placement surface is at least slightly larger than the outline area of ​​an average-sized hand, and thus can be at least 200 cm². 2 Especially at least 300cm 2 A hand rest surface is available for operator use so that their hands can be placed and / or supported on the outer surface for (e.g., in a standing operating position) support and / or for rest or in an ergonomically comfortable body posture within the cab. Therefore, such a hand rest surface can be positioned, in particular, at approximately the height of one or more operating elements within the cab and, particularly, positioned between the operator and the one or more operating elements and / or to the right and / or left of the one or more operating elements, as viewed from the operator's perspective in the direction of travel of the machinery.

[0017] This is similar to the behavior of an arm placement surface. The arm placement surface can generally be set to a larger size and, for example, include at least 250 cm. 2 The area, especially at least 350cm 2 The armrest surface has an area and a longitudinally extending base. This armrest surface can, for example, be positioned at approximately the height of one or more operating elements within the cab and / or, particularly when viewed from the operator's perspective in the forward direction of the machinery, between the operator and the one or more operating elements and / or to the right and / or left of the one or more operating elements. This armrest surface can also be formed by one or more surfaces of one or more armrests of one or more driver's seats, particularly by the upper, vertically oriented outer surface of the respective armrest.

[0018] Hand placement surfaces and / or arm placement surfaces can be configured such that they extend—particularly essentially—in a horizontal plane. Generally, a hand placement surface can also be an arm placement surface at the same time.

[0019] In contrast, a support surface refers to the outer surface of the control panel where the operator, located within the control panel of the construction machinery, can lean against it from a standing position with their body (particularly in the area of ​​their upper arms and / or thighs and / or their back and / or the front of their torso). Therefore, the backrest and seat of the driver's seat are not support surfaces in the sense of this invention.

[0020] It is understood that the surfaces actually provided in the control panel can also be supplementarily or alternatively constructed and / or positioned such that the surfaces can be used by the operator located in the control panel as both a hand placement surface and an arm placement surface and / or as both a hand placement surface and an arm placement surface and a support surface.

[0021] According to this invention, a heating element is now specified, comprising at least one heating device and a heating zone capable of being heated by conductive heat transfer from the heating device, wherein at least one heating zone forms at least a portion of the hand resting surface and / or arm resting surface and / or the standing surface and / or leaning surface within the cab with its outer surface. Therefore, to improve the operational comfort of the operator within the cab, this invention proposes to selectively heat one or more surfaces within the cab, comprising the hand resting surface and / or arm resting surface and / or standing surface and / or leaning surface, by means of at least one heating device. Thus, unlike common hot air blowers, this invention does not aim to generate a targeted airflow by means of a heated blower, but rather to heat one or more specific hot surfaces that are easily accessible to the operator within the cab, similar to heating plates, as previously described. These hot surfaces are also referred to herein as one or more heating zones. Unlike traditional hot air blowers, this method provides a significant heating effect to the operator through contact or touch of the heated area, and the heating effect is thus locally and relatively limited. Nevertheless, the operator can thus be supplied with heat at least in specific areas of their body (e.g., their limbs, more specifically, their hands) or at least temporarily warm these areas during work.

[0022] Therefore, according to this invention, a conductive heat transfer is employed between a heating element that actually generates heat and one or more corresponding surfaces comprising one or more heating areas. This means, in particular, that a heat flow between one or more solids is achieved between the heating element and the material forming the heating surface, and is not a substantially convective heat transfer. For the operator, it is possible to utilize these heating surfaces by contact, for example, with the hands, arms, and / or by leaning against the area of ​​the body used, and / or by standing on such heating surfaces, where heat transfer is then also carried out substantially based on a conductive transfer process. It has been shown that the heating process thus achievable can be sufficient for a significant improvement in operator comfort when the operator provides, for example, limited, localized heating opportunities for their limbs (e.g., their hands). Especially when working in cold external environmental conditions, operators of construction machinery are generally already mostly dressed warmly. However, the use of gloves is often considered undesirable by operators of construction machinery because, for example, the operating elements can only be operated relatively imprecisely due to the thick gloves, or—especially in the case of touch-sensitive screens or touchscreens—they are completely unresponsive to manual input. This can be similar to, for example, the bottom of the cab or the standing surface of the cab. Even though the operator here does not have direct physical contact with the heated surface, such as that included by the bottom of the cab, through the shoes or soles, especially when standing on such a heated surface for an extended period of time, a perceptible and sufficient heat transfer can be achieved from the heated surface to the inside of the shoes. Further, or alternatively, it is also possible to use the following: the operator, located inside the cab, leans against the surface in a standing operating position and / or the operator places their arm or at least a portion thereof, particularly one or both forearms, on the surface.

[0023] Unlike conventional hot air blowers, this invention proposes to selectively heat specific surface areas of the operator's cab from the inside, thereby providing the operator with one or more heated surfaces that can be used for self-heating through physical contact. Even though this process is slower than that of a hot air blower, it still provides an effective improvement in comfort for the operator located inside the cab with relatively simple equipment costs.

[0024] The heating device can be, in particular, an electric heating device. An electric heating device is characterized in that it converts electric current or electrical energy into heat and then transmits it via conduction.

[0025] The operating conditions of the electric heating device are variable. Therefore, for example, it can be specified that the construction machinery includes a power supply device that provides electrical energy to the heating device. Such a power supply device could be, for example, a battery carried by the construction machinery, particularly a storage battery, and / or the construction machinery's onboard electrical network, through which other power consumers, such as lighting devices, machine control devices, etc., are also supplied with power. It can be specified that the electric heating device is powered with electrical energy in the range of 12V to 48V when a DC voltage is applied, or with electrical energy in the range of 110V to 240V when an AC voltage is applied.

[0026] Alternatively or supplementally, the heating device or heating element may be configured integrally as a membrane element. Here, a membrane element specifically refers to a flat or relatively thin planar element, for example, having a thickness of a maximum of 3 mm, and particularly a maximum of 2 mm. Furthermore, the membrane element can deform without damage, particularly elastically or plastically, at least within a specific range during intended use. Thus, the membrane element can be bent from a practically flat initial shape. Due to its small thickness and / or deformability, the heating device or heating element can be arranged relatively simply in the dashboard, because on the one hand, the space requirement is relatively small, and on the other hand, the heating device or heating element can be mounted using three-dimensionally deformable surface areas, particularly the three-dimensionally deformable surface areas of existing dashboards, or the heating device or heating element can be adapted to existing surface structures. In the present sense, the heating membrane particularly utilizes heat generated by electrical losses in the conductors through which current flows into the membrane. The heat generated here can be transferred here—particularly directly and only—conductively or by means of conductive heat transfer to the object to be heated, as described in more detail below.

[0027] Ideally, the heating element of the heating device is constructed in multiple layers. Each layer may have one or more functions. For example, it is preferred that the layers of the heating element, particularly the layers that form the heating area themselves, are the heat layers forming the outer surface. Thus, the heat layer, or contact layer, is a layer that can be directly contacted by an operator on its outer surface for heating purposes. It is preferable that the heat layer is constructed of a relatively soft material to provide a comfortable tactile experience for the operator, especially when the operator places their hand on the outer surface. In particular, the heating element may have a heating layer beneath the contact layer. The heating layer refers to a layer in which the following parts of the heating device are arranged, which generate heat—particularly directly from electrical energy—and output the heat, particularly to the contact layer, by means of conductive heat transfer. For this purpose, for example, it may be specified that the heating layer includes an embedded material or a base material, a plurality of metal wires, more particularly a plurality of metal wires of an electric heating device, particularly, for example, copper strips embedded in the embedded material or base material. The heating layer is therefore the heat-generating layer of the heating element. Finally, it may be further supplemented or alternatively specified that the heating element has an extending connecting layer—particularly beneath the heating layer. The connecting layer specifically refers to the layer through which the heating element is physically connected to the rest of the control panel.

[0028] The heating layer may include, for example, one or more conductors, particularly conductor lines, especially conductor lines that extend in a completely tortuous manner. These conductor lines may be made of, for example, copper or silver and / or embedded in a carrier layer made of plastic material. The contact layer and / or connection layer may, in particular, be, for example, one or more layers made of plastic material, such as polyethylene plastic and / or polyurethane plastic.

[0029] Advantageously, the heating layer is made of a plastic material—particularly resilient and / or hydrophobic and / or UV-resistant. Since the bridge is constructed without a cabin, the heating element may also be exposed to weather effects, such as sunlight and / or rain, at least on its external surface. In this regard, it is advantageous to use a plastic material that is resistant to such weather effects, at least for constructing the heating layer. Using a resilient plastic material facilitates installation and / or allows for the shaping or three-dimensional deformation of the heating layer on its outer surface, which, for example, complementarily adapts to or is close to the hand. This also allows for tactile feedback to the operator, i.e., the operator's hand is precisely placed in the area of ​​the heating element.

[0030] Different variations of the connecting layer's specific construction are also possible. For example, the connecting layer can be constructed as a hook-and-loop structure with a hook side (barb) or a loop side (loop). In this way, the heating element can be relatively quickly and reversibly secured within the bridge and / or one or the same heating element can be alternately secured to different locations on the bridge. However, it is also feasible, as a supplement or alternative, that the connecting layer includes one or more magnetic elements made of permanent magnet materials and magnetic materials, such that the connecting layer is, for example, part of a magnetic connection structure having corresponding securing areas within the rest of the bridge. This can be particularly advantageous in this respect, as metallic and magnetic areas often already exist in existing cabinless bridges, for example, as part of a frame, as part of a protective structure, such as a roll over protection structure (ROPS) and / or railings, or as part of the control panel. Furthermore, the advantage of a magnetic connection structure is that it can be relatively easily loosened and reassembled. Further supplementally or alternatively, it can be specified that the connecting layer is ultimately constructed as an adhesive layer. This is particularly meaningful when one or more heating elements are to be fixedly installed inside the cab.

[0031] The heating element can be configured as a heating module that operates independently of the rest of the construction machinery. This means that the heating element, particularly including its heating device and one or more components forming the heating area, can be configured as a coherent functional unit, which can be relatively easily, for example, added in this way. It can be specified that the heating module includes its own power supply. However, it is also possible for the heating module to be configured such that it—particularly via a detachable, power-transmitting plug-in connection—connects to the existing power supply of the construction machinery, such as the construction machinery's onboard electrical grid, the plug-in connection configured to establish an energy transfer connection from the construction machinery's onboard electrical grid to the heating element. In this case, the heating element may include a portion of the plug-in connection, and the rest of the construction machinery may include another portion of the plug-in connection.

[0032] It is feasible that the at least one heating area is constructed to be flat or curved in terms of its outer surface. A flat construction generally allows for a relatively simple installation process. Furthermore, in this type of cab, sufficiently flat surfaces are often available, considered as potential and positionally meaningful locations for arranging one or more heating areas. However, alternatively, it may also be specified that the at least one heating area is constructed to be curved or three-dimensionally deformed in terms of its outer surface. This, for example, allows non-flat surfaces within the cab to be used as load-bearing structures for one or more heating areas, and alternatively, also allows for advantageous three-dimensional deformation of the heating area itself, such as as a groove, hollow structure, or the like.

[0033] Therefore, it is also feasible and included in this invention that the heating area of ​​the heating element is part of the outer surface of the heating groove and / or heating grid, particularly as part of the dashboard, the control panel, or the back of the driver's seat. Here, the heating groove is characterized by having an outer surface that recesses from at least two opposing edges of the heating groove relative to adjacent outer surfaces, thus achieving, for example, a basin-shaped or groove-shaped surface structure. The heating groove is therefore a surface recess relative to the area adjacent to the heating groove. In contrast, the heating grid is characterized by comprising a hollow structure resembling blind holes or tunnels, particularly cavities open to the external environment only on one side or only on two opposing sides. The internal space of the cavity can be lined with one or more heating areas. This is achieved in such a way that, despite the conductive heat conduction process described at the beginning, a locally bounded space is still provided, which can simultaneously have heated surfaces on multiple sides. This could be, for example, a type of heating compartment in which an operator located in the control room could, for the purpose of warming up, at least temporarily and ideally also windproofly extend and / or place one or both of his / her hands (with at least his / her forearms if necessary) and / or his / her feet or shoes into the heating compartment.

[0034] It is feasible that the operating device is an operating table, and a portion of the outer surface of the operating table and / or a portion of the outer surface adjacent to the operating table is formed by the outer surface of the heating element. The operating device may in particular have—particularly adjustable relative to the frame of the engineering machinery—an operating table having an operating area including one or more operating elements, the operating area being equipped with one or more heating elements as described above.

[0035] Additionally, it may be specified that one or more of the operating elements can also be heated by means of one or more heating devices.

[0036] Alternatively or supplementarily, it is also feasible to have a drop protection section defining the cab, and a portion of the outer surface of the drop protection section facing the cab is formed by the outer surface of the heating element. Such a drop protection section may be, for example, a railing and / or side wall element, a front wall element and / or a rear wall element, and in particular, also includes one or more doors. Here, depending on the type of construction machinery, it often occurs that the operator inside the cab (especially when viewed in the direction of travel of the construction machinery) wants to observe laterally along the outer wall of the respective construction machinery. This is often the case, for example, in road construction machinery where work is frequently carried out along boundaries extending laterally in the working direction (e.g., curbs, buildings, milling tracks, paving mats and / or roller tracks). In this case, the operator often extends part of their upper body out of the cab and for this purpose supports themselves by leaning against a drop protection section or the like. In this regard, if this area of ​​support is heated by one or more heating elements, it can be very comfortable for the operator.

[0037] As mentioned above, it is feasible to arrange one or more driver seats within the dashboard. Preferably, each of the one or more driver seats includes at least one hand rest and / or arm rest. This could be, for example, an armrest. In this case, it can be advantageous for a portion of the upper vertical surface of the hand rest and / or arm rest to be formed by the outer surface of a heating element. Because during ongoing operation, the operator's arms are placed on the armrest whenever it is present, effective heating can be achieved even through relatively thick clothing.

[0038] Particularly advantageous is that the at least one heating area has markings that can be perceived visually and / or tactilely. Visually perceptible markings may be, for example, color markings. Tactilely perceptible markings may be, for example, surface structures or surface structures that change in area of ​​the heating area relative to the outer surface adjacent to the heating area; for example, a smooth surface. Particularly preferred is that the markings are constructed to surround or extend along at least one outer edge of the one or more heating areas. This makes it easier for the operator to determine the actual location of the one or more heating areas.

[0039] In principle, it is feasible to configure the heating element so that it is heated to a target temperature or operates with a constant energy consumption. However, it is also possible to specify that the heating element is configured so that the target temperature can be gradually or steplessly adjusted or set. This allows, for example, a response to the different individual needs of different users or to different ambient temperatures. For this purpose, it is feasible to include one or more suitable operating elements through which the operator can input corresponding presets.

[0040] It can be specified that a control unit exists, configured to adjust the temperature of the heating element according to a preset target temperature. In this case, the heating element may also include, in particular, a temperature sensor that determines the current actual temperature of the heating element and adjusts the corresponding regulatory intervention with reference to the determined actual temperature to obtain the target temperature of the heating element. Alternatively or supplementarily, the control unit is configured to adjust the temperature of the heating element according to a target temperature preset by the operator and changeable. Further, or alternatively, the control unit is configured to adjust the temperature of the heating element according to the operating parameters and / or environmental parameters of the construction machinery. The operating parameters of the construction machinery may, for example, be the activation / deactivation of the onboard electrical network and / or the activation / deactivation of the standby mode and / or the working mode of the construction machinery, the working operation and scheduling operation of the construction machinery, and / or the emergency operation of the construction machinery, in which the operation of the construction machinery is only available within a limited range. These individual operating parameters can be assigned to different operating states of the heating element. For example, it is advantageous to deactivate the heating element during emergency operation. In contrast, in standby mode, particularly as part of the startup and operation of construction machinery, it can be meaningful for the heating element to be activated even when there is no operator in the cab. This allows for efficient use of a preheating time, for example. Control of the heating element's operating status can be further supplemented or alternatively based on the battery's state of charge (SOC). If the battery is only weakly charged or its current SOC is below a threshold, the heating element can be deactivated for energy-saving purposes, and vice versa. Control of the heating element's operating status can also be further supplemented or alternatively based on the external temperature. For this purpose, the construction machinery may include an external temperature sensor or an ambient temperature sensor. If the external temperature, for example, is above a defined threshold temperature, the control unit can now be configured to permanently disable the activation of the heating element. Alternatively or alternatively, the control unit can be configured to automatically activate the heating element when the external ambient temperature is below a threshold, particularly when the construction machinery is in operation. Of course, it is also feasible, as a supplement or alternative, that the heating device be configured so that it can be manually activated and / or deactivated by an operator located in the driver's cab.

[0041] A heating element may include one or more heating zones. If a heating element has multiple heating zones, it may be specified that these heating zones can all be activated and / or deactivated together, or can be activated and deactivated independently or separately, and / or can be set to different target temperatures.

[0042] Specifically, it can be specified that operating elements are arranged within the area of ​​one or more heating zones, via which the heating devices of the respective heating zones can be activated and / or deactivated. Additionally or alternatively, one or more sensors may also be arranged within the area of ​​the one or more heating zones, for example in the form of one or more pressure sensors configured to detect body parts, such as hands, placed and / or resting against the respective heating zones.

[0043] There are different feasible solutions for different types of self-propelled construction machinery. However, this utility model is particularly applicable to road construction machinery, especially road milling machines, graders, feeders, or rollers. Attached Figure Description

[0044] The present invention will now be described in more detail with the aid of embodiments shown in the accompanying drawings. The drawings schematically illustrate:

[0045] Figure 1 The image shows a type of construction machinery called a road milling machine, as an example of road construction machinery;

[0046] Figure 2 The image shows a type of construction machinery, specifically a road roller, as an example of road construction machinery.

[0047] Figure 3 The image shows a type of grader as an example of road construction machinery;

[0048] Figure 4 A top view showing an embodiment of a cockpit without a cabin;

[0049] Figure 5 A top view showing another embodiment of a cabinless bridge;

[0050] Figure 6 A cross-sectional view showing an embodiment of a multi-layered heating element arranged in the driver's cab;

[0051] Figure 7 A cross-sectional view showing another embodiment of a multi-layered heating element arranged in the driver's cab;

[0052] Figure 8 A perspective view of the heating grid / heating trough is shown; and

[0053] Figure 9 A perspective view of a heating element in the form of a heating module is shown. Detailed Implementation

[0054] Identical or functionally equivalent components are indicated by the same reference numerals in the accompanying drawings. Repeating components do not need to be labeled separately in each drawing.

[0055] Figures 1 to 3 Side views of various exemplary self-propelled construction machinery 1 are shown. Construction machinery 1 may include a frame 3 supported by a running gear 2, which forms the main load-bearing structure of construction machinery 1. Construction machinery 1 may be self-propelled and for this purpose has one or more primary drive units 4, such as internal combustion engines and / or electric motors, through which the drive energy required for the travel and working operation of construction machinery 1 is provided. Therefore, construction machinery 1 (wherein, for example, it may be road construction machinery) is able to move along the working direction A on the ground 5 by its own drive unit and perform processing on the ground thereon during working operation.

[0056] Therefore, the construction machinery 1 may have one or more working devices 6 or ground processing devices. According to... Figure 1 In the case of engineering machinery 1, which is constructed as a road milling machine, this could be, for example, a milling device. According to... Figure 2 In the case of engineering machinery 1, which is constructed as a tandem roller, this can be the traveling device 2 itself, constructed as a roller-pressed belt, and / or a vibration excitation device not shown in the figure. For according to... Figure 3 For example, in the case of a grader, this could be a slab lining machine.

[0057] To operate the construction machinery 1, the machinery may have a cab 7. This cab is configured as either an open cab 7 or a cabinless cab 7. This means that, in addition to the cab base 8, the cab may have one or more operating devices 9 and / or one or more driver seats 10. A cabinless cab 7 may also include a weather-protected canopy 11 and / or one or more side walls 12 and / or a front window 13 and / or a rear window (not shown in the figures). Although weather protection is optionally present, the cab 7 is at least partially configured to be open to the external environment, so that the driver inside the cab 7 is always directly exposed to some degree to the external climatic conditions, particularly the external ambient temperature.

[0058] In addition, a portion of the cab 7 may be one or more drop protection units 14, particularly in the form of one or more railings or similar devices for rollover protection. Alternatively or supplementarily, the cab 7 may also include a roll over protection structure 15 (ROPS).

[0059] Figure 4 The components of the control panel 7 are shown in a top view. The features described for the control panel 7 can be applied individually or in combination to... Figures 1 to 3 It can be used on one of the engineering machines 1 shown, or it can be transferred to other engineering machines 1.

[0060] The bottom 8 of the cab 7 includes a standing surface 16. Therefore, the standing surface refers to the following portion of the bottom 8 of the cab or the outer surface of the bottom of the cab: where the operator located inside the cab 7 rests or where the operator can stand during operation of the construction machinery 1.

[0061] The control panel 7 also includes one or more hand rest surfaces 17. The hand rest surface 17 refers to an outer surface on which the operator within the control panel 7 can support and / or rest their hands during continuous driving and operational runs. This hand rest surface 17 may be positioned close to one or more of the operating devices 9.

[0062] The driver's cab 7 may also include one or more arm placement surfaces 18. These arm placement surfaces represent the outer surface of the driver's cab 7 on which the operator, located within the driver's cab 7, can support and / or rest their arm, particularly their forearm, during continuous driving and operational runs. Such an outer surface may, for example, be formed by the driver's seat 10 (…). Figure 5 In this figure, one or more armrests 20 are formed by the driver's seat 10 below. Alternatively or supplementarily, one or more of the hand placement surfaces 17 may also be configured, for example, in terms of their size and / or position, such that they are also suitable for placing an arm, particularly at least one forearm.

[0063] In particular, not only the hand placement surface 17 but also the arm placement surface 18 can be configured such that they extend substantially horizontally, or at least substantially in a horizontal plane.

[0064] Finally, supplementally or alternatively, the cab 7 may include one or more support surfaces 19. These support surfaces represent the outer surface of the cab 7 on which an operator located within the cab—particularly in a standing position—can lean against.

[0065] The surface 19 can be configured such that it extends at least substantially vertically or in a vertical plane.

[0066] Figure 5 In another embodiment of the driver's seat 7, the driver's seat may also include one or more driver seats 10. The seat surface 21 of the driver seat 10 is located outside the standing surface 16, hand placement surface 17, arm placement surface 18, and backrest surface 19. However, the driver seat 10 may have one or more armrests 20. The outer surface of the armrest—particularly in the vertical direction—may be the arm placement surface 18.

[0067] The operating device 9 can, for example, be configured as an operating table 21 ( Figure 1 , Figure 2 , Figure 4 and Figure 5 The control panel, in particular, comprises multiple individual operating elements; it is configured as a steering wheel; it is configured as a joystick or the like. The operating device 9 may also be integrated, for example, into the armrest. Multiple—particularly spatially separated—control panels 21 may be provided in the driver's console 7, for example in… Figure 4 and Figure 5 As shown in the diagram. The control panel 21 can be adjustable, for example, linearly movable and / or rotatable and / or pluggable.

[0068] The operator's platform 7 in various embodiments includes one or more heating elements 22. The function of the heating elements 22 is to heat specific surface areas of the operator's platform 7, such as the standing surface 16 and / or the hand placement surface 17 and / or the arm placement surface 18 and / or the leaning surface 19. The operator can thus come into contact with these specific surface areas and thereby partially warm up.

[0069] Feasible structural alternatives for this heating element 22 are... Figure 6 and Figure 7 The following example further clarifies this. Therefore, heating element 22 refers to a device configured to generate heat, and this device—specifically, solely—supplyes the generated heat to the outer surface of the heating element by means of conductive heat transfer. This heated outer surface can then contact or touch the operator located within the console 7, and in this way, specifically heat the contacted body area, said outer surface being specifically positioned in the area of ​​the standing surface 16 and / or hand placement surface 17 and / or arm placement surface 18 and / or leaning surface 19 of the console 7.

[0070] The heating element 22 may consist of a heating device 23 and a heating area 24 having an outer surface 25. The one or more heating elements 22 may be arranged within the driver's cab 7 such that the outer surfaces 25 of the one or more heating elements 22 form the surface areas of the driver's cab 7's standing surface 16 and / or hand placement surface 17 and / or arm placement surface 18 and / or leaning surface 19. Therefore, in Figure 6 and Figure 7 In this context, the control platform 7 is considered as the corresponding support structure for the one or more heating elements 22.

[0071] The heating element 22 can be constructed in multiple layers and for this purpose has, for example, a connecting layer 26, a heating layer 27, and a heat layer 28.

[0072] The function of the connecting layer 26 is to establish a connection between the corresponding heating element 22 and the fastening and / or contact areas of the remaining engineering machinery 1. For this purpose, the connecting layer 26 can be constructed, for example, as an adhesive layer 29, such as in… Figure 6 As shown in the illustration. Alternatively or supplementarily, it is also possible to configure the connecting layer 26, for example, as a connecting layer 26 capable of being released without damage, as in... Figure 7 As shown in more detail below. This can be achieved, for example, by constructing the connecting layer as a magnetic connection structure 34 having one or more permanent magnetic elements 30 and magnetic mating surfaces 35. Alternatively or supplementarily, the connecting layer may be constructed as a snap-on connection structure 31 having hook sides 32 and fleece sides 33.

[0073] The heating layer 27 is a layer in which heat is generated and transferred conductively. For this purpose, the heating layer may, for example, have multiple heating wires or the like through which an electric current flows. In particular, the heating layer 27 can be configured such that electrical energy is converted into thermal energy within it.

[0074] The heating layer 28 is a layer in which the heat generated in the heating layer 27 is conductively transferred to the outer surface of the heating element 22. The heating layer 28, or contact layer, may also be constructed as a layer common to the heating layer 27. Therefore, it is important that, within the heating element 22, the heat generated by the heating device is transferred directly and solely through conductive heat transfer to the outer surface of the heating element 22 that forms the heating surface.

[0075] One or more heating elements 22 can be arranged within the driver's cab 7. For this purpose, the corresponding heating areas 24 of the one or more heating elements 22 are... Figure 4 and Figure 5 The information is provided in the text.

[0076] For example, a heating area 24 is designated as 24A, which forms part of the standing surface 16 of the corresponding driver's seat. Therefore, these heating areas may be located, for example, particularly in the right and / or left edge regions of the bottom 8 of the driver's seat with respect to the working direction A and / or in front of the driver's seat 10 along the working direction A.

[0077] 24B indicates, alternatively, the following heating areas 24 present within the control panel 7, which may form part of the support surface 19. These heating areas may be integrated, for example, into the drop protection unit 14, or, for example, into an area of ​​the control panel projected in the horizontal plane that connects to one or more operating devices 9 (e.g., vertically below the respective operating device 9) and / or connected to the drop protection unit or the area thereon, so that an operator leaning against the drop protection unit 14 and / or located in front of the operating device 9 can conveniently lean at least partially against one or more such heating areas 24 in the operating position.

[0078] 24C denotes a supplementary or alternative heating area 24 present within the control console 7, which forms part of the hand-placement surface 17. This may in particular be an area on the outer surface of the control console 7 that is approximately at the height of one or more operating devices 9 and is adjacent to, and particularly adjacent to, the one or more operating devices 9 in the projection of the control console 7 onto a virtual horizontal reference plane.

[0079] 24D denotes a supplementary or alternative heating area 24 present within the driver's seat 7, which forms part of the armrest surface 18. This heating area may, in particular, form part of the upper vertical outer surface of, for example, one or more armrests 20.

[0080] The surface area can be set to be suitable for both hand and arm supports. This is indicated by 24C,D.

[0081] However, it can be specifically stipulated that the base surface of one or more of the operating tables 21 (on which the plurality of operating elements of the corresponding operating table 21 are arranged) is also at least partially constructed as a heating zone 24, in particular as a heating zone 24C (not necessarily the one or more operating elements themselves, which is accompanied by increased construction costs).

[0082] Figure 8Another variation for arranging and constructing the heating zone 24 is shown. Thus, for example, it can be specified that a heating grid 37 or heating trough 36 exists in the control panel 7. The heating grid 37 is characterized in that it surrounds an internal space and has at least one opening. One or more heating zones 24 can be arranged within the internal space of the grid. The operator, located within the control panel 7, can thus pass through the opening, specifically introducing one or both hands into the internal space of the grid and thereby heating their hands in a windproof environment. Viewed vertically, one or more such heating grids 37—particularly below one or more operating devices in the operating device 9—are arranged within the control panel 7. Instead of the embodiment where the heating grid 37 surrounds the internal space of the grid, the heating grid can also be constructed as a recess or heating trough 36 extending downwards in the vertical direction. This is in Figure 8 The diagram is illustrated by the cross-sectional plane 38 shown. The portion of the heating grid 37 located below the cross-sectional plane 38 forms the heating trough 36.

[0083] The heating element 22 can be configured, at least partially and particularly, as a membrane element 39, which in Figure 9 This is shown in more detail below. In particular, the heating zone 24 can be configured as a membrane element 39 that is preferably three-dimensionally deformable without damage and can be arranged very well in a ground-like manner within the driver's cab 7. For this purpose, the membrane element 39 can in particular have a heating layer 27 and a heat layer 28, and optionally at least partially also have a connecting layer 26.

[0084] according to Figure 5 , Figure 6 and Figure 9 The heating element 22, as part of the heating device 23, may have a metal wire 41 embedded in the base material 40. Furthermore, the heating device 23 may be configured as an electric heating device and supplemented by, for example, the metal wire 41, a power supply device 42. The metal wire 41 may be configured as a heating wire and thereby convert electrical energy into heat when connected to the power supply device. Here, this may, for example, involve a connection or linkage on the onboard electrical grid of the construction machinery 1 and / or involve an energy storage device, such as a battery. The power supply device 42 may be connected to the metal wire 41 via an energy transfer connection 43. The energy transfer connection 43 may include a detachable plug-in connection 45.

[0085] The heating element 22 may have a control unit 44. The control unit 44 may be configured, for example, to control or regulate the heating of the heating zone 24 to a preset temperature. Alternatively or supplementarily, the heating element 22 may have an operating element 47 through which preset operation and / or control presets (e.g., target temperature), activation and / or deactivation of the heating element, timer on / off functions, and / or timer functions can be input by an operator and transmitted to the control unit 44. It is possible that the operating element 47 is directly arranged within the surface of the heating zone 24.

[0086] In general, the heating element 22 can be configured as a heating module 46, and in this way can also be well integrated and / or operated completely independently of the rest of the engineering machinery 1.

[0087] To make it easier for the operator located within the control panel 7 to locate the "heated" outer surface or heated area 24, it may be specified that the outer surface or the outer surface of the heated area is identified by means of a mark 48. This may be a visually perceptible mark, such as a color mark, and / or a tactilely perceptible mark, such as a surface texture.

[0088] Regardless of the specific embodiment, it may also be provided, supplementarily or alternatively, that an indicator 49 is present. This may, for example, involve a visually perceptible display, particularly one or more LEDs. The indicator 49 may be configured to display the operating status of the heating element 22, such as whether the heating element is currently activated and / or deactivated and / or has reached or has not reached a defined target temperature. Regarding the specific arrangement, it may be specified that the indicator 49 is located within one or more heating zones of the heating zone 24 or outside the heating zone.

[0089] List of reference numerals

[0090] 1. Construction Machinery

[0091] 2. Driving device

[0092] 3 racks

[0093] 4 Primary drive unit

[0094] 5 ground

[0095] 6 Working devices

[0096] 7-stage cockpit

[0097] 8. Bottom of the driver's cab

[0098] 9 Operating devices

[0099] 10 driver seats

[0100] 11-day protective canopy

[0101] 12 sidewalls

[0102] 13-inch front window glass

[0103] 14 Fall Protection Department

[0104] 15 ROPS structure

[0105] 16 standing surfaces

[0106] 17 hands placed on the surface

[0107] 18 arms placed on the surface

[0108] 19. Leaning against the surface

[0109] 20 handrails

[0110] 21 control panel

[0111] 22 heating elements

[0112] 23 Heating device

[0113] 24 heating zones

[0114] 25. The outer surface of the heating area

[0115] 26 connection layers

[0116] 27 heating layers

[0117] 28 thermal layers

[0118] 29 adhesive layers

[0119] 30 magnetic components

[0120] 31-button connection structure

[0121] 32 hook side

[0122] 33pile side

[0123] 34 magnetic connection structure

[0124] 35 magnetic mating surface

[0125] 36 heating tubs

[0126] 37 heating grids

[0127] 38 Section Plane

[0128] 39 membrane elements

[0129] 40 basic materials

[0130] 41 metal wire

[0131] 42 Power Supply Units

[0132] 43 Energy Transfer Connection

[0133] 44 control units

[0134] 45 Detachable plug-in connector

[0135] 46 heating modules

[0136] 47 Operating elements

[0137] 48 marks

[0138] 49 Indicating Device

[0139] A career direction

Claims

1. A self-propelled engineering machine with a cabinless driver's cab, said driver's cab (7) comprising: - At least one bottom of the console (8) having a standing surface (16). - At least one operating device (9) for inputting control presets by an operator located within the control console (7), and - At least one or more hand placement surfaces and / or arm placement surfaces (17, 18) and / or leaning surfaces (19). Its features are, There is a heating element (22) comprising at least one heating device (23) and a heating area (24) that can be heated by means of conductive heat transfer from the heating device (23), wherein at least one heating area (24) forms at least a portion of the hand placement surface and / or arm placement surface (17, 18) and / or the standing surface (16) and / or the leaning surface (19) within the dashboard (7) with the outer surface of the heating area.

2. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1, Its features are, The heating device (23) is an electric heating device.

3. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The engineering machinery (1) includes an electrical power supply device (42) that provides electrical power to the heating device (23).

4. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The heating device (23) or the heating element (22) is generally constructed as a membrane element (39).

5. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The heating element (22) is constructed in a multi-layered manner and has a heat layer (28) forming the outer surface, a heating layer (27) extending under the heat layer, and a connecting layer (26) extending under the heating layer.

6. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 5, Its features are, The thermal layer (28) is made of plastic material.

7. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 6, Its features are, The thermal layer (28) is made of a plastic material that can be elastically deformed.

8. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 5, Its features are, The heating layer (27) includes a base material (40) in which a plurality of metal wires (41) are embedded.

9. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 8, Its features are, The metal wire (41) is the metal wire of the electric heating device.

10. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 5, Its features are, The connection layer (26) has at least one of the following characteristics: - The connecting layer is constructed as a hook side (32) or a fleece side (33) of a snap fastener connection structure. - The connecting layer includes one or more magnetic elements (30) made of permanent magnet material or magnetic material; - The connecting layer is constructed as an adhesive layer (29).

11. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The heating element (22) is configured as a heating module (46) that can operate independently of the other engineering machinery (1), the engineering machinery (1) including a detachable plug-in connection (45) configured to establish an energy transfer connection (43) from the on-board power grid of the engineering machinery (1) to the heating element (22).

12. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The at least one heating area (24) is configured to be flat or curved in terms of its outer surface.

13. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The heating area (24) of the heating element (22) is part of the outer surface of the heating groove (36) and / or heating grid (37).

14. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The operating device (9) is an operating table (21), and a portion of the outer surface of the operating table (21) is formed by the outer surface of the heating element (22).

15. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, There is a drop protection section (14) that defines the control panel (7), and a portion of the outer surface of the drop protection section (14) facing the control panel (7) is formed by the outer surface of the heating element (22).

16. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The driver's seat (10) is arranged within the dashboard (7), the driver's seat (10) includes at least one hand placement device and / or arm placement device (20), and a portion of the upper vertical surface of the hand placement device and / or arm placement device (20) is formed by the outer surface of the heating element (22).

17. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The at least one heating area (24) has markings (48) that can be perceived visually or tactilely.

18. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The heating element (22) is configured such that the target temperature of the heating element (22) can be gradually or steplessly adjusted.

19. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, There is a control unit (44) that has at least one of the following features: - The control unit adjusts the temperature of the heating element (22) according to the preset target temperature; - The control unit adjusts the temperature of the heating element (22) according to a target temperature preset by the operator and which can be changed; - The control unit adjusts the temperature of the heating element (22) according to the operating parameters and / or environmental parameters of the engineering machinery (1).

20. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The heating element (22) has multiple heating zones (24), which can be activated and deactivated and / or set to different target temperatures.

21. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 20, Its features are, The multiple heating zones (24) can be activated and deactivated independently or separately and / or can be set to different target temperatures.

22. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, An operating element (47) is arranged within the area of ​​one or more heating zones (24) themselves, via which the heating device (23) of the corresponding heating zone (24) can be activated and / or deactivated.

23. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 1 or 2, Its features are, The engineering machinery (1) mentioned is road engineering machinery.

24. The self-propelled engineering machinery with a cabinless driver's cab as described in claim 23, Its features are, The engineering machinery (1) is a road milling machine, grader / feeder or roller.

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