Self-propelled road construction machine

Abstract

The utility model relates to a kind of self-propelled road construction machinery, the feature of road construction machinery is that multiple instruction data sets are stored in storage device, the data set all include the data of instruction for using man-machine interface visualization.Control device provides learning mode, it includes multiple courses for adjusting the position of wheel and / or height of milling / mixing roller, and it is configured to select specific data set from instruction data set stored in storage device based on the operating state or operating mode of driver and actuator detected by state monitoring device, the instruction corresponding to selected instruction data set is visualized using man-machine interface.In addition, based on the command input through man-machine interface after visualizing instruction, control device generates control command signal corresponding to input command for driver and actuator, so that wheel and / or milling / mixing roller moves.

Description

Technical Field

[0001] This utility model relates to a self-propelled road construction machine, comprising: a mechanical frame supported by drivable, steerable wheels or tracks; a milling / mixing roller for processing the ground surface; and a plurality of drives and / or actuators associated with the wheels or tracks and the milling / mixing roller, the milling / mixing roller being arranged on the mechanical frame and being height-adjustable relative to the ground surface to be processed, the drives and / or actuators being used to drive the wheels or tracks and cause the wheels or tracks to steer and adjust the height of the milling / mixing roller relative to the ground surface to be processed. Background Technology

[0002] Among well-known self-propelled road construction machinery are road milling machines, which can be used to mill road surfaces. It is important to distinguish road milling machines from aggregate mixers or regenerators, which create a load-bearing subbase from non-load-bearing subsoil (e.g., loose ground (aggregate mixer) or damaged road surface (regenerator)) by adding an adhesive. This load-bearing subbase is suitable for subsequent road surface construction. Road milling machines and aggregate mixers or regenerators have milling / mixing rollers that are height-adjustable relative to the ground to be processed for milling and mixing the substrate, and, if necessary, with additional adhesive. The milling / mixing rollers are arranged on a mechanical frame supported by wheels or tracks. Drives and / or actuators are configured to drive the wheels or tracks and cause them to steer, as well as to adjust the height of the milling / mixing rollers. Furthermore, known road construction machinery has control devices for controlling the drives and / or actuators.

[0003] The height of the milling / mixing rollers relative to the ground surface can be adjusted by adjusting the height of the milling / mixing rollers relative to the mechanical frame. If the road construction machinery is equipped with a lifting device that supports the mechanical frame, the height of the milling / mixing rollers can also be adjusted by raising and lowering the mechanical frame. This lifting device also allows for adjustment of the tilt of the mechanical frame relative to the ground surface.

[0004] Known drives and actuators in road construction machinery are typically hydraulic. A hydraulic pump driven by an internal combustion engine is configured to supply hydraulic fluid to the hydraulic drives and actuators. Alternatively, an electric drive can be provided, where energy can be supplied, for example, via a battery or generator driven by an internal combustion engine.

[0005] Furthermore, well-known road construction machinery features a human-machine interface (HMI), through which operators can interact and communicate with the machinery. Interaction with the machinery can be achieved through various operating elements and display units.

[0006] The demands on the operation of road construction machinery are becoming increasingly stringent. Operators need to precisely adjust the position of wheels or tracks to move the machinery along a predetermined path, and to precisely adjust the height of the machine frame relative to the ground surface, ensuring accurate alignment. Operators must also be able to precisely adjust the height of the milling / mixing rollers relative to the ground surface to achieve the desired milling depth. Utility Model Content

[0007] The purpose of this invention is to provide a self-propelled road construction machine that gives operators the opportunity to quickly become familiar with the construction machinery.

[0008] According to this utility model, this objective is achieved through the following features.

[0009] The embodiments of the present invention described below may include one or more features or combinations of features mentioned below. The indefinite article should not be construed as an explicit reference to a single use; a feature specified with the indefinite article may also exist more than once. Features specified with numerical terms such as "first" and "second" do not preclude the possibility that the number of these features may be greater than the number indicated by the numerical term. Throughout the description of all embodiments, the expression "may" should also be understood as "preferably" or "conveniently".

[0010] The road construction machinery according to the present invention has a control device configured to generate control command signals for drives and / or actuators associated with wheels or tracks and / or milling / mixing rollers, so as to drive the wheels or tracks and cause the wheels or tracks to turn and adjust the height of the milling / mixing rollers relative to the ground to be processed.

[0011] Furthermore, the road construction machinery according to this invention has a human-machine interface that interacts with the control device and a storage device that interacts with the control device. The road construction machinery also includes a condition monitoring device that interacts with the control device and is configured to detect the operating state and / or operating mode of the drive and / or actuator. In this case, the operating state is understood as the current state of the drive or actuator (where the drive or actuator is detected), such as whether the drive or actuator is activated or deactivated, or at what speed the discrete parts of the drive or actuator move, or in what position the various parts of the drive or actuator take. In this respect, the operating state of the drive or actuator is associated with a specific mechanical function, such as the adjustment of the height of the milling / mixing roller relative to the ground surface. Therefore, the height of the milling / mixing roller can be detected by monitoring the operating state of the height-adjusting actuator. If the drive or actuator is designed to allow different operating modes, the condition monitoring device can also detect these operating modes, such as different steering modes that can be provided by the control device for steering the wheels or tracks. The storage device may include a central memory as a component of the central control device or multiple memories as parts of discrete control units.

[0012] The road construction machinery according to this invention is characterized in that multiple instruction datasets are stored in a storage device, each dataset containing data for visualizing instructions using a human-machine interface. The datasets can be read into the storage device. In this case, instructions are understood as prompts for the operator to perform specific actions, including inputting commands via the human-machine interface to adjust the position of wheels or tracks and / or the height of milling / hybrid rollers relative to the surface to be processed. The instruction dataset contains data for visualizing instructions via the human-machine interface.

[0013] To visualize the instruction dataset, the human-machine interface can, for example, have a display screen on which graphical representations (especially pictographs or animations) can be used to visualize the dataset. The instruction dataset then includes the data necessary for displaying the graphics on the screen, such as image data, so that graphics prompting the operator to enter commands can be displayed on the screen. The image data can be data in known formats, such as PNG and JPEG, but can also be TIFF, GIF, etc. Alternatively or additionally, to visualize the instructions, the operating element to be operated can be identified, for example, by highlighting the lighting (especially the flickering of the operating element lighting compared to other operating elements of the construction machinery).

[0014] In addition to the actual operating mode, the control unit of road construction machinery also provides a learning mode, which has multiple courses for adjusting the position of wheels or tracks and / or the height of milling / mixing rollers. In this case, the learning mode is understood as a mode separate from the actual operation of the construction machinery, aimed at achieving specific operational results and designed to allow the operator to learn specific functions of the machinery. The learning mode includes multiple courses, each of which may have a specific learning objective, such as adjusting the height of the milling / mixing rollers or adjusting the steering angle of the wheels or tracks.

[0015] The control device is configured for at least one lesson in a learning mode, such that, based on the operating state and / or operating mode of the driver and / or actuator detected by the state monitoring device, a specific dataset is selected from a dataset of instructions stored in a storage device, and the instructions corresponding to the selected dataset are visualized using a human-machine interface. Therefore, based on the operating state or operating mode of the driver or actuator, the operator is prompted to input specific commands to control the machine, thereby familiarizing the operator with specific machine functions predetermined by the machine itself.

[0016] The control device is also configured to generate control command signals corresponding to the input commands for the drives and / or actuators, based on commands input by a person using the human-machine interface after the visualization of the instructions. These signals are used to drive the wheels or tracks and cause the wheels or tracks to steer and / or adjust the height of the milling / hybrid rollers. Therefore, after the command is input, the position of the wheels or tracks and / or the height of the milling / hybrid rollers are actually changed. This distinguishes the learning mode from pure simulation. Road construction machinery also allows operators to experience the machinery's responsiveness to command inputs, enabling them to familiarize themselves with the mechanical functions predetermined by the machinery based on corresponding operating states or modes. This is crucial for successful learning.

[0017] According to embodiments of the road construction machinery of this utility model, one lesson in the learning mode is the adjustment of the height of the milling / mixing roller relative to the surface to be processed. For this function of the learning mode, the control device is configured such that if the status monitoring device detects that the height of the milling / mixing roller relative to the ground surface is less than a predetermined limit, it selects an instruction dataset from the instruction dataset stored in the storage device and visualizes the instruction corresponding to the selected instruction dataset using the human-machine interface. This instruction prompts the operator to input a command to raise the milling roller, thus actuating at least one actuator assigned to the milling / mixing roller, causing the milling / mixing roller to be raised. This ensures that the operator can familiarize themselves with the height adjustment of the milling / mixing roller under real-world conditions without worrying about the current position of the milling / mixing roller. Therefore, the operator can practice height adjustment without the risk of the milling / mixing roller unintentionally penetrating the ground, even on the first attempt.

[0018] The control device is further configured to: if the condition monitoring device detects that the height of the milling / mixing roller relative to the ground surface is greater than a predetermined height limit, select an instruction dataset from the instruction dataset and visualize the instruction corresponding to the selected instruction dataset using the human-machine interface. The instruction prompts a person to input a command to lower the milling / mixing roller, thus actuating at least one actuator assigned to the milling / mixing roller, causing the milling / mixing roller to be lowered. It is assumed that sufficient space remains for lowering the milling / mixing roller after exceeding the predetermined limit.

[0019] A preferred embodiment specifies that the control device for this course in the learning mode is configured to define a specific operating range suitable for the height of the milling / mixing roller by a minimum lower limit value of the minimum distance to be maintained from the reference point of the milling / mixing roller to the ground surface to be processed. Based on a command input by a person after instruction visualization for lowering the milling / mixing roller, a control command signal corresponding to the input command is generated only when the height of the milling / mixing roller is adjusted within the defined operating range. This signal is then assigned to at least one actuator of the milling / mixing roller to maintain the minimum distance from the ground surface. This ensures that if the predetermined limit is exceeded, the operator will not inadvertently drive the milling / mixing roller into the ground after being prompted to lower it. This further improves safety. Therefore, the operator can perform the mechanical function of adjusting the height of the milling / mixing roller in a realistic manner without any danger.

[0020] The control device can be configured to select individual instruction datasets one after another based on the operating status and / or operating mode of the driver and / or actuator detected by the status monitoring device. If the course is to contain multiple instruction datasets, the control device can specify a particular order in which the operator is prompted to enter specific commands.

[0021] One embodiment specifies that the control device is configured such that, if the status monitoring device detects that the height of the milling / mixing roller relative to the ground surface is less than a height limit, it selects a dataset from a dataset of instructions used for previous instructions and visualizes the instructions corresponding to the selected dataset using the human-machine interface. These instructions first prompt the operator to input a command to raise the milling roller, such that upon input of the command, at least one actuator assigned to the milling / mixing roller is actuated, causing the milling / mixing roller to be raised. Therefore, based on the height setting of the milling / mixing roller, the operator is only prompted to perform possible actions without driving the roller into the ground. Once the operator has raised the milling / mixing roller (and can also see this), the operator is automatically encouraged to perform the next exercise, which is to lower the milling / mixing roller again. To this end, the control device is configured to select an instruction dataset from the instruction dataset for instructions following previous instructions, and to visualize the instructions corresponding to the selected instruction dataset using the human-machine interface. These instructions prompt the operator to input a command to lower the milling / mixing roller, causing at least one actuator assigned to the milling / mixing roller to be actuated, thereby lowering the milling / mixing roller. However, the operator is only encouraged to proceed to the next exercise when a state monitoring device detects a defined operational state. For example, an animation for lowering the milling / mixing roller is only displayed when the milling / mixing roller has been raised at least a predetermined amount and / or a predetermined height. This provides further feedback into the process.

[0022] Therefore, the control device determines the visualization order of the dataset based on the operating state; that is, if the milling roller is initially in the lowered position, the operator is first prompted to raise the milling / mixing roller, and then lower it. Similarly, the control device can also be configured to prompt the operator to lower and then raise the milling / mixing roller if it is initially in the raised position, rather than the lowered position.

[0023] For the above-mentioned course including two instructions, the control device can again define a specific operating range suitable for the height of the milling / mixing roller by a minimum lower limit of the minimum distance to be maintained from the reference point of the milling / mixing roller to the ground surface to be processed, and based on the command for lowering the milling / mixing roller input by the operator after the visual instruction, a control command signal corresponding to the input command can be generated for distribution to at least one actuator of the milling / mixing roller, such that the minimum distance to the ground surface is maintained, only when the height of the milling / mixing roller is adjusted within the defined operating range.

[0024] The above embodiments are merely exemplary embodiments of multiple consecutive instructions. A course may include not only two, but also multiple consecutive instructions, which may be selected and invoked in a specific order based on different operating states or modes of the road construction machinery.

[0025] Another embodiment of the road construction machinery according to this utility model has a mechanical frame supported by a lifting device on the left side of the working direction, assigned to the left wheel or left track, and by a lifting device on the right side of the working direction, assigned to the right wheel or right track. Actuators are provided to operate the left and right lifting devices so that the height and / or inclination of the mechanical frame and the milling / mixing rollers arranged on the mechanical frame relative to the surface to be processed can be adjusted by actuating the actuators assigned to the lifting devices.

[0026] The learning mode suitable for this embodiment provides a course for practicing adjusting the height or lateral tilt of the mechanical frame. For the course on adjusting the height of the mechanical frame, the control device can be configured such that: if the status monitoring device detects that the height of the height-adjustable milling / mixing roller relative to the ground surface is less than a predetermined limit for a suitable height, it selects an instruction dataset from an instruction dataset stored in a storage device and visualizes the instruction corresponding to the selected instruction dataset using a human-machine interface. This instruction prompts the operator to input a command to raise the mechanical frame, such that after the command is input, the actuator assigned to the lifting device is actuated, causing the mechanical frame to be raised. Therefore, the operator can adjust the height of the milling / mixing roller without penetrating the ground.

[0027] When adjusting the height of the lifting device assigned to the wheel or chain, in addition to the position of the height-adjustable milling / mixing roller above the ground surface, the height of the milling roller housing surrounding the milling roller above the ground surface must also be taken into account.

[0028] When the status monitoring device detects that the height of the height-adjustable milling / mixing roller relative to the ground surface is greater than a predetermined limit for a suitable height, the control device can be configured to select an instruction dataset from the instruction dataset and visualize the instruction corresponding to the selected instruction dataset using the human-machine interface. This instruction prompts a person to input a command to lower the mechanical frame, causing the actuators assigned to the lifting device to be actuated after the command is input, thus lowering the mechanical frame. There is no need to worry that the milling / mixing roller will immediately penetrate the ground because its height is greater than the predetermined limit. However, similar to direct height adjustment of the milling / mixing roller, this can be excluded by defining a specific operating range suitable for the height of the milling / mixing roller by a minimum lower limit of the minimum distance to be maintained from the reference point of the milling / mixing roller to the ground surface to be processed. Based on the command input by the person after visualization of the instruction, a control command signal corresponding to the command input is generated only when the height of the milling / mixing roller is adjusted within the defined operating range to be allocated to the actuators of the lifting device, thereby maintaining the minimum distance to the ground surface.

[0029] While adjusting the height of the machine frame only poses a risk of the milling / mixing rollers accidentally penetrating the ground, improper adjustment of the tilt angle of the construction machinery can also lead to stability problems. In the worst-case scenario, the construction machinery may tip over. This can happen if, without a proper safety system, the construction machinery tilts to the wrong side just before the tipping point due to incorrect operation of the operating elements. Therefore, operators should be particularly familiar with tilt adjustment.

[0030] To avoid stability issues during learning height settings, another embodiment specifies that the condition monitoring device is configured to also detect the lateral tilt of the mechanical frame, particularly the lateral tilt relative to the surface to be processed, or the lateral tilt relative to the horizontal plane. The lateral tilt of the mechanical frame relative to the horizontal plane can be detected by the tilt sensor of the condition monitoring device; the lateral tilt of the mechanical frame relative to the ground can be determined by the condition monitoring device by detecting the operating state of the lifting devices, particularly by comparing the lifting states of each lifting device with each other. The control device is configured for this lesson in the learning mode such that if the condition monitoring device detects that the lateral tilt of the mechanical frame is to the right, it selects an instruction dataset from an instruction dataset stored in a storage device based on the lateral tilt, and visualizes the instruction corresponding to the selected instruction dataset using a human-machine interface. This instruction prompts the operator to input a command to roll the machine frame to the left in the working direction of the road milling machine, such that after the command is input, the actuators of the lifting devices assigned to the left side of the working direction are actuated, causing the mechanical frame to descend on the left, and / or the actuators of the lifting devices assigned to the right side of the working direction are actuated, causing the mechanical frame to rise on the right. If the operator follows the instruction, the operator will not operate the control element to roll to the right (which would cause instability in the road construction machinery).

[0031] When the condition monitoring device detects that the lateral tilt of the mechanical frame is tilted to the left, the control device selects an instruction dataset from the instruction dataset and visualizes the corresponding instruction dataset using the human-machine interface. The instruction prompts the operator to input a command to roll the mechanical frame to the right of the road milling machine in the working direction. After the command is input, the actuator of the lifting device assigned to the right side of the working direction is actuated, causing the mechanical frame to descend on the right side, and / or the actuator of the lifting device assigned to the left side of the working direction is actuated, causing the mechanical frame to rise on the left side.

[0032] Therefore, in the course on "Adjusting the Lateral Tilting of the Mechanical Frame," the risk of instability is reduced by detecting the mechanical tilt via a condition monitoring device and taking only a specific action based on the corresponding operating state of the relevant actuators. A specific sequence can also be specified when adjusting the tilt. For example, based on the initial position of the lifting device or the mechanical frame, the operator can be prompted to first roll the machine to one side, and then to the other.

[0033] When adjusting the lateral tilt of the mechanical frame, there is always a risk that the milling / mixing roller may inadvertently penetrate the ground or that the milling roller housing may collide with the ground. Therefore, the control device can also be configured to learn this process in a learning mode, such that a specific operating range suitable for the height of the milling / mixing roller is defined by a minimum lower limit of the minimum distance from the reference point of the milling / mixing roller to the ground surface to be processed. Based on command input by a person following a visual instruction, a control command signal corresponding to the command input is generated only when the height of the milling / mixing roller is adjusted within the defined operating range, and is then distributed to the actuator of the lifting device to maintain the minimum distance to the ground surface.

[0034] The control device can also be configured to define a specific operating range of lateral tilt suitable for the mechanical frame by a limit suitable for the maximum tilt, and based on a command input made by a person after the instruction is visualized, generate a control command signal corresponding to the command input for distribution to the actuator of the lifting device only when the mechanical frame tilts within the defined operating range, so as not to exceed the maximum tilt.

[0035] Before performing exercises involving changing the lateral tilt of the mechanical frame, it may be necessary to require the operator to first bring the mechanical frame to a stable starting position, particularly a horizontal or ground-parallel position, so that the operator can then roll the mechanical frame without posing any danger to one side or the other. If the condition monitoring device detects that the lateral tilt of the mechanical frame is to the left or right (i.e., the mechanical frame is not horizontally aligned or parallel to the ground), the control device can select a command dataset from the command dataset and visualize the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to input a command to roll the mechanical frame to the right or left of the road milling machine in the working direction, such that after the command is input, the actuators of the lifting devices assigned to the right side of the working direction are actuated until the mechanical frame has moved to a horizontal or ground-parallel position, and / or the actuators of the lifting devices assigned to the left side of the working direction are actuated until the mechanical frame has moved to a horizontal or ground-parallel position.

[0036] While the aforementioned learning mode curriculum involves adjusting the height and tilt of the mechanical frame, the learning mode curriculum can also involve steering of wheels or tracks. In this particular learning mode curriculum, the control device can be configured such that, if the state monitoring device detects that the wheel or track position is one where the wheel or track is turning to the right, it selects a command dataset from a stored command dataset and visualizes the corresponding command dataset using a human-machine interface. This command prompts the operator to input a command to turn the front wheel or track to the left in the working direction. Upon inputting the command, the actuators assigned to the wheel or track are actuated to turn the wheel to the left. Therefore, based on the operating state of the relevant actuators, the operator will only be prompted to perform exercises that appear appropriate for the current position of the wheels.

[0037] If the condition monitoring device detects that the position of the wheel or track unit is that the wheel or track unit is turned to the left, a dataset is selected from the instruction dataset stored in the storage device, and the instruction corresponding to the selected instruction dataset is visualized using a human-machine interface. The instruction prompts the operator to enter a command to turn the front wheel or track to the right in the working direction. Therefore, after the command is entered, the actuator assigned to the wheel or track is actuated, causing the wheel to turn to the right.

[0038] In one alternative embodiment, for steering learning, the wheels or tracks should first enter a straight-ahead position. Therefore, the control device is configured to select a command dataset from the command dataset if the condition monitoring device detects that the position of the wheels or tracks is a right-hand or left-hand turning position, and visualize the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to position the front wheels directly forward in the working direction, so that, upon input of the command, the actuators assigned to the front wheels or tracks are actuated, positioning the front wheels directly forward in the working direction. The control device may sequentially place this command before other commands (e.g., those related to milling or adjusting the height of the hybrid rollers or mechanical frame) to first bring the road construction machinery into a stable starting position for individual practice.

[0039] Advantageously, one lesson of the learning mode is the steering of the wheels or driving device, wherein the control device for this lesson of the learning mode is configured to: if the state monitoring device detects that the position of the wheel or track is a right-turning wheel or track position, select an instruction dataset from a plurality of instruction datasets stored by the storage device, and visualize the instruction corresponding to the selected instruction dataset using the human-machine interface, the instruction prompting the operator to input a command to turn the front wheel or track to the left in the working direction, such that after the command is input, the actuator assigned to the front wheel or track is actuated, causing the front wheel to turn to the left; or if the state monitoring device detects that the position of the wheel or track is a left-turning wheel or track position, select from the plurality of instruction datasets A command dataset is selected, and the corresponding command is visualized using a human-machine interface. This command prompts the operator to input a command to turn the front wheel or track to the right in the working direction, such that after inputting the command, the actuators assigned to the wheel or track are actuated, causing the front wheel to turn to the right. Alternatively, if the condition monitoring device detects that the position of the wheel or track is a right-turning or left-turning position, a command dataset is selected from multiple command datasets stored in a storage device, and the corresponding command is visualized using a human-machine interface. This command prompts the operator to position the front wheel directly forward in the working direction, such that after inputting the command, the actuators assigned to the front wheel or track are actuated, causing the front wheel to position directly forward in the working direction.

[0040] Road construction machinery may have two front wheels or tracks in the working direction and two rear wheels or tracks in the working direction, wherein the control unit provides settings suitable for different steering modes, and the condition monitoring device is configured to detect the position of the front wheels or tracks and the rear wheels or tracks and the set steering mode. In learning mode, the road construction machinery allows the operator to be prompted to perform specific steering movements based on the set steering mode.

[0041] The control device can be configured to select a command dataset from the command dataset if the steering pattern detected by the condition monitoring device is steering only the front wheels or tracks, and visualize the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to steer only the front wheels or tracks. Therefore, after the command is entered, the actuators assigned to the front wheels or tracks are actuated, causing only the front wheels or tracks to be steered. It should be noted that road construction machinery can have different operating elements or different positions of operating elements to cause the rear wheels or tracks to steer differently than the front wheels or tracks. Therefore, the road construction machinery displays the correct operating elements and their correct operation to the operator.

[0042] When the condition monitoring device detects that the steering mode is to turn the front wheel or track and the rear wheel or track in the same or opposite directions, a command dataset is selected from the command dataset, and the command corresponding to the selected command dataset is visualized using a human-machine interface. The command prompts the operator to turn the front wheel or track and the rear wheel or track in the same or opposite directions. After the command is entered, the actuators assigned to the wheels or tracks are actuated, causing the front wheel or track and the rear wheel or track to turn in the same or opposite directions.

[0043] If the condition monitoring device detects that the steering pattern is that the front wheels or tracks and the rear wheels or tracks are steering independently of each other, it selects a command dataset from the command dataset and visualizes the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to steer the front wheels or tracks and the rear wheels or tracks independently of each other, so that after the command is entered, the actuators assigned to the front wheels or tracks or the rear wheels or tracks are actuated, causing the front wheels or tracks and the rear wheels or tracks to steer independently of each other. These commands may include two prompts to be visualized for the operator, one of which may be operating a first operating element and the other may be operating a second operating element, or it may be a prompt to move the operating elements to different positions so that the front drive and the rear drive can be steered independently of each other.

[0044] Advantageously, the road construction machinery has two front wheels or tracks in the working direction and two rear wheels or tracks in the working direction, and the control device provides settings for different steering modes, and the condition monitoring device is configured to detect the position of the front wheels or tracks and the rear wheels or tracks as well as the set steering mode, wherein: if the condition monitoring device detects that the steering mode is to turn only the front wheels or tracks, it selects a command dataset from a plurality of command datasets stored in the storage device, and visualizes the command corresponding to the selected command dataset using the human-machine interface, the command prompting the operator to turn only the front wheels or tracks, such that after the command is input, the actuators assigned to the front wheels or tracks are actuated, such that only the front wheels or tracks are turned; or if the condition monitoring device detects that the steering mode is that the front wheels or tracks and the rear wheels or tracks turn in opposite directions, it selects a command dataset from a plurality of command datasets, and visualizes the command corresponding to the selected command dataset using the human-machine interface, the command prompting the operator to turn both the front wheels or tracks and the rear wheels or tracks in opposite directions, such that after the command is input... Subsequently, the actuators assigned to the wheels or tracks are actuated, causing the front wheels or tracks and the rear wheels or tracks to turn in opposite directions; or, if the condition monitoring device detects that the steering pattern is that the front wheels or tracks and the rear wheels or tracks are turning in the same direction, a command dataset is selected from multiple command datasets, and the command corresponding to the selected command dataset is visualized using a human-machine interface. This command prompts the operator to cause both the front and rear wheels or tracks to turn in the same direction, so that after the command is input, the actuators assigned to the wheels or tracks are actuated, causing the front wheels or tracks to turn in opposite directions. The front wheel or track and the rear wheel or track steer; or if the condition monitoring device detects that the steering mode is that the front wheel or track and the rear wheel or track steer independently of each other, a command dataset is selected from multiple command datasets, and the command corresponding to the selected command dataset is visualized using the human-machine interface, the command prompting the operator to steer the front wheel or track and the rear wheel or track independently of each other, such that after the command is entered, the actuators assigned to the front wheel or track and the rear wheel or track are actuated, causing the front wheel or track and the rear wheel or track to steer independently of each other.

[0045] The drives and / or actuators used for steering wheels or tracks and for height adjustment of the machine frame or milling / mixing rollers can be hydraulic drives or actuators, such as hydraulic engines operated by hydraulic fluid or piston-cylinder arrangements. Road construction machinery may have a central drive unit that may include a drive engine, particularly an internal combustion engine, and the construction machinery may have at least one hydraulic pump and at least one pump distribution gear for supplying hydraulic fluid to the drives and / or actuators.

[0046] One embodiment specifies that the condition monitoring device is configured to detect the operation of the drive unit, i.e., to determine whether the drive and / or actuator are supplied with hydraulic fluid. In this embodiment, the control device may be configured to select a specific instruction dataset from the instruction dataset only when the condition monitoring device detects operation of the drive engine, and to use a human-machine interface to visualize the instructions corresponding to the selected instruction dataset. This ensures that the operator is prompted to enter commands only when the relevant drive and / or actuator are actually operated after the command has been entered, in order to perform the corresponding mechanical function.

[0047] However, if the condition monitoring device does not detect operation of the drive engine, the control device can select a command dataset from the command dataset and visualize the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to enter a command to engage the drive engine or drive unit, especially the internal combustion engine, so that the operator engages the drive engine before performing a specific mechanical function.

[0048] Advantageously, the drive and / or actuator is a hydraulic drive or hydraulic actuator, and the road construction machinery has a drive engine for driving at least one hydraulic pump for supplying hydraulic fluid to the drive and / or actuator, wherein the condition monitoring device is configured to detect operation of the drive engine; and the control device is configured to, if the condition monitoring device does not detect operation of the drive engine, select an instruction dataset from a plurality of instruction datasets and visualize the instruction corresponding to the selected instruction dataset using the human-machine interface, the instruction prompting a person to input a command to activate the drive engine, thereby activating the drive engine.

[0049] In various embodiments, the human-machine interface may include one or more mechanical or electrical controllers (which may take different operating positions) and / or multiple displays. Operating elements may be joysticks, steering wheels, pedals, switches, buttons, etc. Indicators may be displays, light panels, signal lights, etc. The human-machine interface may also be or include a touchscreen.

[0050] The human-machine interface may have operating elements for inputting commands to adjust the height of the milling / mixing roller relative to the mechanical frame. The operating elements are designed to be in a neutral position, a first position, and a second position. The control device is designed such that, when the operating element is in the neutral position, it does not generate control command signals for at least one actuator of the milling / mixing roller, keeping the milling / mixing roller in its currently set position. The control device may also be designed to generate control command signals for at least one actuator of the milling / mixing roller when the operating element is in the first position, causing the milling / mixing roller to be raised, and to generate control command signals for at least one actuator of the milling / mixing roller when the operating element is in the second position, causing the milling / mixing roller to be lowered. Using such operating elements, the visualization of instructions on the display can be accomplished through graphical representations (pictographs) showing the operator how to operate the operating elements to perform the desired mechanical function.

[0051] Advantageously, the human-machine interface has operating elements for inputting commands to adjust the height and tilt of the mechanical frame relative to the work surface. The operating elements are designed to be able to take on a neutral position, a first position, a second position, a third position, and a fourth position, wherein: when the operating element is in the neutral position, the control device is designed to not generate control command signals for the actuators of the front and rear lifting devices on the left and right sides of the work direction, such that the front and rear lifting devices on the left and right sides of the work direction remain in their currently set positions; when the operating element is in the first position, the control device for raising the mechanical frame is designed to generate control command signals for the actuators of the front and rear lifting devices on the left and right sides of the work direction, such that the front and rear lifting devices on the left and right sides of the work direction are raised; when the operating element is in the second position, the control device for lowering the mechanical frame is designed to generate control command signals for the actuators of the front and rear lifting devices on the left and right sides of the work direction. Control command signals are assigned to the actuators of the front and rear lifting devices on the left and right sides of the working direction, causing the front and rear lifting devices on the left and right sides of the working direction to be lowered; when the operating element is in the third position, the control device for rolling the mechanical frame to the left in the working direction is designed to generate control command signals for assigning to the actuators of the front and rear lifting devices on the left and right sides of the working direction, causing the front and rear lifting devices on the left side of the working direction to be lowered, and the front and rear lifting devices on the right side of the working direction to be raised; when the operating element is in the fourth position, the control device for rolling the mechanical frame to the right in the working direction is designed to generate control command signals for assigning to the actuators of the front and rear lifting devices on the left and right sides of the working direction, causing the front and rear lifting devices on the left side of the working direction to be raised, and the front and rear lifting devices on the right side of the working direction to be lowered.

[0052] To provide commands for turning only the front wheels or tracks, turning the front wheels or tracks and the rear wheels or tracks in the same direction, or turning the front wheels or tracks and the rear wheels or tracks in opposite directions, the human-machine interface may include operating elements designed as steering wheels. To enable the front wheels or tracks and the rear wheels or tracks to turn independently of each other, the human-machine interface may include operating elements designed as steering wheels for turning the front wheels or tracks and operating elements designed as joysticks for turning the rear wheels or tracks.

[0053] Completed lessons can be stored so that it is possible to check whether a specific lesson has been provided. In particular, for steering modes, the machine can "remember" which steering mode has been taught and then provide the remaining steering modes as the next lesson.

[0054] After completing the course, the road construction machinery should be in a safe operating condition to prepare for the assigned upcoming work. Therefore, some or all courses for practicing machinery functions can be designed so that the road construction machinery is in a safe operating condition at the end of the corresponding course, and / or the actual course for practicing machinery functions can be followed by instructions suitable for the operator to bring the road construction machinery into a safe operating condition.

[0055] To ensure the safe operation of road construction machinery, operators can be instructed to use the lifting device to adjust the lateral tilt of the machinery frame, ensuring the machinery is as level or parallel to the ground as possible. Additionally, operators can be instructed to use the lifting device to adjust the height of the machinery frame, ensuring a sufficient distance between the milling / mixing roller or milling roller housing and the ground so the machinery can begin moving immediately.

[0056] Some or all of the lessons for practicing mechanical functions can be set up to prepare road construction machinery for a specific job at the end of the lesson, or actual practical lessons can be followed by instructions for preparing construction machinery for a specific job. For example, when preparing for a specific job, the operator can be prompted to select a specific steering mode, such as a steering mode in which the front and rear wheels turn in opposite directions. Attached Figure Description

[0057] Several exemplary embodiments of the present invention will now be explained in more detail with reference to the accompanying drawings.

[0058] In the attached diagram:

[0059] Figure 1 This is a side view of an exemplary embodiment of the self-propelled road construction machinery according to the present invention;

[0060] Figure 2 This is a diagram illustrating the function of a control device used to visualize commands based on the operating states and modes of the drives and actuators of road construction machinery.

[0061] Figure 3 An exemplary embodiment of an operating element of a human-machine interface for road construction machinery is shown, the operating element being designed as a steering wheel for turning the wheels;

[0062] Figure 4An exemplary embodiment of the operating elements of the human-machine interface of road construction machinery is shown, which is formed as a joystick for adjusting the height of the milling / mixing roller and the height and tilt of the machine frame relative to the ground surface;

[0063] Figure 5 Shown in side view Figure 4 Operating elements;

[0064] Figure 6 This is a flowchart illustrating the learning mode of road construction machinery;

[0065] Figure 7A This is a visualization of the first command used to adjust the height of the milling / mixing roller relative to the ground surface;

[0066] Figure 7B This is a visualization of the second command used to adjust the height of the milling / mixing roller relative to the ground surface;

[0067] Figure 7C This is a visualization of the third command used to adjust the height of the milling / mixing roller relative to the ground surface;

[0068] Figure 8A This is a visualization of a first instruction for adjusting the height of the milling / mixing roller relative to the ground surface, as illustrated in another exemplary embodiment.

[0069] Figure 8B This is a visualization of the second command used to adjust the height of the milling / mixing roller relative to the ground surface;

[0070] Figure 8C This is a visualization of the third command used to adjust the height of the milling / mixing roller relative to the ground surface;

[0071] Figure 9A This is a visualization of the first command used to adjust the height of the mechanical frame relative to the ground surface;

[0072] Figure 9B This is a visualization of the second command used to adjust the height of the mechanical frame relative to the ground surface;

[0073] Figure 9C This is a visualization of the third command used to adjust the height of the mechanical frame relative to the ground surface;

[0074] Figure 10A This is a visualization of the first command used to adjust the tilt of the mechanical frame relative to the ground surface;

[0075] Figure 10B This is a visualization of the second command used to adjust the tilt of the mechanical frame relative to the ground surface;

[0076] Figure 10C This is a visualization of the third command used to adjust the tilt of the mechanical frame relative to the ground surface;

[0077] Figure 11A It is a visualization of the first command used to adjust the position of the front wheels;

[0078] Figure 11B This is a visualization of the second command used to adjust the position of the front wheels;

[0079] Figure 11C This is a visualization of the third command used to adjust the position of the front wheels;

[0080] Figure 12A This is a visualization of the instructions used to adjust the wheel position in "Front Wheel Steering" steering mode;

[0081] Figure 12B It is a visualization of the instructions used to adjust the wheel positions in opposite directions in the "front wheel and rear wheel steering" steering mode;

[0082] Figure 12C It is a visualization of the instructions used to adjust the wheel positions in the same direction in the "front and rear wheel steering" steering mode;

[0083] Figure 12D This is a visualization of the first command used to adjust the wheel position in a steering mode where the front wheels steer independently of the rear wheels. Detailed Implementation

[0084] Figure 1 The regenerator is shown in a side view as an example of a self-propelled road construction machine 1. This regenerator is described in detail in EP 2 977514 B1. Figure 2 The diagram shows the various components and functions of the road construction machinery.

[0085] The road construction machinery has a chassis 2, which includes a left front wheel 4, a right front wheel 5, a left rear wheel 6, and a right rear wheel 7 in the working direction 3. Each wheel is driven by a drive unit (…). Figure 1 (Not shown in the diagram) Driven by, for example, a hydraulic motor. On the regeneration machine, the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 are all steerable. Steering is achieved by actuators assigned to the wheels (…). Figure 1 (Not shown in the image) Execute. Figure 2 A highly simplified schematic diagram illustrates a drive unit 8 for driving the wheels, actuators 9A and 9B for steering the left front wheel 4 and right front wheel 5, and actuators 9C and 9D for steering the left rear wheel 6 and right rear wheel 7. The actuators for steering the wheels can be a piston / cylinder arrangement.

[0086] The left front lifting device 10, right front lifting device 11, left rear lifting device 12, and right rear lifting device 13 are respectively attached to the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7, and support the mechanical frame 14. This allows the height and / or tilt of the mechanical frame 14 relative to the surface 15 to be processed to be adjusted by retracting or extending the lifting devices. The lifting devices include actuators ( Figure 1 (Not shown in the image), the actuator is a hydraulically operated piston-cylinder arrangement. Figure 2 The actuators 16A and 16B of the left front lifting device 10 and the left rear lifting device 12 on the left side of the working direction 3 are shown in a highly simplified schematic diagram, and the actuators 16C and 16D of the right front lifting device 11 and the right rear lifting device 13 on the right side of the working direction 3.

[0087] A roller housing 17 is arranged between the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 on the mechanical frame. The roller housing 17 is open at the bottom and forms a milling / mixing chamber in which the milling / mixing roller 18 is located. In order to adjust the height (milling depth) of the milling / mixing roller 18 relative to the mechanical frame 14, a height adjustment device 19 is provided. In this exemplary embodiment, the height adjustment device 19 includes a hydraulically operated piston-cylinder arrangement structure 21, which is arranged on both sides of the mechanical frame 14 as actuators 20A and 20B, each having a piston 21A and a cylinder 21B. Figure 2 The actuators 20A and 20B of the height adjustment device 19 are shown in a highly simplified schematic diagram. The height of the milling / mixing roller 18 relative to the mechanical frame 14 or the ground surface 15 can be adjusted by actuating the piston 21A of the piston-cylinder arrangement 21, wherein the axis of the milling / mixing roller 18 moves in a circular path. Alternatively or additionally, the height of the milling / mixing roller 18 relative to the ground surface 15 can also be adjusted by retracting or extending the left front lifting device 10, right front lifting device 11, left rear lifting device 12, and right rear lifting device 13.

[0088] The drive 8 and actuators 9A, 9B, 9C, 9D or 16A, 16B, 16C, 16D or 20A, 20B for driving the left front wheel 4, right front wheel 5, left rear wheel 6, right rear wheel 7 and steering them, as well as the height adjustment device for the mechanical frame 14 or milling / mixing roller 18, are supplied with hydraulic fluid via hydraulic lines 22, which is provided by at least one hydraulic pump 23 driven by an internal combustion engine 24. Figure 2 ).

[0089] The operator's cab 25 is located on the mechanical frame 14, where a human-machine interface 26 is provided for the operator.

[0090] The road construction machinery has a control device 27 configured to generate control command signals for the drives 8 or actuators 9A, 9B, 9C, 9D or 16A, 16B, 16C, 16D or 20A, 20B of the left front wheel 4, right front wheel 5, left rear wheel 6, right rear wheel 7, left front lifting device 10, right front lifting device 11, left rear lifting device 12, right rear lifting device 13, and height adjustment device 19, respectively, and to generate control command signals for the internal combustion engine 24 and other components of the road construction machinery (not shown). The control device 27 may include multiple control units, one or more of which may be components of a central control unit (not shown) of the construction machinery. The control device may have, for example, a general-purpose processor, a digital signal processor (DSP) for continuous processing of digital signals, a microprocessor, an application-specific integrated circuit (ASIC), an integrated circuit composed of logic elements (FPGA), or other integrated circuits (ICs) or hardware components to perform control of the drives and actuators. Data processing programs (software) may run on the hardware components.

[0091] The control device 27 is connected to the human-machine interface 26 via data line 28 and to the storage device 30 via data line 29, allowing the control device to read data from the storage device. However, the storage device 30 can also be a component of the control device. Additionally, the control device 27 is connected to the status monitoring device 32 via data line 31; however, the status monitoring device 32 can also be a component of the control device 27 or a central control device. Control command signals from the control device 27 for the driver or actuator are transmitted via data line 51.

[0092] The condition monitoring device 32 is connected via data line 33 to the drive 8 and actuators 9A, 9B, 9C, 9D or 16A, 16B, 16C, 16D or 20A, 20B, and to sensors 34 assigned to the internal combustion engine 24. These sensors monitor the operating status or operating mode of the drive and actuators, as well as the internal combustion engine. The monitoring using the individual sensors is merely an exemplary embodiment illustrating the function. The operating status and operating mode can also be read from the central control system of the road construction machinery.

[0093] The status monitoring device 32 detects the operating status of the internal combustion engine 24 (i.e., whether the engine is on or off), detects the rotation of the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 via the wheel drive 8, detects the steering angle via the wheel actuators 9A, 9B, 9C, and 9D, detects the height of the milling / mixing roller 18 via the actuators 20A and 20B of the height adjustment device relative to the mechanical frame 14 or the ground surface 15, and detects the height and tilt of the mechanical frame 14 or the milling / mixing roller 18 via the actuators 16A, 16B, 16C, and 16D of the left front lifting device 10, right front lifting device 11, left rear lifting device 12, and right rear lifting device 13 relative to the ground surface 15.

[0094] The human-machine interface 26 includes multiple operating elements, among which... Figure 2 Only one first operating element (designed as, for example, a first button or switch 35) is shown for turning the internal combustion engine 24 on and off, a second operating element (designed as a steering wheel 36) for steering the left front wheel 4 and the right front wheel 5, a third operating element (designed as a joystick 37) for adjusting the height and tilt of the mechanical frame 14 relative to the ground surface 15 and the height of the milling / mixing roller 18 relative to the mechanical frame 14 and for steering the left rear wheel 6 and the right rear wheel 7, and a fourth operating element (designed as, for example, a second button or switch 38) for activating the learning mode, which will be described in more detail below.

[0095] Furthermore, the human-machine interface 26 includes a display 39 on which images, graphics, animations, or alphanumeric characters 40 can be displayed, such as illustrations of operable elements and animations showing how to operate the operable element to input commands. Instead of precise images of the corresponding operable elements, graphic representations such as pictographs can also be displayed on the display 39 to visualize specific instructions, which are intended to prompt the operator to input specific commands.

[0096] Figure 3 The steering wheel 36 is shown in a plan view, while Figure 4 and 5 With a floor plan ( Figure 4 ) and side view ( Figure 5 The control lever 37 is shown. The steering wheel 36 can be used to steer the left front wheel 4 and right front wheel 5 of the road milling machine, wherein a first steering mode can be predetermined where only the left front wheel 4 and right front wheel 5 steer (front wheel steering), a second steering mode where the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 steer in opposite directions (front and rear wheels steer in opposite directions), and a third steering mode where the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 steer in the same direction (front and rear wheels steer in opposite directions, "crab steering"). The control lever 37 can be pivoted left or right to steer only the left rear wheel 6 and right rear wheel 7. Figure 4The control lever 37 is shown in the left pivot position. Therefore, in the fourth steering mode, the left front wheel 4 and the right front wheel 5 (in the "front wheel steering" steering mode) can be steered independently of each other by turning the steering wheel 36, and the left rear wheel 6 and the right rear wheel 7 can be steered independently of each other by turning the control lever 37.

[0097] To adjust the height and tilt of the mechanical frame 14 relative to the ground surface 15, the joystick 37 has an operation button 37A on its top. The operation button 37A can be in a neutral position and can be tilted in four directions: up and down, and left or right. Figure 4 By tilting the control button 37A forward, the left front lifting device 10, right front lifting device 11, left rear lifting device 12, and right rear lifting device 13 all extend, raising the mechanical frame 14. Conversely, by tilting the control button 37A backward, the left front lifting device 10, right front lifting device 11, left rear lifting device 12, and right rear lifting device 13 all retract, lowering the mechanical frame 14. By tilting the control button 37A to the left, the left front lifting device 10 and left rear lifting device 12 on the left side of the working direction 3 retract and / or the right front lifting device 11 and right rear lifting device 13 on the right side of the working direction extend, tilting the mechanical frame 14 to the left. Furthermore, by tilting the control button 37A to the right, the left front lifting device 10 and left rear lifting device 12 on the left side of the working direction extend and / or the right front lifting device 11 and right rear lifting device 13 on the right side of the working direction retract, tilting the mechanical frame to the right. In the neutral position, the left front lifting device 10, the right front lifting device 11, the left rear lifting device 12, and the right rear lifting device 13 do not move.

[0098] To adjust the height of the milling / mixing roller 18 relative to the mechanical frame 14, a toggle switch 37B is located on the underside of the control lever. Figure 5 It can be in a neutral position and can be tilted forward or backward. By tilting the toggle switch 37B forward, the milling / mixing roller 18 is raised, and by tilting it backward, the milling / mixing roller 18 is lowered. In the neutral position, the milling / mixing roller 18 does not move.

[0099] The learning model for road construction machinery is described in detail below. Figure 6 A flowchart illustrating the learning mode is shown. Control device 27 is configured to execute... Figure 6 The steps are shown in the figure.

[0100] By pressing the second button or switch 38 on the human-machine interface, the operator can switch the road construction machinery to learning mode, which can be recognized by the control device 27 (step A: "Start Learning Mode"). For safety reasons, the control device 27 can be configured to deactivate the actuators 8 used to drive the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7, for example, by not supplying them with hydraulic fluid, so that the construction machinery cannot start moving, which can be detected by the monitoring device 32.

[0101] The learning mode includes multiple courses. In this exemplary embodiment, the learning mode includes: a first course 1.0 for learning how to adjust the height of the milling / mixing roller 18 relative to the mechanical frame 14; a second course 2.0 for learning how to adjust the height of the mechanical frame 14 relative to the ground surface 15; a third course 3.0 for rolling the mechanical frame 14; and a fourth course 4.0 for steering the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7. Each course 1.0, 2.0, 3.0, and 4.0 includes multiple instruction datasets 1.0.1, 1.0.2, 1.0.3, ... stored in the storage device 30. Figure 2 The illustration shows four courses 1.0, 2.0, 3.0, and 4.0 as examples, each of which includes multiple instruction datasets 1.0.1, 1.0.2, 1.0.3, ... Each instruction dataset 1.0.1, 1.0.2, 1.0.3, ... contains data on instructions for the operator to input commands to be visualized using the human-machine interface 26.

[0102] The operator is provided with the aforementioned courses 1.0, 2.0, 3.0, and 4.0, for example, as icon graphics displayed on monitor 39, from which the operator can select a course, such as the first course 1.0 for learning the height adjustment of the milling-mixed roller 18, which will be referred to below. Figures 7A to 7C Provide a description (Step B: "Select Course").

[0103] After selecting the course "Height Adjustment of Milling Roller", the control device 26 first reads the datasets assigned to course 1.0 from the instruction datasets 1.0.1, 1.0.2, 1.0.3... stored in the storage device 30 (step C: "Read the datasets from the storage device"), and the control device determines the operating status or operating mode associated with the course to be assigned to the dataset (step D: "Determine the associated operating status or operating mode").

[0104] Then, the control device 27 determines the current operating state of the relevant operating state or operating mode by evaluating the data (signals) of the sensors 34 assigned to the relevant drivers 8 or actuators 9A, 9B, 9C, 9D or 16A, 16B, 16C, 16D or 20A, 20B (step E: "determine the current operating state or operating mode").

[0105] Based on the current operating state or mode, the control device 27 processes various instruction datasets 1.0.1, 1.0.2, 1.0.3… to visualize the instructions on the display 39. Based on the current operating state or mode, the control device selects a specific instruction dataset (prompting for a specific command) (step F: “Select Specific Dataset”). Then, the dataset is visualized on the display 39 (step G: “Visualize Dataset”).

[0106] Then check whether all data records have been processed (step H: "Have data records been processed?"). If not, determine the current operating state or operating mode again (step E: "Determine the current operating state or operating mode"), select a specific instruction dataset based on the current operating state or operating mode (step F: "Select a specific dataset"), and then visualize the dataset on display 39 (step G: "Visualize dataset").

[0107] The selection and visualization of a specific dataset continues until all datasets have been processed (step: H "Datasets have been processed?"). The course ends when all data records have been processed (step: I "End").

[0108] refer to Figures 7A to 7C The following exemplary embodiments are used to explain the operations summarized above, wherein the various parts are identified by the same reference numerals as in the preceding figures.

[0109] Figure 7A A milling / mixing roller 18 is shown on the upper left, which can be height-adjusted relative to the mechanical frame 14 by actuators 20A, 20B of a height adjustment device 19, which in this exemplary embodiment is a piston-cylinder arrangement 21, and a display 39 with a graphical human-machine interface 26 is shown on the upper right.

[0110] The operational statuses related to the course are the operating status of the internal combustion engine 24 and the operating status of the height adjustment device 19 of the milling / mixing roller 18. The current operational status is recorded by the status monitoring device 32. The status monitoring device 32 determines that the internal combustion engine 24 is not engaged, and the height of the lower edge 40 of the milling / mixing roller 18 relative to the ground surface 15 is less than a predetermined limit 41. The height of the lower edge 40 of the milling / mixing roller 18 and the limit 41 are within... Figures 7A to 7C The middle is indicated by a dashed line.

[0111] The control unit 27 first checks whether the internal combustion engine 24 is engaged. Since the internal combustion engine 24 is not engaged, the control unit 27 selects instruction dataset 1.0.1 from instruction datasets 1.0.1, 1.0.2, 1.0.3… and visualizes the corresponding instruction on the display 39. This instruction prompts the operator to actuate the first switch or button 35 to engage the internal combustion engine. This is done via the display… Figure 7A The pictogram shown illustrates the first switch or button 35 next to the lever 37 for turning the internal combustion engine 23 on and off. The shape and arrangement of the button or switch and lever in the graphic representation on the display 39 correspond to their shape and arrangement on the human-machine interface 26 (control panel), so that the operator can see which switch will be actuated. Figure 7A Such an animation is shown only as an example. Instead of a simplified graphical representation, the operating elements can also be realistically displayed on the monitor. The operator can be encouraged to operate the first switch or button 35, for example, by its flashing, which... Figure 7A The instruction dataset is indicated by circle 42 within the dashed line. However, if the engine is already engaged, this instruction dataset will not be selected or displayed.

[0112] If the condition monitoring device 32 detects that the internal combustion engine 24 is turned on and the lower edge 40 of the milling / mixing roller 18 is less than a predetermined limit 41 relative to the ground surface 15, then a display is shown on the display 39. Figure 7B The pictogram shown indicates that tilting the joystick upwards to raise the milling / mixing roller 18 is indicated by an upward-pointing arrow 43 (located below the joystick 37 and next to the flashing toggle switch 37B). Because the milling / mixing roller is raised, it will not collide with the ground. Here, as in all the following figures, the pictogram is to be understood only as indicating to the operator the operating element to be operated and how to operate it.

[0113] Figure 7C The illustration shows a situation where the condition monitoring device 23 detects that the internal combustion engine 24 is engaged and the height of the milling / mixing roller relative to the ground surface is greater than a predetermined limit 41. A downward-pointing arrow 44 indicates to the operator that they should tilt the toggle switch 37B downwards to lower the milling / mixing roller 18.

[0114] When the milling / mixing roller 18 is lowered, there is a risk that it may unintentionally penetrate the ground. Therefore, the control device 27 can provide a specific operating range suitable for the height of the milling / mixing roller 18 by limiting the minimum distance 45 to be maintained between the lower edge 40 of the milling / mixing roller 18 and the ground surface 15. In this case, the milling / mixing roller 18 is only lowered when its height is within the defined operating range (i.e., when the height of the milling / mixing roller 18 is within the defined operating range). Figure 7CWhen the minimum lower limit 45 (in the shaded area above the minimum lower limit) is adjusted, the control device 27 generates control command signals for the actuators 20A and 20B of the milling / mixing roller 18 to maintain a minimum distance from the ground surface 15. Therefore, when the lower limit 45 is reached, the milling / mixing roller 18 will automatically stop its downward movement. Thus, the operator can practice height adjustment of the milling / mixing roller 18 without any danger.

[0115] Figures 8A to 8C Another exemplary embodiment is shown, wherein the control device 27 is configured to prompt the operator to enter multiple commands one after another. In the first step, since the engine is not turned on, the operator is prompted to turn on the internal combustion engine 24 ( Figure 8A After the engine is turned on, in the second step, the operator is prompted by an upward-pointing arrow 43 to raise the milling / mixing roller 18, since the height of the lower edge 40 of the milling / mixing roller 18 is less than the predetermined first (lower) limit 41. Figure 8B If the height of the lower edge 40 of the milling / mixing roller 18 is equal to the predetermined second (upper) limit 46, then in the third step, the operator is prompted by the downward-pointing arrow 44 to lower the milling / mixing roller 18. Figure 8C When the lower edge 40 of the milling / mixing roller 18 reaches the lower minimum limit 45, the milling / mixing roller 18 automatically stops moving. After reaching the lower limit, the operator can be prompted to raise the milling / mixing roller 18 again. After the milling / mixing roller 18 is raised again, the operator can be prompted to lower the milling / mixing roller 18 again. These exercises can be repeated until the operator exits the learning mode. However, the learning mode can also end after a certain number of exercises. It can be seen that the control device 27 determines a specific sequence of command input, i.e., raising and then lowering the milling / mixing roller, based on the starting position of the milling / mixing roller, i.e., based on the height of its lower edge 40.

[0116] The following will refer to Figures 9A to 9C The course describes a learning pattern used to adjust the height of the mechanical frame relative to the ground surface, and will refer to... Figures 10A to 10C The description describes a learning mode for adjusting the lateral tilt of the mechanical frame by operating actuators 16A, 16B, 16C, and 16D associated with the left front lift 10, right front lift 11, left rear lift 12, and right rear lift 13. In the accompanying drawings, the mechanical frame 14 with the milling / mixing roller 18 is shown only schematically.

[0117] In the first step ( Figure 9A In this context, because the engine is not switched on, a prompt is made to the operator (e.g., ...). Figure 7A and 8A(Middle) Turn on the internal combustion engine 24. After turning on the engine 24 by actuating the flashing first switch or button 35, in the second step, the operator is prompted to raise the mechanical frame 14 by flashing the operation button 37A on the top of the lever 37, thereby raising the milling / mixing roller 18 arranged on the mechanical frame, because the height of the lower edge 40 of the milling / mixing roller 18 is less than a predetermined first (lower) limit 41. Figure 9B The upward-pointing arrow 43' indicates that the operation button 37A will tilt forward. In the third step, when the lower edge 40 of the milling / mixing roller 18 reaches a predetermined second (upper) limit 46, the operator is prompted by the downward-pointing arrow 44' to lower the mechanical frame 14 (9C). When the lower edge 40 of the milling / mixing roller 18 has reached the minimum lower limit, the mechanical frame 14 automatically stops moving. Once the lower limit is reached, the operator can be prompted to raise the mechanical frame again. After the mechanical frame is raised again, the operator can be prompted to lower the mechanical frame again. These exercises can be repeated until the operator exits the learning mode. However, the learning mode can also end after a certain number of exercises.

[0118] The condition monitoring device 32 is configured to detect the tilt of the mechanical frame 14 relative to the ground surface 15. If the condition monitoring device 32 detects that the mechanical frame 14 is tilted to the left ( Figure 10A In the first step, arrow 47 pointing to the right prompts the operator to tilt the operating button 37A, located at the top of the joystick 37, to the right, causing the mechanical frame 14 to roll to the right. In the second step, arrow 48 pointing to the left prompts the operator to tilt the operating button 37A, located at the top of the joystick, to the left, causing the mechanical frame 14 to roll to the left. Figure 10B In the third step, the operator can be prompted to roll the mechanical frame back to the right. Figure 10C ).

[0119] The control device specifies that control command signals for actuating actuators 16A, 16B, 16C, and 16D of the lifting device are generated only when the lower edge 40 of the milling / mixing roller is above the minimum lower limit, i.e., when the milling / mixing roller is within the defined operating range. Figures 10A to 10C The situation in the exemplary embodiment is shown (although greatly exaggerated). Therefore, the operator can also practice adjusting the height and tilt of the mechanical frame without any danger.

[0120] The following will refer to Figure 11A and Figure 11B This describes a course for learning the steering mode of the left front wheel (4) and right front wheel (5). Figure 11A and Figure 11B The left front wheel (4) and right front wheel (5) are shown only schematically. The steering angle is indicated by α.

[0121] The control device 27 is configured to generate control command signals to actuate the actuators 9A and 9B assigned to the left front wheel 4 and the right front wheel 5.

[0122] The condition monitoring device 32 is configured to detect the steering angle α. If the left front wheel 4 and right front wheel 5 of the condition monitoring device 32 turn to the left, it prompts the operator to turn the steering wheel by flashing an icon depicting the steering wheel 36. This icon is then changed by... Figures 11A to 11C The circle in the diagram shows the direction the steering wheel 36 should turn, indicated by the right-pointing arrow 49. Figure 11A However, if the wheel turns to the right, the operator is prompted to turn the steering wheel to the left. Figure 11B This is indicated by a left-pointing arrow 50. Therefore, the cues for turning the steering wheel 36 are based on the initial positions of the left front wheel 4 and the right front wheel 5. When the steering wheel 36 is turned, the operator can observe how the front wheels are turning by looking at the wheels. The wheel positions are also visualized on the display 39.

[0123] Figure 11C An exemplary embodiment is shown, wherein the control device selects a set of instructions to display a corresponding pictogram on the display 39 of the human-machine interface 26. When the status monitoring device 32 determines that the left front wheel 4 and the right front wheel 5 are turning left or right, the pictogram prompts the operator to turn the steering wheel 36 to keep the left front wheel 4 and the right front wheel 5 turning forward. The wheels can also be straightened by pressing a separate button, after which the wheels will automatically straighten.

[0124] In another embodiment, the condition monitoring device 32 monitors the steering angle α of the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 in the working direction 3, and actuators 9A, 9B, 9C, and 9D are assigned to it for actuating said wheels. In this embodiment, the control device 27 provides settings for different operating modes, which are different steering modes. The condition monitoring device 32 is also configured to detect the set steering mode.

[0125] Figure 12A This illustrates a scenario where the steering mode is set to "Front Wheel Steering". If the status monitoring device 32 detects the steering mode "Front Wheel Steering", the control device 27 selects a command dataset to display a corresponding pictogram on the human-machine interface display. This pictogram prompts the operator to steer the left front wheel 4 and the right front wheel 5, for example, through a flashing steering wheel 36 on the display 39. This could be a prompt to turn left and / or right and / or forward, such as... Figure 11A , Figure 11B or Figure 11CAs shown in the diagram, control device 27 can select relevant data records in a predetermined order. Therefore, the operator is shown that the left front wheel 4 and right front wheel 5 are steered using the steering wheel 36 instead of the lever 37. When the steering wheel 36 is turned, the operator can then observe the left front wheel 4, right front wheel 5, left rear wheel 6, right rear wheel 7, and / or the display 39 to see that only the left front wheel 4 and right front wheel 5 are steered.

[0126] Figure 12B The diagram illustrates a scenario where the steering mode "all-wheel steering" is set, with the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 all turning in opposite directions. If the status monitoring device 32 detects the set steering mode "all-wheel steering," the control device 27 selects a command dataset to display a corresponding pictogram on the display 39 of the human-machine interface 26. This pictogram prompts the operator to turn the steering wheel 36 in one direction or the other, for example, through flashing of the steering wheel 36 on the display 39. This demonstrates to the operator that the steering wheel 36 can be used to turn the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 in opposite directions. When the steering wheel 36 is turned, the operator can see the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 moving in opposite directions by observing the wheels and / or the display 39.

[0127] Figure 12C The diagram illustrates a "crab steering" mode, where the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 are turning in the same direction. If the status monitoring device 32 detects the "crab steering" mode, the control device 27 selects a command dataset to display a corresponding pictogram on the display 39 of the human-machine interface 26. This pictogram prompts the operator to turn the steering wheel, for example, by flashing an icon depicting the steering wheel 36. This indicates to the operator that the steering wheel is maneuvering all wheels in the same direction. When the steering wheel 36 is turned, the operator can immediately see by observing the wheels and / or the display 39 that the front and rear wheels are moving in the same direction.

[0128] Figure 12D The diagram illustrates a predetermined steering pattern in which the left front wheel 4, right front wheel 5, left rear wheel 6, and right rear wheel 7 can move independently of each other. When the status monitoring device 32 detects this steering pattern, the control device 27 selects a command dataset to display a corresponding pictogram on the display 39 of the human-machine interface 26. This pictogram prompts the operator to turn the steering wheel 36 and pivot the joystick 37 to the left or right, for example, through the flashing of icons depicting the steering wheel 36 and joystick 37. Figure 12DThe center is again indicated by a circle. This can also be prompted to the operator through animation, which encourages the operator to turn the steering wheel and pivot the lever in one direction or the other. By observing the left front wheel 4, right front wheel 5, left rear wheel 6, right rear wheel 7 and / or the display 39, the operator can immediately see the corresponding movement of the left front wheel 4 and right front wheel 5 when the steering wheel 36 is turned, and the corresponding movement of the rear wheel when the lever 37 is pivoted.

Claims

1. A self-propelled road construction machine, comprising: A mechanical frame (14) and a milling / mixing roller (18) for processing the ground, the mechanical frame (14) being carried by driveable, steerable wheels or tracks, the milling / mixing roller (18) being arranged on the mechanical frame and being adjustable in height relative to the ground surface to be processed; A driver and / or actuator (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B) associated with the wheel or track and the milling / mixing roller for driving the wheel or track and turning the wheel or track and adjusting the height of the milling / mixing roller (18) relative to the ground surface to be processed; A control device (27) configured to generate control command signals for the drive and / or actuators (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B) to drive the wheels or tracks and cause the wheels or tracks to turn and adjust the height of the milling / mixing rollers (18); Human-machine interface (26) for interacting with the control device (27); A storage device (30) that interacts with the control device (27); and A status monitoring device (32) interacts with the control device (27) and is configured to detect the operating status and / or operating mode of the drivers and / or actuators (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B); Its features are: Multiple instruction datasets (1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5) are stored in the storage device (30), each of which contains data for visualizing instructions using the human-machine interface (26) to allow personnel to input commands via the human-machine interface to adjust the position of the wheels or tracks and / or the height of the milling / hybrid roller (18) relative to the ground surface (15) to be processed; The control device (27) provides a learning mode having multiple courses (1.0, 2.0, 3.0, 4.0) for adjusting the position of the wheels or tracks and / or the height of the milling / hybrid rollers (18) by a person, wherein the control device is configured for at least one course of the learning mode such that: Based on the operating status and / or operating mode of the drivers and / or actuators (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B) detected by the status monitoring device (32), a specific instruction dataset is selected from the plurality of instruction datasets (1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5), and the instructions corresponding to the selected instruction dataset are visualized using the human-machine interface (26). as well as Based on the commands input by personnel using the human-machine interface (26) after the command visualization, control command signals corresponding to the command input are generated for the drives and / or actuators (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B) for driving the wheels or tracks and causing the wheels or tracks to turn and / or for adjusting the height of the milling / mixing rollers (18).

2. The self-propelled road construction machinery according to claim 1, characterized in that, One aspect of the learning mode is adjusting the height of the milling / hybrid roller (18) relative to the ground surface to be processed, wherein the control device (27) for this aspect of the learning mode is configured to: If the height of the milling / mixing roller relative to the ground surface detected by the state monitoring device (32) is less than a suitable height limit, an instruction dataset is selected from a plurality of instruction datasets stored in the storage device (30), and the instruction corresponding to the selected instruction dataset is visualized using the human-machine interface (26). The instruction prompts the operator to input a command to raise the milling / mixing roller (18), such that after the command is input, at least one actuator assigned to the milling / mixing roller is actuated, causing the milling / mixing roller to rise; or If the height of the milling / mixing roller relative to the ground surface detected by the condition monitoring device (32) is greater than a limit for a suitable height, an instruction dataset is selected from a plurality of instruction datasets, and the instruction corresponding to the selected instruction dataset is visualized using a human-machine interface (26), which prompts the operator to enter a command to lower the milling / mixing roller (18), such that after the command is entered, at least one actuator assigned to the milling / mixing roller is actuated, causing the milling / mixing roller to lower.

3. The self-propelled road construction machinery according to claim 2, characterized in that, The control device (27) for this course in the learning mode is configured as follows: A specific operating range suitable for the height of the milling / mixing roller (18) is defined by a limit on the minimum distance to be maintained from the reference point of the milling / mixing roller (18) to the ground surface to be processed. Based on a command input by a person to lower the milling / mixing roller after visualization of the instruction, a control command signal corresponding to the input command is generated only when the milling / mixing roller is adjusted in height within the defined operating range to maintain the minimum distance to the ground.

4. The self-propelled road construction machinery according to claim 2, characterized in that, The control device (27) for this course in the learning mode is configured such that if the state monitoring device (32) detects that the height of the milling / mixing roller relative to the ground surface is less than a height limit, For the previous instruction of the course in the learning mode, select an instruction dataset from the plurality of instruction datasets and visualize the instruction corresponding to the selected instruction dataset using the human-machine interface (26), the instruction prompting the person to enter a command to raise the milling / mixing roller (18), such that after the command is entered, at least one actuator assigned to the milling / mixing roller is actuated, causing the milling / mixing roller to rise; as well as The control device (27) is configured to select a dataset from the plurality of instruction datasets for use in an instruction following the previous instruction, and to visualize the instruction corresponding to the selected instruction dataset using the human-machine interface (26), the instruction prompting a person to input a command to lower the milling / mixing roller (18), such that upon input of the command, at least one actuator assigned to the milling / mixing roller is actuated to lower the milling / mixing roller, wherein a specific operating range suitable for the height of the milling / mixing roller (18) is defined by a limit of the minimum distance to be maintained from the reference point of the milling / mixing roller to the ground surface to be processed, and based on the command input by the person for lowering the milling / mixing roller after visualization of the instruction, a control command signal corresponding to the input command is generated for at least one actuator of the milling / mixing roller to maintain the minimum distance to the ground surface only when the milling / mixing roller is adjusted in height within the defined operating range.

5. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, The mechanical frame (14) is supported by a left-side lifting device associated with the left wheel or track in the working direction (3) and a right-side lifting device associated with the right wheel or track in the working direction, wherein actuators (16A, 16B, 16C, 16D) are provided for actuating the left-side lifting device and the right-side lifting device, such that the height of the mechanical frame (14) and the milling / mixing roller (18) arranged on the mechanical frame can be adjusted relative to the ground surface to be processed by actuating the actuators assigned to the lifting devices, wherein: The learning mode's curriculum is the adjustment of the height of the mechanical frame (14) relative to the ground surface to be processed, wherein the control device (27) is configured for this curriculum of the learning mode, such that: If the condition monitoring device (32) detects that the height of the milling / mixing roller (18) relative to the ground surface is less than a suitable height limit, it selects an instruction dataset from a plurality of instruction datasets stored in the storage device (30) and visualizes the instruction corresponding to the selected instruction dataset using the human-machine interface (26). The instruction prompts the operator to input a command to raise the mechanical frame, such that after the command is input, the actuators (16A, 16B, 16C, 16D) assigned to the lifting device are actuated, causing the mechanical frame (14) to rise; or If the height of the milling / mixing roller (18) relative to the ground surface detected by the condition monitoring device is greater than the limit of the suitable height, an instruction dataset is selected from multiple instruction datasets, and the instruction corresponding to the selected instruction dataset is visualized using a human-machine interface. The instruction prompts the personnel to enter a command to lower the mechanical frame, such that after the command is entered, the actuators (16A, 16B, 16C, 16D) assigned to the lifting device are actuated, causing the mechanical frame to lower.

6. The self-propelled road construction machinery according to claim 5, characterized in that, The control device for this course in the learning mode is configured to limit a specific operating range suitable for the height of the milling / mixing roller (18) by a limit on the minimum distance to be maintained from the reference point of the milling / mixing roller to the ground surface to be processed, and based on a command input by a person after a visual instruction, a control command signal corresponding to the input command is generated for the actuators (16A, 16B, 16C, 16D) only when the height of the milling / mixing roller (18) is adjusted within the limited operating range, thereby maintaining the minimum distance to the ground surface.

7. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, One aspect of the learning mode is the adjustment of the lateral tilt of the mechanical frame (14), wherein the control device (27) for this aspect of the learning mode is configured to: If the condition monitoring device (32) detects that the lateral tilt of the mechanical frame (14) is a rightward tilt, it selects an instruction dataset from a plurality of instruction datasets stored in the storage device (30) and visualizes the instruction corresponding to the selected instruction dataset using the human-machine interface (26). The instruction prompts the operator to input a command to roll the mechanical frame (14) to the left of the road milling machine along the working direction (3), such that after the command is input, the actuators (16A, 16B) of the lifting device assigned to the left side of the working direction are actuated, causing the mechanical frame (14) to descend on the left, and / or the actuators (16C, 16D) of the lifting device assigned to the right side of the working direction are actuated, causing the mechanical frame (14) to rise on the right; or If the condition monitoring device detects that the lateral tilt of the mechanical frame is tilted to the left, it selects an instruction dataset from multiple instruction datasets and uses the human-machine interface (26) to visualize the instruction corresponding to the selected instruction dataset. The instruction prompts the operator to input a command to make the mechanical frame (14) roll to the right in the working direction of the road milling machine. After the command is input, the actuators (16C, 16D) of the lifting device assigned to the right side of the working direction (3) are actuated, causing the mechanical frame (14) to descend on the right side, and / or the actuators (16A, 16B) of the lifting device assigned to the left side of the working direction are actuated, causing the mechanical frame (14) to rise on the left side.

8. The self-propelled road construction machinery according to claim 7, characterized in that, The control device for this course in the learning mode is configured to limit a specific operating range of the height of the height-adjustable milling / mixing roller (18) by a limit on the minimum distance to be maintained from the reference point of the milling / mixing roller to the ground surface to be processed, and based on a command input by a person after a visual instruction, a control command signal corresponding to the input command is generated only when the height of the milling / mixing roller is adjusted within the limited operating range, so as to maintain the minimum distance to the ground surface.

9. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, One lesson of the learning mode is the steering of the wheels or driving device, wherein the control device (27) for this lesson of the learning mode is configured to: If the condition monitoring device (32) detects that the position of the wheel or track is a right-turning wheel or track, it selects an instruction dataset from a plurality of instruction datasets stored by the storage device (30) and uses the human-machine interface (26) to visualize the instruction corresponding to the selected instruction dataset. The instruction prompts the operator to input a command to turn the front wheel or track to the left in the working direction (3). After the command is input, the actuators (9A, 9B) assigned to the front wheel or track are actuated, causing the front wheel to turn to the left. or If the condition monitoring device (32) detects that the position of the wheel or track is the position of the wheel or track turning to the left, it selects an instruction dataset from multiple instruction datasets and uses a human-machine interface to visualize the instruction corresponding to the selected instruction dataset. The instruction prompts the personnel to enter a command to turn the front wheel or track to the right in the working direction (3). After the command is entered, the actuators (9A, 9B) assigned to the wheel or track are actuated, causing the front wheel to turn to the right. or If the condition monitoring device (32) detects that the position of the wheel or track is to the right or left, it selects an instruction dataset from a plurality of instruction datasets stored in the storage device and visualizes the instruction corresponding to the selected instruction dataset using a human-machine interface. The instruction prompts the operator to position the front wheel directly in front of the working direction (3), so that after the command is entered, the actuators (9A, 9B) assigned to the front wheel or track are actuated, so that the front wheel is positioned directly in front of the working direction.

10. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, The road construction machinery has two front wheels or tracks in the working direction and two rear wheels or tracks in the working direction, and the control device (27) provides settings for different steering modes, and the status monitoring device (32) is configured to detect the positions of the front wheels or tracks and the rear wheels or tracks as well as the set steering mode, wherein, If the condition monitoring device (32) detects that the steering mode is to steer only the front wheels or tracks, it selects an instruction dataset from a plurality of instruction datasets stored in the storage device and visualizes the instruction corresponding to the selected instruction dataset using the human-machine interface. The instruction prompts the operator to steer only the front wheels or tracks, such that after the command is entered, the actuators assigned to the front wheels or tracks are actuated, causing only the front wheels or tracks to be steered; or If the condition monitoring device (32) detects that the steering pattern is that the front wheel or track and the rear wheel or track are turning in opposite directions, it selects a command dataset from multiple command datasets and visualizes the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to turn the front wheel or track and the rear wheel or track in opposite directions, so that after the command is entered, the actuators (9A, 9B, 9C, 9D) assigned to the wheels or tracks are actuated, causing the front wheel or track and the rear wheel or track to turn in opposite directions; or If the condition monitoring device (32) detects that the steering pattern is that the front wheel or track and the rear wheel or track are turning in the same direction, it selects a command dataset from multiple command datasets and visualizes the command corresponding to the selected command dataset using a human-machine interface. This command prompts the operator to turn both the front wheel or track and the rear wheel or track in the same direction, so that after the command is entered, the actuators (9A, 9B, 9C, 9D) assigned to the wheels or tracks are actuated, causing the front wheel or track and the rear wheel or track to turn; or If the condition monitoring device (32) detects that the steering mode is that the front wheel or track and the rear wheel or track steer independently of each other, it selects an instruction dataset from a plurality of instruction datasets and uses the human-machine interface (26) to visualize the instruction corresponding to the selected instruction dataset, the instruction prompting the operator to steer the front wheel or track and the rear wheel or track independently of each other, such that after the command is entered, the actuators (9A, 9B, 9C, 9D) assigned to the front wheel or track and the rear wheel or track are actuated, so that the front wheel or track and the rear wheel or track steer independently of each other.

11. The self-propelled road construction machinery according to claim 5, characterized in that, The human-machine interface (26) has operating elements for inputting commands to adjust the height and tilt of the mechanical frame (14) relative to the surface to be processed. The operating elements are designed to be able to take on a neutral position, a first position, a second position, a third position, and a fourth position. When the operating element is in the neutral position, the control device (27) is designed such that no control command signals are generated for the actuators (16A, 16B, 16C, 16D) of the front and rear lifting devices on the left and right sides of the working direction, so that the front and rear lifting devices on the left and right sides of the working direction remain in the current set position. When the operating element is in the first position, the control device (27) for lifting the mechanical frame (14) is designed to generate control command signals for the actuators (16A, 16B, 16C, 16D) of the front and rear lifting devices on the left and right sides of the working direction, so that the front and rear lifting devices on the left and right sides of the working direction are raised. When the operating element is in the second position, the control device (27) for lowering the mechanical frame (14) is designed to generate control command signals for the actuators (16A, 16B, 16C, 16D) of the front and rear lifting devices on the left and right sides of the working direction, so that the front and rear lifting devices on the left and right sides of the working direction are lowered. When the operating element is in the third position, the control device (27) for rolling the mechanical frame to the left in the working direction is designed to generate control command signals for the actuators (16A, 16B, 16C, 16D) of the front and rear lifting devices on the left and right sides in the working direction, such that the front and rear lifting devices on the left side of the working direction are lowered, and the front and rear lifting devices on the right side of the working direction are raised. When the operating element is in the fourth position, the control device for rolling the mechanical frame to the right in the working direction is designed to generate control command signals for the actuators of the front and rear lifting devices on the left and right sides in the working direction, such that the front and rear lifting devices on the left side in the working direction are raised, and the front and rear lifting devices on the right side in the working direction are lowered.

12. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, The human-machine interface (26) for inputting commands to adjust the height of the milling / mixing roller (18) relative to the mechanical frame has operating elements designed such that the operating elements can take on a neutral position, a first position, and a second position, wherein, When the operating element is in the neutral position, the control device (27) is designed not to generate control command signals for at least one actuator (20A, 20B) of the milling / mixing roller (18), so that the milling / mixing roller (18) remains in the current set position; When the operating element is in the first position, the control device (27) is designed to generate control command signals for distribution to at least one actuator (20A, 20B) of the milling / mixing roller (18), causing the milling / mixing roller (18) to be lifted; and When the operating element is in the second position, the control device (27) is designed to generate control command signals for distribution to at least one actuator (20A, 20B) of the milling / mixing roller (18) such that the milling / mixing roller (18) is lowered.

13. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, The human-machine interface (26) used for inputting commands. In order to steer only the front wheel or track, the front wheel or track and the rear wheel or track in the same direction, or the front wheel or track and the rear wheel or track in opposite directions, an operating element designed as a steering wheel (36) is provided. To enable the front wheel or track and the rear wheel or track to steer independently of each other, there is an operating element with a steering wheel (36) designed to steer the front wheel or track and an operating element with a lever (37) designed to steer the rear wheel or track.

14. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, The actuators and / or actuators (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B) are hydraulic actuators or hydraulic actuators, and the road construction machinery has a drive engine (24) for driving at least one hydraulic pump (23) for supplying hydraulic fluid to the actuators and / or actuators (8, 9A, 9B, 9C, 9D, 16A, 16B, 16C, 16D, 20A, 20B), wherein the condition monitoring device (32) is configured to detect the operation of the drive engine (24); and The control device (27) is configured to select an instruction dataset from a plurality of instruction datasets if the status monitoring device (32) does not detect operation of the drive engine, and to visualize the instruction corresponding to the selected instruction dataset using the human-machine interface (26), the instruction prompting the person to input a command to turn on the drive engine (24), so that the drive engine is turned on.

15. The self-propelled road construction machinery according to any one of claims 1 to 4, characterized in that, The human-machine interface (26) for visualizing the instruction dataset to prompt the user to input commands has a display (39), on which the visualization of the instruction dataset is performed using a graphical representation (40).

16. The self-propelled road construction machinery according to claim 15, characterized in that, The graphic representation (40) is a pictograph.

Images