Soil Compactor

Abstract

The present invention provides a soil compactor that supplies and displays information indicating the condition of the ground to be compacted, enabling operators to easily and accurately carry out the compaction process. [Solution] The soil compactor is installed in a ground observation window (36) and includes a head-up display (54). The display (54) is configured to display processing status information representing the processing status of the area (26) of the ground (24) to be compacted, located in front of the compactor (10) in the direction of movement (B). The processing status information includes a perspective projection of the area (26) of the ground (24) to be compacted, located in front of the compactor (10) in the direction of movement (B), which is either already performed or to be performed by the compactor (10) on the area (28, 58') of the ground (24) to be compacted or / or a perspective projection of the area (26) of the ground (24) to be compacted, located in front of the compactor (10) in the direction of movement (B), which distinguishes and depicts areas (62, 62') with different conditions of the ground (24) to be compacted.

Description

Technical Field

[0005]

[0001] The present invention relates to a soil compactor having a compaction structure movable on a ground to be compacted, for example, an asphalt material, and the compaction structure is provided with at least one compaction roller rotatable around a roller rotation axis and an operator cab having at least one operation workplace for an operator.

Background Art

[0002] Such a soil compactor is known from Patent Document 1. When the soil compactor moves on the ground to be compacted, it is detected by continuously detecting the position of the soil compactor that the soil compactor has passed over the ground to be compacted, and it is displayed on a display device such as a laptop, a tablet PC, a smartwatch, smart glasses, or a head-up display, or projected into the field of view of an operator operating the soil compactor.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a soil compactor in which information representing a treatment state of a ground to be compacted is supplied and displayed so that an operator can more easily and accurately perform a compaction process.

Means for Solving the Problems

[0005] According to the present invention, the problem is solved by a soil compactor including a compaction structure that is movable over the ground to be compacted, the compaction structure includes at least one compaction roller that is rotatable around a roller rotation axis, and a control panel with at least one operating workspace for an operator, the control panel is provided with at least one ground observation window disposed in at least one operating workspace, and a field of view is opened through at least one ground observation window for observing the area of ​​the ground to be compacted located in front of the soil compactor in the direction of movement of the soil compactor, and a head-up display is provided disposed in at least one ground observation window, the head-up display is configured to display processing status information representing the processing status of the area of ​​the ground to be compacted located in front of the soil compactor in the direction of movement of the soil compactor.

[0006] Processing status information is, -A perspective projection of the movement of the soil compactor on the ground to be compacted, located in front of the soil compactor in the direction of movement of the soil compactor, and / or -A perspective projection of the area of ​​ground to be compacted, located in front of the soil compactor in the direction of the soil compactor's movement, which distinguishes and depicts areas with different ground conditions to be compacted. Includes.

[0007] In a soil compactor having the structure according to the present invention, processing status information is generated and supplied to the operator by a head-up display. When observing the area of ​​ground to be compacted located in front of the soil compactor in the direction of movement of the soil compactor, the operator perceives, based on perspective projection, the movement displayed on the head-up display as if it were taking place in the area of ​​ground to be compacted located in front of the soil compactor, which can be seen through the ground observation window. This enables the operator to precisely control the soil compactor and, therefore, accurately travel to or process areas that require further compaction or, in some cases, initial compaction according to the compaction plan, based on a virtually projected depiction of the area of ​​ground to be compacted located in front of the soil compactor.

[0008] The processing status information may further include ground information representing the condition of the ground to be compacted. This ground information may be displayed, for example, in the peripheral area of ​​a head-up display.

[0009] In order to distinguish between multiple runs that have already been performed, the descriptions of runs that have already been performed may be characterized in terms of their temporal order and / or the direction of movement of the soil compactor, and by the number of runs performed in each run or / or in the tracks representing each run.

[0010] When depicting areas with different ground conditions to be compacted, areas with different degrees of compaction and / or different ground temperatures can be distinguished and displayed, for example, using different colors.

[0011] Ground information displayed to the operator on the head-up display may include, for example, information regarding compaction degree and / or ground temperature. In this case, the compaction degree and / or ground temperature are associated with the area of ​​ground to be compacted that the soil compactor is currently moving over, respectively.

[0012] To enable a visual association between the perspective view on the head-up display and the ground to be compacted, the soil compactor can be equipped with a device that supplies positional information indicating the soil compactor's position on the ground to be compacted.

[0013] Furthermore, the soil compactor can be equipped with a device that supplies temperature information representing the temperature of the ground to be compacted. This allows the display of areas with different ground conditions based on location information and temperature information when depicting areas with different ground conditions to be compacted.

[0014] Furthermore, the soil compactor can be equipped with a device that supplies compaction status information representing the compaction state of the ground to be compacted. In this way, when depicting areas with different ground conditions to be compacted, it becomes possible to display areas with different conditions based on location information and compaction status information.

[0015] The head-up display may be configured to display environmental condition information representing the environmental conditions, thereby enabling the operator to take such environmental condition information into consideration when carrying out or continuing the compaction process.

[0016] For example, environmental condition information may include environmental temperature information, and / or atmospheric humidity information, and / or wind speed information, and / or precipitation information.

[0017] To enable the operator to receive the most comprehensive virtual projection possible of processing status information onto the area of ​​ground to be compacted located in front of the soil compactor, it is advantageous that the head-up display covers at least half, preferably at least 80%, of the ground observation window.

[0018] The present invention will be described in detail below with reference to the accompanying drawings. The drawings are as follows. [Brief explanation of the drawing]

[0019] [Figure 1]It is a side view of a soil compactor. [Figure 2] It is a view showing the operator's field of view in the line-of-sight direction II of FIG. 1 through the ground observation window from the operator's cab of the soil compactor of FIG. 1. [Figure 3] It is a view of the ground observation window corresponding to FIG. 2 with a display generated by a head-up display.

Embodiments for Carrying Out the Invention

[0020] In FIG. 1, a soil compactor 10 is shown in a side view. The soil compactor 10 includes a compaction structure generally represented by reference numeral 12, and comprises a vehicle rear portion 14 and a vehicle front portion 16 that is pivotally connected to the vehicle rear portion 14 for operating the soil compactor 10. The vehicle rear portion 14 is provided with drive wheels 18 driven by a drive device and an operator's cab 20. The vehicle front portion 16 is provided with a compaction roller 22 that is rotatable about a roller rotation axis orthogonal to the display surface of FIG. 1. The soil compactor 10 moves in the moving direction B on the ground 24 to be compacted, and as a result, the area 26 of the ground 24 to be compacted located in front of the soil compactor 10 in the moving direction B is compacted by the compaction roller 22. For example, the ground to be compacted may be composed of an asphalt material.

[0021] The operator's cab 20 is provided with an operating work area 28 for an operator 30. In the operator's cab 20, the operator 30 can sit on the seat 32 and operate the soil compactor 10 or control it during the implementation of the compaction process by operating various operating mechanisms 34.

[0022] On the driver's cab 20, a ground observation window 36, which is generally also called a front glass, is provided in front of the operation workplace 28 in the moving direction B. Through the ground observation window 36, there is a visual field 38 for the operator 30 to view the area 26 of the ground 24 to be compacted where the operator 30 is located in front of the soil compactor 10 in the moving direction B. It is emphasized that it is also possible to provide a window on the side or rear of the driver's cab 20 through which the operator can view the area of the ground 24 to be compacted located beside or behind the soil compactor 10.

[0023] Furthermore, the soil compactor 10 is provided with a device 40 that supplies position information representing the position of the soil compactor 10 on the ground 24 to be compacted, including, for example, a GPS system. Furthermore, the soil compactor 10 is provided with a device 42 that supplies temperature information representing the temperature of the ground 24 to be compacted. The device 42 includes, for example, one or more temperature sensors 44, 46, such as infrared sensors, on the rear part 14 and the front part 16 of the vehicle, whereby temperature information regarding the area of the ground to be compacted where the soil compactor 10 is currently traveling is supplied. Since the position information is also simultaneously supplied by the device 40, an association with the temperature information generated at that location can be supplied for each position of the soil compactor 10.

[0024] The soil compactor 10 includes a vibration excitation device 48 disposed on the compaction roller 22 and schematically shown. The vibration excitation device 48 can include, for example, one or more unbalanced masses configured to generate the vibration movement of the compaction roller 22 and driven to rotate around the roller rotation axis.

[0025] To supply vibration information representing the movement of the soil compactor 10 or compaction roller 22 during the vibration treatment process of the ground 24 to be compacted, acceleration sensors 50 and 52 can be installed on the compaction roller 22 and capable of detecting the acceleration of the compaction roller 22 in, for example, the horizontal and vertical directions. Considering the detected acceleration of the compaction roller 22 and the moving speed of the soil compactor 10 in the direction of movement B, which can be derived from, for example, position information, it is also possible to supply information regarding the compaction state of the ground to be compacted at the position where the soil compactor 10 or compaction roller 22 is currently passing, and to associate this information with the position information.

[0026] A head-up display 54 is provided in the ground observation window 36, and is specifically shown in Figure 3 using the generated image. The head-up display 54 can use a projector, for example, provided in the control console 55 of the driver's cab 20, to generate an image that allows the operator 30 to see the area 26 of the ground 24 to be compacted, located in front of the compactor 10 in the direction of movement B, onto a film-like coating of the ground observation window 36.

[0027] The head-up display 54 is configured to display processing status information, collectively represented by reference numeral 56, on the ground observation window 36. This processing status information includes various informational content in a perspective projection. This allows the operator 30 to get the impression that the processing status information displayed on the ground observation window 36 is actually projected onto the area 26 of the ground 24 to be compacted, located in front of the soil compactor 10. This projection may be realized, for example, by a central projection, where the spatial area where the operator 30's head would be located can be used as the center of the perspective projection. In this case, for example, to accommodate operators 30 of various body types, the position of the projection onto the ground observation window 36 and / or its size can be changed, for example, by an adjustment mechanism provided on the control console 55.

[0028] For example, the processing status information may include a perspective projection of runs 58 that have already been performed by the soil compactor 10 in the past. Since the position of the soil compactor 10 is always known during such runs, it is possible to record the trajectory of such runs 58 and display it in the ground observation window 36 as a perspective projection, i.e., a spatial projection. In this case, adjacent runs may be depicted in different colors, for example, so that the operator 30 can distinguish between them. In the central area, for example, runs 58' that are currently being performed or are to be performed can be displayed. It is also possible to display runs that have not yet been performed but have been determined based on the compaction plan, and distinguish them from runs that have already been performed, for example, by corresponding colors or other markings.

[0029] Assigned to various runs 58 depicted in perspective projection, the processing state information 56 can also display information that distinguishes the state of the ground to be compacted. Since such compaction state information can be supplied by a device 60 including acceleration sensors 50, 52 to provide compaction state information representing the compaction state of the ground 24 to be compacted for each area of ​​the ground 24 that the soil compactor 10 has already passed over, different runs may also include compaction state information representing the compaction state, for example by color or other coding. Here, for example, it is also possible to identify local areas 62, 62' that have a different compaction state from the surrounding area.

[0030] Distinguishing and describing the various states of the ground 24 to be compacted can be used, for example, to highlight areas with different temperatures. Here, for example, the temperature detected when passing through each area of ​​the ground 24 to be compacted can be used as the basis for displaying such processing state information.

[0031] The head-up display may also be configured to display ground information, such as the temperature or compaction status of the area of ​​the ground 24 where the vehicle is currently traveling, in addition to information including the perspective projection, within the peripheral area of ​​the head-up display 54 and outside the perspective projection. If, for example, information regarding the temperature of the area 26 of the ground 24 to be compacted located in front of the soil compactor 10 is displayed in the perspective view area, then numerical values ​​related to the temperature or compaction status may be displayed within the displayed travel 58.

[0032] The head-up display 54 may also be configured to display environmental condition information 64, 64', such as ambient temperature, atmospheric humidity, wind speed, or precipitation, in the peripheral area. This information also enables the operator 30 to perform the compaction process to be carried out in accordance with these environmental conditions, if necessary, and in a manner different from the compaction plan created taking other environmental conditions into consideration.

[0033] The operator 30 can perform the compaction process without having to observe a display located outside the field of view 38 and evaluate the displayed information, thanks to the perspective-based information virtually projected onto the area 26 of the ground 24 to be compacted located in front of the soil compactor 10, generated by the head-up display 54. This means that the operator 30 can always observe the area 26 of the ground 24 to be compacted located in front of the soil compactor, and at the same time always recognize information that characterizes and distinguishes the area 26 or its individual parts in relation to various parameters related to compaction.

[0034] Finally, it should be noted that such a soil compactor may be equipped with multiple ground observation windows and a head-up display installed in each of them. The operator's cab may have two operating workspaces, for example, assigned to opposite directions of movement of the soil compactor. For example, the seats in the operator's cab may be rotatable, so that the operator can use one of the two operating workspaces depending on the direction of movement of the soil compactor, and observe the ground to be compacted through the ground observation windows installed in each operating workspace, using the head-up displays installed in the ground observation windows. [Explanation of Symbols]

[0035] 10 Soil Compactor 12 Compaction structure 14 Rear of the vehicle 16 Front of the vehicle 18 drive wheels 20 Driver's cab 22 Compaction roller 24 Ground 26 areas 28 Operation workshop 30 Operator 32 seats 34 Operating mechanism 36 Ground observation window 38 Field of view 40 equipment 42 Equipment 44, 46 Temperature sensors 48. Vibration Excitation Device 50, 52 Accelerometer 54 Head-Up Display 55 Control Console 56 Processing Status Information 58, 58' running 60 equipment 62, 62' area 64, 64' Environmental Condition Information B Direction of movement

Claims

1. A soil compactor comprising a compaction structure (12) that is movable over ground (24) to be compacted, wherein the compaction structure (12) is provided with at least one compaction roller (22) that is rotatable around a roller rotation axis, and an operator's cab (20) for an operator (30) equipped with at least one operating workspace (28), the operator's cab (20) is provided with at least one ground observation window (36) disposed in at least one of the operating workspaces (28), and the movement of the soil compactor is observed through at least one of the ground observation windows (36). A field of view (38) is provided for observing the area (26) of the ground (24) to be compacted, located in front of the soil compactor (10) in the direction of movement (B), and a head-up display (54) is provided in at least one of the ground observation windows (36), and the head-up display (54) is configured to display processing status information representing the processing status of the area (26) of the ground (24) to be compacted, located in front of the soil compactor (10) in the direction of movement (B) of the soil compactor. The processing status information is, - In the direction of movement (B) of the soil compactor, in the region (26) of the ground (24) to be compacted located in front of the soil compactor (10), a perspective projection of the travel (58, 58') on the ground (24) to be compacted, which has already been and / or will be performed by the soil compactor (10), or / or - A perspective projection of the region (26) of the ground (24) to be compacted, located in front of the soil compactor (10) in the direction of movement (B), which distinguishes and depicts the regions (62, 62') of the ground (24) to be compacted that have different conditions, Soil compactor containing [this material].

2. The soil compactor according to claim 1, characterized in that the processing state information includes ground information representing the state of the ground (24) to be compacted.

3. The soil compactor according to claim 1 or 2, characterized in that, in the description of already performed runs (58), the runs are characterized in that each run (58) or / and the number of runs (58) performed in the tracks representing each run, with respect to their temporal order or / and the direction of movement of the soil compactor (10).

4. The soil compactor according to any one of claims 1 to 3, characterized in that, in depicting areas of the ground (24) to be compacted that have different conditions, areas with different degrees of compaction and / or different ground temperatures are displayed separately.

5. A soil compactor according to claim 2, or, by reference to claim 2, according to claim 3 or 4, characterized in that the ground information includes information regarding the degree of compaction and / or information regarding ground temperature.

6. The soil compactor (10) is provided with a device (40) that supplies positional information indicating the position of the soil compactor (10) on the ground (24) to be compacted, as described in any one of claims 1 to 5.

7. The soil compactor (10) is provided with a device (42) that supplies temperature information representing the temperature of the ground (24) to be compacted, as described in any one of claims 1 to 6.

8. The soil compactor according to claims 6 and 7, characterized in that, in depicting areas of the ground (24) to be compacted that have different conditions, areas of different conditions are displayed based on positional information and temperature information.

9. The soil compactor (10) is provided with a device (60) that supplies compaction state information representing the compaction state of the ground (24) to be compacted, as described in any one of claims 1 to 8.

10. The soil compactor according to claims 6 and 9, characterized in that, in depicting areas of the ground (24) to be compacted that have different conditions, areas of different conditions are displayed based on location information and compaction condition information.

11. The soil compactor according to any one of claims 1 to 10, characterized in that the head-up display (54) is configured to display environmental condition information (64, 64') representing the environmental condition.

12. The soil compactor according to claim 11, characterized in that the environmental condition information (64, 64') includes environmental temperature information, / and atmospheric humidity information, / and wind speed information, / and precipitation information.

13. The soil compactor according to any one of claims 1 to 12, characterized in that at least half, preferably at least 80%, of the ground observation window (36) is covered by the head-up display (54).

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