Self-propelled soil compactor

Abstract

Cooling air flowing through the soil compactor reduces the load on the operator. [Solution] The soil compactor includes a front vehicle (14) and a rear vehicle (16) rotatably connected to the front vehicle for steering the soil compactor (10). The front vehicle is provided with a drive unit and a cooling system (24), which includes coolers (30, 32, 34) and a cooling air blower (60) through which a medium to be cooled and cooling air can flow. The coolers are located on the rear of the front vehicle facing the rear of the vehicle. Cooling air flowing through the coolers located on the rear of the front vehicle flows out from the coolers toward the rear of the vehicle. The front of the rear of the vehicle is provided with a cooling air intake (64) for taking in the cooling air flowing toward the rear of the vehicle. The rear of the vehicle is provided with a cooling air outlet (78) for discharging the cooling air taken in by the cooling air intake.

Description

Technical Field

[0001] The present invention relates to a self-propelled soil compactor.

Background Art

[0002] Self-propelled soil compactors sold as the HD+ series by Hamm GmbH are shown in FIGS. 1 and 2. This self-propelled soil compactor 10 configured as a so-called tandem roller has a machine frame 12 with two system areas arranged continuously in the longitudinal direction L of the soil compactor. These two system areas are referred to as the vehicle front part 14 and the vehicle rear part 16 for the purpose of the present invention. The vehicle front part 14 and the vehicle rear part 16 are connected to each other so as to be pivotable about a steering axis extending in the height direction H of the soil compactor. Therefore, the soil compactor 10 can be steered by pivoting the vehicle front part 14 and the vehicle rear part 16 relative to each other.

[0003] A driver's cab, generally designated by reference numeral 18, is arranged at the vehicle front part 14, and an operator who operates the soil compactor can be seated in the driver's cab. In the soil compactor 10 shown in FIG. 1, the driver's cab 18 is oriented such that when moving in the longitudinal direction L of the soil compactor, i.e., to the left in FIG. 1, in the forward direction, the operator looks in this direction. This is the moving direction of the soil compactor that it may have during, for example, transfer travel. In order to compact soil materials such as asphalt, the soil compactor 10 generally reciprocates in the longitudinal direction L of the soil compactor. Therefore, the moving direction to the right in FIG. 1 is generally referred to as reverse. Basically, the driver's cab 18 can also be arranged on the machine frame 12 or the vehicle front part 14 so as to rotate 180°. In that case, the moving direction of the soil compactor to the right in FIG. 1 will be represented as the forward direction.

[0004] From this perspective, it can be seen that the terms assigned to the system areas of the mechanical frame 12, referred to as the front of the vehicle 14 and the rear of the vehicle 16, are primarily used to conceptually distinguish them, and do not restrict the direction in which such a soil compactor 10 moves, for example, during transport.

[0005] The front section 14 of the vehicle is also provided with a drive system, which is not visible in Figure 1. This drive system generally includes a diesel internal combustion engine, and may also include one or more electric motors if the soil compactor 10 is configured as a hybrid machine. Such a drive system can drive at least one of the two compaction rollers 20, 22 to rotate. Other system areas, such as a vibration generating mechanism or a hydraulic oil circuit that transmits energy within the soil compactor 10, can also be operated by this drive system.

[0006] In particular, to dissipate the heat generated around the drive unit in the area of ​​the front part 14 of the vehicle, the soil compactor 10 includes a cooling system 24, partially shown in Figure 2. The cooling system 24 includes two cooler packages 26, 28 arranged lateral to the longitudinal direction L of the soil compactor, and thus continuously in the lateral direction Q of the soil compactor, each of which comprises at least one cooler 30, 32, 34 and an attached cooling air blower 36, 38. The cooler 30 of cooler package 26 may be, for example, a coolant cooler that cools a coolant (generally coolant water) circulating through a diesel internal combustion engine. The cooler 32 of cooler package 28 may be, for example, an intake air cooler, and the cooler 34 of cooler package 28 may be, for example, a hydraulic oil cooler that cools hydraulic oil circulating through a hydraulic oil circuit.

[0007] Cooling air K, initially drawn in at the side regions 40, 42 of the front of the vehicle 14 by cooling air blowers 36, 38 arranged in two cooler packages 26, 28, is drawn in through the respective coolers 30 or 32, 34, and then discharged from the front of the vehicle 14 in the longitudinal direction L of the soil compactor or outward in the lateral direction. To draw in cooling air K upstream of the cooler packages 26, 28, a cooling air inlet 46 may be formed, for example, in the area of ​​a step recess 44 that can be used by an operator to reach the driver's cab 18. To discharge cooling air K downstream of the cooler packages 26, 28, a slit-shaped cooling air outlet 48 is provided at the front of the vehicle 14. As shown in Figures 1 and 2, a portion of the cooling air K that is basically to be discharged from the cooling air outlet 48 towards the rear of the vehicle 16 changes direction at the rear of the vehicle 16 and then flows upward into the area of ​​the driver's cab 18. In particular, if the door or window of the driver's cab 18 is open, or if the driver's cab 18 is basically an open-type driver's cab, the relatively warm exhaust may place a significant burden on the operator. [Overview of the project] [Problems that the invention aims to solve]

[0008] The objective of this invention is to provide a self-propelled soil compactor that reduces the load on the operator due to the cooling air flowing through the soil compactor. [Means for solving the problem]

[0009] According to the present invention, the problem is solved by a self-propelled soil compactor, which includes a front section of a vehicle and a rear section of a vehicle that is rotatably connected to the front section of the vehicle for steering the soil compactor and continues to the front section of the vehicle in the longitudinal direction of the soil compactor, wherein the front section of the vehicle is provided with a drive unit and a cooling system, the cooling system includes at least one cooler and a cooling air blower through which a medium to be cooled and cooling air can pass, the at least one cooler is located on the rear of the front section of the vehicle facing the rear section of the vehicle, thereby Cooling air flows through at least one cooler located on the rear of the front of the vehicle facing the rear of the vehicle, and flows out from at least one cooler located on the rear of the front of the vehicle facing the rear of the vehicle toward the rear of the vehicle. At least one cooling air intake is provided on the front of the rear of the vehicle facing the front of the vehicle for taking in the cooling air flowing out toward the rear of the vehicle, and at least one cooling air outlet is provided on the rear of the rear of the vehicle facing generally backward from the front of the vehicle for discharging the cooling air taken in by at least one cooling air intake.

[0010] In the case of a self-propelled soil compactor having the structure according to the present invention, the heated cooling air discharged from the front of the vehicle is not forced to flow outwards through the rear of the vehicle, but is taken in by at least one cooling air intake formed at the rear of the vehicle, and is therefore guided away from the area of ​​the front of the vehicle. This avoids, as much as possible, excessive load on the operator due to the cooling air or exhaust flowing into the area of ​​the operator's cab provided in the soil compactor. In particular, the fact that the cooling air flows through the rear of the vehicle from front to back, that is, substantially in the longitudinal direction of the soil compactor, and therefore does not cause a large change of flow direction that would lead to increased flow resistance, such as when flowing through the rear of the vehicle, a portion of the cooling air flowing out from the front of the vehicle may already be flowing laterally before it enters at least one cooling air intake also contributes to avoiding excessive load as much as possible.

[0011] To assist in guiding the flow of cooling air discharged from the front of the vehicle toward the rear of the vehicle and through the rear of the vehicle as intended, it is proposed that at least one cooler, positioned on the rear of the front of the vehicle opposite the rear of the vehicle, be positioned approximately in the center of the front of the vehicle in the lateral direction of the soil compactor, which is substantially perpendicular to the longitudinal direction of the soil compactor. With such central positioning, noise generated by the cooling system or its multiple coolers is further attenuated by the system area located to its lateral side.

[0012] The intake of cooling air at the rear of the vehicle can be further assisted by cooling air flowing through at least one cooler located on the rear of the front of the vehicle opposite the rear of the vehicle, and flowing out toward the rear of the vehicle from at least one cooler located on the rear of the front of the vehicle opposite the rear of the vehicle, essentially in the longitudinal direction of the soil compactor.

[0013] In the case of a compact structure that supports the centralized supply of cooling air to at least one cooling air intake at the rear of the vehicle, the cooling system includes a plurality of coolers through which cooling air can pass, and at least two of the coolers of the cooling system, provided for cooling different media, are arranged in a continuous manner along the longitudinal direction of the soil compactor on the rear of the front of the vehicle opposite the rear of the vehicle, thereby enabling the cooling air to pass through these coolers in a continuous manner, essentially along the longitudinal axis of the soil compactor.

[0014] In this case, for example, in order to efficiently cool different media to be cooled, at least two coolers provided for cooling different media are, - Coolant cooler for cooling the coolant of the drive unit, or / and, - Oil cooler for cooling the oil in the drive system, or / and - Air cooler for cooling the air supply to the drive unit, or / and - A hydraulic oil cooler for cooling hydraulic oil, or / and - Fuel cooler for cooling the fuel in the drive system, It may include.

[0015] To generate a flow of cooling air, the cooling system may include, in the longitudinal direction of the soil compactor, at least one cooler located on the rear of the front of the vehicle facing the rear of the vehicle, followed by a cooling air blower located upstream of the at least one cooler located on the rear of the front of the vehicle facing the rear of the vehicle.

[0016] If cooling air blowers are provided to cool different media and are located upstream of at least two coolers arranged in a continuous manner along the longitudinal direction of the soil compactor at the rear of the front of the vehicle opposite the rear of the vehicle, the flow of cooling air passing through these multiple coolers can be generated by a single cooling air blower. This results in a low-cost and compact structure, and reduces the acoustic load because fewer blowers are used.

[0017] A liquid tank, such as a water tank, may be provided at the rear of the vehicle. In this case, preferably, - The liquid tank shall at least partially restrict at least one cooling air intake in the height direction of the soil compactor, and / or the lateral direction of the soil compactor, which is substantially perpendicular to the longitudinal direction of the soil compactor, preferably in both directions, or / or - The liquid tank shall have at least one cooling air outlet that is at least partially limited in at least one direction, preferably both directions, in the height direction of the soil compactor and / or in the lateral direction of the soil compactor. This is stipulated.

[0018] Therefore, the liquid tank also forms a component that assists in the predetermined guidance of cooling airflow toward or through the rear of the vehicle. Consequently, no additional housing member is required.

[0019] For a predetermined guidance of the flow through the rear part of the vehicle, a cooling air flow path may be provided at the rear part of the vehicle from at least one cooling air intake to at least one cooling air outlet, and the liquid tank may at least partially limit the cooling air flow path in at least one direction, preferably both directions, in the height direction of the soil compactor or / and in the lateral direction of the soil compactor.

[0020] Furthermore, at the rear part of the vehicle, a tamping roller may be rotatably arranged around a roller rotation axis that is substantially orthogonal to the longitudinal direction of the soil compactor, and at the rear part of the vehicle, a roller cover is provided that extends in the direction of the roller rotation axis along a part of the outer circumference of the tamping roller around the roller rotation axis in the circumferential direction and surrounds a roller receiving space, and the roller cover limits the cooling air flow path in the direction of the tamping roller.

[0021] In this context, it is pointed out that such a tamping roller may also be configured as a roller that is continuous in the direction of the roller rotation axis, a split roller, or a plurality of rubber wheels arranged continuously in the direction of the roller rotation axis.

[0022] In order to take in cooling air at the front part of the vehicle, a cooling air inlet may be provided in a side edge region that is basically directed laterally with respect to the longitudinal direction of the soil compactor at the front part of the vehicle.

[0023] Furthermore, a driver's cab where an operator can control or operate the soil compactor may be provided at the front part of the vehicle.

[0024] For a compact structure, it may be defined that the driver's cab at least partially covers at least one cooler arranged on the rear surface of the front part of the vehicle facing the rear part of the vehicle in the longitudinal direction of the soil compactor.

[0025] At least a part of the cooling air inlet may be provided in the region of a step recess leading to the driver's cab.

Brief Description of the Drawings

[0026] [Figure 1] It is a side view showing a self-propelled soil compactor known from the prior art. [Figure 2] It is a top view showing the area of the front part of the vehicle of the soil compactor, which is located under the operator's cab of the soil compactor of FIG. 1. [Figure 3] It is a perspective view showing a part of the assembly of the front part and the rear part of the vehicle of the soil compactor having the structure according to the present invention. [Figure 4] It is a side view showing a partial cross-section of the assembly of the front part and the rear part of the vehicle of FIG. 3.

Embodiments for Carrying out the Invention

[0027] Hereinafter, before describing the structure of the soil compactor 10 according to the present invention in detail with reference to FIGS. 3 and 4, it is pointed out that the soil compactor 10 may be configured as recognizable in FIG. 1 with respect to its basic structure. That is, the soil compactor 10 having the structure according to the present invention may similarly include a machine frame 12 having a front part 14 and a rear part 16 of the vehicle. The front part 14 of the vehicle may be provided with a drive device, an operator's cab 18, and, for example, a compacting roller 20 that can be driven to rotate. A further compacting roller 22 may be provided in the rear part 16 of the vehicle that can pivot with respect to the front part 14 of the vehicle for the operation of the soil compactor 10.

[0028] Regarding the soil compactor 10 having the structure according to the present invention as well, the terms "front part of the vehicle" and "rear part of the vehicle" or "front" and "rear" are only used to distinguish various system areas and various directions or orientations of the soil compactor 10, and it is emphasized that such a soil compactor 10 is not limited as to in which direction it should be moved, particularly for carrying out the compaction process.

[0029] Figure 3 shows the area of ​​the front of the vehicle 14, which is generally covered by the driver's cab 18 in its left-hand region. Step recesses 44 are visible and may be provided on both sides 40, 42 of the soil compactor to allow an operator to reach the driver's cab 18 located above that area of ​​the front of the vehicle 14. The slewing mechanism 50 schematically shown in Figure 4 and the piston / cylinder unit 52 visible in Figure 3 allow the front of the vehicle 14 and the rear of the vehicle 16 to slewing relative to each other, basically around a slewing axis extending in the height direction H of the soil compactor, in order to operate the soil compactor 10.

[0030] An important system area of ​​the cooling system 24 of the soil compactor 10 is located in the end region 54 of the front part 14 of the vehicle, which is located near the rear part 16 of the vehicle. In particular, the cooling system 24 includes a cooler package 58 that is arranged continuously in the longitudinal direction L of the soil compactor on the rear surface 56 of the front part 14 of the vehicle facing the rear part 16, and through which cooling air K can flow sequentially. Within the cooler package 58, a cooler 32 configured as an intake air cooler and a cooler 34 configured as a hydraulic oil cooler are arranged side by side on the upstream side in the direction of cooling air flow, and a cooler 30 configured as a coolant cooler may be arranged downstream thereof. Between these coolers 30, 32, and 34, which are located continuously in the longitudinal direction L of the soil compactor and approximately in the center of the front part 14 of the vehicle in the lateral direction Q of the soil compactor, or upstream or downstream thereof, there may be at least one additional cooler that can, if necessary, supply a fuel cooler for cooling diesel fuel. Also, an oil cooler for cooling the drive oil of the diesel internal combustion engine of the drive system may be located continuously in the longitudinal direction L of the soil compactor and therefore within a cooler package 58 of coolers through which cooling air K can flow in series. Importantly, the coolers used to cool thermally more important media are located upstream of the coolers that are to cool thermally less important media in the flow of cooling air.

[0031] Upstream of the cooler package 58, a single cooling air blower 60 is provided, which draws in cooling air K, particularly through a cooling air inlet 46 formed in the area of ​​the step recess 44, and transports it in the form of compressed air through the continuously arranged coolers 32, 34, and 30. Since only a single cooling air blower 60 is used, not only is installation space and cost reduced, but the acoustic load caused by the transport of cooling air K during the operation of the soil compactor 10 can also be reduced.

[0032] As indicated by the flow arrows in Figures 3 and 4, the cooling air K discharged from the rear surface 56 of the front of the vehicle 14, mainly in the longitudinal direction L of the soil compactor, flows toward the cooling air intake 64 formed in the rear of the vehicle 16. The cooling air intake 64 is dimensionally designed and positioned to take in roughly the entire flow of cooling air flowing out from the front of the vehicle 14 or the cooler package 58, so that the heated cooling air K discharged from the front of the vehicle 14 hardly flows to the side of the rear of the vehicle 16.

[0033] At the rear of the vehicle 16, there is a liquid tank 62 that is generally U-shaped when viewed in the longitudinal direction L of the soil compactor. This liquid tank 62 can receive, for example, water containing additives, and this water is sprayed onto the compaction roller 20 provided at the rear of the vehicle 16 during compaction work, preventing the material to be compacted, especially asphalt material, from adhering to it. Therefore, the liquid tank 62 restricts the cooling air intake 64 of the rear of the vehicle 16 upward in the height direction H of the soil compactor, and in both directions, i.e., to the right and to the left in the lateral direction Q of the soil compactor. In the height direction H of the soil compactor, the cooling air inlet 64 may be restricted downward by the frame 66 of the rear of the vehicle 16.

[0034] The rear of the vehicle 16 is further provided with a roller cover 70 that partially surrounds the outer circumferential region of the compaction roller 22 and thus surrounds the roller receiving space 68 of the compaction roller 22. The roller cover 70 extends almost the entire length of the compaction roller 22 in the direction of the roller rotation axis D of the compaction roller 22, which is perpendicular to the projection plane of Figure 4, and together with the U-shaped liquid tank 62, it defines the cooling air passage 72, which extends from the front surface 74 of the rear of the vehicle 16 facing the front of the vehicle 14 and a cooling air intake port 64 located in that region, to a cooling air outlet 78 located on the rear surface 76 of the rear of the vehicle 16 facing away from the front of the vehicle 14.

[0035] Cooling air K flowing from the rear 56 of the front 14 of the vehicle toward the front 74 of the rear 16 of the vehicle flows into the cooling air passage 72 in the area of ​​the cooling air intake 64, and flows mainly between the liquid tank 62 and the roller cover 70 toward the cooling air outlet 78 located on the rear 76 of the rear 16 of the vehicle, where it separates the rear 16 of the vehicle or the soil compactor 10 in the area above the compaction roller 22, basically in the longitudinal direction L of the soil compactor or in the flow direction diagonally upward.

[0036] This flow induction causes almost all of the cooling air K flowing through the front of the vehicle 14 to also flow through the rear of the vehicle 16, and therefore flows out of the soil compactor 10 with a gap between it and the cab 18, which can almost completely cover the cooler package 58 in the longitudinal direction L of the soil compactor. As a result, even when the soil compactor 10 moves such that the rear of the vehicle 16 is the leading system area in the direction of movement at that time and the front of the vehicle 14 is the following system area, it is possible to avoid the relatively warm cooling air K reaching the area of ​​the cab 18. [Explanation of Symbols]

[0037] 10 Soil Compactor 12 Machine frame 14 Front of the vehicle 16 Rear of the vehicle 18 Driver's cab 20, 22 Compaction rollers 24 Cooling system 26, 28 Cooler Package 30, 32, 34 cooler 36, 38 Cooling air blower 40, 42 Lateral area 44 recesses for steps 46 Cooling air inlet 48 Cooling air exhaust port 50 Swivel mechanism 52 Piston / Cylinder Unit 54 Front end area of ​​the vehicle 56 Rear of the front of the vehicle 58 Cooler Package 60 Cooling air blower 62 liquid tanks 64 Cooling air intake 66 frames 68 Laura Receptive Space 70 Roller Cover 72 Cooling air passage 74 Front of the rear of the vehicle 76 Rear of the vehicle 78 Cooling air outlet D Roller rotation axis H Soil Compactor Height Direction K Cooling air L Longitudinal direction of the soil compactor Q: Lateral direction of soil compactor

Claims

1. A self-propelled soil compactor comprising a front section (14) and a rear section (16) that is rotatably connected to the front section (14) for operating the soil compactor (10) and continues to the front section (14) in the longitudinal direction (L) of the soil compactor, The front part of the vehicle (14) is provided with a drive unit and a cooling system (24). The cooling system (24) includes at least one cooler (30, 32, 34) through which the medium to be cooled and cooling air (K) can pass, and a cooling air blower (60). At least one of the coolers (30, 32, 34) is positioned on the rear (56) of the front part (14) of the vehicle facing the rear part (16), and so the cooling air (K) flowing through the at least one cooler (30, 32, 34) positioned on the rear (56) of the front part (14) of the vehicle facing the rear part (16) flows out from the at least one cooler (30, 32, 34) positioned on the rear (56) of the front part (14) of the vehicle facing the rear part (16) toward the rear part (16). The front surface (74) of the rear section (16) of the vehicle, which is opposite the front section (14) of the vehicle, is provided with at least one cooling air intake port (64) for taking in the cooling air (K) flowing out in the direction of the rear section (16) of the vehicle. A soil compactor, wherein the rear (76) of the rear (16) of the vehicle, which is basically facing backward to the front (14) of the vehicle, is provided with at least one cooling air outlet (78) for discharging the cooling air (K) taken in by at least one cooling air intake (64).

2. The soil compactor according to claim 1, characterized in that at least one of the coolers (30, 32, 34) positioned on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16) of the vehicle is positioned approximately in the center of the front part (14) of the soil compactor in the lateral direction (Q) of the soil compactor which is substantially perpendicular to the longitudinal direction (L) of the soil compactor.

3. The soil compactor according to claim 1 or 2, characterized in that the cooling air (K) flowing through at least one of the coolers (30, 32, 34) located on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16) of the soil compactor basically flows out in the longitudinal direction (L) of the soil compactor from at least one of the coolers (30, 32, 34) located on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16) of the soil compactor toward the rear part (16).

4. The soil compactor according to any one of claims 1 to 3, characterized in that the cooling system (24) includes a plurality of coolers (30, 32, 34) through which the cooling air (K) can flow, and at least two of the coolers (30, 32, 34) of the cooling system (24), which are provided for cooling different media, are arranged continuously in the longitudinal direction (L) of the soil compactor on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16) of the vehicle, thereby allowing the cooling air (K) to flow continuously through the coolers (30, 32, 34) basically in the direction of the longitudinal axis (L) of the soil compactor.

5. At least two of the coolers (30, 32, 34) provided for cooling different media, - Coolant cooler for cooling the coolant of the drive unit, or / and, - Oil cooler for cooling the oil in the drive system, or / and, - Air cooler for cooling the air supply to the drive unit, or / and - A hydraulic oil cooler for cooling hydraulic oil, or / or, - Fuel cooler for cooling the fuel in the drive system, A soil compactor according to claim 4, characterized by including the following:

6. The soil compactor according to any one of claims 1 to 5, characterized in that the cooling system (24) includes, in the longitudinal direction (L) of the soil compactor, at least one cooler (30, 32, 34) located on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16), followed by a cooling air blower (60) located upstream of the at least one cooler (30, 32, 34) located on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16).

7. The soil compactor according to claim 6, in reference to claim 4, characterized in that the cooling air blower (60) is provided for cooling different media and is located upstream of at least two of the coolers (30, 32, 34) which are arranged continuously in the longitudinal direction (L) of the soil compactor on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16) of the vehicle.

8. A liquid tank (62) is provided at the rear of the vehicle (16), and - The liquid tank (62) restricts at least one of the cooling air intake ports (64) at least partially in at least one direction, preferably both directions, of the height direction (H) of the soil compactor substantially perpendicular to the longitudinal direction (L) of the soil compactor, and / or the lateral direction (Q) of the soil compactor, or / or - The liquid tank (62) restricts at least one of the cooling air outlets (78) at least partially in at least one direction, preferably both directions, of the height direction (H) of the soil compactor and / or the lateral direction (Q) of the soil compactor. A soil compactor according to any one of claims 1 to 7, characterized by the above.

9. The rear of the vehicle (16) is provided with a cooling air passage (72) extending from at least one cooling air intake (64) to at least one cooling air outlet (78), and, The liquid tank (62) restricts the cooling air passage (72) at least partially in at least one direction, preferably both directions, of the height direction (H) of the soil compactor and / or the lateral direction (Q) of the soil compactor. A soil compactor according to any one of claims 1 to 8, characterized by the above.

10. The rear of the vehicle (16) is provided with a compaction roller (22) rotatably arranged around a roller rotation axis (D) that is substantially perpendicular to the longitudinal direction (L) of the soil compactor, and the rear of the vehicle (16) is provided with a roller cover (70) that extends in the direction of the roller rotation axis (D) and surrounds a roller receiving space (68) along a part of the outer circumference of the compaction roller (22) in the circumferential direction, and The soil compactor according to claim 9, characterized in that the roller cover (70) restricts the cooling air passage (72) to the direction of the compaction roller (22).

11. The soil compactor according to any one of claims 1 to 10, characterized in that the front part (14) of the vehicle is provided with a cooling air inlet (46) in a side edge region (40, 42) which is basically oriented laterally with respect to the longitudinal direction (L) of the soil compactor.

12. The soil compactor according to claim 11, characterized in that a driver's cab (18) is provided at the front of the vehicle (14).

13. The soil compactor according to claim 12, characterized in that the driver's cab (18) at least partially covers in the longitudinal direction (L) of the soil compactor at least one of the coolers (30, 32, 34) located on the rear surface (56) of the front part (14) of the vehicle facing the rear part (16) of the vehicle.

14. The soil compactor according to claim 11 or 12, as referenced to claim 11, characterized in that at least a portion of the cooling air inlet (46) is provided in the area of ​​the step recess (44) leading to the driver's cab (18).

Images