DE2039668A1 - Vehicle, in particular motor vehicle for agricultural use - Google Patents

Description

Vehicle, in particular motor vehicle for agricultural use

The invention relates to a vehicle, in particular an agricultural vehicle Usable motor vehicle for towing, pushing and / or carrying devices with two guided on a vehicle frame, designed as a portal axle and provided with an axle differential drive axles with equally sized drive wheels, their drive from a multi-cylinder internal combustion engine via a Torque converter takes place with a power split.

In agricultural engineering, there is a problem with a motor vehicle and large fields due to simultaneous rear and front lengths To manage the attachment or construction of equipment efficiently as well as transport and loading work economically with the same vehicle perform with the greatest possible comfort for the driver to be able to. To solve this problem, a motor vehicle of the aforementioned type has already become known (German patent specification 950 430), in which the internal combustion engine with its longitudinal center axis parallel and laterally offset to the vehicle longitudinal center axis and partly in the area of the vertical extent the front drive wheels is arranged. On the end of the internal combustion engine facing the rear drive axle is a A torque converter designed as a mechanical gearbox with a downstream transfer case as a power split flanged, the drive arches more on all sides

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PTO shafts of the vehicle takes place from the manual transmission. Due to this construction, there is an axle load distribution of about 2/3 for the steerable front axle and about 1/3 for the rear axle. Such a vehicle is, however, for the attachment of support wheel-free, which is aimed at with both a small and a large drive power of the vehicle Working equipment not suitable. This is due to the fact that with the unequal axle load, especially those with a large Lever arm from the front center of the driving axle attacking masses of a front-side working device, which has a relatively high position The overall center of gravity of the vehicle is fanned to pitching vibrations around an axis running transversely to the vehicle's longitudinal center axis is, whereby the steering stability and the transmission of the drive power to the drive wheels over an allowable amount be disturbed. This known vehicle also has the disadvantage that its driving stability on a slope as a result of the too high an overall center of gravity is not sufficient. In addition, the known motor vehicle is due to its to large suspension travel and the unequal axle loads are not suitable for the operation of heavy front and / or rear loaders. Finally, the anne vehicle has the disadvantage that not every work to be carried out with it has an optimal driving speed can be assigned.

Based on this known prior art, it is The object of the invention to provide a motor vehicle that was initially described in terms of »μδ-

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ORIGfNAL INSPECTED

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set type while avoiding the known vehicle To improve the disadvantages described so that with him in good visibility and optimal driving speed with the greatest possible steering and driving stability, as well as wheelless cultivation by means of the rear and / or the front attached implements as well as heavy transport and loading work can be carried out. "

This object is achieved according to the invention in that the "torque converter is designed as a continuously variable hydrostatic converter with a secondary part fixed to each drive axis and that the internal combustion engine is arranged with its longitudinal center axis running transversely to the direction of travel with the primary part of the torque converter with its overall center of gravity approximately centrally between the drive axes . with such a structure is achieved in particular that the driving wheels at λ large steering stability is possible when operating with stützradlosen tillage equipment even in low-load conditions an almost slip-free power transmission. in addition, the motor vehicle of the invention offers the advantageous possibility of heavy loading work with a front and / or rear loader to be able to carry out on larger slopes than before olumens and with regard to their visibility for a driver as well as front passenger, the driver's platform is optimally designed with or offline cabin parts on the vehicle with also optimal saddle-up

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to arrange space for devices to be saddled up.

In a further development of the invention it is provided that the vehicle frame is connected to the drive axles on both drive wheel sides via springs which are designed as rubber springs. This results in the advantage that, with a small spring deflection and high driving comfort, fast transport work can be carried out at an optimal driving speed. Moreover, such a h type of suspension allows stützradfreie tillage without failure of the kinematics and the completion of heavy loading.

A simple and thus cost-effective management of the drive axles can be achieved in that the rubber springs as Transverse guide members of the drive axles are used and these via central trailing arms with a spherical joint on the vehicle frame are led. Here, the secondary parts can advantageously de3 torque converter serve as trailing arm. As part of

^{w of} the invention there is also the possibility that the trailing arm. are designed as wishbones. The wishbones can be used to hold the secondary parts of the torque converter.

According to a further idea of the invention it is provided that the secondary parts of the hydrostatic torque converter the side of the drive axles facing the internal combustion engine

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are arranged. A significant simplification of the overall structure can also be achieved in that the internal combustion engine on both sides of the same below the vehicle frame arranged and is preferably elastically mounted with this cross members connected via rigid tension struts.

In this way, a double utilization of components can be achieved be that the cross members disnen as a holder for the spherical bearings of the trailing arm.

Provided that the vehicle according to the invention front and / or at the rear and / or on both sides of the vehicle frame, a power take-off shaft for driving devices is provided, according to the Invention of the drive of the power take-off shaft or the power take-off shafts from the end face facing away from the primary part of the torque converter of the internal combustion engine. ABtelle consists of this likewise the advantageous possibility that the drive of the power take-off shaft or the power take-off shafts via a device arranged between the internal combustion engine and the primary part of the torque converter Splitting gear takes place. -

To reduce the overall height of the center of gravity, which improves driving stability, especially on the slope, is favorably influenced, it is provided in a further embodiment of the invention that the Internal combustion engine and / or the primary part of the torque converter is or are arranged with their center of gravity below the vehicle frame »

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It is also important for attaching work equipment close to the center of gravity and for creating good light conditions on the drive wheels and Tools provided that the drive wheels at least one drive axle over the front or rear end edge of the vehicle frame protrude.

In a further lining of the invention it is provided that between the front edge of the vehicle frame and the

ψ engine, a driver's platform with steering handle, driver and front passenger seat as well as actuating devices for the vehicle drive and work equipment is arranged. To reduce the overall center of gravity of the vehicle, it is advantageous that the driver's platform protrudes between the longitudinal cheeks of the vehicle frame in the area of the vertical extent of the drive wheels. It is useful here that the driver's platform is designed as a tub. A double use of the driver's platform can be achieved in that the tub as the

~ Cross member connecting the longitudinal cheeks of the vehicle frame is.

It is useful for the construction of the vehicle according to the invention Furthermore, that ei he longitudinal cheeks of the vehicle frame in the area of the driver's platform above the vertical extension the front driving wheels and on theirs facing away from the driver's platform End in case of the vertical extension of the rear Drive wheels run. Here Θ3 is also from Voiteü. That the longitudinal cheeks de: vehicle frame in the area of internal combustion

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machine are angled vertically. In addition, as part of the Invention provided that the longitudinal cheeks of the vehicle frame in the area of the rear drive wheels and / or the area of the drive machine are angled horizontally.

For the protection of the driver and front passenger, provision is also made for an essentially U-shaped rollover protection bracket, which is rigidly connected to the longitudinal cheeks of the vehicle frame, to be arranged on the front of the vehicle frame in front of the steering handle and on the side facing away from the driver's seat in the area of the driver's platform . A vibration-free solution results from the fact that the rollover protection bars are connected to the vehicle frame via elastic intermediate links. In the context of the invention, the rollover protection bracket should also serve to hold the front and / or side windshields and be bridged by a preferably rigid roof part to form a driver's cab. For creating good visibility of attached devices and the driving wheels of the tractor, it is of advantage here that i the cab in the shape of a stepped pyramid is executed.

Further features, properties and advantages of the present invention can be found in the following description of the drawing, which represents several embodiments of the invention, can be removed. Show it:

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1 shows a motor vehicle according to the invention in side view, FIG. 2 shows a front view, and FIG

3 shows a plan view of the chassis and the drive scheme of the motor vehicle according to FIGS. 1 and 2,

4 is a side view of another embodiment of a motor vehicle according to the invention;

Fig. 5 that the chassis and the drive scheme of a further embodiment it.

The motor vehicle according to Figs. 1 to 3 has a front steerable Driving axle 1 with an axle differential 2 and a rear driving axle 3, designed as a rigid axle in the example, with a AchBdifferential 4. The two drive axles 1 and 3 are used to drive the front and rear drive wheels 5 and 6 and are used to Creation of a large ground clearance for the vehicle carried out in portal design. Furthermore, the driving axles 1 and 3 are over each two on both sides of the axle differentials 2 and 4 fixed to them connected block-like rubber springs 7 with a low suspension ™ path, which can be linear or preferably progressive, at one front and rear cross member 8 and 9, respectively, which are provided with lateral longitudinal cheeks 10 arranged parallel to one another form a vehicle frame 11. The longitudinal cheeks 10 can as can be seen in Fig. 3, with their in the area of the rear drive wheels 6 lying parallel rear part 12 with a smaller transverse distance than in its middle or front part 13 or 14 be arranged to each other, wherein the transition from the middle part to the rear part 12 by angled the longitudinal cheeks 10 in a

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horizontal plane is executed. The rear part 13 is used here as a receptacle for Aufsattelgeräte, not shown.

About midway between the two drive axles 1 and 3, a multi-cylinder internal combustion engine 15 is arranged between the two longitudinal cheeks 10 for driving the vehicle with its longitudinal center axis transverse to the vehicle longitudinal center axis. The internal combustion engine 15 overlaid on both sides thereof disposed below the vehicle frame 11 and to the longitudinal cheeks 10 connected via * rigid tie rods 16 traverse members 17. Preferably, 15 © lastische intermediate links 18 are connected between the transverse members 17 and the internal combustion engine. The arrangement of the crossbars 17 and the tension struts 16 is made according to the invention so that the lower edge of the internal combustion engine 15 and the lower edge of the axle differentials 2 and 4 are limited downwards by a common horizontal plane, so that the center of gravity of the internal combustion engine is roughly centered between the driving axles 1 and 3 is below the vehicle frame 11. How | 3, the internal combustion engine 15 is connected to two pump parts 19 and 20 of a continuously adjustable hydrostatic torque converter driven jointly by it, one of which is via pressure medium supply and return lines 21, 22 and 23, 24 the engine part 25 assigned to the front drive axle 1 or the engine part 26 assigned to the rear drive axle 3 is supplied or returned with hydraulic working fluid. As Sfckadärteile of the Drehoomtnten-

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Converter serving engine parts 25 and 26 are according to the invention firmly clamped to the axle differential 2 or 4 of the front drive axle 1 or rear drive axle 3 and drive them Depending on the pump and / or motor parts 19, 20 or 25, 26 selected transmission ratio. The two engine parts 25 and 26 are used by articulating their end flanges 27 and 28 respectively held by the cross members 17 spherical Bearing 29 as a central trailing arm for guiding the driving axles and 3 in the longitudinal direction of the vehicle. From the drive machine 15 takes place parallel to the drive of the drive wheels 5 and 6 via a Not shown branching gear 30 with clutches of the engine speed-dependent drive of a front PTO shaft 31 or a rear PTO shaft 32 for front or rear implements, not shown. The working devices are at the front or rear by means of one that can be seen in FIG. 1 Attachment device 33 can be articulated. The two implement attachment devices 33 consist of an upper link 34 old connected to the vehicle frame 11, and two lower ones with the drive axle 1 or 3 articulated links 35 and a quick-release frame 36. Both implement attachment devices 33 are by means of a Hydraulic power lift, not shown, or a corresponding lifting or pulling cylinder, which is operated by the Pump parts 19 and 20 of the hydrostatic torque converter or a special one driven by the internal combustion engine 15 Pump can be raised and lowered.

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Between the front end edge of the vehicle frame 11 and the internal combustion engine 15 an operator's platform 37 is disposed ^mi "t a trough-shaped part 38 which lies partially in the region of the vertical extension of the front drive wheels. 5 The operator platform 37 has a steering device 39" a driver's seat 40 and controls 41 for the drive of the vehicle and devices to be attached. In addition, the driver's platform 37 is provided next to the driver's seat 40 with a passenger seat 40a, which is preferably arranged next to it.

For accident protection against rollover of the vehicle this is on the front of the steering device 39 and on the the side facing away from the driver's seat 40, each with a flexurally rigid directly with the longitudinal cheeks 10 or via elastic intermediate links essentially U-shaped rollover protection bars connected to the longitudinal cheeks 42 and 43 respectively. The two rollover protection bars 42, 43 are surrounded by a longitudinally rigid roof part 44 bridged and provided with front, rear and side windshields 45, 46, 47, which together with the rollover protection bars 42, 43 and the roof part 44 form a driver's cab 48. The rollover protection bars 42, 43, the roof part 44 and the windshields 45 »46, 47 are intended to create the most favorable Visibility of attached implements and the drive wheels 5, 6 be designed so that the driver's cab 48 in the The shape of a stepped pyramid is executed. Furthermore should

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the side panes 47 as a sliding or hinged door for entry be formed in the driver's cab 48.

In the exemplary embodiment shown in FIG. 4, in a modification of the exemplary embodiment according to FIG Extension of the rear drive wheels 6 lie. Here, the gradation of the vehicle frame 49 is carried out by vertically bending the longitudinal cheeks 51 in the middle part 50. The construction shown in FIG. 4 has the advantage that implements or containers carried by the rear parts 53 of the longitudinal cheeks 51 are carried with a low overall center of gravity for the vehicle. Furthermore , according to FIG. 4, the front and rear drive axles 1 and 3 are guided in the longitudinal direction of the vehicle via triangular links 54 shown in detail in FIG. The wishbones 54 are preferably used to hold the engine parts 25 and 26 of the hydrostatic torque converter. Furthermore, in the exemplary embodiment according to FIG. 4, the two rollover protection bars 42, 43 are in a modification of the embodiment according to FI ^. 1 run slightly inclined to the front edge of the vehicle.

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In the exemplary embodiment shown in FIG. 5, the both drive axles 1 and 3 in the same way by means of wishbones 54 in the longitudinal direction of the vehicle on the vehicle frame out and also serve as a holder for the engine parts or 26 of the hydrostatic torque converter, which in deviation to the embodiment of FIG. 3 only one of the internal combustion engine 15 has driven pump part 55. It is on the end of the internal combustion engine facing away from the pump part 55 15 a branching device driven by this | drive 56 arranged, of which a cardan shaft 57 resp. a front power take-off shaft 31 and a rear power take-off shaft 32 can be driven, which are preferably arranged in the center of the vehicle. It is mentioned that the drive depends on the engine speed PTO shafts 31 and 32 in the same way by a two-port transmission flanged between the pump part 55 and the internal combustion engine 15 can be done. In the exemplary embodiment according to FIG. 4, a modification of the example according to FIG. 3 both driving axles 1 and 3 advantageously as steerable ^ Running axles.

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Claims (24)

5 Cologne 80, July 29, 1970: D 70/80 AP Yes / B patent claims 1. Vehicle, in particular motor vehicle for agricultural use For towing, pushing and / or carrying devices with two guided on a vehicle frame as a portal axis trained and provided with an axle differential drive axles with drive wheels of the same size, the drive of which is provided by a multi-cylinder internal combustion engine via a torque wall * ler takes place with a power split, characterized that the torque converter is assigned as a continuously variable hydrostatic converter with one of each drive axis (1 or 3) axially fixed secondary part (25 or 26) is executed, and that the internal combustion engine (15) with its longitudinal center axis transverse to Direction of travel running with the primary part (19, 20 or 55) of the torque converter with its overall center of gravity approximately in the middle are arranged between the drive axles (1, 3). 2. Vehicle according to claim 1, characterized in that ™ the vehicle frame (1i) or. 49) on both drive wheel sides Springs, which are designed as rubber springs (7), with the drive axles (1, 3) is connected. 3 · Vehicle according to claim 2, characterized in that the rubber springs (7) act as transverse guide members of the drive axles (1, 3) and these via central trailing arms (19, 20 or 54) old a spherical joint (29) on the vehicle frame (11 or 49) are performed. 2 0 9 B 0 8/0 8 7 2 - 15 - 29 July 70 4. Vehicle according to claim 3 »characterized in that the secondary parts (26, 25) of the torque converter as trailing arms to serve. 5. Vehicle according to claim 3 »characterized in that the trailing arms are designed as triangular links (54). 6. Vehicle according to claim 5, characterized in that * the wishbones (54) serve to hold the secondary parts (25 »26) of the torque converter. 7. Vehicle according to one of claims 1 to 6, characterized in that that the secondary parts (25, 26) of the hydrostatic torque converter facing the internal combustion engine (15) Side of the driving axles (1, 3) are arranged. 6. Vehicle according to one of claims 1 to 7 »characterized in that that the internal combustion engine (15) is arranged on both sides of the same underneath the vehicle frame (11 or 49), and is preferably elastically supported with this cross members (17) connected via rigid tension struts (16). 9 * Vehicle according to claim 8, characterized in that the Cross members (17) serve as a holder for the spherical joints (29) of the trailing arms (19 »20 or 54). 2 0 9808/0872 F 36Od - 16 - 30. 7. 70 10. Vehicle according to one of claims 1 to 9 »in the front and / or at the rear and / or on both sides of the vehicle frame a power take-off shaft is provided for driving implements, characterized in that the drive of the power take-off shaft (31 or 32) or the power take-off shafts (31 »32) from the end face of the internal combustion engine facing away from the primary part (19, 20) of the torque converter (15) take place. 11. Vehicle according to one of claims 1 to 9 »in the front and / or a power take-off shaft is provided at the rear and / or on both sides of the vehicle frame, characterized in that the drive of the power take-off shaft (31 or 32) or the power take-off shafts (31, 32) via an between the internal combustion engine and the primary part the torque converter arranged split gear takes place. 12. Vehicle according to one of claims 1 to 11, characterized in that that the internal combustion engine (15) and / or the primary part (19, 20 or 55) of the torque converter with its center of gravity is or are arranged below the vehicle frame (11 or 49). 13. Vehicle according to one of claims 1 to 12, characterized in that that the drive wheels (5, 6) have at least one drive axle (1, 3) over the front or rear end edge of the vehicle frame (11 or 49) protrude. 2U9ÜU8 / UÖ7 2 - 17 - 30. 7. 70 14. Vehicle according to one of claims 1 to 13, characterized in that between the front end edge of the vehicle frame (11 or 49) "and the internal combustion engine (15) a driver's platform (37) with steering handle (39) »Driver and passenger seats (40, 40a) and actuating devices (41) for the vehicle drive and work equipment is arranged. 15. Vehicle according to claim 14, characterized in that the driver's platform (37) between the longitudinal cheeks (10 or 51) ( of the vehicle frame (11 or 49) protrudes into the area of the vertical extent of the drive wheels (5). 16. Vehicle according to one of claims 14 to 15, characterized in that that the driver's platform (37) is designed as a tub (38). 17. Vehicle according to claim 15, characterized in that the tub (38) as the longitudinal cheeks (10 or 51) of the vehicle frame (11 or 49) connecting cross member is formed. , 18. Vehicle according to one of claims 1 to 17, characterized in that the longitudinal cheeks (51) of the vehicle frame (49) in the region of the driver's platform (37) above the vertical extent of the front drive wheels (5) and on their the Fah- ^; The end facing away from the platform (37) run in the region of the vertical extent of the rear drive wheels (6); ■ ' ^: '> ^! 20 Ü BOB / 0 0 7 2
ORIGINAL tNSPECTED F 380 d - 18 - 30. 7. 70 19. Vehicle according to one of claims 1 to 18, characterized in that that the longitudinal cheeks (51) of the vehicle frame (49) are angled vertically in the region of the internal combustion engine (15). 20. Vehicle according to one of claims 1 to 19, characterized in that that the longitudinal cheeks (10) of the vehicle frame (11) in the area of the rear drive wheels (6) and / or in the area of the Drive machines (15) are angled horizontally. 21. Vehicle according to one of claims 1 to 20, characterized in that that on the front side of the vehicle frame (11 or 49) upstream of the steering handle (39) and on that of the driver's seat (40) facing away from the side in the area of the driver's platform (37) each one rigid with the LMngswangen (10 and 51) of the Vehicle frame (11 or 49) connected, essentially U-shaped Rollover bracket (42, 43) is arranged. Fe 22. Vehicle according to nspruch 21, characterized in that the rollover protection bar (42, 43) via elastic intermediate links are connected to the vehicle frame (11 or 49). 23. Vehicle according to one of claims 22 to 23, characterized in that that the rollover protection bar (42, 43) of the holder of the front and / or side windshields (45, 46, 47) and are bridged by a preferably flat roof part (44) to form a driver's cab (48). 209808/0872 - 19 - 30. 7. 70 24. Vehicle according to claim 23, characterized in that the driver's cab (48) is in the form of a stepped pyramid is executed » 2Ü9808 / Ü872