WO2011087404A1 - Véhicule poids lourd - Google Patents

Véhicule poids lourd Download PDF

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Publication number
WO2011087404A1
WO2011087404A1 PCT/SE2010/000007 SE2010000007W WO2011087404A1 WO 2011087404 A1 WO2011087404 A1 WO 2011087404A1 SE 2010000007 W SE2010000007 W SE 2010000007W WO 2011087404 A1 WO2011087404 A1 WO 2011087404A1
Authority
WO
WIPO (PCT)
Prior art keywords
axle
vehicle
propeller shaft
hole
powertrain
Prior art date
Application number
PCT/SE2010/000007
Other languages
English (en)
Inventor
Andreas Lundmark
Original Assignee
Volvo Lastvagnar Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Lastvagnar Ab filed Critical Volvo Lastvagnar Ab
Priority to PCT/SE2010/000007 priority Critical patent/WO2011087404A1/fr
Publication of WO2011087404A1 publication Critical patent/WO2011087404A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B60K17/24—Arrangements of mountings for shafting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/36—Arrangement or mounting of transmissions in vehicles for driving tandem wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses

Definitions

  • the present invention relates to a heavy vehicle comprising a powertrain for propelling the vehicle.
  • the invention will below be described for a heavy vehicle in the form of a cargo-transporting road vehicle in the form of a truck. This should however only be regarded as one possible application and the invention may further be applied in a people- transporting vehicle, such as a bus, an agricultural machine or a work machine for transporting cargo, material, earth etc.
  • the invention is especially directed to a heavy vehicle with dual front axles and especially to a truck with dual front axles.
  • a heavy vehicle with dual front axles In many countries/regions, there are set limitations in maximum pressure on a front axle, which leads to a trend towards using dual front axles for applications where the truck will carry heavy loads. Further, in applications where the ground conditions are poor, such as in slippery conditions, at least one of the front axles must be a drive axle.
  • a truck with dual front axles results in high mobility off-road, especially adapted for applications in construction sites.
  • a first front axle (the foremost axle) constitutes a ⁇ -drive ⁇ axle and the second front axle is a drive axle.
  • the truck comprises at least one further drive axle arranged rear of the second axle.
  • the powertrain comprises a power source, which is arranged in a front part of the truck, a transfer gear box, which is arranged rear of the second axle and arranged to distribute power from the power source forwards to the second axle and rearwards to the further, rear drive axles via propeller shafts.
  • An object of the invention is to achieve a heavy vehicle (especially a truck) with dual front axles, which improves steering and simultaneously creates conditions for a combination of sufficient ground clearance and sufficient space for deflection of the vehicle's suspension system.
  • the vehicle comprises a first axle, which constitutes a drive axle and is arranged foremost in the vehicle, and a second axle, which is a non-drive axle, that the powertrain comprises a first propeller shaft which is configured to transmit power from a position rear of the second axle and forwards past the second axle for driving the first axle and that the first .propeller shaft extends through a hole in the second axle.
  • the solution is space-efficient in that the first propeller shaft is directed through the second axle in contrast to arranging the first propeller shaft above the second axle (which would result in limited suspension travel) or arranging the first propeller shaft below the second axle (which would result in limited ground clearance) .
  • the second axle comprises a bearing arranged in said hole and that the first propeller shaft is arranged in said bearing.
  • the bearing is adapted to support the first propeller shaft during rotation, which implies a controlled operation .
  • the through hole in the second axle for the first propeller shaft is arranged in the vicinity of a portion configured for connecting the second axle to a suspension member.
  • Said suspension member may be formed by a spring, such as a leaf spring, attached to the vehicle's frame.
  • the through hole in the second axle forms a weakness and this position of the through hole is preferred due to the fact that it is a less strained part of the second axle compared to a position closer to the nearest wheel. Further, a more central space between the vehicle's frame's side members would interfere with the position of the gearbox and/or other propeller shafts.
  • the through hole for the first propeller shaft is arranged at least partly at an interior side of said portion configured for connecting the second axle to the suspension member. This is a particularly advantageous position with regard to the other components competing of the available space.
  • At least a portion of the second axle, which comprises the through hole is formed by a one-piece unit.
  • a continuous piece creates conditions for an . easy production and sufficient rigidness for withstanding the loads during operation.
  • said at least one portion of the second axle is formed by a forging.
  • FIG 1 is a schematic side view of a truck with dual front axles according to an embodiment of the invention
  • FIG 2 shows a perspective front view of the truck in figure 1
  • FIG 3 shows a side view of the vehicle in figure 1 at.
  • FIG 4 shows a view from above of the vehicle in figure 1 at the position of the dual front axles
  • FIG 5 shows a perspective view of the second front axle in figure 1
  • FIG 6 shows a bearing arrangement in the second front axle for accommodating a propeller shaft in figure 1.
  • Figure 1 shows a schematic side view of . a heavy duty vehicle in the form of a truck 1 with dual front axles 2,3 according to an embodiment of the invention.
  • the truck 1 is of a type with a load carrying unit (not shown) directly attached to the frame of the tractive unit.
  • the load carrying unit may be rigidly attached to the frame, a so-called fixed cargo platform or tippable relative to the frame, a so-called tippable platform.
  • the truck 1 comprises a first axle 2, which constitutes a drive axle and is arranged foremost in the vehicle, and a second axle 3, which is a non-drive axle. All terms used in the description with regard to positions, such as “foremost”, “forwards", “rear”, “interior” etc, relates to the relative position in the truck.
  • the truck 1 comprises a powertrain 4 for propelling the vehicle.
  • the powertrain 4 comprises a power source 5 in the form of an internal combustion engine (preferably a diesel engine) , which is arranged in a front part 6 of the vehicle 1 and which is adapted to transmit power to the first axle 2. Further, the powertrain 4 comprises a gearbox 7 operationally connected to an output shaft of the engine 5.
  • the powertrain 4 comprises a first propeller shaft 8 which is configured to transmit power from a position 9 rear of the second axle 3 and forwards past the second axle 3 for driving the first axle 2.
  • the vehicle 1 further comprises at least one further drive axle 10,11 arranged rear of the second axle 3.
  • the powertrain 4 comprises a second propeller shaft 12, which is arranged to transmit power to said at least one further rear drive axle 10,11 in a direction rearwards from said position 9 rear of the second axle.
  • the powertrain 4 ' comprises a device 13 for distributing power to the first propeller shaft 8 and to the second propeller shaft 12 and the power distributing device 13 (or transfer gearbox) is arranged in said position 9 rear of the second axle.
  • the powertrain 4 comprises a further propeller shaft 14 operationally connected between the gearbox 7 and the transfer gearbox 13.
  • the powertrain 4 comprises a further propeller shaft 15 operationally connected between the transfer gearbox 13 and said first propeller shaft 8.
  • the powertrain 4 comprises a further propeller shaft 16 operationally connected between said first propeller shaft 8 and the first axle 2.
  • the first propeller shaft S is connected to the adjacent propeller shafts 15,16 via universal joints.
  • the engine 5 is arranged to power the first axle 2 via said first powertrain transmission shaft 8.
  • Each of the propeller shafts 8,14,12,15,16 extends in a- substantially longitudinal direction of the vehicle.
  • the truck comprises a forward control cab 17.
  • the entire cab can be tilted forwards to provide access to the engine 5 for . service and maintenance.
  • the truck 1 comprises a frame 18, which comprises two longitudinal side members 19,20 (see figure 2.) at a distance, from, each other in a transverse direction of the vehicle.
  • Each side member 19,20 has a U-shaped profile and the profiles are directed so that the U's are open towards each other.
  • the side members 19,20 are united by a plurality of cross members, 21. The side and cross members are joined together by bolt or rivet fastenings.
  • the side members 19,20 are provided with a hole configuration for attaching different components to the frame.
  • Figure 3 shows a side view of the vehicle 1 in figure 1 at the position of the dual front axles 2,3.
  • the vehicle comprises a suspension member 22 in the form of a spring, which is rigidly attached to said first side member 19.
  • the spring constitutes a leaf spring. More specifically, the suspension member 22 is elongated and extends substantially in parallel with the side member 19.
  • the suspension member 22 is rigidly attached to the side member via brackets or other intermediate means at two positions at a distance from each other in the longitudinal direction of the first side member 19.
  • the second axle 3 is rigidly attached to said first side member 22 at a position between the attachment points. Thus,, the second axle 3 is supported by the suspension member 22.
  • the suspension arrangement is mirrored at the other side member 20.
  • Figure 3 further shows a first ground clearance A for the transfer gear box 13 and a second ground clearance B for the second axle 3. Further, figure 3 shows a suspension travel C.
  • FIG. 3 shows part of a steering system 23 .
  • Both the first and second- axles 2,3 are steering axles.
  • the steering system 23 comprises a first steering link 24 for steering the first axle 2 and a second steering link 25 for steering the second axle 3.
  • Figure 4 shows a view from above of the dual front axles 2,3 corresponding to figure 3.
  • FIG. 5 shows a perspective view of the second axle 3 in figure 1.
  • the second axle 3 comprises at its respective ends 25,26 a bushing 27,28 constituting a bearing for a kingpin for supporting a wheel spindle.
  • the second axle 3 comprises a through hole 29 for accommodating the first propeller shaft 8.
  • a bearing 30 is arranged in said hole 29 and the first propeller shaft 8 is arranged in said bearing 30.
  • the through hole 29 in the second axle 3 for the first propeller shaft 8 is arranged in the vicinity of a portion 31 configured for connecting the second axle 3 to the suspension member 22.
  • the through hole 29 for the first propeller shaft 8 is arranged at least partly at an interior side of said portion 31 configured for connecting the second axle 3 to the suspension member 22. More specifically, the through hole 29 is positioned below the contact surface configured for contacting the suspension member 22.
  • a central section of the second axle 3 is defined by an upper surface 32 and a lower surface 33, which are substantially parallel to each other.
  • the central section comprises said portion 31 configured for connecting the second axle 3 to the suspension member 22.
  • the through hole 29 is positioned between the planes defined by said parallel surfaces 32,33.
  • At least a portion of the second axle 3, which comprises the through hole 29 is formed by a one-piece unit.
  • Preferably substantially the entire second axle 3 is formed by a one-piece unit.
  • Said at least one portion of the second axle 3 is formed by a forging.
  • the second axle is a one-piece forged unit.
  • said at least one portion of the second axle 3 is formed by a castings.
  • Figure 6 shows a cross section of the bearing arrangement 30 in the second front axle 3 in figure 5.
  • Figure 4 shows that the second axle 3 is arranged so that the hole 29 is positioned in the vicinity of the first side member 19 in a view from above. More specifically, the through hole 29 for the first propeller shaft 8 is arranged at least partly at an interior side of the first side member 19 in the view from above .
  • the invention is not limited to the type of truck shown in figure 1.
  • the invention may for example be applied in a semi-trailer tractor, wherein a semi-trailer is adapted to be connected to the semi-tractor via a so-called fifth wheel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention porte sur un véhicule poids lourd (1), lequel véhicule comprend un groupe motopropulseur (4) pour propulser le véhicule. Le véhicule (1) comprend un premier essieu (2) qui constitue un essieu moteur et est disposé tout à l'avant dans le véhicule, et un second essieu (3) qui est un essieu non moteur. Le groupe motopropulseur (4) comprend un premier arbre de transmission (8) qui est configuré pour transmettre la puissance à partir d'un point (13) situé en arrière du second essieu et vers l'avant au-delà du second essieu (3) pour entraîner le premier essieu (2), le premier arbre de transmission (8) s'étendant à travers un trou du second essieu (3).
PCT/SE2010/000007 2010-01-18 2010-01-18 Véhicule poids lourd WO2011087404A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2010/000007 WO2011087404A1 (fr) 2010-01-18 2010-01-18 Véhicule poids lourd

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2010/000007 WO2011087404A1 (fr) 2010-01-18 2010-01-18 Véhicule poids lourd

Publications (1)

Publication Number Publication Date
WO2011087404A1 true WO2011087404A1 (fr) 2011-07-21

Family

ID=44304478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2010/000007 WO2011087404A1 (fr) 2010-01-18 2010-01-18 Véhicule poids lourd

Country Status (1)

Country Link
WO (1) WO2011087404A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929200A (en) * 1972-10-05 1975-12-30 Eaton Corp Drive transfer gear assembly for four-wheel drive vehicle
US4050534A (en) * 1975-02-13 1977-09-27 Eaton Corporation Drive axle system useable in 6 × 6 vehicle
US4823897A (en) * 1986-11-04 1989-04-25 Daimler-Benz Aktiengesellschaft Drive arrangement for all-wheel drive vehicles
US4862987A (en) * 1986-08-08 1989-09-05 Paul Legueu All-wheel-drive off-highway vehicle
WO2005047083A1 (fr) * 2003-11-13 2005-05-26 Trackaxle Pty Ltd. Train de direction pouvant etre commande

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929200A (en) * 1972-10-05 1975-12-30 Eaton Corp Drive transfer gear assembly for four-wheel drive vehicle
US4050534A (en) * 1975-02-13 1977-09-27 Eaton Corporation Drive axle system useable in 6 × 6 vehicle
US4862987A (en) * 1986-08-08 1989-09-05 Paul Legueu All-wheel-drive off-highway vehicle
US4823897A (en) * 1986-11-04 1989-04-25 Daimler-Benz Aktiengesellschaft Drive arrangement for all-wheel drive vehicles
WO2005047083A1 (fr) * 2003-11-13 2005-05-26 Trackaxle Pty Ltd. Train de direction pouvant etre commande

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