CN104321562B - For performing the system and method for shuttle-type speed change by the actuating device of working truck - Google Patents

Abstract

The invention discloses a kind of method for performing shuttle-type speed change by the actuating device of working truck, wherein, actuating device includes power shaft, countershaft and multiple driven shaft, the plurality of driven shaft and power shaft and countershaft extend substantially in parallel.The method may include that the throw-out-of clutch making the first direction gear of the axis of orientation with multiple driven shafts be associated.First direction gear can be configured to make axis of orientation rotate along a first direction.Additionally, the method may include that the clutch making at least two gear of at least one the secondary driven shaft with multiple driven shafts be associated engages to reduce the rotating speed of axis of orientation, and after the rotating speed of axis of orientation reduces, the clutch making the second direction gear with axis of orientation be associated engages, in order to make axis of orientation rotate along second direction.

Description

For performing the system and method for shuttle-type speed change by the actuating device of working truck

Cross reference to related applications

The application based on and require enjoy on June 7th, 2012 submit to, entitled " System and Method for Performing Shuttle Shifts with a Transmission of a Work Vehicle " U.S. Provisional Patent Application No.61/656, the priority of 559, it is whole Individual disclosure is from there through with reference to being incorporated herein for all purposes.

Technical field

Subject of the present invention relates generally to working truck, and more specifically, the master of the present invention Topic relates to perform the system and method for shuttle-type speed change by the actuating device of working truck.

Background technology

Working truck, such as, agricultural vehicle, Bulldozer, offroad vehicle, load wagon and/or similar car , often including power speed changing actuating device, described power speed changing actuating device is equipped with execution The ability of shuttle-type speed change, wherein, the direct of travel of working truck can change need not operator In the case of speed gear or use clutch reversely.Such as, in order to by direct of travel from changing forward Becoming backward, operator can need the shuttle-type lever that is arranged in control cabinl pulpit simply from forward Position moves to backward position.

In order to improve productivity ratio and the efficiency of working truck, make efforts and reduced for passing Dynamic device performs the time quantum needed for shuttle-type speed change.But, in order to reduce execution shuttle-type speed change institute The time needed, it is necessary to increase the magnitude of the load transmitted by actuating device.Such as, in order to fast Perform shuttle-type speed change, it is necessary to by the clutch of actuating device in relatively short period of time section gram fastly Take the inertia of the high-speed component of actuating device and the momentum of working truck.This causes passing through clutch Device transmits substantial amounts of thermal force and torsion load, and otherwise they can destroy actuating device significantly Clutch and/or other parts.

At present, traditional shuttle-type method for changing speed utilization is associated with the direction gear of actuating device Clutch is so that the axle of actuating device slows down and makes its direction reverse.Such as, if working truck Advance initially along forward direction, then the clutch being associated with forward gear can start It is disengaged during shuttle-type speed change.Then, the clutch being associated with to backgear can be engaged to Make the one or more decelerations in actuating device axle or stop and make such a or multiaxis edge Contrary direction to accelerate.But, with forward gear and be associated to backgear one or many Individual axle is typically one or more high speed shaft, and it is direct that described high speed shaft is configured by power shaft Ground (or via countershaft indirectly) is driven.Thus, for forward gear with to back-geared Clutch is typically constructed to pass than the clutch being associated with other slow-speed shaft of actuating device Pass lower torsion load.Specifically, for forward gear and frequent to back-geared clutch It is less, and there is relatively low torque carrying capacity.As a result, in performing shuttle-type speed change The such clutch used can cause the clutch of actuating device and/or other parts significantly Destroyed.

Therefore, in the art by welcome be a kind of to be for perform shuttle-type speed change System and method, the described system and method for performing shuttle-type speed change reduces the biography of working truck The probability that one or more generations in the parts of dynamic device destroy.

Summary of the invention

Aspects and advantages of the present invention will partly be illustrated in the following description, or can from Lower explanation is it is clear that maybe can be by the learning by doing of the present invention.

On the one hand, subject of the present invention relates to a kind of for the actuating device by working truck The method performing shuttle-type speed change, wherein, actuating device includes power shaft, countershaft and multiple driven Axle, the plurality of driven shaft and power shaft and countershaft extend substantially in parallel.The method generally may be used To include: the clutch making the first direction gear of the axis of orientation with multiple driven shafts be associated takes off Open.First direction gear can be configured to make axis of orientation rotate along a first direction.It addition, should Method may include that at least two gear making at least one the secondary driven shaft with multiple driven shafts The clutch being associated engages to reduce the rotating speed of axis of orientation, and in the rotating speed reduction of axis of orientation Afterwards, the clutch making the second direction gear with axis of orientation be associated engages, in order to make direction Axle rotates along second direction.

On the other hand, subject of the present invention relates to a kind of for performing when operating working truck The system of shuttle-type speed change.This system generally can include actuating device, and described actuating device has Power shaft, countershaft and multiple driven shaft, the plurality of driven shaft and power shaft and countershaft the most flat Extend capablely.Driven shaft can include axis of orientation and at least one countershaft.It addition, this system can To include controller, described controller is communicably coupled to actuating device.Controller can construct Become to make the first direction gear with axis of orientation be associated when axis of orientation rotates along a first direction Throw-out-of clutch.Controller can be also configured to make and at least two of at least one secondary driven shaft The clutch that gear is associated engages, in order to take off at the clutch being associated with first direction gear Open the rotating speed reducing axis of orientation afterwards.It addition, after the rotating speed of axis of orientation reduces, controller The clutch that can be configured to make the second direction gear with axis of orientation be associated engages, in order to make Axis of orientation rotates along second direction.

With reference to description below and appended claims, it is better understood with this of the present invention A little and further feature, aspect and advantage.Comprise in the description and constitute of this specification The accompanying drawing divided shows embodiments of the invention, and is used for explaining the present invention together with description Principle.

Accompanying drawing explanation

For the ordinary skill in the art, the openest of the present invention (includes this Bright best mode) will illustrate in the description, this specification is with reference to accompanying drawing, in accompanying drawing:

Fig. 1 illustrates the side view of an embodiment of working truck；

The one of the actuating device that Fig. 2 uses in illustrating the working truck shown in being applicable in FIG The rough schematic view of individual embodiment；

Fig. 3 illustrates of the system for performing shuttle-type speed change by the actuating device of working truck The schematic diagram of individual embodiment；With

Fig. 4 illustrates of the method for performing shuttle-type speed change by the actuating device of working truck The flow chart of individual embodiment.

Detailed description of the invention

To introduce now embodiments of the invention in detail, show in the drawings in these embodiments One or more examples.Each example is provided as explaining the present invention rather than limiting the present invention. It practice, those skilled in the art it is evident that without departing from the scope of the present invention and The present invention can be carried out various modifications and changes in the case of spirit.Such as, as a reality Execute a part for example and shown or described feature can be used in another embodiment, in order to produce Another embodiment.Thus, the present invention will be intended to cover such as to fall at appended claims and These modifications and changes in the range of equivalent.

Referring now to accompanying drawing, Fig. 1 illustrates the side view of an embodiment of working truck 10.As Shown in figure, working truck 10 constructs as farm tractor.But, in other embodiments, Working truck 10 is it is so structured that known other suitable operation any in the art Vehicle, such as, other agricultural vehicles various, Bulldozer, load wagon and/or other offroad vehicle various.

As shown in fig. 1, working truck 10 includes a pair front-wheel 12, pair of rear wheels 14 and the end Dish 16, described chassis 16 is connected to take turns 12,14 and by wheel 12,14 support.Control cabinl pulpit 18 can be supported by the part on chassis 16 and can accommodate various control equipment 20 (such as, Lever, pedal, control panel and/or analog) for allowing operator to control working truck The operation of 10.Such as, in control equipment 20 can include shuttle-type lever (or shuttle-type Button), it is configured to allow for operator to premode, neutral pattern and backward operation pattern Between switch (including the ability carrying out the shuttle-type speed change of operator's startup).It addition, Operation Van 10 can include actuating device 24 and the electromotor 22 being arranged on chassis 16.Transmission fills Put 24 and (such as, via damping couple device) electromotor 22 and can be operably coupled to With provide the gear that regulates changeably than for by engine power via axletree/differential mechanism 26 It is delivered to take turns 14.Electromotor 22, actuating device 24 and axletree/differential mechanism 26 can be jointly Limit the power train 28 of working truck 10.

Should be appreciated that actuating device 24 generally can include known in the art any suitable When actuating device, it has multiple different fixed gear ratio.Such as, in some embodiments In, actuating device 24 may include that the power speed changing actuating device of multi-speed, its have multiple can The gear ratio (such as, multiple optional gears ratios forward and gear ratio backward) of choosing；With Multiple clutches being hydraulically actuated, it can be selectively activated, in order to makes actuating device With different gears than engaging.In such embodiments, clutch can be configured to by automatically Be bonded in actuating device 24.Such as, working truck 10 electronic controller 102 (with Lower with reference to described in Fig. 3) can be configured to suitable control command or signal are sent to transmission dress Put 24, instruct actuating device 24 actuation hydraulic piston or activate that other is suitable, be configured to make The actuator of clutch engagement/disengagement.In other embodiments, actuating device 24 can include Be suitable to other actuating device any for working truck 10, such as, the transmission of continuous variable Device.

It is also understood that the structure of the above-mentioned working truck 10 shown in Fig. 1 be provided only as by Subject of the present invention is placed in exemplary use field.Accordingly, it should be understood that the present invention's Theme can be adapted easily to any type of working truck structure 10.Such as, alternative Embodiment in, the single frame coupled with electromotor 22, actuating device 24 and differential mechanism 26 Frame or chassis can be arranged to the structure shared in less tractor.Other structure other Make can use articulated chassis so that working truck 10 turn to or rely on track replace wheel 12, 14.It addition, although it is not shown, working truck 10 can also be configured to operationally be joined Receive the work implement of any suitable type, such as, trailer, spray boom, excrement tank, fodder crushing Machine, plough and/or analog.

Referring now to Fig. 2, the operation be suitable to for above-mentioned is shown according to the aspect of subject of the present invention The rough schematic view of one embodiment of the actuating device 24 that vehicle 10 uses.As it can be seen, Actuating device 24 includes that multiple axle, the plurality of axle extend parallel to each other.Such as, transmission dress Put 24 and can include that power shaft 30, described power shaft 30 are operably connected to electromotor 22 Driven with by electromotor 22.Actuating device 24 can also include countershaft 32, described countershaft 32 extend parallel to for the ratio of gear backward promoting actuating device 24 with power shaft 30. It addition, actuating device 24 can include multiple driven shaft 34,36,38, the plurality of driven Axle 34,36,38 extends parallel to power shaft and countershaft 30,32, driven shaft 34,36, The 38 direct gears forming different stage engage the gear ratio for regulation actuating device 24.

Such as, as it can be seen, in the embodiment shown, actuating device 24 includes: axis of orientation 34, described axis of orientation 34 forms the direct gear of the first order and engages；Jackshaft 36, described centre Axle 36 forms the direct gear in the second level and engages；With output shaft 38, described output shaft 38 forms Three grades of direct gears engage.Axis of orientation 34 may be generally configured to directly or via countershaft 32 Driven indirectly by power shaft 30, in order to control driven shaft 34,36, the rotation side of 38 To, and thus, control the direct of travel (i.e., forward or backward) of working truck.Such as, By in the forward direction gear 46,48 (will be described below) of axis of orientation 34 is connect Synthesis makes the direct driving direction axle 34 of power shaft 30, and actuating device 24 can be with tooth forward Wheel ratio engages, and thus promotes working truck 10 to travel forward.Similarly, by by axis of orientation The backward directions gear 54 (will be described below) of 34 is bonded into so that power shaft 30 is via countershaft 32 driving direction axles 34 indirectly, actuating device 24 can with gear backward than engaging, by This promotes working truck 10 rearward movement.It addition, as in figure 2 it is shown, jackshaft 36 can be with structure Cause and driven by axis of orientation 34, and output shaft 38 can be configured to be driven by jackshaft 36. As generally understood, output shaft 38 can be connected to differential mechanism 26 to allow output shaft 38 Rotational motion be delivered to the wheel 14 of working truck 10.

Should be appreciated that in alternative embodiment, actuating device 24 can include any other The driven shaft of quantity engages rank to form corresponding number of direct gear.Such as, various In embodiment, actuating device 24 can only include that two driven shafts connect to form the direct gear of two-stage Close (such as, by including axis of orientation 34 and output shaft 38 simply), or actuating device 24 Can include that four or more driven shafts engage (example to form level Four or the direct gear of more stages As, by including axis of orientation 34, two or more jackshafts 36 and output shaft 38).

Additionally, actuating device 24 can also include being arranged on parallel axle 30,32,34,36, Multiple gears on 38.Such as, as it can be seen, in an illustrated embodiment, actuating device 24 Including eight pairs of gears, it is configured to provide eight gears forward and compares and four gear ratios backward. Specifically, as in figure 2 it is shown, actuating device 24 can include being installed to the first of power shaft 30 Input gear the 40, second input gear 42 and the 3rd input gear 44.First input gear 40 The first forward gear 46, described first forward gear 46 can be driven to be configured to and axis of orientation 34 It is selectively engaged.Similarly, the second input gear 42 can drive the second forward gear 48, Described second forward gear 48 is configured to be selectively engaged with axis of orientation 34.3rd input tooth Wheel 44 may be generally configured to drive countershaft 32.Such as, as in figure 2 it is shown, countershaft 32 permissible Including being arranged on this first pair of gear 50 on countershaft 32 and second pair of gear 52, first pair of tooth Wheel 50 is driven by the 3rd input gear 44.Second pair of gear 52 can drive backward then Gear 54, described is configured to be selectively engaged with axis of orientation 34 to backgear 54.

It addition, actuating device 24 can include the first driving gear 56 being installed to axis of orientation 34 Drive gear 58 with second and be installed to the 3rd driving gear 60 and 4 wheel driven of jackshaft 36 Moving gear 62.Drive gear 56,58,60,62 may be conventionally adapted to drive corresponding from Moving gear 64,66,68,70, described driven gear 64,66,68,70 be configured to in Countershaft 36 and output shaft 38 are selectively engaged.Such as, as it can be seen, in shown enforcement In example, first drives gear 56 can drive the first driven gear 64, described first driven tooth Wheel 64 is configured to be selectively engaged with jackshaft 36, and second drives gear 58 to drive Dynamic second driven gear 66, described second driven gear 66 is configured to and jackshaft 36 selectivity Ground engages.Similarly, the 3rd drives gear 60 can drive the 3rd driven gear 68, described 3rd driven gear 68 is configured to be selectively engaged with output shaft 38, and the 4th drives tooth Wheel 62 can drive the 4th driven gear 70, described 4th driven gear 70 to be configured to and output Axle 38 is selectively engaged.

Should be appreciated that in alternative embodiment, actuating device 24 can include any other The gear mesh of quantity, its be configured to provide any an appropriate number of gear forward than and backward Gear ratio.Such as, in some working truck, can desirably include for actuating device 24 Large number of gear mesh, thus provide large number of forward and/or reverse gear ratio (such as, the gear forward of 24 or bigger than) is to adapt to complicated load-up condition.

Additionally, as in figure 2 it is shown, actuating device 24 can also include multiple be hydraulically actuated from Clutch 72 engages with driven shaft 34,36,38 for making gear mesh.Specifically, Mei Geli Clutch 72 can with in such gear one (such as, the first forward gear 46, Two forward gear 48, to backgear 54, first driven gear the 64, second driven gear 66, 3rd driven gear 68 and the 4th driven gear 70) it is associated, i.e. described gear configurations becomes It is selectively engaged with in driven shaft 34,36,38.In several embodiments, each Clutch 72 can include one or more hydraulic piston or other suitable hydraulic actuator 74, it is configured to engage corresponding friction plate 76, described friction plate 76 be connected to gear and Both driven shafts.Thus, when the hydraulic fluid of pressurization is supplied in clutch 72, friction Plate 76 can pressurized together so that plate 76 is frictionally with rotatably engageable, thus Allow to transmit between two axles in parallel axle 30,32,34,36,38 torque.Such as, The clutch 72 being associated with the first forward gear 46 by actuating, can be via including first The gear mesh of input gear 40 and the first forward gear 46 passes to axis of orientation 34 from power shaft 30 Pass torque.It is likewise possible to it is the most relevant to these driven shafts 36,38 by activating One clutch 72 of connection transmits torque and from jackshaft 36 from axis of orientation 34 to jackshaft 36 Torque is transmitted to output shaft 38.Thus, by changing activateding in the actuating device 24 The combination of clutch 72 (that is, each driven shaft 34,36,38, a clutch 72), Actuating device 24 can engage than with gear ratio backward with various different gears forward.

Referring now to Fig. 3, illustrate for by working truck according to the aspect of subject of the present invention The actuating device 24 of 10 performs the schematic diagram of an embodiment of the system 100 of shuttle-type speed change. As it can be seen, system 100 can include that controller 102, described controller 102 are configured to control System is arranged in the behaviour of various parts that are in actuating device 24 and/or that be associated with actuating device 24 Make.Such as, will be described in more detail as following, controller 102 can couple communicatedly To one or more valves that are that be arranged in actuating device 24 and/or that be associated with actuating device 24 (such as, system valve 104 and multiple clutch valve 106), in order to control supply and fill in transmission Put the pressure of hydraulic fluid in 24, thus allow controller 102 to control actuating device 24 The joint of various clutches 72 and/or disengagement.

Should be appreciated that controller 102 generally can include any suitable computer and/or other Processing unit, including any suitable computer and/or the combination of other processing unit.Thus, In several embodiments, controller 102 can include one or more processor and be associated One or more storage devices, described storage device is configured to perform various by computer implemented Function.As it is used herein, term " processor " not only refers to as in the art The middle integrated circuit comprised by finger in a computer, and refer to controller, microcontroller, Pico computer, programmable logic controller (PLC), special IC and other can compile Journey circuit.It addition, one or more storage devices of controller 102 generally can include one Or multiple memory element, it includes but not limited to, computer-readable medium (such as, is deposited at random Access to memory (RAM)), computer-readable non-volatile media (such as, flash storage Device), floppy disk, compact disc read write (CD-ROM), magneto-optic disk (MOD), Digital versatile disc (DVD) and/or other suitable memory element.Such a or many Individual storage device may be generally configured to store suitable computer-readable instruction, described computer Controller 102 is configured to such as lead to by instructions when being performed by one or more processors Cross execution various by counting to perform referring to step and/or the computing of the method 200 described in Fig. 4 The function that calculation machine realizes.It addition, controller 102 can also include other suitable component various, Such as, telecommunication circuit or module, one or more input/output passage, data/control bus And/or analog.

It addition, system 100 can also include one or more sensor 108, it is configured to prison Survey the rotating speed of the various axles 30,32,34,36,38 of actuating device 24.Such as, as at figure Shown in 2 and Fig. 3, actuating device 24 can include being installed to each axle in one embodiment 30, on 32,34,36,38 and/or be arranged in each axle 30,32,34,36,38 One or more velocity sensor 108 (such as, shaft encoder, axle sensor and/or any its The velocity sensor that it is suitable), thus measurement axis rotating speed.Velocity sensor 108 can be then It is communicably coupled to controller 102, is delivered to one or more controller 102 to allow to test the speed For process subsequently and/or analysis.

Additionally, system 100 could be included for supplying hydraulic fluid to actuating device 24 In and/or interior various parts.Such as, as it can be seen, in an illustrated embodiment, system 100 Can include keeping tank 110, described holding tank 110 is configured to keep or additionally accommodate flow of pressurized Body is so that it is to be supplied in actuating device 24.It addition, system 100 can include pump 112, Described pump 112 is configured to hydraulic fluid from keeping tank 110 to transfer to be positioned at pump 112 downstream Pressure-control valve 104 (hereinafter referred to as " system valve 104 ").System valve 104 can communicate Be connected to controller 102, in order to make the operation of valve 104 to be electronically controllable, in order to Regulation is supplied to the pressure of the hydraulic fluid of the clutch 72 of actuating device 24.Thus, it should Understanding, system valve 104 generally can include that any suitable can be configured to provides variable pressure The electronic valve of output.Such as, in one embodiment, system valve 104 can include electronics electricity Magnetic activates proportioning valve or other suitable variable pressure control valve any.

By the operation of control system valve 104, controller 102 can be configured to regulation by hydraulic pressure Fluid is supplied to the specified pressure (hereinafter referred to as " system pressure ") of all clutches 72.Separately Outward, controller 102 can also be configured to each ground regulation supply liquid in each clutch 72 The pressure of baric flow body.Specifically, as it is shown on figure 3, each clutch 72 can include individually Clutch valve 106, described single clutch valve 106 is configured to regulation, and to be supplied to it relative The pressure (hereinafter referred to as " clutch pressure ") of the hydraulic fluid of the hydraulic actuator 74 answered. Each clutch valve 106 can be communicably coupled to controller 102, in order to makes valve 106 Operation can be electronically controllable.Thus, fill in transmission when specific clutch 72 is to be joined Time in putting 24, its clutch valve 106 can be controlled so as to liquid under given clutch pressure Baric flow body is supplied to corresponding actuator 74.

With above-mentioned system valve 104 similarly, it will be appreciated that clutch valve 106 is the most permissible Including any suitable electronic valve that can be configured to provide variable pressure to export.Such as, one In individual embodiment, each clutch valve 106 can include that electronic electromagnetic activates proportioning valve or appoints What its suitable variable pressure control valve.

During the operation of disclosed system 100, controller 102 can be configured to receive respectively The input of the system of kind.Such as, in several embodiments, (such as, controller 102 can be configured to One or more control equipment 20 in being contained in driver's cabin 18) receive shuttle-type speed change Order, instructs controller to perform shuttle-type speed change.When receiving shuttle-type shift command, controller 102 Can be configured to suitable control command is sent to clutch valve 106 for making actuating device The clutch 72 of 24 is according to disengaging referring to the method described in Fig. 4 and/or engaging.

Referring now to Fig. 4, illustrate for by working truck according to the aspect of subject of the present invention The actuating device 24 of 10 performs the flow chart of an embodiment of the method 200 of shuttle-type speed change. As it can be seen, the method 200 generally includes: step 202, make the axis of orientation with actuating device The throw-out-of clutch that is associated of first direction gear；Step 204, makes the pair with actuating device The clutch that at least two gear of driven shaft is associated engages to reduce the rotating speed of axis of orientation；With Step 206, makes relevant to the second direction gear of axis of orientation after the rotating speed of axis of orientation reduces The clutch of connection engages.

Generally, disclosed method 200 can at the direction gear with actuating device 24 (i.e., First forward gear the 46, second forward gear 48 and to backgear 54) clutch that is associated Do not have overheated or overload in the case of allow perform shuttle-type speed change.Specifically, open in shuttle-type speed change During the beginning, (if i.e., vehicle 10 is advanced forward, then direction gear is with the direction gear engaged First forward gear 46 or the second forward gear 48, if or vehicle travel rearwardly, then direction Gear is to backgear 54) clutch 72 that is associated can be disengaged, and thus makes power shaft 30 disengage from axis of orientation 34 and stop transmitting torque from electromotor 22 to actuating device 24. Hereafter, it not to make the clutch 72 being associated with relative direction gear engage immediately, but with At least two of the secondary driven shaft (such as, jackshaft 36 or output shaft 38) of actuating device 24 The clutch 72 that gear is associated can be engaged so that axis of orientation 34 stop or the additionally side of reduction To the rotating speed (such as, via " four squares (four-squaring) " effect) of axle 34.One Denier axis of orientation 34 is stopped or its rotating speed is additionally obviously reduced, then with relative direction gear phase The clutch 72 of association can be engaged to allow axis of orientation 34 to turn along contrary direction then Dynamic.

Should be appreciated that the clutch being associated by use with jackshaft 36 and/or output shaft 38 72 make axis of orientation 34 stop or additionally reduce axis of orientation 34 rotating speed and then by use with The clutch 72 augment direction axle 34 that suitable direction gear is associated is along contrary direction Rotating speed, the load transmitted by actuating device 24 during shuttle-type speed change can difference group from It is shared between clutch 72 or separates.Like this, each clutch 72 the average load carried Lotus can reduce.Further, since the clutch 72 being associated with jackshaft 36 and output shaft 38 The firmest and have apparently higher than the clutch 72 being associated with axis of orientation 34 Torque carrying capacity, such clutch 72 is better equipped to distribute during shuttle-type speed change Heat and/or restrain oneself and make the load that axis of orientation 34 slows down and/or stop is associated.Thus, pass through Use the clutch 72 being associated with jackshaft 36 and output shaft 38, be associated with shuttle-type speed change Heat and torsion load thus can prevent from the weaker clutch 72 of axis of orientation 34 by carrying-off The damaged life and reliability with the whole actuating device 24 of enhancing of stop part.

It is also understood that in several embodiments, it is possible to use the controller of working truck 10 102 automatically carry out disclosed method 200.Such as, as it has been described above, controller 102 is permissible (such as, described operator input has shuttle-type shift command to be configured to receive operator's input Form), instruction will perform shuttle-type speed change.When receiving operator and inputting, controller 102 can Then to control to be supplied to the pressure of the hydraulic fluid of actuating device so that suitable clutch 72 Engage and/or disengage.

As shown in Figure 4, in step 202., when shuttle-type speed change starts, controller 102 can Disengage with the clutch 72 that the direction gear being configured to make with currently engage is associated, the thus side of making Disengage from power shaft 30 to axle 34.Especially, if working truck 10 is when shuttle-type speed change starts Advance along forward direction, then controller 102 can be configured to make and the first forward gear 46 Or second the clutch 72 that is associated of forward gear 48 disengage.Such as, controller 102 is permissible It is configured to be sent to suitable control signal one or more clutch valve 106, controls hydraulic pressure Fluid is supplied to clutch 72 for the first forward gear 46 or the second forward gear 48, with Just the pressure of the hydraulic fluid being supplied to this clutch 72 is reduced.Similarly, if Operation Van 10 advance initially along rearwardly direction in shuttle-type speed change, then controller 102 can be with structure Cause such as be supplied to the hydraulic fluid pressure of this clutch 72 by reduction and make with backward The clutch 72 that gear 54 is associated disengages.

It addition, in step 204, at the clutch 72 being associated with suitable direction gear After disengagement, controller 102 can be configured to make the independent driven shaft with actuating device 24 extremely The clutch 72 that few two gears are associated engages, in order to makes axis of orientation 34 stop or additionally subtracts The rotating speed of little axis of orientation 34.Such as, in several embodiments, driven for jackshaft 36 The clutch 72 of gear 64,66 can be engaged so that axis of orientation 34 stop or additionally slow down. Specifically, as in figure 2 it is shown, the first driven gear 64 and second being used for jackshaft 36 is driven The clutch 72 of gear 66 can simultaneously be engaged.In such embodiment it will be appreciated that, When shuttle-type speed change starts, one in the clutch 72 of jackshaft 36 can be engaged. Thus, the most suitable direction gear is disengaged in the step 202 of disclosed method 200, While the clutch 72 of the jackshaft 36 then previously engaged can engage keeping clutch Maintain and engage.As generally understood, the while of two clutches 72 of jackshaft 36 this Engaging generally to promote the rotating speed of both axis of orientation 34 and jackshaft 36 to reduce.

Those skilled in the art will should be appreciated that by making and two or more of same axle The clutch 72 that gear is associated simultaneously engages, and can provide " four squares " formula effect, whereby Make the one or more stop the most suddenly in the axle of actuating device 24.This in order to avoid occurring Situation, the clutch 72 being associated with such gear can by carefully modulation be supplied to from The pressure of the hydraulic fluid of clutch 72 and be only partially engaged, be thus arranged for axis of orientation 34 and the controllable reduction of jackshaft 36.Such as, as it has been described above, when shuttle-type speed change starts, Jackshaft 36 can include both the clutch 72 that engaged and unassembled clutch 72.Cause And, in order to make two clutches 72 be partially engageable with, it is supplied to the clutch previously engaged The hydraulic pressure of 72 can be gradually lowered, and is supplied to previous unassembled clutch 72 Hydraulic pressure can little by little raise.It is supplied to pressure this of the hydraulic fluid of clutch 72 Modulation generally can allow the rotating speed of axis of orientation 34 and jackshaft 36 without result in actuating device Reduce in a controlled manner in the case of 24 lockings suddenly, otherwise cause " four squares " of local Effect or controlled braking effect.As it is used herein, when the hydraulic pressure being supplied to clutch 72 The pressure of fluid is controlled so as to allow clutch 72 sliding on the special time period before locking During shifting, clutch 72 " being only partially engaged " or " by partly disengaging ".Such as, pressure Such minimum pressure can be controlled to, i.e. described minimum pressure is to make one for delivery Or multiple axle slow down with assigned rate needed for the minimum pressure that needs of amount of torque.

It is also understood that the clutch 72 when being used for jackshaft 36 is used for making axis of orientation 34 Rotate and stop or during the rotation of the axis of orientation 34 that additionally slows down, for the clutch of output shaft 38 72 can be completely disengaged, in order to makes jackshaft 36 disengage from output shaft 38, is therefore prevented from making The motion of industry vehicle 10 is affected by any change in the rotating speed of jackshaft 36.Or, One or more in the clutch 72 of output shaft 38 can be only partially engaged, thus The torsion load providing extra makes axis of orientation 34 and jackshaft 36 stop with help or additionally slows down. Can also allow for it addition, this part of one or more clutches 72 of output shaft 38 engages For effectively reducing the speed of working truck 10.

Engage as the clutch 72 making two or more gears with jackshaft 36 be associated Alternative scheme, with two or more clutches being associated in the gear of output shaft 38 72 can be engaged so that axis of orientation 34 rotate stop or the axis of orientation 34 that additionally slows down turn Dynamic.For example, referring to the embodiment shown in Fig. 2 and suppose jackshaft 36 at least one from Clutch 72 maintains and engages, with the 3rd driven gear 68 and the 4th driven gear of output shaft 38 It is (and middle that the clutch 72 that 70 are associated can simultaneously be engaged to reduce axis of orientation 34 Axle 36 and output shaft 38 rotating speed) rotating speed.In such an embodiment, with the above embodiments Similar, the clutch 72 for output shaft 38 can be only partially engaged (such as, by adjusting System is supplied to the pressure of the hydraulic fluid of clutch 72) to provide axis of orientation 34, jackshaft 36 Controllable reduction with output shaft 38.Additionally, by the clutch 72 of output shaft 38 is used as system Dynamic device, the speed of working truck 10 can simultaneously be slowed down.

Referring still to Fig. 4, in step 206, after the rotating speed of axis of orientation 34 is the most reduced, The clutch 72 that controller 102 can be configured to make to be associated with relative direction gear engage with Axis of orientation 34 is allowed to rotate along contrary direction.Such as, if working truck 10 is at shuttle-type Speed change initially along forward direction advance, then controller 102 can be configured to make with backward The clutch 72 that gear 54 is associated engages, and thus allows power shaft 30 along contrary direction Rotation direction axle 34.Similarly, if working truck 10 shuttle-type speed change initially along to After direction advance, then controller 102 can be configured to make and the first forward gear 46 or the second The clutch 72 that forward gear 48 is associated engages, and thus allows power shaft 30 along forward Direction rotation direction axle 34.

In one embodiment, it will be appreciated that as long as controller 102 can be configured to axis of orientation The rotation of 34 stops (or after the rotation of axis of orientation 34 stops) just being made and relative direction The clutch 72 that gear is associated engages.Such as, controller 102 can be configured to (via upper The sensor 108 stated) rotating speed of monitoring direction the axle 34 and rotating speed of axis of orientation 34 can be worked as The clutch 72 being reduced to when zero make to be associated with relative direction gear engages.Or, control Device 102 can be configured to the rotating speed of monitoring direction axle 34, in order to makes and relative direction gear phase The clutch 72 of association can be worked as rotating speed and be reached engaged during minimum speed threshold value.Such as, minimum Threshold speed can be corresponding with such rotating speed of axis of orientation 34, i.e. at described axis of orientation Think under the rotating speed of 34 that the clutch 72 being associated with relative direction gear can not make Clutch 72 is engaged in the case of transshipping or being overheated.

It addition, along with the clutch 72 being associated with relative direction gear is engaged, with in Clutch that the driven gear of countershaft 36 is associated 72 (and optionally, with output shaft 38 The clutch 72 that driven gear is associated) can be disengaged to allow axis of orientation 34 to add fast speed. Once axis of orientation 34 rotates with sufficiently large speed, then need for realizing desired gear ratio Clutch 72 (that is, with one of driven gear of jackshaft 36 and the driven tooth of output shaft 38 The clutch that one of wheel is associated) then can be supplied to such clutch by little by little increase The pressure of the hydraulic fluid of device 72 and be engaged, thus make actuating device 24 be fully engaged and Working truck 10 is allowed to advance along new direction.

Referring back to Fig. 2, in order to provide the particular example of disclosed method 200, can be false Determine working truck 10 driven for first forward gear the 46, first driven gear 64 and the 3rd The clutch 72 of gear 68 is advanced initially along forward direction in the case of being engaged.At shuttle When formula speed change starts, (that is, the direct of travel of instruction working truck 10 just switches from forward direction To rearwardly direction), the clutch 72 for the first forward gear 46 can be disengaged, by This makes axis of orientation 34 disengage from power shaft 30.It addition, for the clutch of the 3rd driven gear 68 Device 72 can completely or partially be disengaged.Hereafter, it is supplied to for the first driven gear The pressure of the hydraulic fluid of the clutch 72 of 64 can be gradually lowered, and is supplied to for The pressure of the hydraulic fluid of the clutch 72 of two driven gears 66 can little by little raise, thus Two clutches 72 making jackshaft 36 are partially engageable with allowing the rotating speed of axis of orientation 34 to subtract Little.When axis of orientation 34 stops rotating along its its original orientation (or when the rotating speed of axis of orientation 34 When being reduced to below minimum speed threshold value), for the first forward gear 64 He of jackshaft 34 The clutch 72 of the second forward gear 66 can be disengaged.For the clutch to backgear 54 72 can be engaged to allow axis of orientation 34 to rotate along contrary direction then.At axis of orientation After the rotating speed of 34 increases the most fully, suitable for jackshaft 36 and output shaft 38 Clutch can be engaged then, in order to makes actuating device 24 with desired gear than engaging.

Here the description write uses examples to disclose the present invention, including optimal mode, also makes Those skilled in the art can implement the present invention, including manufacturing and using any device or system And perform any method related to.The patentable scope of the present invention is by claims Determine, and other example that it will be apparent to one skilled in the art that can be included.These other Example is intended to be in the range of claims, as long as they include the book with claims Face language does not has different structural details, as long as or they include and claims Written voice does not has the equivalent structural elements of substantive difference.

Claims (10)

1. for the method performing shuttle-type speed change by the actuating device of working truck, described Actuating device includes power shaft, countershaft and multiple driven shaft, and the plurality of driven shaft is defeated with described Entering axle and described countershaft extend substantially in parallel, described method includes:

The clutch making the first direction gear of the axis of orientation with the plurality of driven shaft be associated takes off Opening, described first direction gear configurations becomes to make described axis of orientation rotate along a first direction；

At least one the secondary driven shaft with the plurality of driven shaft is made at least by below step The clutch that two gears are associated engages to reduce the rotating speed of described axis of orientation:

The part maintaining the clutch previously engaged of at least one secondary driven shaft described connects Close, and

Connect to the previous unassembled clutch part of at least one secondary driven shaft described in making Close；And

After the rotating speed of described axis of orientation reduces, make the second direction gear with described axis of orientation The clutch being associated engages, in order to make described axis of orientation rotate along second direction.

Method the most according to claim 1, wherein, makes and the side of the plurality of driven shaft The throw-out-of clutch being associated to the first direction gear of axle includes: make with described axis of orientation to Front gear or a throw-out-of clutch being associated in backgear.

Method the most according to claim 1, wherein, described in described maintenance, at least one is secondary The part of the clutch previously engaged of driven shaft engage include being incrementally decreased be supplied to described The pressure of the hydraulic fluid of the clutch previously engaged, and wherein, make described at least one The previous unassembled clutch part ground of secondary driven shaft engages to include little by little increasing and is supplied to institute State the pressure of the hydraulic fluid of previous unassembled clutch.

Method the most according to claim 1, wherein, makes with the plurality of driven shaft extremely The clutch that at least two gear of a few secondary driven shaft is associated engages and includes: make with described The clutch that at least two gear of the jackshaft of multiple driven shafts is associated engages.

Method the most according to claim 4, also includes: when the rotation of described axis of orientation stops Time only, make the throw-out-of clutch that at least two gear with described jackshaft is associated.

Method the most according to claim 4, also includes: when with described first direction gear During the throw-out-of clutch being associated, make to be associated with the gear of the output shaft of the plurality of driven shaft Clutch part ground or fully disengage.

Method the most according to claim 1, wherein, makes with the plurality of driven shaft extremely The clutch that at least two gear of a few secondary driven shaft is associated engages and includes: make with described The clutch that at least two gear of the output shaft of multiple driven shafts is associated engages.

Method the most according to claim 1, wherein, makes and the second party of described axis of orientation Engage to clutch that gear is associated and include: when the rotation of described axis of orientation stops, making with The clutch that described second direction gear is associated engages.

Method the most according to claim 1, wherein, makes and the second party of described axis of orientation The clutch joint being associated to gear includes: when the rotating speed of described axis of orientation drops to minimum speed Time below degree threshold value, the clutch being associated with described second direction gear is made to engage.

Method the most according to claim 1, wherein, at least one secondary driven shaft described Including jackshaft and output shaft, described method also includes: relevant to described second direction gear After the clutch of connection is engaged, make and the gear of described jackshaft and the gear of described output shaft The clutch being associated engages.