CN203868302U - Gear shifting system - Google Patents

Abstract

The utility model provides a gear shifting system which comprises a gear case, a gear shifting rod, a transmission mechanism, a servo mechanism, servo valve structures and a stop mechanism, wherein the stop mechanism comprises a stop plunger and a stop track and acts between an input actuating element or a part moving with the input actuating element and a gear shifting actuating rod or a part moving with rotation of the gear shifting actuating rod, so that when the stop plunger reaches a central recessed part of the stop track, a gear shifting rod reaches a neutral gear or another gear position. The gear shifting system provides a gear shifting command for the gear shifting rod to cause the feedback of an ideal gear shifting state of the gear shifting shaft, and the feedback feeling does not have any loosening feeling due to the fact that the stop mechanism is not completely positioned in a matching manner relative to the actual rotating position of the gear shifting actuating rod.

Description

Shifting system

Technical field

The utility model is intended to a kind of shifting system, and this shifting system comprises:

-gear-box, described gear-box has shifting shaft, and gearshift actuating rod is connected on this shifting shaft;

-away from the gear level of described gear-box;

-driving mechanism, described driving mechanism is for being delivered to described shifting shaft by gearshift order from gear level, this driving mechanism comprises hawser or bar, described hawser or bar are connected to gear level with one in its end, and its another end is connected to coupling assembly, described coupling assembly comprises at least two actuation elements, described at least two actuation elements comprise the mobile input actuation element in response to the gear level motion of described hawser or bar transmission, and gearshift actuating rod, wherein, between described input actuation element and gearshift actuating rod, there is the connection with limited play, the described connection with limited play allow described input actuation element and gearshift actuating rod relative position in finite displacement,

-servomechanism, described servomechanism is connected to shifting shaft, with this shifting shaft of auxiliary rotary;

-servovalve structure, this servovalve structure is controlled servomechanism for responding the position of described input actuation element that described input actuation element arranges and the relative positioning between the position of described gearshift actuating rod; And

-stop mechanism, described stop mechanism comprises catch piston and stop track, for the discernable feedback of gear shift operation is provided to gear level.

Background technique

This shifting system is for example learned from EP 2 140 176B1.Shifting system comprises gear level, and gearshift hawser is connected on this gear level, and gearshift hawser is delivered to input actuation element by gear level motion, and this input actuation element is a part for driving mechanism, for gearshift order is delivered to shifting shaft from gear level.In this case, input actuation element is valve controlling rod, and this valve controlling rod is rotatably connected in gearshift actuating rod, and described gearshift actuating rod is fixed on shifting shaft and from it vertically extends.Servocylinder is by servovalve structure control, and is connected to gearshift actuating rod, and it can be contributed to around its longitudinal axis Rotation With Changing gear shaft.Valve controlling rod comprises annular portion, and this annular portion has opening, and shifting shaft extends by this opening in the situation that having limited play.Valve controlling rod is arranged to being rotatably connected of actuating rod of gearshift the longitudinal axis that this spin axis being connected is parallel to shifting shaft, but longitudinal axis a distance of the described shifting shaft of distance.Servovalve structure comprises two relative servovalves, and it has the plunger of spring-biased, and this plunger is resisted against in the relative outer surface part of annular portion of valve controlling rod.Connection between valve control arm and gearshift actuating rod is the connection with limited play, this is because valve control arm can be with respect to the rotation of gearshift actuating rod, but the shifting shaft that this rotation is extended by the annular end of described valve control arm limits, and limited thus scope in rotary moving.This limited play connects the pure mechanically actuated of the shifting shaft that also allows in principle under servo failure condition, this is because after limited movement is depleted, manual force is passed to gearshift actuating rod by driving mechanism, and this gearshift actuating rod is Rotation With Changing gear shaft then.

If valve controlling rod moves the length travel of caused gearshift hawser and pivotable by gear level, valve controlling rod transfers torque to gearshift actuating rod on the one hand, on the other hand, valve control arm rotates with being rotatably connected of actuating rod of gearshift around it, and this causes the displacement of its annular portion.The skew positive control servomechanism of this relative positioning, this is because the rotation of valve control arm and the corresponding displacement of annular end thereof cause the displacement of the plunger of servovalve structure, the displacement of plunger activates again servocylinder, then servocylinder puts on shifting shaft by apply power in gearshift actuating rod by moment of torsion, thereby carries out the ideal gearshift motion of shifting shaft.The stop mechanism of stop track that comprises the stop plunger of spring-biased and cooperation mutually acts on valve controlling rod and with respect between the fixing part of gear case body.Described stop track is formed on an end of valve controlling rod, and comprises three depressed parts, and described three depressed parts are corresponding to two drive ranges with at middle neutral gear position.When valve controlling rod arrives such position and makes stop plunger arrive one of them depressed part, this provides feedback by the hawser that is connected on valve controlling rod and be finally connected on gear level, makes operator obtain the feedback of gearshift order.But stop mechanism acts between the static part in input actuation element (being valve controlling rod in the case) and casing, the input actuation element that makes operator only obtain driving mechanism has arrived the feedback of the position of gear level indication.By this way, can not guarantee real its desirable drive range that arrives of shifting shaft self.Therefore, the gearshift feedback feeling for operator can not provide the reliable indication of successful execution truly of gearshift order.

Another shortcoming is that the depressed part of stop track must have relatively wide or wide minimum point in each case, and this is because when driving mechanism is installed on gear-box, need to adjust the relative positioning of driving mechanism to adapt to the actual rotation location of shifting shaft.This adjustment of not following driving mechanism due to stop track rotatablely moves, but keep static, and stop plunger is followed the motion of driving mechanism, this adjustment to the actual rotational position of shifting shaft is accompanied by stop plunger moving along the minimum point of intermediate recess portion.Therefore, this minimum point must have specific width, to allow this adjustment.Therefore, when driver activates gear level, stop plunger finally moves to outside the intermediate recess portion of stop track can not provide good location (well-pointed), perceptible feedback, but is given in unrestricted motion or lax sensation in the transmission of gearshift order.

DE 198 39 850 B4 have described a kind of shifting system, the gear-box that it has gear level and comprises shifting shaft.There is driving mechanism, for gearshift order is delivered to shifting shaft from gear level.Servomechanism has servocylinder, and this servocylinder has the piston rod that is connected to gearshift actuating rod, and described gearshift actuating rod contributes to shifting shaft longitudinally to rotate around it.Controlling rod coaxially extends by piston rod, and enters in servocylinder, for controlling its operation.

Have input bar, this input bar is connected on axle, for the power in response to from gear level to input bar, rotates this axle.Described axle is accommodated in coaxial quill shaft.Described axle rotates in described quill shaft around its longitudinal axis, but its rotation mobility is restricted, for example, by the pin extending in the slit of certain width, limit, make pin to have determined rotation play between described axle and described quill shaft or limited range of movement along the distance of the width operation of slit.Described axle is connected on controlling rod by bar.By this way, gear level motion is transformed into rotatablely moving (in the situation that quill shaft is still static of axle through input bar, due to the Finite rotation play of axle in quill shaft), and by being connected to the bar of axle, being transformed into the motion of the controlling rod of servocylinder, the controlling rod of servocylinder is triggered again to support the gearshift campaign by the initial shifting shaft of the motion of input bar.Servocylinder acts on the bar that is connected in quill shaft, make to start to rotate described axle (this triggers servocylinder) afterwards in quill shaft at input bar, until the limited play of axle within quill shaft is depleted, servocylinder is supported the rotation of quill shaft, to realize the ideal gearshift motion of driving mechanism.Quill shaft plays the effect of shifting shaft.And, in this limited play connects, the in the situation that of servo fail, can realize in principle the gearshift of manual force, the gearshift of manual force be by first by through input bar be connected to the hawser rotatingshaft on axle, until axle and around quill shaft between Finite rotation play depleted, after this, further manual force is delivered to quill shaft from axle, if applied enough manual force, quill shaft is rotated thus, and the gearshift of realizing ideal.

Have stop mechanism, this stop mechanism comprises the stop plunger of spring-biased, and this stop plunger is fixed with respect to the casing of gear shifting system.Stop track is arranged on the outer surface of servocylinder.Stop track has three depressed parts, corresponding to drive range and the neutral gear position of shifting shaft.This stop mechanism provides the feedback of the gearshift campaign of servocylinder, and this feedback is returned gear level by controlling rod and input actuation element by indirect transfer.But does not directly feed back the position that whether arrives the location positioning of the input actuation element of being controlled by gear level for gear level.

In addition, there is the defect identical with said system in this system, that is: when driving mechanism is installed on gear-box with its casing and when adjustment it when adapting to the actual rotational position of shifting shaft, stop track and stop plunger must relative to each other move, the minimum point of each depressed part of stop track is had to quite wide, to allow this motion.Moreover because stop depressed part can not good location in the situation that having minimum point, unrestricted motion or lax sensation that this causes in transmission, therefore, cause coarse feedback feeling.

Finally, in the time of must being adjusted the actual rotational position (this actual rotational position is different according to gear-box) to adapt to shifting shaft in location, the operation that driving mechanism is installed to gear-box is very complicated.

U. S. Patent 4,287,784 have described a kind of shifting system, and wherein gear level is directly connected to input actuating rod, and input actuating rod is connected on shifting shaft through spline joint, and this allows input actuating rod with respect to the Finite rotation play of shifting shaft.Servocylinder acts on the servo actuation bar being fixed on shifting shaft.If input actuating rod is rotated by the gearshift campaign of gear level, input actuating rod is rotated a little with respect to shifting shaft, until this limited play is depleted, with respect to the motion of input actuating rod, this can trigger servocylinder, to act in gearshift actuating rod.The stop plunger of spring-biased is arranged in input actuating rod, and is crushed in the depressed part of shifting shaft.This stop plunger has with respect to shifting shaft bias voltage input actuating rod, to take to input the location placed in the middle of the spline joint between actuating rod and shifting shaft.After the operation of servocylinder has been triggered, stop mechanism causes the play of inputting in the spline joint between actuating rod and shifting shaft again to increase, to take neutral middle position.But, at servocylinder this stop mechanism of operation period, turn back to the discernable feedback that its depressed part can not provide actual gear shift operation to complete.

The transmission that the motion of pilot valve is transformed into the relative movement between stop plunger and stop track has the velocity ratio of about 0.2 (1:5) in this prior art systems.This means for 1.5mm start to open the typical servovalve motion with the arrival full open position of 3mm, this only allows 0.3 to 0.6mm motion between stop plunger and track.In actual conditions, this only allows stop mechanism to have such power, this power is along with stop plunger tapering partly moves forward into and goes out the cone shape hole of stop track and two mobile stop parts are concentrated, but it can not allow to have, the stop track of depressed part and biased piston can leave depressed part and along moving with the lateral region of depressed part adjacency.

Model utility content

The purpose of this utility model is to provide a kind of shifting system, this shifting system provides to shift gears to gear level orders the feedback of the ideal gearshift state that has caused shifting shaft, this feedback feeling is not due to the actual rotational position with respect to gearshift actuating rod, the stop mechanism any lax sensation due to location completely matchingly not, and this shifting system allows to remain under its complete center condition at stop mechanism, also in installation process, adjusted when adapting to the actual rotational position of shifting shaft in its position, more easily at gear-box place, assemble.

According to the utility model, stop mechanism is arranged such that it acts on (i) input actuation element or is connected to input actuation element and makes it follow the parts of motion of input actuation element; (ii) gearshift actuating rod or be connected to gearshift actuating rod it is followed between the parts that rotatablely move of gearshift actuating rod, the central concave portion that makes stop plunger arrive stop track represents that shifting shaft has arrived its neutral that input actuation element arranges or entered gear (in-gear) position.By this way, guaranteed that stop plunger engages the feedback of the central concave portion in stop track (this feedback turns back to gear level by inputting actuation element) and to shifting shaft, represents to shift gears to order correctly and carry out, that is, stop mechanism represents that the gearshift state that shifting shaft rotation gearshift state arranges with the position of inputting actuation element is consistent.

In this arrangement, the stop track with single central concave portion is enough, and this is that because stop mechanism has provided the expression whether shifting shaft arrives the position that input actuation element arranges, this is the information of an independent position (bit).In other words, its rotation drive range that stop mechanism indicates gear level to arrive to be arranged by gearshift actuation element when stop plunger arrives the central concave portion of stop track, and no matter this position of arranging is neutral gear position, forward gear position or retreats gear and put.In the prior art, in stop plunger or stop track one is static with respect to gear case body, therefore in stop track, always there are three depressed parts, each depressed part is corresponding to one in the gearshift state of shifting shaft, that is: the neutral gear position of shifting shaft, forward gear position and retreat gear and put.

In addition, three depressed parts of the stop track of prior art must be equipped with the minimum point of non-constant width, this be because stop plunger and stop track in the situation that the driving mechanism actual rotary position that driving mechanism rotates to adapt to shifting shaft a little with respect to shifting shaft while being installed to gear-box have to relative to each other move,, when carrying out this adjustment campaign, stop plunger moves along the minimum point of depressed part through having to.So the feedback that this stop mechanism provides can not provide accurately, feel clearly, but lax sensation.

Word " input actuation element or be connected to input actuation element make it follow the parts of input actuation element motion " is intended to represent not exist the free play that allows permanent skew between input actuation element and coupled parts, makes to be connected to any motion that parts on input actuation element are followed input actuation element.Equally, vocabulary " gearshift actuating rod or be connected to gearshift actuating rod make it follow the parts of rotational motion of gearshift actuating rod " is intended to be illustrated in the situation with the parts that are connected with gearshift actuating rod, do not exist and allow in gearshift actuating rod and be attached thereto the free play of the permanent skew between the parts that connect, any motion of the actuating rod that makes to shift gears causes proportional motion of connected parts.

Be to be noted that and according to shifting system of the present utility model, except servo auxiliary gear shift operation, also allow under specific circumstances the direct mechanical power transmission between gear level and shifting shaft, to realize its gearshift campaign.This is the very low and situation when stop plunger being moved under power required outside the central concave portion of stop track of the power of Rotation With Changing gear shaft, for example, when very low this power that makes of simultaneous force of gear-box can be transmitted by stop mechanism, and stop plunger Bu Huicong center depressed part is thrown off.In this case, power is delivered to shifting shaft with Rotation With Changing gear shaft from input bar by comprising the attachment portion of stop mechanism.This operator scheme will be called as " scene II " below, and utilize servo auxiliary operation will be called as " scene I ", in described scene I, stop mechanism is departed from, this is because applied force is enough large, it is large that the force rate stop plunger that makes to transmit by stop mechanism leaves the needed power of central concave portion, causes servocylinder to activate.But that first mentions seldom realizes under actual conditions according to the operation of scene II.

The operation scenario II that it should also be noted that shifting system of the present utility model provides the further advantage that is better than prior art.In this case, operator need to apply the required power of Rotation With Changing gear shaft, and does not need to apply the power along stop rail moving stop plunger (following the compression of biasing spring).On the contrary, in the prior art, wherein stop track is fixed with respect to casing and is had three stop depressed parts, and in every kind of situation of gearshift motion, stop plunger has to follow the compression of this its biasing spring to move to an adjacent stop depressed part from a stop depressed part.Shifting system of the present utility model does not need this power when it operates according to scene II.

In a preferred embodiment, comprise stop mechanism with until the parts of the driving mechanism of the remainder of shifting shaft be arranged on movably in the casing being connected with gear case body, make the location of described parts can adapt to the rotation location of shifting shaft, keep stop mechanism in its middle position, and stop plunger is arranged in the central concave portion of stop track simultaneously.Gearshift actuating rod for example can be included in the hub portion at one end thereof place, described hub portion has groove, and the end of this groove and shifting shaft is complementary, makes hub portion can be pushed on shifting shaft, wherein between hub portion and shifting shaft, there is spline joint, so that they are rotated fixing each other.Gearshift actuating rod is connected in the remainder of driving mechanism, and described driving mechanism is arranged in housing movably.Servocylinder also can be mounted in advance its piston rod and be connected to driving mechanism.The location of casing on gear case body fixed by the hole in casing, and the connecting element that is similar to bolt is installed in described hole.The rotation location of shifting shaft can change according to gear-box.Utilize the utility model, the location of shifting shaft can rotate to adapt in the hub portion that be connected to the end of shifting shaft, and this is accompanied by the motion of driving mechanism in casing.But, for the utility model, it is highly important that at this of driving mechanism and adjust between moving period, stop mechanism moves (at it, adjusting to the power of movement and transmission mechanism in the process of shifting shaft position very low and stop plunger can not be moved to outside the central concave portion of stop track) as a whole, make driving mechanism adjustment period between stop mechanism rest on its idle position accurately placed in the middle.In the prior art, on the contrary, the adjustment campaign that driving mechanism is aimed at the rotation location of shifting shaft is attended by stop plunger with respect to the relative movement of stop track, and stop track is fixed with respect to gear case body.Reason for this reason, the depressed part of the stop track of prior art must be provided with the minimum point of non-constant width, this is because Gai mechanism is when moving a little with respect to shifting shaft at driving mechanism to adapting to the actual rotational position of shifting shaft while being installed on gear-box, stop plunger and stop track must relative to each other move,, when carrying out this adjustment campaign, stop plunger must move along the minimum point of depressed part.

When casing is installed on gear-box, this adjustment of driving mechanism also allows simpler assembling process, wherein, during this process, when stop mechanism is remained on to its center condition, the location of driving mechanism still can be adjusted to the actual rotational position of gearshift actuating rod (and thus gear level).Casing and the shifting shaft at gear-box place that this means gear level, will be connected to the driving mechanism of gear-box have preposition separately, and the parts of driving mechanism can be connected to the gearshift actuating rod of shifting shaft, keeping i simultaneously) valve arrangement is not in triggering state, and ii) gearshift plunger is in the central concave portion of gearshift track, wherein, be connected to the hawser of gear level or the total length of bar is limited by the relative position between gear level and shifting shaft.

When in a preferred embodiment, this system is arranged such that at stop plunger in the central concave portion in stop track, the state that do not trigger of servovalve structure is identical with a plurality of positions of gearshift actuating rod for input bar.Thereby, as the described herein, represent the engagement positio of driving mechanism (, neutral or enter gear) the location of movable part of driving mechanism be not to be determined by the relative position with respect to its casing, and with respect to the relative position of shifting shaft, determine after being only firmly installed on shifting shaft and gear-box by driving mechanism.

In a preferred embodiment, stop track consists of single central concave portion, this single central concave portion by than the lateral region of the lower curvature of central concave portion around.This permission is arranged so that by central concave portion it is the depressed part of good location, arrives or leave the special moment of central concave portion at stop plunger, and it provides clear and accurate feedback feeling.

Preferably, the central concave portion of stop track is the most advanced and sophisticated complementary shape of stop plunger, the tip that makes stop plunger without play be contained in central concave portion,, in central concave portion, do not exist stop plunger starting to overcome the power of spring and can movably extend minimum point by it before leaving central concave portion, but when stop plunger starts along stop rail moving, the spring force that stop plunger overcomes it immediately moves, and this has provided the feedback feeling of good location on clear and position.

In a preferred embodiment, the lateral region of stop track is formed with so low curvature, the stop plunger that makes spring-biased does not move along overcoming spring-biased direction when the lateral region of stop track moves at stop plunger, or along overcome spring-biased direction move with when leaving or entering the central concave portion of stop track, compare fully little.When stop plunger arrives or leaves central concave portion, this provides feedback feeling clear and that location is good, and when gear level moves to target location, without any the lax sensation connecting.

In a preferred embodiment, stop mechanism be arranged such that the motion of servovalve structure and stop plunger with respect to the velocity ratio between the motion of stop track between 1.25 and 2.In typical situation, in servovalve structure, need the displacement distance between 1.5mm and 3mm to come to arrive full open position from the closed condition of valve.According to this mode of execution, this moves the stop plunger that is converted within the scope of 1.875mm and 6mm with respect to the movement of stop track.Move distance within the scope of this is wide enough so that can the be formed central concave portion of good location of stop track, its by smooth lateral region institute more or less around.

According to preferred implementation, servomechanism comprises valve controlling rod, and described valve controlling rod is also a part for driving mechanism; And two relative servovalves, wherein, described valve controlling rod has annular portion, and this annular portion is with opening, and axle is accommodated in this opening with limited play, to allow annular portion with respect to the displacement of axle.Valve actuating rod is rotatably connected to axle actuating rod or is connected with axle actuating rod it is followed on the parts of rotational motion of axle actuating rod, or is connected to input actuation element or is connected to input actuation element it is followed on the parts of motion of input actuation element.But this being rotatably connected defines and be contained in axle in the annular portion spin axis in the parallel skew of longitudinal axis, make the rotation of the valve controlling rod that driving mechanism causes cause the pivotable displacement of its annular portion.Utilize the plunger of spring-biased, two relative servovalves are resisted against in the relative surperficial part of annular portion of valve controlling rod, make to cause due to the displacement of its annular portion due to the rotatablely moving of valve controlling rod the plunger displacement of servovalve, this triggers servomechanism by operation servocylinder again, described servocylinder for example applies moment of torsion the gearshift actuating rod of extending and acts on shifting shaft by acting on from gear level along horizontal direction, thereby the ideal of supporting shifting shaft to turn to it is rotated drive range.

In the preferred implementation of this shifting system, input actuation element is identical with valve controlling rod, with respect to gearshift actuating rod or be connected to gearshift actuating rod and make it follow the parts of rotational motion of gearshift actuating rod, apart from its spin axis a distance, the parts of driving mechanism are connected on described valve controlling rod, the parts of this driving mechanism can be delivered to valve controlling rod from gear level by power, thus rotating valve controlling rod.Due to valve actuating rod and the gearshift spaced apart setting of longitudinal rotating shaft line being rotatably connected with shifting shaft between actuating rod, the power being applied on valve controlling rod by driving mechanism causes being applied to the moment of torsion on shifting shaft by gearshift actuating rod, make the gearshift order of being transmitted by the driving mechanism that comprises the input actuation element on valve control arm also mechanical transmission to gearshift stop rod, be delivered to thus on shifting shaft; Therefore, shifting shaft also can be rotated to this mechanical torque that shifting shaft transmitted from driving mechanism, and gearshift order in the situation that of servomechanism fault also can manually be carried out in principle.

Preferably, valve controlling rod is being rotatably connected to apart from its annular portion a distance in gearshift actuating rod, makes the rotation of the valve controlling rod due to driving mechanism cause the pivotable displacement of its annular portion, to trigger servomechanism.On the other hand, because valve actuating rod is rotatably connected in gearshift actuating rod in the longitudinal rotating shaft line a distance apart from shifting shaft, gear level is applied to through hawser or connecting rod the mechanical transmission that power on valve control arm also causes the moment of torsion on shifting shaft, to contribute to gear shifting force to realize the gearshift campaign of shifting shaft.This layout is corresponding to the shifting system of above-mentioned EP 2 140 176 B1, except the layout of stop mechanism represents the relative positioning between valve controlling rod and gearshift actuating rod.

In alternative embodiments, input actuation element be connected on actuator shaft can pivotable input actuating arm, this actuator shaft is rotatable around its longitudinal axis, this longitudinal axis is perpendicular to the longitudinal axis setting of shifting shaft.Another activate to transmit arm and is connected to actuator shaft, and wherein this actuator shaft is the axle of opening that extends through the annular portion of valve controlling rod.Valve controlling rod is rotatably connected to actuating passing shaft in the longitudinal axis a distance apart from actuator shaft.The end relative with annular portion of valve controlling rod is couple to gearshift actuating rod, makes valve controlling rod follow the rotational motion of gearshift actuating rod.By this way, valve actuating rod is followed the gearshift campaign of shifting shaft, and represents thus the gearshift location of shifting shaft.In this case, stop mechanism can act between valve controlling rod (being couple to shifting shaft) and actuator shaft (being couple to input actuation element), make result, stop mechanism arrives its center depressed part and represents that shifting shaft arrives its drive range of being arranged by input actuation element.

Accompanying drawing explanation

Below, with reference to the preferred implementation in accompanying drawing, the utility model is described, in figure:

Fig. 1 illustrates the perspective view of parts of the first mode of execution of shifting system;

Fig. 2 to 5 is illustrated in gear shift operation process, at a series of planimetric maps of subsequent stage the first mode of execution;

Fig. 6 illustrates the cross-sectional view of parts of driving mechanism of the second mode of execution of shifting system;

Fig. 7 illustrates the perspective view of parts of driving mechanism of the shifting system of Fig. 6;

Fig. 8 illustrates the perspective view of parts of the driving mechanism of Fig. 6 from the opposite side of Fig. 7;

Fig. 9 is illustrated in the cross-sectional view perpendicular to the driving mechanism of the shifting system of the second mode of execution of the graphics plane intercepting of Fig. 6;

Figure 10 is the perspective view of casing of driving mechanism of the shifting system of the second mode of execution; And

Figure 11 to 14 is illustrated in gear shift operation device in the stage subsequently, the view of a series of plane local transparents of the second mode of execution.

Embodiment

Now will first referring to figs. 1 through the first mode of execution shown in 5, the utility model be described.Shifting system comprises gear level (not shown), and this gear level is connected to hawser or bar (not shown) with its lower end, stick shift order is transformed into be connected to the length travel of hawser or the bar of shifting shaft.Hawser or bar utilize its other end to be connected to the input actuation element of driving mechanism, in this case, are connected to valve controlling rod 4.Valve controlling rod 4 comprises pillar 8, and this pillar 8, at one end thereof connection cable or bar, makes gear level order be passed to valve controlling rod 4.

Relative with pillar 8, valve controlling rod 4 is provided with the annular portion 6 that limits opening.This opening receives the end of the shifting shaft 1 of shifting system, and wherein, the external diameter of the end of shifting shaft 1 is less than the internal diameter of the opening in the annular portion 6 of valve controlling rod 4.Certainly, with the axle of which kind of type be contained in the annular portion of valve controlling rod 4 uncorrelated, as long as this axle does not move up in the side vertical with its longitudinal axis.This other axle being contained in annular portion 6 can be also coaxial with shifting shaft and be connected to the other axle on casing.

Servocylinder 20 is further provided, and it is connected in axle actuating rod 2 by the piston rod 24 of servocylinder 20, and wherein servocylinder acts in gearshift actuating rod 2 in the spin axis a distance apart from shifting shaft 1, makes servocylinder 20 on shifting shaft 1, to apply moment of torsion.Gearshift actuating rod 2 is for example rotatably fixed on shifting shaft 1 by spline joint, and any rotational motion of the actuating rod 2 that makes to shift gears is converted into rotatablely moving of shifting shaft 1.

When the operation of shifting system is below referenced the mode of execution shown in figure and describes, by always supposing that shifting system is called under the condition of " scene I " in the above, operate.This means the power that the required power of Rotation With Changing gear shaft need to be transmitted by driving mechanism, this driving mechanism comprises stop mechanism, and it causes stop plunger to overcome the intermediate recess portion that spring bias leaves stop track.The reason of describing the operation of this mode is only that servomechanism is just triggered in this case.

Valve controlling rod 4 is couple in gearshift actuating rod 2 by the connecting pin 10 being fixed in gearshift actuating rod 2.Connecting pin 10 is contained in the complimentary aperture of valve controlling rod 4, and valve controlling rod 4 and being rotatably connected of actuating rod 2 of gearshift are set up, wherein, and the central axes of spin axis and connecting pin 10.Valve controlling rod 4 is parallel to the spin axis of shifting shaft 1 with the spin axis being connected of gearshift actuating rod 2, but is offset with the spin axis of shifting shaft 1.In addition, the spin axis being connected of the valve controlling rod 4 that the pillar 8 being attached thereto from hawser or the bar of gear level is set up with connecting pin 10 is similarly spaced apart, and the spin axis of the connection that the gearshift order that makes to transmit as the length travel that is connected to hawser on pillar 8 or bar is set up around connecting pin 10 applies moment of torsion on valve controlling rod 4.Because connecting pin 10 is also spaced apart with the spin axis of shifting shaft 1, this has also implied the moment of torsion applying in gearshift actuating rod 2.But, in the first stage, the power on the pillar 8 of valve controlling rod of being applied to will can not cause being enough to rotate the moment of torsion in gearshift actuating rod 2 of this gearshift actuating rod 2, but in the starting stage of gear shift operation, the spin axis that valve controlling rod 4 is set up around connecting pin 10 is with respect to gearshift actuating rod 2 pivotables.Because this rotation has the isolated spin axis of annular portion 6 with valve controlling rod, this annular portion is around the spin axis pivotable of connecting pin 10, and this causes annular portion 6 with respect to shifting shaft 1 displacement being contained in its opening.Two relative pilot valves 22 lean with the outer surface part of the annular portion 6 of valve controlling rod 4.Therefore, the rotation of the valve controlling rod 4 that the pulling force/thrust on its pillar 8 causes will cause the pivot movement of annular portion 6, this annular portion 6 valve controlling rod 4 during around connecting pin 10 rotation by pivotable.This causes the plunger displacement of pilot valve 22, and this opens again one of them pilot valve.This activates servocylinder 20, power is applied in gearshift actuating rod 2, to shifting shaft 1 is rotated to desirable drive range along ideal orientation.The mechanism of describing is at present similar to describe in above-mentioned file EP 2 140 176 B1 that, and this document is referred to herein, for further describing of this mechanism.

Basic difference between the shifting system of learning from EP 2 140 176 B1 and the first mode of execution described here is intended to provide the joint of stop mechanism or departs from the discernable feedback producing, to provide the feedback of gearshift command execution.This stop mechanism acts between valve controlling rod and the stop track with respect to gear-box stationary positioned in the system of EP 2 140 176 B1.On the contrary, the utility model needs stop mechanism act on input actuation element (being valve controlling rod 4) and be rotatably connected between the gearshift actuating rod 2 on shifting shaft 1 in this example, makes the joint of stop mechanism provide the indication that gearshift actuating rod 2 (and so rotatable shifting shaft being fixed to the upper 1) arrives the position of being arranged by input actuation element (being valve controlling rod 4 in this case).

In this embodiment, stop mechanism comprises the stop plunger 14 of the spring-biased on the inclination extension part that is connected to axle actuating rod 2.Spring-biased is upwards pushed to stop plunger 14 on the stop track 16 on the lower surface that is arranged on valve controlling rod 4.Stop track 16 comprises single central concave portion 18, and on its both sides, is planar section substantially.When gearshift actuating rod 2 arrives the drive range of being arranged by input actuation element (in this case by valve control arm 4), stop plunger 14 turns back in the central concave portion 18 in stop track 16 with perceptible joint.

Thereby, the joint indication gearshift actuating rod 2 of stop mechanism reaches with respect to the consistent location of input actuation element (being valve controlling rod 4 in this case), and therefore the joint of stop mechanism provide gearshift actuating rod 2 and therefore shifting shaft 1 in fact arrive the signal of desirable rotational position.What the corresponding gearshift that therefore, the joint of stop mechanism provides gearshift order correctly to change into shifting shaft 1 was rotated correctly and directly feeds back.In addition, stop mechanism increases rigidity to system, and reduces to relax, and to prevent unexpected gear change, and has reduced the needs for the correct aligning of driving mechanism and the precision tolerance of installation.

What should also be pointed out that is to utilize the utility model, the stop track with single central concave portion 18 is enough to provide shifting shaft 1 to arrive the feedback of desirable drive range (gearshift forward, neutral, gearshift backward), this is because stop mechanism is input actuation element (being valve controlling rod 4 in this case) and the relative positioning ied of gearshift between actuating rod 2 to be represented, and this constant relative positioning between described two parts can be represented by the stop mechanism that comprises the stop track with single central concave portion 18.Thus, can say that stop mechanism is that power is relevant completely, and not relevant with respect to any component locations, described any parts are fixed with respect to gear-box or static (in other words, position independently represents that whole stop mechanism can move with respect to shifting shaft).More particularly, the relevant state that has implied stop mechanism of the power of stop mechanism, that is: stop plunger, with respect to the position of central concave portion, is only determined by the motion of the required parts of the rotational motion that realizes shifting shaft and the power acting between these parts.When on all parts, the inertia between these parts and friction are left in the basket, if these advocate to act on in lower member and with the power between lower member:

1. the pillar 8) connecting through hawser or bar;

2.) through the annular portion 6 of the controlling rod 4 of the valve plunger of the spring-biased of air and valve 22;

3.) comprise the stop mechanism of the stop plunger being spring-biased in central concave portion;

4.) gearshift actuating rod and shifting shaft.

Connection between valve controlling rod 4 and gearshift actuating rod 2 is the connection with limited play, and this is because the connection that valve controlling rod 4 can be set up around connecting pin 10 with respect to gearshift actuating rod 2 is pivoted to the degree that the opening in annular portion 6 allows.Utilize the utility model, the discernable feedback that the joint of stop mechanism produces is provided, realize the consistent location that is to input between actuation element (being valve controlling rod 4 in this case) and gearshift actuating rod 2, and regardless of the limited play of the connection between these parts.

With reference to Fig. 2 to 5, be described in gear shift operation process as the operation of first mode of execution of summarizing above, Fig. 2 to 5 is illustrated in a series of motion stages in the implementation of gearshift order.Fig. 2 to 5 illustrates the front schematic view of the first mode of execution shown in the perspective view in Fig. 1.

Fig. 2 is illustrated in the shifting system under original state, that is, and and the neutral gear position of shifting shaft, and the corresponding neutral position of the valve controlling rod 4 of therefore shift gears actuating rod 2 and conduct input actuation element.More particularly, Fig. 2 illustrates the non-triggering state of neutrality of valve 22.So far it will be appreciated that because advantage of the present utility model makes stop mechanism all placed in the middle in all three positions of shifting shaft, Fig. 2 can represent all these three positions (enter forward gear, keep off and neutral as retreated) of shifting shaft.But, in order to illustrate and simple cause, hypothesis Fig. 2 is represented to the neutral position state of shifting shaft.Thereby, gear level displacement, the motion of this gear level is connected to hawser or the bar transmission of the pillar 8 of valve controlling rod 4.In this example, pulling force is applied on pillar 8, acts on the direction of the left-hand side in Fig. 2 to 5.This stopping power causes on valve controlling rod 4 moment of torsion with respect to gearshift actuating rod 2 around connecting pin 10, and this has caused again the moment of torsion in gearshift actuating rod 2, and by connecting pin 10, the spin axis around shifting shaft 1 transmits this moment of torsion.But, may need high moment of torsion, to rotate gearshift actuating rod 2 Rotation With Changing gear shaft 1 (the describing and in the following description, operational condition always supposes to be called the situation of scene I above at this of operation that is again pointed out that shifting system, this has implied the operation of servocylinder) thus.In the starting stage, the moment of torsion being applied on valve controlling rod 4 only causes valve controlling rod 4 around the pivot movement of controlling little 10, and gearshift actuating rod 2 and shifting shaft 1 are still at initial position.This situation is shown in Figure 3, and Fig. 3 shows gearshift actuating rod 2 still at its not mobile initial position, and valve controlling rod 4 rotates with respect to axle actuating rod 2 around connecting pin 10 by the pulling force on its pillar 8.Because the spin axis that annular portion and the connecting pin 10 of valve controlling rod 4 are set up is spaced apart, this pivot movement of valve controlling rod 4 causes annular portion with respect to the displacement of the shifting shaft 1 in be contained in annular portion 6 opening.Shown in Fig. 3 in the situation that, the gear level 1 that this displacement of annular portion 6 is extended by the opening in annular portion 6 limits.

It should be noted this pivoted position at valve control arm 4, in this position, limited play with respect to gearshift actuating rod 2 is depleted, between valve controlling rod 4 and gearshift actuating rod 2, will have the connection of direct force transmission, this is because the further pivotable of the valve controlling rod 4 that the further displacement of pillar 8 in its lower end causes must be followed around the rotational motion of the spin axis of shifting shaft 1 by gearshift actuating rod 2.Therefore,, even the in the situation that of servo supporting element fault, this limited play connection will still allow this system manual shift, as long as enough power applies by hawser or bar on the pillar of gear level and valve controlling rod 4.

Under any circumstance, as shown in Figure 3, the plunger that the pivotal displacement of the annular portion 6 of valve controlling rod 4 has the spring-biased of a pilot valve 22 is displaced in valve, and the effect that the plunger of another pilot valve 22 has further shifted out from valve.This has the pilot valve 22 that plunger has been pushed into wherein and is opened, and other servovalves 22 keep the effect of cutting out.Opening of pilot valve 22 on right-hand side activates servocylinder 20 (seeing Fig. 1), to act in gearshift actuating rod 2, to realize the ideal of shifting shaft 1, rotates.In this embodiment, gearshift actuating rod and servovalve intention are to be contained in the identical casing (not shown) of driving mechanism.But as should be understood, the utility model is not limited to this, and servovalve can act on different bars, and for example, in the position of the casing away from driving mechanism (not shown), Rotation With Changing pin 1 thus.

As also seen in Fig. 3, valve controlling rod 4 has the effect of the central concave portion 18 of the stop track 16 on the lower end that stop plunger 14 leaves valve controlling rod 4 with respect to the initial pivot movement of gearshift actuating rod 2 (gearshift actuating rod 2 still keep not moving at this initial position).

As can be seen, stop track 16 has central concave portion 18, and it has substantially the shape with the tip complementation of stop plunger 14.On the both sides of central concave portion 18, there is the smooth lateral region substantially of stop track 16, when stop plunger 14 moves along smooth lateral region, this lateral region can not cause this stop plunger 14 to overcome the further displacement of its spring-biased.In other words, stop mechanism only causes feedback feeling when valve controlling rod 4 arrives or leaves its middle position, and in described middle position, described stop plunger is contained in the central concave portion of stop track 16.In addition, because stop track 16 is approximately that the velocity ratio of the relative movement between servo plunger motion and stop plunger 14 and stop track 16 is approximately 2 from roll pin 10 to causing the twice of distance at center of annular portion 6 of servovalve plunger displacement large apart from the distance of the run-on point around pin 10.In the situation that the 1.5mm of servovalve plunger to the typical displacement of 3mm to take servovalve to full open position, the corresponding sports scope of stop plunger 14 relative stop tracks 16 is that about 3mm is to 6mm.The corresponding extension part of stop track 16 allows stop track to be formed with the central concave portion of good location and the lateral region of adjacent substantially flat, this has provided the ideal force characteristic with central peak, position when this central peak accurately arrives central concave portion 18 corresponding to stop plunger 14.

In the situation that servovalve 22 is opened, servocylinder acts in gearshift actuating rod 2, and rotates thus gearshift actuating rod 2, to follow valve controlling rod 4.This situation is shown in Figure 4.Simultaneously, act on the power of attempting to reach state of equilibrium or center condition in system, that is, the biased piston of valve 22 and stop mechanism 18,14 applied forces arrive the central axis of the annular portion of further auxiliary control rod 4 and shifting shaft 1 in neutrality or concentric position, as shown in Figure 5.

When servocylinder 20 has rotated the gearshift actuating rod 2 desirable pivotal position of arrival, this ideal pivotal position is corresponding to the desirable pivotal position of shifting shaft 1 position of arranging corresponding to input actuation element, in this case, the relative position between valve controlling rod 4, valve controlling rod 4 and gearshift actuating rod 2 is again identical with initial position 2.This also has following consequence, that is: when gearshift actuating rod 2 arrives the drive range that input actuation elements (being valve controlling rod 4 in this case) arrange, stop mechanism arrives its engagement positio again, makes completing of actual gearshift order represent gearshift actuating rod 2 also so the shifting shaft 1 desirable pivotal position of arrival coincides with the engaging of stop mechanism that stop plunger 14 arrives the central concave portion of stop track 16 again.Drive range is shown in Figure 5.

Also should be noted that, the spring force of pilot valve 22 and stop mechanism is connected bias voltage is provided at the limited play of valve controlling rod 4 and axle actuating rod 2, bar is taken to relative positioning placed in the middle, wherein, shifting shaft 1 is placed in the middle within the opening of the annular portion 6 of valve controlling rod 4.

Parts shown in Fig. 1 (except shifting shaft) can be assembled in casing in advance, and then this casing is fixed on gear case body.The location of this casing on gear case body predetermined by the hole receiving in the casing of fastening piece.In installation process, in the hub portion of end with the gearshift actuating rod of opening, be pulled on shifting shaft, described opening and shifting shaft are complementary, and wherein said shifting shaft and hub portion comprise spline joint, make that their rotations are fixing goes up each other.In the process of this installation procedure, may need the rotational position of adjusting gearshift actuating rod to adapt to the position of shifting shaft, make spline joint alignment.The miscellaneous part being connected in gearshift actuating rod is followed this motion.A key character of the present utility model is that stop mechanism participates in this motion as a whole, but rest on its idle position placed in the middle, this is because adjusting the related power in location is too low power, can not make stop plunger move to outside the central concave portion of stop track.In the prior art, parts of stop mechanism, for example stop track is fixed on gear case body.In this case, it is followed driving mechanism adjustment by the motion of stop plunger to adapt to the motion of the rotational position of shifting shaft, so stop plunger is with respect to the depressed part skew of stop track.Therefore, static stop track has to have broad minimum point, and to allow this motion, this produces free play or lax sensation in transmission.

We forward the second mode of execution of the shifting system shown in the various views in Fig. 6 to 14 to now.First, the general arrangement of this system is described with reference to Fig. 6 to 10.This system comprises input actuation element 34 (seeing Fig. 6), and this input actuation element 34 is rod type, at its outer end H load-bearing pillar 38.Pillar 38 is arranged to be connected on hawser or bar (not shown), for being connected to gear level (not shown).Input actuation element 34 is fixed on actuator shaft 36, and actuator shaft 36 is supported in the bearing of casing 28 (seeing Fig. 6) of driving mechanism.Input actuation element 34 is rotatably fixed on this actuator shaft 36, makes actuator shaft 36 to follow any pivot movement of input actuation element 34 around the corresponding rotation of its longitudinal axis.Activate transmission arm 35 and be rotatably fixed to equally on actuator shaft 36, make to activate any pivotable that transmission arm 35 is followed the input actuation element 34 transmitting through actuator shaft 36.

Valve controlling rod 4 is connected to stop and transmits on arm 35 by being contained in connecting pin 10 in the boring of valve controlling rod 4, makes this valve controlling rod 4 can be around the central axis rotation of connecting pin 10.But this spin axis being rotatably connected is parallel to the longitudinal axis of actuator shaft 36 is offset with this longitudinal axis.In this case, this of valve controlling rod 4 is rotatably connected and is and activates being connected of transmission arm 35, and it is to be connected on input actuation element 34 to make it follow the parts of the motion of input actuation element 34 that arm 35 is transmitted in this actuating.

Valve controlling rod 4 has annular end 6 (for example, seeing Fig. 8), and this annular end has opening, and actuator shaft 36 extends through this opening, and wherein, the internal diameter of the opening of annular portion 6 is greater than the external diameter of actuator shaft 36.The end bearing actuating rod 44 relative with its annular portion 6 of valve controlling rod 4, this actuating rod 44 is fixed on valve controlling rod 4.

Actuating rod 44 extends through in the slotted hole in the end of piston rod 24 of servocylinder 20 (specifically seeing Fig. 8).The 25Nei hole, end of piston rod 24 is oblong, makes when servocylinder 20 activates, and piston rod 24 is carried out linear motion, and valve controlling rod 4 is driven through actuating rod 44 thus simultaneously, to carry out pivot movement.

The end with respect to valve controlling rod 4 of actuating rod 44 is contained in the boring of gearshift actuating rod (not shown in Fig. 6 to 10).Gearshift actuating rod can be roughly parallel to valve controlling rod 4 and extend.The relative end of boring with receiving actuating rod 44 of gearshift actuating rod comprises hollow hub portion or sleeve, it has chamber, this chamber is suitable for being pulled on the end of shifting shaft (not shown), this shifting shaft can extend coaxially with actuator shaft 36, and can with actuator shaft extending to right hand side direction in the view of Fig. 6 relatively.Chamber and the shifting shaft of the hub portion of gearshift actuating rod are provided with spline joint, and shifting shaft is fixed in the actuating rod that makes to shift gears rotation, and the latter still can carry out linear motion along its longitudinal axis simultaneously.

Stop mechanism acts between actuator shaft 36 and valve controlling rod 4.Especially, have the boring of extending perpendicular to its longitudinal axis in actuator shaft 36, stop plunger 14 parts of spherical formula are contained in this boring.In the boring of actuator shaft 36, spring is positioned on the internal surface of the annular portion 6 that along outward direction, ball 14 is pushed to valve controlling rod 4.The internal surface of the annular portion 6 of valve controlling rod 4 forms stop track 16.

As for example can seen in Fig. 8 or in Figure 11 to 14, stop track 16 comprises single central concave portion, has the smooth lateral region substantially of extending to its both sides from this central concave portion 18.By this way, only when stop plunger 14 arrives or leaves central concave portion 18, stop mechanism just produces power, and in the lateral region of low curvature, the spring of stop mechanism remains on constant compression.In addition, be pointed out that possibly, this stop mechanism act on be connected to input actuation element 34 make it follow input actuation element motion parts (that is, actuator shaft 36) and be connected to gearshift actuating rod it followed between the parts (being valve controlling rod 4) of motion of the actuating rod of shifting gears.Be appreciated that according to property feature of the present utility model, stop mechanism can be arranged in a lot of other modes.For example, in being similar to the layout shown in Fig. 6, stop mechanism can act on stop and transmit between arm 35 and valve controlling rod 4 or between input actuation element 34 and valve controlling rod 4.

In Fig. 9, show by the casing 28 of driving mechanism and the cross-sectional view of servocylinder.As seen in figure, piston rod 24 has end 25, and this end has slotted hole, and the actuating rod 44 being connected on valve controlling rod 4 is passed this slotted hole.

The piston rod 24 of servocylinder 20 is couple to actuating rod 44, and actuating rod 44 is couple to gearshift actuating rod in a distance of the spin axis apart from shifting shaft again, makes servocylinder on shifting shaft, to apply moment of torsion through actuating rod 44 and gearshift actuating rod 2.

In Figure 10, the corresponding perspective view of casing 28 is shown, this casing 28 has opening side, by it, can see piston rod 24, and the end 25 of the expansion of piston rod 24 comprises slotted hole, and actuating rod 44 extends through this slotted hole.The remainder of driving mechanism, as invisible in the view of Figure 10 in valve controlling rod 4, connecting pin 10, actuating transmission arm 35 and actuator shaft 36, the inwall 29 (seeing Fig. 6) that is transmitted the casing 28 of mechanism due to them covers.Driving mechanism can be pre-assembled in casing 28.Then casing 28 utilizes visible opening side in Figure 10 to be installed on gear case body, wherein, location is determined by visible four borings in Figure 10, securing means can be introduced by described four borings, and extend in the respective bore in gear case body, so that casing 28 is fixed to gear case body.In installation process, first, actuating rod is arranged on the shifting shaft of gear-box.For this purpose, gearshift actuating rod has hub portion or sleeve in one end thereof, and this hub portion or sleeve have chamber, and this chamber is suitable for receiving the end of shifting shaft, and wherein, shifting shaft and hub portion comprise spline joint, they are rotated each other fixing.Then the casing shown in Figure 10 28 is positioned on the wall of gear-box.In this number of assembling steps process, the end of actuating rod 44 is inserted in the corresponding chambers forming in the other end relative with hub portion of gearshift actuating rod, and described hub portion and shifting shaft rotation are fixing.In this number of assembling steps process, may need the rotational position of adjusting gearshift actuating rod (it is fixing with shifting shaft rotation) to adapt to the physical location of actuating rod 44, make this actuating rod 44 can be contained in the complimentary cavity of gearshift actuating rod indoor.For this purpose, may need the actuating rod 44 that is shifted a little, this is attended by valve controlling rod 4 and until the motion of the remainder of the driving mechanism of input actuation element 34.Key character of the present utility model is that stop mechanism participates in this motion as a whole, and rests on its accurate idle position placed in the middle.In the prior art, a part of stop mechanism, for example stop track is fixed on casing.In this case, it is attended by the motion of stop plunger driving mechanism adjustment to adapt to the motion of the rotational position of shifting shaft, and therefore stop plunger is offset with respect to the depressed part of stop track.Therefore static stop track must have extension minimum point in stop depressed part, to allow this motion.But the shortcoming of this extension minimum point or depressed part is that they are given in free play or lax sensation in transmission, and according to the utility model, stop track has clearly, the central concave portion of good location.

In the installation process of superincumbent description, first gearshift actuating rod is rotatably fixed on shifting shaft, and the opposed end of the actuating rod of after this shifting gears has been connected to actuating rod 44.Also possible is that first gearshift actuating rod is connected to actuating rod 44 and then utilizes it opposed end that comprises hub portion to be pulled on the end of shifting shaft.In the process of this number of assembling steps, may need by rotating a little position that gearshift actuating rod adjusts gearshift actuating rod to adapt to the rotational position of shifting shaft, the spline joint of make to shift gears actuating rod and shifting shaft engages.This motion of adjustment a little of gearshift actuating rod is attended by the motion of the remainder of driving mechanism.But in this case, stop mechanism participates in this motion as a whole, and therefore remain on its neutral center condition.

By the direction along being substantially perpendicular to the elongation of input actuation element 34, power is applied to be connected on the hawser of the pillar 38 of input on actuation element 34 or bar and starts gear shift operation.By this way, input actuation element 34 is around the longitudinal rotating shaft line pivotable of actuator shaft 36, and it is rotated the angle identical with the angle of inputting 34 pivotables of actuation element thus.Thereby actuator shaft 36 is to be connected to input actuation element 34 to make it follow the parts of the motion of input actuation element.Activate 35 rotations of transmission arm and be fixed on this actuator shaft 36, making to activate transmission arm 35 is to be also connected on input actuation element 34 to make it follow the parts of the motion of inputting actuation element.

When input actuation element 34 is rotated to realize gear shift operation, moment of torsion transmits arm 35 by actuating and connecting pin 10 is delivered to valve controlling rod 4.Because valve controlling rod is connected to gearshift actuating rod 2 by actuating rod 44, this also produces by actuating rod 44 and is applied to the moment of torsion in gearshift actuating rod.But when the high moment of torsion of needs is shifted gears actuating rod to rotate, the moment of torsion applying to gearshift actuating rod by valve controlling rod 4 and actuating rod 44 is not enough, it is motionless that the actuating rod 2 that makes to shift gears remains on its initial position.In this starting stage, the input rotation of actuation element 34 and the corresponding rotation of actuator shaft 36 cause valve controlling rod 4 to rotate around connecting pin 10, this is because the opposite end of valve controlling rod 4 is connected to gearshift actuating rod by actuating rod 44, and therefore can not follow the rotational motion that activates transmission arm 35.Formed valve controlling rod 4 causes stop plunger 14 to move with respect to central concave portion 18 around the rotatablely moving of longitudinal axis of connecting pin 10, wherein stop plunger is forced to leave the central concave portion 18 of stop track, and this is because be offset by pivot movement with the annular portion 6 of the isolated valve control arm 4 of spin axis around connecting pin 10.This causes the plunger skew of servo control method for making 22.A plunger of servo control method for making 22 will be shifted onto in valve by the skew of annular portion 6, and opens valve by this way.Opening of one of them pilot valve 22 activates servocylinder 20, and the actuating arm 2 that makes to shift gears is pivotable by the support of servocylinder 20, so that shifting shaft 2 is rotated to desirable drive range.Because valve controlling rod 4 is connected to gearshift actuating rod 2 by actuating rod 44, valve controlling rod 4 is forced to the motion of following gearshift actuating rod 2.

Input actuation element 34 and the connection being couple between the gearshift actuating rod 2 in actuating rod 44 are the connections with limited play, and it is by valve controlling rod 4 and actuating, to transmit being rotatably connected of arm 35 to set up.The actuator shaft 36 that this rotation play is extended by the opening of the annular portion 6 of valve controlling rod 4 limits.At input actuation element 34, in the starting stage of gear shift operation, be rotated and valve controlling rod 4 overcomes the resistance of gearshift actuating rod and shifting shaft and while rotating around connecting pin 10, the play transmitting in being connected of arm 35 with actuating at valve controlling rod 4 is depleted,, a part for inwall and the surface portion of actuator shaft 36 that limits the opening of annular portion 6 divide formation against, it is impossible making around the further pivot movement of the longitudinal axis of connecting pin 10.In this stage, between input actuation element 34 and gearshift actuating rod 2, exist power transmission to connect, this is to be delivered to gearshift actuating rod 2 because any further rotational motion of input actuation element 34 will be transmitted arm 35, valve controlling rod 4 and actuating rod 44 by actuating.By this way, for example, the in the situation that of servocylinder fault, when enough manual force are applied to gear level and be delivered to input actuation element 34 with Rotation With Changing gear shaft, likely manually realize in principle gear shift operation.

Below, with reference to Figure 11 to 14, be described in the operation of the second mode of execution in gear shift operation process.Figure 11 to 14 illustrates the schematic plan view of driving mechanism, and wherein, the longitudinal axis of actuator shaft 36 is perpendicular to drawing.In addition, some parts illustrate in transparent mode, make that for example stop plunger and stop track are visible by actuator shaft 36.Shifting shaft also extends perpendicular to paper, and the position under can the drawing in Figure 11 is coaxial with actuator shaft 36.Gearshift actuating rod 2 is extended in the initial position of the vertical lower of valve controlling rod 4, and the sub-fraction of the actuating rod 2 that makes only to shift gears is visible in Figure 11 to 14.

Figure 11 is illustrated in the shifting system of the second mode of execution under the original state of input actuation element 34 in its neutral position.Under this state, shifting shaft is also in neutral position.Now, gear level (not shown) is moved, and to start gear shift operation, and this gear level motion is delivered to through hawser or bar the pillar 38 being connected with one end of inputting actuation element 34.Gear level motion causes the linear displacement of hawser or bar, and this converts input actuation element 34 to around the pivot movement of the longitudinal axis of actuator shaft 36, and wherein said input actuation element 34 is connected on described actuator shaft 36.This causes the corresponding rotation of actuator shaft 36 and activates the corresponding sports that transmits arm 35.Valve controlling rod 4, transmits arm 35 because it is connected to activate by connecting pin 10, by following, activates the pivot movement that transmits arm 35, and still the end relative with annular portion 6 due to it is connected to gearshift actuating rod 2 and can not does like this through actuating rod 44.Owing to needing high moment of torsion in order to rotate gearshift actuating rod 2, the resistance of gearshift actuating rod 2 rotates around the central axis of connecting pin 10 with the combined valve controlling rod 4 that causes of pivot movement that arm 35 is transmitted in actuating.This rotation is shown in Figure 12.Valve controlling rod 4 causes the pivot movement of the annular portion 6 of valve controlling rod 4 around the rotation of the central axis of connecting pin 10, as shown in figure 12.On the one hand, this displacement of annular portion 6 (to the right-hand side in Figure 12) causes the disengaging of stop mechanism, this is that the part as annular portion 6 moves because of stop track 16, the biasing force Er Cong center depressed part 18 that makes stop plunger 14 overcome stopper spring departs from, make stop plunger 14 along the smooth lateral region of stop track, move (more precisely, stop track 16 moves with respect to rotary plunger 14) now.On the other hand, the displacement of annular portion 6 causes the displacement of the plunger of pilot valve 22, and the plunger that makes to be associated is pushed into one of them pilot valve and is opened, and servocylinder 20 is triggered thus.

This causes the situation shown in Figure 13, and wherein, the motion of servocylinder 24 is to right-hand side rotating valve controlling rod 4 and gearshift actuating rod 2, to realize gear shift operation.More precisely, piston rod 24 acts in actuating rod 44, and actuating rod 44 is couple to again valve controlling rod 4 (seeing Fig. 7) and is couple to gearshift actuating rod 2.The in the situation that of Figure 13, the motion of the gearshift campaign of driving mechanism and corresponding shifting shaft completes, but valve controlling rod 4 also turns back to it completely, does not locate between two parties.Due to the spring force of pilot valve 22 and due to the spring force of stop mechanism, valve controlling rod 4 turns back to the center condition shown in Figure 14.In the final stage of this return movement of valve controlling rod 4, the stop plunger 14 of spherical formula turns back to the central concave portion 18 of stop track, and the biasing spring that is stopped mechanism supports.When stop plunger 14 arrives the central concave portion 18 of stop tracks, this causes the joint of stop mechanism, and causes perceptible feedback, this feedback from actuator shaft by inputting actuation element and being delivered to gear level by hawser or the bar being connected thereto.

As relatively can find out from Figure 11 and 14, gear shift operation causes the pivotal position of input actuation element 34 and the pivotal position of gearshift actuating rod 2, but two parts the relative position of each other are identical, make in two drive ranges, stop mechanism is in its middle position, and wherein rotary plunger is bonded in the single depressed part of stop track.

Claims (14)

1. a shifting system, comprising:

Gear-box, described gear-box has shifting shaft (1), and gearshift actuating rod (2) is connected to described shifting shaft;

Gear level away from described gear-box;

Gearshift order is delivered to the driving mechanism of described shifting shaft from described gear level, be included in hawser or bar that one of them end is connected with described gear level and is connected with link in another end, described link comprises at least two actuation elements, and described at least two actuation elements comprise: input actuation element (4; 34), this input actuation element moves and moves in response to the gear level of described hawser or bar transmission; And gearshift actuating rod, wherein, at described input actuation element (4; 34) and between described gearshift actuating rod (2), have the connection with play, this allows the displacement in the relative positioning of described input actuation element and gearshift actuating rod;

The servomechanism of shifting shaft (20) described in auxiliary rotary, described servomechanism (20) is connected to described shifting shaft;

In response to described input actuation element (4; 34) the described input actuation element (4 of arranging; 34) relative positioning between the position of position and described gearshift actuating rod (2) and control the servovalve structure of described servomechanism;

The stop mechanism of the discernable feedback of gear shift operation is provided to described gear level, and described stop mechanism comprises stop plunger (14) and the stop track (16) of spring-biased,

It is characterized in that, described stop mechanism acts on input actuation element (4; 34) or be connected to this input actuation element and follow the parts of the motion of described input actuation element; And gearshift actuating rod (2) or be connected to described gearshift actuating rod and follow between the parts of rotational motion of gearshift actuating rod, the central concave portion (18) that makes described stop plunger (14) arrive described stop track (16) represent shifting shaft (1) arrived as described in input actuation element (4; 34) its neutral of arranging or enter gear and put.

2. shifting system as claimed in claim 1, it is characterized in that, comprise described stop mechanism and until be connected to the parts of described driving mechanism of the remainder of described shifting shaft and be arranged on movably in the casing (28) being connected on gear case body, make the location of described parts can adapt to the rotation location of described shifting shaft, keep described stop mechanism heart position therein, and stop plunger (14) is arranged in the central concave portion of stop track (16) simultaneously.

3. shifting system as claimed in claim 1, it is characterized in that, when described stop plunger is positioned at the central concave portion (16) of described stop track (18), for a plurality of positions of described input bar (4) and described gearshift actuating rod (2), the unactivated state of described servovalve structure is identical.

4. shifting system as claimed in claim 1, is characterized in that, described stop track (16) comprise by the lateral region on both sides around single central concave portion (18), the curvature of described lateral region is lower than the curvature of described central concave portion.

5. shifting system as claimed in claim 4, it is characterized in that, the central concave portion (18) of described stop track (16) has that tip tip complementation, described stop plunger with stop plunger (14) is contained in described central concave portion (18) and the shape that there is no play.

6. shifting system as claimed in claim 4, it is characterized in that, the stop plunger (14) that the lateral region of described stop track (16) has this spring-biased when described stop plunger (14) moves along the lateral region of described stop track (16) does not move along overcoming spring-biased direction, or moves than curvature little when leaving or entering the central concave portion of stop track along overcoming spring-biased direction.

7. shifting system as claimed in claim 4, it is characterized in that, described driving mechanism, described stop mechanism and described servovalve structure be arranged to when described stop plunger (14) leaves the central concave portion (18) of described stop track (16) described in valve in servovalve structure start to open, and when described stop plunger is mobile along one in the lateral region of described stop track (16), described valve arrives full open position.

8. shifting system as claimed in claim 4, is characterized in that, the motion that described stop mechanism is arranged to described servovalve structure is transformed into stop plunger with respect to the corresponding relative movement of stop track with the velocity ratio in the scope between 1.25 and 2.

9. as shifting system in any one of the preceding claims wherein, it is characterized in that, described servomechanism comprises that valve controlling rod (4) is as a part for driving mechanism, and two relative servovalves (22), wherein, described valve controlling rod has annular portion (6), and this annular portion has opening, axle (1; 36) to allow described annular portion to be contained in this opening with respect to the play of described axial displacement; Wherein, described valve actuating rod (4) is rotatably connected to gearshift actuating rod (2) or is connected with described gearshift actuating rod and follows on the parts of rotational motion of gearshift actuating rod, or is connected to input actuation element or is connected with described input actuation element and follows on the parts of the motion of inputting actuation element; Wherein, this connection defines and is parallel to described axle (1; 36) longitudinal axis but with the spin axis of this longitudinal axis skew, make the rotation of the valve controlling rod (4) that driving mechanism causes cause the displacement of its annular portion (6); Wherein two relative servovalves (22) with the plunger of spring-biased the apparent surface's part against the annular portion (6) of described valve controlling rod (4), make to cause due to the displacement of its annular portion (6) due to the rotational motion of valve controlling rod displacement plunger, that trigger servomechanism (20) of servovalve (22).

10. shifting system as claimed in claim 9, it is characterized in that, described input actuation element is valve controlling rod (4), in driving mechanism can by power from gear level be delivered to valve controlling rod (4) with rotate it parts, with respect to gearshift actuating rod (2) or be connected to gearshift actuating rod and follow the rotational motion of gearshift actuating rod parts, apart from a distance of its spin axis, be connected to this valve controlling rod (4).

11. shifting systems as claimed in claim 10, it is characterized in that, described valve controlling rod (4) is rotatably connected to described gearshift actuating rod (2) in a distance apart from its annular portion (6), makes the rotation of the described valve controlling rod (4) that described driving mechanism causes cause displacement its annular portion (6), trigger servomechanism through servovalve (22).

12. shifting systems as claimed in claim 9, it is characterized in that, described input actuation element (34) is the input actuating rod that is connected to actuator shaft (36), described actuator shaft (36) is rotatable around its longitudinal axis, described input actuating rod arranges perpendicular to described shifting shaft (2), be: another activates transmission arm (35) and is connected to actuator shaft (36), wherein, this actuator shaft (36) is by the axle of the opening extension of the annular portion (6) of valve controlling rod (4), and be: valve controlling rod (4) is rotatably connected to described actuating in the longitudinal axis a distance apart from described actuator shaft (36) and transmits arm (35), and be: the end that valve controlling rod (4) is relative with described annular portion (6) is couple to described gearshift actuating rod (2), make described valve controlling rod (4) follow the motion of described gearshift actuating rod (2).

13. shifting systems as claimed in claim 12, is characterized in that, described stop mechanism acts between described valve controlling rod (4) and described actuator shaft (36).

14. shifting systems as described in claim 12 or 13, it is characterized in that, the spin axis being rotatably connected of described valve control arm (4) and described actuating transmission arm (35) is parallel to the spin axis of described actuator shaft (36) but is offset with the spin axis of described actuator shaft.