CN102748429B - Planetary gear train auxiliary drive mechanism and engineering machinery vehicle - Google Patents

Planetary gear train auxiliary drive mechanism and engineering machinery vehicle Download PDF

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Publication number
CN102748429B
CN102748429B CN201210214291.5A CN201210214291A CN102748429B CN 102748429 B CN102748429 B CN 102748429B CN 201210214291 A CN201210214291 A CN 201210214291A CN 102748429 B CN102748429 B CN 102748429B
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auxiliary drive
planetary gear
gear train
drive mechanism
ring gear
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CN102748429A (en
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严欣贤
安术军
安迎迎
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Sany Heavy Industry Co Ltd
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Sany Heavy Industry Co Ltd
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Abstract

The invention provides a kind of planetary gear train auxiliary drive mechanism and engineering machinery vehicle.Planetary gear train auxiliary drive mechanism provided by the invention comprises: input shaft; Output shaft; Planetary gear train, comprising: sun gear, ring gear, planet carrier and planet wheel; Sun gear and input shaft coaxial linkage; Ring gear is installed in rotation on input shaft; Planet wheel is arranged on planet carrier, and respectively with ring gear and sun gear engagement fit; Planet carrier is connected and coaxial linkage with output shaft; Braking device, is provided with moveable brake component; Brake component has the first working position contacting with ring gear and coordinate and rotate to limit ring gear circumference, and departs from ring gear with the second working position making ring gear rotate.Adopt technological scheme of the present invention, utilize planetary gear train compact structure, take up room little and the feature of big speed ratio can be provided, make the design requirement of this auxiliary drive mechanism especially equipment of commensurate structure compact type.

Description

Planetary gear train auxiliary drive mechanism and engineering machinery vehicle
Technical field
The present invention relates to engineering machinery vehicle field, more specifically, relate to a kind of planetary gear train auxiliary drive mechanism and engineering machinery vehicle.
Background technique
Auxiliary drive mechanism is generally applied in engineering machinery vehicle.Auxiliary drive mechanism has input shaft and output shaft, the input shaft of auxiliary drive mechanism is connected with the output shaft of auxiliary power source, the output shaft of auxiliary drive mechanism is connected with the input shaft of auxiliary drive bridge (distinguishing with normal drive-type ransaxle), auxiliary power source, auxiliary drive mechanism match with auxiliary drive bridge for providing auxiliary drive moment to engineering machinery vehicle, reached the effect of slowing down and increasing and turning round by auxiliary drive mechanism, improve the rideability of engineering machinery vehicle.
Such as engineering machinery vehicle, when good road surface travels and the gradient is less, does not need to provide extra auxiliary drive moment, just can cut off the transmission of power between the input shaft of auxiliary driving structure and output shaft; When engineering machinery vehicle travels under severe road conditions and the gradient is larger, then connect the transmission of power between the input shaft of auxiliary drive mechanism and output shaft, thus increase the driving moment of engineering machinery vehicle, just can improve the climbable gradient of engineering machinery vehicle.
Current auxiliary drive mechanism generally adopts fixed shaft gear train gear train, but fixed shaft gear train gear train exists the shortcoming large, structure is not compact that takes up room, can not the designing requirement of commensurate structure compact type engineering machinery vehicle.
Summary of the invention
The present invention is intended to propose a kind of planetary gear train auxiliary drive mechanism, to solve take up room large, the structure not compact shortcoming of auxiliary drive mechanism because adopting fixed shaft gear train to exist of prior art.The invention allows for a kind of engineering machinery vehicle.
An aspect, the invention provides a kind of planetary gear train auxiliary drive mechanism, comprising: input shaft; Output shaft; Planetary gear train, comprising: sun gear, ring gear, planet carrier and planet wheel; Sun gear and input shaft coaxial linkage; Ring gear is installed in rotation on input shaft; Planet wheel is arranged on planet carrier, and respectively with ring gear and sun gear engagement fit; Planet carrier is connected and coaxial linkage with output shaft; Braking device, is provided with moveable brake component; Brake component has the first working position contacting with ring gear and coordinate and rotate to limit ring gear circumference, and departs from ring gear with the second working position making ring gear rotate.
Further, brake component is platen, arranges and can moving axially along input shaft perpendicular to input shaft; Platen is provided with the first end face teeth portion towards the side of ring gear; Ring gear has the side end face corresponding with platen, side end face is provided with for the second end face teeth portion with the first end face teeth portion male-female engagement.
Further, the first end face teeth portion comprises multiple the first fan-shaped double wedge be uniformly distributed circumferentially, and the second end face teeth portion comprises multiple the second fan-shaped double wedge be uniformly distributed circumferentially; When platen is in the first working position, the first fan-shaped double wedge is disposed adjacent in the circumferential with the second fan-shaped double wedge.
Further, at least part of second fan-shaped double wedge is formed by the friction plate be arranged on side end face.
Further, this planetary gear train auxiliary drive mechanism also comprises housing, and input shaft is arranged on housing by the second spring bearing, and output shaft is arranged on housing by the 3rd spring bearing, and planetary gear train and platen are arranged in housing.
Further, piston cavity and the passage for making piston cavity communicate with pressure source is formed with in enclosure interior; Braking device also comprises: piston, is arranged in piston cavity, and piston is pneumatic piston or hydrodynamic piston, and platen is by piston actuated; Elastic reset part, is arranged between housing and platen, remains on the second working position for making platen.
Further, platen comprises annular disk body and is positioned at the first fan-shaped double wedge of annular disk body side, and the peripheral edge of the first fan-shaped double wedge is positioned at the outside of the peripheral edge of annular disk body.
Further, piston ringwise, is contained in ringwise piston cavity; The guiding groove that double wedge fan-shaped with first coordinates is formed in housing; Elastic reset part is spring, and spring is parallel to input shaft and arranges, and the first end of spring is arranged in the mounting hole that the first fan-shaped double wedge is arranged, and the second end is spacing by the bottom land bottom surface of guiding groove.
Another aspect, present invention also offers a kind of engineering machinery vehicle, is provided with above-mentioned planetary gear train auxiliary drive mechanism, and wherein, planetary gear train is deceleration wheels.
Further, this project motor vehicles and machines comprise: engine in situ; The main ransaxle driven by engine in situ; Upper car engine; Oil hydraulic pump; Oil hydraulic motor, planetary gear train auxiliary drive mechanism and auxiliary drive bridge; Wherein, oil hydraulic pump from engine torque extraction of getting on the bus, and for providing pressure oil to oil hydraulic motor; The input shaft of planetary gear train auxiliary drive mechanism drives with the output shaft of oil hydraulic motor and is connected, and the output shaft of planetary gear train auxiliary drive mechanism drives with the input shaft of auxiliary drive bridge and is connected.
Planetary gear train auxiliary drive mechanism provided by the invention, utilize planetary gear train compact structure, take up room little and the feature of big speed ratio can be provided, realize the locked of ring gear by the position controlling brake component and unlock, and then realize the break-make of the transmission of power between the input shaft of auxiliary drive mechanism and output shaft, make the design requirement of this auxiliary drive mechanism especially equipment (such as engineering machinery vehicle) of commensurate structure compact type.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the sectional structure of the preferred embodiment of planetary gear train auxiliary drive mechanism provided by the invention;
Fig. 2 diagrammatically illustrates the structure of brake component in the preferred embodiment of the present invention;
Fig. 3 diagrammatically illustrates the structure of the second fan-shaped double wedge in the preferred embodiment of the present invention;
Fig. 4 diagrammatically illustrates the decomposition texture of preferred embodiment of the present invention middle shell, ring gear and platen;
Fig. 5 diagrammatically illustrates in the preferred embodiment of the present invention shell construction being provided with piston cavity;
Fig. 6 diagrammatically illustrates the main TV structure of ring gear in the preferred embodiment of the present invention, platen, and wherein, platen is in the first working position;
Fig. 7 diagrammatically illustrates the main TV structure of ring gear in the preferred embodiment of the present invention, platen, and wherein, platen is in the second working position; And,
Fig. 8 diagrammatically illustrates the schematic diagram of engineering machinery vehicle provided by the invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
See Fig. 1, show the preferred embodiment of a kind of planetary gear train auxiliary drive mechanism provided by the invention.As shown in the figure, this planetary gear train auxiliary drive mechanism at least comprises: input shaft 2, output shaft 4, planetary gear train 3 and braking device.
Easy understand, input shaft 2 and output shaft 4 usually by bearings on fixed support, input shaft 2 is such as connected with the output shaft of auxiliary power source, and output shaft 4 is such as connected with the input shaft of auxiliary drive bridge.In the present embodiment, preferably, this planetary gear train auxiliary drive mechanism also comprises housing 1, and input shaft 2 is arranged on housing 1 by the second spring bearing 52, and output shaft 4 is arranged on housing 1 by the 3rd spring bearing 53.
Planetary gear train 3 is arranged in housing 1.Planetary gear train 3 comprises: sun gear 31, ring gear 32, planet carrier 33 and planet wheel 34.Sun gear 31 and input shaft 2 coaxial linkage, such as, sun gear 31 is connected by key with input shaft 2, or sun gear 31 is one-body molded with input shaft 2 as shown in Figure 1.Ring gear 32 is installed in rotation on input shaft 2, and ring gear 32 is arranged on input shaft 2 by the first spring bearing 51 in the present embodiment, is rolling matching relationship between ring gear 32 and input shaft 2.Planet wheel 34 is arranged on planet carrier 33, and respectively with ring gear 32 and sun gear 31 engagement fit.Planet carrier 33 is connected and coaxial linkage with output shaft 4, and as can be seen from Fig. 1, in the present embodiment, planet carrier 33 is one-body molded with output shaft 4.Preferably, as can be seen from Fig. 1, the left end of input shaft 2 is connected by the 4th spring bearing 54 with the right-hand member of output shaft 4, makes the structure of input shaft 2 and output shaft 4 more reliable and more stable.
Braking device is provided with moveable brake component 7, and the move mode of this brake component 7 is such as moving axially or be moving radially along input shaft 2 along input shaft 2.Brake component 7 has the first working position and the second working position.When brake component 7 is in the first working position, brake component 7 contacts with ring gear 32 and coordinates, and limit the rotation of ring gear 32 circumference, ring gear 32 is made to be in the locking state that can not rotate, now planet wheel 34 drives planet carrier 33 to rotate while revolving round the sun around sun gear 31, and by output shaft 4 outputting power, make output shaft 4 according to the velocity ratio output speed set and moment of torsion.When brake component 7 is in the first working position, power transmission line corresponding to this planetary gear train auxiliary drive mechanism is: input shaft 2-sun gear 31-planet wheel 34-planet carrier 33-output shaft 4.When brake component 7 is in the second working position, brake component 7 departs from ring gear 32, and ring gear 32 can be rotated, the now unpowered output of output shaft 4.
By learning above, planetary gear train auxiliary drive mechanism provided by the invention, utilize planetary gear train compact structure, take up room little and the feature of big speed ratio can be provided, realize the locked of ring gear 32 by the position controlling brake component 7 and unlock, and then realize the break-make of the transmission of power between the input shaft 2 of auxiliary drive mechanism and output shaft 4, make the design requirement of this auxiliary drive mechanism especially equipment (such as engineering machinery vehicle) of commensurate structure compact type.
In the present embodiment, in conjunction with reference to figure 2, brake component 7 is preferably platen 7, and platen 7 to be arranged in housing 1 and to arrange perpendicular to input shaft 2, and the move mode of platen 7 is moving axially along input shaft 2.At platen 7, the side of ring gear 32 is provided with the first end face teeth portion.Combine with reference to figure 3, ring gear 32 has the side end face 320 corresponding with platen 7 again, side end face 320 is provided with for the second end face teeth portion with the first end face teeth portion male-female engagement.Obviously, by controlling the axial position of platen 7, (corresponding to the first working position of platen 7, see Fig. 6) when making the first end face teeth portion and the second end face teeth portion male-female engagement, just can the circumference rotation of backstop ring gear 32, make output shaft 4 can outputting power; Be separated when making the first end face teeth portion and the second end face teeth portion and do not rotate when interfering (corresponding to the second working position of platen 7, seeing Fig. 7), ring gear 32 unlocks and can rotate around input shaft 2 axis, now the not outside outputting power of output shaft 4.
Preferably, platen 7 has annular disk body 70, and the first end face teeth portion of platen 7 comprises multiple the first fan-shaped double wedge 71 being arranged on annular disk body 70 side, and multiple fan-shaped double wedge 71 is uniformly distributed circumferentially.Second end face teeth portion comprises multiple the second fan-shaped double wedge 321 be uniformly distributed circumferentially on side end face 320.When platen 7 is in the first working position, first fan-shaped double wedge 71 is disposed adjacent in the circumferential with the second fan-shaped double wedge 321, namely, first fan-shaped double wedge 71 is identical with the number of the second fan-shaped double wedge 321, a first fan-shaped double wedge 71 snaps between two adjacent the second fan-shaped double wedges 321, in like manner, be equivalent to a second fan-shaped double wedge 321 and snap between two adjacent the first fan-shaped double wedges 71, thus realize reliably locked to ring gear 32.Adopt above-mentioned fan-shaped double wedge structure, make the first end face teeth portion and the easy manufacturing of the second end face teeth portion.Preferably, the peripheral edge of the first fan-shaped double wedge 71 is positioned at the outside of the peripheral edge of annular disk body 70, thus alleviates the weight of platen 7.
Preferably, at least part of second fan-shaped double wedge in multiple second fan-shaped double wedge 321 is formed by the friction plate be arranged on side end face 320, friction plate can be made up of the composite material that friction factor is larger, and the friction plate be made up of composite material is such as arranged on side end face 320 by riveted joint or bonding mode.Promoting platen 7 by its second working position in the first working position moving process like this, if now ring gear 32 is in rotary state, the end of the second fan-shaped double wedge 321 is the ends contact of fan-shaped double wedge 71 with first first, under the effect of friction plate, ring gear 32 can stop operating fast, first fan-shaped double wedge 71 is snapped in the gap of the second fan-shaped double wedge 321 smoothly, and locked ring gear 32.
The mode driving platen 7 to axially move can have a variety of, preferably, in the present embodiment, is formed with piston cavity 10 and the passage 11 for making piston cavity 10 communicate with pressure source in housing 1 inside.Braking device preferably also comprises piston 6 and elastic reset part 8.Wherein, piston 6 is arranged in piston cavity 10, and platen 7 and piston 6 are rigidly connected, and moving axially of platen 7 is driven by piston 6, and passage 11 is connected with pressure source by pipeline.Pressure source also can be able to be pressure oil-source for pressurized gas, and correspondingly, piston 6 is pneumatic piston or hydrodynamic piston.Passage 11 with the pipeline of pressure-source communication arrange control valve, pressurized gas or pressure oil can be made to enter in piston cavity 10 by maneuvering and control valve, and then promote piston 6 and drive platen 7 to do axially to stretch out movement, make the second end face teeth portion male-female engagement on the first end face teeth portion of platen 7 and ring gear 32, rotate with the circumference limiting ring gear 32, make output shaft 4 outputting power.Elastic reset part 8 is arranged between housing 1 and platen 7, remains on the second working position for making platen 7.Particularly, when not needing output shaft 4 outputting power, remove pressure source, under the effect of elastic reset part 8, pressure disk 7 is done axial retraction and is moved, return back to the second working position by its first working position, namely cut off the transmission of power passage between input shaft 2 and output shaft 4, output shaft 4 is outputting power no longer externally.
Preferably, can find out in conjunction with reference to figure 1, Fig. 4, Fig. 5 and Fig. 6, in this enforcement, piston 6 ringwise, is contained in ringwise piston cavity 10.Elastic reset part 8 is spring, is parallel to input shaft 2 and arranges.In housing 1, be formed with the guiding groove 12 that double wedge 71 fan-shaped with first coordinates, composition graphs 1 and Fig. 4 can find out, guiding groove 12 extends vertically, the number of guiding groove 12 and the number one_to_one corresponding by outwardly the first fan-shaped double wedge 71 of annular disk body 70.By arranging this guiding groove 12, when platen 7 is in its first working position, the sidewall of guiding groove 12 can drive piston 6 to rotate by the fan-shaped double wedge 71 of backstop first, makes platen 7 only to axially move.It can also be seen that by Fig. 1 and Fig. 2, the first fan-shaped double wedge 71 is provided with mounting hole 710, and the first end of spring 8 is arranged in mounting hole 710, and the second end is spacing by the bottom land bottom surface of guiding groove 12.As can be seen from Fig. 2, in the present embodiment, each first fan-shaped double wedge all arranges mounting hole 710, the number of spring 8 and the number one_to_one corresponding of mounting hole 710.Obviously, in actual applications, mounting hole 710 also can only be offered on the fan-shaped double wedge of part first.
Easy understand, in actual applications, by rationally arranging the shape of piston 6, piston 6 can be relied on to rotate with the circumference of just energy limited piston 6 that coordinates of piston cavity 10, and then the circumference of restriction platen 7 is rotated, and does not now then need to arrange guiding groove 12.
By learning above, the braking device in the present invention had both served the effect of braking, also serve the effect of power interruption and transmission, and braking device had simple, the maneuverable advantage of structure simultaneously.
It should be noted that, although only exemplified out the embodiment making brake component 7 move axially in a preferred embodiment of the invention, but in actual applications, brake component 7 can also be such as the piston rod that can radially stretch, make not produce the rotation of ring gear 32 when ring gear 32 does not rotate, piston rod is retracted to interfere as long as control piston bar snaps in when stretching out in ring gear 32, goal of the invention of the present invention can be realized equally.
Present invention also offers a kind of engineering machinery vehicle, be provided with above-mentioned planetary gear train auxiliary drive mechanism, wherein, the planetary gear train 3 of planetary gear train auxiliary drive mechanism is deceleration wheels, the function turned round is increased for realizing auxiliary drive deceleration to engineering machinery vehicle, namely on the moment basis that original ransaxle provides, driving moment is increased, to improve drive performance and the climbable gradient of engineering machinery vehicle.
Preferably, see Fig. 8, this project motor vehicles and machines comprise: engine in situ 91, main ransaxle 92, upper car engine 93, oil hydraulic pump 95, oil hydraulic motor 96, planetary gear train auxiliary drive mechanism 97 and auxiliary drive bridge 98.
Main ransaxle 92 is driven by engine in situ 91.Oil hydraulic pump 95 such as passes through power take-off 94 from the power taking of upper car engine 93, and for providing pressure oil to oil hydraulic motor 96.The planetary gear train auxiliary drive mechanism provided in planetary gear train auxiliary drive mechanism and the present invention, the input shaft 2 of planetary gear train auxiliary drive mechanism 97 drives with the output shaft of oil hydraulic motor 96 and is connected (such as passing through spline joint), and the output shaft 4 of planetary gear train auxiliary drive mechanism 97 drives with the input shaft of auxiliary drive bridge 98 and is connected (such as passing through spline joint).
In prior art, engine in situ 91 is connected for normal drive-type with main ransaxle 92 in vehicle travel process, for the transition of vehicle provides power; Upper car engine 93 is out-of-operation in vehicle travel process.And adopt engineering machinery vehicle of the present invention, in vehicle travel process, the power utilization of upper car engine 93 is got up, select whether to utilize upper car engine 93 to drive auxiliary drive bridge 98 by planetary gear train auxiliary drive mechanism 97 according to the needs of road conditions in traveling, thus improve the drive performance of engineering machinery vehicle.Wherein planetary gear train auxiliary drive mechanism 97 serves the effect of slowing down and increasing and turning round, can under the prerequisite of the base ratio of the main ransaxle 92 not affecting engine in situ rated power and driven by engine in situ 91, reach and increase vehicle bridge moment of torsion and the effect improving vehicle climbable gradient, and little on complete vehicle weight impact.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a planetary gear train auxiliary drive mechanism, is characterized in that, comprising:
Input shaft (2);
Output shaft (4);
Planetary gear train (3), comprising: sun gear (31), ring gear (32), planet carrier (33) and planet wheel (34); Described sun gear (31) and described input shaft (2) coaxial linkage; Described ring gear (32) is installed in rotation on described input shaft (2) by the first spring bearing (51); Described planet wheel (34) is arranged on described planet carrier (33), and respectively with described ring gear (32) and described sun gear (31) engagement fit; Described planet carrier (33) is connected and coaxial linkage with described output shaft (4);
Housing (1), described input shaft (2) is arranged on described housing (1) by the second spring bearing (52), and described output shaft (4) is arranged on described housing (1) by the 3rd spring bearing (53);
Braking device, is provided with moveable brake component (7); Described brake component (7) has the first working position contacting with described ring gear (32) and coordinate and rotate to limit described ring gear (32) circumference, and departs from the second working position that described ring gear (32) can rotate to make described ring gear (32);
Described brake component (7) is platen, arranges and can moving axially along described input shaft (2) perpendicular to described input shaft (2); Described platen is provided with the first end face teeth portion towards the side of described ring gear (32), and described planetary gear train (3) and described platen are arranged in described housing (1);
Described ring gear (32) has the side end face (320) corresponding with described platen, described side end face (320) is provided with for the second end face teeth portion with described first end face teeth portion male-female engagement.
2. planetary gear train auxiliary drive mechanism according to claim 1, is characterized in that,
Described first end face teeth portion comprises multiple the first fan-shaped double wedge (71) be uniformly distributed circumferentially, and described second end face teeth portion comprises multiple the second fan-shaped double wedge (321) be uniformly distributed circumferentially;
When described platen is in described first working position, described first fan-shaped double wedge (71) is disposed adjacent in the circumferential with described second fan-shaped double wedge (321).
3. planetary gear train auxiliary drive mechanism according to claim 2, is characterized in that, described second fan-shaped double wedge (321) is formed by the friction plate be arranged on described side end face (320) at least partly.
4. planetary gear train auxiliary drive mechanism according to claim 1, is characterized in that,
Piston cavity (10) and the passage (11) for making described piston cavity (10) communicate with pressure source is formed in described housing (1) inside;
Described braking device also comprises: piston (6), is arranged in described piston cavity (10), and described piston (6) is pneumatic piston or hydrodynamic piston, and described platen is driven by described piston (6); Elastic reset part (8), being arranged between described housing (1) and described platen, remaining on the second working position for making described platen.
5. planetary gear train auxiliary drive mechanism according to claim 4, is characterized in that,
Described platen comprises annular disk body (70) and is positioned at the first fan-shaped double wedge (71) of described annular disk body (70) side, and the peripheral edge of described first fan-shaped double wedge (71) is positioned at the outside of the peripheral edge of described annular disk body (70).
6. planetary gear train auxiliary drive mechanism according to claim 5, is characterized in that,
Described piston (6) ringwise, is contained in ringwise described piston cavity (10);
The guiding groove (12) coordinated with described first fan-shaped double wedge (71) is formed in described housing (1);
Described elastic reset part (8) is spring, described spring is parallel to described input shaft (2) and arranges, and the first end of described spring is arranged in the upper mounting hole (710) arranged of described first fan-shaped double wedge (71), the second end is spacing by the bottom land bottom surface of described guiding groove (12).
7. an engineering machinery vehicle, is characterized in that, is provided with the planetary gear train auxiliary drive mechanism according to any one of claim 1 to 6, and wherein, described planetary gear train (3) is deceleration wheels.
8. engineering machinery vehicle according to claim 7, is characterized in that, comprising:
Engine in situ (91); The main ransaxle (92) driven by described engine in situ (91);
Upper car engine (93); Oil hydraulic pump (95); Oil hydraulic motor (96), described planetary gear train auxiliary drive mechanism (97) and auxiliary drive bridge (98);
Wherein, described oil hydraulic pump (95) from the power taking of described upper car engine (93), and for providing pressure oil to described oil hydraulic motor (96); The input shaft (2) of described planetary gear train auxiliary drive mechanism (97) drives with the output shaft of described oil hydraulic motor (96) and is connected, and the output shaft (4) of described planetary gear train auxiliary drive mechanism (97) drives with the input shaft of described auxiliary drive bridge (98) and is connected.
CN201210214291.5A 2012-06-27 2012-06-27 Planetary gear train auxiliary drive mechanism and engineering machinery vehicle Active CN102748429B (en)

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Publication number Priority date Publication date Assignee Title
CN102927220B (en) * 2012-11-09 2016-08-03 重庆隆旺机电有限责任公司 The imported electric vehicle transmission of entirety of preposition planet circular system
CN103010016B (en) * 2012-12-07 2016-08-17 重庆隆旺机电有限责任公司 Motor rear axle drive assembly

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