CN102729814A - Engineering machinery vehicle - Google Patents
Engineering machinery vehicle Download PDFInfo
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- CN102729814A CN102729814A CN2012102137349A CN201210213734A CN102729814A CN 102729814 A CN102729814 A CN 102729814A CN 2012102137349 A CN2012102137349 A CN 2012102137349A CN 201210213734 A CN201210213734 A CN 201210213734A CN 102729814 A CN102729814 A CN 102729814A
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Abstract
The invention provides an engineering machinery vehicle. The engineering machinery vehicle comprises a chassis engine, a first drive axle, an upper vehicle engine, a hydraulic pump, a hydraulic motor, an auxiliary reducing driving device and a second drive axle, wherein the first drive axle is driven by the chassis engine; the hydraulic pump gains power from the upper vehicle engine and is used for providing pressure oil for the hydraulic motor; the auxiliary reducing driving device comprises a power input shaft and a power output shaft; the power output shaft rotates at a reduction ratio speed or a zero speed; the power input shaft is in drive connection with the hydraulic motor; and the power output shaft is in drive connection with an input shaft of the second drive axle. By adoption of the technical scheme, the power of the upper vehicle engine is fully utilized, and the driving performance and the climbing gradient of the engineering machinery vehicle are improved.
Description
Technical field
The present invention relates to a kind of engineering machinery vehicle.
Background technology
Along with the continuous increase of expanding economy and domestic capital construction project, engineering machinery vehicle is developed as the construction necessary tool rapidly.The construction environment of common engineering motor vehicles and machines is comparatively abominable with the road conditions of going, and especially when at sloping road or traveling on mountainous region, needs bigger drive torque to improve the hill climbing ability of engineering machinery vehicle.
In the prior art, the drive axle in the vehicle bridge of engineering machinery vehicle is driven by engine in situ, and engine in situ is that going of vehicle provides power; The last car engine of engineering machinery vehicle is that mobile unit (for example being the telescopic boom of car hosit) provides power, to satisfy the job requirements of engineering machinery vehicle.In order to increase the climbable gradient of drive torque, increase engineering machinery vehicle, the following mode of main at present employing: a kind of is the rating horsepower that increases engine in situ, and its shortcoming is the increase oil consumption, and the rating horsepower of driving engine has requirement; Another kind is the base ratio that increases the drive axle that is driven by engine in situ in allowed limits, and shortcoming is the dynamic property and the fuel efficiency that may influence automobile.
Therefore, needing badly provides a kind of engine in situ rating horsepower that neither influences, and does not influence the base ratio of the drive axle that is driven by engine in situ again, but has improved the driveability of car load and the engineering machinery vehicle of climbable gradient simultaneously again.
Summary of the invention
The present invention aims to provide a kind of engine in situ rating horsepower that neither influences, and does not influence the base ratio of the drive axle that is driven by engine in situ again, can improve the driveability of car load and the engineering machinery vehicle of climbable gradient simultaneously.
The invention provides a kind of engineering machinery vehicle, comprising: engine in situ; First drive axle by the engine in situ driving; Last car engine; This project motor vehicles and machines also comprise: Hydraulic Pump, HM Hydraulic Motor, assisted deceleration actuating device and second drive axle; Wherein, Hydraulic Pump is from the engine torque extraction of getting on the bus, and is used for to HM Hydraulic Motor pressure oil being provided; The assisted deceleration actuating device has power input shaft and power take-off shaft; Power take-off shaft is with the speed or the zero-speed rotation of reduction ratio; Wherein power input shaft drives with hydraulic motor output shaft and is connected, and power take-off shaft drives with the input shaft of second drive axle and is connected.
Further, the assisted deceleration actuating device also comprises: the reducing gear box body, and power input shaft is installed on the reducing gear box body through first backup bearing, and power take-off shaft is installed on the reducing gear box body through second backup bearing; The dead axle reduction gear train is arranged in the reducing gear box body; The dead axle reduction gear train comprises at least: be arranged on first gear on the power input shaft and be arranged on second gear on the power take-off shaft, power take-off shaft is by second gear drive.
Further, be provided with the 3rd backup bearing between the power take-off shaft and second gear, and power take-off shaft is provided with the first external spline teeth section; The assisted deceleration actuating device also comprises: can axially movable declutch shift shaft; Be installed in the shift fork on the declutch shift shaft; Sliding hub is set on the power take-off shaft, and has the first inner spline gear section that cooperates with the first external spline teeth section; Sliding hub can drive moving axially along power take-off shaft by shift fork; Also be provided with the first tooth portion on the sliding hub, second gear be provided with can with the second tooth portion of the first tooth portion engagement fit.
Further, the first tooth portion is an inner spline gear, and the second tooth portion is an external spline teeth; Or first tooth portion be the first end face tooth, the second tooth portion is the second end face tooth.
Further; The dead axle reduction gear train is a two-stage dead axle reduction gear train, also comprises: the tween drive shaft that laterally arranges with power input shaft, and be arranged on the 3rd gear and the 4th gear on the tween drive shaft; Wherein the 3rd gear cooperates with first gear mesh, and the 4th gear cooperates with second gear mesh.
Further, the axis of power input shaft and the axis of power take-off shaft coincide, and the two corresponding end of power input shaft and power take-off shaft is connected through the 4th backup bearing.
Further, the 3rd backup bearing is a needle bearing.
Further, the dead axle reduction gear train is a single-stage dead axle reduction gear train, and power input shaft and power take-off shaft laterally arrange, and first gear cooperates with second gear mesh.
Further, power input shaft is provided with the second inner spline gear section, and hydraulic motor output shaft is provided with the second external spline teeth section, and the second inner spline gear section cooperates with the second external spline teeth section.
Further, power take-off shaft is connected with the input shaft of second drive axle through terminal pad; Or power take-off shaft is provided with the 3rd inner spline gear section, and the input shaft of second drive axle is provided with the 3rd external spline teeth section, and the 3rd inner spline gear Duan Yudi three external spline teeth sections cooperate.
According to technical scheme of the present invention; Through increasing Hydraulic Pump, HM Hydraulic Motor, assisted deceleration actuating device and second drive axle; The power of last car engine can be fully utilized in the vehicle ' process, and being equivalent to provides a cover auxiliary power unit for going of engineering machinery vehicle.Like this; Can select whether to use this cover auxiliary power unit according to the needs of road conditions in the driving process of engineering machinery vehicle; Can not increase burden to engine in situ; And the assisted deceleration actuating device played to slow down and increased the effect of turning round, and can under the prerequisite of the base ratio of first drive axle that does not influence the engine in situ rating horsepower and driven by engine in situ, reach the effect that increases the vehicle bridge moment of torsion and improve the vehicle climbable gradient.And technical scheme of the present invention is implemented easily, and is simple in structure, on the basis of not wasting the vehicle power resource, can not produce too much influence to the gross weight of car load.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structure principle chart of the engineering machinery vehicle that provides of the present invention;
Fig. 2 has schematically shown the sectional structure of a kind of specific embodiment of the assisted deceleration actuating device among the present invention;
Fig. 3 has schematically shown the spatial structure of parts such as declutch shift shaft and shift fork, first gear, second gear, tween drive shaft, the 3rd gear and the 4th gear among Fig. 2;
Fig. 4 has schematically shown the decomposition texture of the part parts of assisted deceleration actuating device among the present invention;
Fig. 5 has schematically shown the main TV structure of parts such as shift fork, sliding hub, second gear among the present invention, and wherein, sliding hub only is set on the first external spline teeth section of power take-off shaft;
Fig. 6 has schematically shown the main TV structure of parts such as shift fork, sliding hub, second gear among the present invention, and wherein, sliding hub is set in the second tooth portion of the first external spline teeth section and second gear of power take-off shaft simultaneously; And,
Fig. 7 has schematically shown the sectional structure of the another kind of specific embodiment of the assisted deceleration actuating device among the present invention.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Referring to Fig. 1; Show the structure principle chart of a kind of engineering machinery vehicle provided by the invention, it comprises at least: engine in situ 11, first drive axle 21, go up car engine 12, Hydraulic Pump 3, HM Hydraulic Motor 4, assisted deceleration actuating device 5 and second drive axle 22.
Particularly, first drive axle 21 is driven by engine in situ 11, for vehicle ' provides power.Last car engine 12 mainly is that mobile unit provides power when the engineering machinery vehicle operation.Hydraulic Pump 3 for example passes through power takeoff 13 from last car engine 12 power takings, is used for to HM Hydraulic Motor 4 pressure oil being provided.Assisted deceleration actuating device 5 has power input shaft 51 and power take-off shaft 52; Power take-off shaft 52 is with the speed or the zero-speed rotation of reduction ratio; Wherein power input shaft 51 drives with the output shaft of HM Hydraulic Motor 4 and is connected, and power take-off shaft 52 drives with the input shaft of second drive axle 22 and is connected.Understand easily; Hydraulic Pump 3 is from the connection structure of the input shaft of drive mechanism, power take-off shaft 52 and second drive axle 22 between connection structure, power input shaft 51 and the power take-off shaft 52 of connection structure, hydraulic motor output shaft and the power input shaft 51 of the specific embodiment, Hydraulic Pump 3 and the HM Hydraulic Motor 4 of last car engine 12 power takings, and those of ordinary skill in the art can implement referring to relevant prior art.
In the prior art; 11 of engines in situ are used in the vehicle ' process; The vehicle bridge of vehicle comprises drive axle and non-powered axle (non-powered axle comprises steeraxle and support bridge), and engine in situ 11 is that normal drive-type is connected with drive axle, for the transition of vehicle provides power; 12 of last car engines use in the operation process of vehicle, and for the last vehicle device of vehicle provides running power, for example for car hosit, last car engine 12 is implemented lifting operation through the power driven hanging device is provided.That is, the last car engine 12 of engineering machinery vehicle does not use with engine in situ 11 simultaneously.
And adopt technical scheme of the present invention, being equivalent to provides a cover auxiliary power unit for going of engineering machinery vehicle, and the power of car engine 12 can be fully utilized in the vehicle ' process.Particularly; Can the part support bridge of engineering machinery vehicle be changed and be made as 22 uses of second drive axle; In the engineering truck driving process; Whether engine in situ 11 is connected for normal drive-type with first drive axle 21, select to utilize car engine 12 to drive second drive axle 22 according to the needs of road conditions in going, thereby improved the driveability of engineering machinery vehicle.In addition; Wherein assisted deceleration actuating device 5 has played to slow down and has increased the effect of turning round and (combine prior art to learn easily; When the reduction ratio of this assisted deceleration actuating device 5 is i, and power input shaft 51 is during with all non-vanishing speed of power take-off shaft 52, if the rotating speed of power input shaft 51 is r1; Then the rotating speed r2 of power take-off shaft 52 is less than r1; R2=(r1/i) then), can under the prerequisite of the base ratio of first drive axle 21 that does not influence the engine in situ rating horsepower and drive, reach the effect that increases the vehicle bridge moment of torsion and improve the vehicle climbable gradient by engine in situ 11.In addition, technical scheme of the present invention is implemented easily, and is simple in structure, on the basis of not wasting the vehicle power resource, can not produce too much influence to the gross weight of car load.
Referring to Fig. 2 to Fig. 6, preferably, show a kind of specific embodiment of assisted deceleration actuating device 5.This assisted deceleration actuating device 5 comprises: reducing gear box body 50, power input shaft 51, first backup bearing 501, power take-off shaft 52, second backup bearing 502, dead axle reduction gear train; In this embodiment, the dead axle reduction gear train is that example describes with two-stage dead axle reduction gear train.
By finding out among Fig. 2; Power input shaft 51 is installed on the reducing gear box body 50 through first backup bearing 501; Power take-off shaft 52 is installed on the reducing gear box body 50 through second backup bearing 502; The axis of the axis of power input shaft 51 and power take-off shaft 52 coincides or is parallel to each other, and first backup bearing 501 and second backup bearing 502 can all adopt tapered roller bearing.
Two-stage dead axle reduction gear train is arranged in the reducing gear box body 50; Comprise: the tween drive shaft 57 that is arranged on first gear 53 on the power input shaft 51, laterally arranges with power input shaft 51, be arranged on the 3rd gear 58 and the 4th gear 59 on the tween drive shaft 57, be arranged on second gear 54 on the power take-off shaft 52; Wherein the 3rd gear 58 and first gear, 53 engagement fit; The 4th gear 59 and second gear, 54 engagement fit; Power input shaft 51 and 53 interlocks of first gear, power take-off shaft 52 is driven by second gear 54, thereby realizes the dual-ratio reduction function.
Preferably, be provided with the 3rd backup bearing 503 between the power take-off shaft 52 and second gear 54, on power take-off shaft 52, also be provided with the first external spline teeth section 521.This assisted deceleration actuating device 5 also comprises declutch shift shaft 55, shift fork 551 and sliding hub 56 further.Declutch shift shaft 55 for example also can be axially moved by air operated control.Shift fork 551 is installed on the declutch shift shaft 55, moves with declutch shift shaft 55.Sliding hub 56 is set on the power take-off shaft 52, and has the first inner spline gear section 561 that cooperates with the first external spline teeth section 521, and promptly sliding hub 56 is connected for spline with power take-off shaft 52.Sliding hub 56 can drive moving axially along power take-off shaft 52 by shift fork 551.Understand easily, shift fork 551 can drive the 56 axially movable whiles of sliding hub and the circumferential rotation of sliding hub 56 do not produced restriction.Also be provided with on the sliding hub 56 the first tooth portion, 563, the second gears 54 be provided with can with the second tooth portion 541 of the first tooth portion, 563 engagement fit.Preferably, in this embodiment, the first tooth portion 563 is an inner spline gear, and the second tooth portion 541 is an external spline teeth, and by finding out the inner spline gear that the first tooth portion 563 and the first inner spline gear section 561 are formed in one among Fig. 2 and Fig. 4.Be equivalent to the structure that clutch action has been overlapped in parts formation one such as declutch shift shaft 55, shift fork 551, sliding hub 56, the first inner spline gear section 561 and the first external spline teeth section 521.Certainly, in a kind of unshowned embodiment, the first tooth portion can be the first end face tooth, and the second tooth portion can be the second end face tooth.
Like this; When needing power take-off shaft 52 with the speed outputting power of reduction ratio; Air operated control declutch shift shaft 55 promotes shift fork 551 makes the inner spline gear of sliding hub 56 be enclosed within simultaneously in the first external spline teeth section 521 and the second tooth portion 541 (referring to Fig. 6); Power promptly is delivered on the power take-off shaft 52 by second gear 54, thereby outputting power is given the input shaft of second drive axle 22.The power transmission line of this moment is: the input shaft of going up car engine 12-power takeoff 13-Hydraulic Pump 3-HM Hydraulic Motor 4-power input shaft 51-the first gear 53-the three gear 58-tween drive shaft 57-the four gear 59-the second gear 54-sliding hub 56-the first external spline teeth section 521-power take-off shaft 52-the second drive axle 22.
When declutch shift shaft 55 control shift forks 551 move axially the inner spline gear that makes sliding hub 56 and break away from the second tooth portion 541 (referring to Fig. 5), then second gear, 54 idle running, power take-off shaft 52 is a zero-speed, no power takeoff.The power transmission line of this moment is: go up car engine 12-power takeoff 13-Hydraulic Pump 3-HM Hydraulic Motor 4-power input shaft 51-the first gear 53-the three gear 58-tween drive shaft 57-the four gear 59-the second gear 54.Thereby provide a kind of under the situation of not cutting off the power transmission between car engine 12 to the power input shaft 51, also can control power take-off shaft 52 not to the structure of second drive axle, 22 outputting powers.
Preferably, the 3rd backup bearing 503 is a needle bearing, adopts needle bearing can make the structure of assisted deceleration actuating device 5 compact more.In addition, by finding out among Fig. 2, also be respectively arranged with thrust ball bearing 505 in the both sides of second gear 54.
Preferably, in this embodiment, the axis of the axis of power input shaft 51 and power take-off shaft 52 coincides, and power input shaft 51 is connected through the 4th backup bearing 504 with power take-off shaft 52 the two corresponding end.By finding out among Fig. 2; The right-hand member of power input shaft 51 gos deep in the left end endoporus of power take-off shaft 52; Connect through self-aligning roller bearing (being equivalent to the 4th backup bearing 504) between the two, improved the structural stability of power input shaft 51 and power take-off shaft 52.
Preferably; By it can also be seen that among Fig. 2, in this embodiment, power input shaft 51 is provided with the second inner spline gear section 511; The output shaft (not shown) of HM Hydraulic Motor 4 is provided with the second external spline teeth section; The second inner spline gear section 511 cooperates with the second external spline teeth section, and promptly power input shaft 51 is a spline fitted with the output shaft of HM Hydraulic Motor 4, has realized the driving of 4 pairs of power input shafts 51 of HM Hydraulic Motor.The right-hand member of power take-off shaft 52 is socketed with terminal pad 6, power take-off shaft 52 is driven with the input shaft (not shown) of second drive axle through terminal pad 6 be connected.Certainly, power input shaft 51 is not limited to the top specific embodiment of being given an example out with HM Hydraulic Motor 4, power take-off shaft 52 with the connection mode of the corresponding adapter shaft of second drive axle 22.
Referring to Fig. 7, preferably, show the another kind of specific embodiment of assisted deceleration actuating device 5.This assisted deceleration actuating device 5 is with the main difference part of above-mentioned embodiment: the dead axle reduction gear train is a single-stage dead axle reduction gear train.Particularly, this assisted deceleration actuating device 5 comprises: reducing gear box body 50, power input shaft 51, power take-off shaft 52, single-stage dead axle reduction gear train.Power input shaft 51 laterally arranges with power take-off shaft 52, and all through bearing installation on reducing gear box body 50.Single-stage dead axle reduction gear train comprises first gear 53 and second gear 54; First gear 53 and second gear, 54 direct engagement fit; The realization single-stage is slowed down, and single-stage is slowed down for the double reduction train, can realize increasing the effect of turning round with less reduction ratio deceleration.
Like this; When needs power take-off shaft 52 outputting powers; Air operated control declutch shift shaft (not shown among Fig. 7) promotes shift fork 551 makes the inner spline gear 561,563 of sliding hub 56 be enclosed within simultaneously in the first external spline teeth section 521 and the second tooth portion 541; Power promptly is delivered on the power take-off shaft 52 by second gear 54, thereby outputting power is given the input shaft of second drive axle 22.The power transmission line of this moment is: the input shaft of going up car engine 12-power takeoff 13-Hydraulic Pump 3-HM Hydraulic Motor 4-power input shaft 51-the first gear 53-the second gear 54-sliding hub 56-the first external spline teeth section 521-power take-off shaft 52-the second drive axle 22.
When declutch shift shaft control shift fork 551 moves axially the inner spline gear that makes sliding hub 56 and breaks away from the second tooth portion 541, then second gear, 54 idle running, no power takeoff.The power transmission line of this moment is: go up car engine 12-power takeoff 13-Hydraulic Pump 3-HM Hydraulic Motor 4-power input shaft 51-the first gear 53-the second gear 54.
Preferably; In this embodiment; Power input shaft 51 is provided with the second inner spline gear section 511; The output shaft (not shown) of HM Hydraulic Motor 4 is provided with the second external spline teeth section, and the second inner spline gear section 511 cooperates with the second external spline teeth section, realizes the driving of 4 pairs of power input shafts 51 of HM Hydraulic Motor.On power take-off shaft 52, be provided with the 3rd inner spline gear section 520; The input shaft (not shown) of second drive axle is provided with the 3rd external spline teeth section; The 3rd inner spline gear section 520 cooperates with the 3rd external spline teeth section, realizes that the driving of 52 pairs second drive axles 22 of power take-off shaft connects.
Need to prove, though in each embodiment of assisted deceleration actuating device 5 provided by the invention, power take-off shaft 52 is selectively driven by second gear 54 through the arrangement of clutch of being made up of parts such as declutch shift shaft 55, shift fork 551, sliding hubs 56.In practical application, can second gear 54 be fixedly mounted on the power take-off shaft 52, make power take-off shaft 52 and the 54 coaxial interlocks of second gear, reaching too slows down increases the effect of turning round.
In addition; Though the dead axle reduction gear train is illustrated with two-stage dead axle reduction gear train and single-stage dead axle reduction gear train respectively among the present invention; Obviously in practical application, the dead axle reduction gear train can also adopt greater than the multistage dead axle reduction gear train of two-stage particularly.
The above is merely preferred embodiment of the present invention; Not in order to restriction the present invention; All within spirit of the present invention and principle; Any modification of being done, be equal to replacement, improvement etc., for example the dead axle train of slowing down substituted with the planetary reduction gear train, all should be included within protection scope of the present invention.
Claims (10)
1. an engineering machinery vehicle comprises: engine in situ (11); First drive axle (21) by said engine in situ (11) driving; Last car engine (12);
It is characterized in that, also comprise: Hydraulic Pump (3), HM Hydraulic Motor (4), assisted deceleration actuating device (5) and second drive axle (22);
Wherein, said Hydraulic Pump (3) is gone up car engine (12) power taking from said, and is used for to said HM Hydraulic Motor (4) pressure oil being provided;
Said assisted deceleration actuating device (5) has power input shaft (51) and power take-off shaft (52); Said power take-off shaft (52) is with the speed or the zero-speed rotation of reduction ratio; Wherein said power input shaft (51) drives with the output shaft of said HM Hydraulic Motor (4) and is connected, and said power take-off shaft (52) drives with the input shaft of said second drive axle (22) and is connected.
2. engineering machinery vehicle according to claim 1 is characterized in that, said assisted deceleration actuating device (5) also comprises:
Reducing gear box body (50); Said power input shaft (51) is installed on the said reducing gear box body (50) through first backup bearing (501), and said power take-off shaft (52) is installed on the said reducing gear box body (50) through second backup bearing (502);
The dead axle reduction gear train is arranged in the said reducing gear box body (50); Said dead axle reduction gear train comprises at least: be arranged on first gear (53) on the said power input shaft (51) and be arranged on second gear (54) on the said power take-off shaft (52), said power take-off shaft (52) is driven by said second gear (54).
3. engineering machinery vehicle according to claim 2 is characterized in that,
Be provided with the 3rd backup bearing (503) between said power take-off shaft (52) and said second gear (54), and said power take-off shaft (52) is provided with the first external spline teeth section (521);
Said assisted deceleration actuating device (5) also comprises: can axially movable declutch shift shaft (55); Be installed in the shift fork (551) on the said declutch shift shaft (55); Sliding hub (56) is set on the said power take-off shaft (52), and has the first inner spline gear section (561) that cooperates with the said first external spline teeth section (521); Said sliding hub (56) can drive moving axially along said power take-off shaft (52) by said shift fork (551);
Also be provided with the first tooth portion (563) on the said sliding hub (56), said second gear (54) be provided with can with the second tooth portion (541) of said first tooth portion (563) engagement fit.
4. engineering machinery vehicle according to claim 3 is characterized in that, the said first tooth portion (563) is an inner spline gear, and the said second tooth portion (541) is an external spline teeth; Or the said first tooth portion is the first end face tooth, and the said second tooth portion is the second end face tooth.
5. engineering machinery vehicle according to claim 4; It is characterized in that; Said dead axle reduction gear train is a two-stage dead axle reduction gear train, also comprises: the tween drive shaft (57) that laterally arranges with said power input shaft (51), and be arranged on the 3rd gear (58) and the 4th gear (59) on the said tween drive shaft (57); Wherein said the 3rd gear (58) and said first gear (53) engagement fit, said the 4th gear (59) and said second gear (54) engagement fit.
6. engineering machinery vehicle according to claim 5; It is characterized in that; The axis of the axis of said power input shaft (51) and said power take-off shaft (52) coincides, and said power input shaft (51) is connected through the 4th backup bearing (504) with the two corresponding end of said power take-off shaft (52).
7. engineering machinery vehicle according to claim 3 is characterized in that, said the 3rd backup bearing (503) is a needle bearing.
8. engineering machinery vehicle according to claim 4; It is characterized in that; Said dead axle reduction gear train is a single-stage dead axle reduction gear train; Said power input shaft (51) laterally arranges with said power take-off shaft (52), and said first gear (53) and said second gear (54) engagement fit.
9. according to each described engineering machinery vehicle in the claim 1 to 8; It is characterized in that; Said power input shaft (51) is provided with the second inner spline gear section (511); The output shaft of said HM Hydraulic Motor (4) is provided with the second external spline teeth section, and the said second inner spline gear section (511) cooperates with the said second external spline teeth section.
10. according to each described engineering machinery vehicle in the claim 1 to 8, it is characterized in that said power take-off shaft (52) is connected with the input shaft of said second drive axle (22) through terminal pad (6); Or said power take-off shaft (52) is provided with the 3rd inner spline gear section (520), and the input shaft of said second drive axle is provided with the 3rd external spline teeth section, and said the 3rd inner spline gear section (520) cooperates with said the 3rd external spline teeth section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102137349A CN102729814A (en) | 2012-06-27 | 2012-06-27 | Engineering machinery vehicle |
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| CN2012102137349A CN102729814A (en) | 2012-06-27 | 2012-06-27 | Engineering machinery vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104002674A (en) * | 2014-06-10 | 2014-08-27 | 徐工集团工程机械股份有限公司 | Power transmission system, control method and single-engine type crane truck |
| CN104385896A (en) * | 2014-09-29 | 2015-03-04 | 太原理工大学 | Loader with bimotored power system |
| CN104477780A (en) * | 2014-12-04 | 2015-04-01 | 徐州重型机械有限公司 | Device and method for controlling crane operation speed |
| CN104553769A (en) * | 2013-10-10 | 2015-04-29 | 宁夏琪凯节能设备有限公司 | Energy-saving hydraulic transmission device |
| CN106274458A (en) * | 2016-08-30 | 2017-01-04 | 北汽福田汽车股份有限公司 | Vehicle |
| CN107215198A (en) * | 2017-06-29 | 2017-09-29 | 徐州重型机械有限公司 | Engineering truck |
| CN107364334A (en) * | 2017-07-21 | 2017-11-21 | 三汽车起重机械有限公司 | Automatic power taking open method and device |
| WO2022089574A1 (en) * | 2020-10-30 | 2022-05-05 | 中联重科股份有限公司 | Hydraulic auxiliary drive control system and method for upper vehicle of double-engine crane, and crane |
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Application publication date: 20121017 |