CN104385911B - Large tractor front steering drive axle - Google Patents
Large tractor front steering drive axle Download PDFInfo
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- CN104385911B CN104385911B CN201410683550.8A CN201410683550A CN104385911B CN 104385911 B CN104385911 B CN 104385911B CN 201410683550 A CN201410683550 A CN 201410683550A CN 104385911 B CN104385911 B CN 104385911B
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Abstract
The present invention discloses a kind of large tractor front steering drive axle；Technical problem to be solved is：The technical problem to be solved is：The handling capacity that muddy road surface is particularly in the presence of a harsh environment for existing tractor at present is poor, the problem that whole machine skidding is unable to walk often occurs.Using technical scheme be：Large tractor front steering drive axle, including axle housing, the main reducing gear with differential mechanism for being arranged on axle housing center, the steering cylinder of the center being arranged on axle housing, two knuckles for being arranged on axle housing left and right sides fist portion with regard to axle housing centrosymmetry, the wheel hub being connected with knuckle, the hub reduction gear being connected with wheel hub, two drive shafts and two steering linkages that are connected main reducing gear and two hub reduction gears.Advantage：Big using the front steering drive axle assembly large carrying capacity of the present invention program realization, output torque, easy installation and removal, lightweight, oil consumption are low, the road clearance is big, steady quality reliability, can fully meet use requirement and the prescription of four-wheel drive medium-sized tractor.
Description
Technical field
The present invention relates to a kind of large tractor front steering drive axle, in particulars relate to (>=140 horsepowers) of power and draws
Machine front steering drive axle assembly.
Background technology
As national farm Urbanization Construction and the intensive circulation of farm land contract and country are to mechanization of agriculture policy
Help and the allowance for purchase of agricultural machinery, four-wheel drive tractor is developed, but the steering of such type is a difficult problem.With tractor liquid
The development of pressure system, the application of present hydraulic steering can solve the problem that the steering difficult problem of such type.Simultaneously because
The working environment of tractor is comparatively very severe.High requirement is proposed by property, output torque etc. to whole machine；In recent years big
The volume of production and marketing of type tractor rises substantially, has the trend for substituting two-wheel drive tractor.Meanwhile, with carrying for technological equipment level
Height, new material, the application of new technology, user require structure simpler, more reliable performance to front steering drive axle, in order to keep in repair
Safeguard with reducing.
The large-scale four-wheel drive type used with tractor front steering drive axle assembly of existing domestic production, particularly exported product
With substantially being monopolized by imported product.The domestic manufacture and production for also having like product, but inclined there is fault rate using process
High, it is difficult to meet requirement of the client to quality.
At present, existing tractor in the presence of a harsh environment be particularly muddy road surface handling capacity poor, often there is whole machine
Skid and be unable to the problem of walking.
Content of the invention
The technical problem to be solved is：Muddy road is particularly in the presence of a harsh environment for existing tractor at present
The handling capacity in face is poor, the problem that whole machine skidding is unable to walk often occurs.
In order to overcome existing tractor in the presence of a harsh environment be particularly muddy road surface handling capacity poor, often there is whole machine
Skid and be unable to the problem of walking, present invention offer is a kind of to have installed a set of passive locking type circular cone tooth with friction element additional
Wheel differential mechanism, makes full use of the pull strength of whole machine, it is ensured that unequal distribution of the torque between driving moment has improved anti-slide performance.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of large tractor front steering drive axle, including axle housing, be arranged on axle housing center with differential mechanism
Main reducing gear, the steering cylinder of the center being arranged on axle housing, axle housing left and right sides fist is arranged on regard to axle housing centrosymmetry
Two knuckles in portion, the wheel hub being connected with knuckle, the hub reduction gear being connected with wheel hub, be connected main reducing gear and two and take turns
Two drive shafts and two steering linkages of side reducer；
The axle housing is provided with the pendulum key seat installation base being connected with outside tractor；
The main reducing gear with differential mechanism includes bevel housing, driving gear, driven gear, left differential carrier
Body, right differential carrier, planetary gear shaft, planetary gear, right axle shaft gear, piston, left half axle gear and friction plate group；The master
Reducer shell is connected with axle housing；The section of the bevel housing is cylindrical；The planetary gear shaft is mounted in right differential
In device shell；The planetary gear is in planetary gear shaft；The planetary gear engages connection right axle shaft respectively by profile of tooth
Gear and left half axle gear；The left differential casing is connected with right differential carrier, constitutes differential casing；The piston is installed
In differential carrier body, and the interior side seal by being arranged between piston and left differential casing and piston is arranged on right difference
Outer side seal between fast device shell forms a closed cavity and left differential casing between on the left of piston；The friction plate group
In differential carrier body；The left contact piston of the friction plate group；The right side of friction plate group is contacted by spacing spacer
Right differential carrier；The inner ring contact left half axle gear of friction plate group；The outer ring of friction plate group contacts the inwall of right differential carrier；Institute
State driving gear to be rotatably arranged on bevel housing；The driven gear is fixedly installed on the outer wall of left differential casing
On；The driven gear is meshed with driving gear；
Wherein, the friction plate group includes the static friction piece no less than and the movable friction plate no less than two；Described
Movable friction plate is arranged alternately with static friction piece；The movable friction plate is connected with the internal spline on right differential carrier by external splines；
The static friction piece is connected with the external splines on left half axle gear by internal spline；
One drive shaft is inserted in left half axle gear, and is connected with left half axle gear by screw thread pair；Another
Drive shaft is inserted in right axle shaft gear, and is connected with right axle shaft gear by screw thread pair.
Differential mechanism effect in present configuration：According to the kinematic requirement of running car and actual wheel, road with
And the mutual relation between them shows, the automobile in the process of moving stroke rolled across within the same time by left and right wheelses is often
It is differentiated.In the case where left and right wheelses stroke is not waited, if imparting power to left and right using rigid driving moment axle
Wheel, then can as the rotating speed of driving wheels is although equal stroke difference this motion contradiction, cause a certain driving wheel
Produce sliding or trackslip.Not only result in tire premature abrasion, power consumption and make driving wheel overload, can also be because of can not be by
Required instantaneous centre is turned to and makes maneuverability be deteriorated, further, since especially having when turning between wheel and road surface big
Trackslip or sliding, whole machine anti-slide performance is lost when turning to and is made bad stability.For eliminating these drawbacks, in left and right wheels
Between differential mechanism is housed, it is ensured that the wheel of drive axle both sides is not etc. that there is the characteristic that rotated with friction speed travelling, so as to
Meet the requirement of whole machine running movement.Differential mechanism employed in the present invention is the passive locking type circular cone with friction element
Gear differential mechanism；Its differential function is to be realized by symmetrical expression cone planetary gear structure, is open differential version, this
Secondary no longer state more.The effect of the differential mechanism in the present invention is mainly antiskid function, and its steerable system is hydraulic means, works as hydraulic oil
Entered by oil duct piston left side when, due to hydraulic action, promote piston to move to the right, eliminate movable friction plate and static friction
Gap frictional force is produced between piece；As static friction piece and left half axle gear are spline connection, movable friction plate and right differential mechanism
Shell is spline connection；Thus make without relative displacement between differential carrier and left half axle gear, realize differential mechanism and two drives
Moving axis (left and right) both sides are rigidly connected.Now, the left and right wheelses on tractor transmit the whole torques determined by adhesive force simultaneously,
Whole machine is made to depart from the severe road surface such as muddy road surface or sleet road surface.After disengaging, release applied hydraulic pressure, friction element it
Between frictional force disappear, differential mechanism working condition back to normal.The advantage of this structure is：Simple and reliable for structure, with low cost；
When forgetting to release differential mechanism pressure, Partial Power consumption can be only caused, differential gear will not occur and play tooth damage
Problem.
Further improve, the large tractor front steering drive axle in the present invention also includes two pendulum key seats；One pendulum
Key seat is connected with the pendulum key seat installation base on axle housing by bushing；Another pendulum key seat described is by bushing and final drive casing
Body phase connects.The present invention is connected with outside tractor for convenience, is provided with two pendulum key seats；Therefore, it is provided with its axle housing
Installation pendulum key seat boss is engaged with pendulum key seat so that the center ellipsoidal cross section of axle housing, reducing the same of material weight
When greatly improve the bearing load of overall front steering drive axle.Meanwhile, in order to reduce putting the vibration between key seat and axle housing and
Vibration between pendulum key seat and bevel housing, arranges lining between the pendulum key seat installation base on pendulum key seat and axle housing
Set, arranges bushing between pendulum key seat and bevel housing.When using, when installing with tractor, only need to be on pendulum key seat
Installing hole in be directly connected on tractor frame beam by bolt by complete to install.
Further improve, the hub reduction gear employed in the present invention can be reached using hub reduction gear of the prior art
Arrive required function.But the present invention is preferentially using the hub reduction gear of following structures.
Hub reduction gear of the present invention includes hub reducer casing, first planet gear and first planet wheel shaft；Described
Hub reducer casing is connected with wheel hub；The hub reducer casing inner chamber is provided with the gear ring supported by gear ring support, gear ring support
It is fixedly mounted on axle housing；The first planet gear is arranged on the first planet wheel shaft being fixed on hub reducer casing,
And engage with gear ring and drive shaft.
Hub reduction gear employed in the present invention, because first planet wheel shaft passes through interference fit with hub reducer casing
Install, in use, due to first planet strength of gear, first planet wheel shaft is designed with the magnitude of interference of hub reducer casing
In the case of irrational, first planet wheel shaft can occur first planet gear failure when axial float causes to take turns in oil leak or take turns；Cause
This, is provided with aperture at first planet wheel shaft edge in the present invention, and hub reducer casing is corresponding to be provided with deep gouge, pacifies between hole and groove
Dress Anti-moving ball, prevents the inside play of first planet wheel shaft, is provided with end cap in the outermost of hub reducer casing, prevents the first row
The outside play of spider gear shaft, first planet wheel shaft no longer play also just there is no longer the thing of oil leak to be occurred.
Further improve, described two drive shafts are segmentation structure；It is connected by constant velocity cardan joint between drive shaft.For
Transmission torque, in main reducing gear and two drive shafts of two hub reduction gears；For realizing steering, driving function simultaneously, drive
Axle adopts stagewise, middle part to be coupled together with constant velocity cardan joint.
Further improve, the width of the movable friction plate is more than the width of static friction piece.
Compared with prior art, its advantage is the present invention：
1st, big using the front steering drive axle assembly large carrying capacity of the present invention program realization, output torque, installing/dismounting
Convenient, lightweight, oil consumption is low, the road clearance is big, steady quality reliability, can fully meet making for four-wheel drive medium-sized tractor
With requiring and prescription.
2nd, in the front steering drive axle in the present invention additional a set of passive locking type conical gear with friction element has been installed
Differential mechanism, makes full use of the pull strength of whole machine, it is ensured that unequal distribution of the torque between driving moment has improved anti-slide performance, and keeps away
(shortcoming is mainly to exempt from the shortcoming of locking differential：Pressure locking is released not in time when whole machine departs from wheel-slip road surface
During mechanism, whole machine by produce with axle device without differential when as problem, such as cornering difficulties, tire accelerated wear test, make power train zero
Part transships and consumes excessive power etc. while differential gear can be caused to play tooth damage).
3rd, apparatus of the present invention are that increase road clearance and the output torque for meeting whole machine require that front steering drive axle assembly is adopted
With double reduction (primary speed-down realized by the main reducing gear with differential mechanism, realizes double reduction by hub reduction gear) structure；Two
Level slows down and can reduce while can requiring whole machine output torque is met that assembly overall dimensions are little, particularly main reducing gear
Contour dimension, while element size reduces, weight accordingly lowers, and indirectly reduces oil consumption, passes on Gong steadily, and output torque is more
Greatly.
Description of the drawings
Fig. 1 is the half sectional view of the structural representation of the present embodiment
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structure sectional view of the main reducing gear with differential mechanism.
Fig. 4 is the structure sectional view of differential mechanism.
Fig. 5 is zoomed-in view at the A of Fig. 4.
Fig. 6 is the structure sectional view of hub reduction gear.
In figure, 1. axle housing；2. knuckle；3. steering cylinder；4. steering linkage；5. the main reducing gear of differential mechanism is carried；6.
Drive shaft；7. wheel hub 7；8. hub reduction gear；8.11. hub reducer casing；8.12. the gear ring for supporting；8.13. gear ring support；
8.14. first planet gear；8.15. first planet wheel shaft；8.19. Anti-moving ball；8.20. end cap；8.30. aperture；8.31. it is heavy
Groove；9. left differential casing；10. right differential carrier；11. planetary gear shafts；12. planetary gears；13. right axle shaft gears；14. live
Plug；15. left half axle gears；16. static friction pieces；17. movable friction plates；18. bevel housings；19. driving gears；20. pendulum pins
Seat；21. bushings；Side seal in 22.；23. outer side seals；24. spacing spacers；25. constant velocity cardan joints；26. taper roll bearings；
Backing pin on 27.；28. times backing pins；Backing pin installing blind on 29.；30. times backing pin installing blinds；31. needle bearings；32. joint shafts
Hold；33. driven gears.
Specific embodiment
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to the enforcement
Example.
Understandable for becoming apparent from present disclosure, do further below in conjunction with accompanying drawing 1- Fig. 6 and specific embodiment
Description.
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
Embodiment：
If Fig. 1,2 are assembling stereogram of the invention；Including axle housing 1, the main reducing gear 5, steering cylinder with differential mechanism
3rd, two 2, two, knuckle wheel hub 7, two hub reduction gear 8, two pendulum 20, two drive shafts 6 of key seat and two steerings are drawn
Bar 4；
Axle housing 1 adopts one piece casting structure, and it is convex that the rear of axle housing 1 is provided with the pendulum key seat installation being connected with tractor frame beam
Platform 1.1, the middle part of axle housing 1 are provided with the cavity for installing main reducing gear 5；The section ovalize of 1 middle part of axle housing, in drop
Whole bridge bearing load is greatly improved while low material weight.One pendulum key seat 20 is fixed on the pendulum on axle housing 1 by bushing 21
On key seat installation base 1.1.
As shown in Figure 3,4.Main reducing gear 5 with differential mechanism is arranged in the cavity 5 of 1 center of axle housing, with differential
Bevel housing 18 in the main reducing gear 5 of device is bolted on axle housing 1.The front cast of bevel housing 18
Have columnar structured, installed with another pendulum key seat 21 by bushing 21, and realize the connection with vehicle frame.One drive shaft 6 one
End is loaded by the installing hole at 1 two ends of axle housing in 15 spline of left half axle gear of the main reducing gear 5 with differential mechanism, and the other end is worn
The installing hole that crosses on a knuckle 2 is connected with the first planet gear 8.14 in hub reduction gear 8 by spline；With
Sample, another 6 one end of drive shaft loads the right axle shaft of the main reducing gear 5 with differential mechanism by the installing hole at 1 two ends of axle housing
In 13 spline of gear, the other end is through the installing hole on another knuckle 2 by spline and in hub reduction gear 8
First planet gear 8.14 connects.
Two knuckles 2 are arranged on 1 left and right sides fist portion of axle housing with regard to 1 centrosymmetry of axle housing, and two knuckles 2 pass through
Taper roll bearing 26 is connected on two wheel hubs 7；Backing pin 27 and lower backing pin 28, upper backing pin is equipped with two knuckles 2
27 and lower backing pin 28 opposite and coaxial；The left and right two ends of axle housing 1 are equipped with backing pin installing blind 29 and lower backing pin installing blind
30, the upper backing pin installing blind 29 is rotated with upper backing pin 27 by needle bearing 31 and is connected, and lower backing pin installing blind 30 passes through
Oscillating bearing 32 is rotated with lower backing pin 28 and is connected.
Steering cylinder 3 is arranged on the center on axle housing 1, and steering cylinder 3 is fixed on bevel housing 18, turns to and draws
4 one end of bar is fixed on steering cylinder 3, and the other end is fixed on knuckle 2.Steering cylinder 3 can be with two-way by hydraulic action
Movement is synchronously turned to realizing left and right tractor wheels.
Two hub reduction gears 8 are connected with two wheel hubs 7 respectively.
The main reducing gear 5 with differential mechanism in the present embodiment includes bevel housing 18, driving gear 19, driven tooth
Wheel 33, left differential casing 9, right differential carrier 10, planetary gear shaft 11, planetary gear 12, right axle shaft gear 13, piston 14,
Left half axle gear 15 and friction plate group；Bevel housing 18 is connected with axle housing 1 by bolt；Planetary gear shaft 11 is mounted in right difference
In fast device shell 10；Planetary gear 12 is in planetary gear shaft 11；Planetary gear 12 is engaged by profile of tooth and connect respectively right half
Shaft gear 13 and left half axle gear 15；Left differential casing 9 is connected with right differential carrier 10, constitutes differential casing；Piston 14
In the differential carrier body, and the interior side seal 22 by being arranged between piston 14 and left differential casing 9 and it is arranged on
Formation one is close and left differential casing 9 between on the left of piston 14 for outer side seal 23 between piston 14 and right differential carrier 10
Close cavity.Friction plate group is in differential carrier body；The left contact piston 14 of friction plate group；Pass through on the right side of friction plate group
Spacing spacer 24 contacts right differential carrier 10；The inner ring contact left half axle gear 15 of friction plate group；The outer ring contact of friction plate group
The inwall of right differential carrier 10；Driving gear 19 is arranged on bevel housing 18 by being input into axis of rotation；Driven gear
On 33 outer walls for being fixedly installed on left differential casing 9；Driven gear 33 is meshed with driving gear 19.One drive shaft 6 is inserted
Enter in left half axle gear 15, and be connected with left half axle gear 15 by screw thread pair；Another drive shaft 6 is inserted into right axle shaft tooth
In wheel 13, and it is connected with right axle shaft gear 13 by screw thread pair.Friction plate group includes the static friction piece 16 of 14 and 15
Movable friction plate 17；Movable friction plate 17 is arranged alternately with static friction piece 16；Movable friction plate 17 is by external splines and right differential carrier
Internal spline on 10 is connected；Static friction piece 16 is connected with the external splines on left half axle gear 15 by internal spline.
As shown in Figure 5.Movable friction plate 17 and static friction piece 16 employed in the present embodiment is of the prior art rubbing
Pad.Width of the width of the movable friction plate 17 employed in the present embodiment more than static friction piece 16.
Differential mechanism effect in present configuration：According to the kinematic requirement of running car and actual wheel, road with
And the mutual relation surface between them, the automobile in the process of moving stroke rolled across within the same time by left and right wheelses is often
It is differentiated.In the case where left and right wheelses stroke is not waited, if imparting power to left and right using rigid driving moment axle
Wheel, then can as the rotating speed of driving wheels is although equal stroke difference this motion contradiction, cause a certain driving wheel
Produce sliding or trackslip.Not only result in tire premature abrasion, power consumption and make driving wheel overload, can also be because of can not be by
Required instantaneous centre is turned to and makes operability be deteriorated, further, since especially having when turning between wheel and road surface big
Trackslip or sliding, whole machine anti-slide performance is lost when turning to and is made bad stability.For eliminating these drawbacks, in left and right wheels
Between differential mechanism is housed, it is ensured that the wheel of drive axle both sides is not etc. that there is the characteristic that rotated with friction speed travelling, so as to
Meet the requirement of whole machine running movement.Differential mechanism employed in the present invention is the passive locking type circular cone with friction element
Gear differential mechanism；Its differential function is to be realized by symmetrical expression cone planetary gear structure, is open differential version, this
Secondary no longer state more.The effect of the differential mechanism in the present invention is mainly antiskid function, and its steerable system is hydraulic means, works as hydraulic oil
Entered by oil duct piston 14 left side when, due to hydraulic action, promote piston 14 to move to the right, eliminate 17 He of movable friction plate
Gap frictional force is produced between static friction piece 16；As static friction piece 16 and left half axle gear 15 are spline connection, dynamic friction
Piece 17 is spline connection with right differential carrier 10；Thus make between differential carrier and left half axle gear 15 without relative displacement,
Realize that differential mechanism is rigidly connected with two drive shafts 6 (left and right) both sides.Now, the left and right wheelses on tractor are transmitted simultaneously by attached
Put forth effort the whole torques for determining, make whole machine depart from the severe road surface such as muddy road surface or sleet road surface.After disengaging, releasing is applied
Hydraulic pressure, the frictional force between friction element disappear, differential mechanism working condition back to normal.The advantage of this structure is：Knot
Structure is simple and reliable, with low cost；When forgetting to release differential mechanism pressure, Partial Power consumption can be caused only, will not be occurred
Differential gear beats the problem of tooth damage.
Hub reduction gear 8 employed in the present embodiment using hub reduction gear of the prior art can reach needed for
Function.But the present embodiment is preferentially using the hub reduction gear of following structures.
As shown in Figure 6.Hub reduction gear 8 in the present embodiment includes hub reducer casing 8.11, first planet gear
8.14 and first planet wheel shaft 8.15；Hub reducer casing 8.11 is connected with wheel hub 7；8.11 inner chamber of hub reducer casing be provided with by
The gear ring 8.12 that gear ring support 8.13 is supported, gear ring support 8.13 are fixedly mounted on axle housing 8.1；First planet gear 8.14 leads to
Needle roller 8.18 is crossed on the first planet wheel shaft 8.15 that is fixed on hub reducer casing 8.11, and with gear ring 8.12 and drive
Moving axis 6 is engaged.
Hub reduction gear 8 employed in the present embodiment, because first planet wheel shaft 8.15 and hub reducer casing 8.11
Installed by interference fit, in use, due to 8.14 stress of first planet gear, first planet wheel shaft 8.15 and wheel side
Reducing gearbox 8.11 the magnitude of interference design irrational in the case of first planet wheel shaft 8.15 can occur axial float cause take turns side
Oil leak or wheel side first planet gear 8.14 are damaged；Therefore, aperture is provided with 8.15 edge of first planet wheel shaft in the present embodiment
8.30, hub reducer casing 8.11 is corresponding to be provided with deep gouge 8.31, installs Anti-moving ball 8.19, prevent the first row between hole and groove
8.15 inside play of spider gear shaft, is provided with end cap 8.20 in the outermost of hub reducer casing 8.11, prevents first planet wheel shaft
8.15 outside plays, the no longer play of first planet wheel shaft 8.15 also just there is no longer the thing of oil leak to be occurred.
Two drive shafts 6 in the present embodiment are segmentation structure；It is connected by constant velocity cardan joint 25 between drive shaft 6.
For transmitting torque, in main reducing gear 5 and two drive shafts 6 of two hub reduction gears 8；For realizing steering, driving function simultaneously,
Drive shaft 6 adopts stagewise, middle part constant velocity cardan joint 25 to couple together.
During steering, steering cylinder 3 by pulling and promotes steering linkage 4 to control the rotation of knuckle 2, so as to realize vehicle
Steering.
Although as described above, having represented with reference to specific preferred embodiment and having described the present invention, which must not be explained
It is to the restriction of itself of the invention.Under the premise of the spirit and scope of the present invention defined without departing from claims, can be right
Various changes can be made in the form and details for which.
Claims (5)
1. a kind of large tractor front steering drive axle, including axle housing (1), be arranged on axle housing (1) center with differential
The main reducing gear (5) of device, the steering cylinder (3) of the center being arranged on axle housing (1), with regard to axle housing (1) centrosymmetry arrange
The wheel hub (7) that two knuckles (2) in axle housing (1) left and right sides fist portion are connected with knuckle (2) is connected with wheel hub (7)
Hub reduction gear (8), two drive shafts (6) of connection main reducing gear (5) and two hub reduction gears (8) and two steering linkages
(4)；
Characterized in that, axle housing (1) is provided with pendulum key seat installation base (1.1) being connected with outside tractor；
The main reducing gear (5) with differential mechanism includes bevel housing (18), driving gear (19), driven gear
(33), left differential casing (9), right differential carrier (10), planetary gear shaft (11), planetary gear (12), right axle shaft gear
(13), piston (14), left half axle gear (15) and friction plate group；Bevel housing (18) are connected with axle housing (1)；Described
The section of bevel housing (18) is cylindrical；Planetary gear shaft (11) are mounted in right differential carrier (10)；The row
Star gear (12) is in planetary gear shaft (11)；Planetary gear (12) engage connection right axle shaft tooth respectively by profile of tooth
Wheel (13) and left half axle gear (15)；Left differential casing (9) are connected with right differential carrier (10), constitute differential carrier
Body；Described piston (14) are arranged in differential carrier body, and by being arranged between piston (14) and left differential casing (9)
Interior side seal (22) and the outer side seal (23) that is arranged between piston (14) and right differential carrier (10) are on the left of piston (14)
A closed cavity is formed between left differential casing (9)；The friction plate group is in differential carrier body；The friction
The left contact piston (14) of piece group；The right side of friction plate group contacts right differential carrier (10) by spacing spacer (24)；Friction
Inner ring contact left half axle gear (15) of piece group；The outer ring of friction plate group contacts the inwall of right differential carrier (10)；The active
Gear (19) is rotatably arranged on bevel housing (18)；Driven gear (33) are fixedly installed on left differential casing
(9) on outer wall；Driven gear (33) are meshed with driving gear (19)；
Wherein, the friction plate group includes the static friction piece (16) no less than and the movable friction plate (17) no less than two；
Movable friction plate (17) is arranged alternately with static friction piece (16)；Movable friction plate (17) is by external splines and right differential carrier (10)
Internal spline is connected；Static friction piece (16) is connected with the external splines on left half axle gear (15) by internal spline；
One drive shaft (6) are inserted in left half axle gear (15), and are connected with left half axle gear (15) by screw thread pair；
Another drive shaft (6) is inserted in right axle shaft gear (13), and is connected with right axle shaft gear (13) by screw thread pair.
2. large tractor as claimed in claim 1 front steering drive axle, it is characterised in that the large tractor is with front
Steering and driving axle also includes two pendulum key seat (20)；One pendulum key seat (20) is by the pendulum on bushing (21) and axle housing (1)
Key seat installation base (1.1) is connected；Another pendulum key seat (20) described is connected with bevel housing (18) by bushing (21).
3. large tractor as claimed in claim 1 front steering drive axle, it is characterised in that hub reduction gear (8)
Including hub reducer casing (8.11), first planet gear (8.14) and first planet wheel shaft (8.15)；The hub reduction gear
Shell (8.11) is connected with wheel hub (7)；Hub reducer casing (8.11) inner chamber is provided with the tooth supported by gear ring support (8.13)
Circle (8.12), gear ring support (8.13) are fixedly mounted on axle housing (8.1)；Described first planet gear (8.14) are installed in fixation
On the first planet wheel shaft (8.15) on hub reducer casing (8.11), and engage with gear ring (8.12) and drive shaft (6).
4. large tractor as claimed in claim 1 front steering drive axle, it is characterised in that two drive shafts (6) for point
Segmentation structure；It is connected by constant velocity cardan joint (25) between drive shaft (6).
5. large tractor as claimed in claim 1 front steering drive axle, it is characterised in that the width of movable friction plate (17)
Width more than static friction piece (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683550.8A CN104385911B (en) | 2014-11-24 | 2014-11-24 | Large tractor front steering drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683550.8A CN104385911B (en) | 2014-11-24 | 2014-11-24 | Large tractor front steering drive axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104385911A CN104385911A (en) | 2015-03-04 |
| CN104385911B true CN104385911B (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410683550.8A Active CN104385911B (en) | 2014-11-24 | 2014-11-24 | Large tractor front steering drive axle |
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| Country | Link |
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| CN (1) | CN104385911B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105584359A (en) * | 2016-03-28 | 2016-05-18 | 泉州鑫豪工程机械科技有限公司 | Excavator steering drive axle |
| CN106741244A (en) * | 2017-03-14 | 2017-05-31 | 四川川龙拖拉机制造有限公司 | A kind of tractor leveling assembly and leveling tractor |
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| CN104385911A (en) | 2015-03-04 |
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