CN104088983B - Planetary gear type convex block slip limiting inter-axle differential for automobile - Google Patents

Planetary gear type convex block slip limiting inter-axle differential for automobile Download PDF

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Publication number
CN104088983B
CN104088983B CN201410360331.6A CN201410360331A CN104088983B CN 104088983 B CN104088983 B CN 104088983B CN 201410360331 A CN201410360331 A CN 201410360331A CN 104088983 B CN104088983 B CN 104088983B
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CN
China
Prior art keywords
limit
projection
forerunner
fixing frame
planet wheel
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Expired - Fee Related
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CN201410360331.6A
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Chinese (zh)
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CN104088983A (en
Inventor
肖名涛
孙松林
谢方平
蒋蘋
吴明亮
张利峰
李军政
吴畏
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Hunan Agricultural University
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Hunan Agricultural University
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Priority to CN201410360331.6A priority Critical patent/CN104088983B/en
Publication of CN104088983A publication Critical patent/CN104088983A/en
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Publication of CN104088983B publication Critical patent/CN104088983B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H2048/201—Arrangements for suppressing or influencing the differential action, e.g. locking devices with means directly braking the orbital gears

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

Disclosed is a planetary gear type convex block slip limiting inter-axle differential for an automobile. A driving shaft is arranged inside a box body. One end of the driving shaft is installed inside a gear type gear ring, and the other end of the driving shaft is installed inside a rear driving power shaft. The gear type gear ring is installed inside the box body. A front driving power shaft is sleeved with a front driving gear. A slip limiting fixing frame is installed on the driving shaft. A front driving integration sun gear and a rear driving integration sun gear are integrated on the driving shaft. Front driving planetary gears are evenly distributed on the slip limiting fixing frame in the circumferential direction through a front driving planetary gear supporting assembly. Rear driving planetary gears are evenly distributed on the rear driving power shaft in the circumferential direction through a rear driving planetary gear supporting assembly. A slip limiting convex block is arranged between the slip limiting fixing frame and the box body and installed between a left fixed convex block and a right fixed convex block. The left fixed convex block and the right fixed convex block reduce the rotating speed of the slip limiting fixing frame through the slip limiting convex block so as to achieve the slip limiting effect. Due to the fact that planetary gear mechanisms in a front row and a rear row have the equal structural parameters, the problem of inconsistent non-proportional output of front travelling wheels and rear travelling wheels is effectively solved.

Description

Planetary gear type projection limit coaster interaxial differential
Technical field
The present invention relates to farm machinery transmission technology field, particularly relate to a kind of planetary gear type projection limit coaster interaxial differential.
Background technique
The especially general purpose wheeled tractor of agri-vehicle travels in field usually, but because field soil quality is soft, traction is little, for increasing the driving force of tractor, usually adopting and strengthening driving wheel diameter, increasing the mode such as pattern depth and four-wheel drive; Wherein, strengthen wheel diameter and the steering capability of front-wheel can be made to weaken, therefore in order to improve driving force on the basis not reducing tractor steering ability, the common structure of tractor is that front-wheel is little and trailing wheel is large; The degree of depth increasing tyre tread is worn and torn along with the use of tire, can not increase the driving force of tractor from essence; Adopt four-wheel drive, must design specialized gear to overcome the problem causing front wheel rotation speed different because wheel size differs.Skid because tractor easily occurs driving when field work simultaneously, in order to improve the passing ability of tractor, tractor is configured with pressure differential lock usually, manual control mode forced locking differential mechanism is adopted when occurring that driving wheel skids, so not only reduce working efficiency, and add the complexity of Dynamic System.
Summary of the invention
Technical problem solved by the invention is to provide a kind of planetary gear type projection to limit coaster with interaxial differential, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Planetary gear type projection limit coaster interaxial differential, comprise casing, wherein, driving shaft is provided with in casing, driving shaft one end is installed in gear type gear ring, the other end is installed in rear driving mechanical axis, and gear type gear ring is installed in casing, rear driving mechanical axis is installed in end cap, front wheel driving mechanical axis is installed in casing, forerunner's gear set is on front wheel driving mechanical axis, and forerunner's gear engages with the outer gear of gear type gear ring, by the transmission of power of gear type gear ring to forerunner's gear, forerunner's gear drives front wheel driving mechanical axis to rotate by spline again and outputs power to front drive axle, forerunner's outside framework oil seal is installed in casing, forerunner's outside framework oil seal is set on front wheel driving mechanical axis, dynamic rotary for front wheel driving mechanical axis seals, in casing, be also provided with the rear-guard outside framework oil seal for the sealing of rear driving mechanical axis dynamic rotary simultaneously, rear-guard outside framework oil seal is set on rear driving mechanical axis, the sliding fixing frame of limit is installed on driving shaft, and the integrated sun gear of forerunner and the integrated sun gear of rear-guard are integrated on driving shaft, in addition, forerunner's planet wheel supporting component is identical with rear-guard planet wheel supporting component structure, forerunner's planet wheel is installed on the sliding fixing frame of limit by forerunner's planet wheel supporting component circumference is uniform, and engage with the inner ring gear of gear type gear ring, the integrated sun gear of forerunner while of forerunner's planet wheel, rear-guard planet wheel is installed on rear driving mechanical axis by rear-guard planet wheel supporting component circumference is uniform, and engages with the inner ring gear of limit cunning fixing frame, the integrated sun gear of rear-guard while of rear-guard planet wheel, and limited sliding projection is set between the sliding fixing frame of limit and casing, and the sliding projection of limit is arranged on and leftly determines projection and the right side is determined between projection, projection is determined on a left side and projection arranged in dislocation is determined on the right side, and at the sliding projection of limit, projection is determined on a left side and the right side determines projection to be respectively arranged with groove, inclined-plane and boss, align with the groove center that projection is determined on the right side in left boss center of determine projection, the centre distance that a left side determines projection and the right side to determine projection is greater than the maximum position limitting cunning projection.
In the present invention, the snap ring five for axial limiting is installed in end cap.
In the present invention, be provided with outside framework oil seal in casing, be set on driving shaft simultaneously, the dynamic rotary for driving shaft seals.
In the present invention, end cap and casing coordinate and install and be connected fastening by end cap clamping bolt.
In the present invention, front wheel driving mechanical axis is provided with for carrying out spacing snap ring two to forerunner's gear.
In the present invention, forerunner's planet wheel supporting component comprises component slippage bearing, assembly screw and assembly back-up ring, assembly back-up ring interference fit is installed in forerunner's planet wheel, forerunner's planet wheel is loaded on assembly screw by component slippage bearing housing and dallies, assembly screw one end is installed on the sliding fixing frame of limit by screw threads for fastening, the other end is set with assembly back-up ring, and assembly back-up ring is used for the axial limiting to forerunner's planet wheel.
In the present invention, the sliding projection of limit is anchored on cabinet wall by anti-skidding fastening screw trip bolt.
In the present invention, the sliding projection of limit is set on the sliding fixing frame of limit, and the sliding projection of limit and the sliding fixing frame of limit are spline gaps coordinates and installs, and limit is slided projection and can be horizontally slipped limitting to slide on fixing frame.
In the present invention, projection is determined on a left side, right sum apart of determining projection and the sliding projection of limit is less than the height of boss.
In the present invention, without normal vehicle operation under the effect of external motion resistance, driving shaft is rotated counterclockwise under powered attendant-controlled wheelchairs driving, and drives forerunner's planet wheel to rotate by the integrated sun gear of forerunner, drives rear-guard planet wheel to rotate by the integrated sun gear of rear-guard, and under the effect having external motion resistance, forerunner's planet wheel impels the sliding fixing frame of limit to be rotated counterclockwise trend by forerunner's planet wheel supporting component, and rear-guard planet wheel impels the sliding fixing frame of limit to turn clockwise trend by rear-guard planet wheel supporting component, now, rear-guard planet wheel is contrary to limitting the force direction of sliding fixing frame with forerunner's planet wheel to the active force of the sliding fixing frame of limit, when active force equal and opposite in direction, the sliding fixing frame of limit keeps geo-stationary, forerunner's planet wheel and rear-guard planet wheel indifferential Power output, when active force differs in size, the sliding fixing frame of limit produces relative movement, the power of one end is flowed to the other end, to realize shaft space difference speed.
The concrete motion mode of differential is: power inputs rear portion through the wheeled gear ring of forerunner's planet wheel driving gear through driving shaft, and pass through forerunner's gear by transmission of power to front drive axle part, another part drives rear driving mechanical axis through rear-guard planet wheel, and by the spline on rear driving mechanical axis by transmission of power to back driving axle part; When driving shaft with rated speed by the angular velocity of the wheeled gear ring of forerunner's planet wheel driving gear be greater than gear type gear ring end outside travel feed back to the angular velocity of differential mechanism front wheel driving mechanical axis time, forerunner travels wheel and the sliding fixing frame of limit will be driven to rotate by forerunner's planet wheel supporting component, and the rotation of the sliding fixing frame of limit will speed up the driving of rear-guard planet wheel to rear driving mechanical axis, namely driving shaft drives the angular velocity of rear driving mechanical axis to increase, to increase driving rear-guard being travelled to wheel with rated speed; Otherwise, driving shaft with rated speed by rear-guard planet wheel drive the angular velocity of rear driving mechanical axis be greater than rear driving mechanical axis end outside travel feed back to the angular velocity of differential mechanism rear driving mechanical axis time, rear-guard travels wheel by transmission of power to the sliding fixing frame of limit, the rotation of the sliding fixing frame of limit accelerates forerunner's planet wheel to the driving of front wheel driving mechanical axis, namely driving shaft drives the angular velocity of front wheel driving mechanical axis to increase with rated speed, to increase driving forerunner being travelled to wheel, and then realize forerunner and travel wheel and travel the motivational drive between centers differential of taking turns with rear-guard.
In the present invention, the sliding fixing frame of limit rotarily drives the sliding projection of limit and determines projection on a left side and determine to swing between projection to rotate in a circumferential direction in the right side, when limitting the speed that rotates in a circumferential direction of sliding projection slower, limit sliding projection external structure is subject to leftly determining projection and the right side to determine the impact of projection internal structure less, rotate in a circumferential direction smoothly, but when the sliding projection of limit rotates in a circumferential direction speed, left internal structure of determine projection and the right side to determine projection by rapid to limitting cunning projection external structure to have an impact, now leftly determine projection and the right side and determine projection and limit rotating in a circumferential direction of cunning projection by blocking, it is made to be decelerated to limes superiors speed when can rotate smoothly, when normal differential drives, the sliding projection of limit that the rotational speed of the sliding fixing frame of limit is not enough to make to be driven to rotate and a left side are determined projection and the right side and are determined projection effect and produce and block, when differential mechanism one end, ransaxle is blocked, and the other end occur in driving process skid time, when engine power is constant, sharply decline because driving driving force instantaneously of skidding, rotating speed instantaneously will be caused sharply to rise, under the driving of the high driving shaft of rotating speed, the rotating speed of the sliding fixing frame of limit also increases, when rotating speed reach the sliding projection of limit and a left side determine projection and the right side determine the retardance lowest limit speed of projection time, left determine projection and the right side and determine projection and produce reduction of speed to limitting the effect of cunning projection, reduce the rotating speed of the sliding fixing frame of limit instantaneously, controlled within the scope of setting limit speed, play the effect that limit is sliding.
Beneficial effect: the present invention adopts the planetary gears of the structural parameter such as front two rows, power input is inputted by the integrated sun gear of two groups of planetary gears, forerunner adopts gear type gear ring to export, rear-guard adopts rear driving mechanical axis to export, to form slowdown type interaxial differential, the traveling wheel non-equal proportion caused not of uniform size efficiently solving front and back ransaxle exports problem, and the planet carrier of forerunner and the gear ring of rear-guard are combined to form and limit sliding fixing frame simultaneously, and the sliding fixing frame of limit installs limited sliding projection; When occurring driving high speed to skid, the sliding projection of limit rotates and is limited, and achieves differential limit and slides effect; And there is the effect of differential, main deceleration and slide limiting differential simultaneously, be conducive to improving the tractor chassis ground Clearance, strengthening adhesion, improve the passing ability of tractor.
Accompanying drawing explanation
Fig. 1 is the structural representation of preferred embodiment of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right elevation of Fig. 1.
Fig. 4 is A-A place sectional view in Fig. 1.
Fig. 5 is forerunner's planet wheel supporting component and rear-guard planet wheel supporting component structural representation in preferred embodiment of the present invention.
Fig. 6 is that in preferred embodiment of the present invention, the sliding projection of limit determine projection and cunning schematic diagram is limit in the right side operation determined between projection on a left side.
Fig. 7 is the concrete use schematic diagram of preferred embodiment of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See planetary gear type projection limit coaster the interaxial differential of Fig. 1 ~ Fig. 6, comprise forerunner's planet wheel supporting component 1, end cap clamping bolt 2, end cap 3, snap ring 1, forerunner's outside framework oil seal 5, forerunner's gear 6, snap ring 27, outside framework oil seal 28, driving shaft 9, gear type gear ring 10, bearing 1, bearing 2 12, the sliding fixing frame 13 of limit, rear-guard planet wheel 14, rear-guard planet wheel supporting component 15, bearing 3 16, bearing 4 17, rear driving mechanical axis 18, rear-guard outside framework oil seal 19, casing 20, anti-skidding fastening screw trip bolt 21, the sliding projection 22 of limit, forerunner's planet wheel 23, the integrated sun gear 24 of forerunner, snap ring 3 25, bearing 5 26, bearing 6 27, snap ring 4 28, the integrated sun gear 29 of rear-guard, projection 30 is determined on a left side, snap ring 5 31, snap ring 6 32, bearing 7 33, front wheel driving mechanical axis 34, projection 35 is determined on the right side, groove 36, inclined-plane 37, boss 38, component slippage bearing 1-1, assembly screw 1-2, assembly back-up ring 1-3.
In the present embodiment, driving shaft 9 one end is installed in gear type gear ring 10 by bearing 2 12, the other end is installed in rear driving mechanical axis 18 by bearing 3 16, gear type gear ring 10 is installed in casing 20 by bearing 1, rear driving mechanical axis 18 is installed in end cap 3 by bearing 4 17, end cap 3 coordinates with casing 20 to be installed and is connected fastening by end cap clamping bolt 2, front wheel driving mechanical axis 34 is installed in casing 20 by bearing 7 33, forerunner's gear 6 to be set on front wheel driving mechanical axis 34 and spacing by snap ring 27, and forerunner's gear 6 engages with the outer gear of gear type gear ring 10, with by the transmission of power of gear type gear ring 10 to forerunner's gear 6, forerunner's gear 6 drives front wheel driving mechanical axis 34 to rotate by spline again, and output power to front drive axle, snap ring 5 31 is installed in end cap 3, snap ring 27 is installed on front wheel driving mechanical axis 34, snap ring 1 is installed in casing 20, snap ring 5 31, snap ring 27 and snap ring 1 are all for axial limiting, outside framework oil seal 28 is installed in casing 20, be set on driving shaft 9 simultaneously, dynamic rotary for driving shaft 9 seals, forerunner's outside framework oil seal 5 is installed in casing 20, be set on front wheel driving mechanical axis 34 simultaneously, dynamic rotary for front wheel driving mechanical axis 34 seals, rear-guard outside framework oil seal 19 is installed in casing 3, be set on rear driving mechanical axis 18 simultaneously, dynamic rotary for rear driving mechanical axis 18 seals, the sliding fixing frame 13 of limit is installed on driving shaft 9 respectively by bearing 5 26 and bearing 6 27, and by snap ring 3 25 and snap ring 4 28 to its axial limiting, the integrated sun gear 24 of forerunner and snap ring 4 28 are integrated on driving shaft 9, forerunner's planet wheel 23 is installed on the sliding fixing frame 13 of limit by forerunner's planet wheel supporting component 1 is circumferentially uniform, and forerunner's planet wheel 23 simultaneously with the inner ring gear of gear type gear ring 10, the integrated sun gear 24 of forerunner engages, rear-guard planet wheel 14 is installed on rear driving mechanical axis 18 by rear-guard planet wheel supporting component 15 circumference is uniform, and rear-guard planet wheel 14 slides the inner ring gear of fixing frame 13 with limit simultaneously, the integrated sun gear 29 of rear-guard engages, projection 30 is determined on a left side and the right side determines to install limited sliding projection 22 between projection 35, the sliding projection 22 of limit is anchored on casing 20 inwall by anti-skidding fastening screw trip bolt 21, and be set on the sliding fixing frame 13 of limit, and the sliding projection 22 of limit coordinates for spline gaps with the sliding fixing frame 13 of limit, limit sliding projection 22 can horizontally slip on the sliding fixing frame 13 of limit.
In forerunner's planet wheel supporting component 1, component slippage bearing 1-1 interference fit is installed in forerunner's planet wheel 23, forerunner's planet wheel 23 is set on assembly screw 1-2 by component slippage bearing 1-1 and dallies, assembly screw 1-2 one end is installed on the sliding fixing frame 13 of limit by screw threads for fastening, the other end is set with assembly back-up ring 1-3 for the axial limiting to forerunner's planet wheel 23, and rear-guard planet wheel supporting component 15 structure is consistent with forerunner's planet wheel supporting component 1.
In the present embodiment, the gear ratio of the inner ring gear of gear type gear ring 10 and the integrated sun gear 24 of forerunner is α, and the sliding inner ring gear of fixing frame 13 of limit and the gear ratio of the integrated sun gear 29 of rear-guard are also α; According to the drive characteristic of planetary gears, forerunner is inputted through limitting sliding fixing frame 13 to fix by the integrated sun gear of forerunner 24, is exported by gear type gear ring 10, and its velocity ratio is that-α "-" represents that gear type gear ring 10 is contrary with forerunner's integrated sun gear 24 rotating speed; Rear-guard is inputted through limitting sliding fixing frame 13 to fix by the integrated sun gear of rear-guard 29, is exported by rear driving mechanical axis 18, and its velocity ratio is 1+ α; Because it exports velocity ratio difference, can realize travelling not of uniform size the causing between axle for vehicle of wheel and drive differential; And utilize forerunner to export and rear-guard output speed opposite characteristic, the planet carrier of forerunner and the gear ring of rear-guard being connected as one formed and limit sliding fixing frame 13, when limitting sliding fixing frame 13 to rotate with certain speed, playing shaft space difference speed effect.Meanwhile, in order to overcome because forerunner exports the problem contrary with rear-guard output speed, by changing the transmission direction of arbitrary drive bevel gear of forerunner's differential mechanism or rear-guard differential mechanism.
Shown in Figure 7, front drive axle is consistent with back driving axle structure, and forerunner travel wheel be less than rear-guard travel wheel, differential mechanism normally travels when front drive axle and back driving axle driven travel and take turns has without the need to differential the velocity ratio mated, as pressed shown in C direction in Fig. 1, driving shaft 9 is rotated counterclockwise under powered attendant-controlled wheelchairs driving, forerunner's planet wheel 23 is driven to rotate by the integrated sun gear 24 of forerunner, rear-guard planet wheel 14 is driven to rotate by the integrated sun gear 29 of rear-guard, under the effect of external motion resistance, forerunner's planet wheel 23 impels the sliding fixing frame 13 of limit to have the trend be rotated counterclockwise by forerunner's planet wheel supporting component 1, and rear-guard planet wheel 14 has to the sliding fixing frame 13 of limit the trend impelling it to turn clockwise, rear-guard planet wheel 14 like this is contrary to limitting the force direction of sliding fixing frame 13 with forerunner's planet wheel 23 to the active force of the sliding fixing frame 13 of limit, power inputs rear portion through the wheeled gear ring 10 of forerunner's planet wheel 23 driving gear through driving shaft 9, and drive front wheel driving mechanical axis 34 to rotate transmission of power to front drive axle part by forerunner's gear 6, another part drives rear driving mechanical axis 18 through rear-guard planet wheel 14, and by the internal spline on rear driving mechanical axis 18 by transmission of power to back driving axle part, carrying out practically state is as follows: suppose
Sliding fixing frame 13 geo-stationary of limit, driving shaft 9 is with the angular velocity of rated speed by the wheeled gear ring 10 of forerunner's planet wheel 23 driving gear: ω 1;
Now, the outside angular velocity feeding back to the gear type gear ring 10 of differential mechanism that travels of gear type gear ring 10 end is: ω 2;
Sliding fixing frame 13 geo-stationary of limit, driving shaft 9 drives the angular velocity of rear driving mechanical axis 18 by rear-guard planet wheel 14 with rated speed: ω 3;
Now, the outside angular velocity feeding back to the rear driving mechanical axis 18 of differential mechanism that travels of rear driving mechanical axis 18 end is: ω 4;
Be subject to external influence when forerunner travels wheel 23 and impel ω 2< ω 1time, power drives the sliding fixing frame 13 of limit to rotate by forerunner's planet wheel supporting component 1 by forerunner's planet wheel 23, and the rotation of the sliding fixing frame 13 of limit will speed up the driving of rear-guard planet wheel 14 pairs of rear driving mechanical axis 18, i.e. ω 3become large, to increase driving rear-guard being travelled to wheel 14; Otherwise, be subject to external influence when rear-guard traveling wheel 14 and impel ω 4< ω 3time, rear-guard travels wheel 14 certainly will by transmission of power to the sliding fixing frame 13 of limit, and the rotation of the sliding fixing frame 13 of limit will speed up the driving that forerunner travels wheel 23 pairs of gear type gear rings 10, i.e. ω 1become large, to increase driving forerunner being travelled to wheel 23, to realize front and back motivational drive between centers differential;
When limitting sliding fixing frame 13 to rotate, the sliding projection 22 of drive limit determines projection 30 on a left side and determine to swing between projection 35 to rotate in a circumferential direction in the right side, as shown in Figure 6, the sliding projection 22 of limit, a left side are determined projection 30 and are determined projection 35 to be processed with respectively groove 36, inclined-plane 37 and boss 38 with the right side, and right determine projection 35 and a left side and determine projection 30 and stagger and install, the height of boss 38 is s, and groove 36 width a is three times of boss 38 width b; Align with the groove center that projection 35 is determined on the right side in left boss center of determining projection 30, left centre distance of determine projection 30 and the right side to determine projection 35 is greater than the maximum position limitting cunning projection 22, the sliding projection 22 of limit determines projection 30 at a distance of t with a left side, the sliding projection 22 of limit determines projection 35 at a distance of d with the right side, wherein (t+d) <s, t+d determines with value size the sliding control effects of limit that limit slides projection 22, t+d's is larger with value, the sliding control effects of limit is poorer, t+d's is less with value, the sliding effect of limit is better, but t+d have influence on differential effect with the too small meeting of value; Be provided with in the sliding projection 22 of limit mobile boss 1., mobile boss 2. and mobile boss 3., below with the mobile boss of the sliding projection 22 of limit in Fig. 6-1 1. act as example, current back driving axle has when slightly relatively trackslipping, the sliding projection 22 of limit rotates, due to the effect 1. of mobile boss, the sliding projection 22 of limit determine projection 30 and the right side and is determined move left and right in the chute that projection 35 forms and rotate on a left side, moving in the position of Fig. 6-2 from Fig. 6-1, the sliding projection 22 of limit have rotated a lug boss position in a circumferential direction, moves x+y distance to the right in the axial direction; Moving in the position of Fig. 6-3 from Fig. 6-2, the sliding projection 22 of limit have rotated a lug boss position in a circumferential direction, moves x+y distance to the left in the axial direction; Simultaneously owing to limitting sliding projection 22 when its differential moves left and right, move left and right at chute axis and reduce its rotational speed, and then playing the effect of slide limiting differential.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (10)

1. planetary gear type projection limit coaster interaxial differential, comprise casing, it is characterized in that, driving shaft is provided with in casing, driving shaft one end is installed in gear type gear ring, the other end is installed in rear driving mechanical axis, and gear type gear ring is installed in casing, rear driving mechanical axis is installed in end cap, front wheel driving mechanical axis is installed in casing, forerunner's gear set is on front wheel driving mechanical axis, and forerunner's gear engages with the outer gear of gear type gear ring, by the transmission of power of gear type gear ring to forerunner's gear, forerunner's gear drives front wheel driving mechanical axis to rotate by spline again and outputs power to front drive axle, the sliding fixing frame of limit is installed on driving shaft, and the integrated sun gear of forerunner and the integrated sun gear of rear-guard are integrated on driving shaft, in addition, forerunner's planet wheel supporting component is identical with rear-guard planet wheel supporting component structure, forerunner's planet wheel is installed on the sliding fixing frame of limit by forerunner's planet wheel supporting component circumference is uniform, and engage with the inner ring gear of gear type gear ring, the integrated sun gear of forerunner while of forerunner's planet wheel, rear-guard planet wheel is installed on rear driving mechanical axis by rear-guard planet wheel supporting component circumference is uniform, and engages with the inner ring gear of limit cunning fixing frame, the integrated sun gear of rear-guard while of rear-guard planet wheel, and limited sliding projection is set between the sliding fixing frame of limit and casing, and the sliding projection of limit is arranged on and leftly determines projection and the right side is determined between projection, projection is determined on a left side and projection arranged in dislocation is determined on the right side, and at the sliding projection of limit, projection is determined on left side and the right side determines projection to be respectively arranged with groove, inclined-plane and boss, align with the groove center that projection is determined on the right side in the boss center that projection is determined on a left side.
2. planetary gear type projection according to claim 1 limit coaster is with interaxial differential, it is characterized in that, is provided with outside framework oil seal in casing, be set on driving shaft simultaneously.
3. planetary gear type projection according to claim 1 limit coaster is with interaxial differential, and it is characterized in that, be provided with forerunner's outside framework oil seal in casing, forerunner's outside framework oil seal is set on front wheel driving mechanical axis.
4. planetary gear type projection according to claim 1 limit coaster is with interaxial differential, and it is characterized in that, in casing, be also provided with the rear-guard outside framework oil seal for the sealing of rear driving mechanical axis dynamic rotary, rear-guard outside framework oil seal is set on rear driving mechanical axis.
5. planetary gear type projection according to claim 1 limit coaster is with interaxial differential, it is characterized in that, front wheel driving mechanical axis being provided with for carrying out spacing snap ring to forerunner's gear.
6. planetary gear type projection according to claim 1 limit coaster interaxial differential, it is characterized in that, forerunner's planet wheel supporting component comprises component slippage bearing, assembly screw and assembly back-up ring, assembly back-up ring interference fit is installed in forerunner's planet wheel, forerunner's planet wheel is loaded on assembly screw by component slippage bearing housing and dallies, assembly screw one end is installed on the sliding fixing frame of limit by screw threads for fastening, and the other end is set with assembly back-up ring.
7. planetary gear type projection according to claim 1 limit coaster is with interaxial differential, and it is characterized in that, the sliding projection of limit is anchored on cabinet wall by anti-skidding fastening screw trip bolt.
8. planetary gear type projection according to claim 1 limit coaster is with interaxial differential, and it is characterized in that, the sliding projection of limit is set on the sliding fixing frame of limit, and the sliding projection of limit and limit to slide fixing frame be that spline gaps coordinates and installs.
9. planetary gear type projection limit coaster according to claims 1 to 8 interaxial differential, it is characterized in that, without normal vehicle operation under the effect of external motion resistance, driving shaft is rotated counterclockwise under powered attendant-controlled wheelchairs driving, and drive forerunner's planet wheel to rotate by the integrated sun gear of forerunner, drive rear-guard planet wheel to rotate by the integrated sun gear of rear-guard, and under the effect having external motion resistance, forerunner's planet wheel impels the sliding fixing frame of limit to be rotated counterclockwise trend by forerunner's planet wheel supporting component, and rear-guard planet wheel impels the sliding fixing frame of limit to turn clockwise trend by rear-guard planet wheel supporting component, now, rear-guard planet wheel is contrary to limitting the force direction of sliding fixing frame with forerunner's planet wheel to the active force of the sliding fixing frame of limit, when active force equal and opposite in direction, the sliding fixing frame of limit keeps geo-stationary, forerunner's planet wheel and rear-guard planet wheel indifferential Power output, when active force differs in size, the sliding fixing frame of limit produces relative movement, the power of one end is flowed to the other end, to realize shaft space difference speed.
10. planetary gear type projection according to claim 9 limit coaster interaxial differential, it is characterized in that, when normal differential drives, the sliding projection of limit that the rotational speed of the sliding fixing frame of limit is not enough to make to be driven to rotate and a left side are determined projection and the right side and are determined projection effect and produce and block; When differential mechanism one end, ransaxle is blocked, and the other end occur in driving process skid time, engine power is constant, under the driving shaft driving effect that rotating speed is high, the rotating speed of the sliding fixing frame of limit also increases, when rotating speed reach the sliding projection of limit and a left side determine projection and the right side determine the retardance lowest limit speed of projection time, left determine projection and the right side and determine projection and produce reduction of speed to limitting the effect of cunning projection, reduce the rotating speed of the sliding fixing frame of limit instantaneously, controlled, within the scope of setting limit speed, to play the effect that limit is sliding.
CN201410360331.6A 2014-07-25 2014-07-25 Planetary gear type convex block slip limiting inter-axle differential for automobile Expired - Fee Related CN104088983B (en)

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IT1224692B (en) * 1988-07-27 1990-10-18 C G C Compagnia Generale Compo LIMITED SLIP DIFFERENTIAL DEVICE
JP4980786B2 (en) * 2007-05-15 2012-07-18 富士重工業株式会社 Vehicle differential device
CN101786416B (en) * 2010-03-19 2012-12-26 薛建南 Electric vehicle deceleration and differential integrated rear axle assembly
CN103234018A (en) * 2013-05-16 2013-08-07 杨洋 Active differential mechanism
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