CN201002514Y

CN201002514Y - Overrunning clutch type multi-bridge actuating mechanism

Info

Publication number: CN201002514Y
Application number: CNU2007200932586U
Authority: CN
Inventors: 方显忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-02
Filing date: 2007-02-02
Publication date: 2008-01-09
Anticipated expiration: 2017-02-02

Abstract

The utility model refers to a multi axle driving system for an walking machinery, which is especially suitable for a multi-axle driving mechanism of the vehicle nWD overrunning clutch type. The mechanism adopts an overrunning clutch and a chain driving to realize the multi axle nWD mode. The mechanism is composed of a driving shaft, a chain pulley, a chain and an overrunning clutch. Power of a driving shaft (14) is transferred to a driving wheel (9) by a chain pulley (13), a chain (12), a chain pulley (5) and overrunning clutches (4, 6). The overrunning clutch and the chain are used to fulfill the purpose of driving multi axles simultaneously. Within these modes of 4WD, 6WD and 8WD that can be realized by the utility model, the multi-axle driving mechanism realizes the short-time nWD mode by combining the chain and the overrunning clutch to simplify the chassis structures of nWD mode vehicles.

Description

Super-clutch type multi-bridge driving mechanism

Technical field

Many bridges that the utility model relates to a kind of walking machine drive, and are particularly useful for automobile-used nWD (being the n wheel drive) mode, and this mechanism adopts overriding clutch and chain drive to realize the nWD mode of many bridges.

Background technology

For improving cross country power, automobile adopts four wheel drive mode (4WD), perhaps increases chassis and ground-surface ground Clearance.Four wheel drive and two-wheel drive are compared, though drive wheels has only increased by one times, difficulty technically will increase doubly a lot.For four wheel drive, mutual interference problem between the brake phenomenon of necessary solution sharply turning and the front and back wheel.Solve top problem, must between two drive wheels of each bridge diff will be installed, diff in the middle of also will installing between bridge and the bridge.After middle diff has been installed, a shortcoming appears again, in case certain drive wheel skid, therefore the propulsive effort meeting total loss of other each wheels also will all will add anti-skidding mechanism on each diff, diff is all changed becomes anti-skid final drive.Increase anti-skid final drive and not only made chassis structure become complicated later on, also improved the manufacturing cost of automobile simultaneously greatly.4WD has increased a lot of difficulties than 2WD technically, if make automobile further improve carrying capacity, realizes 6WD, 8WD structure, and it is extremely complicated that the structure of its car chassis can become.

Summary of the invention

The purpose of this utility model is to overcome the above-mentioned shortcoming that prior art is in, and a kind of super-clutch type multi-bridge driving mechanism is provided, and is particularly useful for the nWD mode of automobile.In realizing modes such as 4WD, the 6WD of automobile, 8WD, this multi-bridge driving mechanism utilizes chain and the overriding clutch realization transmission of power that combines, though do not realize full-time nWD mode fully, has improved cross country power.

Organization plan of the present utility model 1 is described as follows in conjunction with the accompanying drawings:

The power of axle drive shaft 14 sends power to drive wheel 9 through sprocket wheel 13, chain 12, sprocket wheel 5 and overriding clutch 4,6.Utilize overriding clutch and chain to realize driving simultaneously the purpose of many bridges.

A kind of super-clutch type multi-bridge driving mechanism, by axle drive shaft, sprocket wheel, chain and overriding clutch are formed, on the said axle drive shaft 14 sprocket wheel 13 is housed, overriding clutch 4 is housed on half drive axle, 6 and sprocket wheel 5, sprocket wheel 5 is contained in two overriding clutchs 4, on the clutch spindle 3 in the middle of 6, connect by chain 12 between sprocket wheel 13 and the sprocket wheel 5, left side cover 24 and right cover 23 are housed on the sprocket wheel 5, sprocket wheel 5 both can rotate around clutch spindle 3, also can stir vertically and horizontally slip, by the cover of the left side on it 24 and right cover 23 and cooresponding overriding clutch 4 by

shift fork

22,6 outer shroud connects.

Said half drive axle all adopts breakaway-element bridge and movable joint type structure, adapted independent suspension.

The transmission of power of said each half drive axle all must transmit through overriding

clutch

4,6, every increase by one and half drive axles, and then corresponding

increase overriding clutch

4,6, the number of said half drive axle can increase number or is contained on the axle drive shaft 14 according to type of drive.

Left side cover 24 engagements of said overriding clutch 6 and sprocket wheel 5 realize the working direction transmission of power; Right side cover 23 engagements of overriding clutch 4 and sprocket wheel 5 realize the direction of retreat transmission of power.

Said axle drive shaft 14 can be arranged in the front or the back of any one bridge, also can be arranged on any one bridge.

The beneficial effects of the utility model are: simplified the chassis structure of nWD mode automobile, particularly to the drive configuration of 6WD, 8WD automobile simplify more obvious.With tradition in short-term the nWD mode compare, low cost of manufacture simple in structure, the modes such as 6WD, 8WD that realize easily drive automobile.Because all drive axles all adopt breakaway-element bridge and movable joint type structure, both realized easily that many bridges turned to, reduce turn radius, there has not been the middle axle housing of beam front axle again, increased chassis and ground-surface road clearance.

Description of drawings

Figure-14WD overriding clutch drive mechanism scheme drawing.

The independent suspension structure and the transmission of power direction of figure-2 half drive axles change scheme drawing.

Figure-3 axle drive shafts and chain sprocket structure scheme drawing.

Figure-4 axle drive shafts are not arranged in 6WD overriding clutch drive mechanism scheme drawing on the bridge.

Figure-5 axle drive shafts are arranged in 6WD overriding clutch drive mechanism scheme drawing on the bridge.

Figure-6 overriding clutch transmission control structure scheme drawings.

The overriding clutch and the chain 6WD drive mechanism scheme drawing of figure-7 single difies.

Universal joint 8-inner shaft 9-turns to the outer universal joint 12-chain 13-sprocket wheel 14-driving shaft 15-driving gear 16-tire of the outer semiaxis 11-of driving wheel 10-and the upper ball stud 20-top link 21-planar contact pair of ground contact center point 17-tire 18-knuckle housing 19-to support the interior left cover of the universal joint 29-outer driving shaft 30-freewheel clutch 31-freewheel clutch 32-terminal pad 33-spline adapter sleeve 34-sprocket wheel right cover 35-sprocket wheel 36-differential mechanism of ball stud 27-sprocket wheel driving lever 28-under the left cover of the 22-sprocket wheel shift fork 23-sprocket wheel right cover 24-sprocket wheel 25-lower swing arm 26-in the 1-speed changer 2-engine 3-clutch shaft 4-freewheel clutch 5-sprocket wheel 6-freewheel clutch 7-

The specific embodiment

Further specify particular content machine works process of the present utility model below in conjunction with the accompanying drawing illustrated embodiment:

Embodiment 1

Shown in the accompanying drawing 1, from driving engine 2 power is passed to axle drive shaft 14 through driving gear 15, give drive wheels 9 transmission of power through sprocket wheel 13, chain 12, power-

transfer clutch

4,6, universal-joint 7 etc. then, because this symmetrical, left-right symmetric in drive configuration front and back can realize four wheel drive.Car negotiation of bends or because of tire radius not simultaneously, can cause four operating speves between the wheel to have nothing in common with each other, power-

transfer clutch

4,6 allows in motion process, it rotates faster, and wheel freely surmounts rotation, eliminate the mutual interference of rolling between the wheel, avoid occurring between the wheel unnecessary subsidiary load.

The structure of half drive axle and transmission direction mode are as shown in Figure 2, power from drive sprocket 13 passes to sprocket wheel 5 through chain 12, sprocket wheel 5 is installed in the middle of two power-

transfer clutchs

4,6, and sprocket wheel 5 both can rotate around axle 3, also can horizontally slip vertically.Left side cover 24 and right cover 23 are arranged on the sprocket wheel 5, shift fork 22 is stirred sprocket wheel 5 to illustrating left when sliding, left side cover 24 is connected with the outer shroud of power-transfer clutch 6, the power of sprocket wheel 5 passes to axle 3 through power-transfer clutch 6, rotate through 9 positive dirctions such as universal-joint 7 drive wheels such as part such as grade, and power-transfer clutch 6 allows wheel 9 to surmount rotation to positive dirction.During reversing, shift fork 22 is stirred sprocket wheel 5 when the diagram right is slided, and right cover 23 is connected with the outer shroud of power-transfer clutch 4, and opposing torque is passed to axle 3 through power-transfer clutch 4, make wheel 9 counter-rotation through universal-joint 7 parts such as grade, and power-transfer clutch 4 allows wheel 9 to surmount rotation to reversing sense.Structure and transmission direction mode adopt the sliding type spline to connect as shown in Figure 3 between axle drive shaft 14 and the sprocket wheel 13, and driving lever 27 control sprocket wheels 13 horizontally slip on axle drive shaft 14 vertically, guarantee parallel same moved further between sprocket wheel 5 and the sprocket wheel 13.Driving lever 27 and shift fork 22 can link with the shifter bar of change-speed box, only make the right side cover 23 and the overriding clutch 4 of sprocket wheel 5 be in engage position when retreating retaining, the unnecessary subsidiary load of appearance between the wheel when eliminating reversing; Shifter bar makes the left side cover 24 and the overriding clutch 6 of wheel 5 be in engage position when other position, unnecessary subsidiary load occurs between the wheel when elimination car advances.

Because two wheels of the same side link together with chain, when avoiding wheel 9 to turn to, generation is around the rotation of outer semiaxis 10, this rotation meeting has nothing in common with each other in rotation direction or velocity of rotation size by

sprocket wheel

5,13 and chain 12 and other wheel of homonymy and interferes, and therefore requires the line of centres of two ball ends 18,26 to contact center-point 16 with ground through tire.In addition for guaranteeing that wheel steering or suspension swing up and down the center that does not change universal-joint 7, the center that also requires universal-joint 11 is on the line of centres of two ball ends 18,26, and the center of universal-joint 7 supports at two planar contact pairs on 21 the line of centres, and inner shaft 8 is parallel with pumping

arm action

20,25.

Embodiment 2

Below in conjunction with shown in the accompanying drawing 4 utility model embodiment 2 is further specified:

Embodiment 2 is with the difference of embodiment 1: drive axle of increase and chain 12 directly become the 6WD mode on the 4WD mode.The drive torque size of six wheels depends on the actual speed of each wheel.Because power-

transfer clutch

4,6 surmounts effect, also can realize illustrating the mode of 6WD in short-term of automobile.Can be when negotiation of bends between six wheels of this car because turn radius is different, make rotating speed difference between the wheel, even when straight-line travelling, also can make between the wheel rotating speed slightly inequality because of the difference of tire radius, under any condition, this 6WD mode can be between wheel drive to six wheel drive automatically regulating drive wheels number in the scope.Its mode is similar with whip-slow-cow, and it is maximum that the slowest ox that walks in six farm cattle is whipped number of times.The speed of that wheel is the slowest, and the drive torque that wheel is subjected to is also just big more, and by the time of moment loading also long, and actual rotation speed faster wheel can automatically surmount rotation.If under the less surface condition of friction coefficient, the wheel that is subjected to big moment occurs driving the number that can increase drive wheels when skidding gradually, also can obtain 6WD effect preferably.The advantage of this structure is as five wheels simultaneously during skid, and the 6th wheel can also keep maximum drive torque, the predicament that automobile is broken away from cast anchor.

Embodiment 3

Below in conjunction with accompanying drawing 5 with shown in Figure 6 the utility model embodiment 3 is further specified:

Embodiment 3 is with the difference of embodiment 1: increase a drive axle and directly become the 6WD mode on the 4WD mode.The characteristics of present embodiment are: half drive axle directly is added in the axle head of axle drive shaft 14.Structure and transmission direction mode adopt the sliding type spline to connect as shown in Figure 6 between its axle drive shaft 14 and the sprocket wheel 13.Overlap 35,34 about sprocket wheel 13, terminal pad 32, spline adapter sleeve 33 and sprocket wheel and constitute a part.Adopt free-sliding spline to connect transferring power between spline adapter sleeve 33 and the axle drive shaft 14, and be supported on the axle 14, outer driving shaft 29 and two power-transfer clutchs 30,31 constitute a part simultaneously, and be supported on the outer diameter of axle of spline adapter sleeve 33, both can rotate, also can horizontally slip vertically around the outer axle journal of adapter sleeve 33.Driving lever 27 can be stirred sprocket wheel 13 to illustrating left when sliding, sprocket wheel left side cover 35 is connected with power-transfer clutch 30, the power of sprocket wheel 13 passes to universal-joint 28 positive dirctions such as drive wheels such as part such as grade through power-transfer clutch 30 and rotates, when driving lever 27 is stirred sprocket wheel 13 when the diagram right is slided, the right cover of sprocket wheel 34 is connected with power-transfer clutch 31, opposing torque is passed to universal-joint 28 parts such as grade through power-transfer clutch 31 make the wheel counter-rotation.

Embodiment 4

Below in conjunction with shown in the accompanying drawing 7 the utility model embodiment 4 is further specified:

The characteristics of embodiment 4 are: from driving engine 2 power is passed to axle drive shaft 14 through diff 36.And then give six wheels transmission of power.Benefit is under any condition, and this structure can guarantee that at least both sides respectively have a wheel to drive simultaneously, unless three wheels of the same side skid simultaneously.

Claims

1, a kind of super-clutch type multi-bridge driving mechanism, by axle drive shaft, sprocket wheel, chain and overriding clutch are formed, it is characterized in that being equipped with on the said axle drive shaft (14) sprocket wheel (13), overriding clutch (4 is housed on half drive axle, 6) and sprocket wheel (5), sprocket wheel (5) is contained in two overriding clutchs (4,6) on Zhong Jian the clutch spindle (3), connect by chain (12) between sprocket wheel (13) and the sprocket wheel (5), left side cover (24) and right cover (23) are housed on the sprocket wheel (5), sprocket wheel (5) both can rotate around clutch spindle (3), also can stir vertically and horizontally slip, by the cover of the left side on it (24) and right cover (23) and cooresponding overriding clutch (4 by shift fork (22), 6) outer shroud connects.

2, super-clutch type multi-bridge driving mechanism according to claim 1 is characterized in that said half drive axle all adopts breakaway-element bridge and movable joint type structure, adapted independent suspension.

3, super-clutch type multi-bridge driving mechanism according to claim 1 and 2, the transmission of power that it is characterized in that said each half drive axle all must transmit through overriding clutch (4,6), every increase by one and half drive axles, then corresponding increase overriding clutch (4,6), the number of said half drive axle can increase number or is contained on the axle drive shaft (14) according to type of drive.

4, super-clutch type multi-bridge driving mechanism according to claim 1 is characterized in that left side cover (24) engagement of said overriding clutch (6) and sprocket wheel (5) realizes the working direction transmission of power; Right side cover (23) engagement of overriding clutch (4) and sprocket wheel (5) realizes the direction of retreat transmission of power.

5, super-clutch type multi-bridge driving mechanism according to claim 1 is characterized in that said axle drive shaft (14) can be arranged in the front or the back of any one bridge, also can be arranged on any one bridge.