CN108679172A - A kind of coaxial straight line gear - Google Patents
A kind of coaxial straight line gear Download PDFInfo
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- CN108679172A CN108679172A CN201810790312.5A CN201810790312A CN108679172A CN 108679172 A CN108679172 A CN 108679172A CN 201810790312 A CN201810790312 A CN 201810790312A CN 108679172 A CN108679172 A CN 108679172A
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Classifications
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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/10—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with one or more one-way clutches as an essential feature
Abstract
The invention discloses a kind of coaxial straight line gear, including input shaft, output shaft, transition axis and low-speed shaft, input shaft is equipped with the first transmission gear and unidirectional cluster gear；The front end of input shaft is located in unidirectional cluster gear, and output shaft is located in the front end face of unidirectional cluster gear, coaxial with input shaft；Transition axis is equipped with transition gear；Low-speed shaft is equipped with the second transmission gear and ratchet；Transition gear is engaged with the first, second transmission gear respectively, and ratchet is engaged with unidirectional cluster gear, and effective direction of rotation of the two is opposite；Unidirectional cluster gear and the second transmission gear are achieved a fixed connection by being coaxially clamped disk with input shaft and bottom gear transmission shaft respectively.The present invention makes full use of the motor positive and inverse principle of equal effects, carries out Gearbox design in coaxial rectilinear direction by the way of two one-way wheel two-way clutch, not only can directly be merged with various motors, can also solve the problems, such as traditional off-axis gear abnormity size.
Description
Technical field
The invention belongs to gear technical fields, and in particular to a kind of dedicated coaxial straight line gear of electric vehicle.
Background technology
Electric vehicle will become worldwide new traffic tool, and the model of various electric vehicles is too numerous to mention.But
All electric vehicles all have a problem that, are just whether to need to make gearbox.So far, including famous tesla is electric
The mode that electrical automobile, Toyota's electric vehicle are all made of motor direct driving carries out power drive.The characteristics of motor direct driving mode, exists
In, directly driven with high-revolving motor or by reduction ratio drive Automobile drive, its advantage is that given full play to motor height
The characteristic of rotating speed, as the motor speed of tesla's electric vehicle is up to 12000 rpms.
It is well known, however, that although motor has a slow-speed of revolution large torque electrical characteristics, but rotating speed reach its rated speed it
Before, it is extremely inefficient.On the other hand, with the raising of motor speed, motor outputting torsion needs the electric current of bigger to realize.Also
It is to say, motor can not possibly look after the energy conversion efficiency in slow-speed of revolution section and high speed stage simultaneously.With tesla's electric vehicle
For, using the pattern of low load with strong power, this just brings following two problems：
First, energy consumption is not optimal a little, by taking tesla as an example, although 100 kilometers can be accelerated at three seconds or so,
The efficiency of this section of motor is exactly extremely low, and efficiency is about 30% ~ 40%, that is to say, that in order to look after low-speed performance, largely
Energy be wasted.
Secondly, or by taking tesla as an example, which is more than after 120 kilometers, and what electric current also linearly rose becomes
Gesture, that is to say, that its optimal economic travel speed 30 ~ 100 kilometers per hour between.
It can illustrate above, electric vehicle equally needs gear, and according to various empirical datas channel syndrome
It is bright, it is only necessary to which that two gear speed changes can perfectly optimize electric vehicle relatively, only so far, go out not yet in global range
Now it is suitble to the gearbox of electric vehicle.Due to not consumed under electric vehicle dead ship condition, thus also just without idling, neutral gear it
The demand of class, equally also there is no need to carry out the research of clutch structure, also exactly this reason, leads to the speed change of electric vehicle
Case research becomes the global problem for being only second to dynamic lithium battery.And the control method of electric vehicle and traditional oils vehicle are completely not
Together, not only uneconomical if using traditional oily vehicle gearbox come for electric vehicle, it can also cause the confusion in control.
Invention content
The purpose of the present invention is to provide a kind of coaxial straight line gears, by the output of electric vehicle two-stage gear
The input shaft of axis and motor realizes coaxial linear design, not only can directly be merged with various motor, but also can solve to pass
Unite off-axis gear abnormity size the problem of and speed-change process in various clamping interim cards the problem of.
To reach above-mentioned technical purpose and effect, the invention is realized by the following technical scheme：
A kind of coaxial straight line gear, including shell, input shaft, output shaft, transition axis and low-speed shaft, the input
Axis, the transition axis and low-speed shaft are arranged parallel to each other in the housing two-by-two；The input shaft is connect with motor, can
Counterclockwise or clockwise bidirectional rotation is carried out with motor, the first transmission gear and unidirectional disjunctor tooth are arranged on the input shaft
Wheel, first transmission gear are fixedly connected with the input shaft；The unidirectional cluster gear is by the bearing that is set-located
Circle and gear jacket composition, the bearing inner race include bearing support and unilateral bearing arranged side by side, the gear jacket packet
Include the housing front gear to link together and housing backgear；The front end setting of the input shaft is in the bearing support and described
In unilateral bearing, the output shaft is arranged in the front end face of the housing front gear, is in a straight line with the input shaft；Institute
It states and is arranged with transition gear on transition axis, the transition gear is fixedly connected with the transition axis；It is covered on the low-speed shaft
Equipped with the second transmission gear and ratchet, second transmission gear is flexibly connected with the low-speed shaft, described unidirectional
The inner disc of gear is fixedly connected with the low-speed shaft；The transition gear respectively with first transmission gear and described
Two transmission gears engage, and the ratchet is engaged with the housing backgear of the unidirectional cluster gear, and the ratchet
It is opposite with effective direction of rotation of unidirectional cluster gear；The first coaxial card is arranged with by axial keyway on the input shaft
Disk is connect, the described first coaxial clamping disk not only can together be rotated with the input shaft, but also can be in axial keyway back and forth
Movement, the described first coaxial clamping disk are located at the rear side of the unidirectional cluster gear, and the described first coaxial clamping disk passes through axial direction
Move back and forth realization and the back-geared clamping of the housing or release, the gear jacket of the unidirectional cluster gear by with institute
The first clamping realization of coaxial clamping disk and being fixedly connected for the input shaft are stated, can be rotated together with the input shaft；Institute
It states and the second coaxial clamping disk is arranged with by axial keyway on low-speed shaft, the described second coaxial clamping disk not only can be with institute
It states low-speed shaft to rotate together, and can be moved back and forth in axial keyway, the described second coaxial clamping disk is located at described
The rear side of second transmission gear, the described second coaxial clamping disk move back and forth realization and second transmission gear by axial
Clamping or release, second transmission gear by with described second it is coaxial clamping disk clamping realize with the low speed rotation
Axis is fixedly connected, and can be rotated together with the low-speed shaft.
Further, the output shaft and the input shaft are coaxial.
Further, the diameter of first transmission gear is less than the diameter of the housing front gear, the housing nipper
The diameter of wheel is less than the back-geared diameter of the housing；The diameter of first transmission gear is less than the straight of the transition gear
Diameter, the diameter of the transition gear are less than the diameter of second transmission gear, and the diameter of the ratchet is less than described the
The diameter of two transmission gears；The sum of first transmission gear and the radius of second transmission gear are more than tooth after the housing
The sum of the radius of wheel and the ratchet.
Further, it is respectively set on rear side of the front side of the described first coaxial clamping disk and the second coaxial clamping disk
It is described there are one for attracting the described first coaxial clamping disk and the second coaxial clamping dish axle to the solenoid valve moved back and forth
First coaxial clamping disk and the second coaxial clamping disk are realized and the unidirectional disjunctor by the opening and closing of corresponding solenoid valve respectively
The clamping or release of gear gear jacket and second transmission gear.
Further, in order to meet the needs of electric vehicle reverses gear, it is provided with one in the shell and is put down with the input shaft
Capable reverse gear axis is arranged with third transmission gear and the 4th transmission gear, the third transmission on the reverse gear axis
Gear is flexibly connected with the reverse gear axis, and the 4th transmission gear is fixedly connected with the reverse gear axis；Described
Three transmission gears are engaged with first transmission gear, the housing nipper of the 4th transmission gear and the unidirectional cluster gear
Wheel engagement；It is coaxially clamped disk for being clamped the third of the third transmission gear there are one being also arranged on the reverse gear axis,
The connection type of the third transmission gear is identical as the described first coaxial clamping disk and the second coaxial clamping disk, and described
Three coaxial clamping disks are located at the rear side of the third transmission gear, and the third transmission gear with the third by being coaxially clamped
The clamping realization of disk and being fixedly connected for the reverse gear axis, can rotate together with the reverse gear axis.
Further, the third is coaxially clamped the rear side setting of disk there are one for attracting the third to be coaxially clamped disk
The solenoid valve axially moved back and forth, the third are coaxially clamped disk and are realized and the third driving cog by the opening and closing of the solenoid valve
The clamping or release of wheel.
Further, the diameter of the third transmission gear is more than the diameter of first transmission gear, and the described 4th passes
The diameter of moving gear is less than the diameter of third transmission gear, and the radius of first transmission gear and the third transmission gear
The sum of be equal to the sum of the radius of the 4th transmission gear and the housing front gear, be conducive to freely to adjust speed ratio in this way and set
Meter.
Further, the ratchet include unilateral bearing inner disc, retainer bearing inner disc, gear outer ring, ball and
Roller；The unilateral bearing inner disc and the retainer bearing inner disc are arranged side by side in an axial direction, and the gear outer ring is sheathed on institute
It states except unilateral bearing inner disc and the retainer bearing inner disc, several is evenly equipped on the outer wall of the retainer bearing inner disc
The ball grooves along the circumferential direction arranged are each respectively provided in the ball grooves there are one the ball, and the sphere diameter of the ball omits
More than the depth of the ball grooves, the circumferential inner wall that the ball exposes the part and the gear outer ring of the ball grooves connects
It touches；There are gap, the outer walls of the unilateral bearing inner disc for the outer wall of the unilateral bearing inner disc and the inner wall of the gear outer ring
On be evenly equipped with several wedge grooves being along the circumferential direction collectively aligned, each wedge groove in the circumference of the gear outer ring
It is respectively formed a wedge cavities between wall, is respectively provided with that there are one the rollers in each wedge cavities.
Further, the wedge groove by positioned at its stub end arc-shaped concave and positioned at the straight slope group of its small head end
At.
Further, when the roller is located at the stub end of the wedge cavities, the roller and the gear outer ring
Inner wall is clearance fit, and when the roller is located at the small head end of the wedge cavities, the roller is interior with the gear outer ring
Wall is interference fit.
The present invention utilizes motor positive and inverse principle, while by the way of two one-way wheel two-way clutch, by electric vehicle
The output shaft of two-stage gear and the input shaft of motor realize coaxial linear design.Assuming that effective direction of rotation of ratchet
For clockwise, effective direction of rotation of unidirectional cluster gear is counter clockwise direction, and output shaft rotates to be vehicle counterclockwise
Advance, output shaft clockwise turns to vehicle rollback, and operation principle of the invention is described below：
1, when electric vehicle needs low speed to move ahead, controller controls corresponding solenoid valve respectively, makes the first coaxial clamping disk and list
It is in disengaged position to the gear jacket of cluster gear, makes the second coaxial clamping disk and the second transmission gear in clamped condition, makes the
Three coaxial clamping disks and the third transmission gear are in disengaged position；Motor driving input shaft rotates clockwise, at this time input shaft
The first transmission gear is driven to rotate clockwise together, and input shaft is then equivalent to inside unidirectional cluster gear and dallies, first passes
On the one hand moving gear drives transition gear to rotate counterclockwise, on the other hand drive third transmission gear in reverse gear axis overhead
Turn, transition gear drives bottom gear transmission shaft to rotate clockwise by the second transmission gear, the band clockwise of bottom gear transmission shaft
Dynamic ratchet locks and carries out effectively rotation clockwise, ratchet and then the housing backgear band by unidirectional cluster gear
Dynamic entire unidirectional cluster gear rotates counterclockwise, to finally output shaft be driven to rotate counterclockwise, carries out slow-speed of revolution output, realizes
The low-speed forward of electric vehicle.
2, when electric vehicle needs shift to high forward from low speed, controller controls motor and cuts from rotating clockwise first
It is changed to rotation counterclockwise, when rotating speed counterclockwise and the output shaft rotating speed counterclockwise of input shaft are consistent, controller passes through control pair
The solenoid valve answered so that the gear jacket of the first coaxial clamping disk and unidirectional cluster gear is in clamped condition, and second at this time is same
It is in clamped condition that axis, which is clamped disk and the second transmission gear still, and third, which is coaxially clamped disk and is remained on the third transmission gear, is in
Disengaged position, input shaft then directly drive output shaft to be rotated counterclockwise together, carry out high rotating speed by unidirectional cluster gear
Output, realizes advancing at utmost speed for electric vehicle.At the same time, although the first transmission gear can pass through transition gear and the second driving cog
Wheel drive bottom gear transmission shaft rotated counterclockwise, but due to effective transmission direction of rotation of ratchet be it is clockwise, because
This bottom gear transmission shaft is equivalent to dally in ratchet, not to uniline cluster gear rotate counterclockwise to be formed it is dry
It relates to.
3, when electric vehicle needs reversing, controller by controlling corresponding solenoid valve, makes the first coaxial clamping disk respectively
Gear jacket with unidirectional cluster gear is in disengaged position, makes the second coaxial clamping disk and the separated state of the second transmission gear,
It is in clamped condition so that third is coaxially clamped disk with third transmission gear.Motor driving input shaft rotates clockwise, due to unidirectionally connecting
Effective direction of rotation of body gear is counterclockwise, therefore input shaft is equivalent to and dallies in unidirectional cluster gear, and second is coaxial
It is clamped disk and the second transmission gear is detached from, therefore input shaft drives the second transmission gear in bottom gear transmission shaft by transition gear
Upper idle running, at this time input shaft only by third transmission gear, reverse gear axis drive the 4th transmission gear rotated counterclockwise,
4th transmission gear drives entire unidirectional cluster gear to rotate clockwise by the housing front gear of unidirectional cluster gear in turn, from
And output shaft is finally driven to rotate clockwise, slow-speed of revolution output is carried out, realizes the low-reverse of electric vehicle.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention proposes a kind of design principle and control principle of the special coaxial straight line gear of electric vehicle, makes full use of electricity
The machine positive and negative rotation principle of equal effects, while by the way of two one-way wheel two-way clutch, by the defeated of electric vehicle two-stage gear
The input shaft of shaft and motor realizes coaxial linear design.The gear of the present invention not only can directly melt with various motors
The problem of closing, also solving traditional off-axis gear abnormity size, overcomes in traditional off-axis gearbox speed-change process and exists
Various clamping interim cards the problem of.
The advantage of the invention is that simple in structure, reliability is high, widely applicable, covers electric low tricycle, electronic
The application demand of low-speed quadricycle, electric sightseeing vehicle and electric vehicle, meanwhile, of low cost, standard is unified, convenient for extensive
Production.
Two one-way wheels of the present invention rely on the process time of motor commutation during realizing two-way clutch（Generally
Less than 1 second）, the process that axis chases after gear is the process surpassed in reverse in the same direction more, transmits torsion naturally when realizing synchronous, thus
The pause and transition in rhythm or melody sense that traditional gear occurs in shift process is not had, is particularly suitable for applications in the motor that transformation of speed is exceedingly fast
On.
The two stage speed change mechanism of the present invention can not only meet the efficiency covering of motor, and bottom gear can also amplify torsion
Power provides the boost phase power limit of low speed starting, alleviates the power pressure of battery.
Above description is only the general introduction of the technical program, in order to better understand the technical means of the present invention, and can
It is implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after coordinating attached drawing to be described in detail such as.This hair
Bright specific implementation mode is shown in detail by following embodiment and its attached drawing.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the positive structure schematic of the present invention；
Fig. 2 is the left side cross-sectional schematic diagram of the present invention；
Fig. 3 is that the present invention increases the positive structure schematic after reverse gear axis；
Fig. 4 is that the present invention increases the left side cross-sectional schematic diagram after reverse gear axis；
Fig. 5 is the schematic diagram of the retainer bearing inner disc side of ratchet of the present invention；
Fig. 6 is the schematic diagram of the unilateral bearing inner disc side of ratchet of the present invention；
Fig. 7 is the circumferential cross-section schematic diagram of ratchet of the present invention.
Specific implementation mode
It is below with reference to the accompanying drawings and in conjunction with the embodiments, next that the present invention will be described in detail.
Embodiment 1
It is described referring to Fig. 1 and Fig. 2, a kind of coaxial straight line gear, including shell 1, input shaft 2, output shaft 3,4 and of transition axis
Low-speed shaft 5, the input shaft 2, the transition axis 4 and low-speed shaft 5 are arranged parallel to each other two-by-two in the shell 1
In.
The input shaft 2 is connect with motor, and counterclockwise or clockwise bidirectional rotation, the input shaft can be carried out with motor
The first transmission gear 6 and unidirectional cluster gear are arranged on 2, first transmission gear 6 is fixedly connected with the input shaft 2.
The unidirectional cluster gear is made of the bearing inner race and gear jacket being set-located, and the bearing inner race includes being arranged side by side
Bearing support 7 and unilateral bearing 8, the gear jacket include the housing front gear 9 to link together and housing backgear 10.
The front end of the input shaft 2 is arranged in the bearing support 7 and the unilateral bearing 8, and the output shaft 3 is arranged
In the front end face of the housing front gear 9, with the input shaft 2 in a straight line and coaxial.It is arranged on the transition axis 4
Transition gear 11, the transition gear 11 are fixedly connected with the transition axis 4.The second biography is arranged on the low-speed shaft 5
Moving gear 12 and ratchet 13, second transmission gear 12 are flexibly connected with the low-speed shaft 5, the ratchet
13 inner disc is fixedly connected with the low-speed shaft 5.The transition gear 11 respectively with first transmission gear 6 and described
Second transmission gear 12 engages, and the ratchet 13 is engaged with the housing backgear 10 of the unidirectional cluster gear, and described
Ratchet 13 is opposite with effective direction of rotation of unidirectional cluster gear.
The diameter of first transmission gear 6 be less than the housing front gear 9 diameter, the housing front gear 9 it is straight
Diameter is less than the diameter of the housing backgear 10；The diameter of first transmission gear 6 is less than the diameter of the transition gear 11,
The diameter of the transition gear 11 is less than the diameter of second transmission gear 12, and the diameter of the ratchet 13 is less than described
The diameter of second transmission gear 12；The sum of first transmission gear 6 and the radius of second transmission gear 12 are more than described
The sum of the radius of housing backgear 10 and the ratchet 13 is conducive to freely adjust speed ratio design in this way.
First coaxial clamping disk 14, the described first coaxial clamping disk 14 are arranged with by axial keyway on the input shaft 2
It not only can together rotate, but also can be moved back and forth in axial keyway by a solenoid valve control, institute with the input shaft
The rear side that the first coaxial clamping disk 14 is located at the housing backgear 10 is stated, the solenoid valve is located at the described first coaxial clamping disk
14 front side, the described first coaxial clamping disk 14 are realized by the opening and closing of the solenoid valve outside the gear with the unidirectional cluster gear
The gear jacket of the clamping or release of set, the unidirectional cluster gear is realized by the clamping with the described first coaxial clamping disk 14
With being fixedly connected for the input shaft 2, can be rotated together with the input shaft 2.
Second coaxial clamping disk 15, the described second coaxial clamping are arranged with by axial keyway on the low-speed shaft 5
Disk 15 not only can together be rotated with the low-speed shaft 5, but also can be in axial keyway by a solenoid valve control
Backhaul dynamic, the described second coaxial clamping disk 15 is located at the rear side of second transmission gear 12, and the solenoid valve is positioned at described the
The rear side of two coaxial clamping disks 15, the described second coaxial clamping disk 15 is realized by the opening and closing of the solenoid valve to be driven with described second
The clamping or release of gear 12, second transmission gear 12 is realized by the clamping with the described second coaxial clamping disk 15 and institute
Being fixedly connected for low-speed shaft 5 is stated, can be rotated together with the low-speed shaft 5.
Further, referring to shown in Fig. 5-7, the ratchet 13 is including in unilateral bearing inner disc 20, retainer bearing
Disk 21, gear outer ring 22, ball 23 and roller 24；The unilateral bearing inner disc 20 and the retainer bearing inner disc 21 are in an axial direction
It is arranged side by side, the gear outer ring 22 is sheathed on except the unilateral bearing inner disc 20 and the retainer bearing inner disc 21, institute
It states and is evenly equipped with several ball grooves 25 along the circumferential direction arranged on the outer wall of retainer bearing inner disc 21, each ball grooves
It is respectively provided in 25 there are one the ball 23, the sphere diameter of the ball 23 is slightly larger than the depth of the ball grooves 25, the ball
23 parts for exposing the ball grooves 25 are contacted with the circumferential inner wall of the gear outer ring 22；Outside the unilateral bearing inner disc 20
The inner wall of wall and the gear outer ring 22 is evenly equipped with several circumferentially there are gap on the outer wall of the unilateral bearing inner disc 20
The wedge groove 26 that direction is collectively aligned, the wedge groove 26 by positioned at its stub end arc-shaped concave and positioned at the straight of its small head end
Line inclined-plane forms, and a wedge cavities is each respectively formed between the wedge groove 26 and the circumferential inner wall of the gear outer ring 22, often
The roller 24 there are one being respectively provided in a wedge cavities.When the roller 24 is located at the stub end of the wedge cavities, institute
It is clearance fit to state roller 24 and the inner wall of the gear outer ring 22, when the roller 24 is located at the small head end of the wedge cavities
When, the inner wall of the roller 24 and the gear outer ring 22 is interference fit.
Since the gear of above-described embodiment does not have a gear reversing function, the gear of above-described embodiment only can be with
Meet the use of three-wheeled electric vehicle or the four-wheel electric motor car without car-backing function.
Embodiment 2
It is described outer on the basis of embodiment 1 shown in Fig. 3 and Fig. 4, and in order to meet the needs of four-wheel electric motor car reverses gear
It is additionally provided with a reverse gear axis 16 parallel with the input shaft 2 in shell 1, third is arranged on the reverse gear axis 16
Transmission gear 17 and the 4th transmission gear 18, the third transmission gear 17 is flexibly connected with the reverse gear axis 16, described
4th transmission gear 18 is fixedly connected with the reverse gear axis 16.The third transmission gear 17 and first transmission gear
6 engagements, the 4th transmission gear 18 are engaged with the housing front gear 9 of the unidirectional cluster gear.The third transmission gear
17 diameter is more than the diameter of first transmission gear 6, and the diameter of the 4th transmission gear 18 is less than third transmission gear
17 diameter, and the sum of first transmission gear 6 and the radius of the third transmission gear 17 are equal to the 4th driving cog
The sum of the radius of wheel 18 and the housing front gear.
Third is arranged with by keyway on the reverse gear axis 16 and is coaxially clamped disk 19, with the reverse gear axis 16 1
With rotation, and the third is coaxially clamped disk 19 and can be moved back and forth in keyway by a solenoid valve control, the third
Coaxial clamping disk 19 is located at the rear side of the third transmission gear 17, and the solenoid valve is located at the third and is coaxially clamped disk 19
Front side, the third are coaxially clamped clamping or pine of opening and closing realization of the disk 19 by the solenoid valve with the third transmission gear 17
It opens, the third transmission gear 17 is realized and the reverse gear axis 16 by being coaxially clamped the clamping of disk 19 with the third
It is fixedly connected, can be rotated together with the reverse gear axis 16.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification made by all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of coaxial straight line gear, it is characterised in that：Including shell（1）, input shaft（2）, output shaft（3）, transition axis
（4）And low-speed shaft（5）, the input shaft（2）, the transition axis（4）And low-speed shaft（5）It is arranged parallel to each other two-by-two
In the shell（1）In；The input shaft（2）On be arranged with the first transmission gear（6）It is passed with unidirectional cluster gear, described first
Moving gear（6）With the input shaft（2）It is fixedly connected；The unidirectional cluster gear is by the bearing inner race and gear that are set-located
Housing forms, and the bearing inner race includes bearing support arranged side by side（7）And unilateral bearing（8）, the gear jacket includes
The housing front gear to link together（9）With housing backgear（10）；The input shaft（2）Front end be arranged in the support shaft
It holds（7）With the unilateral bearing（8）In, the output shaft（3）It is arranged in the housing front gear（9）Front end face on, with
The input shaft（2）In a straight line；The transition axis（4）On be arranged with transition gear（11）, the transition gear（11）With institute
State transition axis（4）It is fixedly connected；The low-speed shaft（5）On be arranged with the second transmission gear（12）And ratchet（13）,
Second transmission gear（12）With the low-speed shaft（5）Flexible connection, the ratchet（13）Inner disc with it is described
Low-speed shaft（5）It is fixedly connected；The transition gear（11）Respectively with first transmission gear（6）With second transmission
Gear（12）Engagement, the ratchet（13）With the housing backgear of the unidirectional cluster gear（10）Engagement, and the list
To gear（13）It is opposite with effective direction of rotation of unidirectional cluster gear；The input shaft（2）On be also arranged there are one card
Connect the coaxially clamping disk of controllable first（14）, the described first coaxial clamping disk（14）Positioned at the housing backgear（10）After
Side, the gear jacket of the unidirectional cluster gear by with the described first coaxial clamping disk（14）Clamping realize with the input
Axis（2）Be fixedly connected；The low-speed shaft（5）On be also arranged that there are one the second controllable coaxial clamping disks of clamping（15）,
Described second coaxial clamping disk（15）Positioned at second transmission gear（12）Rear side, second transmission gear（12）Pass through
With the described second coaxial clamping disk（15）Clamping realize with the low-speed shaft（5）Be fixedly connected.
2. coaxial straight line gear according to claim 1, it is characterised in that：The output shaft（3）With the input
Axis（2）Coaxially.
3. coaxial straight line gear according to claim 1, it is characterised in that：First transmission gear（6）It is straight
Diameter is less than the housing front gear（9）Diameter, the housing front gear（9）Diameter be less than the housing backgear（10）'s
Diameter；First transmission gear（6）Diameter be less than the transition gear（11）Diameter, the transition gear（11）It is straight
Diameter is less than second transmission gear（12）Diameter, the ratchet（13）Diameter be less than second transmission gear
（12）Diameter；First transmission gear（6）With second transmission gear（12）The sum of radius be more than the housing after
Gear（10）With the ratchet（13）The sum of radius.
4. coaxial straight line gear according to claim 1, it is characterised in that：Described first coaxial clamping disk（14）With
Described second coaxial clamping disk（15）Axially displaceably it is arranged respectively in the input shaft（2）With the low-speed shaft（5）
On, the described first coaxial clamping disk（14）With the described second coaxial clamping disk（15）It is realized respectively by the opening and closing of corresponding solenoid valve
Axial moves back and forth, the described first coaxial clamping disk（14）With the described second coaxial clamping disk（15）Respectively by it is axial come
Return is dynamic to be realized and the gear jacket of the unidirectional cluster gear and second transmission gear（12）Clamping or release.
5. coaxial straight line gear according to claim 1, it is characterised in that：The shell（1）In be provided with one
With the input shaft（2）Parallel reverse gear axis（16）, the reverse gear axis（16）On be arranged with third transmission gear
（17）With the 4th transmission gear（18）, the third transmission gear（17）With the reverse gear axis（16）Flexible connection, it is described
4th transmission gear（18）With the reverse gear axis（16）It is fixedly connected；The third transmission gear（17）It is passed with described first
Moving gear（6）Engagement, the 4th transmission gear（18）With the housing front gear of the unidirectional cluster gear（9）Engagement；It is described
Reverse gear axis（16）On be also arranged that there are one for being clamped the third transmission gear（17）Third be coaxially clamped disk（19）,
The third is coaxially clamped disk（19）Positioned at the third transmission gear（17）Rear side, the third transmission gear（17）Pass through
It is coaxially clamped disk with the third（19）Clamping realize with the reverse gear axis（16）Be fixedly connected.
6. coaxial straight line gear according to claim 5, it is characterised in that：The third is coaxially clamped disk（19）It can
It is axially movably arranged at the reverse gear axis（16）On, the third is coaxially clamped disk（19）It is real by the opening and closing of solenoid valve
Now axial moves back and forth, and the third is coaxially clamped disk（19）Move back and forth realization and the third driving cog by axial
Wheel（17）Clamping or release.
7. coaxial straight line gear according to claim 5, it is characterised in that：The third transmission gear（17）It is straight
Diameter is more than first transmission gear（6）Diameter, the 4th transmission gear（18）Diameter be less than third transmission gear
（17）Diameter, and first transmission gear（6）With the third transmission gear（17）The sum of radius be equal to the described 4th
Transmission gear（18）With the sum of the radius of the housing front gear.
8. coaxial straight line gear according to claim 1, it is characterised in that：The ratchet（13）Including unidirectional
Bearing inner disc（20）, retainer bearing inner disc（21）, gear outer ring（22）, ball（23）And roller（24）；The unilateral bearing
Inner disc（20）With the retainer bearing inner disc（21）It is arranged side by side in an axial direction, the gear outer ring（22）It is sheathed on described unidirectional
Bearing inner disc（20）With the retainer bearing inner disc（21）Except, the retainer bearing inner disc（21）Outer wall on be evenly equipped with
Several ball grooves along the circumferential direction arranged（25）, each ball grooves（25）The ball there are one being inside respectively provided with
（23）, the ball（23）Sphere diameter be slightly larger than the ball grooves（25）Depth, the ball（23）Expose the ball grooves
（25）Part and the gear outer ring（22）Circumferential inner wall contact；The unilateral bearing inner disc（20）Outer wall and the tooth
Take turns outer ring（22）Inner wall there are gap, the unilateral bearing inner discs（20）Outer wall on to be evenly equipped with several along the circumferential direction same
To the wedge groove of arrangement（26）, each wedge groove（26）With the gear outer ring（22）Circumferential inner wall between be respectively formed one
A wedge cavities, are respectively provided with that there are one the rollers in each wedge cavities（24）.
9. coaxial straight line gear according to claim 8, it is characterised in that：The wedge groove（26）It is big by being located at it
The arc-shaped concave of head end and positioned at its small head end straight slope form.
10. coaxial straight line gear according to claim 8, it is characterised in that：When the roller（24）Positioned at described
When the stub end of wedge cavities, the roller（24）With the gear outer ring（22）Inner wall be clearance fit, when the roller
（24）When positioned at the small head end of the wedge cavities, the roller（24）With the gear outer ring（22）Inner wall be interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790312.5A CN108679172A (en) | 2018-07-18 | 2018-07-18 | A kind of coaxial straight line gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790312.5A CN108679172A (en) | 2018-07-18 | 2018-07-18 | A kind of coaxial straight line gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108679172A true CN108679172A (en) | 2018-10-19 |
Family
ID=63814074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810790312.5A Pending CN108679172A (en) | 2018-07-18 | 2018-07-18 | A kind of coaxial straight line gear |
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| Country | Link |
|---|---|
| CN (1) | CN108679172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113040025A (en) * | 2021-04-06 | 2021-06-29 | 华北水利水电大学 | Siphon type solar power portable irrigation device and use method thereof |
-
2018
- 2018-07-18 CN CN201810790312.5A patent/CN108679172A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113040025A (en) * | 2021-04-06 | 2021-06-29 | 华北水利水电大学 | Siphon type solar power portable irrigation device and use method thereof |
| CN113040025B (en) * | 2021-04-06 | 2023-08-25 | 华北水利水电大学 | Siphon solar power portable irrigation device and application method thereof |
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