CN108443484A - The fast push button gearshift of tractor speed changer 12 and control method - Google Patents
The fast push button gearshift of tractor speed changer 12 and control method Download PDFInfo
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- CN108443484A CN108443484A CN201810610931.1A CN201810610931A CN108443484A CN 108443484 A CN108443484 A CN 108443484A CN 201810610931 A CN201810610931 A CN 201810610931A CN 108443484 A CN108443484 A CN 108443484A
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- gear
- low
- screw rod
- gears
- clutch
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/12—Range selector apparatus comprising push button devices
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight forward speeds
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0082—Transmissions for multiple ratios characterised by the number of reverse speeds
- F16H2200/0095—Transmissions for multiple ratios characterised by the number of reverse speeds the gear ratios comprising four reverse speeds
Abstract
A kind of 12 gear gearshift of tractor speed changer of present invention proposition and control method, mechanical gear shift operation is realized using the precession of servo motor lead-screw, the manipulation workload for reducing driver, improves the economy of fuel oil, also can be widely used to transmission for vehicles automatically controls work；Gearshift is made of secondary main transformer quick change blocking means, main transformer quick change blocking means and clutch on-off device；The fast low high gear gearshift of secondary main transformer and the cooperation of main transformer quick change blocking means, generate eight forward ranges；Secondary main transformer speed reverse gear gearshift and main transformer quick change blocking means cooperation, generate four retroversion gears；+ 1 gear of low gear=advance 1 is kept off, and+2 gears of low gear=advance 2 is kept off, and+3 gears of low gear=advance 3 is kept off, and+4 gears of low gear=advance 4 is kept off；+ 1 gear of high gear=advance 5 is kept off, and+2 gears of high gear=advance 6 is kept off, and+3 gears of high gear=advance 7 is kept off, and+4 gears of high gear=advance 8 is kept off；Reverse gear+1 gear=fall 1 gear, reverse gear+2 gear=fall 2 gear, reverse gear+3 gear=fall 3 gear, reverse gear+4 gear=fall 4 gear.
Description
Technical field
The present invention relates to a kind of tractor speed changer push button shift control apparatus, a kind of especially tractor speed changer 12
Gear gearshift and control method.
Background technology
In automobile industry, the shift performance quality of speed changer directly affects the fuel economy of automobile, smooth gear shifting
With riding comfort etc..Tradition machinery formula speed changer needs driver's shift hunting to meet dynamic property requirement, and shift hunting aggravates
The labor intensity of driver；And the quality of driver's driving technology has large effect to the performance of automobile.Existing
It is mechanical transmission mostly in the speed changer of tractor, efficiency is low.Complex road surface when driving, speed changes greatly, shift frequency
It is numerous, it increases driver and manipulates workload.In case of emergency, it is susceptible to clutch and the erroneous judgement of gas pedal, to lead
Accident rate is caused to rise.Current motor vehicle self shifter can be divided into hydraulic automatic speed variator and electronic automatic transmission.It is automatic to become
Fast device mainly have fluid torque-converter, planetary gear set, brake, clutch, hydraulic pump and solenoid valve block at, it is complicated,
And high-accuracy element is belonged to greatly, it is of high cost.The present invention realizes mechanical shift using the precession of stepper motor lead-screw
Operation, reduces the manipulation workload of driver, improves the economy of fuel oil, also can be widely used to the automatic of transmission for vehicles
Control work.
Invention content
The present invention manipulates complicated present situation for transmission for vehicles, proposes a kind of 12 fast push button shift of tractor speed changer
Control device and control method.
Scheme is used by patent of the present invention solves its technical problem：The fast push button shift of the tractor speed changer 12
Device is made of PBU pushbutton unit, control device and gearshift.It is characterized in that：The PBU pushbutton unit is kept off by main transformer speed 1,2 keep off,
3 gears, 4 gears and five trigger buttons of neutral gear, secondary main transformer speed high gear, neutral gear, are reversed gear and are emptied and keep off five trigger button groups at low gear
At.Each trigger button shows gear positions, green indicator light is installed in wherein main transformer speed gear position, secondary equipped with red or green indicator light
Main transformer speed gear position is installed by red indicating light.
The control device is made of power supply, PLC controller, switch and conducting wire.
The gearshift is made of secondary main transformer quick change blocking means, main transformer quick change blocking means and clutch on-off device.
The pair main transformer quick change blocking means are made of low high gear gearshift and the gearshift that reverses gear；The low high gear shift
Device is by low high motor, universal joint, screw rod, high gear limit switch, low high gear sliding block, low gear limit switch and screw rod fixing end group
At.The low high motor right end universal-joint, universal joint right end connecting screw, the threaded hole among screw rod and low high gear sliding block
Connection, when screw rod rotates, low high gear sliding block generates the displacement of horizontal direction, and low high gear sliding block is consolidated with low high gear shift fork, high gear
Limit switch is located at the left upper end of low high gear sliding block, and low gear limit switch is located at the upper right side of low high gear sliding block, screw rod and screw rod
Fixing end connects, and shift fork is connected by shift fork connecting hole.
The gearshift that reverses gear by the motor that reverses gear, universal joint, screw rod, the limit switch that reverses gear, reverse gear sliding block and screw rod is consolidated
Fixed end forms.Spiral shell among the motor right end universal-joint that reverses gear, universal joint right end connecting screw, screw rod and the sliding block that reverses gear
Pit connects, and the sliding block that reverses gear is consolidated with back fork, and the limit switch that reverses gear is located at the left upper end for the sliding block that reverses gear, and screw rod is solid with screw rod
Fixed end connects.
The main transformer quick change blocking means are made of 1-2 gearshifts and 3-4 gearshifts.The 1-2 gearshifts are by 1-2
Motor, universal joint, screw rod, 1 gear limit switch, 1-2 gears sliding block, 2 gear limit switches and screw rod fixing end composition, 1-2 motors are right
Universal-joint, universal joint right end connecting screw, the threaded hole that screw rod and 1-2 are kept off among sliding block is held to connect, 1-2 keeps off sliding block and 1-
2 gear shift fork consolidations, 1 gear limit switch are located at the left upper end of 1-2 gear sliding blocks, and 2 gear limit switches are located at the upper right of 1-2 gear sliding blocks
End, screw rod are connect with screw rod fixing end.
The 3-4 gearshifts are opened by 3-4 motors, universal joint, screw rod, 3 gear limit switches, 3-4 gears sliding block, 4 gear limits
It closes and screw rod fixing end composition, 3-4 motor right end universal-joints, universal joint right end connecting screw, screw rod is kept off with 3-4 in sliding block
Between threaded hole connection, low high gear sliding block and low high gear shift fork consolidate, and 3 gear limit switches are located at the left upper end that 3-4 keeps off sliding block, 4
Gear limit switch is located at the upper right side of 3-4 gear sliding blocks, and screw rod is connect with screw rod fixing end.
The clutch on-off device is made of electric pushrod, push rod and clutch limit switch.The clutch motor right end connects
Universal joint is connect, universal joint right end connects electric pushrod, and clutch limit switch is located at the left upper end of electric pushrod, electric pushrod right end
It is connect with clutch pull rod.
Gearshift controls process：According to practical road conditions and travel situations, first selects secondary main transformer speed low gear or high gear or fall
The trigger button of gear, 1 gear or 2 gears or 3 gears or 4 gears or neutral gear, complete gear shift operation in reselection main transformer speed.
Low gear button is triggered, low gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch and disconnects letter
Number, clutch disconnects, and push rod retraction 70mm, controller exports low high motor rotation command signal counterclockwise, and low high gear motor is inverse
Hour hands rotate, and low high gear sliding block moves downward under screw acting, and until contacting low gear limit switch, low high gear sliding block drives low
Gear shift fork moves downward, and transmission gear enters low gear, low gear limit switch trigger signal input controller, and controller exports low
High gear motor silence signal, motor rotation stop, and controller exports clutch closure signal, and clutch is closed, low gear shift
Terminate.
Neutral gear button is triggered, neutral gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch and disconnects letter
Number, clutch disconnects, and push rod retraction 70mm judges that controller exports the command signal of low high motor according to a upper gear positions；
If a upper gear is low gear, controller output rotates clockwise command signal, and low high gear motor rotates clockwise, and low high gear is slided
Block moves right under screw acting, and until initial position, controller exports low high gear motor silence signal, motor rotation
Stop, controller exports clutch closure signal, and clutch is closed, shifts gears and terminate from low gear to neutral gear.If a upper gear is high gear,
Then controller exports rotation command signal counterclockwise, and low high gear motor rotates counterclockwise, low high gear sliding block under screw acting to
Left movement, until initial position, controller exports low high gear motor silence signal, and motor rotation stops, controller output
Clutch closure signal, clutch are closed, shift gears and terminate from high gear to neutral gear.It empties gear and uses similar control method.
High gear button is triggered, high gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch and disconnects letter
Number, clutch disconnects, and push rod retraction 70mm, controller exports low high motor and rotates clockwise command signal, and low high gear motor is suitable
Hour hands rotate, and low high gear sliding block moves right under screw acting, and low high gear sliding block drives low gear shift fork to move right, speed changer
Gear enters high gear, and until contacting high gear limit switch, high gear limit switch trigger signal input controller, controller exports low
High gear motor silence signal, motor rotation stop, and controller exports clutch closure signal, and clutch is closed, high gear shift
Terminate.
It reverses gear and empties gear and use the control method similar with low gear, neutral gear and high gear.
1 gear button of triggering, 1 gear button indicating lamp is bright, and trigger signal input controller, controller exports clutch and disconnects letter
Number, clutch disconnects, and push rod retraction 70mm, controller exports 1-2 motors rotation command signal counterclockwise, and 1-2 keeps off the motor inverse time
Needle rotates, and 1-2 gear sliding blocks move downward under screw acting, and 1-2 gear sliding blocks drive 1-2 shift forks to move downward, transmission gear
Into 1 gear, until 1 gear limit switch of contact, 1 gear limit switch trigger signal input controller, controller exports 1-2 and keeps off motor
Silence signal, 1-2, which keeps off motor rotation, to be stopped, and controller exports clutch closure signal, and clutch is closed, and 1 gear shift terminates.
2 gear button of triggering, 2 gear button indicating lamps are bright, and trigger signal input controller, controller exports clutch and disconnects letter
Number, clutch disconnects, and push rod retraction 70mm, controller output 1-2 motors rotate clockwise command signal, and 1-2 keeps off motor up time
Needle rotates, and 1-2 gear sliding blocks move right under screw acting, and 1-2 gear sliding blocks drive 1-2 shift forks to move right, transmission gear
Into 2 gears, until 2 gear limit switch of contact, 2 gear limit switch trigger signal input controllers, controller exports 1-2 and keeps off motor
Silence signal, 1-2, which keeps off motor rotation, to be stopped, and controller exports clutch closure signal, and clutch is closed, and 2 gear shifts terminate.
3-4 is kept off uses similar control method with neutral gear.
The fast low high gear gearshift of secondary main transformer and the cooperation of main transformer quick change blocking means, generate eight forward ranges；Secondary main transformer speed
Reverse gear gearshift and main transformer quick change blocking means cooperation, generate four retroversion gears.+ 1 gear of low gear=advance 1 is kept off, and low gear+2 is kept off
=advance 2 gears ,+3 gears of low gear=advance 3 is kept off, and+4 gears of low gear=advance 4 is kept off；+ 1 gear of high gear=advance 5 is kept off, the gear of high gear+2=preceding
Into 6 gears ,+3 gears of high gear=advance 7 is kept off, and+4 gears of high gear=advance 8 is kept off；Reverse gear+1 gear=fall 1 gear, reverse gear+2 gear=fall 2 gear,
It keeps off+3 and keeps off=fall 3 gears ,+4 gears that reverse gear=4 keep off.
When parking, after main transformer speed enters neutral gear with secondary gear shift gear, start parking braking.
The present invention has the following advantages that compared with prior art：
1. change control system effectively locks drive mechanism using the interlock function of the latching characteristics and controller of screw rod
Position, substitute mechanical interlocking and self-locking device, reduce the shift active force of gear handoff procedure.
2. push button shifting system can effectively reduce automobile operation difficulty, automobile fuel ecomomy is improved.
3. push button shifting system can effectively reduce clutch excessive wear caused by driver's operation error, extend clutch
Device service life.
Description of the drawings
Patent of the present invention is further illustrated with reference to the accompanying drawings and examples.
1 push button gearshift schematic diagram of attached drawing；
2 push button transmission control flow chart of attached drawing.
In figure, 1, low high motor 2, universal joint 3, screw rod 4, high gear limit switch 5, low high gear sliding block 6, low gear limit
Bit switch 7, screw rod fixing end 8,1-2 motors 9,1 keep off limit switch 10,1-2 gear sliding blocks 11,2 keep off limit switch 12,4
Gear limit switch 13,3 keeps off limit switch 14,3-4 keeps off sliding block 15,3-4 motors 16, the sliding block 17 that reverses gear, reverse gear limit switch
18 reverse gear motor 19, electric pushrod 20, clutch limit switch 21, push rod 22, shift fork connecting hole
Specific embodiment
1 and 2 the present invention is further described below in conjunction with the accompanying drawings：
The main body mechanism of the present embodiment includes PBU pushbutton unit, control device and gearshift three parts.It is characterized in that：Institute
PBU pushbutton unit is stated by 1 gear of main transformer speed, 2 gears, 3 gears, 4 gears and five trigger buttons of neutral gear, secondary main transformer speed high gear, neutral gear, is fallen at low gear
Gear and emptying keep off five trigger buttons compositions.Each trigger button shows gear positions, wherein main transformer speed equipped with red or green bright light
Gear installs green indicator light, and red indicating light is installed in secondary main transformer speed gear position.
The control device is made of power supply, PLC controller, switch and conducting wire.
The gearshift is made of secondary main transformer quick change blocking means, main transformer quick change blocking means and clutch on-off device.
The pair main transformer quick change blocking means are made of low high gear gearshift and the gearshift that reverses gear；The low high gear shift
Device is consolidated by low high motor 1, universal joint 2, screw rod 3, high gear limit switch 4, low high gear sliding block 5, low gear limit switch 6 and screw rod
Fixed end 7 forms.The 1 right end universal-joint 2 of low high motor, 2 right end connecting screw 3 of universal joint, screw rod 3 and low high gear sliding block
Threaded hole connection among 5, when screw rod 3 rotates, low high gear sliding block 5 generates the displacement of horizontal direction, and high gear limit switch 4 is located at
The left upper end of low high gear sliding block 5, low gear limit switch 6 are located at the upper right side of low high gear sliding block 5, and screw rod 3 connects with screw rod fixing end 7
It connects；The gearshift that reverses gear by the motor 18 that reverses gear, universal joint 2, screw rod 3, the limit switch 17 that reverses gear, reverse gear sliding block 16 and screw rod
Fixing end 7 forms.The 18 right end universal-joint 2 of motor that reverses gear, 2 right end connecting screw 3 of universal joint, screw rod 3 and cunning of reversing gear
Threaded hole connection among block 16, the limit switch 17 that reverses gear are located at the left upper end for the sliding block 16 that reverses gear, screw rod 3 and screw rod fixing end 7
Connection, shift fork are connected by shift fork connecting hole 22.
The main transformer quick change blocking means are made of 1-2 gearshifts and 3-4 gearshifts.The 1-2 gearshifts are by 1-2
Motor 8, universal joint 2, screw rod 3,1 keep off limit switch 9,1-2 gear sliding blocks 10,2 keep off limit switch 11 and the composition of screw rod fixing end 7,
The threaded hole of 8 right end universal-joint 2 of 1-2 motors, 2 right end connecting screw 3 of universal joint, 10 centre of screw rod 3 and 1-2 gears sliding block connects
It connecing, 1 gear limit switch 9 is located at the left upper end of 1-2 gear sliding blocks 10, and 2 gear limit switches 11 are located at the upper right side of 1-2 gear sliding blocks 10,
Screw rod 3 is connect with screw rod fixing end 7.The 3-4 gearshifts keep off limit switch by 3-4 motors 15, universal joint 2, screw rod 3,3
13,3-4 keeps off sliding block 14,4 and keeps off limit switch 12 and the composition of screw rod fixing end 7,15 right end universal-joint 2 of 3-4 motors, universal joint
2 right end connecting screws 3, screw rod 3 are connect with the threaded hole among 3-4 gears sliding block 14, and 3 gear limit switches 13 are located at 3-4 gear sliding blocks
14 left upper end, 4 gear limit switches 12 are located at the upper right side of 3-4 gear sliding blocks 14, and screw rod 3 is connect with screw rod fixing end 7.
The clutch on-off device is made of clutch motor 19, electric pushrod 21 and clutch limit switch 20.The clutch
19 right end of motor connects electric pushrod 21, and clutch limit switch 20 is located at the left upper end of electric pushrod 21,21 right end of electric pushrod
It is connect with clutch pull rod.
Gearshift controls process：According to practical road conditions and travel situations, first select in secondary main transformer speed low gear or high gear or
The trigger button to reverse gear, 1 gear or 2 gears or 3 gears or 4 gears, complete gear shift operation in reselection main transformer speed.
Low gear button is triggered, low gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch and disconnects letter
Number, the retraction 70mm of electric pushrod 21, clutch disconnects, and controller exports low 1 rotation command signal counterclockwise of high motor, low high gear
Motor 1 rotates counterclockwise, and low high gear sliding block 5 moves downward under the effect of screw rod 3, until contacting low gear limit switch 6, low gear limit
6 trigger signal input controller of bit switch, controller export low 1 silence signal of high gear motor, and motor rotation stops, control
Device exports clutch closure signal, and clutch is closed, and low gear shift terminates.It reverses gear using similar control method.
Neutral gear button is triggered, neutral gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch and disconnects letter
Number, the retraction 70mm of electric pushrod 21, clutch disconnects, and judges that controller exports the finger of low high motor 1 according to a upper gear positions
Enable signal.If a upper gear is low gear, controller output rotates clockwise command signal, and low high gear motor 1 rotates clockwise,
Low high gear sliding block 5 moves right under the effect of screw rod 3, and until initial position, controller exports low high gear motor 1 and is stopped letter
Number, motor rotation stops, and controller exports clutch closure signal, and clutch is closed, shifts gears and terminate from low gear to neutral gear.If upper one
Gear is high gear, then controller exports rotation command signal counterclockwise, and low high gear motor 1 rotates counterclockwise, and low high gear sliding block 5 exists
Screw rod 3 moves downward under acting on, and until initial position, controller exports low 1 silence signal of high gear motor, and motor rotation stops
Only, controller exports clutch closure signal, and clutch is closed, shifts gears and terminate from high gear to neutral gear.It empties gear and uses similar control
Method processed.
High gear button is triggered, high gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch and disconnects letter
Number, the retraction 70mm of electric pushrod 21, clutch disconnects, and controller exports low high motor 1 and rotates clockwise command signal, low high gear
Motor 1 rotates clockwise, and low high gear sliding block 5 moves right under the effect of screw rod 3, until contacting high gear limit switch 4, high gear limit
4 trigger signal input controller of bit switch, controller export low 1 silence signal of high gear motor, and motor rotation stops, control
Device exports clutch closure signal, and clutch is closed, and high gear shift terminates.
1 gear button of triggering, 1 gear button indicating lamp is bright, and trigger signal input controller, controller exports clutch and disconnects letter
Number, the retraction 70mm of electric pushrod 21, clutch disconnects, and controller exports 8 rotation command signal counterclockwise of 1-2 motors, 1-2 gear electricity
Machine 8 rotates counterclockwise, and 1-2 keeps off sliding block 10 and moved downward under the effect of screw rod 3, until the 1 gear gear limit of limit switch 9,1 of contact is opened
9 trigger signal input controllers are closed, controller exports 1-2 and keeps off 8 silence signal of motor, and 1-2, which keeps off the rotation of motor 8, to be stopped, control
Device processed exports clutch closure signal, and clutch is closed, and 1 gear shift terminates.2-4 is kept off and neutral gear is using similar with high to low gear neutral gear
Control method.
The fast low high gear gearshift of secondary main transformer and the cooperation of main transformer quick change blocking means, generate eight forward ranges；Secondary main transformer speed
Reverse gear gearshift and main transformer quick change blocking means cooperation, generate four retroversion gears.+ 1 gear of low gear=advance 1 is kept off, and low gear+2 is kept off
=advance 2 gears ,+3 gears of low gear=advance 3 is kept off, and+4 gears of low gear=advance 4 is kept off；+ 1 gear of high gear=advance 5 is kept off, the gear of high gear+2=preceding
Into 6 gears ,+3 gears of high gear=advance 7 is kept off, and+4 gears of high gear=advance 8 is kept off；Reverse gear+1 gear=fall 1 gear, reverse gear+2 gear=fall 2 gear,
It keeps off+3 and keeps off=fall 3 gears ,+4 gears that reverse gear=4 keep off.
When parking, after main transformer speed enters neutral gear with secondary gear shift gear, start parking braking.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
In the spirit and principles in the present invention, made by any modification, equivalent replacement and improvement, should be included in guarantor of the present invention
Within the scope of shield.
Claims (1)
1. a kind of gearshift is made of secondary main transformer quick change blocking means, main transformer quick change blocking means and clutch on-off device；The pair
Main transformer quick change blocking means are made of low high gear gearshift and the gearshift that reverses gear；The low high gear gearshift is by low high motor
(1), universal joint (2), screw rod (3), high gear limit switch (4), low high gear sliding block (5), low gear limit switch (6) and screw rod are fixed
Hold (7) composition；Low high motor (1) the right end universal-joint (2), universal joint (2) right end connecting screw (3), screw rod (3) with
The intermediate threaded hole connection of low high gear sliding block (5), when screw rod (3) rotates, low high gear sliding block (5) generates the displacement of horizontal direction,
High gear limit switch (4) is located at the left upper end of low high gear sliding block (5), and low gear limit switch (6) is located at the right side of low high gear sliding block (5)
Upper end, screw rod (3) are connect with screw rod fixing end (7)；The gearshift that reverses gear is by the motor that reverses gear (18), universal joint (2), screw rod
(3), reverse gear limit switch (17), the sliding block that reverses gear (16) and screw rod fixing end (7) composition；The motor that reverses gear (18) the right end connection
Universal joint (2), universal joint (2) right end connecting screw (3), screw rod (3) threaded hole intermediate with the sliding block that reverses gear (16) connect, reverse gear
Limit switch (17) is located at the left upper end for sliding block (16) of reversing gear, and screw rod (3) is connect with screw rod fixing end (7), shift fork passes through shift fork
Connecting hole 22 connects；
The main transformer quick change blocking means are made of 1-2 gearshifts and 3-4 gearshifts；The 1-2 gearshifts are by 1-2 motors
(8), universal joint (2), screw rod (3), 1 gear limit switch (9), 1-2 gear sliding blocks (10), 2 gear limit switches (11) and screw rod are fixed
Hold (7) composition, 1-2 motors (8) right end universal-joint (2), universal joint (2) right end connecting screw (3), screw rod (3) and 1-2 gears
The intermediate threaded hole connection of sliding block (10), 1 gear limit switch (9) are located at the left upper end of 1-2 gear sliding blocks (10), 2 gear limit switches
(11) it is located at the upper right side of 1-2 gear sliding blocks (10), screw rod (3) is connect with screw rod fixing end (7)；The 3-4 gearshifts are by 3-4
Motor (15), universal joint (2), screw rod (3), 3 gear limit switches (13), 3-4 gear sliding blocks (14), 4 gear limit switches (12) and spiral shell
Bar fixing end (7) forms, 3-4 motors (15) right end universal-joint (2), universal joint (2) right end connecting screw (3), screw rod (3)
The threaded hole intermediate with 3-4 gear sliding blocks (14) is connect, and 3 gear limit switches (13) are located at the left upper end of 3-4 gear sliding blocks (14), 4 gears
Limit switch (12) is located at the upper right side of 3-4 gear sliding blocks (14), and screw rod (3) is connect with screw rod fixing end (7)；
The clutch on-off device is made of clutch motor (19), electric pushrod (21) and clutch limit switch (20)；It is described from
Motor (19) right end connection electric pushrod (21) is closed, clutch limit switch (20) is located at the left upper end of electric pushrod (21), electronic
Push rod (21) right end is connect with clutch pull rod；
Gearshift controls process：According to practical road conditions and travel situations, first selects low gear or high gear in secondary main transformer speed or reverse gear
Trigger button, 1 gear or 2 gears or 3 gears or 4 gears, complete gear shift operation in reselection main transformer speed；
Low gear button is triggered, low gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch cut-off signal,
Electric pushrod (21) retraction 70mm, clutch disconnect, and controller exports low high motor (1) rotation command signal counterclockwise, low height
Motor (1) rotates counterclockwise, and low high gear sliding block (5) moves downward under screw rod (3) effect, until contacting low gear limit switch
(6), low gear limit switch (6) trigger signal input controller, controller export low high motor (1) silence signal, motor
Rotation stops, and controller exports clutch closure signal, and clutch is closed, and low gear shift terminates；It reverses gear using similar controlling party
Method；
Neutral gear button is triggered, neutral gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch cut-off signal,
Electric pushrod (21) retraction 70mm, clutch disconnect, and judge that controller exports the finger of low high motor (1) according to a upper gear positions
Enable signal；If a upper gear is low gear, controller output rotates clockwise command signal, and low high motor (1) rotates clockwise,
Low high gear sliding block (5) moves right under screw rod (3) effect, and until initial position, the low high motor (1) of controller output stops work
Make signal, motor rotation stops, and controller exports clutch closure signal, and clutch is closed, shifts gears and terminate from low gear to neutral gear；If
A upper gear is high gear, then controller exports rotation command signal counterclockwise, and low high motor (1) rotates counterclockwise, and low high gear is slided
Block (5) moves downward under screw rod (3) effect, and until initial position, controller exports low high motor (1) silence signal,
Motor rotation stops, and controller exports clutch closure signal, and clutch is closed, shifts gears and terminate from high gear to neutral gear；Gear is emptied to adopt
With similar control method；
High gear button is triggered, high gear button indicating lamp is bright, trigger signal input controller, and controller exports clutch cut-off signal,
Electric pushrod (21) retraction 70mm, clutch disconnect, and controller exports low high motor (1) and rotates clockwise command signal, low height
Motor (1) rotates clockwise, and low high gear sliding block (5) moves right under screw rod (3) effect, until contacting high gear limit switch
(4), high gear limit switch (4) trigger signal input controller, controller export low high motor (1) silence signal, motor
Rotation stops, and controller exports clutch closure signal, and clutch is closed, and high gear shift terminates；
1 gear button of triggering, 1 gear button indicating lamp is bright, and trigger signal input controller, controller exports clutch cut-off signal, electricity
Dynamic push rod (21) retraction 70mm, clutch disconnect, and controller exports 1-2 motors (8) rotation command signal counterclockwise, 1-2 motors
(8) rotation counterclockwise, 1-2 gear sliding blocks (10) move downward under screw rod (3) effect, until 1 gear limit switch (9) of contact, 1 gear
Limit switch (9) trigger signal input controller, controller export 1-2 motors (8) silence signal, 1-2 motors (8) rotation
Stop, controller exports clutch closure signal, and clutch is closed, and 1 gear shift terminates；2-4 is kept off and neutral gear uses and high to low gear sky
Keep off similar control method；
The fast low high gear gearshift of secondary main transformer and the cooperation of main transformer quick change blocking means, generate eight forward ranges；Secondary main transformer speed is reversed gear
Gearshift and the cooperation of main transformer quick change blocking means generate four retroversion gears；+ 1 gear of low gear=advance 1 is kept off, the gear of low gear+2=preceding
Into 2 gears ,+3 gears of low gear=advance 3 is kept off, and+4 gears of low gear=advance 4 is kept off；+ 1 gear of high gear=advance 5 is kept off ,+2 gears of high gear=advance 6
Gear ,+3 gears of high gear=advance 7 are kept off, and+4 gears of high gear=advance 8 is kept off；Reverse gear 1 gear of+1 gear=fall, and 2 gears of+2 gears that reverse gear=fall reverse gear+3
3 gears are kept off=fall ,+4 gears that reverse gear=4 keep off；
When parking, after main transformer speed enters neutral gear with secondary gear shift gear, start parking braking.
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| CN109340363A (en) * | 2018-10-29 | 2019-02-15 | 山东理工大学 | The fast push button gearshift of gear box of tractor 24 and its control method |
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