CN101581362B - Actuator for shift transformation of automatic gearbox of heavy type commercial automobile - Google Patents
Actuator for shift transformation of automatic gearbox of heavy type commercial automobile Download PDFInfo
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- CN101581362B CN101581362B CN2009100322127A CN200910032212A CN101581362B CN 101581362 B CN101581362 B CN 101581362B CN 2009100322127 A CN2009100322127 A CN 2009100322127A CN 200910032212 A CN200910032212 A CN 200910032212A CN 101581362 B CN101581362 B CN 101581362B
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- block selecting
- shift
- block
- multiposition cylinder
- gearshift
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Abstract
The invention discloses an actuator for the shift transformation of an electrically-controlled pneumatic mechanical automatic gearbox of a heavy type commercial automobile for road transportation; a shift selection multiposition cylinder and a shift transformation multiposition cylinder are arranged outside a shell respectively; the shift selection multiposition cylinder is communicated with a shift selection electromagnetic valve; the inside of the shift selection multiposition cylinder is provided with a shift selection push rod; the other end of the shift selection push rod is connected with a shift selection push block of the shell; a shift selection block, a spring and a shift transformation gear are sleeved on a spline shaft; the shift selection block is extended into a groove at thelower end of the shift selection push block; the outer end of a rack type push rod is extended into the shift transformation multiposition cylinder; the shift transformation multiposition cylinder is communicated with a shift transformation electromagnetic valve; the output of parameters of the operating condition is sequentially connected with an electrical control unit and a drive circuit; and the output of the drive circuit is connected with the shift selection electromagnetic valve and the shift transformation electromagnetic valve respectively. The actuator can carry out accurate positioning on shift selection stroke and shift transformation stroke, solves the problem of inaccurate stroke control in the process of shift transformation and improves the performance of the shift transformation and the reliability of the actuator.
Description
Technical field
The present invention relates to the electric control mechanical type automatic speed variator of road surface haulage vehicle, be specifically related to a kind of actuator of heavy type commercial automobile ecp automatic speed changer for machine shift transformation.
Background technique
Heavy type commercial automobile middle part vehicle section power transmission part is divided into the mechanical transmission of manually-operable gearshift, and gearbox adopts mainly fixedly that the shaft type gear mechanism carries out power transmission.In order to reduce the manual shift number of times of driver in driving procedure, reduce driver's labor intensity, on the basis of original manual transmission agent structure, adopt the electric control mechanical type automatic speed variator of the gearshift actuator of electronic control unit controls.Electric control mechanical type automatic speed variator installs electric control device (ECU) additional; The row operation of going forward side by side of collection vehicle Operational Limits and external signal; Judge the gearshift opportunity of mechanical transmission, when needs are shifted gears, the actuator of the electronic control unit controls shift transformation in the electric control device; Replace manual operation and accomplish gearshift, realize the automation of shift process.
At present, electric control mechanical type automatic speed variator is divided into three kinds of forms such as electrically controlled and hydraulically automatic mechanical transmission, ecp automatic mechanical transmission, electricity powered automatic mechanical transmission.Wherein, It is big that the electrically controlled and hydraulically automatic mechanical transmission has a capacity; Easy and simple to handle, be easy to realize safety protection, have certain absorbing and the ability of absorb impacting and be convenient to advantage such as spatial arrangement; But it is bigger that the work of actuator is acted upon by temperature changes, its complex structure in addition, and manufacture cost is high.The shifting system of electricity powered automatic mechanical transmission has simple relatively, the lightweight advantage of structure, but needs baroque speed reducer, and cost is also higher relatively, installs and the adjustment relative complex.For heavy type commercial automobile, owing to have source of the gas on the vehicle, only need on the basis of original manual shift mechanism, simply to reequip, just can realize self shifter after installing electronic control unit additional.The ecp automatic mechanical transmission generally all is on the basis of original shift control system, directly to add selected gearshift cylinder and displacement transducer at present; Make transmission mechanisms numerous and diverse; Or have tetragonal groove in the middle of being employed in block selecting axle and gearshift axle; Thereby the size of axle is bigger, causes speed changer overall structure size big.
Summary of the invention
The objective of the invention is the complicated and unreliable problem of gear of mechanical transmission gear shift operation in order to solve the many gears on the heavy type commercial automobile; A kind of actuator of simple ecp automatic mechanical transmission shift transformation has been proposed; Can reduce the friction of actuator, improve mechanism reliability.
The technological scheme that the present invention adopts is: be made up of block selecting actuator, gearshift actuator and housing three parts; Block selecting actuator comprises block selecting multiposition cylinder and displacement transducer; Gearshift actuator comprises gearshift multiposition cylinder and displacement transducer; Block selecting multiposition cylinder is arranged in hull outside with gearshift multiposition cylinder, and splined shaft is installed in the housing: block selecting multiposition cylinder is communicated with the block selecting solenoid valve, in block selecting multiposition cylinder interior the block selecting push rod is installed; Displacement transducer is positioned on the block selecting push rod of this end, and the other end of block selecting push rod is connected with the interior block selecting pushing block of housing; On splined shaft, be with block selecting piece, spring and power shift gear, the block selecting piece extend in the groove of block selecting pushing block lower end; Power shift gear and rack-type push rod engagement driving, the outer end of rack-type push rod stretch in the gearshift multiposition cylinder, and displacement transducer is positioned at the outer end of rack-type push rod, and gearshift multiposition cylinder is communicated with the gearshift solenoid valve; The output of operating conditions parameter signal connects ECU and drive circuit successively, and the output of drive circuit connects block selecting solenoid valve and gearshift solenoid valve respectively.
The invention has the beneficial effects as follows:
1, adopts the multiposition cylinder; The solenoid valve import is connected with source of the gas, and electronic control unit controls block selecting solenoid valve opens and closes the break-make of control source of the gas gas and multiposition cylinder with the outlet valve of gearshift solenoid valve; Thereby obtain the different position stroke of multiposition cylinder; Realization has solved the inaccurate problem of Stroke Control of shift process to the accurate location of block selecting stroke with the gearshift stroke, has improved the reliability of gearshift performance and actuator.
2, the upper end of shift block extend in the groove of block selecting push rod; The lower end extend in the selector fork, and is connected through spline with splined shaft, and shift block moves axially along splined shaft; The rotation of splined shaft simultaneously can drive the rotation of shift block; Realize about shift block and seesaw, accomplish block selecting and gearshift, make gear shift operation simple and reliable.Both can apply to the structure of various heavy type commercial automobile electric-controlled mechanical automatic speed transmissions, also can be used for the automatic improving of various heavy type commercial automobile mechanical transmissions, and be easy to make.
3, the upper end of block selecting piece and grooves contact face are sphere, and when elected block rotated, friction was little between block selecting piece and the block selecting push rod.
4, because multiposition cylinder thrust greater than pulling force, in order to increase value of thrust, at the overhead cover of splined shaft one spring, makes the thrust of cylinder and pulling force relatively more balanced.
Description of drawings
Below in conjunction with accompanying drawing and embodiment to further explain of the present invention.
Fig. 1 is a structure cross-sectional schematic of the present invention.
Fig. 2 is an A-A sectional view among Fig. 1.
Fig. 3 is that the automatically controlled part of the present invention connects schematic representation.
Among the figure: 1. splined shaft; 2. block selecting pushing block; 3. snap ring; 4. block selecting piece; 5. spring; 6. thrust block; 7. power shift gear; 8. gearshift multiposition cylinder; 9. rack-type push rod; 10. block selecting multiposition cylinder; 11. block selecting push rod; 12. housing; 13,14. displacement transducers; 15. block selecting solenoid valve; 16. gearshift solenoid valve; 21. ECU; 22. operating conditions parameter signal; 23. drive circuit.
Embodiment
The present invention is made up of block selecting actuator, gearshift actuator and housing 12 3 parts.Block selecting actuator comprises block selecting multiposition cylinder 10 and displacement transducer 13, and block selecting multiposition cylinder 10 is arranged in housing 12 outsides, specifically is the top that is fixed on housing 12 left sides.Block selecting multiposition cylinder 10 is communicated with block selecting solenoid valve 15, the inlet and outlet of block selecting solenoid valve 15 control multiposition cylinders 10.At the block selecting multiposition cylinder 10 inner block selecting push rods 11 of installing, block selecting multiposition cylinder 10 promotes block selecting push rod 11 and moves.Displacement transducer 13 is positioned on the block selecting push rod 11 of this end, and displacement transducer 13 can detect the position that block selecting push rod 11 moves.Block selecting pushing block 2 in the other end of block selecting push rod 11 and the housing 12 promotes block selecting pushing block 2 and laterally moves through being threaded.Splined shaft 1 is installed in the housing 12 and passes the hole of the inner chamber fixed dam of housing 12.On splined shaft 1, be with block selecting piece 4, spring 5 and power shift gear 7.Thrust block 6 skies are enclosed within on the splined shaft 1 and abut against on the inner chamber baffle plate of housing 12, and the spring 5 with pretension elastic force is installed between block selecting piece 4 and the thrust block 6.Have a groove in the lower end of block selecting pushing block 2, block selecting piece 4 extend in the groove of block selecting pushing block 2 lower ends, and block selecting piece 4 is a semi-circular shape with the surface of contact of block selecting pushing block 2 in groove, and therefore, spherical can be made in the upper end of block selecting piece 4.Block selecting piece 4 and splined shaft 1 are connected through spline, and splined shaft 1 rotation can drive the rotation of block selecting piece 4.Leave certain clearance in the upper end of block selecting piece 4 and the top of block selecting pushing block 2 grooves, this gap guarantees that it is the center rotation with splined shaft 1 that block selecting pushing block 2 does not influence block selecting piece 4.Block selecting pushing block 2 promotes block selecting piece 4 and on splined shaft 1, axially moves, and block selecting piece 4 lower ends extend in the groove of selector fork, and block selecting piece 4 moves axially the block selecting process that realizes.When elected block 4 moved axially, spring 5 received the pressure of block selecting piece 4, and spring 5 produces spring force and promotes thrust block 6, and thrust block 6 can not be moved axially by the restriction of the inner chamber fixed dam of housing 12.
Gearshift actuator comprises gearshift multiposition cylinder 8 and displacement transducer 14, and gearshift multiposition cylinder 8 is arranged in housing 12 outsides, specifically is the top that is fixed on housing 12 front sides.Block selecting multiposition cylinder 10 is identical with the axial direction of splined shaft 1, gearshift multiposition cylinder 8 and block selecting multiposition cylinder 10 vertical each other layouts, and this kind layout can prevent block selecting and gear shift operation mutual interference mutually.Gearshift multiposition cylinder 8 is communicated with gearshift solenoid valve 16, the inlet and outlet of gearshift solenoid valve 16 control gearshift multiposition cylinders 8.The transmission that is meshing with each other of power shift gear 7 and rack-type push rod 9, snap ring 3 abuts against on the both sides end face of power shift gear 7, can limit the move left and right of power shift gear 7 on splined shaft 1.The outer end of rack-type push rod 9 is stretched in the gearshift multiposition cylinder 8, and displacement transducer 14 is positioned at the outer end of rack-type push rod 9, and displacement transducer 14 detects the stroke of rack-type push rod 9.Power shift gear 7 and splined shaft 1 are connected through spline; The moving belt of rack-type push rod 9 is moved the rotation that keeps off gear 7; Power shift gear 7 rotation drives the rotation of splined shafts 1, and the piece of block selecting simultaneously 4 also produces rotation, and the part that block selecting piece 4 lower ends are inserted in selector fork can promote the gearshift of selector fork.
The output of operating conditions parameter signal 22 connects ECU 21 and drive circuit 23 successively, and the output of drive circuit 23 connects block selecting solenoid valve 15 and gearshift solenoid valve 16 respectively. Displacement transducer 13,14 is electrically connected ECU 21 respectively.The operating conditions parameter 22 of ECU 21 collection vehicle is confirmed choosing, gear shift operation, and passes through the switching that drive circuit 23 drives the block selecting solenoid valves 13 and the valve of gearshift solenoid valve 14, the break-make of gas in the control entering multiposition cylinder.Its concrete control procedure is following:
(1) ECU 21 collection vehicle operating conditions parameter signals 22; ECU 21 and block selecting solenoid valve 15 and gearshift solenoid valve 16 are connected through circuit; Block selecting solenoid valve 15 all adopts the three-position five-way solenoid valve with gearshift solenoid valve 16; Through calculation process, judge vehicle whether shift gears and judge shift gears.
When the gearshift that (2) reaches vehicle operating after treatment when running conditions of vehicle parameter signal 22 required, ECU 21 was judged transmission for vehicles whether on gear through displacement transducer 14, as when the neutral gear position, forwarded following step (3) to; As when the gear, ECU 21 is through the path of drive circuit 23 control gearshift solenoid valves 16 valves, and gearshift multiposition cylinder 8 promotes rack-type push rods 9 and moves, and rack-type push rod 9 and power shift gear 7 are through gear transmission, and straight line motion is converted into and rotatablely moves.Power shift gear 7 and splined shaft 1 are connected through spline, thereby drive splined shaft 1 rotation.Block selecting piece 4 also is to be connected through spline with splined shaft 1, and block selecting piece 4 also correspondingly is rotated, and promotes block selecting piece 4 and moves to neutral gear position.
(3) when gearshift shifting block during at neutral gear position, application of displacement sensor 13 detects the position that block selecting pieces 4 are parked, if be in the neutral gear position (as selecting 3 retainings, at the neutral gear position of 2-3) of selected gear, just forwards step (4) to; If not when selected gear neutral gear position; ECU 21 controlling and driving circuit 23 drive block selecting solenoid valve 15 valve opening and closings; Switching through valve makes block selecting multiposition cylinder 10 promote the corresponding stroke of block selecting push rod 11 acquisitions; Block selecting push rod 11 is connected with block selecting pushing block 2, promotes the neutral gear position of block selecting piece 4 to the gearshift place.
(4) block selecting piece 4 be parked in the neutral gear position that will shift gears; ECU 21 controlling and driving circuit 23 open and close through drives gearshift solenoid valve 16 valve ports; Switching through valve port is moved gearshift multiposition cylinder 8 promotion rack-type push rods 9, and rack-type push rod 9 straight lines move and promote power shift gear 7 transmissions, splined shaft 1 also corresponding transmission with block selecting piece 4; Thereby promote the position that selector fork moves to corresponding gear, accomplish whole shift process.
Claims (4)
1. the actuating device of a shift transformation of automatic gearbox of heavy type commercial automobile; Form by block selecting actuator, gearshift actuator and housing (12) three parts; Block selecting actuator comprises block selecting multiposition cylinder (10) and displacement transducer (13); Gearshift actuator comprises gearshift multiposition cylinder (8) and displacement transducer (14), and block selecting multiposition cylinder (10) and gearshift multiposition cylinder (8) are arranged in housing (12) outside, and splined shaft (1) is installed in the housing (12); It is characterized in that: block selecting multiposition cylinder (10) is communicated with block selecting solenoid valve (15); At the inner block selecting push rod (11) of installing of block selecting multiposition cylinder (10), displacement transducer (13) is positioned on the block selecting push rod (11) of this end, and the other end of block selecting push rod (11) is connected with the interior block selecting pushing block (2) of housing (12); On splined shaft (1), be with block selecting piece (4), spring (5) and power shift gear (7), the spring (5) with pretension elastic force is installed between block selecting piece (4) and the thrust block (6), and thrust block (6) sky is enclosed within splined shaft (1) and goes up and abut against on the inner chamber baffle plate of housing (12); Block selecting piece (4) extend in the groove of block selecting pushing block (2) lower end; Power shift gear (7) and rack-type push rod (9) engagement driving, the outer end of rack-type push rod (9) stretch in the gearshift multiposition cylinder (8), and displacement transducer (14) is positioned at the outer end of rack-type push rod (9), and gearshift multiposition cylinder (8) is communicated with gearshift solenoid valve (16); The output of operating conditions parameter signal (22) connects ECU (21) and drive circuit (23) successively, and the output of drive circuit (23) connects block selecting solenoid valve (15) and gearshift solenoid valve (16) respectively.
2. the actuating device of a kind of shift transformation of automatic gearbox of heavy type commercial automobile according to claim 1 is characterized in that: block selecting piece (4) is a semi-circular shape with the surface of contact of block selecting pushing block (2) in groove.
3. the actuating device of a kind of shift transformation of automatic gearbox of heavy type commercial automobile according to claim 1; It is characterized in that: block selecting multiposition cylinder (10) is identical with the axial direction of splined shaft (1), gearshift multiposition cylinder (8) and the vertical each other layout of block selecting multiposition cylinder (10).
4. the actuating device of a kind of shift transformation of automatic gearbox of heavy type commercial automobile according to claim 1, it is characterized in that: snap ring (3) abuts against on the both sides end face of power shift gear (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100322127A CN101581362B (en) | 2009-06-05 | 2009-06-05 | Actuator for shift transformation of automatic gearbox of heavy type commercial automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100322127A CN101581362B (en) | 2009-06-05 | 2009-06-05 | Actuator for shift transformation of automatic gearbox of heavy type commercial automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101581362A CN101581362A (en) | 2009-11-18 |
| CN101581362B true CN101581362B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100322127A Expired - Fee Related CN101581362B (en) | 2009-06-05 | 2009-06-05 | Actuator for shift transformation of automatic gearbox of heavy type commercial automobile |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185135B (en) * | 2011-12-29 | 2015-04-29 | 广西玉柴机器股份有限公司 | Drive mechanism of automated electrically-controlled mechanical transmission |
| CN102606725A (en) * | 2012-03-30 | 2012-07-25 | 湖南大学 | Automatic gear shifting mechanism for manual transmission |
| CN102692322B (en) * | 2012-05-22 | 2014-10-15 | 索特传动设备有限公司 | Test system for gear shifting actuating mechanism of automatic gearbox |
| CN102705502A (en) * | 2012-05-25 | 2012-10-03 | 浙江吉利汽车研究院有限公司杭州分公司 | Gear selecting and shifting actuator of automatic gearbox |
| CN103423429B (en) * | 2013-08-06 | 2016-09-07 | 潍柴动力股份有限公司 | Gear selection mechanism |
| CN105889488A (en) * | 2016-06-08 | 2016-08-24 | 陕西法士特齿轮有限责任公司 | Multi-shift automatic control device |
| CN105909777A (en) * | 2016-06-23 | 2016-08-31 | 陕西法士特齿轮有限责任公司 | Automatic control device |
| CN109114215A (en) * | 2018-09-18 | 2019-01-01 | 西安法士特汽车传动有限公司 | A kind of pneumatic gyropilot and its method of operating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2918899Y (en) * | 2006-06-15 | 2007-07-04 | 东风汽车有限公司 | Electric control pneumatic mechanical automatic transmission gear selecting and shifting mechanism assembly |
| CN101021265A (en) * | 2006-02-13 | 2007-08-22 | 比亚迪股份有限公司 | Automatic speed variator gear-selecting and shifting executing mechanism |
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2009
- 2009-06-05 CN CN2009100322127A patent/CN101581362B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021265A (en) * | 2006-02-13 | 2007-08-22 | 比亚迪股份有限公司 | Automatic speed variator gear-selecting and shifting executing mechanism |
| CN2918899Y (en) * | 2006-06-15 | 2007-07-04 | 东风汽车有限公司 | Electric control pneumatic mechanical automatic transmission gear selecting and shifting mechanism assembly |
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| Publication number | Publication date |
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| CN101581362A (en) | 2009-11-18 |
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