CN103016701A - Gear selection and shift executing mechanism of automated mechanical transmission system - Google Patents

Gear selection and shift executing mechanism of automated mechanical transmission system Download PDF

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Publication number
CN103016701A
CN103016701A CN2012105289362A CN201210528936A CN103016701A CN 103016701 A CN103016701 A CN 103016701A CN 2012105289362 A CN2012105289362 A CN 2012105289362A CN 201210528936 A CN201210528936 A CN 201210528936A CN 103016701 A CN103016701 A CN 103016701A
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CN
China
Prior art keywords
gear
tooth
shift
shaft
clutch
Prior art date
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Pending
Application number
CN2012105289362A
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Chinese (zh)
Inventor
商建平
王子冬
关世孝
卢亚丽
姜宏暄
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China North Vehicle Research Institute
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China North Vehicle Research Institute
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Publication date
Application filed by China North Vehicle Research Institute filed Critical China North Vehicle Research Institute
Priority to CN2012105289362A priority Critical patent/CN103016701A/en
Publication of CN103016701A publication Critical patent/CN103016701A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a gear selection and shift executing mechanism of an automated mechanical transmission system. The gear selection and shift executing mechanism comprises an output gear, a shell, a tooth type clutch inner gear, a shift fork, a tooth type clutch outer gear, a worm wheel, a clutch guy cable flexible shaft assembly, a conical pin, a worm shaft, an output shaft, a primary speed changing bull gear, a primary speed changing pinion, a direct current motor and a sector-shaped shift fork shaft draw arm. The gear selection and shift executing mechanism provided by the invention is arranged on a gear box and directly acts on a gear selection and shift fork shaft on a fixed shaft type gear box, and switching of an automatic operation mode and a purely manual operation mode can also be extremely conveniently performed through the tooth type clutch on the basis of realizing the gear selection and shift function. The gear selection and shift executing mechanism has the advantages of adoption of low processing requirements in all structural design, small size, low cost, high reliability, compact structure, convenience and quickness in control, easiness in implementation of interior space arrangement and capabilities of effectively reducing the power of a driving motor and improving the accuracy for system control.

Description

The automatic mechanical transmission gear-selecting and shifting executing mechanism
Technical field
The invention belongs to system of vehicle transmission and manipulation technology field, be specifically related to a kind of for automatic mechanical transmission, take the tooth clutch structure as structure, directly act on fixed axle gearbox gear shift axle, have automatically and the mechanical automatic speed-changing system gear-selecting and shifting executing mechanism of manual switch function.
Background technique
The mechanical automatic speed changing technology that is applied to fixed axle gearbox is one of direction of contemporary system of vehicle transmission and manipulation technology development.Gear-selecting and shifting executing mechanism has important Research Significance as the key technology of automatic mechanical transmission automatedmechanical transmission (AMT).
Domestic existing AMT gear-shifting actuating mechanism mainly contains following form:
(1) the AMT automatic speed variator gear-selecting and shifting executing mechanism take China Patent No. ZL 200720123114.0 as representative, it only contains shift shaft, mechanism passes through the position to the selection control gear shift plunger of a plurality of (six) solenoid valve break-make, and then realizes selecting the purpose of gear.This structure need to be transformed accordingly to gearbox, and simultaneously required solenoid valve is more.
(2) take number of patent application: the 201110047957.8 AMT automatic speed variator gear-selecting and shifting executing mechanisms as representative, it is lead screw type mechanism, on the gear shift longitudinal tie of act on many gears, in a row arranging, advantage is that one group of mechanism is applicable to a plurality of gears, is specially adapted to the narrow and small heavy vehicle of gearbox boundary space.
Summary of the invention
The objective of the invention is for automatic mechanical transmission high-power, many gears heavy vehicle provide a kind of simple and compact for structure, be easy to realize Bus inner layout, control easily, have automatically the gear-selecting and shifting executing mechanism with pure manual control mode conversion function.
Technological scheme of the present invention is: a kind of automatic mechanical transmission gear-selecting and shifting executing mechanism is characterized in that comprising: output gear 1, housing 2, tooth clutch internal gear 3, shift fork 4, tooth clutch external gear 5, worm gear 6, clutch cable flexible axle assembly 7, worm shaft 9, output shaft 10, one-level speed change gearwheel 11, one-level change speed pinion 12, direct current generator 13, tooth fan type declutch shift shaft torque arm 16; The direct current generator 13 that is fixed on housing 2 outsides drives one-level speed change gearwheel 11 by one-level change speed pinion 12, one-level speed change gearwheel 11 is fixedly connected with worm shaft 9, worm shaft 9 is meshed with worm gear 6, worm gear 6 is fixedly connected with tooth clutch external gear 5, tooth clutch external gear 5 is complementary with tooth clutch internal gear 3, and output shaft 10 is slidingly connected by spline and tooth clutch internal gear 3; Output shaft 10 is fixedly connected with output gear 1; Clutch cable flexible axle assembly 7 is connected with tooth clutch internal gear 3 by shift fork 4; Shift fork 4 can drive tooth clutch internal gear 3 and fall into or break away from tooth-like external clutch gear 5; Output gear 1 links to each other with gear shifting fork of speed-changing box axle 15 by the torque arm 16 of tooth fan type declutch shift shaft; Housing 2 is fixedly installed on the gear-box case body.
Beneficial effect of the present invention: the present invention adopts direct current generator to drive; With double reduction institutional adjustment rotating speed and moment of torsion; At the worm gear center of second level reducing gear, designed the tooth clutch internal gear that connects the tooth clutch external gear of one, slides and to link to each other with output shaft with the worm gear pin; Affect shift fork to make the tooth clutch internal gear " fall into " (combination) or " disengaging " (separation) tooth clutch external gear by the clutch cable flexible axle.Gear-selecting and shifting executing mechanism of the present invention is arranged on the gearbox and directly acts on the sliding selector shaft that selects on the fixed axle gearbox, the former project organization of vehicle is not done change, select on the gear shift function basis in realization, also can carry out very easily automatically and the conversion of pure manual control pattern by tooth clutch.Low processing technology requirement is all adopted in entire infrastructure design of the present invention, and volume is little, and cost is low, good reliability, and compact structure, it is convenient to control, and is easy to realize the interior space layout.The present invention has realized selecting the simplification of gear shift mechanical transmission mechanism, effectively reduces drive motor power; Realized selecting minimizing of gear shift mechanic transmission clearance, Effective Raise the accuracy of system control.
Description of drawings
Fig. 1 is that automatic mechanical transmission gear-selecting and shifting executing mechanism of the present invention is at a kind of embodiment's of " manual work state " structural representation;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is that automatic mechanical transmission gear-selecting and shifting executing mechanism of the present invention is at a kind of embodiment's of " automatic mode " structural representation;
Fig. 4 is a kind of embodiment's of the mounting arrangements of automatic mechanical transmission gear-selecting and shifting executing mechanism of the present invention on gearbox schematic diagram.
Wherein: 1 output gear, 2 housings, 3 tooth clutch internal gears, 4 shift forks, 5 tooth clutch external gears, 6 worm gears, 7 clutch cable flexible axle assemblies, 8 taper pins; 9 worm shafts, 10 output shafts, 11 one-level speed change gearwheels, 12 one-level change speed pinions, 13 direct current generators; 14 hand shift drag links, 15 gear shifting fork of speed-changing box axles, 16 tooth fan type declutch shift shaft torque arm, 17 actuators of the present invention.
Embodiment
Describe the present invention below in conjunction with drawings and Examples:
A kind of automatic mechanical transmission gear-selecting and shifting executing mechanism.It comprises: output gear 1, housing 2, tooth clutch internal gear 3, shift fork 4, tooth clutch external gear 5, worm gear 6, clutch cable flexible axle assembly 7, taper pin 8, worm shaft 9, output shaft 10, one-level speed change gearwheel 11, one-level change speed pinion 12, direct current generator 13, tooth fan type declutch shift shaft torque arm 16;
Direct current generator 13 drives one-level speed change gearwheel 11 by one-level change speed pinion 12; One-level speed change gearwheel 11 links to each other with worm shaft 9; Worm shaft 9 is meshed with worm gear 6; Worm gear 6 is fixedly connected with tooth clutch external gear 5 by taper pin 8; Tooth clutch external gear 5 is meshed with tooth clutch internal gear 3; Output shaft 10 passes housing 2 bottoms, tooth clutch external gear 5, tooth clutch internal gear 3, housing 2 tops and gear 1 successively, and output shaft 10 is connected with housing by bearing; Output shaft 10 can rotate relative to tooth clutch external gear 5; Output shaft 10 is slidingly connected by spline and tooth clutch internal gear 3; Output shaft 10 is fixedly connected with output gear 1; Shift fork 4 one ends are connected with tooth clutch internal gear 3 outer surfaces, the other end is connected with clutch cable flexible axle assembly 7 after passing housing 2, an axle that is fixed on the housing 2 passes the middle part of shift fork 4, shift fork 4 can rotate and drive tooth clutch internal gear 3 around this axle and axially move along output shaft 10, thereby falls into or break away from tooth-like external clutch gear 5; Output gear 1 links to each other with gear shifting fork of speed-changing box axle 15 by the torque arm 16 of tooth fan type declutch shift shaft; The housing 2 of actuator 17 of the present invention must firmly be installed on the gear-box case body.
This body function is achieved as follows:
1. the conversion of hand control and automation state
When needs carry out the conversion of hand control and automation state, be located at the front end handle of operator cabin by pilot control " clutch cable flexible axle assembly 7 ", tooth clutch internal gear 3 " is fallen into " or " disengaging " tooth clutch external gear 5, " falling into " is auto state, and " disengaging " is manual state.When manual state, manually select gear shifting handle to realize transforming gear by pilot control, at this moment, as shown in Figure 1: output gear 1, output shaft 10, tooth clutch internal gear 3 are by tooth fan type declutch shift shaft torque arm 16 interlocks, with 14 idle running of hand shift drag link.
2. auto state selects the realization of gear shift function
When the controller of automatic mechanical transmission sends when selecting shift command, corresponding actuator 17 is such as Fig. 2, shown in Figure 3, tooth clutch internal gear 3 falls into tooth clutch external gear 5: direct current generator 13 is according to selecting the shift command direction to drive one-level change speed pinion 12, drive one-level speed change gearwheel 11, drive worm shaft 9, drive worm gear 6, drive tooth clutch external gear 5, drive tooth clutch internal gear 3, drive output shaft 10, drive output gear 1, drive tooth fan type declutch shift shaft torque arm 16, the sliding selector shaft 15 that drives gearbox is realized gear selection and conversion.
Such as vehicle at 1 grade of travelling state, when controller sends and changes to 2 grades of instructions from 1 grade, at first beginning to carry out gear by 1-R shelves actuator selects and conversion: its counterclockwise rotation of direct current generator 13, drive one-level change speed pinion 12, drive one-level speed change gearwheel 11, drive worm shaft 9, drive worm gear 6, drive tooth clutch external gear 5, drive tooth clutch internal gear 3, drive output shaft 10, drive output gear 1, drive tooth fan type declutch shift shaft torque arm 16, the sliding selector shaft 15 that drives gearbox makes its 1 grade of gear stirring gearbox be withdrawn into neutral gear position by the acting position; Then beginning to carry out gear by 2-3 shelves actuator selects and conversion: its direct current generator 13 clockwise directions rotation, drive one-level change speed pinion 12, drive one-level speed change gearwheel 11, drive worm shaft 9, drive worm gear 6, drive tooth clutch external gear 5, drive tooth clutch internal gear 3, drive output shaft 10, drive output gear 1, drive tooth fan type declutch shift shaft torque arm 16, the sliding selector shaft 15 that drives gearbox makes its 2 grades of gears stirring gearbox be engaged to 2 gear acting positions by neutral gear position.So, finish gear selection and the conversion of changing to 2 grades from 1 grade.

Claims (2)

1. an automatic mechanical transmission gear-selecting and shifting executing mechanism is characterized in that comprising: output gear (1), housing (2), tooth clutch internal gear (3), shift fork (4), tooth clutch external gear (5), worm gear (6), clutch cable flexible axle assembly (7), worm shaft (9), output shaft (10), one-level speed change gearwheel (11), one-level change speed pinion (12), direct current generator (13), tooth fan type declutch shift shaft torque arm (16);
The direct current generator (13) that is fixed on housing (2) outside drives one-level speed change gearwheel (11) by one-level change speed pinion (12), one-level speed change gearwheel (11) is fixedly connected with worm shaft (9), worm shaft (9) is meshed with worm gear (6), worm gear (6) is fixedly connected with tooth clutch external gear (5), tooth clutch external gear (5) is complementary with tooth clutch internal gear (3), and output shaft (10) is slidingly connected by spline and tooth clutch internal gear (3); Output shaft (10) is fixedly connected with output gear (1); Clutch cable flexible axle assembly (7) is connected with tooth clutch internal gear (3) by shift fork (4); Shift fork (4) can drive tooth clutch internal gear (3) and fall into or break away from tooth-like external clutch gear (5); Output gear (1) links to each other with gear shifting fork of speed-changing box axle (15) by tooth fan type declutch shift shaft torque arm (16); Housing (2) is fixedly installed on the gear-box case body.
2. a kind of automatic mechanical transmission gear-selecting and shifting executing mechanism according to claim 1, it is characterized in that: shift fork (4) one ends are connected with tooth clutch internal gear (3) outer surface, the other end is connected with clutch cable flexible axle assembly (7) after passing housing (2), an axle that is fixed on the housing (2) passes the middle part of shift fork (4), and shift fork (4) can rotate around this axle.
CN2012105289362A 2012-12-04 2012-12-04 Gear selection and shift executing mechanism of automated mechanical transmission system Pending CN103016701A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104776213A (en) * 2015-04-09 2015-07-15 中国北方车辆研究所 Automatic gear shifting device for armored vehicle
CN105065648A (en) * 2015-07-21 2015-11-18 广东省公路勘察规划设计院股份有限公司 Worm gear clutch assembly structure of driller reduction gearbox for engineering geological investigation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429591A (en) * 1979-03-13 1984-02-07 Eim Company, Inc. Drive shifting apparatus for valve control and the like
CN2044674U (en) * 1988-04-08 1989-09-20 张兆岐 Digit-displayed electric drive device for explosion -proof valve
CN201836358U (en) * 2010-05-31 2011-05-18 南京奥联动力传动科技有限公司 Actuating mechanism for gear selection and shift for AMT
CN201970996U (en) * 2011-03-18 2011-09-14 湖南中德汽车自动变速器股份有限公司 Longitudinally-mounted all-electric mechanical automatic transmission
CN102483155A (en) * 2009-09-01 2012-05-30 株式会社捷太格特 Speed shift device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429591A (en) * 1979-03-13 1984-02-07 Eim Company, Inc. Drive shifting apparatus for valve control and the like
CN2044674U (en) * 1988-04-08 1989-09-20 张兆岐 Digit-displayed electric drive device for explosion -proof valve
CN102483155A (en) * 2009-09-01 2012-05-30 株式会社捷太格特 Speed shift device
CN201836358U (en) * 2010-05-31 2011-05-18 南京奥联动力传动科技有限公司 Actuating mechanism for gear selection and shift for AMT
CN201970996U (en) * 2011-03-18 2011-09-14 湖南中德汽车自动变速器股份有限公司 Longitudinally-mounted all-electric mechanical automatic transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104776213A (en) * 2015-04-09 2015-07-15 中国北方车辆研究所 Automatic gear shifting device for armored vehicle
CN105065648A (en) * 2015-07-21 2015-11-18 广东省公路勘察规划设计院股份有限公司 Worm gear clutch assembly structure of driller reduction gearbox for engineering geological investigation

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Application publication date: 20130403