CN202349182U - Cam type gear selection and shifting mechanism - Google Patents

Cam type gear selection and shifting mechanism Download PDF

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Publication number
CN202349182U
CN202349182U CN2011204670292U CN201120467029U CN202349182U CN 202349182 U CN202349182 U CN 202349182U CN 2011204670292 U CN2011204670292 U CN 2011204670292U CN 201120467029 U CN201120467029 U CN 201120467029U CN 202349182 U CN202349182 U CN 202349182U
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CN
China
Prior art keywords
gearshift
cam
axle
gear
shift
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN2011204670292U
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Chinese (zh)
Inventor
周志立
徐立友
李金辉
丁金全
席志强
郗建国
牛毅
曹付义
赵研科
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Henan University of Science and Technology
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Henan University of Science and Technology
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Publication date
Application filed by Henan University of Science and Technology filed Critical Henan University of Science and Technology
Priority to CN2011204670292U priority Critical patent/CN202349182U/en
Application granted granted Critical
Publication of CN202349182U publication Critical patent/CN202349182U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model relates to a cam type gear selection and shifting mechanism, which comprises a gear selection mechanism and a gear shifting mechanism. The gear selection mechanism is a cam type gear selection mechanism and comprises a cylindrical rotating cam with the rotating axial line parallel to a gear shifting shaft, a driven roller is arranged in a rotating slot of the cylindrical rotating cam in a guiding and sliding way, moves linearly along the rotating axial line when the cylindrical rotating cam rotates, and is connected with a gear shifting pointer sleeve in a transmission way via a driven rod fixedly connected with the driven roller, and the gear shifting pointer sleeve is arranged on a gear shifting pointer in a limiting and rotating way along the axial direction of the gear shifting shaft; and the cam type gear selection mechanism also comprises a double-shaft motor, and two output shafts of the double-shaft motor are respectively connected with the cam and the gear shifting shaft in a driving way via corresponding clutches. The gear selection mechanism is a cylindrical rotating cam type transmission mechanism, and the cylindrical cam can be driven to rotate to drive the roller to move along the surface slot line of the cylindrical cam, so that the driven rod can drive the gear shifting pointer to slide along the gear shifting shaft into a position corresponding to a shifting fork shaft, thereby realizing gear selection.

Description

The cam gear shift mechanism
Technical field
The utility model relates to wheel gearshift field, particularly tractor electric-controlled mechanical gearshift.
Background technique
In recent years, along with the automobile automatic gear development of technology, the research of China's automatic transmission product has obtained large development, has occurred different types of automatic transmission in succession.The gearshift power that needs during the tractor gearshift is bigger, and the frequent operation of conventional manual gearshift causes driver fatigue easily.On tractor, use automatic transmission, research tractor automatic Transmissions Technique more and more comes into one's own.Automobile-used electric control mechanical type automatic speed variator gear shift mechanism of the prior art mostly adopts hydraulic control, generally adopts double hydraulic cylinder X-Y quadrature formula to arrange, its control structure more complicated, and control unit is more, and manufacture cost is higher; Because hydraulic system performance temperature influence is bigger, makes and use the zone to receive certain restriction; In addition, than higher, more complicated is processed in the manufacturing of solenoid valve to hydraulic element, and control accuracy is lower to requirement on machining accuracy; Hydraulic oil leaks easily, befouling environment.
The model utility content
The purpose of the utility model provides a kind of compact structure, easy, easy to operate tractor electric control mechanical type automatic speed variator gear shift mechanism is installed, in order to solve the problem of existing shift-selecting and changing actuating mechanism complex structure, control inconvenience.
For realizing above-mentioned purpose; The scheme of the utility model is: a kind of cam gear shift mechanism; Comprise block selecting mechanism and gearshift; Said gearshift comprises a gearshift axle; Only revolving the earth's axis on the gearshift axle has gearshift to refer to slidable fit; Gearshift refers to be fixed with shift fork, and corresponding shift fork is set side by side with at least two declutch shift shafts perpendicular to the gearshift axle; Said block selecting mechanism is a cam block selecting mechanism; Comprise the cylinder turning cam that pivot center and gearshift axle laterally arrange; In the turning slot of cylinder turning cam there be when the cylinder turning cam rotates along the straight-line roller follower of pivot center the guiding slidable fit; Roller follower is by being in transmission connection with its fixing follower lever and a gearshift fingerstall, and this gearshift fingerstall is assemblied in said gearshift along the ground rotation of gearshift axle axial limiting and refers to; Said cam gear shift mechanism also comprises a dual-axle motor, and two output shafts of this dual-axle motor drive respectively by each self-corresponding clutch and connect said cam and gearshift axle.
Two output shafts of said dual-axle motor are parallel, and one of them output shaft is connected to said cam or gearshift axle through bevel gear drive mechanism and worm-and-wheel gear successively.Said gearshift axle and said gearshift refer to only revolve through spline and cooperate.Said follower lever one end and the welding of said roller follower, the other end and said gearshift fingerstall are hinged.
The gear shift mechanism of the utility model, block selecting mechanism is a cylinder turning cam driving mechanism, rotates through driving cylindrical cam; The line of rabbet joint moves along the cylindrical cam surface to drive roller; Make follower lever drive gearshift and refer to slide, slide into the position of the corresponding declutch shift shaft of institute along the gearshift axle, thus the realization block selecting.Gearshift comprises the gearshift axle and refers to the gearshift of gearshift axle through spline fitted, when the gearshift axle rotates, drives gearshift and refers to rotate, thereby drive shift fork, stirs corresponding declutch shift shaft and moves to suitable gear, realizes gearshift.
Description of drawings
Fig. 1 is the structural drawing of the gear shift mechanism of the utility model;
Fig. 2 is the follower lever structural drawing of the utility model;
Fig. 3 is that the gearshift of the utility model refers to structural drawing;
Fig. 4 is the declutch shift shaft structural drawing of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
A kind of gear shift mechanism that is used for tractor as shown in Figure 1 comprises block selecting mechanism and gearshift, and gearshift comprises a gearshift axle 9, and gearshift refers to that 8 only revolve with gearshift axle 9 through spline and to cooperate, and can do along gearshift spools 9 and endwisely slip.Gearshift refers to that 8 lower ends are fixed with shift fork 81, and corresponding shift fork 81 is set side by side with three declutch shift shafts 12,14,15 perpendicular to the gearshift axle.
Block selecting mechanism is a cam block selecting mechanism, comprises the cylinder turning cam 4 that laterally arranges with gearshift axle 9, and the roller follower 5 of cam and the welding of an end of a follower lever 6 are fixing, and the other end of follower lever 6 is hinged with gearshift fingerstall 30.During the cylindrical cam rotation, its roller follower will drive follower lever 6 and carry out straight line (along gearshift axle 9) motion.Like Fig. 2, shown in Figure 3, follower lever 6 head A are the ears ring structure, have hole B and hole C; Gearshift fingerstall 30 1 ends are provided with hole D, cooperate with hole B, C, insert bearing pin and form hinging structure.Gearshift fingerstall 30 is set in gearshift and refers to can freely rotate in the chute on 8, but the axial motion that refers to along shifting gears is limited.
The cam gear shift mechanism also comprises a dual-axle motor 2 with two output shafts; Two output shafts are parallel, and the clutch 1,3 through separately drives respectively to connect between 8, one output shafts of cylindrical cam 4 and gearshift axle and the gearshift spools 8 and is provided with bevel gear drive mechanism and worm-and-wheel gear 18,17 successively; 18 is worm screw; 17 is worm gear, and 20 is bevel pinion, and 19 is bevel gear wheel; Through changing two mechanisms of transmission direction, make dual-axle motor 2 can drive cylindrical cam 4 and gearshift axle 9 and rotate by equidirectional.As other mode of executions, also can adopt the vertical dual-axle motor of two output shafts, at this moment, only need a worm-and-wheel gear or bevel gear drive mechanism to get final product.
As shown in Figure 4, the I miniature linear displacement transducer 11 that reverses gear is installed on the I back fork axle 12, and the II III is kept off miniature linear displacement transducer 13 and is installed on the II III retaining declutch shift shaft 14, and the IV V is kept off miniature linear displacement transducer 16 and is installed on the IV V retaining declutch shift shaft 15.
Changing to the II retaining with the I retaining is that example specifies: at first, 3 energisings of electronic control unit controls block selecting magnetic clutch get into jointing state; Motor 2 energising is rotated then, drives cylindrical cam 4 and rotates, and cam bawl 5 drives gearshift through cam follower lver 6 and refers to that 8 move along splined shaft 9; When arriving guide block 22 places; Block selecting position transducer 10 feedback signals, electronic control unit controls motor 2 stops operating, 3 outages of block selecting magnetic clutch; Then, 1 energising of gearshift magnetic clutch gets into jointing state; Motor 2 energising rotations drive splined shafts 9 and rotate with worm screw 18, worm gear 17 through bevel pinion 20, bevel gear wheel 19, and gearshift refers to that 8 stir 12 motions of guide block 22 drive I back fork axles then; When moving to desired location; Magnetic clutch 1 outage that stops operating and shift gears of I drive range sensor 11 feedback signals of reversing gear, electronic control unit controls motor 2 hangs the I gear.When needs are hung when keeping off into II; At first; 1 energising of electronic control unit controls gearshift magnetic clutch engages, and then motor 2 energisings are rotated, and drives splined shaft 9 with worm screw 18, worm gear 17 mechanisms and rotates through bevel pinion 20, bevel gear wheel 19; Making gearshift refer to that 8 stir guide block 22 and drive I back fork axles 12 and be moved back into neutral gear position, electronic control unit controls motor 2 magnetic clutch 1 outage that stops operating and shift gears; Then; 3 energisings of block selecting magnetic clutch; Motor 2 energising drives cylindrical cams 4 and rotates, and cam bawl 5 drives gearshift through cam follower lver 6 and refers to that 8 move down along splined shaft 9, when gearshift refers to that 8 arrive guide blocks 23 places; Block selecting position transducer 10 feedback signals, electronic control unit controls motor 2 stop operating and 3 outages of block selecting magnetic clutch; At last, 1 energising of electronic control unit controls gearshift magnetic clutch, motor 2 energisings are rotated; Drive splined shaft 9 with worm screw 18, worm gear 17 mechanisms and rotate through bevel pinion 20, bevel gear wheel 19; Gearshift refers to that 8 stir 14 motions of guide block 23 drive II III retaining declutch shift shafts then, when moving to desired location, and II III retaining drive range sensor 13 feedback signals; Make motor 2 magnetic clutch 1 outage that stops operating and shift gears, hang the II gear.In addition, three guide blocks 21,23,22 not only are used to stir corresponding declutch shift shaft, and like Fig. 4, their groove correspondences when the choosing shelves of stirring separately are linked to be one along the axial guiding groove 24 of gearshift, when the choosing shelves, can also play the effect of setting upright.
More than change to the II retaining with regard to I retaining instance the technological scheme principle is described, the utility model is not limited thereto, and is suitable for the requirement of many gears of tractor.

Claims (4)

1. cam gear shift mechanism; Comprise block selecting mechanism and gearshift, said gearshift comprises a gearshift axle, and only revolving the earth's axis on the gearshift axle has gearshift to refer to slidable fit; Gearshift refers to be fixed with shift fork, and corresponding shift fork is set side by side with at least two declutch shift shafts perpendicular to the gearshift axle;
It is characterized in that; Said block selecting mechanism is a cam block selecting mechanism; Comprise the cylinder turning cam that rotation axis and gearshift axle laterally arrange; In the turning slot of cylinder turning cam there be when the cylinder turning cam rotate along the straight-line roller follower of rotation axis the guiding slidable fit, roller follower is through being in transmission connection with its a fixing follower lever and a gearshift fingerstall, and this gearshift fingerstall is assemblied in said gearshift along an axial limiting ground rotation of shifting gears and refers to;
Said cam gear shift mechanism also comprises a dual-axle motor, and two output shafts of this dual-axle motor drive respectively through each self-corresponding clutch and connect said cam and gearshift axle.
2. cam gear shift mechanism according to claim 1 is characterized in that, two output shafts of said dual-axle motor are parallel, and one of them output shaft is connected to said cam or gearshift axle through bevel gear drive mechanism and worm-and-wheel gear successively.
3. based on the described cam gear shift mechanism of claim 1, it is characterized in that said gearshift axle and said gearshift refer to only revolve through spline and cooperate.
4. cam gear shift mechanism according to claim 1 is characterized in that, said follower lever one end and the welding of said roller follower, and the other end and said gearshift fingerstall are hinged.
CN2011204670292U 2011-11-22 2011-11-22 Cam type gear selection and shifting mechanism Withdrawn - After Issue CN202349182U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204670292U CN202349182U (en) 2011-11-22 2011-11-22 Cam type gear selection and shifting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204670292U CN202349182U (en) 2011-11-22 2011-11-22 Cam type gear selection and shifting mechanism

Publications (1)

Publication Number Publication Date
CN202349182U true CN202349182U (en) 2012-07-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204670292U Withdrawn - After Issue CN202349182U (en) 2011-11-22 2011-11-22 Cam type gear selection and shifting mechanism

Country Status (1)

Country Link
CN (1) CN202349182U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102678901A (en) * 2011-11-22 2012-09-19 河南科技大学 Gear selecting and shifting mechanism for cam
CN103758993A (en) * 2014-01-14 2014-04-30 河南科技大学 Cam gear-shifting mechanism for small gearbox
CN106133403A (en) * 2014-03-26 2016-11-16 舍弗勒技术股份两合公司 For handling the cam drive of shifting shaft
CN111637219A (en) * 2020-06-16 2020-09-08 蜂巢传动科技河北有限公司 Actuator of transfer case

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102678901A (en) * 2011-11-22 2012-09-19 河南科技大学 Gear selecting and shifting mechanism for cam
CN102678901B (en) * 2011-11-22 2014-07-02 河南科技大学 Gear selecting and shifting mechanism for cam
CN103758993A (en) * 2014-01-14 2014-04-30 河南科技大学 Cam gear-shifting mechanism for small gearbox
CN103758993B (en) * 2014-01-14 2016-02-10 河南科技大学 A kind of cam gearshift of small gear-box
CN106133403A (en) * 2014-03-26 2016-11-16 舍弗勒技术股份两合公司 For handling the cam drive of shifting shaft
CN106133403B (en) * 2014-03-26 2018-07-06 舍弗勒技术股份两合公司 For manipulating the cam drive of shifting shaft
CN111637219A (en) * 2020-06-16 2020-09-08 蜂巢传动科技河北有限公司 Actuator of transfer case
CN111637219B (en) * 2020-06-16 2021-12-28 蜂巢传动科技河北有限公司 Actuator of transfer case

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C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20120725

Effective date of abandoning: 20140702

RGAV Abandon patent right to avoid regrant