CN102042399B - Shift control mechanism of steering-wheel tractor - Google Patents
Shift control mechanism of steering-wheel tractor Download PDFInfo
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- CN102042399B CN102042399B CN201010589628.1A CN201010589628A CN102042399B CN 102042399 B CN102042399 B CN 102042399B CN 201010589628 A CN201010589628 A CN 201010589628A CN 102042399 B CN102042399 B CN 102042399B
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Abstract
The invention relates to a shift control mechanism of a steering wheel tractor, and the shift control mechanism carried out the shift control by adopting flexible axial lines. The shift control mechanism comprises a shift transmission assembly and a shift control assembly, wherein the shift transmission assembly comprises a lower gearbox cover, an upper gearbox cover and an intermediate transmission assembly; and the shift control assembly comprises a flexible selector axial line, an auxiliary-shift soft axial line, a main-shifting soft axial line, a main control assembly and an auxiliary control assembly, and the main control assembly and the auxiliary control assembly are arranged in a cab. The shift control mechanism has the characteristics of flexible shift, labor-saving operation, reliability and durability, and by using the shift control mechanism provided by the invention, a driver can carry out remote shift operation in a closed cab.
Description
Technical field
The present invention relates to a kind of tractor, particularly belong to a kind of shift control mechanism of steering-wheel tractor.
Background technique
At present, tractor is the important agricultural machinery and implement in new socialist countryside, what in society, the gearshift mechanism of most hand tractors adopted is the mode of the direct gear shift of long-armed stiff rod, the handle bracket of this gearshift mechanism and gear shifting handle must put in operator cabin, operator cabin need to be opened a very large mouth, when turn in tractor left and right, driver will follow the swing ability gear shift of gear lever, driver drives under the environment of exposing to the weather, comfort level is poor, labor intensity is large, affect driving safety, and long-armed stiff rod is in long using process, easily produce distortion, thereby cause disorderly shelves phenomenon, for this problem, people are through long-term practice, invented and adopted flexible shaft line to realize the operating mechanism of gear shift, as:
1. Chinese patent: steering-wheel type tractor with small four wheels selector device, application number: CN200620136507.0, the applying date: 2006.09.14, publication number: CN200975480, open day: 2007.11.14, claimant: Li Zhenqi; Liu Zhenhua; Li Yongkai; Lin Yingnan, address: No. 172, the riverine road of dragon country fair, Cangwu County, Guangxi Zhuang Autonomous Region, inventor: Li Zhenqi; Liu Zhenhua; Li Yongkai; Lin Yingnan, summary: this model utility relates to a kind of steering-wheel type tractor with small four wheels selector device, it is by gear shift transmitting assemblies and shift control module composition, gear shift transmitting assemblies comprises a lid, main transformer speed outer shaft in lid boss axis hole, coaxial and be applied in axle in the main transformer speed in the fast outer shaft of main transformer with main transformer speed outer shaft, and outside main transformer speed the secondary variable-speed shaft in next to axis, another boss axis hole of lid, there is respectively bulb knee section described main transformer speed outer shaft and main transformer Su Neizhou lower end, and there is right angle tumbler assembly secondary variable-speed shaft lower end; Shift control assembly comprises handles location case, at the spacing frid of H shape of handling on the case of location, be arranged on the main shift lever in the spacing frid H of H shape type groove, be arranged on the other secondary speed change lever of main shift lever, a left side, the middle slide bar corresponding with main shift lever in handling location case, corresponding with secondary speed change lever right slide bar; A described left side, middle slide bar are connected with axle, main transformer speed outer shaft in main transformer speed in gear shift transmitting assemblies respectively by flexible axle, and right slide bar is connected with secondary variable-speed shaft by flexible axle.
2. Chinese patent: tractor shift steering mechanism, application number: CN200820104503.3, the applying date: 2008.08.25, publication number: CN201246464, open day: 2009.05.27, claimant: Huang Shun, address: poly-precious one-tenth room, 14 No. 701st, Unit 1, main road, Wuming County Fragrance Hill, Nanning City, Guangxi Zhuang Autonomous Region, inventor: Huang Shun, summary: this model utility relates to tractor shift steering mechanism, large lid in this mechanism has " H " shape gear limiting through hole and secondary variable-speed shaft, little lid has main transformer speed positive axis and main counter shaft, there is rocking arm one end of main transformer speed positive axis, on its axle, have with pivoted arm and be provided with the cutting ferrule of spill chute, there is rocking arm one end of main counter shaft, the other end has the tabular pivoted arm being stuck on spill chute, in main manipulating box, have main manipulation counter shaft, on its axle, cover has the axle sleeve with secondary pivoted arm, and main manipulation speed change positive axis is housed on axle sleeve, and on its axle, cover has the main manipulation speed change lever with positive pivoted arm, the secondary variable-speed shaft of handling is housed on secondary manipulating box, on its axle, cover has the pair manipulation speed change lever with speed change pivoted arm, positive pivoted arm is connected through flexible axle with the rocking arm of the fast positive axis of main transformer, between the rocking arm of speed change pivoted arm and secondary variable-speed shaft and between the rocking arm of secondary pivoted arm and main counter shaft, through Lever type connection part, is connected.This model utility can realize the indoor gear-change operation that carries out of tractor driving in sealing.
Market survey through the inventor, although find that above-mentioned disclosed document has solved the disadvantage of driving under driver's environment in the open, yet, still there is some problems, as: in document 1, because axle in main transformer speed outer shaft and main transformer speed exists, easily wear and tear and have the factors such as bulb knee section distortion usually to cause random shelves, generation out of supply to use phenomenon not too reliably; In document 2, because the main transformer speed positive axis of the little lid of mechanism is towards below, the distance of gearbox and operator cabin is too near, still need to use stiff rod to connect, the hypometria of connecting rod and fixed axle sleeve, easily occur that gear shift is dumb, operation effort, even causes that gear shift is inaccurate, disorderly shelves, the defect such as out of supply.
Summary of the invention
Object of the present invention, is to provide a kind of and can solves above-mentioned deficiency, provide a kind of gear shift flexibly, rapid operation, reliability and durability shift control mechanism of steering-wheel tractor.
The design proposal that the present invention adopts is:
Shift control mechanism of steering-wheel tractor, adopt flexible shaft line to realize and handle gear shift, it comprises gear shift transmitting assemblies and shift control assembly, be characterized in: described gear shift transmitting assemblies comprises gearbox lower cover, gear-box top cover and transmission intermediate module, gearbox lower cover front portion has " work " shape gear spacing hole, secondary variable-speed shaft is equipped with at rear portion, rocking arm is equipped with in the upper end of secondary variable-speed shaft, there is right angle pivoted arm lower end, right angle pivoted arm stretches in the groove of secondary gear shift fork, gear-box top cover is arranged on the top of gearbox lower cover " work " shape gear spacing hole, described shift control assembly comprises gear selecting flexible shaft line, secondary speed changing flexible shaft line, main transformer speed flexible shaft line and be arranged on the main control member in operator cabin, secondary control member.
Above-described gear-box top cover is provided with gear selecting balance spring, selection lever, shift selection shaft assembly, shift shaft assembly and lower shake-changing arm, and lower shake-changing arm is towards the place ahead, and selection lever is through " work " shape gear spacing hole, and bar head stretches in the groove of main gear shift fork.
Above-described transmission intermediate module comprises stationary axle, upper pivoted arm, lower pivoted arm, secondary speed-changing pull rod and main speed-changing pull rod, stationary axle is fixed on gearbox right positions, upper pivoted arm, lower pivoted arm are arranged on respectively the top and bottom of stationary axle, the rocking arm of secondary speed-changing pull rod one end auxiliary connection variable-speed shaft, the other end connects the left arm of upper pivoted arm, the right arm auxiliary connection speed changing flexible shaft line of upper pivoted arm; Main speed-changing pull rod one end connects the lower shake-changing arm of shift shaft assembly, and the other end connects the left arm of lower pivoted arm, and the right arm of lower pivoted arm connects main transformer speed flexible shaft line, and the upper rocker arm of shift selection shaft assembly is connected with gear selecting flexible shaft line.
In above-described shift control assembly, gear selecting flexible shaft line one end connects the secondary pivoted arm of main control member, and the other end connects the upper rocker arm of shift selection shaft assembly; Main transformer speed flexible shaft line one end connects the positive pivoted arm of main control member, and the other end connects lower pivoted arm; Secondary speed changing flexible shaft line one end auxiliary connection control member, the other end connects upper pivoted arm.
The present invention has following advantage:
1. selector device of the present invention provides a kind of rapid operation, gear shift is flexible, reliability and durability gear-change operation mode, the gear shift transmitting assemblies that has solved present situation adopts U-shaped rod member, axle sleeve, connecting rod, a plurality of component such as moving bar piece and crank shape moving bar piece, this structure link is many, accumulation diastema is large, easily cause engage a gear not in place, random shelves, the phenomenon of trip stop, and middle gear shift transmitting assemblies of the present invention adopts upper pivoted arm, lower pivoted arm is arranged on stationary axle, flexible shaft line is directly connected in pivoted arm and lower pivoted arm, link is few, gap is little, engage a gear accurately puts in place like this, be difficult for disorderly shelves, thereby assurance safe driving.
2. because the gear shift transmitting assemblies in the present invention adopts rocking arm, shift selection shaft assembly, be the place ahead towards tractor, such space is larger, than being easier to arrange other gear shift transmitting assemblies, whole layout seems more reasonable, can realize in the operator cabin of sealing and carry out long-range gear-change operation, make driver can avoid wind and weather, improve travelling comfort.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, be described in further detail.
Fig. 1 is the structural representation of shift control mechanism of steering-wheel tractor of the present invention.
Fig. 2 is the plan view of Fig. 1 gearbox 26.
Fig. 3 is the sectional view of Fig. 2 gearbox 26.
Fig. 4 is the worm's eye view of gear-box top cover 21.
Fig. 5 is the worm's eye view of gearbox lower cover 18.
Reference character:
Operator cabin 1, main control member 2, secondary pivoted arm 3, positive pivoted arm 4, secondary control member 5, gear selecting flexible shaft line 6, secondary speed changing flexible shaft line 7, main transformer speed flexible shaft line 8, rocking arm 9, secondary speed-changing pull rod 10, upper rocker arm 11, upper pivoted arm 12, stationary axle 13, lower shake-changing arm 14, main speed-changing pull rod 15, lower pivoted arm 16, transmission intermediate module 17, gearbox lower cover 18, right angle pivoted arm 19, secondary variable-speed shaft 20, gear-box top cover 21, gear selecting balance spring 22, selection lever 23, shift selection shaft assembly 24, shift shaft assembly 25, gearbox 26, secondary gear shift fork 27, gear spacing hole 28, main gear shift fork 29, bar head 30.
Embodiment:
Shown in accompanying drawing 1～5, shift control mechanism of steering-wheel tractor of the present invention, adopt flexible shaft line to realize and handle gear shift, comprise gear shift transmitting assemblies and shift control assembly, wherein gear shift transmitting assemblies is by gearbox lower cover 18, gear-box top cover 21 and transmission intermediate module 17 form, gearbox lower cover 18 front portions have " work " shape gear spacing hole 28, secondary variable-speed shaft 20 is equipped with at rear portion, secondary variable-speed shaft 20 is equipped with rocking arm 9 in upper end, there is right angle pivoted arm 19 lower end, right angle pivoted arm 19 stretches in the groove of secondary gear shift fork 27, described gear-box top cover 21 is arranged on the top of gearbox lower cover 18 " work " shape gear spacing hole 28, gear-box top cover 21 is provided with gear selecting balance spring 22, selection lever 23, shift selection shaft assembly 24, shift shaft assembly 25 and lower shake-changing arm 14, lower shake-changing arm 14 is towards the place ahead, selection lever 23 is through " work " shape gear spacing hole 28, bar head 30 stretches in the groove of main gear shift fork 29, described transmission intermediate module 17 comprises stationary axle 13, upper pivoted arm 12, lower pivoted arm 16, secondary speed-changing pull rod 10 and main speed-changing pull rod 15, stationary axle 13 is fixed on gearbox 26 right positions, upper pivoted arm 12, lower pivoted arm 16 is arranged on respectively stationary axle 13 top and bottom, the rocking arm 9 of secondary speed-changing pull rod 10 one end auxiliary connection variable-speed shafts 20, the other end connects the left arm of upper pivoted arm 12, the right arm auxiliary connection speed changing flexible shaft line 7 of upper pivoted arm 12, main speed-changing pull rod 15 one end connect the lower shake-changing arm 14 of shift shaft assembly 25, the other end connects the left arm of lower pivoted arm 16, the right arm of lower pivoted arm 16 connects main transformer speed flexible shaft line 8, the upper rocker arm 11 of shift selection shaft assembly 24 is connected with gear selecting flexible shaft line 6, described shift control assembly comprises main control member 2 and secondary control member 5, main control member 2 and secondary control member 5 are arranged on the appropriate location of operator cabin 1, main control member 2 comprises positive pivoted arm 4 and secondary pivoted arm 3, described gear selecting flexible shaft line 6 one end connect the secondary pivoted arm 3 of main control member 2, the other end connects the upper rocker arm 11 of shift selection shaft assembly 24, main transformer speed flexible shaft line 8 one end connect the positive pivoted arm 4 of main control member 2, and the other end connects lower pivoted arm 16, secondary speed changing flexible shaft line 7 one end auxiliary connection control members 5, the other end connects upper pivoted arm 12.
On existing steering wheel type tractor, install when of the present invention, first tractor chassis gear shift cover is pulled down, the main gear shift fork 29 of improved is loaded onto, and they are pushed to neutral position, load onto successively gearbox lower cover 18 and gear-box top cover 21, make right angle pivoted arm 19 embed in the chute of secondary gear shift fork 27, the bar head 30 of selection lever 23 embeds in the chute of main gear shift fork 29 simultaneously.Then main control member 2 and secondary control member 5 are arranged on to the relevant position of operator cabin 1.During operation, when the handle of the main control member 2 that swings, secondary pivoted arm 3 also swings up and down thereupon, and drive upper rocker arm 11, shift selection shaft assembly 24 to swing by gear selecting flexible shaft line 6, and order about selection lever 23 and move forward and backward at " work " shape gear spacing hole 28, driven rod head 30 is parked in the chute of needed gear shift fork exactly.When the handle of the main control member 2 of swing, positive pivoted arm 4 swings up and down thereupon, and drive lower pivoted arm 16 to swing by main transformer speed flexible shaft line 8, lower pivoted arm 16 drives the rotation of shift shaft assembly 25 by main speed-changing pull rod 15 and lower shake-changing arm 14, and drive selection lever 23 to swing at " work " shape gear spacing hole 28, thereby driven rod head 30 is stirred needed gear shift fork exactly, realize the accurate switching between reverse gear, I shelves, II shelves or III shelves.When the handle of front and back swinging pair control member 5, by secondary speed changing flexible shaft line 7, action is delivered to rocking arm 9 and secondary variable-speed shaft 20, under right angle pivoted arm 19 effects of secondary variable-speed shaft 20 lower ends, order about secondary gear shift fork 27, and promote the movement of secondary speed change gear, thereby realize the switching of high, low speed gear.
Claims (2)
1. a shift control mechanism of steering-wheel tractor, adopt flexible shaft line to realize and handle gear shift, it comprises gear shift transmitting assemblies and shift control assembly, it is characterized in that: described gear shift transmitting assemblies comprises gearbox lower cover (18), gear-box top cover (21) and transmission intermediate module (17), gearbox lower cover (18) front portion has " work " shape gear spacing hole (28), secondary variable-speed shaft (20) is equipped with at rear portion, rocking arm (9) is equipped with in the upper end of secondary variable-speed shaft (20), there is right angle pivoted arm (19) lower end, right angle pivoted arm (19) stretches in the groove of secondary gear shift fork (27), gear-box top cover (21) is arranged on the top of gearbox lower cover (18) " work " shape gear spacing hole (28), described shift control assembly comprises gear selecting flexible shaft line (6), secondary speed changing flexible shaft line (7), main transformer speed flexible shaft line (8) and be arranged on the main control member (2) in operator cabin (1), secondary control member (5),
Described transmission intermediate module (17) comprises stationary axle (13), upper pivoted arm (12), lower pivoted arm (16), secondary speed-changing pull rod (10) and main speed-changing pull rod (15), stationary axle (13) is fixed on gearbox (26) right positions, upper pivoted arm (12), lower pivoted arm (16) are arranged on respectively the top and bottom of stationary axle (13), the rocking arm (9) of secondary speed-changing pull rod (10) one end auxiliary connection variable-speed shaft (20), the other end connects the left arm of upper pivoted arm (12), the right arm auxiliary connection speed changing flexible shaft line (7) of upper pivoted arm (12); Main speed-changing pull rod (15) one end connects the lower shake-changing arm (14) of shift shaft assembly (25), the other end connects the left arm of lower pivoted arm (16), the right arm of lower pivoted arm (16) connects main transformer speed flexible shaft line (8), and the upper rocker arm (11) of shift selection shaft assembly (24) is connected with gear selecting flexible shaft line (6);
In described shift control assembly, gear selecting flexible shaft line (6) one end connects the secondary pivoted arm (3) of main control member (2), and the other end connects the upper rocker arm (11) of shift selection shaft assembly (24); Main transformer speed flexible shaft line (8) one end connects the positive pivoted arm (4) of main control member (2), and the other end connects lower pivoted arm (16); Secondary speed changing flexible shaft line (7) one end auxiliary connection control member (5), the other end connects upper pivoted arm (12).
2. shift control mechanism of steering-wheel tractor according to claim 1, it is characterized in that: described gear-box top cover (21) is provided with gear selecting balance spring (22), selection lever (23), shift selection shaft assembly (24), shift shaft assembly (25) and lower shake-changing arm (14), lower shake-changing arm (14) is towards the place ahead, selection lever (23) is through " work " shape gear spacing hole (28), and bar head (30) stretches in the groove of main gear shift fork (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010589628.1A CN102042399B (en) | 2010-12-15 | 2010-12-15 | Shift control mechanism of steering-wheel tractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010589628.1A CN102042399B (en) | 2010-12-15 | 2010-12-15 | Shift control mechanism of steering-wheel tractor |
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| CN102042399A CN102042399A (en) | 2011-05-04 |
| CN102042399B true CN102042399B (en) | 2014-01-15 |
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| CN201010589628.1A Active CN102042399B (en) | 2010-12-15 | 2010-12-15 | Shift control mechanism of steering-wheel tractor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102797835B (en) * | 2012-08-16 | 2015-01-21 | 梧州山王拖拉机制造有限公司 | Soft axis shifting manipulating mechanism of tractor |
| CN104948730A (en) * | 2014-03-28 | 2015-09-30 | 南宁市晓飞机械有限公司 | Gear shift control mechanism of tractor |
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| CN200975480Y (en) * | 2006-09-14 | 2007-11-14 | 李镇奇 | Gear shifting control mechanism of steering wheel type small four-wheel tractor |
| CN101195344A (en) * | 2007-12-27 | 2008-06-11 | 上海汽车集团股份有限公司 | Shifting control mechanism |
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| CN201525287U (en) * | 2009-11-26 | 2010-07-14 | 中国一拖集团有限公司 | Flexible shaft gear shifting control mechanism for gearbox in tractor |
| CN201592653U (en) * | 2010-02-11 | 2010-09-29 | 陕西重型汽车有限公司 | Soft axle operating device of truck transmission |
| CN201896932U (en) * | 2010-12-15 | 2011-07-13 | 广西钦州力顺机械有限公司 | Shift control mechanism of steering wheel tractor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953235A (en) * | 1982-09-18 | 1984-03-27 | Iseki & Co Ltd | Gear-shift control mechanism |
| JP4423062B2 (en) * | 2004-02-18 | 2010-03-03 | 株式会社クボタ | Tractor shifting operation structure |
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2010
- 2010-12-15 CN CN201010589628.1A patent/CN102042399B/en active Active
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| CN200975480Y (en) * | 2006-09-14 | 2007-11-14 | 李镇奇 | Gear shifting control mechanism of steering wheel type small four-wheel tractor |
| CN101195344A (en) * | 2007-12-27 | 2008-06-11 | 上海汽车集团股份有限公司 | Shifting control mechanism |
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| CN201525287U (en) * | 2009-11-26 | 2010-07-14 | 中国一拖集团有限公司 | Flexible shaft gear shifting control mechanism for gearbox in tractor |
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