CN202251741U - Gearbox of agricultural vehicle - Google Patents
Gearbox of agricultural vehicle Download PDFInfo
- Publication number
- CN202251741U CN202251741U CN2011202861295U CN201120286129U CN202251741U CN 202251741 U CN202251741 U CN 202251741U CN 2011202861295 U CN2011202861295 U CN 2011202861295U CN 201120286129 U CN201120286129 U CN 201120286129U CN 202251741 U CN202251741 U CN 202251741U
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Abstract
The utility model provides a gearbox of an agricultural vehicle. In the utility model, an input shaft and an output shaft are parallel to each other, two ends of the input shaft and the output shaft are installed on end caps of a box body, five input gears are fixed on the input shaft, five output gears are arranged on the output shaft and are matched with the input gears, the output gears are provided with clamping grooves, poking claws of three pairs of shifting forks are clamped in the clamping grooves of corresponding gears, the lower end of a rocker is operated to ensure that a poking seat can poke the respective output gears to corresponding gears and the output gears are matched and meshed with the input gears to obtain different transmission ratios, the gearbox is also provided with a reversing shaft, a normally-engaged reversing gear on the reversing shaft is meshed with a reversing gear at the outer side of a shift I gear of the input shaft at normal state, and when the shift I gear of the output shaft is meshed with a reversing output gear of the reversing shaft, a reverse gear is realized. When the gearbox is adopted, the plurality of forward gears of the gearbox are applicable to the agricultural vehicle as well as varying driving conditions of country roads; as the reversing shaft is provided, the agricultural vehicle can reverse without changing the rotating direction of an engine; and idle gear is convenient for starting the engine, realize idling, gear shifting or power output.
Description
(1) technical field
The utility model relates to tractor or agricultural vehicle, is specially the tooth-like gearbox of a kind of agricultural vehicle of usefulness that a kind of suitable rural secondary highway uses.
(2) background technique
Automobile all has gearbox, and gearbox is made up of variable transmission mechanism and selector gear two-part.The main effect of variable transmission mechanism is numerical value and the direction that changes torque and rotating speed; The main effect of operating mechanism is the control driving mechanism, realizes the conversion of transmission ratio, promptly realizes gearshift, to reach the speed change bending moment.
Mechanical gearbox is tooth-like gearbox, and the different gear pair of many group velocity ratios is arranged in the gearbox, uses gear-driven reduction of speed principle, carries out transmission work (i.e. gearshift) through different gear pair in the operating mechanism selection gearbox.The gear pair work that velocity ratio is big is low speed; The gear pair work that velocity ratio is little is at a high speed.
The initial stage tractor is mainly used in farmland operation, does not dispose gearbox.In order to satisfy the traffic requirements tractor when being adapted as agricultural vehicle, some copies the used gearbox of automobile that gearbox also has been installed.But tractor extensively adopts internal-combustion piston engine as power source, and its torque and rotation speed change scope are less.The service condition of Automobile Complex then requires the tractive force of automobile and the speed of a motor vehicle in sizable scope, to change.The gearbox difference of the two is very big.But the most of experience in the past that just relies on of the being seen agricultural vehicle gearbox of existing market is made, and fails to realize the three-dimensional digital design, even lack the general assembly drawing of two dimension that the related data of each gear was not carried out detailed calculating and checking.This makes the agricultural vehicle of this gearbox of adapted often not reach the speed of a motor vehicle and output torque of needs.Structurally also there are some unreasonable nonstandard places in original in addition gearbox, and such as the reverse gear shaft that did not have standard originally, just directly being connected an optical axis (does not have rolling bearing) on the gear housing and be used to reverse gear, and this will accelerate machine members.
(3) model utility content
The purpose of the utility model is the tooth-like gearbox of a kind of agricultural vehicle of design; Carry out at drive part carrying out three-dimensional modeling on the basis of designing and calculating and verification, designed the special-purpose tooth-like gearbox of miniature four-wheel agricultural vehicle that comprises that one of five forward reverses gear gearbox.
The tooth-like gearbox of a kind of agricultural vehicle of the utility model design comprises casing, input shaft, output shaft and selector fork, and input shaft and output shaft are parallel to each other, two ends through Bearing Installation on housing plate; Each is splined shaft; Bore has corresponding spline, and each gear is installed in axle, and spline is circumferentially located gear; The input gear is fixed on the input shaft, and output gear can endwisely slip.
Be fixed with five input gears on the input shaft, five output gears that match are also arranged on the output shaft.The input gear of different gears and the engagement of the output gear number of teeth, velocity ratio is different, and the output shaft rotating speed is different.
Wherein the retaining of one on output shaft output gear one side has draw-in groove, and two, three retaining output gears and four, five retaining output gears are duplicate gear, and draw-in groove is arranged in the middle of the duplicate gear.
Selector fork comprises rotating shaft, dials seat and shift fork, two ends, the cover plate bottom side fixed installation shift fork bearing of gear box, and the rotating shaft two ends are installed in the corresponding hole of shift fork bearing, rotating shaft cooperates for the between centers crack with the hole.The shift fork upper end is a pusher dog for group seat, lower end, dials porose being through in the rotating shaft of seat, and the two is for movingly, and pusher dog matches with the draw-in groove of output gear.This gearbox is furnished with Third Mate's selector fork, each shift fork respectively with first gear, two, three retaining duplicate gears and four, five retaining duplicate gears match, each pusher dog is stuck in the draw-in groove of corresponding gear, dials seat and operates the rocking bar lower end and match.When touching certain, the swing of driver's control operation rocking bar dials seat; Pusher dog under it promotes gear and on output shaft, axially moves; The output gear of each retaining of output shaft is pushed on the corresponding gear with on the input shaft imports the gear mating engagement accordingly, and this speed changer reaches certain ratio, exports certain rotating speed.
Because of output shaft is a splined shaft, gear can not rotate when sliding.
For fear of strong friction takes place, the periphery of the inwall of pusher dog and the draw-in groove of each output gear is that line contacts.
This gearbox also is furnished with reverse gear shaft, and reverse gear shaft also parallels with input shaft, an end through Bearing Installation on the housing plate, the other end through Bearing Installation on the reverse gear shaft bearing at casing middle part.Reverse gear shaft is a splined shaft also, is fixed with the reverse gear constant mesh gear and the output gear that reverses gear on it, and bore has corresponding spline.The outside of input shaft first gear is fixed with reverse gear, and reverse gear and input shaft are circumferentially located through spline.Be in engagement, reverse gear shaft and input shaft backward rotation under the reverse gear of this input shaft and the constant mesh gear normality of reversing gear.When the driver pushes the output shaft first gear with the output gear that reverses gear and is meshed through the operation rocking bar, promptly hang up and reverse gear, output shaft turn to change.
For easy to assembly, the constant mesh gear that reverses gear is a duplicate gear with the output gear that reverses gear.
The advantage of the tooth-like gearbox of a kind of agricultural vehicle of the utility model is: 1, be furnished with five retaining input and output gears; Can change velocity ratio, enlarge driving wheel torque and change in rotational speed scope, be suitable for internal-combustion piston engine as power source, torque and the less agricultural vehicle of rotation speed change scope; Country road and the driving conditions that often changes that condition of compatibility is relatively poor; In starting, under the situation such as acceleration, upward slope, motor is worked under favourable operating mode; 2, be furnished with reverse gear shaft, under the constant prerequisite of hand engine rotation, the agricultural vehicle of this gearbox of configuration can be fallen back go; 3, can interrupt transmission of power during neutral, so that motor can be started, idling, and be convenient to gearbox shifting or carry out power output.
(4) description of drawings
Fig. 1 is the utility model embodiment overall structure schematic representation;
Fig. 2 is input shaft among Fig. 1, output shaft and reverse gear shaft scheme of installation;
Fig. 3 is the gear engagement situation schematic representation of input shaft, output shaft and reverse gear shaft among Fig. 1;
Fig. 4 is a selector fork structural representation among Fig. 1;
Fig. 5 is selector fork and an output shaft assembly structure schematic representation among Fig. 1.
The figure internal label is: 1, operation rocking bar, 2, selector fork, 21, dial seat, 22, the shift fork bearing, 23, rotating shaft; 24, pusher dog, 3, input shaft, 31, one retaining input gear, 32, two retaining input gears, 33, three retaining input gears; 34, four retaining input gears, 35, five retaining input gears, 36, reverse gear, 4, output shaft; 41, a retaining output gear, 42, two retaining output gears, 43, three retaining output gears, 44, four retaining output gears; 45, five retaining output gears, 5, reverse gear shaft, 51, the output gear that reverses gear, 52, constant mesh gear reverses gear; 6, casing, 61, cover plate.
(5) embodiment
The tooth-like gearbox embodiment of a kind of agricultural vehicle overall structure is as shown in Figure 1; Comprise casing 6, input shaft 3, output shaft 4, reverse gear shaft 5 and selector fork 2; Input shaft 3, output shaft 4 and reverse gear shaft 5 are parallel to each other; The two ends of input shaft 3, output shaft 4 through Bearing Installation on casing 6 end caps, reverse gear shaft 5 one ends through Bearing Installation on casing 6 end caps, the other end through Bearing Installation on the reverse gear shaft bearing at casing 5 middle parts.Each is splined shaft, and bore has corresponding spline, and each gear is installed in axle, and spline is circumferentially located gear, and the gear on input shaft and the reverse gear shaft is fixed on the axle, and output gear can endwisely slip.
Shown in Fig. 2 and 3, be fixed with five input gears on the input shaft 3, five output gears that match are arranged on the output shaft 5.One retaining input gear, 31 numbers of teeth are 15, one retaining output gear, 41 numbers of teeth 36, velocity ratio 2.4; Two retaining input gears, 32 numbers of teeth are 23, two retaining output gears, 42 numbers of teeth 28, velocity ratio 1.21; Three retaining input gears, 33 numbers of teeth are 28, three retaining output gears, 42 numbers of teeth 23, velocity ratio 0.82; Four retaining input gears, 34 numbers of teeth are 33, four retaining output gears, 44 numbers of teeth 18, velocity ratio 0.54; Five retaining input gears, 35 numbers of teeth are 36, the five retaining output gear numbers of teeth 15, velocity ratio 0.46.
Wherein the retaining of one on the output shaft 4 output gear 41 1 sides have draw-in groove, and two, three retaining output gears and four, five retaining output gears are duplicate gear, and draw-in groove is arranged in the middle of the duplicate gear.
The periphery of the inwall of pusher dog 24 and the draw-in groove of each output gear is that line contacts.
As shown in Figure 3; The constant mesh gear 52 and the output gear 51 that reverses gear reverse gear on the reverse gear shaft 5; The outside of input shaft 3 first gears 31 is fixed with reverse gear 36, is in engagement, reverse gear shaft 5 and input shaft 3 backward rotation under the reverse gear 36 of input shaft 3 and constant mesh gear 52 normalities of reversing gear of reverse gear shaft 5.Be meshed when the driver pushes output shaft 4 one retaining output gears 41 with the output gear 51 that reverses gear through operation rocking bar 1, promptly hang up and reverse gear, the sense of rotation of output shaft 5 changes.
The constant mesh gear 52 that reverses gear is duplicate gear with the output gear 51 that reverses gear.
It is as shown in table 1 that input shaft, output shaft respectively keep off gear.
Table 1 pto input shaft gear situation Schedule
| ? | One retaining | Two retainings | Three retainings | Four retainings | Five retainings |
| The input gear number of teeth | 15 | 23 | 28 | 33 | 36 |
| The output gear number of |
36 | 28 | 23 | 18 | 15 |
| Revise velocity ratio | 2.4 | 1.21 | 0.82 | 0.54 | 0.46 |
| Ratio error % | -0.41 | -1.02 | 3.97 | 4.89 | 4.16 |
| Input gear compound graduation |
45 | 69 | 84 | 99 | 108 |
| Output gear standard pitch diameter mm | 108 | 84 | 69 | 54 | 45 |
The output shaft rotating speed and the velocity ratio of this routine each forward gear of gearbox are as shown in table 2
Table 2
The foregoing description is merely concrete example of purpose, technological scheme and beneficial effect further explain to the utility model, and the utility model is not to be defined in this.All any modifications of within the scope of disclosure of the utility model, being made, be equal to replacement, improvement etc., all be included within the protection domain of the utility model.
Claims (7)
1. tooth-like gearbox of agricultural vehicle is characterized in that:
Comprise casing (6), input shaft (3), output shaft (4) and selector fork (2), input shaft (3) and output shaft (4) are parallel to each other, the two ends of input shaft (3), output shaft (4) through Bearing Installation on casing (6) end cap; Each is splined shaft; Bore has corresponding spline, and each gear is installed on the axle, and spline is circumferentially located gear; The input gear is fixed on the input shaft (3), and output gear can endwisely slip;
Be fixed with five input gears on the input shaft (3), five output gears that match are arranged on the output shaft (5).
2. the tooth-like gearbox of a kind of agricultural vehicle according to claim 1 is characterized in that:
Gear on said input shaft (3) and the output shaft (4) is: retaining input gear (a 31) number of teeth is 15, one retaining output gear (41) number of teeth 36, velocity ratio 2.4; Two retaining input gear (32) numbers of teeth are 23, two retaining output gear (42) numbers of teeth 28, velocity ratio 1.21; Three retaining input gear (33) numbers of teeth are 28, three retaining output gear (42) numbers of teeth 23, velocity ratio 0.82; Four retaining input gear (34) numbers of teeth are 33, four retaining output gear (44) numbers of teeth 18, velocity ratio 0.54; Five retaining input gear (35) numbers of teeth are 36, the five retaining output gear numbers of teeth (15), velocity ratio 0.46.
3. the tooth-like gearbox of a kind of agricultural vehicle according to claim 1 and 2 is characterized in that:
On the said output shaft (4) one retaining output gear (41) one sides have draw-in groove, and two, three retaining output gears and four, five retaining output gears are duplicate gear, and draw-in groove is arranged in the middle of the duplicate gear.
4. the tooth-like gearbox of a kind of agricultural vehicle according to claim 1 and 2 is characterized in that:
Said selector fork (2) comprises rotating shaft (23), dials seat (21) and shift fork; Cover plate (61) two ends, the bottom side fixed installation shift fork bearing (22) of gear box (6), rotating shaft (23) two ends are installed in the corresponding hole of shift fork bearing (22), rotating shaft (23) cooperates for the between centers crack with shift fork bearing (22) hole; Shift fork upper end for dial seat (21), the lower end is pusher dog (24), dials seat (21) are porose to be through in the rotating shaft (23), the two is for movingly; Pusher dog (24) matches with the draw-in groove of output gear; This gearbox is furnished with three secondary selector forks (2), and each shift fork matches with a retaining output gear (41), two, three retaining duplicate gears and four, five retaining duplicate gears respectively, and each pusher dog (24) is stuck in the draw-in groove of corresponding gear.
5. the tooth-like gearbox of a kind of agricultural vehicle according to claim 1 and 2 is characterized in that:
The periphery of the inwall of said pusher dog (24) and the draw-in groove of each gear is that line contacts.
6. the tooth-like gearbox of a kind of agricultural vehicle according to claim 1 and 2 is characterized in that:
Also be furnished with reverse gear shaft (5), reverse gear shaft (5) one ends through Bearing Installation on casing (6) end cap, the other end through Bearing Installation on the reverse gear shaft bearing at casing (5) middle part; Be fixed with constant mesh gear that reverses gear (52) and the output gear that reverses gear (51) on the reverse gear shaft (5); The outside of input shaft (3) first gear (31) is fixed with reverse gear (36), is in engagement, reverse gear shaft (5) and input shaft (3) backward rotation under the constant mesh gear that reverses gear (52) normality of the reverse gear (36) of input shaft (3) and reverse gear shaft (5); Be meshed when output shaft (4) one retaining output gears (41) push with the output gear that reverses gear (51), the sense of rotation of output shaft (5) changes.
7. the tooth-like gearbox of a kind of agricultural vehicle according to claim 6 is characterized in that:
Said constant mesh gear that reverses gear (52) and the output gear that reverses gear (51) are duplicate gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202861295U CN202251741U (en) | 2011-08-09 | 2011-08-09 | Gearbox of agricultural vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202861295U CN202251741U (en) | 2011-08-09 | 2011-08-09 | Gearbox of agricultural vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251741U true CN202251741U (en) | 2012-05-30 |
Family
ID=46112987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202861295U Expired - Fee Related CN202251741U (en) | 2011-08-09 | 2011-08-09 | Gearbox of agricultural vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251741U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653721A (en) * | 2013-11-21 | 2015-05-27 | 李斯端 | Mini-tiller variable speed transmission mechanism |
| CN104976290A (en) * | 2014-04-14 | 2015-10-14 | 万敬国 | Speed changer internally provided with clutch and double-ring duplicate gear speed reducer |
| CN107690940A (en) * | 2017-09-06 | 2018-02-16 | 东北大学 | A kind of artificial hay mover of small-sized external power-free |
| CN107816535A (en) * | 2017-11-24 | 2018-03-20 | 威马农机股份有限公司 | A kind of cultivator speed-changing box structure |
| CN107830125A (en) * | 2017-11-29 | 2018-03-23 | 滁州悦达实业有限公司 | Dynamic power shift gear box |
| CN108940004A (en) * | 2018-07-11 | 2018-12-07 | 无锡南理工科技发展有限公司 | A kind of Mechatronic mixer and its application method |
| CN109058400A (en) * | 2018-10-31 | 2018-12-21 | 安徽江淮汽车集团股份有限公司 | A kind of reverse gear transmission |
-
2011
- 2011-08-09 CN CN2011202861295U patent/CN202251741U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653721A (en) * | 2013-11-21 | 2015-05-27 | 李斯端 | Mini-tiller variable speed transmission mechanism |
| CN104976290A (en) * | 2014-04-14 | 2015-10-14 | 万敬国 | Speed changer internally provided with clutch and double-ring duplicate gear speed reducer |
| CN104976290B (en) * | 2014-04-14 | 2018-10-09 | 万敬国 | The speed changer that included clutch and connection ring duplicate gear slow down |
| CN107690940A (en) * | 2017-09-06 | 2018-02-16 | 东北大学 | A kind of artificial hay mover of small-sized external power-free |
| CN107816535A (en) * | 2017-11-24 | 2018-03-20 | 威马农机股份有限公司 | A kind of cultivator speed-changing box structure |
| CN107816535B (en) * | 2017-11-24 | 2023-12-05 | 威马农机股份有限公司 | Gear box structure of cultivator |
| CN107830125A (en) * | 2017-11-29 | 2018-03-23 | 滁州悦达实业有限公司 | Dynamic power shift gear box |
| CN107830125B (en) * | 2017-11-29 | 2023-12-05 | 滁州悦达实业有限公司 | Power shift gearbox |
| CN108940004A (en) * | 2018-07-11 | 2018-12-07 | 无锡南理工科技发展有限公司 | A kind of Mechatronic mixer and its application method |
| CN109058400A (en) * | 2018-10-31 | 2018-12-21 | 安徽江淮汽车集团股份有限公司 | A kind of reverse gear transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120809 |