CN201888101U

CN201888101U - Gear box of harvesting machine

Info

Publication number: CN201888101U
Application number: CN2010205907703U
Authority: CN
Inventors: 徐章其; 党睿
Original assignee: SIFANG GROUP CO ZHEJIANG
Current assignee: SIFANG GROUP CO ZHEJIANG
Priority date: 2010-10-30
Filing date: 2010-10-30
Publication date: 2011-07-06
Anticipated expiration: 2020-10-30

Abstract

The utility model discloses a gear box of a harvesting machine, which comprises a box body (1) and a variable speed transmission unit, a steering brake unit and a driving unit, wherein the variable speed transmission unit, the steering brake unit and the driving unit are arranged on the box body (1), the variable speed transmission unit comprises a clutch shaft (3), a second shaft (9), a main variable speed shaft (11), a middle shaft (12) and a reverse gear shaft (43), a high-low gear double-link sliding gear (33) is sheathed on the clutch shaft (3), a second gear driving gear (40), a third gear driving gear (41), a first gear driving gear (30) and a reverse-gear gear (29) are arranged on the second shaft (9), the main variable speed shaft (11) is provided with a central driving gear (26), a second and third gear double-link sliding gear (35) and a first reverse gear sliding gear (28) are respectively sheathed at both sides of the main variable speed shaft (11), the middle shaft (12) is provided with a middle gear (25), and a reverse gear middle gear (42) is arranged on the reverse gear shaft (43). After the adoption of the structure, the gear box has the advantages of simple and reasonable structure, low manufacture cost, stable and reliable performance and the like and is simple to operate and use and convenient to maintain.

Description

The grain header gearbox

Technical field

The utility model relates to a kind of agricultural machinery, particularly a kind of improvement of self-propelled harvester transmission assembly.

Background technology

China is the first in the world populous nation, also be a large agricultural country simultaneously, along with the national economy fast development, living standards of the people are maked rapid progress, country constantly increases the input of agricultural and agricultural machinery subsidy, and the variation of matter has taken place original work general layout, and modern agricultural machinery product is more accepted by vast farmers, the particularly extensive use of combine has alleviated peasant burden greatly.But current agricultural mechanical technology level is ripe not enough, adds the complexity of harvester operation operating mode, and the farm machinery successive exposure goes out problems, and operating efficiency decreases.Wherein, grain header gearbox problem is particularly outstanding, is mainly reflected in: the first, and each layout is reasonable inadequately on the casing, and driving torque is inhomogeneous, causes the casing poor reliability, and off-axis often takes place, casing division phenomenon.The second, because the grain header total quality is bigger, friction plate diameter that the gearbox brake device uses and the design of sheet number are reasonable inadequately, and it is dumb to cause grain header to turn to.The 3rd, it is numerous with gear to adorn axle in the gearbox body, the assembly relation compactness, and this just requires box shape reasonable in design, and present gearbox is perfect not enough in this respect, causes the gearbox body maintenance inconvenient.For this reason, many manufacturers and knowledgeable people develop and manufacture experimently at the problems referred to above, but do not have comparatively desirable product to emerge so far as yet.

Summary of the invention

For overcoming existing grain header gearbox above shortcomings, the purpose of this utility model provides a kind of simple and reasonable, low cost of manufacture, grain header gearbox stable and reliable for performance, easy for operation.

The technical scheme that its technical problem that solves the utility model adopts, it comprises casing and is arranged on speed change gear unit on the casing, braking in a turn unit and driver element, described speed change gear unit comprises the main shift lever that is arranged on the gear shift cover, secondary gear lever and the clutch shaft that is arranged on the casing, second, main variable-speed shaft, jackshaft, reverse gear shaft, be arranged with the high to low gear double crosslinking sliding gear on the clutch shaft, be provided with II on second successively, III, I retaining driving gear and reverse gear, the centre of main variable-speed shaft is provided with central driving gear, the both sides cover sets up II separately, III retaining double crosslinking sliding gear and the I shifting slide gear that reverses gear, the centre of jackshaft is provided with idler gear, reverse gear shaft is provided with reverse idler gear, main shift lever connects II, III retaining shift fork and I back fork, II, III retaining shift fork and II, III retaining double crosslinking sliding gear cooperates, I back fork and the I shifting slide gear that reverses gear cooperates, secondary gear lever auxiliary connection gear shift fork, secondary gear shift fork is arranged on the auxiliary variable speed fork-lever shaft; The high to low gear double crosslinking sliding gear cooperates with I, III retaining driving gear successively, II, III retaining double crosslinking sliding gear cooperates with II, III retaining driving gear successively, I reverses gear shifting slide gear when advancing and the engagement of I retaining driving gear, I reverses gear shifting slide gear when retreating and reverse idler gear engagement, reverse idler gear and reverse gear engagement, idler gear and the engagement of central driving gear.

Described braking in a turn unit comprises braking in a turn axle, central driver gear, two tooth sectors, the two groups of brakes that are arranged on the casing and is arranged on braking in a turn shift fork on the gearbox protecgulum, central driver gear is fixed on the centre of braking in a turn axle, on the braking in a turn axle of central driver gear both sides, set up tooth sector and brake successively separately, central driver gear and idler gear engagement, two tooth sector correspondences are closed with central driver gear tooth scarf, and the braking in a turn shift fork is corresponding to be cooperated with two tooth sectors.

Described driver element comprises deboost axle, the left and right sides driving shaft that is arranged on the casing, deboost axle is provided with two reduction gearing and two reduction pinion teeths, reduction gearing and reduction pinion teeth embed mutually and are connected as a single entity, deboost axle between two reduction gearing is provided with pressure bearing and spacer, be arranged with driven wheel on the driving shaft of the left and right sides, two reduction gearing corresponding with two tooth sectors engagements, two reduction pinion teeths corresponding with left and right sides driving shaft on the driven wheel engagement.

The window size that described gearbox protecgulum cooperates with casing is greater than the braking in a turn unit.

After adopting said structure, following advantage or effect are arranged compared with the prior art: the one, guaranteeing that the complete machine serviceability is better than on the basis of old product, at the complexity of harvester operation operating mode, designs in box shape, gear and axle wait the aspect of arranging of parts, have all done the reasonable optimizing design; The 2nd, thicken the wall thickness of casing the latter half, make bearing capacity raising, the strength-enhanced of casing; The 3rd, enlarge braking in a turn friction plate diameter, it is more flexible that body is turned to; The 4th, reduction gearing and reduction pinion teeth adopt the integral form that embeds mutually, make Gear Processing convenient, and transmission rapidly, flexibly; The 5th, the braking in a turn axle assembly can directly take out from casing protecgulum window, makes the both convenient fork of gearbox maintenance quick.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A partial sectional view of Fig. 1.

Fig. 3 is the C-C partial sectional view of Fig. 1.

1 casing wherein, 2 gearbox bonnets, 3 clutch shafts, 4 gear shift covers, 5 secondary gear levers, 6 main shift levers, 7II, III keeps off shift fork, 8I back fork, 9 second, 10II, III keeps off declutch shift shaft, 11 main variable-speed shafts, 12 jackshafts, 13 braking in a turn shift forks, 14 gearbox protecgulums, 15 braking in a turn axles, 16 deboost axles, 17 right driving axles, 18 left driving shafts, 19 spacers, 20 reduction pinion teeths, 21 reduction gearing, 22 tooth sectors, 23 springs, 24 central driver gears, 25 idler gears, 26 central transmission gears, the 28I shifting slide gear that reverses gear, 29 reverse gears, 30I keeps off driving gear, 31 bearings, 32 auxiliary variable speed fork-lever shafts, 33 high to low gear double crosslinking sliding gears, 34 secondary gear shift forks, 35II, III keeps off double crosslinking sliding gear, 36. brakes, 37 pressure bearings, 38 driven wheels, 39 drive-shaft tunnels, 40II keeps off driving gear, 41III keeps off driving gear, 42 reverse idler gears, 43 retaining shelves axles.

Embodiment

Fig. 1, Fig. 2 and shown in Figure 3, specific embodiments for a kind of grain header gearbox of the utility model, it comprises casing 1, gearbox bonnet 2, gearbox protecgulum 14 and be arranged on speed change gear unit on the casing 1, braking in a turn unit and driver element, described speed change gear unit comprises the main shift lever 6 that is arranged on the gear shift cover 4, secondary gear lever 5 and the clutch shaft 3 that is arranged on the casing 1, second 9, main variable-speed shaft 11, jackshaft 12, reverse gear shaft 43, be arranged with high to low gear double crosslinking sliding gear 33 on the clutch shaft 3, be provided with II on second 9 successively, III, I keeps off

driving gear

40,41,30 and reverse gear 29, the centre of main variable-speed shaft 11 is provided with central driving gear 26, the both sides cover sets up II separately, III retaining double crosslinking sliding gear 35 and the I shifting slide gear 28 that reverses gear, the centre of jackshaft 12 is provided with idler gear 25, reverse gear shaft 43 is provided with reverse idler gear 42, main shift lever 6 connects II, III retaining shift fork 7 and I back fork 8, II, III retaining shift fork 7 and I back fork 8 are arranged on II, on the III retaining declutch shift shaft 10, II, III retaining shift fork 7 and II, III retaining double crosslinking sliding gear 35 cooperates, I back fork 8 and the I shifting slide gear 28 that reverses gear cooperates, secondary gear lever 5 auxiliary connection gear shift forks 34, secondary gear shift fork 34 is arranged on the auxiliary variable speed fork-lever shaft 32; High to low gear double crosslinking sliding gear 33 cooperates with I, III retaining

driving gear

30,41 successively, II, III retaining double crosslinking sliding gear 35 cooperates with II, III retaining

driving gear

40,41 successively, I reverses gear shifting slide gear 28 when advancing and 30 engagements of I retaining driving gear, I reverses gear shifting slide gear 28 when retreating and reverse idler gear 42 engagement, reverse idler gear 42 and reverse gear 29 engagements, idler gear 25 and central driving gear 26 engagements.

Described braking in a turn unit comprises the braking in a turn axle 15 that is arranged on the casing 1, central driver gear 24, two tooth sectors 22, two groups of brakes 36, two springs 23 and be arranged on braking in a turn shift fork 13 on the gearbox protecgulum 14, central driver gear 24 is fixed on the centre of braking in a turn axle 15, on the braking in a turn axle 15 of central driver gear 24 both sides, set up tooth sector 22 successively separately, brake 36 and spring 23, central driver gear 24 and idler gear 25 engagements, two tooth sector 22 correspondences are closed with central driver gear 24 tooth scarves, braking in a turn shift fork 13 correspondences cooperate with two tooth sectors 22, leave what position of youngster of assembling hydraulic cylinder on the gearbox protecgulum 14, realize fluid-link steering, the window size that described gearbox protecgulum 14 cooperates with casing 1 is greater than the braking in a turn unit, and the braking in a turn unit can take out from the window of gearbox protecgulum 14.

Described driver element comprises deboost axle 16, the left and right sides driving shaft 18,17 that is arranged on the casing 1, deboost axle 16 is provided with two reduction gearing 21 and two reduction pinion teeths 20, reduction gearing 21 embeds mutually with reduction pinion teeth 20 and is connected as a single entity, deboost axle 16 between two reduction gearing 21 is provided with pressure bearing 37 and spacer 19, be arranged with driven wheel 38 on the left and right sides driving shaft 18,17, two reduction gearing 21 corresponding with 22 engagements of two tooth sectors, two reduction pinion teeths 20 corresponding with left and right sides driving shaft 18,17 on driven wheel 38 engagements.

Main shift lever 6 is handled I reverse gear shifting slide gear 28 and II, III retaining double crosslinking sliding gear 35, and secondary gear lever 5 is handled high to low gear double crosslinking sliding gears 33, makes facility realize the retaining that retreats of the forward gear of six different rotating speeds and two different rotating speeds.Turning to of facility is by rotating braking in a turn shift fork 13 realizations on the gearbox protecgulum 14, when when a side is rotated braking in a turn shift fork 13, braking in a turn shift fork 13 promotes tooth sector 22 disengagings of this side and the tooth embedding engagement of central driver gear 24, the tooth sector 22 of this side stops operating, thereby realize rotation to this side, turning in like manner of opposite side no longer repeated at this.

Claims

1. grain header gearbox, comprise casing (1) and be arranged on speed change gear unit on the casing (1), braking in a turn unit and driver element, it is characterized in that: described speed change gear unit comprises the main shift lever (6) that is arranged on the gear shift cover (4), secondary gear lever (5) and be arranged on clutch shaft (3) on the casing (1), second (9), main variable-speed shaft (11), jackshaft (12), reverse gear shaft (43), be arranged with high to low gear double crosslinking sliding gear (33) on the clutch shaft (3), be provided with II successively on second (9), III, I keeps off driving gear (40,41,30) and reverse gear (29), the centre of main variable-speed shaft (11) is provided with central driving gear (26), the both sides cover sets up II separately, III retaining double crosslinking sliding gear (35) and the I shifting slide gear (28) that reverses gear, the centre of jackshaft (12) is provided with idler gear (25), reverse gear shaft (43) is provided with reverse idler gear (42), main shift lever (6) connects II, III retaining shift fork (7) and I back fork (8), II, III retaining shift fork (7) and II, III retaining double crosslinking sliding gear (35) cooperates, I back fork (8) and the I shifting slide gear (28) that reverses gear cooperates, secondary gear lever (5) auxiliary connection gear shift fork (34), secondary gear shift fork (34) is arranged on the auxiliary variable speed fork-lever shaft (32); High to low gear double crosslinking sliding gear (33) cooperates with I, III retaining driving gear (30,41) successively, II, III retaining double crosslinking sliding gear (35) cooperates with II, III retaining driving gear (40,41) successively, I reverses gear shifting slide gear (28) when advancing and I retaining driving gear (30) engagement, I reverses gear shifting slide gear (28) when retreating and reverse idler gear (42) engagement, reverse idler gear (42) and reverse gear (29) engagement, idler gear (25) and central driving gear (26) engagement.

2. grain header gearbox according to claim 1, it is characterized in that: described braking in a turn unit comprises the braking in a turn axle (15) that is arranged on the casing (1), central driver gear (24), two tooth sectors (22), two groups of brakes (36) and be arranged on braking in a turn shift fork (13) on the gearbox protecgulum (14), central driver gear (24) is fixed on the centre of braking in a turn axle (15), on the braking in a turn axle (15) of central driver gear (24) both sides, set up tooth sector (22) and brake (36) successively separately, central driver gear (24) and idler gear (25) engagement, two tooth sectors (22) are corresponding to be closed with central driver gear (24) tooth scarf, and braking in a turn shift fork (13) is corresponding to be cooperated with two tooth sectors (22).

3. grain header gearbox according to claim 1 and 2, it is characterized in that: described driver element comprises the deboost axle (16) that is arranged on the casing (1), left and right sides driving shaft (18,17), deboost axle (16) is provided with two reduction gearing (21) and two reduction pinion teeths (20), reduction gearing (21) embeds mutually with reduction pinion teeth (20) and is connected as a single entity, deboost axle (16) between two reduction gearing (21) is provided with pressure bearing (37) and spacer (19), left and right sides driving shaft (18,17) be arranged with driven wheel (38) on, two reduction gearing (21) are corresponding to be meshed with two tooth sectors (22), the corresponding and left and right sides driving shaft (18 of two reduction pinion teeths (20), 17) driven wheel on (38) engagement.

4. grain header gearbox according to claim 3 is characterized in that: the window size that described gearbox protecgulum (14) cooperates with casing (1) is greater than the braking in a turn unit.