CN102326483B

CN102326483B - Rear-wheel hydraulic driving system of combined harvester

Info

Publication number: CN102326483B
Application number: CN201110242095.4A
Authority: CN
Inventors: 覃志明
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-18
Filing date: 2011-08-18
Publication date: 2013-07-31
Anticipated expiration: 2031-08-18
Also published as: CN102326483A

Abstract

The invention relates to a rear-wheel hydraulic driving system of a combined harvester. The rear-wheel hydraulic driving system mainly comprises a hydraulic oil tank (8), a gear pump transmission case (2), a gear pump (3), a reversing valve (4), hydraulic driving wheel axle head assemblies (12), a high-low voltage oil tube and a related control mechanism. The rear-wheel hydraulic driving system provided by the invention has the characteristics that: two original wheel axle head assemblies of a rear axle are respectively replaced into the hydraulic driving wheel axle head assemblies (12), and a gear pump transmission case is arranged at an original output shaft (1) of the harvester. Rear wheel drive can be started if a front wheel slips when the harvester is in operation, thus four-wheel drive is formed, through performance of the harvester in rainy and snowy days and complex plots is greatly enhanced, and working efficiency is improved. The hydraulic driving system provided by the invention has the advantages of simple structure and low cost, can be widely applied to various combined harvesters, can be mounted before delivery of a harvester and also can be mounted by the user of the harvester; and especially the chronic problem that a mechanical rear drive is inconveniently arranged as a straw smashing device is arranged between the front wheels and the rear wheels of a corn combined harvester is solved.

Description

A kind of trailing wheel fluid power system of combine

[technical field] the present invention is a kind of fluid power system, is a kind of trailing wheel fluid power system of combine specifically.

[background technology] in May, 2005, I have invented a kind of radial type four-wheel-drive tractor of hydraulic driven trailer trailing wheel, am subjected to users' welcome deeply.In recent years, many combine users call one after another, say that the combine that they buy is the front-wheel drive rear-axle steering, this grain header is when work, when running into sleety weather or complicated ground, front driving wheel is easy to skid, and has had a strong impact on operating efficiency, in use run into many troubles, required us that the hydraulic-driven technology is applied on the rear wheel drive of combine.And according to the work characteristics of combine, the hydraulic-driven of trailing wheel is had higher requirement, the one, driving wheel is wanted " synchronously omnidistance " before and after the requirement at each gear; The 2nd, require the hydraulic-driven of trailing wheel when work can " the omnidistance use "; The 3rd, requirement " bar operation " does not promptly increase operating mechanism in addition when using the trailing wheel hydraulic-driven; The 4th, claimed structure is simple, and is cheap, durable in use, is convenient to repacking.

[summary of the invention] reequips hydraulically powered demand in order to satisfy users to the combine trailing wheel, the invention provides a kind of trailing wheel fluid power system of combine.

For solving its technical problem, the technical solution used in the present invention is: 1. this fluid power system is made up of output shaft of gear-box, hydraulic oil container, gear pump transmission case, gear pump, reversal valve, hydraulic-driven wheel shaft head assembly and oil inlet pipe, high-pressure oil pipe, oil return pipe and relevant operating mechanism; 2. two wheel shaft head assemblies of former back axle are replaced by respectively and can use hydraulically powered wheel shaft head assembly, this wheel shaft head assembly is made up of wheel axis body, oil motor, jaw clutch and operating mechanism, planetary reduction gear, wheel hub, bearing; 3. mounting teeth wheel pump transmission case on former grain header output shaft, this transmission case by casing, slide teeth, the first gap bridge tooth, two, two fixed teeth and inclined-plane tooth embedding, slip duplex tooth, the embedding of constant inclined surface tooth, the gap bridge tooth that reverses gear, one, fixedly duplex tooth, bearing, shift fork, declutch shift shaft and operating mechanism are formed; The two ends of slip duplex tooth are equipped with inclined-plane tooth embedding, the identical and modulus difference of two gear numbers of teeth; Fixedly two of the duplex tooth gears also are the identical and modulus differences of the number of teeth; The function one of this transmission case is to guarantee output shaft no matter be left-handed or dextrorotation and gear pump is same direction rotation all the time, the 2nd, and driving wheel was synchronous when each gear before and after the output oil mass that guarantees gear pump can make; During the work of gear pump transmission case, slide teeth is in and the first gap bridge tooth engagement, output shaft drives the slide teeth rotation, thereby by the first gap bridge cingulum moving two and fixed teeth rotation, fixed teeth drives slip duplex tooth and inclined-plane tooth embedding rotation by constant inclined surface tooth embedding one, thereby the big tooth spiral of one of them modulus of the fixedly duplex tooth on moving one of the big cingulum of one of them modulus of slip duplex tooth changes the rotation of driven gear pump and works; If grain header is hung when reversing gear, output shaft changes direction of rotation, by inclined-plane tooth embedding one slip duplex tooth is released when two upward fixed teeth is reversed, one side combines with the constant inclined surface tooth embedding two of two the other end and reverses, big tooth and tooth that upward fixedly one of them modulus of duplex tooth is big of one of them modulus of slip duplex tooth thrown off, make the little tooth and the gap bridge tooth engagement of reversing gear of a modulus of slip duplex tooth, the little tooth spiral of a tooth module by the fixedly duplex tooth on moving one of the gap bridge cingulum that reverses gear changes, thereby has guaranteed that gear pump is all the time towards a direction rotation; Simultaneously, by the reasonable disposition slip duplex tooth and the fixing number of teeth of duplex tooth, driving wheel was synchronous when each gear before and after the output oil mass that guarantees gear pump can make.4. install linkage additional between reversal valve and former grain header gear control stick, reversal valve can commutate simultaneously when guarantee hanging forward gear and falling back retaining, makes that rear drive sprocket and front driving wheel are equidirectional to travel.5. the separation operating mechanism of gear pump rotating box and the operating mechanism of back axle wheel spindle nose jaw clutch are extended to driver's cabin by stay cord, make things convenient for the driver to separate combination gear pump drive case and rear wheel drive device at any time.

The invention has the beneficial effects as follows: 1. owing on former grain header, installed a cover trailing wheel fluid power system additional, grain header at work, can start rear wheel drive simultaneously when skidding as front driving wheel, form four wheel drive, strengthened the through performance of grain header greatly, improved operating efficiency in sleety weather and complicated plot.2. because this fluid power system does not change any structure of former grain header, install very conveniently, following two master workers of normal condition can reequip one in one day.3. because this fluid power system is simple in structure, cheap, reequips an All-China Federation of Taiwan Compatriots and close the grain header total cost and be no more than 1.5 ten thousand yuan, only be equivalent to reequip 40% of mechanical rear-guard cost, be equivalent to reequip 25% of other imported hydraulic rear-guards.4. this fluid power system can be widely used in various combines, comprises corn combine, rice combine, combined wheat harvester; Both be fit to install when grain header factory dispatches from the factory, also be fit to grain header user repacking; The hard nut to crack of mechanical rear-guard is installed in inconvenience owing between the front and back wheel straw reducing mechanism is arranged particularly to have solved corn combine.

[description of drawings] the invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the structural representation of hydraulic-driven back axle wheel shaft head assembly.

Fig. 3, Fig. 4 are the structural representations of gear pump transmission case.

Among the figure: 1 grain header output shaft of gear-box, 2 gear pump transmission cases, 3 gear pumps, 4 reversal valves, 5 gangbar, 6, grain header gear control stick, the clutch control handle of 7 gear pump transmission cases, 8 hydraulic oil containers, 9 oil inlet pipes, 10 high-pressure oil pipes, 11 oil return pipes, 12 hydraulic-driven wheel shaft head assemblies, 13 take turns axis body, 14 oil motors, 15 jaw clutches, 16 jaw clutch operating mechanisms, 17 planetary reduction gears, 18 wheel hubs, 19 hub bearings, 20 slide teeth, 21 shift forks, 22 declutch shift shafts, 23 first gap bridge teeth, 24 fixed teeth, 25 slip duplex teeth, 26 constant inclined surface tooth embeddings two, 27 2,28 cone bearings, 29 1,30 fixing duplex teeth, the 31 gap bridge teeth that reverse gear, 32 back axle bridge tubes, 33 casings.

[embodiment] is with reference to accompanying drawing: the output shaft of gear-box (1) at former grain header is located mounting teeth wheel pump transmission case (2), go up mounting teeth wheel pump (3) at gear pump transmission case (2), the oil-in of gear pump (3) links to each other by oil inlet pipe (9) with the oil-out of hydraulic oil container (8), the oil-out of gear pump (3) links to each other by high-pressure oil pipe (10) with the oil-in of reversal valve (4) (P mouth), two oil-out (A mouths of reversal valve (4), the B mouth) respectively by two oil motors (14) on two hydraulic-driven wheel shaft head assemblies (12) on high-pressure oil pipe (10) and the back axle and connect, the oil return opening of reversal valve (4) (O mouth) links to each other with the oil return opening of hydraulic oil container (8) by oil return pipe (11).Reversal valve (4) links to each other with grain header gear control stick (6) by gangbar (5) and carries out interlock.Hydraulic-driven wheel shaft head assembly (12) is made up of wheel axis body (13), oil motor (14), jaw clutch (15) and jaw clutch operating mechanism (16), planetary reduction gear (17), wheel hub (18), hub bearing (19); Two hydraulic-driven wheel shaft head assemblies (12) are installed in the two ends of former back axle bridge tube (32) respectively and replace original wheel shaft head assembly.The output shaft of grain header gearbox (1) is meshed with slide teeth (20) in the casing (33) of gear pump transmission case (2), and slide teeth (20) links with the clutch control handle (7) of gear pump transmission case by shift fork (21), declutch shift shaft (22); Slide teeth (20) is meshed with the fixed teeth (24) of two (27) one ends by the first gap bridge tooth (23), one end of this fixed teeth (24) is provided with inclined-plane tooth embedding one, the other end of two (27) is equipped with constant inclined surface tooth embedding two (26), slip duplex tooth (25) is equipped with in the centre of two (27), the two ends of slip duplex tooth (25) are equipped with inclined-plane tooth embedding, identical and the modulus difference of two gear numbers of teeth, cone bearing (28) all is equipped with at the two ends of two (27); One end of one (29) is equipped with gear pump (3), and fixedly duplex tooth (30) is housed on one (29), and fixedly two gears of duplex tooth (30) also are the identical and modulus differences of the number of teeth; Fixedly (30) teeth that modulus is little of duplex tooth are meshed with the gap bridge tooth (31) that reverses gear.The course of work of fluid power system is: the cyclic process of a, hydraulic oil.The clutch control handle (7) of steerage gear pump drive case, make gear pump transmission case (2) driven gear pump (3) work, hydraulic oil sucks in the gear pump (3) by oil inlet pipe (9) in hydraulic oil container (8), the hydraulic oil that produces enters reversal valve (4) by high-pressure oil pipe (10), two oil-outs (A mouth or B mouth) by reversal valve (4) are after high-pressure oil pipe (10) enters oil motor (14), drive oil motor (14) rotation, hydraulic oil is got back to the B mouth or the A mouth of reversal valve (4) after by oil motor (14) again by high-pressure oil pipe (10), oil return opening and oil return pipe (11) by reversal valve (4) are got back to hydraulic oil container (8) formation loop, carry out circulation.B, oil motor (14) drive the work of (not driving) wheel.Under the situation of gear pump (3) operate as normal, the jaw clutch operating mechanism (16) of operating hydraulically operated live axle head assembly (12), make jaw clutch (15) be in binding site, oil motor (14) rotation drives wheel work by planetary reduction gear (17); The jaw clutch operating mechanism (16) of operating hydraulically operated live axle head assembly (12) makes jaw clutch (15) be in the separation point position, and oil motor (14) idle running does not drive wheel work, and wheel rotation simultaneously can instead not push away oil motor (14) yet; When handling grain header gear control stick (6), drive reversal valve (4) automatic reverse by gangbar (5) simultaneously, thereby change the flow direction of hydraulic oil in oil motor (14), make oil motor (14) thus changing direction of rotation realizes advancing of rear bridge driven wheel and falls back; When not using rear wheel drive, must make jaw clutch (15) be in the separation point position, in order to avoid increase the load that travels.The course of work of C, gear pump transmission case (2).During grain header work, the clutch control handle (7) of steerage gear pump drive case, slide teeth (20) is in and first gap bridge tooth (23) engagement, output shaft (1) drives slide teeth (20) rotation, thereby drive two (27) and fixed teeth (24) rotation by the first gap bridge tooth (23), fixed teeth (24) drives slip duplex tooth (25) and inclined-plane tooth embedding rotation by constant inclined surface tooth embedding one, and the cingulum that one of them modulus of slip duplex tooth (25) is big moves the fixedly duplex tooth (30) on (29) thereby the big tooth spiral of one of them modulus changes driven gear pump (3) rotation and works.If grain header is hung when reversing gear, output shaft (1) changes direction of rotation, when going up fixed teeth (24) counter-rotating, two (27) slip duplex tooth (25) is released by inclined-plane tooth embedding one, one side combines with the constant inclined surface tooth embedding two (26) of the other end of two (27) and reverses, make big tooth and one (29) of one of them modulus of slip duplex tooth (25) go up the fixedly big tooth disengagement of modulus of duplex tooth (30) on the other hand, make the little tooth and gap bridge tooth (31) engagement of reversing gear of a modulus of slip duplex tooth (25), the little tooth spiral of a modulus that drives the fixedly duplex tooth (30) on (29) by the gap bridge tooth (31) that reverses gear changes, thereby has guaranteed that gear pump (3) is all the time towards a direction rotation.When not needing gear pump (3) work, the clutch control handle (7) of steerage gear pump drive case then, slide teeth (20) is in not and first gap bridge tooth (23) engagement, then output shaft (1) drives slide teeth (20) idle running, and gear pump transmission case (2) is in off position with gear pump (3).

Claims

1. the trailing wheel fluid power system of a combine, it is made up of output shaft of gear-box (1), gear pump transmission case (2), gear pump (3), reversal valve (4), hydraulic oil container (8), oil inlet pipe (9), high-pressure oil pipe (10), oil return pipe (11) and hydraulic-driven wheel shaft head assembly (12) and relevant operating mechanism; Hydraulic-driven wheel shaft head assembly (12) is made up of wheel axis body (13), oil motor (14), jaw clutch (15), jaw clutch operating mechanism (16), planetary reduction gear (17), wheel hub (18), hub bearing (19); Two hydraulic-driven wheel shaft head assemblies (12) are installed in the two ends of former back axle bridge tube (32) respectively and replace original wheel shaft head assembly; It is characterized in that: described gear pump transmission case (2) is installed in output shaft of gear-box (1) and locates, by casing (33), slide teeth (20), the first gap bridge tooth (23), two (27), fixed teeth (24) and constant inclined surface tooth embedding one, slip duplex tooth (25), constant inclined surface tooth embedding two (26), the gap bridge tooth (31) that reverses gear, one (29), fixedly the clutch control handle (7) of duplex tooth (30), cone bearing (28), shift fork (21), declutch shift shaft (22) and gear pump transmission case is formed; The two ends of slip duplex tooth (25) are equipped with inclined-plane tooth embedding, the identical and modulus difference of two gear numbers of teeth; Fixedly two gears of duplex tooth (30) also are the identical and modulus differences of the number of teeth; During gear pump transmission case (2) work, slide teeth (20) is in and first gap bridge tooth (23) engagement, output shaft (1) drives slide teeth (20) rotation, thereby drive two (27) and fixed teeth (24) rotation by the first gap bridge tooth (23), fixed teeth (24) drives slip duplex tooth (25) and inclined-plane tooth embedding rotation by constant inclined surface tooth embedding one, the fixedly duplex tooth (30) on the big cingulum moving (29) of one of them modulus of slip duplex tooth (25) thus the big tooth spiral of one of them modulus change driven gear pump (3) rotation and work; If grain header is hung when reversing gear, output shaft (1) changes direction of rotation, when going up fixed teeth (24) counter-rotating, two (27) slip duplex tooth (25) is released by inclined-plane tooth embedding one, one side combines with the constant inclined surface tooth embedding two (26) of the other end of two (27) and reverses, make big tooth and one (29) of one of them modulus of slip duplex tooth (25) go up the fixedly big tooth disengagement of one of them modulus of duplex tooth (30) on the other hand, make the little tooth and gap bridge tooth (31) engagement of reversing gear of a modulus of slip duplex tooth (25), the little tooth spiral of a modulus that drives the fixedly duplex tooth (30) on (29) by the gap bridge tooth (31) that reverses gear changes, thereby has guaranteed that gear pump (3) is all the time towards a direction rotation; Simultaneously, by the reasonable disposition slip duplex tooth (25) and the fixing number of teeth of duplex tooth (30), driving wheel was synchronous when each gear before and after the output oil mass that guarantees gear pump (3) can make.