CN201700139U

CN201700139U - Transmission device of rotary cultivator

Info

Publication number: CN201700139U
Application number: CN2010201785923U
Authority: CN
Inventors: 颜志江
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-29
Filing date: 2010-04-29
Publication date: 2011-01-12
Anticipated expiration: 2020-04-29

Abstract

The utility model discloses a transmission device of a rotary cultivator, comprising a gasoline engine (2), a belt transmission mechanism (10), a belt cover (8), a transmission box body (5), a shifting mechanism (11) and a chain transmission mechanism (12), wherein the shifting mechanism (11) comprises a poking block (28), a reverse gear (29) capable of being poked leftward and rightward, a forward gear (27), a reverse-gear transition gear (19) arranged movably, a reverse-gear middle gear (17) fixed on a middle shaft (24), a forward-gear middle shaft (23) and a middle shaft output gear (31); the reverse-gear transition gear (19) is meshed with the reverse-gear middle gear (17); the middle shaft output gear (31) is meshed with a chain wheel shaft gear (22); and the reverse gear (29) corresponds to the reverse-gear transition gear (19) and the forward gear (27) corresponds to forward-gear middle shaft (23). By the adoption of the structure, the transmission device of the rotary cultivator has the advantages of simple structure, light weight, low production cost, convenient operation and the like.

Description

The rotovator transmission device

Technical field

The utility model relates to a kind of actuating unit of small-sized rotovator, particularly a kind of small-sized rotovator.

Background technology

Rotovator is various in style, structure is different, is mainly used in loosening the soil of soils such as field, nonirrigated farmland, garden, orchard, booth.Along with economic growth and social progress, farm machinery develops rapidly, and rotovator progressively becomes one of rural area, garden management farm machinery commonly used, progressively replaces the work pattern of original artificial or farm cattle.The actuating unit of existing rotovator generally is to drive multi-stage gear by the longitudinal belt transmission, drive output shaft and plough cutter work by gear drive again, in use have the following disadvantages: the one, the gear transmission structure complexity, the requirement on machining accuracy height, size is difficult to guarantee that the problem that occurs in the assembling process is many; The 2nd, volume is big, Heavy Weight, and the production cost height moves inconvenience, is unfavorable for the lightness of product; The 3rd, rotovator advances and falls back the switching mechanism complexity, inconvenient operation.For this reason, many manufacturers and knowledgeable people have carried out the R and D of fruitful ground, but do not have rational product to emerge so far as yet.

Summary of the invention

For overcoming the problems referred to above that existing rotovator exists, the purpose of this utility model provide a kind of simple and reasonable, volume is little, in light weight, rotovator transmission device that production cost is low, easy to operate.

The technical scheme that its technical problem that solves the utility model adopts, it comprises gasoline engine, belt gear, belt housing, transmission case body, gearshift, chain-drive mechanism, the belt cover cap is on belt gear, gearshift and chain-drive mechanism are installed on the transmission case body, and chain-drive mechanism comprises the hinge wheel that is fixed on the output shaft, be fixed on minor sprocket and sprocket shaft gear on the sprocket shaft, be connected the chain between minor sprocket and the hinge wheel; Described gearshift comprises the shifting block that is arranged on the declutch shift shaft, reverse gear and the forward gear gear that can stir about on the power shaft, be movably arranged on the transition gear that reverses gear on the sprocket shaft, be fixed on reverse idler gear and forward gear idler gear and jackshaft output gear on the jackshaft, reverse gear transition gear and reverse idler gear the engagement, jackshaft output gear and sprocket shaft gears engaged, reverse gear is corresponding with the transition gear that reverses gear, and the forward gear gear is corresponding with the forward gear idler gear.

Described reverse gear and forward gear gear be conjoined structure and with the power shaft spline fitted.

Described belt gear comprises the small belt pulley that is fixed on the output shaft of gasoline engine, be fixed on big belt pulley on the power shaft, be connected the belt between small belt pulley and the big belt pulley and the regulating wheel of adjustable straps degree of tightness.

After adopting said structure, the utility model compared with prior art has following advantage: the one, and power passes through belt gear, the chain-drive mechanism transmission drives output shaft and ploughs cutter work, and is simple in structure, in light weight, processing is easy for installation; The 2nd, rotovator advances and falls back simple in structurely, changes efficient and conveniently, and production cost is low.

Description of drawings

Fig. 1 is for adopting product schematic diagram of the present utility model.

Fig. 2 is the utility model power transmission arrangment schematic diagram.

Fig. 3 is the utility model drive mechanism schematic diagram.

Embodiment

Fig. 1, Fig. 2 and shown in Figure 3, specific embodiments for a kind of rotovator transmission device of the utility model, rotovator is mainly by handrail 1, gasoline engine 2, support 3, wheel 4, transmission case body 5, rotary blade 6, dashboard 7, belt housing 8, clutch handle 9 is formed, the rotovator transmission device comprises gasoline engine 2, belt gear 10, belt housing 8, transmission case body 5, gearshift 11, chain-drive mechanism 12, belt housing 8 covers on belt gear 10, gearshift 11 and chain-drive mechanism 12 are installed on the transmission case body 5, and chain-drive mechanism 12 comprises the hinge wheel 32 that is fixed on the output shaft 21, be fixed on minor sprocket 30 and sprocket shaft gear 22 on the sprocket shaft 18, be connected the chain 20 between minor sprocket 30 and the hinge wheel 32; Described gearshift 11 comprises the shifting block 28 that is arranged on the declutch shift shaft 26, reverse gear 29 and the forward gear gear 27 that can stir about on the power shaft 25, be movably arranged on the transition gear 19 that reverses gear on the sprocket shaft 18, be fixed on reverse idler gear 17 and forward gear idler gear 23 and jackshaft output gear 31 on the jackshaft 24, reverse gear 29 and forward gear gear 27 be conjoined structure and with power shaft 25 spline fitted, the transition gear 19 that reverses gear meshes with reverse idler gear 17,

jackshaft output gear

31 and 22 engagements of sprocket shaft gear, reverse gear 29 is corresponding with the transition gear 19 that reverses gear, and forward gear gear 27 is corresponding with forward gear idler gear 23.Described belt gear 10 comprises the small belt pulley 14 that is fixed on the output shaft of gasoline engine, be fixed on big belt pulley 16 on the power shaft 25, be connected the belt 13 between small belt pulley 14 and the big belt pulley 16 and the regulating wheel 15 of adjustable straps 13 degrees of tightness.

The utility model transmission process is as follows, when rotovator advances, operation clutch handle 9 makes the shifting block 28 on the declutch shift shaft 26 stir reverse gear 29 and forward gear gear 27, makes

forward gear gear

27 and 23 engagements of forward gear idler gear, and reverse gear 29 separates with the transition gear 19 that reverses gear.During work, gasoline engine 2 power drive power shaft 25 and forward gear gear 27 and reverse gear 29 by belt gear 10 and rotate, forward gear gear 27 drives forward gear idler gear 23, forward gear idler gear 23 drives the jackshaft output gear 31 of coaxial setting, jackshaft output gear 31 drives sprocket shaft gear 22, sprocket shaft gear 22 drives the minor sprocket 30 of coaxial setting, minor sprocket 30 drives hinge wheel 32 by chain 20, hinge wheel 32 drives output shaft 21, and final output shaft 21 drives rotary blade 7 rotations and advances; Meanwhile, the reverse idler gear on the jackshaft 24 17 drives the transition gear 19 that reverses gear around sprocket shaft 18 idle running.

When rotovator fell back, operation clutch handle 9 made the shifting block 28 on the declutch shift shaft 26 stir reverse gear 29 and forward gear gear 27, made the reverse gear 29 and transition gear 19 engagements of reversing gear, and forward gear gear 27 separates with forward gear idler gear 23.During work, gasoline engine 2 power drive power shaft 25 by belt gear 10 and reverse gear 29 rotates, reverse gear 29 drives the transition gear 19 that reverses gear, the transition gear 19 that reverses gear drives reverse idler gear 17, reverse idler gear 17 drives the jackshaft output gear 31 of coaxial setting, jackshaft output gear 31 drives sprocket shaft gear 22, sprocket shaft gear 22 drives the minor sprocket 30 of coaxial setting, minor sprocket 30 drives hinge wheel 32 by chain 20, hinge wheel 32 drives output shaft 21, and final output shaft 21 drives rotary blade 7 rotations and falls back.

Claims

1. rotovator transmission device, comprise gasoline engine (2), belt gear (10), belt housing (8), transmission case body (5), gearshift (11), chain-drive mechanism (12), belt housing (8) covers on belt gear (10), gearshift (11) and chain-drive mechanism (12) are installed on the transmission case body (5), and chain-drive mechanism (12) comprises the hinge wheel (32) that is fixed on the output shaft (21), be fixed on minor sprocket (30) and sprocket shaft gear (22) on the sprocket shaft (18), be connected the chain (20) between minor sprocket (30) and the hinge wheel (32); It is characterized in that: described gearshift (11) comprises the shifting block (28) that is arranged on the declutch shift shaft (26), reverse gear (29) and the forward gear gear (27) that can about power shaft (25) is gone up, stir, be movably arranged on the transition gear that reverses gear (19) on the sprocket shaft (18), be fixed on reverse idler gear (17) and forward gear idler gear (23) and jackshaft output gear (31) on the jackshaft (24), the transition gear (19) that reverses gear meshes with reverse idler gear (17), jackshaft output gear (31) and sprocket shaft gear (22) engagement, reverse gear (29) is corresponding with the transition gear that reverses gear (19), and forward gear gear (27) is corresponding with forward gear idler gear (23).

2. rotovator transmission device according to claim 1 is characterized in that: described reverse gear (29) and forward gear gear (27) for conjoined structure and with power shaft (25) spline fitted.

3. rotovator transmission device according to claim 1 and 2 is characterized in that: described belt gear (10) comprises the small belt pulley (14) that is fixed on the output shaft of gasoline engine, be fixed on big belt pulley (16) on the power shaft (25), be connected the belt (13) between small belt pulley (14) and the big belt pulley (16) and the regulating wheel (15) of adjustable straps (13) degree of tightness.