CN2549711Y

CN2549711Y - Shaft driving front suspending rotary grass cutter

Info

Publication number: CN2549711Y
Application number: CN 02267687
Authority: CN
Inventors: 张敬国
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-13
Filing date: 2002-06-13
Publication date: 2003-05-14
Anticipated expiration: 2012-06-13

Abstract

The utility model relates to a shaft driving front suspending rotary grass cutter, which comprises a suspending lifting system positioned on a tractor frame, a transmission system connected with the drive output shaft of an engine, and a pair of left and right cutting devices. The number for the lifting arms and connecting rods for the suspending lifting system respectively is two in left and right arranging with the length adjustable. The lifting arms, the connecting rods, the suspending bracket and the transmission box form a parallel four connecting rod mechanism. The drive output by the engine drive output shaft is transferred to the universal drive shaft through an overrunning clutch, and the drive transferred by the universal drive shaft is transferred to a group of meshed gears through the short shaft positioned on the transmission box and transferred to the left and right cutting devices by the synchronizing shaft, thereby driving the left and right cutting devices to rotate in an inverse direction. The utility model overcomes the following disadvantages: the belt trolley transmission is likely for sliding with poor transmission reliability. The utility model can be used on big, medium and small tractor with different type having the drive output shaft vertically positioned and horizontally positioned, which is of a wide application range, high efficiency and long service life.

Description

The through-drive front mounted rotary mower

Technical field

The utility model relates to the isolated plant that is used for machine mounted on tractor, is a kind of through-drive front mounted rotary mower specifically.

Background technology

Along with China's agricultural structure is constantly adjusted, livestock breeding has obtained continuous development, and the pasture growing area constantly enlarges, and numerous peasants and herdsmen are also more and more urgent to the demand of grass making machinery.Mower kind on the market is more now, and self-propelled mower is suitable for large tracts of land grassland, grassland and mows, efficient height, handiness, and ride comfort, but mainly by foreign import, price is higher, and can only be used for herbage harvesting, function singleness; With the shuttle low mower of middle-size and small-size tractor, power consumption is little, and is simple in structure, high efficiency, but impact resistance is poor, and fragile, can only be in surface state plot operation preferably; Forward mounting belt transmission rotary mower has overcome the above two shortcoming, but belt easily skids, and reliable transmission is poor, and can only be installed on the tractor with small four wheels that adopts the single-cylinder horizontal engine, uses limited.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of through-drive front mounted rotary mower is provided, and this mower can be installed on the vertical large, medium and small tractor of putting with horizontal various models of power take-off easily.

The technical scheme that its technical problem that solves the utility model adopts is: comprise the suspension lifting system that is installed on the tractor frame beam, the transmission system and a pair of left and right sides cutter that connect engine power output shaft, its design feature is that described suspension lifting system is fixed on the tractor frame beam by suspension holdfast, lifting arm and transverse axis are linked together cutter and suspension holdfast by bearing pin, hoist cylinder lower end and suspension holdfast are hinged, the upper end spins with transverse axis, and be connected to the hydraulic pressure output of tractor hydraulic suspension by high-pressure rubber pipe, utilize the hydraulic oil control mower lifting of tractor hydraulic system; Transverse axis links together left and right sides lifting arm by axle bed, and transverse axis can rotate around axle bed, and lifting arm and connecting rod respectively have two, about arrange adjustable length, lifting arm and connecting rod and suspension holdfast, transmission case formation parallel four-bar linkage; Described transmission system is delivered on the universal drive shaft by a freewheel clutch by the power of engine power output shaft through speed change output, the power that the universal drive shaft transmission comes passes to bevel gear by the minor axis that is installed on the transmission case, distribute to then and its meshed bevel gears and gear, gear passes to the right cut cutter by the synchronizing shaft that is sleeved in the transmission case, the structure of left and right sides cutter is identical, and direction of rotation is opposite.

In order to improve the versatility of cutter, be convenient to change blade, described cutter is set with cutter shaft by being fixed on standpipe on the transmission case as skeleton in the transmission case, the upper end of cutter shaft is sleeved on bevel gear upper and lower end top and is fixing bead, and the bottom is equipped with the sliding plate hub; Knife bar, cutterhead and group grass drum are fastened on the bead, and blade is hinged on the bearing pin of knife bar, and sliding plate is fixed on the sliding plate hub and rotates freely with the sliding plate hub.

After adopting said structure; because the through-drive gearratio is reliable; having overcome belt transmission easily skids; the drawback of reliable transmission difference; the power drive system that is adopted can adapt on the vertical large, medium and small tractor of putting with horizontal various models of power take-off; applied range; the suspension lifting system that uses length-adjustable lifting arm and connecting rod to form; can adapt to the variation of tractor frame beam length; the while knife bar; cutterhead and group grass drum make annexation simplify with the connected mode of bead; be convenient to the assembling of cutter and the maintain and replace of protection blade and blade, its efficient height, long service life.

Description of drawings

Fig. 1 is a longitudinal section of the present utility model;

Fig. 2 is the through-drive front mounted rotary mower vertical view that removes transmission-case cover;

Fig. 3 is the power transmission cutaway view when being used for that tractor motive power output shaft is vertical puts.

Embodiment

Fig. 1, through-drive front mounted rotary mower shown in Figure 2 mainly are made up of cutter, suspension lifting system and transmission system.Transmission case 11 is bases of whole cutter, universal drive shaft 5 transmits the power that comes and passes to bevel gear 9 by the minor axis that is installed on the transmission case 11, distribute to then and its meshed bevel gears 8 and gear 10, gear 10 passes to the right cut cutter by the synchronizing shaft 30 that is fixed on bearing block in the transmission case, the structure of left and right sides cutter is identical, and direction of rotation is opposite.In the left cut cutter, standpipe 12 is skeletons of cutter, with bolt loam cake 13 and standpipe 12 are fixed on the transmission case 11, cutter shaft 15 with bearing fixing in it, the upper end of cutter shaft 15 is sleeved on the bevel gear 8, bead 16 is being fixed with flat key in top, lower end, and the bottom is equipped with sliding plate hub 17 with two groups of bearings, and the axle head of cutter shaft 15 is locked with locking nut; Knife bar 19, cutterhead 18 and group careless drum 14 usefulness bolted are on bead 16, and blade 21 is hinged on the bearing pin of knife bar; Rotate freely with sliding plate hub 17 on the sliding plate 20 usefulness bolt sliding plate hubs 17, play the protection cutter.The suspension lifting system is made up of suspension holdfast 2, hoist cylinder 3, lifting arm 6, transverse axis 7, connecting rod 4 etc., suspension holdfast 2 is fixed by bolts on the tractor frame beam 1, lifting arm 6 and transverse axis 7 are linked together cutter and suspension holdfast 2 by bearing pin, hoist cylinder 3 lower ends and suspension holdfast 2 are hinged, the upper end is connected with transverse axis 7 by screw thread, and be connected to the hydraulic pressure output (not drawing among the figure) of tractor hydraulic suspension by high-pressure rubber pipe, utilize the hydraulic oil control mower lifting of tractor hydraulic system; Transverse axis 7 links together left and right sides lifting arm by axle bed (not drawing among the figure), and transverse axis 7 can rotate around axle bed; Lifting arm 6 and connecting rod 4 respectively have two, about arrange adjustable length, to adapt to the variation of tractor frame beam length, lifting arm 6 and connecting rod 4 constitute parallel four-bar linkage with suspension holdfast 2, transmission case 11, make mower in lifting process, and the relative angle of cutter and tractor remains unchanged.Transmission system is according to the arrangement difference of power take-off, version is slightly different, for the tractor with small four wheels that resembles Mount Taishan-12 series, adopt the structure shown in Fig. 2 right-hand member, propulsion box 24 is installed on the gear box of tractor, the power of engine is from power take-off 27 outputs, pass to fixed conveyor axle 26 by gear 25 and gear 23 speed changes commutation back by engagement cover 22, pass to universal drive shaft shown in Figure 15 by freewheel clutch 28 again, distribute to left and right sides cutter shaft by bevel gear 9 by bevel gear 8 and gear 10 and synchronizing shaft 30 then, finish cutting operation, be set with bearing block 29 on the synchronizing shaft 30, the joint of power with separate, stir engagement cover 22 and finish by handle (not drawing among the figure) with the clutch engagement of tractor.

For large and middle tractor, power take-off is vertically exported by the tractor rear portion, transmission of power adopts structure shown in Figure 3, propulsion box 24 is installed on the tractor rear axle shell, the power of the power take-off 27 of engine reaches fixed conveyor axle 26 after by intermeshing roller gear 33,32,31 speed changes, the joint of power is finished by the output of the power on tractor clutch handle, and all the other structures are identical with the former.

Claims

1, a kind of through-drive front mounted rotary mower, comprise the suspension lifting system that is installed on the tractor frame beam (1), the transmission system and a pair of left and right sides cutter that connect engine power output shaft (27), it is characterized in that described suspension lifting system is fixed on the tractor frame beam (1) by suspension holdfast (2), lifting arm (6) and transverse axis (7) are linked together cutter and suspension holdfast (2) by bearing pin, hoist cylinder (3) lower end and suspension holdfast (2) are hinged, the upper end spins with transverse axis (7), and be connected to the hydraulic pressure output of tractor hydraulic suspension by high-pressure rubber pipe, utilize the hydraulic oil control mower lifting of tractor hydraulic system; Transverse axis (7) links together left and right sides lifting arm by axle bed, transverse axis (7) can rotate around axle bed, and lifting arm (6) and connecting rod (4) respectively have two, about arrange, adjustable length, lifting arm (6) and connecting rod (4) constitute parallel four-bar linkage with suspension holdfast (2), transmission case (11); Described transmission system is delivered on the universal drive shaft (5) by a freewheel clutch (28) by the power of engine power output shaft (27) through speed change output, the power that universal drive shaft (5) transmission is come passes to bevel gear (9) by the minor axis that is installed on the transmission case (11), distribute to then and its meshed bevel gears (8) and gear (10), gear (10) passes to the right cut cutter by the synchronizing shaft (30) that is sleeved in the transmission case, the structure of left and right sides cutter is identical, and direction of rotation is opposite.

2, through-drive front mounted rotary mower according to claim 1, it is characterized in that described cutter is by being fixed on standpipe (12) on the transmission case (11) as skeleton, be set with cutter shaft (15) in the transmission case (11), the upper end of cutter shaft (15) is sleeved on bevel gear (8) upper and lower end top and is fixing bead (16), and the bottom is equipped with sliding plate hub (17); Knife bar (19), cutterhead (18) and group grass drum (14) are fastened on the bead (16), and blade (21) is hinged on the bearing pin of knife bar, and sliding plate (20) is fixed on sliding plate hub (17) and upward rotates freely with sliding plate hub (17).