CN211090507U - Three-shaft output gearbox for rotary cultivator - Google Patents

Abstract

The utility model discloses a triaxial output gearbox for rotary cultivator, the box is connected by the last branch case that is located in the frame top and the lower branch case that is located in the frame below and constitutes, be equipped with the driving shaft with the hookup of tractor power output shaft, initiative bevel gear, with driving shaft vertically horizontal driven shaft, driven bevel gear and the first tooth of mediating in last branch incasement, be equipped with the second that meshes with the first tooth of mediating under the branch incasement and mediate the tooth, the bottom of branch case is equipped with stubble-cleaning arbor, rotary tillage arbor and hack arbor and stubble-cleaning gear, rotary tillage gear and hack gear under, stubble-cleaning gear, rotary tillage gear mesh with the second mediation tooth respectively, be equipped with respectively between rotary tillage gear and hack gear and mediate the third tooth of meshing with rotary tillage gear, hack gear respectively. The gearbox has the advantages of simple structure, high transmission efficiency, high working reliability and low failure rate, can output power for three cutter shafts by only one gearbox, and can meet the matched use requirements of the wide-tillage-width rotary cultivator.

Description

Three-shaft output gearbox for rotary cultivator

Technical Field

The utility model relates to a gearbox, in particular to a gearbox with three power output shafts for a large-tillage-width rotary cultivator.

Background

Big tilling width rotary cultivator needs to use with the supporting of high horsepower tractor, high horsepower tractor need stride the three ridges walking when the rotary tillage operation, because central gearbox installs the power take off who just can receive the tractor in rotary cultivator width direction central point, make the central gearbox of rotary cultivator correspond with the ridge position in the middle of the three ridges, therefore, when adopting central gearbox directly with power take off to the stubble-cleaning axle, during rotary tillage axle and hack axle, the drain pan of central gearbox need be less than the stubble-cleaning axle, rotary tillage axle and hack axle just can satisfy the transmission requirement, this will lead to central gearbox drain pan can bump with the ridge at the during operation, unable normal work. In the prior art, two methods are usually adopted for solving the problem, one method is to adopt transmission side boxes which can avoid ridge positions and are arranged on two sides of a rotary cultivator, a central gearbox transmits power to the transmission side box on one side through a transmission shaft above a frame, and then the transmission side boxes transmit the power to each cutter shaft below the frame from one end of each cutter shaft; the other solution is to properly increase the distance between the cutter shaft and the ground, and use the long blade to make up the defect of large distance between the cutter shaft and the ground, while the long blade has poor shock resistance in work, is easy to deform, distort or break in use, and not only affects normal operation, but also has high operation and maintenance cost.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is: aiming at the defects in the prior art, the three-shaft output gearbox for the rotary cultivator is provided, the gearbox is simple in structure, high in transmission efficiency, high in working reliability and low in failure rate, power can be output for three cutter shafts by only one gearbox, and the matched use requirement of the wide-tillage-width rotary cultivator can be met.

The technical scheme for solving the technical problem is as follows: a three-shaft output gearbox for a rotary cultivator comprises a box body and gears, wherein the box body is formed by connecting an upper box above a rack and a lower box below the rack, a driving shaft connected with a power output shaft of a tractor is arranged in the upper box, a driving bevel gear is arranged on the driving shaft, a horizontal driven shaft vertical to the driving shaft is further arranged in the upper box, a driven bevel gear meshed with the driving bevel gear and a first medium gear are arranged on the horizontal driven shaft, a second medium gear meshed with the first medium gear is arranged in the lower box, a stubble cleaning cutter shaft, a rotary tillage cutter shaft and a soil crushing cutter shaft which output power to two sides of the lower box are sequentially arranged at the bottom of the lower box from front to back along the advancing direction of the rotary cultivator, stubble cleaning gears, rotary tillage gears and soil crushing gears are respectively arranged on the stubble cleaning cutter shaft, the rotary tillage cutter shaft and the soil crushing cutter shaft, the stubble cleaning gears and the rotary tillage gears are respectively meshed with the second medium gear, a third intermediate gear which is respectively meshed with the rotary tillage gear and the soil crushing gear is arranged between the rotary tillage gear and the soil crushing gear.

As the improvement of the utility model: the central lines of the first medium teeth, the second medium teeth, the stubble cleaning gear, the rotary tillage gear and the soil crushing gear on the axial width are positioned in the same plane, and the distance from the plane to the axis of the driving shaft is 250-350 mm.

As a further improvement of the utility model: the distance from the plane to the axis of the driving shaft is 300 mm.

As the utility model discloses a further improvement again: the width of the lower sub-box in the axial direction of the driven shaft is 100-200 mm.

As a further improvement of the utility model: the width of the lower sub-box in the axial direction of the driven shaft is 150 mm.

As another improvement of the utility model: the end plate on one side of the lower sub-box is aligned with the end plate on the upper side of the lower sub-box, and the end plate on the other side of the lower sub-box is offset by a certain distance to one side of the lower sub-box which is aligned with the end plate on the upper sub-box, so that the lower sub-box is offset below the upper sub-box in the direction of the driven shaft.

As the utility model discloses preferred: the front wall and the rear wall of the upper box-separating are provided with a gearbox fixing seat plate, and a plurality of reinforcing rib plates are arranged between the gearbox fixing seat plate and the front wall and the rear wall of the upper box-separating.

Has the advantages that: the utility model discloses a three-shaft output gearbox for rotary cultivator, because adopted the gearbox includes box and gear, the box is connected by the last branch case that is located in the frame top and the lower branch case that is located in the frame below and constitutes, be equipped with the driving shaft that couples with tractor power output shaft in last branch case, be equipped with the initiative umbellate tooth on the driving shaft, still be equipped with the horizontal driven shaft perpendicular with the driving shaft in last branch case, be equipped with driven umbellate tooth and the first mesorate tooth that meshes with the initiative umbellate tooth on the horizontal driven shaft, be equipped with the second mesorate tooth that meshes with the first mesorate tooth in the lower branch case, be equipped with stubble-cleaning arbor, rotary tillage gear and the hack arbor of downward branch case both sides output power in proper order from front to back along the rotary cultivator advancing direction in the bottom of lower branch case, be equipped with stubble-cleaning gear, rotary tillage gear and hack gear on stubble-cleaning arbor, rotary tillage, stubble-cleaning gear, rotary tillage gear are situated between the tooth and mesh with the second respectively, are equipped with the technical scheme who is situated between the tooth respectively with rotary tillage gear, the third that the hack gear meshes between rotary tillage gear and hack gear, have realized being three arbor output power simultaneously with a gearbox, accomplish the transmission with minimum gear number, consequently, the utility model discloses a triaxial output gearbox has simple structure, high transmission efficiency, and operational reliability is high, and the fault rate is low, advantages such as easy to maintain can satisfy the supporting operation requirement of wide tilling width rotary cultivator. Because the central line that has adopted first tooth, second to be situated between tooth, stubble-cleaning gear, rotary tillage gear and hack gear on the axial width is located the coplanar to rationally inject the distance of this plane to driving shaft axis, make the utility model discloses a ridge platform in the middle of stubble-cleaning gear, rotary tillage gear and hack gear can be avoided in the triaxial output gearbox for the rotary cultivator, directly created the condition with power output to each arbor for the realization is with lower split-box. Because the width of the lower box in the axial direction of the driven shaft is limited reasonably, and the end plate on one side of the lower box is aligned with the end plate on the upper side of the lower box, the end plate on the other side of the lower box is aligned with the end plate of the driving box by a certain offset distance, thereby the technical characteristics of the lower box below the upper box in the offset direction of the driven shaft are realized, thereby the rotary cultivator is used for the three-shaft output gearbox for the rotary cultivator, when the power is directly output to the stubble cleaning cutter shaft, the rotary cultivation cutter shaft and the soil crushing cutter shaft through the lower box, the interference of the middle ridge platform on the high-power rotary cultivator is completely avoided, the transmission efficiency is higher than that of the mode of combining the transmission side box and the through shaft in the prior art, the working stability is better, the structure is simpler, the shock resistance is stronger, and the operation and maintenance cost is. Because the technical characteristics that the gearbox fixing seat plate is arranged on the front wall and the rear wall of the upper branch box and the plurality of reinforcing rib plates are arranged between the gearbox fixing seat plate and the front wall and the rear wall of the upper branch box are adopted, the connection between the gearbox and the rotary cultivator is firmer, the severe environment resistance of the gearbox is stronger, and the impact resistance is better.

Drawings

The following will explain the three-shaft output gearbox for the rotary cultivator of the present invention in detail with reference to the attached drawings.

FIG. 1 is a sectional view of a three-shaft output transmission for a rotary cultivator according to the present invention;

fig. 2 is a plan view of the three-shaft output gearbox for the rotary cultivator of the utility model.

Detailed Description

As shown in figures 1 and 2, the utility model discloses a three-shaft output gearbox for rotary cultivator, which comprises a box body and gears, wherein the box body is formed by connecting an upper branch box 5 positioned above a frame and a lower branch box 11 positioned below the frame, a gearbox fixing seat plate 10 is arranged on the front wall and the rear wall of the upper branch box, a plurality of reinforcing ribs 9 are arranged between the gearbox fixing seat plate and the front wall and the rear wall of the upper branch box, a driving shaft 1 connected with a power output shaft of a tractor is arranged in the upper branch box, a driving bevel gear 18 is arranged on the driving shaft, a horizontal driven shaft 3 vertical to the driving shaft is also arranged in the upper branch box, a driven bevel gear 19 meshed with the driving bevel gear and a first bevel gear 4 are arranged on the horizontal driven shaft, an end plate 20 on one side of the lower branch box far away from the driving shaft is aligned with an upper branch box end plate on the side, an end plate 21 on the other side, so that the lower box is offset below the upper box in the direction of the driven shaft, the width D of the lower box in the axial direction of the driven shaft is 100-200 mm, and preferably the width of the lower box in the axial direction of the driven shaft is 150 mm.

The lower branch box is internally provided with a second medium tooth 6 meshed with the first medium tooth, the bottom of the lower branch box is sequentially provided with a stubble cleaning cutter shaft 7, a rotary tillage cutter shaft 12 and a soil crushing cutter shaft 16 which output power to two sides of the lower branch box from front to back along the advancing direction of the rotary tiller, the stubble cleaning cutter shaft, the rotary tillage cutter shaft and the soil crushing cutter shaft are respectively provided with a stubble cleaning gear 8, a rotary tillage gear 13 and a soil crushing gear 17, the stubble cleaning gear and the rotary tillage gear are respectively meshed with the second medium tooth, a third medium tooth 15 respectively meshed with the rotary tillage gear and the soil crushing gear is arranged between the rotary tillage gear and the soil crushing gear, the second medium tooth and the third medium tooth are respectively arranged in the lower branch box through corresponding medium tooth shafts (2 and 14), the central lines of the first medium tooth, the second medium tooth, the stubble cleaning gear, the rotary tillage gear and the soil crushing gear on the axial width are positioned in the same plane, the distance L from the plane to the axis is 250-350 mm, and the distance from the plane to the driving shaft axis is 300 mm.

In the foregoing embodiments, the front refers to the advancing direction of the rotary cultivator.

The utility model discloses a triaxial output gearbox for rotary cultivator improvement prior art mainly lies in the position of lower branch case and the setting of gear drive relation, consequently, does not require to concrete structures such as the bearing of gearbox, bearing frame, shaft cap and lubricating system, and these conventional structures and design belong to technical field personnel's general knowledge.

The utility model discloses a three-axis output gearbox for rotary cultivator can satisfy the rotary cultivator of 5 ridges or 3 meters above tilling width and the supporting operation requirement of the large-scale tractor more than 180 horsepower.

Claims (7)

1. The utility model provides a rotary cultivator is with triaxial output gearbox, includes box and gear, characterized by: the box body is formed by connecting an upper sub-box positioned above the frame and a lower sub-box positioned below the frame, a driving shaft connected with a power output shaft of a tractor is arranged in the upper sub-box, a driving bevel gear is arranged on the driving shaft, a horizontal driven shaft vertical to the driving shaft is also arranged in the upper sub-box, a driven bevel gear meshed with the driving bevel gear and a first medium gear are arranged on the horizontal driven shaft, a second medium gear meshed with the first medium gear is arranged in the lower sub-box, a stubble cleaning cutter shaft, a rotary tillage cutter shaft and a soil crushing cutter shaft for outputting power to two sides of the lower sub-box are sequentially arranged at the bottom of the lower sub-box from front to back along the advancing direction of the rotary cultivator, a stubble cleaning gear, a rotary tillage gear and a soil crushing gear are respectively arranged on the stubble cleaning cutter shaft, the rotary tillage cutter shaft and the soil crushing cutter shaft, the stubble cleaning gear and the rotary tillage gear are respectively meshed with the second medium gear, and a rotary tillage, And a third intermediate tooth meshed with the soil crushing gear.

2. The three-shaft output gearbox for a rotary cultivator according to claim 1, wherein: the end plate on one side of the lower sub-box is aligned with the end plate on the upper side of the lower sub-box, and the end plate on the other side of the lower sub-box is offset by a certain distance to one side of the lower sub-box which is aligned with the end plate on the upper sub-box, so that the lower sub-box is offset below the upper sub-box in the direction of the driven shaft.

3. The three-shaft output gearbox for a rotary cultivator according to claim 2, wherein: the central lines of the first medium teeth, the second medium teeth, the stubble cleaning gear, the rotary tillage gear and the soil crushing gear on the axial width are positioned in the same plane, and the distance from the plane to the axis of the driving shaft is 250-350 mm.

4. A three-shaft output gearbox for a rotary cultivator according to claim 3, wherein: the distance from the plane to the axis of the driving shaft is 300 mm.

5. A three-shaft output gearbox for a rotary cultivator according to any one of claims 1 to 4, wherein: the width of the lower sub-box in the axial direction of the driven shaft is 100-200 mm.

6. The tri-axial output gearbox for a rotary cultivator according to claim 5, wherein: the width of the lower sub-box in the axial direction of the driven shaft is 150 mm.

7. The tri-axial output gearbox for a rotary cultivator according to claim 6, wherein: the front wall and the rear wall of the upper box-separating are provided with a gearbox fixing seat plate, and a plurality of reinforcing rib plates are arranged between the gearbox fixing seat plate and the front wall and the rear wall of the upper box-separating.

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