CN-121989672-A - Small-sized agricultural machine

CN121989672ACN 121989672 ACN121989672 ACN 121989672ACN-121989672-A

Abstract

The invention discloses a small farm machine, which comprises a frame, an engine assembly, a clutch assembly and a gearbox assembly, wherein the engine assembly is arranged on the frame, power is input to a gearbox power input shaft of the gearbox assembly through a clutch assembly by the engine assembly through a power output shaft of the engine assembly, the engine assembly comprises an engine box body, the clutch assembly comprises a clutch box body, the gearbox assembly comprises a gearbox box body, a transmission axis of the clutch assembly is deviated from the engine power output shaft axis and the gearbox power input shaft axis, the clutch box body is independently assembled on the engine box body and the gearbox box body, the clutch assembly position can be flexibly designed, the arrangement of other functional components is possible, the arrangement flexibility of the whole machine is improved, the deviated clutch assembly can improve the maintenance convenience of the whole machine, the maintenance cost and time are saved, the farm machine can quickly recover the operation, and the problem that the farm machine cannot be maintained due to site limitation is effectively solved.

Inventors

LUO YUYUAN
WANG JILONG

Assignees

重庆隆旺机电有限责任公司
重庆美澳机械制造有限公司

Dates

Publication Date: 20260508
Application Date: 20260310

Claims (10)

1. The small-sized agricultural machine is characterized by comprising a frame, an engine assembly, a clutch assembly and a gearbox assembly, wherein the engine assembly, the clutch assembly and the gearbox assembly are arranged on the frame; The engine assembly inputs power to a gearbox power input shaft of the gearbox assembly through the clutch assembly through an engine power output shaft; The engine assembly comprises an engine box body, the clutch assembly comprises a clutch box body, and the gearbox assembly comprises a gearbox box body; The clutch housing is positioned at a location derived from the transmission axis of the clutch assembly being offset from the axis of the engine power output shaft and the axis of the transmission power input shaft.
2. The small farm machine of claim 1, wherein the clutch assembly further comprises a clutch within the clutch housing, the engine power take off shaft transmitting power to the clutch via a first drive pair and the clutch transmitting power to the transmission power input shaft via a second drive pair such that the transmission axis of the clutch assembly is offset from the axis of the engine power take off shaft and the axis of the transmission power input shaft.
3. The small agricultural machine of claim 1, wherein the transmission axis of the clutch assembly is offset from the axis of the power output shaft of the engine assembly and the axis of the power input shaft of the transmission assembly by: The transmission axis of the clutch assembly is parallel to the axis of the power output shaft of the engine assembly and the axis of the power input shaft of the gearbox assembly, or the transmission axis of the clutch assembly is spatially perpendicular to the axis of the power output shaft of the engine assembly and the axis of the power input shaft of the gearbox assembly.
4. The small agricultural machine of claim 2, wherein the clutch housing includes a base housing and a cover that covers an opening in the base housing, the cover being exposed to an operative field of view for removal and installation, the opening being sized to adequately install and remove the clutch.
5. The small agricultural machine of claim 4, wherein the first end of the base housing is integrally formed with the engine housing and the second end is detachably connected to the gearbox housing; or the first end of the basic box body is detachably connected with the engine box body, and the second end of the basic box body is integrally formed with the gearbox box body; Or the first end of the basic box body is detachably connected with the engine box body, and the second end of the basic box body is detachably connected with the gearbox box body.
6. The small agricultural machine of claim 4, wherein the transmission axis of the clutch assembly is parallel to the engine power take off axis and the transmission power input axis; And the transmission axis of the clutch assembly is positioned above the engine power output shaft axis and the gearbox power input shaft axis, so that the clutch box body is eccentric relative to the engine power output shaft axis and the gearbox power input shaft axis to form a box body eccentric part, and the box body eccentric part is positioned above the engine power output shaft axis and the gearbox power input shaft axis.
7. The small farm machine according to claim 4, wherein the transmission axis of the clutch assembly is spatially perpendicular to the engine power output shaft axis and the gearbox power input shaft axis; the clutch is positioned above the engine power output shaft axis and the transmission power input shaft axis, and the clutch case is formed to be eccentric with respect to the engine power output shaft axis and the transmission power input shaft axis, and the case eccentric is positioned above the engine power output shaft axis and the transmission power input shaft axis.
8. The small agricultural machine of claim 6 or 7, wherein the clutch housing is disposed so as to avoid functional parts on the engine with respect to a housing eccentric portion formed by the eccentricity of the engine power output shaft axis and the transmission power input shaft axis.
9. The small agricultural machine of claim 8, wherein the opening of the base housing is located at the top and the cover covers the opening to form a portion of the housing eccentric; or the opening of the basic box body is positioned at one side close to the gearbox body.
10. The small agricultural machine of claim 1, wherein the gearbox assembly is located on a front side of the engine assembly; The axis of the power input shaft of the gearbox is deviated from the axis of the power output shaft of the engine, so that the gearbox is sunk by a set size relative to the engine box, and functional equipment is arranged in the upper space of the gearbox; Or the axis of the power input shaft of the gearbox is coaxial with the axis of the power output shaft of the engine, the first end of the basic box body is detachably connected with the box body of the engine, and the second end of the basic box body is detachably connected with the box body of the gearbox, so that the basic box body can be connected with the box body of the engine and the box body of the gearbox at any angle.

Description

Small-sized agricultural machine Technical Field The invention relates to the field of agricultural machinery, in particular to a small-sized agricultural machinery. Background At present, agricultural machinery such as a hand mini-tiller, a riding mini-tiller and a small tractor is commonly used as a power transmission system of the hand mini-tiller, the riding mini-tiller and the small tractor, and the power transmission system is directly connected with a gearbox. The clutch is built-in installed between the engine and the transmission as a key component for achieving power engagement and disengagement. However, the clutch has quick wear and high failure rate during field operation, belongs to typical vulnerable parts and needs to be maintained or replaced regularly, and once the clutch is damaged, the engine and the gearbox are separated to be contacted and maintained or replaced, so that the maintenance operation is complicated. The faults often occur in the field, operators need to disassemble the whole power assembly in the field with severe environment, the labor intensity is high, and the operation is difficult to implement due to the limitation of the field. In addition, for the machine type with larger volume and weight (such as riding mini-tiller), the field cannot be disassembled, and the whole machine needs to be transported to a maintenance point by using power equipment such as a crane or a truck, so that the maintenance cost is greatly increased, and the long-time machine halt seriously delays the farming season. Therefore, in order to solve the above problems, a small-sized agricultural machine is needed, which can improve the convenience of disassembling the clutch in the whole machine, reduce the difficulty of maintaining or replacing the clutch, and enable the field to be maintained quickly, thereby reducing the downtime and maintenance cost. Disclosure of Invention In view of the above, the invention aims to overcome the defects in the prior art, and provide a small-sized agricultural machine which can improve the convenience of disassembling the clutch in the whole machine, reduce the difficulty of maintaining or replacing the clutch, and enable the quick maintenance in the field to be possible, thereby reducing the downtime and maintenance cost. The small-sized agricultural machine comprises a frame, an engine assembly, a clutch assembly and a gearbox assembly, wherein the engine assembly, the clutch assembly and the gearbox assembly are arranged on the frame; The engine assembly inputs power to a gearbox power input shaft of the gearbox assembly through the clutch assembly through an engine power output shaft; The engine assembly comprises an engine box body, the clutch assembly comprises a clutch box body, and the gearbox assembly comprises a gearbox box body; The clutch housing is positioned at a location derived from the transmission axis of the clutch assembly being offset from the axis of the engine power output shaft and the axis of the transmission power input shaft. Further, the clutch assembly also includes a clutch located in the clutch housing, the engine power output shaft transmitting power to the clutch through the first drive pair, the clutch transmitting power to the transmission power input shaft through the second drive pair such that a drive axis of the clutch assembly is offset from an axis of the engine power output shaft and an axis of the transmission power input shaft. Further, the transmission axis of the clutch assembly is offset from the axis of the power output shaft of the engine assembly and the axis of the power input shaft of the gearbox assembly in such a way that: The transmission axis of the clutch assembly is parallel to the axis of the power output shaft of the engine assembly and the axis of the power input shaft of the gearbox assembly, or the transmission axis of the clutch assembly is spatially perpendicular to the axis of the power output shaft of the engine assembly and the axis of the power input shaft of the gearbox assembly. Further, the clutch housing includes a base housing and a cover covering an opening provided in the base housing, the cover being exposed to an operative field of view for removal and installation, the opening being of a size sufficient for mounting and removal of the clutch. Further, the first end of the basic box body is integrally formed with the engine box body, and the second end of the basic box body is detachably connected with the gearbox box body; or the first end of the basic box body is detachably connected with the engine box body, and the second end of the basic box body is integrally formed with the gearbox box body; Or the first end of the basic box body is detachably connected with the engine box body, and the second end of the basic box body is detachably connected with the gearbox box body. Further, the transmission axis of the clutch assembly is parallel to the engine power output shaft axis and th