Search

CN-224229201-U - Self-propelled corn harvester speed reduction reversing box

CN224229201UCN 224229201 UCN224229201 UCN 224229201UCN-224229201-U

Abstract

The utility model discloses a self-propelled corn harvester speed reduction reversing box, in particular to the field of agricultural machinery, which comprises a box shell main body, wherein an input shaft, a middle shaft and a driving bevel gear shaft are sequentially and transversely arranged in the box shell main body from top to bottom, the two ends of the input shaft are protruded outside the box shell main body, and the two ends of the input shaft are respectively provided with a power input end and a mechanical connection end. The utility model uses the power input end corresponding to the input shaft to connect the engine to input power through the belt or other modes, uses the driven bevel gear shaft as the output power to connect the header, has the characteristics of compact mechanism, high transmission efficiency and strong reliability compared with the power transmission mode that the traditional engine transmits the power to the header through the belt or the chain, and uses the rotation direction of the header gear to remove the blockage, so that the speed reduction reversing box has a larger speed change range, adapts to the harvesting requirements of more crops and regions, and can effectively reduce the equipment failure rate caused by the factors such as weed blockage.

Inventors

  • WANG YOUQIN
  • LIU QUANFA
  • TAO HONG
  • Gao Qizhou

Assignees

  • 山东江华机械制造有限公司

Dates

Publication Date
20260512
Application Date
20250711

Claims (8)

  1. 1. The speed reduction reversing box of the self-propelled corn harvester comprises a box shell main body (1) and is characterized in that an input shaft (2), an intermediate shaft (17) and a driving bevel gear shaft (18) are sequentially and transversely arranged in the box shell main body (1) from top to bottom, two ends of the input shaft (2) are protruded outside the box shell main body (1), two ends of the input shaft (2) are respectively provided with a power input end (19) and a mechanical connecting end (20), and the input shaft (2) is externally connected with an engine of the self-propelled corn harvester through the mechanical connecting end (20); The bottom end of the box shell main body (1) is also provided with a driven bevel gear shaft (16), and a multi-gear meshing transmission assembly is arranged among the input shaft (2), the intermediate shaft (17), the driving bevel gear shaft (18) and the driven bevel gear shaft (16).
  2. 2. The self-propelled corn harvester speed reduction reversing box according to claim 1, wherein the input shaft (2) is designed as a transmission shaft, a plurality of gear adjusting gears are arranged on the input shaft (2), and the gear adjusting gears are sleeved outside the input shaft (2) and are arranged in the inner cavity of the box shell main body (1); The gear adjusting gears sequentially comprise a reversing driving gear (3), a three-gear driving gear (6), a two-gear driving gear (7) and a first-gear driving gear (8), a meshing tooth holder (5) is arranged between the reversing driving gear (3) and the three-gear driving gear (6), the meshing tooth holder (5) is sleeved on the outer side of the input shaft (2), and a spraying tooth sleeve (4) is sleeved on the outer side of the meshing tooth holder (5).
  3. 3. The speed reduction reversing box of the self-propelled corn harvester according to claim 2, wherein the intermediate shaft (17) is used as a main speed reduction shaft, a plurality of auxiliary adjusting gears are sleeved on the intermediate shaft (17), and the auxiliary adjusting gears are sleeved on the outer side of the intermediate shaft (17) and are arranged in an inner cavity of the box shell main body (1); The auxiliary adjusting gears comprise a three-gear driven gear (11), a two-gear driven gear (10) and an intermediate gear (9) from left to right.
  4. 4. The speed reduction reversing box of the self-propelled corn harvester according to claim 3, wherein the input shaft (2), the intermediate shaft (17), the driving bevel gear shaft (18) and the driven bevel gear shaft (16) are all made of high-strength alloy steel; The three-gear driven gear (11) is in meshed transmission with the three-gear driving gear (6), the two-gear driving gear (7) is in meshed transmission with the two-gear driven gear (10), and the intermediate gear (9) is in meshed transmission with the first-gear driving gear (8).
  5. 5. The self-propelled corn harvester speed reduction reversing box according to claim 3, wherein a plurality of reinforcing ribs are designed on the inner surface of the box shell main body (1), and bearings for supporting and positioning are further arranged at the joints of the box shell main body (1) and the input shaft (2), the intermediate shaft (17), the driving bevel gear shaft (18) and the driven bevel gear shaft (16); The driving bevel gear shaft (18) is sequentially sleeved with a reversing driven gear (12), a driving bevel gear (14) and a first-gear driven gear (13) from left to right, wherein the first-gear driven gear (13) is meshed with the intermediate gear (9) for transmission.
  6. 6. The speed reduction reversing box of the self-propelled corn harvester according to claim 5, wherein the driven bevel gear shaft (16) penetrates through the box shell main body (1), one end of the driven bevel gear shaft (16) extending into the inner cavity of the box shell main body (1) is connected with a driven bevel gear (15), and the driven bevel gear (15) is meshed with the driving bevel gear (14) for transmission.
  7. 7. The speed reducing and reversing box of self-propelled corn harvester according to claim 6, wherein the driven bevel gear shaft (16) is arranged as an output shaft, and a transmission mechanism connected with a peeler, an elevator and a front end header assembly is arranged at one end of the outer convex box shell main body (1) of the driven bevel gear shaft (16).
  8. 8. The speed reducing and reversing box of self-propelled corn harvester of claim 3, wherein the plurality of auxiliary adjusting gears and the plurality of gear adjusting gears cooperate together to enable the speed reducing box to have three forward gears and one reverse gear.

Description

Self-propelled corn harvester speed reduction reversing box Technical Field The utility model relates to the technical field of agricultural machinery, in particular to a speed reduction reversing box of a self-propelled corn harvester. Background Corn is widely applied to crops worldwide, and the improvement of the production efficiency and the harvesting method of the corn is of great significance for improving the agricultural productivity. The self-propelled corn harvester is used as a powerful tool for modern agriculture, not only saves manpower by mechanical harvesting, but also improves harvesting efficiency and reduces crop loss, thereby increasing economic income of farmers and promoting industrialization and large-scale development. However, existing corn harvesters often face the need for variable speed and reversing operations under different harvesting environments and operating conditions. The traditional speed reduction reversing box adopts a rectangular spline sleeve to conduct meshing so as to finish speed change and reversing, but the structure is easy to solve the problems of unstable transmission, high failure rate and insufficient torque conversion performance caused by intensive farm operation environment, weed blockage and the like. Therefore, optimizing the design of the harvester drive train is particularly important for improving harvesting efficiency, reducing failure rates, and achieving stable and smooth operation, especially under varying terrain and corn crop conditions. The invention patent with publication number CN106171300A in the prior art discloses a self-propelled corn harvester speed reduction reversing box, which can reduce the speed and increase the torque and reverse the power transmitted by the harvester engine, and reasonably distributes and transmits the power to each operation part and cab in front and back of the machine, but has certain defects, wherein: On one hand, a self-propelled corn harvester speed reduction reversing box with a plurality of speed gears needs to be designed so as to better adapt to the operation requirements of various areas and under different conditions, and on the other hand, in order to solve the problem of difficult reverse gear caused by weed blockage, a speed reduction reversing box design which is stable in structure and can effectively reverse gear is also needed. In addition, through improving the gear structure, use two sets of meshing tooth covers to replace rectangular spline housing, not only be favorable to driven stability, hopefully reduce manufacturing and cost of maintenance. However, the related technology still faces a small difficulty in practical application, so that it is necessary to develop a novel speed reduction reversing box of the self-propelled corn harvester to solve the defects of the prior art and meet the demands of markets and farmers. Disclosure of utility model In order to overcome the defects of the prior art, the embodiment of the utility model provides a speed reduction reversing box of a self-propelled corn harvester, which aims to solve the technical problems that in the traditional self-propelled corn harvester, the speed change range is limited, the reversing is not flexible enough, and the structural design of a transmission system has certain defects, so that the failure rate is higher in the running process of equipment, and the harvesting efficiency and the harvesting quality are influenced. The self-propelled corn harvester speed reduction reversing box comprises a box shell main body, wherein an input shaft, an intermediate shaft and a driving bevel gear shaft are sequentially and transversely arranged in the box shell main body from top to bottom, two ends of the input shaft are protruded outside the box shell main body, two ends of the input shaft are respectively provided with a power input end and a mechanical connecting end, and the input shaft is externally connected with an engine of the self-propelled corn harvester through the mechanical connecting end; The box shell is characterized in that a driven bevel gear shaft is further arranged at the bottom end of the box shell body, the driven bevel gear shaft is arranged as an output shaft, and a multi-gear meshing transmission assembly is arranged among the input shaft, the intermediate shaft, the driving bevel gear shaft and the driven bevel gear shaft. In a preferred embodiment, the input shaft is designed as a transmission shaft, a plurality of gear adjusting gears are arranged on the input shaft, and the gear adjusting gears are sleeved outside the input shaft and are arranged in the inner cavity of the box shell main body; The gear adjusting gears sequentially comprise a reversing driving gear, a three-gear driving gear, a two-gear driving gear and a first-gear driving gear from left to right, a meshing tooth seat is arranged between the reversing driving gear and the three-gear driving gear, the meshing tooth seat is sleeved o