Transmission device for corn header

Abstract

The utility model discloses a transmission device for a corn header, and belongs to the technical field of agricultural machinery. Comprising a box body arranged on a corn header, a power input gear arranged at one end in the box body and connected with a power input shaft, and a bevel gear set arranged at the other end in the box body, the transition gear is arranged in the box body and connected with the bevel gear set through a bevel gear transmission shaft, the gear transmission set is located between the power input gear and the transition gear and meshed with the power input gear and the transition gear, and the bevel gear set is connected with a chopping knife assembly located outside the box body through a chopping knife transmission shaft; the gear box is simple in structure, the transmission path can be effectively optimized, the transmission efficiency can be improved, the working performance of the whole gear box can be enhanced, and the service life of the gear box can be effectively prolonged while the stability and the crushing effect of the chopping knife are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of agricultural machinery, and particularly relates to a transmission device for a corn header. BACKGROUND

[0002] The header of a corn harvester is one of the core operating components, and its stubble cleaning function needs to be achieved by pulverizing corn stalks through high-speed rotating shredding knives and returning them to the field, and the traditional driving mode of the shredding knives is to use a direct drive bevel gear, such as the gear box special for a corn header with a stubble cleaning function disclosed in Chinese utility model patent document CN215530062U, which comprises a shredding box body provided with a shredding box body gear shaft inside, the input end of the shredding box body gear shaft is in meshing transmission with the power input shaft of the shredding box body, the output end of the shredding box body gear shaft is connected with a power transmission shaft through a clutch device, the other end of the power transmission shaft is connected with a shredding knife gear transmission shaft in a meshing transmission mode, and the output end of the shredding knife gear transmission shaft is fixedly provided with a shredding knife through a shredding knife blade mounting seat. However, since the input end and the output end of the gear box rely on the meshing transmission of the bevel gear, and the path of the shredding box body gear shaft of the gear box is relatively long, the transmission efficiency is easily reduced, the working performance of the overall gear box is affected, and the power loss and vibration are easily intensified, the stability and pulverizing effect of the shredding knife are affected, and the service life of the gear box is reduced.

[0003] Therefore, there is a need for a transmission device for a corn header that can optimize the transmission path, improve the transmission efficiency, and enhance the working stability. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a transmission device for a corn header, which can effectively optimize the transmission path, improve the transmission efficiency, enhance the working performance of the overall gear box, ensure the stability and pulverizing effect of the shredding knife, and effectively prolong the service life of the gear box.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A transmission device for a corn header, comprising a box body arranged on the corn header, a power input gear connected with a power input shaft arranged at one end inside the box body, a bevel gear set arranged at the other end inside the box body, a transition gear arranged inside the box body and connected with the bevel gear set through a bevel gear transmission shaft, and a gear transmission set located between the power input gear and the transition gear and in meshing transmission with both, wherein the bevel gear set is connected with a shredding knife assembly located outside the box body through a shredding knife transmission shaft; the gear transmission set is provided with a clutch control assembly for controlling the rotation or stop of the gear transmission set.

[0007] The further improvement of the utility model technical scheme lies in: the gear transmission group comprises a plurality of intermediate gears between the power input gear and the transition gear and a clutch gear arranged between one pair of adjacent intermediate gears, wherein the power input gear, each intermediate gear, the clutch gear and the transition gear are engaged along the power transmission direction.

[0008] The further improvement of the utility model technical scheme lies in: the clutch control assembly is arranged on the clutch gear and controls the engagement or disengagement between the clutch gear and its adjacent two intermediate gears.

[0009] The further improvement of the utility model technical scheme lies in: the bevel gear set comprises a driven bevel gear sleeved on the chopping knife transmission shaft and a driving bevel gear above the driven bevel gear and engaged with the driven bevel gear, wherein the driving bevel gear is rotatably arranged on the inner wall of one side of the box body through a bevel gear transmission shaft, and the transition gear is fixedly sleeved on the bevel gear transmission shaft.

[0010] The further improvement of the utility model technical scheme lies in: the intermediate gear is connected with the front and rear inner walls of the box body through an intermediate gear shaft penetrating the center of the intermediate gear and is rotatably sleeved on the intermediate gear shaft or is rotatably connected with the front and rear inner walls of the box body through an intermediate gear shaft penetrating the center of the intermediate gear.

[0011] The further improvement of the utility model technical scheme lies in: the clutch gear is rotatably connected with the front and rear inner walls of the box body through a spline shaft penetrating the center of the clutch gear, and the clutch gear is sleeved on the spline shaft through a spline and can move forward and backward along the axial direction of the spline shaft under the control of the clutch control assembly.

[0012] The further improvement of the utility model technical scheme lies in: the clutch gear is rotatably connected with the front and rear inner walls of the box body through a spline shaft penetrating the center of the clutch gear, and the clutch gear is sleeved on the spline shaft through a spline and can move forward and backward along the axial direction of the spline shaft under the control of the clutch control assembly.

[0013] The further improvement of the utility model technical scheme lies in: the clutch gear is rotatably connected with the front and rear inner walls of the box body through a spline shaft penetrating the center of the clutch gear, and the clutch gear is sleeved on the spline shaft through a spline and can move forward and backward along the axial direction of the spline shaft under the control of the clutch control assembly.

[0014] The further improvement of the utility model technical scheme lies in: the clutch gear is rotatably connected with the front and rear inner walls of the box body through a spline shaft penetrating the center of the clutch gear, and the clutch gear is sleeved on the spline shaft through a spline and can move forward and backward along the axial direction of the spline shaft under the control of the clutch control assembly.

[0015] The further improvement of the utility model technical scheme lies in: the box body is connected with the corn header in a detachable manner through the mounting bracket; the power input gear, each intermediate gear, the clutch gear and the transition gear are all straight gears.

[0016] Thanks to the above technical scheme, the utility model has the following technical progress:

[0017] The utility model is used for corn header's transmission device, simple structure can effectively optimize transmission path, improve transmission efficiency, strengthen the whole gear box's work performance, guarantee the stability and the pulverization effect of chopping knife effectively prolong the service life of gear box.

[0018] The utility model discloses a transmission device and corn header's quick dismounting are realized through the integration of power input gear, bevel gear set, gear transmission group etc. parts in the box body, and combining detachable mounting support, it is convenient for maintenance and adapts the power interface demand of different model header.

[0019] The utility model discloses a transmission device and corn header's quick dismounting are realized through the integration of power input gear, bevel gear set, gear transmission group etc. parts in the box body, and combining detachable mounting support, it is convenient for maintenance and adapts the power interface demand of different model header.

[0020] The utility model discloses a transmission device and corn header's quick dismounting are realized through the integration of power input gear, bevel gear set, gear transmission group etc. parts in the box body, and combining detachable mounting support, it is convenient for maintenance and adapts the power interface demand of different model header.

[0021] The utility model discloses a transmission device and corn header's quick dismounting are realized through the integration of power input gear, bevel gear set, gear transmission group etc. parts in the box body, and combining detachable mounting support, it is convenient for maintenance and adapts the power interface demand of different model header.

[0022] The utility model discloses a transmission device and corn header's quick dismounting are realized through the integration of power input gear, bevel gear set, gear transmission group etc. parts in the box body, and combining detachable mounting support, it is convenient for maintenance and adapts the power interface demand of different model header. DRAWINGS

[0023] Figure 1 It is the external structure schematic drawing of transmission device of the utility model,

[0024] Figure 2 It is the internal structure schematic drawing of transmission device of the utility model,

[0025] Figure 3 It is the overhead structure schematic drawing of gear transmission group in transmission device of the utility model under the running state,

[0026] Figure 4 It is the overhead structure schematic drawing of gear transmission group in transmission device of the utility model under the stop state,

[0027] Figure 5It is the structural schematic view of the shift fork in the transmission device.

[0028] Among them, 1, the box, 2, power input gear, 3, gear, 4, chopping knife assembly, 5, clutch gear, 6, bevel gear transmission shaft, 7, transition gear, 8, passive bevel gear, 9, driving bevel gear, 10, spline shaft, 11, annular clamping groove, 12, shift fork, 12-1, connecting ring, 12-2, "U" shaped fork arm, 13, guide pin, 14, power input shaft. Specific implementation

[0029] The utility model makes further detailed explanation in combination with example:

[0030] As Figure 1 And Figure 2 The utility model provides a transmission device for corn header, including box 1 and setting in the power input gear 2, bevel gear group, transition gear 7 and gear drive group in box 1, specifically, box 1 sets up on corn header, and box 1 can be connected with corn header by installing support in detachable mode, and box 1 is strip shape, and the inner chamber shape of box 1 is adapted power input gear 2, bevel gear group, transition gear 7 and gear drive group, and the inner chamber shape of box 1 can be adjusted according to its inside actual installation demand, can realize the reasonable shape of power input gear 2, bevel gear group, transition gear 7 and gear drive group installation, and all belong to the protection scope of this scheme. Power input gear 2 is set up in one end inside box 1 as power input end, and power input gear 2 is connected with power input shaft 14, and power input shaft 14 is usually connected with power input source, such as motor etc. Bevel gear group is set up in the other end inside box 1 as power output end. Transition gear 7 is also set up in box 1, and transition gear 7 is connected with bevel gear group through bevel gear transmission shaft 6. Gear drive group is located between power input gear 2 and transition gear 7, and gear drive group is engaged with power input gear 2 and transition gear 7 respectively. Among them, bevel gear group is connected with chopping knife assembly 4 located outside box 1 through chopping knife transmission shaft, and power input gear 2, gear drive group and transition gear 7 can transmit the power of power input source to bevel gear group, and bevel gear group drives chopping knife assembly 4 to rotate and carries out cutting work through chopping knife transmission shaft, in addition, clutch control assembly is set up on gear drive group, and the rotation or stop of clutch control assembly can be controlled, and chopping knife assembly 4 can be started and stopped quickly without cutting off power input source, and the response speed is improved, and additional loss is avoided.

[0031] Specifically, the gear transmission group comprises a plurality of intermediate gears 3 and a clutch gear 5, wherein the plurality of intermediate gears 3 are located between the power input gear 2 and the transition gear 7, and the clutch gear 5 is arranged between a pair of adjacent intermediate gears 3, wherein the power input gear 2, each intermediate gear 3, the clutch gear 5 and the transition gear 7 are engaged in the power transmission direction, and the power transmission direction is from the power input gear 2 to the transition gear 7. Preferably, five intermediate gears 3 are arranged, and the clutch gear 5 is arranged between a pair of adjacent intermediate gears 3 close to the transition gear 7, at this time, the power input gear 2, four intermediate gears 3, the clutch gear 5, an intermediate gear 3 and the transition gear 7 are sequentially engaged in the power transmission direction.

[0032] Preferably, the power input gear 2, each intermediate gear 3, the clutch gear 5 and the transition gear 7 are all straight gears, which are simple in structure and effectively improve the transmission efficiency.

[0033] Further, the bevel gear set comprises a driven bevel gear 8 and a driving bevel gear 9, the driven bevel gear 8 is sleeved on the chopping knife transmission shaft and connected with the chopping knife assembly 4 located below the outside of the box body 1 through the chopping knife transmission shaft, and the driving bevel gear 9 is located above the driven bevel gear 8 and engaged with the driven bevel gear 8, wherein the driving bevel gear 9 is rotatably arranged on the rear inner wall of the box body 1 through the bevel gear transmission shaft 6, and the transition gear 7 is fixedly sleeved on the bevel gear transmission shaft 6, that is, the transition gear 7 is located at the rear side of the driving bevel gear 9, wherein the fixed sleeving means that the transition gear 7 and the bevel gear transmission shaft 6 are connected by a key or other means that can fix the transition gear 7 on the bevel gear transmission shaft 6, so that the transition gear 7 can drive the bevel gear transmission shaft 6 to rotate, thereby driving the driving bevel gear 9 connected with the bevel gear transmission shaft 6 to rotate. The power transmission logic is that the power is transmitted to the chopping knife assembly 4 through the power input gear 2, the intermediate gear 3, the clutch gear 5, the intermediate gear 3, the transition gear 7, the driving bevel gear 9 and the driven bevel gear 8 in turn.

[0034] Specifically, the intermediate gear 3 is connected with the front and rear inner walls of the box body 1 through the intermediate gear shaft penetrating the center thereof and the intermediate gear 3 is rotatably sleeved on the intermediate gear shaft, that is, the intermediate gear 3 can rotate around the intermediate gear shaft, or the intermediate gear 3 is rotatably connected with the front and rear inner walls of the box body 1 through the intermediate gear shaft penetrating the center thereof, that is, the intermediate gear shaft can rotate on the front and rear inner walls of the box body 1 to drive the intermediate gear 3 to rotate.

[0035] In order to achieve the purpose of controlling the operation or stop of the gear transmission group and thereby realizing the rapid start and stop of the chopping knife assembly 4, the clutch control assembly is arranged on the clutch gear 5, and the clutch control assembly can control the engagement or disengagement between the clutch gear 5 and the two intermediate gears 3 adjacent thereto, that is, the clutch gear 5 is engaged with the two intermediate gears 3 on its two sides, the power is continuously transmitted, the chopping knife assembly 4 normally operates, the clutch gear 5 moves away from the two intermediate gears 3 on its two sides, the power chain is interrupted, and the chopping knife assembly 4 stops rotating.

[0036] As shown in Figures 2-4 The clutch gear 5 is rotatably connected to the inner walls of the front and rear sides of the box 1 through the spline shaft 10 penetrating the center thereof, and the clutch gear 5 is sleeved on the spline shaft 10, that is, the spline shaft 10 can rotate on the inner walls of the front and rear sides of the box 1 to drive the clutch gear 5 to rotate, and the clutch gear 5 can move forward and backward along the axial direction of the spline shaft 10 under the control of the clutch control assembly, so as to realize the meshing or disengaging between the clutch gear 5 and the two adjacent intermediate gears 3.

[0037] Specifically, at least one side of the clutch gear 5 is provided with an annular clamping groove 11 which is integrally formed with the clutch gear 5 and is sleeved on the spline shaft 10, that is, the annular clamping groove 11 can be arranged on the front side, the rear side or the front and rear sides of the clutch gear 5. The clutch control assembly includes a shift fork 12 and a guide pin 13. When the annular clamping groove 11 is arranged on the front side or the rear side of the clutch gear 5, the clutch control assembly is provided with one shift fork 12. When the annular clamping groove 11 is arranged on the front and rear sides of the clutch gear 5, the clutch control assembly can be provided with one shift fork 12 or two shift forks 12 accordingly. The shift fork 12 is detachably installed in the annular clamping groove 11 of the clutch gear 5 from the oblique upper side or the oblique lower side, so as to avoid interfering with the rotation of the adjacent intermediate gear 3 while being able to drive the clutch gear 5 to move forward and backward along the axial direction of the spline shaft 10. The guide pin 13 is connected with the shift fork 12 and penetrates at least one side wall of the box 1, that is, the front side, the rear side or the front and rear sides, so as to be inserted and pulled out by the operating personnel to control the meshing or disengaging between the clutch gear 5 and the two adjacent intermediate gears 3.

[0038] As shown in Figure 5 The shift fork 12 includes a connecting ring 12-1 which is sleeved on the guide pin 13 and connected therewith, and a "U"-shaped fork arm 12-2 which is connected at one end with the connecting ring 12-1 and open at the other end. The "U"-shaped fork arm 12-2 of the shift fork 12 is gap-fitted between the annular clamping groove 11 of the clutch gear 5, which not only ensures the smooth movement of the clutch gear 5 on the spline shaft 10, but also does not cause the shift fork 12 to affect the rotation of the clutch gear 5.

[0039] As shown in Figure 3 When it is needed to quickly start the chopping knife assembly 4, the guide pin 13 can be pushed to drive the clutch gear 5 to move backward along the axial direction of the spline shaft 10 through the shift fork 12, so that the clutch gear 5 is meshed with the two intermediate gears 3 on its two sides, ensuring continuous power transmission and normal operation of the chopping knife assembly 4. Figure 4 As shown in

[0040] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A drive for a corn header, characterized by: The box (1) is arranged on a corn header, a power input gear (2) is arranged at one end inside the box (1) and connected with a power input shaft (14), a bevel gear set is arranged at the other end inside the box (1), a transition gear (7) is arranged inside the box (1) and connected with the bevel gear set through a bevel gear transmission shaft (6), and a gear transmission set is arranged between the power input gear (2) and the transition gear (7) and engaged with the two gears.

2. A drive for a corn head as set forth in claim 1, wherein: The gear transmission set comprises a plurality of intermediate gears (3) arranged between the power input gear (2) and the transition gear (7) and a clutch gear (5) arranged between a pair of adjacent intermediate gears (3).

3. A drive for a corn head as set forth in claim 2, wherein: The clutch control assembly is arranged on the clutch gear (5) and controls the engagement or disengagement between the clutch gear (5) and the two adjacent intermediate gears (3).

4. A drive unit for a corn head as set forth in claim 3, wherein: The bevel gear set comprises a driven bevel gear (8) arranged on the chopping knife transmission shaft and a driving bevel gear (9) arranged above the driven bevel gear (8) and engaged with the driven bevel gear (8), wherein the driving bevel gear (9) is rotatably arranged on the side wall of the box (1) through the bevel gear transmission shaft (6), and the transition gear (7) is fixedly arranged on the bevel gear transmission shaft (6).

5. A drive for a corn head as set forth in claim 3, wherein: The intermediate gear (3) is connected with the front and rear inner walls of the box (1) through an intermediate gear shaft penetrating the center of the intermediate gear (3), and the intermediate gear (3) is rotatably arranged on the intermediate gear shaft or the intermediate gear (3) is rotatably connected with the front and rear inner walls of the box (1) through the intermediate gear shaft penetrating the center of the intermediate gear (3).

6. A drive for a corn head as set forth in claim 3, wherein: The clutch gear (5) is rotatably connected with the front and rear inner walls of the box (1) through a spline shaft (10) penetrating the center of the clutch gear (5), and the clutch gear (5) is rotatably arranged on the spline shaft (10) and can move forward and backward along the axial direction of the spline shaft (10) under the control of the clutch control assembly.

7. A drive unit for a corn head as set forth in claim 6, wherein: At least one side of the clutch gear (5) is provided with an annular clamping groove (11) integrally formed on the clutch gear (5) and arranged on the spline shaft (10); the clutch control assembly comprises a shift fork (12) which is detachably arranged in the annular clamping groove (11) of the clutch gear (5) from the oblique upper side or the oblique lower side of the clutch gear (5), and a guide pin (13) penetrating at least one side wall of the box (1) and connected with the shift fork (12).

8. A drive for a corn head according to claim 7 wherein: The shift fork (12) comprises a connecting ring (12-1) arranged on the guide pin (13) and connected with the guide pin (13), and a "U"-shaped fork arm (12-2) having one end connected with the connecting ring (12-1) and the other end open.

9. A drive for a corn head as set forth in claim 8, wherein: The "U"-shaped fork arm (12-2) of the shift fork (12) is clearance-fitted with the annular clamping groove (11) of the clutch gear (5).

10. A drive unit for a corn head according to any one of claims 2-9, characterized in that: The box (1) is detachably connected with the corn header through a mounting bracket; the power input gear (2), each intermediate gear (3), the clutch gear (5) and the transition gear (7) are all spur gears.

Images