A side transmission device for a corn header

Abstract

The utility model provides a kind of side transmission device for corn header, the side transmission device for corn header includes transmission case, main shaft box, main gear, auxiliary gear and adjusting gasket.The utility model is connected by detachable connection to form gearbox between transmission case and main shaft box, auxiliary gear is rotatably arranged inside transmission case, main gear is rotatably arranged inside main shaft box, when main shaft box is installed to transmission case, main gear and auxiliary gear are mutually meshed arrangement.And main gear is detachably installed inside main shaft box, adjusting gasket is installed between main shaft box and transmission case.Thus the size of the gear inside main shaft box can be replaced according to field operation condition, and adjusting gasket of corresponding thickness is replaced, so that main gear and auxiliary gear are meshed.The transmission ratio between main body and ear picking single row is switched.Meanwhile, main gear and auxiliary gear are located inside gearbox, which plays an effective protection role and reduces maintenance cost in later period.

Description

Technical Field

[0001] This utility model belongs to the technical field of corn harvesters, specifically relating to a side transmission device for a corn header. Background Technology

[0002] The header of a corn harvester is typically powered by the harvester body, which transmits power to the ear-picking row on the header via a rotating assembly. During the ear-picking row's operation, the corn stalks are processed and the corn cobs are separated. Currently, the main transmission method for corn harvesters is a chain and sprocket drive. However, the required harvesting speed varies significantly depending on the maturity of the corn. A chain and sprocket drive makes it difficult to switch transmission ratios. Furthermore, the sprockets and chains are always on the outside, making them susceptible to environmental influences, leading to higher maintenance rates, increased repair costs, and delays in harvesting. Utility Model Content

[0003] This utility model provides a side transmission device for a corn header, which aims to solve the problems of inconvenient switching of transmission ratios and high maintenance costs of the transmission components on the corn header in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a side transmission device for a corn header, comprising: A gearbox, the gearbox including a transmission housing and a spindle housing detachably mounted at the end of the transmission housing; The main gear is rotatably disposed inside the spindle box, and the main gear is detachably installed inside the spindle box; The auxiliary gear is rotatably disposed inside the transmission box and located at the end of the transmission box. When the main shaft box is installed on the transmission box, the main gear and the auxiliary gear are in a meshing state. An adjusting shim is placed between the spindle box and the transmission box to adjust the gap between them.

[0005] In one possible implementation, along the length of the transmission box, a plurality of transmission gears are rotatably arranged inside the transmission box, and the plurality of transmission gears are sequentially meshed with each other, and the transmission gear adjacent to the auxiliary gear is meshed with the auxiliary gear.

[0006] In one possible implementation, when the spindle box is fixed to the transmission box, the spindle box and the transmission box form a sealed housing.

[0007] In one possible implementation, the gearbox is tilted vertically as a whole, and the main shaft box is located at the higher end of the transmission box. Threaded plugs are installed on both the upper and lower sides of the bottom of the transmission box.

[0008] In one possible implementation, the top of the spindle box is also provided with a breather valve for maintaining pressure balance inside and outside the gearbox.

[0009] In one possible implementation, there are multiple adjusting shims, and the multiple adjusting shims are sealed together.

[0010] In one possible implementation, a main drive shaft is rotatably mounted inside the spindle box, the main gear is detachably mounted on the main drive shaft, and bearings for mounting the drive shaft are installed on the inner walls of opposite sides of the spindle box, with oil seals installed on the outer side of the bearings.

[0011] In one possible implementation, the side wall of the spindle box is provided with a mounting hole for mounting the bearing, and a retaining ring for limiting the position of the bearing is installed on the inner wall of the mounting hole.

[0012] In one possible implementation, a transition gearbox is also provided on one side of the gearbox. A plurality of intermediate gears are rotatably arranged inside the transition gearbox and mesh with each other in sequence. The intermediate gears are connected to the auxiliary gear in a transmission manner. The transition gearbox is a sealed housing and a cover plate is detachably installed on the top of the transition gearbox.

[0013] The solution shown in this application, compared with the prior art, incorporates a gearbox mounted on the corn harvester. The gearbox includes a transmission box and a main shaft box. The transmission box and main shaft box are detachably connected to form the gearbox. A secondary gear is rotatably mounted inside the transmission box, and a primary gear is rotatably mounted inside the main shaft box. When the main shaft box is mounted on the transmission box, the primary and secondary gears mesh with each other. The primary gear is detachably mounted inside the main shaft box, and adjusting shims are installed between the main shaft box and the transmission box. This allows for the replacement of the gear size inside the main shaft box and the adjustment shims of corresponding thickness according to the on-site operating conditions, enabling the primary and secondary gears to mesh. The primary gear connects to the power source on the harvester body, while the secondary gear provides power to the single-row harvesting on the harvester. This achieves the switching of the transmission ratio between the main body and the single-row harvesting. Furthermore, the fact that both the primary and secondary gears are located inside the gearbox provides effective protection and reduces later maintenance costs. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the side transmission device for a corn header provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the internal structure of the spindle box provided in an embodiment of the present utility model; Figure 3This is a schematic diagram of the transition gearbox provided in an embodiment of the present utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Gearbox; 11. Transmission box; 12. Main spindle box; 121. Breather valve; 2. Main gear; 21. Main drive shaft; 22. Bearing; 23. Oil seal; 24. Snap ring; 3. Secondary gear; 4. Adjusting shim; 5. Transmission gear; 6. Threaded plug; 7. Transition gearbox; 71. Intermediate gear; 72. Cover plate. Detailed Implementation

[0016] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Please refer to the following: Figures 1 to 3 The side transmission device for a corn header provided by this utility model will now be described. The side transmission device for a corn header includes a gearbox 1, a main gear 2, a secondary gear 3, and an adjusting shim 4. The gearbox 1 includes a transmission housing 11 and a main shaft housing 12 detachably mounted at the end of the transmission housing 11; the main gear 2 is rotatably disposed inside the main shaft housing 12, and the secondary gear 3 is rotatably disposed inside the transmission housing 11 and located at the end of the transmission housing 11. When the main shaft housing 12 is mounted on the transmission housing 11, the main gear 2 and the secondary gear 3 remain meshed; the adjusting shim 4 is disposed between the main shaft housing 12 and the transmission housing 11, and is used to adjust the gap between the main shaft housing 12 and the transmission housing 11.

[0018] The side transmission device for a corn header provided in this embodiment, compared with the prior art, incorporates a gearbox 1. The gearbox 1 is mounted on the corn header and includes a transmission housing 11 and a main shaft housing 12. The transmission housing 11 and the main shaft housing 12 are detachably connected to form the gearbox 1. A secondary gear 3 is rotatably mounted inside the transmission housing 11, and a primary gear 2 is rotatably mounted inside the main shaft housing 12. When the main shaft housing 12 is mounted on the transmission housing 11, the primary gear 2 and the secondary gear 3 mesh with each other. The primary gear 2 is detachably mounted inside the main shaft housing 12, and an adjusting shim 4 is installed between the main shaft housing 12 and the transmission housing 11. This allows for the replacement of the gear size inside the main shaft housing 12 and the adjustment shim 4 of corresponding thickness according to the on-site operating conditions, enabling the primary gear 2 and the secondary gear 3 to mesh. The primary gear 2 is connected to the power source on the harvester body, while the secondary gear 3 provides power to the single-row harvesting section on the header. This achieves the switching of the transmission ratio between the main body and the single-row harvesting section. Meanwhile, both the main gear 2 and the secondary gear 3 are located inside the gearbox 1, which provides effective protection and reduces the maintenance costs in the later stages.

[0019] Specifically, in this embodiment, the main gear 2 inside the spindle box 12 is connected to the output shaft of the power source on the harvester via a universal joint. This ensures that the spindle box 12 maintains its transmission connection with the output shaft on the harvester even after the spindle box 12 changes position.

[0020] In some embodiments, the transmission box 11 may be adopted as follows: Figure 1 The structure shown. See also Figure 1 Along the length of the transmission box 11, multiple transmission gears 5 are rotatably arranged inside the transmission box 11. These transmission gears 5 are sequentially meshed with each other, and the transmission gear 5 adjacent to the auxiliary gear 3 meshes with the auxiliary gear 3. Along the length of the transmission box 11, multiple transmission gears 5 are sequentially arranged inside the transmission box 11, and the transmission gears 5 are rotatably arranged inside the transmission box 11 via bearings 22. Adjacent transmission gears 5 mesh with each other, and one of the transmission gears 5 is connected to the auxiliary gear 3. There is a certain distance between the output shaft of the cutter and the single row of ears being picked on the harvesting table, thus enabling transmission connection within a certain length range through the multiple transmission gears 5.

[0021] In some embodiments, the spindle box 12 described above can be as follows: Figure 1 The structure shown. See also Figure 1 When the spindle box 12 is fixed to the transmission box 11, the spindle box 12 and the transmission box 11 form a sealed housing. Flanges are fixedly installed on the outer circumference of both the spindle box 12 and the transmission box 11. The two flanges can be fixedly connected together by bolts. Adjusting shims 4 are located between the flanges of the spindle box 12 and the transmission box 11, forming a sealing structure with the two flanges. After the spindle box 12 is installed on the transmission box 11, the gearbox 1 becomes a sealed structure, allowing lubricating oil to be added inside. This lubricating oil serves two purposes: lubricating the main gear 2, the auxiliary gear 3, and the transmission gear 5, and absorbing the heat generated during operation, which is then dissipated through the gearbox 1 housing, improving the overall cooling effect of the transmission structure.

[0022] In some embodiments, the gearbox 1 described above may employ, as follows: Figure 1 The structure shown. See also Figure 1The gearbox 1 is inclined vertically, with the main spindle box 12 located at the higher end of the transmission box 11. Threaded plugs 6 are installed on both the upper and lower sides of the bottom of the transmission box 11. The entire gearbox 1 is inclined vertically on the cutting table, with the main spindle box 12 at the highest point. Mounting holes for the threaded plugs 6 are provided on both the upper and lower sides of the bottom of the transmission box 11, allowing communication between the inside of the gearbox 1 and the outside. Removing the threaded plugs 6 allows for oil drainage. Specifically, in this embodiment, the same threaded plugs 6 are provided on the side wall of the main spindle box 12. Removing the threaded plugs 6 from the main spindle box 12 allows for the addition of lubricating oil into the gearbox 1.

[0023] Specifically, in this embodiment, if it is necessary to replace the main gear 2, the spindle box 12 needs to be removed from the transmission box 11. At this time, the oil needs to be drained by removing the threaded plug 6 on the transmission box 11 first, and then the spindle box 12 is removed from the transmission box 11 to replace the main gear 2 or the spindle box 12 with the corresponding main gear 2 is directly replaced.

[0024] In some embodiments, the spindle box 12 described above can be as follows: Figure 1 The structure shown. See also Figure 1 The top of the spindle box 12 is also equipped with a breather valve 121 to maintain the pressure balance inside and outside the gearbox 1. The breather valve 121 facilitates subsequent oil filling or draining operations, preventing the addition or drainage of lubricating oil from being affected by excessive or insufficient internal pressure in the gearbox 1.

[0025] In some embodiments, the adjusting shim 4 described above can be as follows: Figure 1 The structure shown. See also Figure 1 There are multiple adjusting shims 4, and these shims 4 are sealed together. The adjusting shims 4 have varying thicknesses, allowing for the selection of shims of appropriate thickness to adjust the distance between the transmission housing 11 and the spindle housing 12 according to design requirements. Furthermore, sealing gaskets are provided between adjacent adjusting shims 4, or between the spindle housing 12, transmission housing 11, and adjusting shims 4, thereby improving the sealing effect after the spindle housing 12 is installed on the transmission housing 11.

[0026] In some embodiments, the spindle box 12 described above can be as follows: Figure 2 The structure shown. See also Figure 2The main drive shaft 21 is rotatably mounted inside the main spindle box 12. The main gear 2 is detachably mounted on the main drive shaft 21. Bearings 22 for mounting the drive shaft are installed on the inner walls of opposite sides of the main spindle box 12, and oil seals 23 are installed on the outer side of the bearings 22. The main drive shaft 21 is rotatably mounted on the main spindle box 12 via the bearings 22. One end of the main drive shaft 21 extends to the outer side of the main spindle box 12 and is connected to the main shaft of the corn harvester via a universal joint. Mounting holes for mounting the bearings 22 are provided on both opposite side walls of the main spindle box 12. The mounting holes penetrate both side walls of the main spindle box 12. The bearings 22 are installed inside the mounting holes, and oil seals 23 are installed on the outer side of the bearings 22 to achieve a sealing effect inside the main spindle box 12.

[0027] Specifically, in this embodiment, a mounting part for mounting the main gear 2 is provided in the middle of the main drive shaft 21. The main gear 2 is mounted from one end of the main drive shaft 21 to the mounting part, and an anti-rotation key is also provided between the main gear 2 and the main drive shaft 21 to prevent the main gear 2 from rotating relative to the main drive shaft 21.

[0028] Optionally, in this embodiment, a mounting hole for mounting the bearing 22 is provided on the side wall of the transmission box 11. The auxiliary gear 3 is rotatably mounted on the transmission box 11 via the bearing 22, and an oil seal 23 is also installed on the outer side of the bearing 22 on the outer side wall of the transmission box 11, thereby achieving sealing inside the transmission box 11. The transmission gear 5 and the auxiliary gear 3 have the same mounting structure on the transmission box 11.

[0029] In some embodiments, the spindle box 12 described above can be as follows: Figure 2 The structure shown. See also Figure 2 The spindle housing 12 has mounting holes on its side walls for mounting bearings 22. A retaining ring 24 is installed on the inner wall of each mounting hole to limit the position of the bearing 22. Mounting holes for bearings 22 are also provided on opposite side walls of the spindle housing 12. The bearing 22 can be installed into the mounting holes from the outside of the spindle housing 12, facilitating installation. A retaining ring 24 is provided on the outside of the bearing 22 to prevent it from moving outwards.

[0030] Specifically, in this embodiment, the bearing 22 is internally connected to the spindle housing 12, allowing the lubricating oil inside the spindle housing 12 to lubricate both the gears and the bearing 22. Limiting platforms are provided at both ends of the drive shaft to restrict the bearing 22 from moving closer to the main gear 2. The main gear 2 has mounting holes for the drive shaft and a limiting platform on one side to restrict movement. This facilitates the installation of the drive shaft, the main gear 2, and the bearing 22.

[0031] Specifically, in this embodiment, the bearing 22 on the transmission box 11 has the same mounting structure as the bearing 22 on the spindle box 12.

[0032] In one possible implementation, the aforementioned transition gearbox 7 can be adopted as follows: Figure 3 The structure is shown. A transition gearbox 7 is also provided on one side of the gearbox 1. Multiple intermediate gears 71 are rotatably mounted inside the transition gearbox 7, meshing sequentially. The intermediate gears 71 are connected to the secondary gear 3. The transition gearbox 7 is a sealed housing, and a cover plate 72 is detachably installed on its top. The transition gearbox 7 is fixedly mounted on the outside of the corn harvester. An input shaft is provided between one end of the intermediate gear 71 inside the transition gearbox 7 and the lowest transmission gear 5 inside the gearbox 1. The transmission connection between the transmission gear 5 and the intermediate gear 71 is achieved through the input shaft. The transmission connection between the intermediate gear 5 and the single-row harvesting drive end is achieved through the intermediate gear 71 at the other end of the transition gearbox 7. The design of the transition gearbox 7 ensures that the entire transmission system uses gear transmission, improving stability during transmission. Furthermore, the intermediate gears 71 are all spur gears, increasing service life and facilitating future disassembly and maintenance.

[0033] Specifically, in this embodiment, a cover plate 72 is detachably installed on the top of the transition gearbox 7, and the cover plate 72 is fixedly installed on the transition gearbox 7 by bolts. A sealing gasket is provided between the cover plate 72 and the transition gearbox 7 to achieve a seal between them. Furthermore, the cover plate 72 facilitates later observation and maintenance of the internal structure of the transition gearbox 7.

[0034] Specifically, in this embodiment, the mounting structure of the intermediate gear 71 on the transition gearbox 7 is the same as the mounting structure of the transmission gear 5 on the transmission box 11.

[0035] Specifically, in this embodiment, after the chain drive is replaced with gear drive, the number of gears increases due to spacing issues. By combining the gearbox 1 and the transition gearbox 7, multiple gears requiring transmission can be distributed separately within the gearbox 1 and the transition gearbox 7, making reasonable use of space and facilitating later maintenance. This also allows for individual maintenance of the gears inside the gearbox 1 and the transition gearbox 7.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A side transmission device for a corn header, characterized in that, include: The gearbox (1) includes a transmission box (11) and a spindle box (12) detachably mounted at the end of the transmission box (11); The main gear (2) is rotatably disposed inside the main spindle box (12), and the main gear (2) is detachably installed inside the main spindle box (12); The auxiliary gear (3) is rotatably disposed inside the transmission box (11) and located at the end of the transmission box (11). When the main shaft box (12) is installed on the transmission box (11), the main gear (2) and the auxiliary gear (3) remain in mesh. Adjusting shims (4) are placed between the spindle box (12) and the transmission box (11) to adjust the gap between the spindle box (12) and the transmission box (11).

2. The side transmission device for a corn header as described in claim 1, characterized in that, Along the length of the transmission box (11), a plurality of transmission gears (5) are rotatably arranged inside the transmission box (11). The plurality of transmission gears (5) are meshed with each other in sequence, and the transmission gear (5) adjacent to the auxiliary gear (3) is meshed with the auxiliary gear (3).

3. The side transmission device for a corn header as described in claim 1, characterized in that, When the spindle box (12) is fixed to the transmission box (11), the spindle box (12) and the transmission box (11) form a sealed box.

4. The side transmission device for a corn header as described in claim 3, characterized in that, The gearbox (1) is inclined in the vertical direction as a whole, and the main shaft box (12) is located at the higher end of the transmission box (11). Threaded plugs (6) are installed on both the upper and lower sides of the bottom end of the transmission box (11).

5. The side transmission device for a corn header as described in claim 4, characterized in that, The top of the main shaft box (12) is also provided with a breather valve (121) for maintaining the pressure balance inside and outside the gearbox (1).

6. The side transmission device for a corn header as described in claim 1, characterized in that, The number of the adjusting shims (4) is multiple, and the multiple adjusting shims (4) are sealed together.

7. The side transmission device for a corn header as described in claim 1, characterized in that, The spindle box (12) is rotatably equipped with a main drive shaft (21), the main gear (2) is detachably mounted on the main drive shaft (21), and bearings (22) for mounting the drive shaft are installed on the inner walls of opposite sides of the spindle box (12), and oil seals (23) are installed on the outer side of the bearings (22).

8. The side transmission device for a corn header as described in claim 7, characterized in that, The spindle box (12) has a mounting hole for mounting the bearing (22) on its side wall, and a retaining ring (24) for limiting the position of the bearing (22) is installed on the inner wall of the mounting hole.

9. The side transmission device for a corn header as described in claim 1, characterized in that, A transition gearbox (7) is also provided on one side of the gearbox (1). A plurality of intermediate gears (71) are rotatably arranged inside the transition gearbox (7) and meshed in sequence. The intermediate gears (71) are connected to the auxiliary gear (3) in a transmission. The transition gearbox (7) is a sealed box and a cover plate (72) is detachably installed on the top of the transition gearbox (7).

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