An up-pull bush cutting header

Abstract

The utility model relates to the field of agricultural machinery device, concretely relates to a transmission bush cutting header, including header mounting bracket and transmission box, transmission box install in header mounting bracket, its characterized in that: the upper portion of transmission box is provided with a plurality of drive devices, is provided with gear group inside, is provided with pronger and straw cutting device below, drive device drives pronger and straw cutting device, straw cutting device cuts off shrub branch, and pronger sends shrub branch cut off to the rear into the harvester feeding device, and the rear end of header mounting bracket is provided with auxiliary ground wheel, solves the problem that the present stage transmission form header box is damaged to stubble mouth and stalk or transmission form header structure is complicated, transmission efficiency is low, and the maintenance cost is high.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and devices, specifically to an upper-drive shrub cutting platform. Background Technology

[0002] Currently, the widely used shrub coppicing headers on the market mainly draw on the structure of the headers for silage corn harvesters. By modifying some parts, they enable coppicing of Caragana korshinskii and Broussonetia papyrifera. These coppicing headers include upper drive and lower drive types. In the lower drive type, power is transmitted to the cutter head and rollers through a gear transmission box at the bottom of the cutter head. Because the transmission box is located at the bottom of the cutter head, it is easy to cause the box to scratch the stubble and stems. Existing upper drive headers transmit power to the cutter head and rollers through an open belt drive or chain drive. Because the cutter head and roller rotate at relatively high speeds, the design of the transmission structure is complex, the transmission efficiency is low, and the maintenance cost is high.

[0003] In summary, an upper-drive shrub coppicing cutterhead is proposed to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to provide an upper-drive shrub cutting platform to solve the problems of damage to the stubble and stem caused by the current lower-drive cutting platform housing, or the complex structure, low transmission efficiency, and high maintenance cost of the upper-drive cutting platform.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A top-drive shrub coppicing cutter includes a cutter mounting frame and a transmission housing. The transmission housing is installed inside the cutter mounting frame. Several drive devices are arranged above the transmission housing, and gear sets are installed inside. A stalk-pulling device and a straw-cutting device are arranged below the stalk-pulling device. The drive devices drive the stalk-pulling device and the straw-cutting device through the gear sets. The straw-cutting device cuts shrub branches, and the stalk-pulling device sends the cut shrub branches to the rear to enter the harvester's feeding device. An auxiliary ground wheel is provided at the rear end of the cutter mounting frame.

[0007] Further specifying, the driving device is a hydraulic motor, which includes a first cutter head drive motor, a middle motor, and a second cutter head drive motor. The middle motor is located between the first and second cutter head drive motors. The gear set includes a first reeling gear, a second reeling gear, a drive gear, a first idler gear, and a second idler gear. The output shaft of the middle motor is connected to the drive gear. The middle motor drives the drive gear to rotate. The drive gear meshes with the first idler gear. The first idler gear meshes with the second idler gear and the first reeling gear. The second idler gear meshes with the second reeling gear. The first and second reeling gears drive the left and right reeling devices to rotate in opposite directions.

[0008] Further specifying, the straw cutting device has two parts, each including a flange, a cutter head, and a straw cutting blade. The flange is connected to the drive shaft of the first cutter head drive motor and the second cutter head drive motor via a spline connection. The cutter head is bolted to the bottom of the flange, and the straw cutting blade is bolted to the bottom of the cutter head.

[0009] Further specifying, the rice-reeling device has two parts, each including a vertical roller cylinder and a rice-reeling disc. There are two vertical roller cylinders, which are respectively sleeved on the outside of the drive shafts located on the left and right sides. The first rice-reeling gear and the second rice-reeling gear are respectively installed on the upper end of the vertical roller cylinder. Bearings and oil seals are provided inside the vertical roller cylinder. Rice-reeling teeth and rice-reeling rods are welded on the outer wall of the vertical roller cylinder. The rice-reeling disc is installed below the vertical roller cylinder by bolts. The rotation direction of the cutter discs on both sides is opposite to the rotation direction of the vertical roller cylinder.

[0010] Furthermore, there are two auxiliary ground wheels, which are respectively installed on the left and right sides of the rear end of the cutting table mounting frame.

[0011] The advantages of this utility model over the current technology are as follows:

[0012] 1. The upper transmission gearbox is directly driven by a hydraulic system, replacing the traditional chain or belt drive and simplifying the transmission structure.

[0013] 2. The transmission housing adopts a high-position layout, with the gearbox far away from the bottom working area of ​​the cutter head, and the bottom of the cutter head does not require support. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the cutting table mounting bracket of this utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the transmission housing of this utility model.

[0018] The markings in the diagram correspond to: 1-Cutter mounting frame, 2-Transmission box, 3-First cutter head drive motor, 4-Central motor, 5-Second cutter head drive motor, 6-First reeling gear, 7-Second reeling gear, 8-Drive gear, 9-First idler wheel, 10-Second idler wheel, 11-Drive shaft, 12-Vertical roller cylinder, 13-Reeling disc, 14-Reeling teeth, 15-Reeling rod, 16-Flange, 17-Cutter head, 18-Straw cutting blade, 19-Auxiliary ground wheel. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments. Example

[0020] like Figures 1-4 As shown, a top-drive shrub coppicing cutter includes a cutter mounting frame 1 and a transmission housing 2. Two auxiliary wheels 19 are provided on the left and right sides of the rear end of the cutter mounting frame 1 to facilitate its movement. The transmission housing 2 is installed inside the cutter mounting frame 1. Several drive devices are arranged above the transmission housing 2, and gear sets are installed inside. A straw-pulling device and a straw-cutting device are arranged below the transmission housing 2. The drive devices are hydraulic motors, including a first cutter head drive motor 3, a middle motor 4, and a second cutter head drive motor 5. The middle motor 4 is located below the first cutter head drive motor 5. Between motor 3 and the second cutter head drive motor 5, the gear set includes a first reeling gear 6, a second reeling gear 7, a drive gear 8, a first idler gear 9 and a second idler gear 10. The output shaft of the middle motor 4 is connected to the drive gear 8. The middle motor 4 drives the drive gear 8 to rotate. The drive gear 8 meshes with the first idler gear 9. The first idler gear 9 and the second idler gear 10 mesh with the first reeling gear 6. The second idler gear 10 meshes with the second reeling gear 7. The first reeling gear 6 and the second reeling gear 7 drive the left and right reeling devices to rotate in opposite directions.

[0021] The reeling device includes a vertical roller cylinder 12 and a reeling disc 13. There are two vertical roller cylinders 12, which are respectively sleeved on the outside of the drive shafts 11 located on the left and right sides, i.e., the drive shafts 11 pass through the vertical roller cylinders 12. Bearings and oil seals are installed inside the vertical roller cylinders 12. Reeling teeth 14 and reeling rods 15 are welded on the outer wall of the vertical roller cylinders 12. The reeling disc 13 is installed below the vertical roller cylinders 12 by bolts. There are two straw cutting devices, each including a flange 16, a cutter disc 17 and a straw cutting blade 18. The flange 16 is connected to the drive shaft 11 of the first cutter disc drive motor 3 and the second cutter disc drive motor 5 by splines and is located below the vertical roller cylinders 12. The cutter disc 17 is installed below the flange 16 by bolts. The straw cutting blade 18 is installed below the cutter disc 17 by bolts. It also includes an auxiliary feeding vertical roller, which is located behind the reeling device and is used to assist in reeling the cut branches to the rear to enter the harvester feeding system.

[0022] During operation, the first cutter head drive motor 3 and the second cutter head drive motor 5 drive the transmission shaft 11 to rotate. The rotating transmission shaft 11 drives the cutter head 17 and straw cutting blade 18 on the flange 16 to rotate at a high speed, cutting the shrub branches. The middle motor 4 works, driving the drive gear 8 to rotate, thereby driving the first idler wheel 9 and the second idler wheel 10 to rotate. The first idler wheel 9 and the second idler wheel 10 drive the first reeling gear 6 and the second reeling gear 7 to rotate inward. The reeling teeth 14 on the reeling disc 13 and the vertical roller cylinder 12 push the branches cut by the straw cutting blade 18 to the rear to enter the harvester's feeding system.

[0023] The system directly drives the transmission housing with a hydraulic system, replacing the traditional chain / belt drive. This simplifies the transmission structure. The transmission system adopts a high-position layout, with gears far from the bottom working area of ​​the cutter head. The bottom of the cutter head does not require support, allowing for direct power transmission and eliminating mechanical transmission losses. The multi-stage reduction mechanism is eliminated, reducing the gearbox volume by more than 40% and maintenance costs by 50%. The differential ratio is adjusted in real time, improving the smoothness of straw conveying by 30%. The system allows for rapid switching between forward and reverse rotation, avoiding downtime caused by stalk accumulation and improving harvesting efficiency. It completely avoids the problem of the lower transmission header gearbox scraping the stubble, increasing the stubble integrity rate to over 95%. The hydraulic system and gearbox sealing performance is superior to open chain and belt drives, reducing the failure rate by more than 70% in dusty environments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The above provides a detailed description of the upper-drive shrub cutting platform provided by this utility model. The specific embodiments are only used to help understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from it, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A top-drive shrub coppicing cutter, comprising a cutter mounting frame (1) and a transmission housing (2), wherein the transmission housing (2) is installed within the cutter mounting frame (1), characterized in that: The transmission box (2) is equipped with several driving devices on its upper part and gear sets inside. It is equipped with a hoe-pulling device and a straw-cutting device below it. The straw-cutting device is located below the hoe-pulling device. The driving devices drive the hoe-pulling device and the straw-cutting device. The straw-cutting device cuts the shrub branches. The hoe-pulling device sends the cut shrub branches to the rear to enter the harvester's feeding device. The rear end of the header mounting frame (1) is equipped with auxiliary ground wheels (19).

2. The upper-drive shrub cutting platform according to claim 1, characterized in that: The driving device is a hydraulic motor, which is a first cutter head drive motor (3), a middle motor (4), and a second cutter head drive motor (5). The middle motor (4) is located between the first cutter head drive motor (3) and the second cutter head drive motor (5). The gear set includes a first reeling gear (6), a second reeling gear (7), a drive gear (8), a first idler gear (9), and a second idler gear (10). The output shaft of the middle motor (4) is connected to the drive gear (8). The middle motor (4) drives the drive gear (8) to rotate. The drive gear (8) meshes with the first idler gear (9). The first idler gear (9) meshes with the second idler gear (10) and the first reeling gear (6). The second idler gear (10) meshes with the second reeling gear (7). The first reeling gear (6) and the second reeling gear (7) drive the left and right reeling devices to rotate in opposite directions.

3. The upper-drive shrub cutting platform according to claim 2, characterized in that: The straw cutting device has two parts, each including a flange (16), a blade (17) and a straw cutting blade (18). The flange (16) is connected by a spline to the drive shaft (11) of the first blade drive motor (3) and the second blade drive motor (5). The blade (17) is bolted to the bottom of the flange (16), and the straw cutting blade (18) is bolted to the bottom of the blade (17).

4. The upper-drive shrub cutting platform according to claim 3, characterized in that: The rice-picking device has two parts, each including a vertical roller cylinder (12) and a rice-picking disc (13). There are two vertical roller cylinders (12), which are respectively sleeved on the outside of the transmission shafts (11) located on the left and right sides. The first rice-picking gear (6) and the second rice-picking gear (7) are respectively installed on the upper end of the vertical roller cylinder (12). The vertical roller cylinder (12) is provided with bearings and oil seals. Rice-picking teeth (14) and rice-picking rods (15) are welded on the outer wall of the vertical roller cylinder (12). The rice-picking disc (13) is installed below the vertical roller cylinder (12) by bolts. The rotation direction of the cutter discs on both sides is opposite to the rotation direction of the vertical roller cylinder (12).

5. The upper-drive shrub cutting platform according to claim 1, characterized in that: There are two auxiliary ground wheels (19), which are installed on the left and right sides of the rear end of the cutting table mounting frame (1).

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