Rotary cultivator gearbox and using method thereof

Abstract

The invention belongs to the technical field of rotary cultivator gearboxes, and discloses a rotary cultivator gearbox and a using method thereof.The space in a gearbox case is divided into a front chamber and a rear chamber through a vertical plate, an input shaft penetrates into the front chamber from the front plate, and the rear end of the input shaft penetrates through the vertical plate backwards and then is detachably connected with a driving gear; transition shafts are rotationally arranged on the two sides of the input shaft in the front chamber, the rear ends of the transition shafts penetrate through the vertical plate backwards and then are detachably connected with driven gears, the driving gear is meshed with the two driven gears, and an operation door is arranged on the rear wall of the rear chamber; the two first output shafts are arranged on the left and the right and penetrate through the two side walls of the front chamber respectively, the transition shaft is connected with first bevel gears in the front chamber, the indoor ends of the output shafts are connected with second bevel gears, the first bevel gears are meshed with the second bevel gears on the corresponding sides, and the installation directions of the two first bevel gears are opposite. The speed can be adjusted by replacing the three cylindrical gears in the rear chamber, and replacement and speed adjustment are convenient; the two bevel gear sets share loads on the two sides, the device is not prone to damage, and the service life is longer.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary tiller gearboxes, and particularly relates to a rotary tiller gearbox and a use method thereof. Background Art

[0002] The rotary tiller gearbox is generally installed on the top of the rotary tiller. It is a power transmission mechanism connected between the tractor power shaft and the rotary tiller blade shaft, which plays the role of slowing down and changing the direction of power.

[0003] If a traditional gearbox needs to adjust its speed, the internal bevel gear set needs to be replaced. During the replacement process, the output shaft needs to be completely removed. Due to the characteristics of the bevel gear, the position of the gear will also change when the bevel gear is replaced. However, the space inside the gearbox is limited, making the replacement operation more inconvenient.

[0004] In addition, the output shaft of the traditional rotary tiller is a through shaft, which is driven by a pair of bevel gears in the box. The gears are easily damaged if the load is too large. Summary of the Invention

[0005] In order to overcome the above technical problems, the present invention provides a rotary tiller gearbox that is easy to adjust speed and has a longer service life, and a method for using the same.

[0006] The present invention adopts the following technical solutions: A rotary tiller gearbox comprises a chassis, which is connected to an input shaft and an output shaft. The chassis is divided into a front chamber and a rear chamber by a vertical plate inside the chassis. The input shaft passes through the front plate into the front chamber, and the rear end of the input shaft can be detachably connected to a driving gear after passing through the vertical plate backward. Transition shafts are rotatably arranged on both sides of the input shaft in the front chamber, and the rear end of the transition shaft can be detachably connected to a driven gear after passing through the vertical plate backward. The driving gear meshes with the two driven gears, and an operating door is provided on the rear wall of the rear chamber; two output shafts are provided, one on the left and one on the right, and the two output shafts respectively penetrate the two side walls of the front chamber, the transition shaft is connected to bevel gear 1 in the front chamber, and the indoor end of the output shaft is connected to bevel gear 2, the bevel gear 1 meshes with the bevel gear 2 on the corresponding side, and the installation directions of the two bevel gears 1 are opposite.

[0007] Preferably, the front plate of the front chamber is installed with a front bearing, the vertical plate is correspondingly installed with a rear bearing, and the transition shaft is rotatably arranged through the front bearing and the rear bearing.

[0008] Preferably, a bearing chamber is installed on the outer wall of the side wall of the front chamber, and the output shaft passes through the bearing chamber.

[0009] The method for using the rotary tiller gearbox adopts the above rotary tiller gearbox and also includes the following: S1. The chassis is mounted on the top of the rotary tiller, the input shaft is connected to the tractor power shaft, and the two output shafts are connected to the ends of the cutter shaft through the drive rod on the rotary tiller and the secondary reduction gearbox at the end; S2. The power shaft drives the input shaft to rotate the driving gear, which in turn drives the passive gear, which in turn drives the transition shaft to rotate bevel gear 1, which in turn drives bevel gear 2 to rotate the two output shafts in the forward direction, ultimately driving the cutter shaft to rotate; S3. Open the operating door and change the transmission ratio of the gearbox by replacing the driving gear and the driven gear with different transmission ratios.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with two left and right output shafts, and transition shafts are respectively arranged between the input shaft and the two output shafts for transmission. A bevel gear transmission is used between the transition shaft and the output shafts, and a column gear transmission is used between the input shaft and the transition shaft. The three column gears are located in a specially divided rear chamber in the box, which is convenient for replacement and speed regulation. Two sets of bevel gear groups are used in the box to share the load on both sides, the device is not easy to be damaged, and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is an overall schematic diagram of the present invention; Figure 3 yes Figure 1 A top view of Figure 4 This is a schematic diagram of the traditional gearbox structure.

[0012] Description of reference numerals: 1. Chassis; 2. Input shaft; 3. Output shaft; 4. Driving gear; 5. Transition shaft; 6. Passive gear; 7. Vertical plate; 8. Bevel gear 1; 9. Bevel gear 2; 10. Operating door; 11. Front chamber; 12. Rear chamber; 13. Bearing chamber; 14. Front bearing; 15. Rear bearing; 16. Snap ring. DETAILED DESCRIPTION

[0013] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Unless otherwise specified, the raw materials and equipment used are commercially available or commonly used in the art. The methods in the embodiments, unless otherwise specified, are conventional methods in the art. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0014] like Figures 1 to 3, a rotary tiller gearbox includes a chassis 1, in which the space inside the chassis is divided into a front chamber 11 and a rear chamber 12 by a welded vertical plate 7. The input shaft 2 penetrates the front chamber 11 from the front plate, and the rear end of the input shaft 2 is coaxially keyed to the driving gear 4 after passing through the vertical plate 7 backwards, and is limited by a snap ring 16 at the end. A transition shaft 5 is rotatably arranged on both sides of the input shaft 2 in the front chamber 11, and the transition shaft 5 is parallel to the input shaft 2. Two front bearings 14 are installed on the front plate of the front chamber 11, and two rear bearings 15 are correspondingly installed on the vertical plate 7. The transition shaft 5 is rotatably arranged in the chassis 1 through the front bearings 14 and the rear bearings 15. The rear end of the transition shaft 5 penetrates the vertical plate 7 backwards and is coaxially keyed to the driven gear 6. The end snap ring 16 is limited, and the driving gear 4 engages with the two driven gears 6. An operating door 10 is provided on the rear wall of the rear chamber 12, and the operating door 10 is fixed to the chassis 1 shell by bolts. By removing the bolts and opening the operating door 10, the driving gear 4 and the driven gear 6 can be further disassembled and replaced. Two output shafts 3 are set, one on the left and one on the right. The bearing chamber 13 is installed on the outer wall of the side wall of the front chamber 11. The output shaft 3 passes through the bearing chamber 13 and penetrates the side wall of the front chamber 11. The transition shaft 5 is connected to the bevel gear 1 8 in the front chamber 11. The inner end of the output shaft 3 is connected to the bevel gear 2 9. The bevel gear 1 8 engages with the bevel gear 2 9 on the corresponding side. The installation directions of the two bevel gears 1 8 are opposite, thereby ensuring that the two output shafts 3 rotate in the same direction.

[0015] The use of the rotary tiller gearbox includes the following: S1. The installation method is consistent with that of a traditional gearbox. Chassis 1 is mounted on top of the tiller. Input shaft 2 is connected to the tractor power shaft. Two output shafts 3 are connected to the ends of the cutter shaft through the drive rod on the tiller and the secondary reduction gearbox at the end. S2. The tractor power shaft drives the input shaft 2 to drive the driving gear 4 to rotate, and the driving gear 4 then drives the driven gear 6 to drive the transition shaft 5 to drive the bevel gear 8 to rotate, and then drives the bevel gear 9 to drive the two output shafts 3 to rotate forward, and finally drives the cutter shaft to rotate; S3. Open the operating door 10, remove the snap ring 16, and remove the driving gear 4 and the driven gear 6. By replacing the driving gear 4 and the driven gear 6 with different transmission ratios, the transmission ratio of the gearbox can be changed to achieve speed regulation.

[0016] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the above embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rotary tiller gearbox, comprising a chassis, the chassis connecting an input shaft and an output shaft, characterized in that: The space inside the chassis is divided into a front chamber and a rear chamber by a vertical plate. The input shaft passes through the front chamber from the front plate. The rear end of the input shaft can be detachably connected to the driving gear after passing through the vertical plate backward. A transition shaft is rotatably arranged on both sides of the input shaft in the front chamber. The rear end of the transition shaft can be detachably connected to the driven gear after passing through the vertical plate backward. The driving gear meshes with the two driven gears. An operating door is arranged on the rear wall of the rear chamber. Two output shafts are arranged on the left and right, and the two output shafts penetrate the two side walls of the front chamber respectively. The transition shaft is connected to bevel gear 1 in the front chamber, and the indoor end of the output shaft is connected to bevel gear 2. Bevel gear 1 meshes with bevel gear 2 on the corresponding side, and the installation directions of the two bevel gears 1 are opposite.

2. A rotary tiller gearbox according to claim 1, characterized in that: The front plate of the front chamber is equipped with a front bearing, the vertical plate is equipped with a rear bearing correspondingly, and the transition shaft is rotatably arranged through the front bearing and the rear bearing.

3. A rotary tiller gearbox according to claim 1, characterized in that: A bearing chamber is installed on the outer wall of the side wall of the front chamber, and the output shaft passes through the bearing chamber.

4. The method for using the rotary tiller gearbox is characterized in that: The rotary tiller gearbox according to any one of claims 1 to 3 further comprises the following: S1. The chassis is mounted on the top of the rotary tiller, the input shaft is connected to the tractor power shaft, and the two output shafts are connected to the ends of the cutter shaft through the drive rod on the rotary tiller and the secondary reduction gearbox at the end; S2. The power shaft drives the input shaft to rotate the driving gear, which in turn drives the passive gear, which in turn drives the transition shaft to rotate bevel gear 1, which in turn drives bevel gear 2 to rotate the two output shafts in the forward direction, ultimately driving the cutter shaft to rotate; S3. Open the operating door and change the transmission ratio of the gearbox by replacing the driving gear and the driven gear with different transmission ratios.

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