A rotary tiller for a rotary tiller

Abstract

The utility model relates to a rotary tiller's rotary tiller device belongs to agricultural machinery technical field. Mainly include frame, transmission case, rotary tiller knife shaft, spline shaft, middle plough, frame install on tractor, transmission case install in the middle part of frame, transmission case input shaft is connected with tractor output shaft drive, the bottom of both sides of frame is equipped with mounting panel, and the both ends of rotary tiller knife shaft are installed on transmission case and mounting panel through spline shaft and bearing seat, and the spline shaft of one end of rotary tiller knife shaft near transmission case is connected with transmission case output shaft drive, the middle plough is installed in transmission case front side bottom end, the both ends of rotary tiller knife shaft are installed through spline shaft, and the both ends of rotary tiller knife shaft are allowed to have certain installation clearance, reduce the accuracy requirement when rotary tiller knife shaft installs, increase the adaptation range, need not frequently overhaul, correct to frame, prolong the service life of frame, reduce maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and specifically relates to a rotary tiller's rotary tillage device. Background Technology

[0002] Rotary tillers are agricultural machines used in conjunction with tractors to perform tilling and harrowing operations. They can be classified into two types based on the configuration of their rotary tiller shafts: horizontal shaft type and vertical shaft type. Currently, horizontal shaft rotary tillers, with the shaft horizontally mounted, are more commonly used. Rotary tillers utilize the shearing force generated by the rapid rotation of the shaft to break up and till the soil. This causes significant wear on the shaft, necessitating its replacement. However, agricultural machinery often operates under harsh conditions with high vibration, making scraping and collisions unavoidable. This can affect the frame's precision, making it difficult to install the replacement shaft. Consequently, the entire frame needs adjustment and calibration, which to some extent impacts work efficiency and increases maintenance costs. Summary of the Invention

[0003] To overcome the problems of poor operating conditions, high vibration, and unavoidable scraping and collisions in agricultural machinery in the background technology, which arbitrarily affect the accuracy of the frame and make it impossible to install the cutter shaft when replacing it, resulting in the need for the entire frame to be adjusted and corrected, which to some extent affects work efficiency and increases maintenance costs, this utility model provides a rotary tiller device; the rotary tiller cutter shaft 3 is installed at both ends through splined shafts 4, and a certain installation gap is allowed at both ends of the rotary tiller cutter shaft 3, which reduces the accuracy requirements for the installation of the rotary tiller cutter shaft 3, increases the adaptability range, eliminates the need for frequent frame inspection and correction, extends the service life of the frame, and reduces maintenance costs.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A rotary tiller's rotary tillage device mainly includes a frame 1, a transmission box 2, a rotary tiller blade shaft 3, a splined shaft 4, and a central plow 5. The frame 1 is mounted on a tractor, and the transmission box 2 is mounted in the middle of the frame 1. The input shaft of the transmission box 2 is connected to the output shaft of the tractor. Mounting plates 6 are provided at the bottom of both sides of the frame 1. The two ends of the rotary tiller blade shaft 3 are mounted on the transmission box 2 and the mounting plates 6 through splined shafts 4 and bearing seats. The splined shaft 4 on the rotary tiller blade shaft 3 near the end of the transmission box 2 is connected to the output shaft of the transmission box 2. The central plow 5 is mounted at the bottom front side of the transmission box 2.

[0005] Furthermore, the rotary tiller shaft 3 includes a rotating shaft 31, a fixed cutter disc 32, a pressure plate 33, and rotary tillers 34. The fixed cutter disc 32 is evenly installed on the rotating shaft 31, and the rotary tillers 34 are located between the fixed cutter disc 32 and the pressure plate 33 and are fixed by bolts. For ease of installation, the pressure plate 33 has two semi-circular ring structures.

[0006] Furthermore, the rotary tiller blade 34 is installed with its length direction offset from the radial direction of the fixed blade disc 32, and the rotary tiller blade 34 is fixed by two bolts.

[0007] Furthermore, a protective plate 21 is welded to the bottom of the transmission box 2.

[0008] Furthermore, a wear-resistant block 61 is bolted to the bottom of the mounting plate 6.

[0009] Furthermore, the frame 1 is hinged to the tractor via three connecting arms 11.

[0010] Furthermore, the mounting plate 6 is provided with reinforcing strips 62.

[0011] The beneficial effects of this utility model are: This utility model uses splined shafts to install the rotary tiller blade shaft at both ends, allowing for a certain installation gap at both ends. This reduces the precision requirements for installation, increases the compatibility range, eliminates the need for frequent frame inspection and calibration, extends the frame's service life, and reduces maintenance costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the main axonometric projection of this utility model.

[0013] Figure 2 This is a three-dimensional schematic diagram of the elevation axis measurement of this utility model.

[0014] Figure 3 This is a schematic diagram of the installation structure of the rotary tiller shaft and spline shaft of this utility model.

[0015] Figure 4 This is a schematic diagram of the rotary tiller shaft structure of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0017] This utility model discloses a rotary tiller's rotary tillage device, which mainly includes a frame 1, a transmission box 2, a rotary tiller shaft 3, a splined shaft 4, and a central plow 5. The frame 1 is mounted on a tractor, and the transmission box 2 is mounted in the middle of the frame 1. The input shaft of the transmission box 2 is connected to the output shaft of the tractor. Mounting plates 6 are provided on both sides of the bottom of the frame 1. The two ends of the rotary tiller shaft 3 are mounted on the transmission box 2 and the mounting plates 6 through splined shafts 4 and bearing seats. The splined shaft 4 on the rotary tiller shaft 3 near the transmission box 2 is connected to the output shaft of the transmission box 2. The central plow 5 is mounted on the front bottom of the transmission box 2. The two ends of the rotary tiller shaft 3 are mounted through splined shafts 4. A certain installation gap is allowed at both ends of the rotary tiller shaft 3 to reduce the precision requirements during installation, increase the adaptability range, eliminate the need for frequent frame inspection and correction, extend the service life of the frame, and reduce maintenance costs.

[0018] In this embodiment, the rotary tiller shaft 3 includes a rotating shaft 31, a fixed cutter disc 32, a pressure plate 33, and rotary tillers 34. The fixed cutter disc 32 is evenly installed on the rotating shaft 31, and the rotary tillers 34 are located between the fixed cutter disc 32 and the pressure plate 33 and are fixed by bolts. To facilitate installation, the pressure plate 33 has two semi-circular ring structures. The rotary tillers 34 are clamped and installed by the fixed cutter disc 32, the pressure plate 33, and the bolts. The installation structure is simple and the connection is reliable.

[0019] In this embodiment, the length direction of the rotary tiller 34 is deviated from the radial direction of the fixed cutter disc 32. When the size of the fixed cutter disc 32 is fixed, the length of the connection position of the rotary tiller 34 can be increased, the pressing area can be increased, the rotary tiller 34 is fixed by bolt connection, the distance between the bolts (8) is increased, the shearing force of the connecting bolts is reduced, and the service life of the bolts is extended.

[0020] In this embodiment, a protective plate 21 is welded to the bottom of the transmission box 2. The protective plate 21 can prevent the bottom of the transmission box 2 from being worn by mud or weeds, prevent the transmission box 2 from being worn or damaged and leaking oil, and extend the service life of the transmission box 2. The protective plate 21 can be replaced when it is worn.

[0021] In this embodiment, a wear-resistant block 61 is bolted to the bottom of the mounting plate 6. The wear-resistant block 61 can effectively prevent the bottom of the mounting plate 6 and the bearing seat from being worn by mud or weeds. The wear-resistant block 61 can be replaced after it is worn.

[0022] In this embodiment, the frame 1 is hinged to the tractor via three connecting arms 11.

[0023] In this embodiment, the mounting plate 6 is provided with a reinforcing strip 62.

[0024] Work process: The rotary tiller shaft 3 is installed at both ends via spline shaft 4. A certain installation gap is allowed at both ends of the rotary tiller shaft 3, which reduces the accuracy requirements of the rotary tiller shaft 3 during installation, increases the adaptability range, eliminates the need for frequent maintenance and correction of the frame, extends the service life of the frame, and reduces maintenance costs. The length direction of the rotary tiller 34 is deviated from the radial direction of the fixed cutter disc 32, which can increase the length of the connection position of the rotary tiller 34 and increase the pressing area. The rotary tiller 34 is fixed by bolt connection, which increases the distance between the bolts (8), reduces the shear force of the connecting bolts, and extends the service life of the bolts. The protective plate 21 can prevent the bottom of the transmission box 2 from being worn by the soil or weeds, prevent the transmission box 2 from being worn and damaged and leaking oil, and extend the service life of the transmission box 2. The protective plate 21 can be replaced after it is worn. The wear-resistant block 61 can effectively prevent the bottom of the mounting plate 6 and the bearing seat from being worn by the soil or weeds. The wear-resistant block 61 can be replaced after it is worn.

[0025] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A rotary tillage device for a rotary tiller, characterized in that: The rotary tiller's rotary tillage device includes a frame (1), a transmission box (2), a rotary tiller shaft (3), a splined shaft (4), and a central plow (5). The frame (1) is mounted on a tractor, and the transmission box (2) is mounted in the middle of the frame (1). The input shaft of the transmission box (2) is connected to the output shaft of the tractor. Mounting plates (6) are provided at the bottom of both sides of the frame (1). The two ends of the rotary tiller shaft (3) are mounted on the transmission box (2) and the mounting plates (6) through splined shafts (4) and bearing seats. The splined shaft (4) on the rotary tiller shaft (3) near the end of the transmission box (2) is connected to the output shaft of the transmission box (2). The central plow (5) is mounted at the bottom front side of the transmission box (2).

2. The rotary tillage device of a rotary tiller as described in claim 1, characterized in that: The rotary tiller shaft (3) includes a rotating shaft (31), a fixed cutter disc (32), a pressure plate (33), and rotary tillers (34). The fixed cutter disc (32) is evenly installed on the rotating shaft (31), and the rotary tillers (34) are located between the fixed cutter disc (32) and the pressure plate (33) and are fixed by bolts. For easy installation, the pressure plate (33) is a structure of two semi-circular rings.

3. The rotary tillage device of a rotary tiller as described in claim 2, characterized in that: The rotary tiller (34) is installed with its length direction offset from the radial direction of the fixed cutter head (32), and the rotary tiller (34) is fixed by two bolts.

4. The rotary tillage device of a rotary tiller as described in any one of claims 1-3, characterized in that: The bottom of the transmission box (2) is welded with a protective plate (21).

5. The rotary tillage device of a rotary tiller as described in claim 4, characterized in that: The mounting plate (6) has a wear-resistant block (61) bolted to its bottom.

6. The rotary tillage device of a rotary tiller as described in any one of claims 1-3 and 5, characterized in that: The frame (1) is hinged to the tractor via three connecting arms (11).

7. The rotary tillage device of a rotary tiller as described in claim 6, characterized in that: The mounting plate (6) is provided with reinforcing strips (62).

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