Deep ploughing rotary cultivator
By using hollow rollers and multi-cutting plate structures in the rotary tiller, the problems of depth and operation blind spots of the rotary tiller are solved, and deeper cultivating operations and higher efficiency are achieved.
Patent Information
- Application Number
- CN202421530117.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Due to the limited diameter and length of the rotary tiller, the existing horizontal axis rotary tiller cannot achieve deep tillage operation, and the installation of side panels leads to blind spots, affecting efficiency.
Instead of the horizontal axis, the cover of the rotary tillage knife is expanded through the folded edge structure of the hanging plate and the side plate, reducing the dead corners of the work, and multiple cutter plates are installed on the outer wall of the roller to disperse the torque and improve the depth and coverage of the rotary tillage.
The rotary tillage depth and operating efficiency are improved, while reducing the weight and structural strength of the equipment, avoiding the risk of the rotary tillage knife breaking.
Smart Images
Figure CN222235436U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural or forestry machinery, in particular to a deep tillage rotary tiller. Background Art
[0002] A rotary tiller is a tilling machine that can be used with a tractor to complete ploughing and harrowing operations. It is often used to restore the soil tillage structure, improve the soil's ability to store water and retain moisture, eliminate some weeds, reduce pests and diseases, level the surface, and improve the standard of agricultural mechanization operations. The common rotary tiller with a horizontal axis and a central gearbox structure has a horizontal axis extending from each side of the central gearbox, and a rotary tiller is installed on the horizontal axis; the tillage operation depth of this horizontal axis rotary tiller is limited by the diameter of the horizontal axis and the length of the rotary tiller. In order to reduce costs and reduce weight, the diameter of the horizontal axis is subject to certain restrictions, and the diameter of the horizontal axis and the length of the rotary tiller determine the depth of rotary tillage; in order to limit production costs, the thickness of the material used for the rotary tiller is subject to certain restrictions. When the material thickness is limited, the length of the rotary tiller cannot be too long, otherwise it is easy to break due to excessive torque during tillage operations. Due to the above two limitations, ordinary horizontal axis rotary tillers cannot achieve deep tillage operations, and the usual operating depth does not exceed 30 cm. The "Deep Tillage Rotary Tiller" disclosed in Chinese Patent 201520489817X, with the authorization announcement number CN204859902U, has a roller mounted on the blade shaft, and the rotary blade is mounted on the outer surface of the mounting roller through a mounting plate, so that the depth of tillage operation can be effectively increased without increasing the diameter of the blade shaft and the length of the rotary blade, and deep tillage operation can be achieved. However, at the same time, this design scheme is difficult to manufacture because it requires the roller to be mounted on a longer blade shaft; in addition, because the side plate of the bracket needs to be installed on the outer end of the blade shaft, the operating range of the rotary blade can only be limited to the inner side of the side plate, and a certain operating blind area will be formed directly below the side plate during on-site operation, affecting the operating efficiency. Utility Model Content
[0003] The first purpose of the utility model is to provide a deep tillage rotary tiller which eliminates the blind spots of side operations and has a large tillage depth, while ensuring a large operating depth, expanding the coverage of the rotary tillage blade operation and improving the efficiency of the rotary tillage operation.
[0004] The technical solutions adopted by the utility model to solve the technical problems are as follows:
[0005] The utility model describes a deep tillage rotary tiller comprising a frame consisting of a crossbeam and longitudinal beams fixedly connected at both ends of the crossbeam, a gear transmission box fixedly installed in the frame, and a side plate fixedly connected to the lower end of the longitudinal beam, the lower end of the side plate has a side plate folded edge bent inwardly into a right angle, a hanging plate is fixedly connected to the side plate folded edge by bolts, a hanging plate bearing is embedded in the hanging plate, a roller is installed between the hanging plate bearing and the output end of the gear transmission box, the outer end of the roller is fixedly connected to an outer shaft head installed in the hanging plate bearing, the inner end of the roller is fixedly connected to the output end of the gear transmission box, and a rotary tiller blade is fixedly installed on the outer wall of the roller.
[0006] Through this solution, the rotary tiller replaces the horizontal axis with a hollow roller, which increases the effective diameter while reducing its own weight, and the rotary tillage depth is large.
[0007] Preferably, the hanging plate and the side plate are arranged parallel to each other, and the upper end of the hanging plate has a hanging plate folding edge bent outwardly into a right angle, and the hanging plate folding edge is fixedly connected to the upper side of the side plate folding edge by bolts.
[0008] Through this solution, the position of the hanging plate is retracted inward, which can prevent the hanging plate from scratching the soil during rotary tillage operation. Preferably, a plurality of cutter discs are arranged on the outer wall of the roller at fixed intervals, and the cutter disc is annular with an inner ring diameter adapted to the outer diameter of the roller. A plurality of rotary tillage blade seats are evenly distributed on the outer circumference of the cutter disc, and the rotary tillage blades are installed in the rotary tillage blade seats by bolts.
[0009] Through this solution, the length of the rotary tiller blade can be reduced and the torque acting on the blade head can be reduced.
[0010] Preferably, the outermost cutter disc on the roller is equipped with both an outwardly inclined cutter head with a cutter head inclined outwardly and an inwardly inclined cutter head with a cutter head inclined inwardly, and the movement trajectory of the outwardly inclined cutter head when rotating around the axis of the roller covers the folded edge of the hanging plate.
[0011] Through this solution, the coverage of rotary tillage operations can be expanded and blind spots in operations can be reduced as much as possible.
[0012] Due to the adoption of the above structure, the deep tillage rotary tiller described in the utility model has a large tillage depth, a small operating dead angle, a light overall weight, and a high structural strength. It can ensure a large operating depth while expanding the coverage area of the rotary tillage blade, which is beneficial to improving the efficiency of the rotary tillage operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.
[0014] Figure 2 It is a schematic diagram of the structure of the side panels and the hanging panels.
[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the roller.
[0016] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the knife disc and the rotary tiller. DETAILED DESCRIPTION
[0017] The present invention is further described in detail below in conjunction with the accompanying drawings. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions away from the geometric center of a specific component.
[0018] like Figure 1 As shown, the deep tillage rotary tiller described in the utility model includes a frame composed of a crossbeam 1 and a longitudinal beam 11 fixedly connected to both ends of the crossbeam 1. A suspension frame is provided at the front end of the frame, and the frame can be installed on the lifter of the tractor through the suspension frame. A gear transmission box 2 is fixedly installed in the frame. The gear transmission box 2 is longitudinally arranged, and its input shaft is located at the upper end and is connected to the rear power output shaft of the tractor through a coupling. The output shaft of the gear transmission box 2 is located at the lower end, and two output shafts are symmetrically arranged on both sides of the lower end of the gear transmission box 2; the lower end of the longitudinal beam 11 is fixedly connected to the side plate 3, and the side plate 3 is a longitudinally arranged flat plate, and its lower end has a side plate folded edge 31 bent inwardly into a right angle. The side plate folded edge 31 is fixedly connected to a hanging plate 4 by bolts, and the hanging plate 4 is a longitudinally arranged flat plate. The hanging plate 4 and the side plate 3 are arranged parallel to each other. As shown Figure 2 As shown, the upper end of the hanging plate 4 has a hanging plate folding edge 43 bent outward into a right angle, and the hanging plate folding edge 43 is fixedly connected to the upper side of the side plate folding edge 31 by bolts. A hanging plate bearing 41 is embedded on the hanging plate 4, and a roller 5 is installed between the hanging plate bearing 41 and the output end of the gear transmission box 2. A roller 5 is installed at each output end on both sides of the gear transmission box 2. The roller 5 is a hollow cylindrical structure with end covers at both ends. The outer end of the roller 5 is fixedly connected to an outer shaft head 42 installed in the hanging plate bearing 41. The outer shaft head 42 is concentrically arranged with the roller 5. The inner end of the roller 5 is fixedly connected to the output end of the gear transmission box 2, and can be connected by a coupling, or as shown in FIG. Figure 3As shown, a sleeve 55 coaxially arranged with the roller 5 is fixedly connected to the inner side end of the roller 5, and the output shaft of the output end of the transmission box 2 is installed in the sleeve 55 and fixedly connected with a pin. When the transmission box 2 is working, the roller 5 is driven to rotate through the sleeve 55. A rotary tiller is fixedly installed on the outer wall of the roller 5. The rotary tiller can be directly welded to the outer wall of the roller 5, or a blade holder can be welded to the outer wall of the roller 5, and the rotary tiller is installed on the blade holder by a detachable bolt. However, the above two installation methods require the rotary tiller to have a longer handle and have a higher strength requirement for the handle. If the handle is not strong enough, it is easy to break from the handle during operation.
[0019] like Figure 3 , Figure 4 As shown, in one embodiment of the utility model, a plurality of cutter discs 51 are fixedly arranged on the outer wall of the roller 5 at intervals, and the cutter disc 51 is a circular disc body whose inner ring diameter is adapted to the outer diameter of the roller 5. A plurality of rotary tilling blade seats 52 are evenly distributed on the outer circumference of the cutter disc 51, and the rotary tilling blades are installed in the rotary tilling blade seats 52 by bolts. The rotary tilling blades are connected to the roller 5 through the rotary tilling blade seats 52 and the cutter disc 51, and the blade heads of these rotary tilling blades are bent at a certain angle toward the inside or outside. When the roller 5 rotates under the drive of the gear transmission box 2, the plurality of rotary tilling blades contact the ground in turn, and shovel up the soil on the ground and throw it to the side and rear, so as to realize rotary tilling operation. When the diameter of the roller 5 remains unchanged, the rotary tiller blade head is further away from the central axis of the roller 5, so a deeper rotary tillage depth can be obtained. In addition, the strength of the circular ring structure of the cutter disc 51 is much greater than the handle of the rotary tiller of the same thickness. Using the cutter disc 51 to connect the roller 5 can reduce the length of the rotary tiller blade handle and reduce the risk of the handle breaking.
[0020] As a further improvement of the utility model, the outermost cutter disc 51 on the roller 5 is simultaneously equipped with an outward-inclined cutter head 53 with a cutter head inclined outward and an inward-inclined cutter head 54 with a cutter head inclined inward, and the movement trajectory of the outward-inclined cutter head 53 when rotating around the axis of the roller 5 covers the hanging plate folding edge 43. During rotary tillage, the outward-inclined cutter head 53 can act on the ground directly below the hanging plate folding edge 43, reducing the operation blind area and improving the operation efficiency. Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A deep tillage rotary tiller, comprising a frame consisting of a crossbeam (1) and longitudinal beams (11) fixedly connected to both ends of the crossbeam (1), a gear transmission box (2) fixedly mounted in the frame, and a side plate (3) fixedly connected to the lower end of the longitudinal beam (11), characterized in that: The lower end of the side plate (3) has a side plate folded edge (31) bent inwardly to form a right angle, the side plate folded edge (31) is fixedly connected to a hanging plate (4) by means of bolts, a hanging plate bearing (41) is embedded in the hanging plate (4), a roller (5) is installed between the hanging plate bearing (41) and the output end of the gear transmission box (2), the outer end of the roller (5) is fixedly connected to an outer shaft head (42) installed in the hanging plate bearing (41), the inner end of the roller (5) is fixedly connected to the output end of the gear transmission box (2), and a rotary tiller is fixedly installed on the outer wall of the roller (5); the hanging plate (4) and the side plate (3) are arranged parallel to each other, and the upper end of the hanging plate (4) has a hanging plate folded edge bent outwardly to form a right angle (43), the hanging plate folded edge (43) is fixedly connected to the upper side of the side plate folded edge (31) by means of bolts; a plurality of cutter discs (51) are fixedly arranged at intervals on the outer wall of the roller (5); the cutter disc (51) is in the shape of a ring with an inner ring diameter adapted to the outer diameter of the roller (5); a plurality of rotary tiller blade seats (52) are evenly distributed on the outer circumferential surface of the cutter disc (51); the rotary tiller blades are installed in the rotary tiller blade seats (52) by means of bolts; an outwardly inclined cutter head (53) with a cutter head inclined outwardly and an inwardly inclined cutter head (54) with a cutter head inclined inwardly are installed on the outermost cutter disc (51) on the roller (5); the movement trajectory of the outwardly inclined cutter head (53) when rotating around the axis of the roller (5) covers the hanging plate folded edge (43).