Cutter shaft and flange integrated structure for rotary cultivator

Abstract

The cutter shaft and flange integrated structure for the rotary cultivator comprises a main shaft, flanges are fixed to the two ends of the main shaft, a plurality of reclamation mechanisms with adjustable intervals are installed on the main shaft, a plurality of first screw holes are formed in the periphery of each flange, and a plurality of first reclamation cutters distributed in a spiral shape are connected to the peripheries of the flanges through matching of bolts and the first screw holes; the reclamation mechanism comprises a sleeve, annular side plates fixed to the two ends of the sleeve, a lead screw rotationally connected to the two side plates through rotating bearings and a guide rod fixedly connected to the two side plates, the lead screw and the guide rod are oppositely arranged, the lead screw is in threaded connection with a cutter head, one end of the cutter head is in sliding connection with the guide rod, and the cutter head movably sleeves the sleeve; a plurality of second screw holes are formed in the periphery of the cutter head, and a plurality of spirally distributed second reclamation cutters are connected to the periphery of the cutter head through the matching of bolts and the second screw holes. And the second reclamation cutter in the main shaft and the first reclamation cutter on the flange work simultaneously, so that the reclamation range is widened.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, specifically to an integrated structure of the blade shaft and flange for a rotary tiller. Background Technology

[0002] Rotary tillers use the power output from a tractor to drive the cutter shaft to rotate. The blades cut into the soil tangentially, breaking up soil clods and throwing them backward, while simultaneously covering the surface with weeds or stubble, thus achieving integrated tillage, soil breaking, and leveling.

[0003] The main problems with current rotary tillers are as follows: (1) Flanges are installed at both ends of the main shaft. The flanges are used to connect to the shaft head, which is connected to the gear transmission mechanism. The main shaft is driven to rotate through the gear transmission mechanism. However, no cutter discs or tillage blades are installed at the flanges, i.e., at both ends of the main shaft. Therefore, it is impossible to till the two sides of the main shaft, resulting in a small tillage range. Moreover, weeds on the edge of the field will spread into the field during the tillage process, making it difficult to remove the weeds on the edge of the field at the same time. (2) During rotary tillage, if the spacing is too small, weeds or stubble may get stuck between the blades, affecting the operation of the machine. If the resistance of clay or compacted soil is high, if the blade spacing is too small, it will easily lead to the accumulation of clay and increase the load. In addition, a larger spacing is required for deep tillage to reduce resistance and ensure deep tillage depth. A smaller spacing is required for shallow tillage (such as seedbed preparation) to improve the fineness of the surface soil. However, the current cutter discs are fixed on the main shaft, and the position of any cutter disc cannot be adjusted, so the spacing between the cutter discs cannot be adjusted. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated structure of the cutter shaft and flange for rotary tillers, thereby solving the problems of small tillage range and non-adjustable cutter head position mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A rotary tiller with an integrated blade shaft and flange structure includes a main shaft, flanges fixed at both ends of the main shaft, and several adjustable-space tillage mechanisms mounted on the main shaft. Several first threaded holes are formed on the outer periphery of the flanges, and multiple spirally distributed first tillage blades are connected to them via bolts and the first threaded holes. The tillage mechanism includes a sleeve, annular side plates fixed to both ends of the sleeve, a lead screw rotatably connected to the side plates via a rotary bearing, and guide rods fixedly connected to the side plates. The lead screw and guide rods are arranged opposite each other, and a cutter disc is threaded onto the lead screw. One end of the cutter disc is slidably connected to the guide rod, and the cutter disc is movably sleeved on the sleeve. Several second threaded holes are formed on the outer periphery of the cutter disc, and multiple spirally distributed second tillage blades are connected to them via bolts and the second threaded holes.

[0007] Preferably, the outer wall of the sleeve is connected to a plurality of slide bars, and the inner wall of the cutter head is provided with a slide groove that matches the slide bars. The cutter head is slidably connected to the sleeve through the cooperation of the slide bars and the slide groove.

[0008] With the above technical solution, since the cutter head is connected to the lead screw and guide rod and is supported by only two rod-like objects, and the cutter head is slidably connected to the slide bar of the sleeve through the slide groove, the stability of the cutter head is increased.

[0009] Preferably, the flange is connected to a plurality of reinforcing ribs distributed in a circular pattern, and one side of the reinforcing ribs is fixedly connected to the outer wall of the end of the main shaft.

[0010] The above technical solution, through the addition of reinforcing ribs, can improve the stability of the connection between the flange and the main shaft.

[0011] Preferably, one end of the lead screw is connected to a handle.

[0012] Using the above technical solution, turning the handle can drive the lead screw to rotate.

[0013] Preferably, both ends of the flange are bolted to shaft heads.

[0014] With the above technical solution, the shaft head is bolted to the flange, and the shaft head is connected to the gear transmission mechanism, which can drive the shaft head to rotate together with the main shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The flange is fixed on the main shaft, and the first tillage knife is installed on the flange. That is, during tillage, the second tillage knife in the main shaft and the first tillage knife on the flange work simultaneously, which increases the tillage range. Moreover, the first tillage knife can push the weeds at both ends of the main shaft outward to prevent the weeds from concentrating inward.

[0017] (2) By rotating the lead screw, the cutter head can be driven to slide on the sleeve, thereby adjusting the position of the cutter head and adjusting the distance between the cutter heads to adapt to different rotary tillage environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention;

[0019] Figure 2 This is a partial schematic diagram of the present invention;

[0020] In the diagram: 1-spindle, 2-flange, 3-first reclaiming cutter, 4-sleeve, 5-side plate, 6-lead screw, 7-guide rod, 8-cutter head, 9-second reclaiming cutter, 10-slide bar, 11-reinforcing rib, 12-handle, 13-shaft head. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figures 1-2 A rotary tiller with an integrated blade shaft and flange structure includes a main shaft 1, with flanges 2 fixed to both ends of the main shaft 1. Several first threaded holes are formed on the outer periphery of the flanges 2, and multiple spirally distributed first tilling blades 3 are connected to them via bolts and the first threaded holes. By integrating the flanges 2 with the cutter head, i.e., connecting the first tilling blades 3 to the flanges 2, the soil at both ends of the main shaft 1 can be tilled, while simultaneously pushing weeds outwards. Both ends of the flanges 2 are bolted to shaft heads 13, which are used to connect to a gear transmission mechanism (not shown in the attached diagram). The gear transmission mechanism drives the shaft heads to rotate, thereby driving the main shaft to rotate.

[0024] The main shaft 1 is equipped with several adjustable-spaced reclamation mechanisms. Each reclamation mechanism includes a sleeve 4, annular side plates 5 fixed to both ends of the sleeve, a lead screw 6 rotatably connected to the two side plates via a rotary bearing, and a guide rod 7 fixedly connected to the two side plates. The lead screw 6 and the guide rod 7 are arranged opposite to each other. A cutter disc 8 is threadedly connected to the lead screw 6. One end of the cutter disc 8 is slidably connected to the guide rod 7. A handle 12 is connected to one end of the lead screw. By turning the handle, the lead screw can be rotated. The cutter disc 8 is movably sleeved on the sleeve 4. Several second screw holes are provided on the outer periphery of the cutter disc 8, and multiple spirally distributed second reclamation blades 9 are connected to it through the cooperation of bolts and second screw holes.

[0025] The outer wall of the sleeve 4 is connected to multiple sliding strips 10, and the inner wall of the cutter head 8 is provided with sliding grooves that match the sliding strips. The cutter head 8 is slidably connected to the sleeve 4 through the cooperation of the sliding strips and the sliding grooves. Since the cutter head 8 is connected to the lead screw 6 and the guide rod 7 and is supported by only two rod-like objects, and the cutter head 8 is slidably connected to the sliding strips 10 of the sleeve 4 through the sliding grooves, the stability of the cutter head connection is increased.

[0026] The working principle of this embodiment is as follows: When the main shaft 1 rotates, it drives the first tillage blade 3 and the second tillage blade 9 to rotate, increasing the tillage range. Furthermore, the first tillage blade 3 pushes the weeds at both ends of the main shaft 1 outwards, preventing them from concentrating inwards. When the position of the cutter head 8 needs to be adjusted, the handle 12 is rotated, driving the lead screw 6 to rotate, thereby causing the cutter head 8 to slide on the sleeve 4, thus adjusting the position of the cutter head 8 to adjust the spacing between the cutter heads and adapt to different rotary tillage environments.

[0027] For example, if there are too many weeds, the spacing between the cutter heads can be increased to prevent weeds or stubble from getting stuck between the blades and affecting machine operation. If the clay or compacted soil has high resistance, the spacing between the cutter heads can also be increased to prevent clay accumulation and reduce the load. In addition, a larger spacing is needed for deep tillage to reduce resistance and ensure deep tillage depth; a smaller spacing is needed for shallow tillage (such as seedbed preparation) to improve the fineness of the topsoil.

[0028] Example 2

[0029] Based on Embodiment 1, multiple reinforcing ribs 11 arranged in a circular pattern are connected to the flange 2, and one side of each reinforcing rib 11 is fixedly connected to the outer wall of the end of the main shaft 1. The reinforcement ribs improve the stability of the connection between the flange and the main shaft.

[0030] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary tiller with an integrated blade shaft and flange structure, characterized in that: Includes a main shaft (1), with flanges (2) fixed at both ends of the main shaft (1), and several first screw holes are opened on the outer periphery of the flanges (2), and several first reclamation knives (3) distributed in a spiral shape are connected by bolts and the first screw holes. Several reclamation mechanisms with adjustable spacing are installed on the main shaft (1). The reclamation mechanism includes a sleeve (4), side plates (5) fixed at both ends of the sleeve and in an annular shape, a lead screw (6) rotatably connected to the two side plates via a rotary bearing, and a guide rod (7) fixedly connected to the two side plates. The lead screw (6) and the guide rod (7) are arranged opposite to each other. A cutter disc (8) is threadedly connected to the lead screw (6). One end of the cutter disc (8) is slidably connected to the guide rod (7). The cutter disc (8) is movably sleeved on the sleeve (4). The outer periphery of the cutter disc (8) is provided with several second screw holes, and multiple second reclamation knives (9) distributed in a spiral shape are connected by bolts and the cooperation of the second screw holes.

2. The rotary tiller blade shaft and flange integrated structure according to claim 1, characterized in that: The outer wall of the sleeve (4) is connected to a plurality of slide bars (10), and the inner wall of the cutter head (8) is provided with a sliding groove that matches the slide bars. The cutter head (8) is slidably connected to the sleeve (4) through the cooperation of the slide bars and the sliding groove.

3. The rotary tiller blade shaft and flange integrated structure according to claim 2, characterized in that: The flange (2) is connected to a plurality of reinforcing ribs (11) arranged in a circular pattern, and one side of the reinforcing ribs (11) is fixedly connected to the outer wall of the end of the main shaft (1).

4. The integrated structure of the blade shaft and flange for a rotary tiller according to claim 3, characterized in that: One end of the lead screw (6) is connected to a handle (12).

5. The rotary tiller blade shaft and flange integrated structure according to claim 4, characterized in that: Both ends of the flange (2) are bolted to shaft heads (13).

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