Rotary tillage shaft of rotary cultivator with adjustable tillage distance

Abstract

The utility model relates to the technical field of rotary cultivators, in particular to a rotary tillage shaft of a rotary cultivator with adjustable tillage distance, which comprises an inner shaft, a sleeve, a lantern ring, a fixed block, a clamping groove, a mounting frame, a first spring, a rotary blade, a spiral groove, a first threaded rod and a first locking bolt. The first spring is arranged between the mounting frame and the clamping groove, the spiral grooves are formed in the rotary blade at equal intervals, firstly, the rotary blade is mounted in the mounting frame, force is applied to the mounting frame, the first spring is compressed, and the length, outside the clamping groove, of the rotary blade is adjusted according to the actual soil layer thickness; then the first threaded rod is connected into the corresponding spiral groove, the first threaded rod is locked and fixed through the first locking bolt, the length of the rotary blade outside the clamping groove is adjusted, the requirements for soil crushing of different thicknesses are met, the flexibility of the rotary blade is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tillers, in particular to a rotary tiller shaft with adjustable tillage distance. Background Art

[0002] A rotary tiller is a tilling machine used in conjunction with a tractor to perform plowing and harrowing operations. It is widely used due to its strong soil-breaking ability and smooth surface after plowing. It also breaks up subsurface root stubble, facilitating seed drill operation and providing a good seedbed for later sowing. Proper use and adjustment of a rotary tiller are crucial to maintaining its optimal technical condition and ensuring tillage quality. Rotary tillers break up the plow base, restore the soil's structure, improve soil moisture retention, eliminate some weeds, reduce pests and diseases, level the ground, and improve the standard of agricultural mechanization. However, common rotary tillers currently on the market suffer from a lack of adjustable blade length, limiting the ability to break up soil layers of the same thickness at a time. This inability to meet the demands of varying soil thicknesses results in limited flexibility, impacting operational efficiency. Utility Model Content

[0003] The purpose of the present utility model is to provide a rotary tiller shaft with adjustable tillage distance, which solves the problems raised in the above-mentioned background technology by arranging a fixing block, a slot, a mounting frame, a first spring, a rotary tiller blade, a spiral groove, a first threaded rod and a first locking bolt.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary tiller shaft of a rotary tiller with adjustable tillage distance, comprising an inner shaft, a sleeve sleeved on the outer wall of the inner shaft, a collar fixed on the sleeve, a plurality of fixing blocks provided on the collar, a slot provided in the fixing block, a mounting frame provided in the slot, a first spring provided between the mounting frame and the inner wall of the slot, a rotary tiller blade provided on a surface of the mounting frame away from the first spring, a plurality of equidistant spiral grooves provided on the rotary tiller blade, a first threaded rod provided in the spiral groove, one end of the first threaded rod extending out of the fixing block, and a first locking bolt sleeved on the outer wall of the fixing block extending out of the one end of the first threaded rod.

[0005] As a preferred solution, a plurality of equidistant through holes are provided on the inner shaft.

[0006] As a preferred solution, a threaded hole is provided on the sleeve, a threaded rod is provided in the threaded hole, one end of the threaded rod extends into the through hole on the inner shaft, and a locking bolt is provided on the other end.

[0007] As a preferred solution, clamping blocks are provided on the left and right inner walls of the installation frame.

[0008] As a preferred solution, a second spring is provided between the clamping block and the inner wall of the installation frame.

[0009] As a preferred solution, mounting shafts are provided at both ends of the inner shaft.

[0010] As a preferred solution, a connecting pin is provided on the installation shaft, and the lower end of the connecting pin passes through the installation shaft.

[0011] It can be seen from the technical solution provided by the above utility model that the utility model provides a rotary tiller shaft with adjustable tillage distance, which has the following beneficial effects:

[0012] 1. The utility model provides a first spring between the mounting frame and the slot, and provides a plurality of equidistant spiral grooves on the rotary tiller. First, the rotary tiller is installed in the mounting frame, and force is applied to the mounting frame to compress the first spring. The length of the rotary tiller outside the slot is adjusted according to the actual soil thickness. Then, the first threaded rod is connected to the corresponding spiral groove, and the first threaded rod is locked and fixed with a first locking bolt. By adjusting the length of the rotary tiller outside the slot, the requirements for crushing soil of different thicknesses are met, thereby improving the flexibility of the rotary tiller and enhancing work efficiency.

[0013] 2. The connection between the rotary tiller and the mounting frame is set to be detachable. When the rotary tiller needs to be installed, the clamping block is moved to compress the second spring, and the rotary tiller is clamped between the two clamping blocks in the mounting frame. Then the clamping block is loosened, and the second spring is reset to clamp the rotary tiller. Then, the rotary tiller is fixed with the action of the first threaded rod and the first locking bolt. When disassembling the rotary tiller, the first locking bolt is first loosened to separate the first threaded rod from the rotary tiller and the connecting block. Then, the clamping block is moved to compress the second spring to remove the rotary tiller from the mounting frame. The operation is simple, and disassembly and installation are easy, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a rotary tiller shaft with adjustable tillage distance according to the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the inner shaft and sleeve of a rotary tiller with adjustable tillage distance according to the utility model;

[0016] Figure 3 This is a schematic diagram of the connection between the rotary tillage shaft fixing block and the rotary tillage blade of a rotary tiller with adjustable tillage distance according to the present invention;

[0017] Figure 4 This is an enlarged structural diagram of the rotary tillage shaft A of a rotary tiller with adjustable tillage distance according to the present invention.

[0018] In the figure: 1. inner shaft; 2. sleeve; 3. collar; 4. fixing block; 5. rotary tiller; 6. mounting shaft; 11. through hole; 12. limit block; 21. threaded hole; 22. threaded rod; 23. locking bolt; 41. slot; 42. mounting frame; 43. first spring; 44. first threaded rod; 45. first locking bolt; 46. clamping block; 47. second spring; 51. spiral groove; 61. connecting pin. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, features identified with "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] like Figure 1-4As shown, an embodiment of the utility model provides a rotary tiller shaft of an adjustable tillage distance, wherein a sleeve 2 is sleeved on the outer wall of the inner shaft 1, a ring 3 is fixed on the sleeve 2, a plurality of fixing blocks 4 are provided on the ring 3, a slot 41 is provided in the fixing block 4, a mounting frame 42 is provided in the slot 41, a first spring 43 is provided between the mounting frame 42 and the inner wall of the slot 41, a rotary tiller 5 is provided on the side of the mounting frame 42 away from the first spring 43, a plurality of equidistant spiral grooves 51 are provided on the rotary tiller 5, a first threaded rod 44 is provided in the spiral groove 51, one end of the first threaded rod 44 extends out of the fixing block 4, and one end of the first threaded rod extends out of the outer wall of the fixing block 4 and is sleeved with a first locking bolt 45.

[0025] Among them, a fixing block 4 is provided on the collar 3, a slot 41 is provided in the fixing block 4, a mounting frame 42 is provided in the slot 41, a first spring 43 is provided between the mounting frame 42 and the inner wall of the slot 41, a rotary blade 5 is provided on the side of the mounting frame 42 away from the first spring 43, a plurality of equidistant spiral grooves 51 are provided on the rotary blade 5, a first threaded rod 44 is provided in the spiral groove 51, one end of the first threaded rod 44 extends out of the fixing block 4, and one end of the first threaded rod 44 extends out of the fixing block 4 A first locking bolt 45 is sleeved on the outer wall. First, the rotary tiller 5 is installed in the installation frame 42, and force is applied to the installation frame 42 to compress the first spring 43. The length of the rotary tiller 5 outside the slot 41 is adjusted according to the actual soil thickness. Then, the first threaded rod 44 is connected to the corresponding spiral groove 51, and the first threaded rod 44 is locked and fixed with the first locking bolt 45. By adjusting the length of the rotary tiller 5 outside the slot 41, the requirements for crushing soil of different thicknesses can be met, the flexibility of the rotary tiller 5 is improved, and the work efficiency is improved.

[0026] like Figure 2 As shown, the inner shaft 1 is provided with a plurality of equidistant through holes 11 .

[0027] Among them, a plurality of equidistant through holes 11 are provided on the inner shaft 1. The tilling distance is adjusted according to the required length of the rotary tiller shaft. The length of the inner shaft 1 in the sleeve 2 is adjusted to adjust the length of the rotary tiller shaft and the distance between adjacent rotary tillers, thereby improving the adaptability of the rotary tiller shaft.

[0028] like Figure 1-2 As shown, a threaded hole 21 is provided on the sleeve 2, a threaded rod 22 is provided in the threaded hole 21, one end of the threaded rod 22 extends into the through hole 11 on the inner shaft 1, and a locking bolt 23 is provided on the other end.

[0029] Among them, a threaded hole 21 is provided on the sleeve 2, and a threaded rod 22 is provided in the threaded hole 21. One end of the threaded rod 22 extends into the through hole 11 on the inner shaft 1, and a locking bolt 23 is provided on the other end. The threaded rod 22 is installed on the threaded hole 21, and then cooperates with the through holes 11 at different positions to adjust the tillage distance, connect the sleeve 2 and the inner shaft 1, and then lock and fix them with the sleeve 2 through the locking bolt 23 to prevent loosening between the inner shaft 1 and the sleeve 2.

[0030] like Figure 4 As shown, clamping blocks 46 are provided on the left and right inner walls of the installation frame 42 .

[0031] Wherein, clamping blocks 46 are provided on the left and right inner walls of the mounting frame 42 , and the clamping blocks 46 can clamp and fix the rotary tiller blade 5 .

[0032] like Figure 4 As shown, a second spring 47 is provided between the clamping block 46 and the inner wall of the mounting frame 42 .

[0033] Among them, a second spring 47 is set between the clamping block 46 and the mounting frame 42. When the rotary tiller 5 needs to be installed, the clamping block 46 is moved to compress the second spring 47, and the rotary tiller 5 is clamped between the two clamping blocks 46 in the mounting frame 42. Then the clamping block 46 is loosened to reset the second spring 47 to clamp the rotary tiller 5, and then the rotary tiller 5 is fixed with the action of the first threaded rod 44 and the first locking bolt 45. When the rotary tiller 5 is disassembled, the first locking bolt 45 is first loosened to separate the first threaded rod 44 from the rotary tiller 5 and the connecting fixed block 4, and then the clamping block 46 is moved to compress the second spring 47 to remove the rotary tiller 5 from the mounting frame. The operation is simple, and the disassembly and installation are convenient, saving time and effort.

[0034] like Figure 1 As shown, mounting shafts 6 are provided at both ends of the inner shaft 1 .

[0035] Among them, mounting shafts 6 are provided at both ends of the inner shaft 1, and the mounting shafts 6 are mounted on the rotary tiller frame to facilitate the connection between the inner shaft 1 and the rotary tiller frame.

[0036] like Figure 1 As shown, a connecting pin 61 is provided on the installation shaft 6 , and the lower end of the connecting pin 61 passes through the installation shaft 6 .

[0037] Among them, a connecting pin 61 is provided on the installation shaft 6 and passes through the installation shaft 6, which facilitates fixing the installation shaft 6 on the rotary tiller frame.

[0038] The working principle of this embodiment is as follows: First, install the rotary tiller 5 in the mounting frame 42. Then, move the clamping block 46 to compress the second spring 47, clamping the rotary tiller 5 between the two clamping blocks 46 in the mounting frame 42. Then, release the clamping block 46 to reset the second spring 47, clamping the rotary tiller 5. The length of the rotary tiller 5 outside the clamping slot 41 is adjusted according to the actual soil thickness. Then, the first threaded rod 44 is connected to the corresponding spiral groove 51 and locked with the first locking bolt 45. By adjusting the length of the rotary tiller 5 outside the clamping slot 41, the requirements for crushing soil of different thicknesses are met, improving the flexibility of the rotary tiller 5 and enhancing working efficiency. When the tilling distance needs to be adjusted, the threaded rod 22 is installed in the threaded hole 21 and then engaged with the through hole 11 at different positions to adjust the tilling distance. Then, the sleeve 2 is connected to the inner shaft 1 and then locked with the locking bolt 23 to prevent the inner shaft 1 and sleeve 2 from loosening.

[0039] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary tiller shaft with adjustable tillage distance, comprising an inner shaft (1), characterized in that: A sleeve (2) is sleeved on the outer wall of the inner shaft (1), a collar (3) is fixed on the sleeve (2), a plurality of fixed blocks (4) are provided on the collar (3), a slot (41) is provided in the fixed block (4), a mounting frame (42) is provided in the slot (41), a first spring (43) is provided between the mounting frame (42) and the inner wall of the slot (41), a rotary tiller (5) is provided on a side of the mounting frame (42) away from the first spring (43), a plurality of equidistant spiral grooves (51) are provided on the rotary tiller (5), a first threaded rod (44) is provided in the spiral groove (51), one end of the first threaded rod (44) extends outside the fixed block (4), and a first locking bolt (45) is sleeved on the outer wall of the fixed block (4) where one end of the first threaded rod (44) extends outside.

2. The rotary tiller shaft with adjustable tillage distance according to claim 1, characterized in that: The inner shaft (1) is provided with a plurality of equidistant through holes (11).

3. The rotary tiller shaft with adjustable tillage distance according to claim 2, characterized in that: The sleeve (2) is provided with a threaded hole (21), a threaded rod (22) is provided in the threaded hole (21), one end of the threaded rod (22) extends into the through hole (11) on the inner shaft (1), and the other end is provided with a locking bolt (23).

4. The rotary tiller shaft of the rotary tiller with adjustable tillage distance according to claim 3, characterized in that: Clamping blocks (46) are provided on the left and right inner walls of the installation frame (42).

5. The rotary tiller shaft of the rotary tiller with adjustable tillage distance according to claim 4, characterized in that: A second spring (47) is provided between the clamping block (46) and the inner wall of the mounting frame (42).

6. The rotary tiller shaft of the rotary tiller with adjustable tillage distance according to claim 5, characterized in that: Mounting shafts (6) are provided at both ends of the inner shaft (1).

7. The rotary tiller shaft of the rotary tiller with adjustable tillage distance according to claim 6, characterized in that: A connecting pin (61) is provided on the installation shaft (6), and the lower end of the connecting pin (61) passes through the installation shaft (6).

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