Rotary blade convenient to disassemble and assemble

Abstract

The utility model discloses a rotary blade convenient to disassemble and assemble, which comprises a rotary blade main body, the rotary blade main body comprises a driving shaft, the driving shaft is fixedly connected with pairwise symmetrical protection plates, the driving shaft between the two protection plates is provided with a blade holder, and the blade holder is fixedly connected with a blade; a first clamping groove and a second clamping groove are formed in the driving shaft, the first clamping groove is connected with a first clamping block in a clamped mode, the second clamping groove is connected with a limiting insertion block in a clamped mode, and the limiting insertion block is connected with the tool apron in a sliding mode. A pull rod is fixedly connected to the end, located in the tool apron, of the limiting insertion block and slidably connected with the tool apron, and a reset spring is fixedly connected between the end, away from the second clamping groove, of the limiting insertion block and the interior of the tool apron. Through the cooperation of the clamping connection and the screws, the use of the screws is further reduced, and due to the clamping installation, the stability is ensured, the installation is simplified, and the time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tillage blades, in particular to a rotary tillage blade which is easy to assemble and disassemble. Background Art

[0002] Before cultivating the farmland, a rotary tiller is generally used to till the farmland. The rotary tiller uses a rotating rotary tiller to cut or break up soil clods, thereby making the land loose and suitable for cultivation. The blade of the current rotary tiller is easily broken during normal use, resulting in damage to the rotary tiller.

[0003] Publication No. CN218977209U discloses a rotary tiller blade that is easy to replace the blade, including a mounting blade holder and a rotary tiller blade, both sides of the mounting blade holder are provided with L-shaped mounting grooves that match the rotary tiller blade, and both ends of one side of the mounting groove are provided with positioning grooves that penetrate the rotary tiller blade, and a positioning column is slidably connected in the positioning groove; this rotary tiller blade that is easy to replace the blade, when the rotary tiller blade needs to be replaced, the limit nut is unscrewed, and then the positioning plate, the positioning column and the limit screw are removed to remove the rotary tiller blade, and then the new rotary tiller blade is placed in the mounting groove, and the positioning column is inserted into the positioning groove, and the limit screw is inserted into the limit groove at the same time, and then the limit nut is tightened, so that the rotary tiller blade can be replaced. The above structure makes it only necessary to screw the two limit nuts to replace the two rotary tiller blades, and the replacement process is simpler and more convenient, but the patent still has the following problems in actual use:

[0004] The above device still uses a screw structure as the main fixing method for installing the rotary tiller blade. Although the number of screws used is reduced from three to two, for a rotary tiller with a large number of blades, disassembly is also cumbersome, and the screws bear the torque when the rotary tiller blade rotates. Too many screws will increase the risk of thread slippage.

[0005] A rotary tiller blade that is easy to disassemble and assemble is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a rotary tiller that is easy to disassemble and assemble, so as to solve the problem that the screw structure proposed in the above background technology is used as the main fixing method for the rotation of the rotary tiller blade. Although the number of screws used is reduced from three to two, for a rotary tiller with a large number of blades, disassembly tends to be cumbersome.

[0007] To achieve the above object, the utility model provides the following technical solutions: a rotary tiller blade that is easy to disassemble and assemble, comprising a rotary cutter body, the rotary cutter body comprising a driving shaft, two symmetrical protective plates are fixedly connected to the driving shaft, a blade holder is installed on the driving shaft between the two protective plates, and a blade is fixedly connected to the blade holder;

[0008] The driving shaft is provided with a first card slot and a second card slot, the first card slot is engaged with a first card block, the second card slot is engaged with a limited position plug block, and the limited position plug block is slidably connected to the knife seat;

[0009] Wherein, the second slot is plugged with a limit block, and the limit block is slidably connected to the knife seat.

[0010] Preferably, one end of the limiting block located inside the knife seat is fixedly connected to a pull rod, the pull rod is slidably connected to the knife seat, and a return spring is fixedly connected between one end of the limiting block away from the second slot and the inside of the knife seat.

[0011] Preferably, a sliding cavity slidably connected to a pull rod is provided inside the knife seat, the pull rod is configured to be L-shaped, and the other end of the pull rod extends out of the knife seat and is fixedly connected to a pull plate.

[0012] Preferably, the outer sleeve of the pull plate is provided with a protective sleeve fixedly connected to the knife seat, and the outer thread of the protective sleeve is connected with a protective cap.

[0013] Preferably, a side of the knife seat away from the pull rod is symmetrically provided with an inwardly sunken groove, a plurality of micro springs are fixedly connected inside the inwardly sunken groove, and the micro springs are fixedly connected to a limiting plate.

[0014] Preferably, the protection plate is provided with a limiting groove, the limiting plate is snap-connected with the limiting groove, and the limiting plate is slidably connected with the inner wall of the sunken groove.

[0015] Preferably, the knife seat and the protection plate are both provided with through screw holes, and the through screw holes are threadedly connected with screws.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the rotary tiller blade that is easy to disassemble and assemble further reduces the use of screws through the cooperation of the snap-fit ​​connection and the screws, and the snap-fit ​​installation simplifies the installation and saves time while ensuring stability. The specific contents are as follows:

[0017] 1. The knife holder is fixed at four fixed points, namely, the first card slot and the first card block, the second card slot and the limiting plug, the limiting plate and the limiting slot, and the screw and the through screw hole, to prevent the knife holder from being fixed at a single point, which may cause the blade to become unstable or break if it becomes loose. Only one screw is used, and the rest are fixed by snap-fitting, which simplifies the installation of the knife holder and saves time. In addition, the force on the screws in this device is reduced, thereby reducing the risk of deformation or thread slippage caused by long-term resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-section structure of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of region A in the middle;

[0021] Figure 4 Schematic diagram of the internal structure of the sunken groove;

[0022] Figure 5 It is a schematic diagram of the structure of the utility model from top view.

[0023] In the figure: 1. rotary cutter body; 101. drive shaft; 102. protection plate; 103. blade; 104. cutter seat; 2. first slot; 3. second slot; 4. first block; 5. limit plug; 6. pull rod; 7. reset spring; 8. sliding cavity; 9. pull plate; 10. protective cover; 11. protection cap; 12. through screw hole; 13. screw; 14. recessed groove; 15. micro spring; 16. limit plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a technical solution: a rotary tiller blade that is easy to disassemble and assemble, comprising a rotary blade body 1, the rotary blade body 1 comprising a driving shaft 101, and two symmetrical protective plates 102 are fixedly connected to the driving shaft 101, and a blade holder 104 is installed on the driving shaft 101 between the two protective plates 102, and a blade 103 is fixedly connected to the blade holder 104;

[0026] The driving shaft 101 is provided with a first slot 2 and a second slot 3. The first slot 2 is engaged with a first block 4. The second slot 3 is engaged with a limit block 5. The limit block 5 is slidably connected to the knife seat 104.

[0027] The second slot 3 is plugged with a limit block 5 , and the limit block 5 is slidably connected to the knife seat 104 .

[0028] One end of the limit block 5 located inside the knife seat 104 is fixedly connected to a pull rod 6, and the pull rod 6 is slidably connected to the knife seat 104. A return spring 7 is fixedly connected between the end of the limit block 5 away from the second slot 3 and the inside of the knife seat 104; the return spring 7 can ensure that when the pull rod 6 is not pulled, the limit block 5 will extend, thereby allowing the limit block 5 to engage with the second slot 3.

[0029] A sliding cavity 8 is provided inside the tool holder 104 which is slidably connected to the pull rod 6. The pull rod 6 is set to be L-shaped. The other end of the pull rod 6 extends out of the tool holder 104 and is fixedly connected to a pull plate 9. The outer sleeve of the pull plate 9 is provided with a protective sleeve 10 which is fixedly connected to the tool holder 104. The outer thread of the protective sleeve 10 is connected to a protective cap 11. The protective cap 11 can prevent mud from entering the sliding cavity 8, which would make the tool holder 104 unable to be disassembled.

[0030] A recessed groove 14 is symmetrically provided on one side of the tool holder 104 away from the pull rod 6, and a plurality of micro springs 15 are fixedly connected inside the recessed groove 14, and the micro spring 15 is fixedly connected to a limiting plate 16; a limiting groove is provided on the protection plate 102, and the limiting plate 16 is clamped and connected with the limiting groove, and the limiting plate 16 is slidingly connected to the inner wall of the recessed groove 14; the limiting plate 16 and the recessed groove 14 can share the torque of the drive shaft 101 when the tool holder 104 is subjected to reverse force, thereby reducing the force between the first clamping groove 2 and the second clamping groove 3, and the first clamping block 4 and the limiting plug block 5, to prevent the parts from being deformed due to long-term exposure to large forces.

[0031] The knife seat 104 and the protection plate 102 are both provided with through screw holes 12 , and the through screw holes 12 are threadedly connected with screws 13 ; the screws 13 and the through screw holes 12 can increase the stability of the connection between the knife seat 104 and the driving shaft 101 .

[0032] Working principle: Before using this easy-to-disassemble rotary tiller, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 5 As shown, when the blade 103 needs to be removed, the protective cap 11 is first rotated to remove it from the protective cover 10, and then the screw 13 is removed from the through screw hole 12, and then the limiting plate 16 is squeezed to separate it from the protective plate 102 and embed it into the recessed groove 14.

[0033] Finally, pull the pull plate 9 to make the pull rod 6 slide in the sliding cavity 8, so that the pull rod 6 pulls the limiting plug 5 out of the second slot 3. At this time, the knife seat 104 can be lifted and removed together with the blade 103.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary tiller blade that is easy to assemble and disassemble, comprising a rotary cutter body (1), the rotary cutter body (1) comprising a drive shaft (101), two symmetrical protective plates (102) being fixedly connected to the drive shaft (101), a blade holder (104) being mounted on the drive shaft (101) between the two protective plates (102), and a blade (103) being fixedly connected to the blade holder (104); It is characterized in that Also includes: The driving shaft (101) is provided with a first clamping slot (2) and a second clamping slot (3); the first clamping slot (2) is clamped and connected to a first clamping block (4); the second clamping slot (3) is clamped and connected to a limit block (5); the limit block (5) is slidably connected to the knife seat (104); Wherein, the second slot (3) is plugged with a limit block (5), and the limit block (5) is slidably connected to the knife seat (104).

2. The easily disassembled rotary tiller according to claim 1, characterized in that: One end of the limit block (5) located inside the knife seat (104) is fixedly connected to a pull rod (6), and the pull rod (6) is slidably connected to the knife seat (104). A return spring (7) is fixedly connected between the end of the limit block (5) away from the second slot (3) and the inside of the knife seat (104).

3. The easily disassembled rotary tiller according to claim 1, characterized in that: A sliding cavity (8) is provided inside the knife seat (104) and is slidably connected to the pull rod (6). The pull rod (6) is configured to be L-shaped. The other end of the pull rod (6) extends out of the knife seat (104) and is fixedly connected to a pull plate (9).

4. The easily disassembled rotary tiller according to claim 3, characterized in that: The outer sleeve of the pulling plate (9) is provided with a protective sleeve (10) fixedly connected to the knife seat (104), and the outer thread of the protective sleeve (10) is connected to a protective cap (11).

5. The easily disassembled rotary tiller according to claim 1, characterized in that: A side of the knife seat (104) away from the pull rod (6) is symmetrically provided with an inwardly sunken groove (14), a plurality of micro springs (15) are fixedly connected inside the inwardly sunken groove (14), and the micro springs (15) are fixedly connected to a limiting plate (16).

6. The easily disassembled rotary tiller according to claim 5, characterized in that: The protection plate (102) is provided with a limiting groove, the limiting plate (16) is connected to the limiting groove, and the limiting plate (16) is slidably connected to the inner wall of the sunken groove (14).

7. The easily disassembled rotary tiller according to claim 1, characterized in that: The knife seat (104) and the protection plate (102) are both provided with a through screw hole (12), and the through screw hole (12) is threadedly connected with a screw (13).

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