Tool bit replacement structure of agricultural rotary cultivator

Abstract

The utility model discloses an agricultural rotary cultivator tool bit replacement structure which comprises a mounting ring, and the top of the mounting ring is fixedly connected with a plurality of mounting seats. Through the cooperation of the mounting seat, the clamping groove, the positioning opening and the positioning pin, the soil turning cutter can be clamped into the mounting seat and is transversely clamped and positioned, and then the fastening pin can be clamped into the fastening groove of the positioning pin through the cooperation of the fastening block, the storage groove, the damping telescopic rod, the fastening pin, the ejection spring and the fastening groove, so that the soil turning cutter can be clamped into the soil turning cutter. According to the soil turning device, the soil turning cutter is vertically clamped and positioned, so that the soil turning cutter cannot move transversely, the cross-shaped clamping and positioning effect can be achieved through transverse and vertical clamping, the soil turning cutter does not need to be disassembled and replaced through an additional tool, and meanwhile when the mounting base drives the soil turning cutter to rotate, the fastening pin can be firmly clamped into the fastening groove through centrifugal force; and therefore, the fixing effect on the soil turning knife can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tiller blades, in particular to a rotary tiller blade replacement structure for agriculture. Background Art

[0002] Rotary tillers are one of the most commonly used agricultural machinery. They are used in conjunction with tractors to complete plowing and harrowing operations. They have the characteristics of strong soil crushing ability and flat surface after plowing, so they are widely used. At the same time, they can cut up the root stubble buried below the surface to facilitate the operation of the seeder, and loosen the soil after the soil is solidified by the crop roots, restore the soil tillage layer structure, and provide a good seed bed for later sowing.

[0003] The main structure of the rotary tiller includes one or more knife shafts, on which rotary tillers are installed. The tractor power output drives the knife shaft to rotate through the transmission structure, and the rotary tiller turns the soil layer to loosen the soil. For example, a double-disc knife seat for a rotary tiller is disclosed in Chinese patent application No. 202322225438.7. The patent discloses that the double-disc knife seat includes a mounting ring, a socket, a tiller and other connecting components, wherein the mounting ring includes a hinged first semicircular ring and a second semicircular ring, and the first semicircular ring and the second semicircular ring are connected by a second bolt to connect a rectangular block, which is convenient for quickly installing and removing a single mounting ring from the transmission rod, and convenient for quickly and efficiently replacing multiple double-disc knife seats of different shapes and sizes, which is convenient for subsequent cleaning and maintenance, and the end of a single tiller is inserted into the socket on the outer wall of the mounting ring, and then threadedly connected by a third bolt, which is convenient for quickly and separately replacing and disassembling and overhauling each tiller connected to the single mounting ring, and the connection method is simple and easy to operate.

[0004] Although the above patent can conveniently and quickly replace and disassemble and repair each tiller connected by a single mounting ring, and the connection method is simple and easy to operate, in actual use, the patent uses bolts to install and position the tiller, so that additional tools are needed to loosen the bolts when it is disassembled and replaced. At the same time, the bolts may be accidentally lost during the replacement of the tiller, resulting in the inability to tighten and position the new tiller subsequently, so that the patent still has certain limitations in actual application.

[0005] Therefore, it is necessary to modify the rotary tiller blade replacement structure in the above-mentioned patent to effectively prevent the problem that additional tools are needed to loosen the bolts when the tiller blade is disassembled and replaced, and that the bolts may be accidentally lost during the replacement of the tiller blade, thereby resulting in the inability to tighten the new tiller blade in place later. Utility Model Content

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a blade replacement structure for an agricultural rotary tiller, which has the advantages of fixing and positioning the tilling blade by means of a cross-interlocking method, and has a good positioning effect and is convenient for staff to use. It solves the problem that additional tools are needed to loosen the bolts when disassembling and replacing the tilling blade, and the bolts may be accidentally lost during the replacement of the tilling blade, thereby resulting in the inability to tighten and position the new tilling blade subsequently.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blade replacement structure for an agricultural rotary tiller, comprising a mounting ring, a plurality of mounting seats fixedly connected to the top of the mounting ring, and the plurality of mounting seats are evenly arranged in a ring shape, a clamping groove is provided on the top of the mounting seat, a tilling knife is clamped inside the clamping groove, positioning grooves are symmetrically provided on both sides of the tilling knife, positioning ports are symmetrically provided on both sides of the mounting seat, and the positioning ports are aligned with the positioning grooves, a positioning pin is slidably connected inside the positioning port, and the positioning pin is clamped with the positioning groove, fastening blocks are symmetrically fixedly connected to the surfaces of both sides of the mounting seat, and the fastening blocks are located between the positioning ports and the mounting ring, a receiving groove is provided on a side of the fastening block close to the positioning pin, a damping telescopic rod is fixedly connected to the bottom of the receiving groove, a fastening pin is fixedly connected to the other end of the damping telescopic rod, an ejection spring is sleeved on the surface of the damping telescopic rod, and the ejection spring is used in conjunction with the fastening pin, a fastening groove is provided on a side of the positioning pin close to the fastening block, and the fastening groove is used in conjunction with the fastening pin.

[0008] As a preferred embodiment of the utility model, the inner wall of the clamping groove is symmetrically fixedly connected with an anti-idiot strip, the surface of the soil-turning knife is symmetrically provided with an anti-idiot groove, and the anti-idiot groove is slidably connected with the anti-idiot strip.

[0009] As a preferred embodiment of the utility model, a limiting groove is provided inside the positioning port, a limiting ring is fixedly connected to the surface of the positioning pin, and the limiting ring is slidably connected to the limiting groove, and an extrusion spring is fixedly connected to the surface of the positioning pin, and the extrusion spring is used in conjunction with the limiting ring.

[0010] As a preferred embodiment of the utility model, sliding grooves are symmetrically provided on both sides of the fastening block, and toggle blocks are symmetrically fixedly connected to both sides of the fastening pin, and the toggle blocks are slidably connected to the sliding grooves.

[0011] As a preferred embodiment of the utility model, a sealing groove is provided at the bottom of the slide groove, a sealing strip is fixedly connected to the surface of the toggle block, and the sealing strip is slidably connected to the sealing groove.

[0012] As a preferred embodiment of the present invention, a magnet is fixedly connected inside the fastening groove, and the magnet is magnetically connected to the fastening pin.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model can clamp the tilling knife into the mounting seat and position it horizontally by means of the cooperation of the mounting seat, the clamping groove, the positioning port and the positioning pin. Then, by means of the cooperation of the fastening block, the storage groove, the damping telescopic rod, the fastening pin, the ejection spring and the fastening groove, the fastening pin can be clamped into the fastening groove of the positioning pin and position it vertically so that it cannot move horizontally. The cross clamping positioning effect can be achieved by means of the horizontal and vertical clamping, and no additional tools are required to disassemble and replace the tilling knife. At the same time, when the mounting seat drives the tilling knife to rotate, the centrifugal force can be used to make the fastening pin firmly clamped into the fastening groove, thereby further improving the fixing effect of the tilling knife.

[0015] 2. The utility model can use a limiting method to avoid errors by setting the anti-fool strip and the anti-fool groove, so that the operator can directly and accurately complete the correct clamping operation without spending attention, experience and professional knowledge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a three-dimensional partial cross-sectional schematic diagram of the mounting seat, the clamping groove and the soil turning knife of the utility model used in combination;

[0018] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0019] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged view at B.

[0020] In the figure: 1. Mounting ring; 2. Mounting seat; 3. Snap-on groove; 4. Soil-turning knife; 5. Positioning groove; 6. Positioning opening; 7. Positioning pin; 8. Fastening block; 9. Storage groove; 10. Damping telescopic rod; 11. Fastening pin; 12. Ejection spring; 13. Fastening groove; 14. Anti-fool strip; 15. Anti-fool groove; 16. Limiting groove; 17. Limiting ring; 18. Extrusion spring; 19. Slide groove; 20. Toggle block; 21. Sealing groove; 22. Sealing strip; 23. Magnet. DETAILED DESCRIPTION

[0021] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] like Figures 1 to 4 As shown, the utility model provides a blade replacement structure for a rotary tiller for agriculture, comprising a mounting ring 1, a plurality of mounting seats 2 are fixedly connected to the top of the mounting ring 1, and the plurality of mounting seats 2 are evenly arranged in a ring shape, a clamping groove 3 is provided on the top of the mounting seat 2, a tilling knife 4 is clamped inside the clamping groove 3, positioning grooves 5 are symmetrically provided on both sides of the tilling knife 4, positioning openings 6 are symmetrically provided on both sides of the mounting seat 2, and the positioning openings 6 are aligned with the positioning grooves 5, a positioning pin 7 is slidably connected inside the positioning opening 6, and the positioning pin 7 is clamped with the positioning groove 5, and the mounting ring 1 is provided with a plurality of mounting seats 2. The surfaces on both sides of the mounting seat 2 are symmetrically fixedly connected with fastening blocks 8, and the fastening blocks 8 are located between the positioning port 6 and the mounting ring 1. A receiving groove 9 is provided on the side of the fastening block 8 close to the positioning pin 7, and a damping telescopic rod 10 is fixedly connected to the bottom of the receiving groove 9, and a fastening pin 11 is fixedly connected to the other end of the damping telescopic rod 10. An ejection spring 12 is sleeved on the surface of the damping telescopic rod 10, and the ejection spring 12 is used in conjunction with the fastening pin 11. A fastening groove 13 is provided on the side of the positioning pin 7 close to the fastening block 8, and the fastening groove 13 is used in conjunction with the fastening pin 11.

[0023] refer to Figure 2 and Figure 4 The inner wall of the clamping groove 3 is symmetrically fixedly connected with an anti-idiot strip 14, and the surface of the soil-turning knife 4 is symmetrically provided with an anti-idiot groove 15, and the anti-idiot groove 15 is slidably connected with the anti-idiot strip 14.

[0024] As a technical optimization solution of the utility model, through the setting of the anti-fool strip 14 and the anti-fool groove 15, a limiting method to avoid errors can be used, so that the operator does not need to spend attention, experience and professional knowledge to directly and accurately complete the correct card connection operation.

[0025] refer to Figure 2 and Figure 4 A limiting groove 16 is provided inside the positioning opening 6, a limiting ring 17 is fixedly connected to the surface of the positioning pin 7, and the limiting ring 17 is slidably connected to the limiting groove 16, and an extrusion spring 18 is fixedly connected to the surface of the positioning pin 7, and the extrusion spring 18 is used in conjunction with the limiting ring 17.

[0026] As a technical optimization solution of the utility model, the setting of the limit groove 16 and the limit ring 17 can prevent the locating pin 7 from slipping out of the locating port 6 and causing it to be lost. The setting of the extrusion spring 18 can give a thrust to the limit ring 17, driving the locating pin 7 to be firmly engaged in the locating groove 5.

[0027] refer to Figure 2 and Figure 3 The fastening block 8 is symmetrically provided with slide grooves 19 on both sides, and the fastening pin 11 is symmetrically fixedly connected with a toggle block 20 on both sides, and the toggle block 20 is slidably connected with the slide grooves 19.

[0028] As a technical optimization solution of the utility model, the arrangement of the slide groove 19 and the toggle block 20 facilitates the worker to press the fastening pin 11 downward when disassembling the soil-turning knife 4, thereby providing the worker with a point of force.

[0029] refer to Figure 2 and Figure 3 A sealing groove 21 is provided at the bottom of the slide groove 19 , a sealing strip 22 is fixedly connected to the surface of the toggle block 20 , and the sealing strip 22 is slidably connected to the sealing groove 21 .

[0030] As a technical optimization solution of the present invention, the sealing groove 21 and the sealing strip 22 are provided to prevent dust from entering the interior of the storage groove 9 through the slide groove 19, thereby improving the stability of the device during use.

[0031] refer to Figure 2 and Figure 3 A magnet 23 is fixedly connected inside the fastening groove 13 , and the magnet 23 is magnetically connected to the fastening pin 11 .

[0032] As a technical optimization solution of the present invention, the connection effect between the fastening groove 13 and the fastening pin 11 can be further improved by providing the magnet 23 .

[0033] The working principle and use process of the utility model are as follows: when the staff uses the rotary tiller cutter head, first install the mounting ring 1 on the output shaft of the external rotary tiller, first press down the toggle block 20 to drive the fastening pin 11 to disengage the fastening groove 13, at this time the fastening pin 11 presses down the damping telescopic rod 10 and the ejection spring 12, then pulls the positioning pin 7 outward to retract it into the positioning port 6, at this time the limit ring 17 squeezes the squeezing spring 18 to compress it, then slides the anti-stupid groove 15 on the tilling knife 4 along the anti-stupid strip 14 on the clamping groove 3, and then releases the positioning pin 7 to make it snap into the positioning groove 5 on the tilling knife 4 through the reaction force of the squeezing spring 18, at this time the reaction force of the ejection spring 12 pushes the fastening pin 11 to snap into the positioning pin 7 The fixing groove 13 makes the fastening pin 11 form a magnetic connection with the magnet 23. At this time, a single tilling knife 4 can achieve a cross-clamping positioning effect by utilizing horizontal and vertical clamping. Similarly, other tilling knives 4 can be installed. When the output shaft of the external rotary tiller is running, it can drive the device to rotate as a whole. At this time, the centrifugal force generated during the rotation can make the fastening pin 11 firmly clamped into the fastening groove 13, thereby further improving the fixing effect of the tilling knife 4. When the tilling knife 4 needs to be replaced separately, similarly, the toggle block 20 is pressed down first to drive the fastening pin 11 to leave the fastening groove 13, and then the positioning pin 7 is pulled outward to make it leave the positioning groove 5 on the tilling knife 4. Finally, the tilling knife 4 can be quickly disassembled by pulling out.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade replacement structure for an agricultural rotary tiller, comprising a mounting ring (1), characterized in that: The top of the mounting ring (1) is fixedly connected to a plurality of mounting seats (2), and the plurality of mounting seats (2) are evenly arranged in a ring shape. A clamping groove (3) is provided on the top of the mounting seat (2), and a soil turning knife (4) is clamped inside the clamping groove (3). Positioning grooves (5) are symmetrically provided on both sides of the soil turning knife (4). Positioning openings (6) are symmetrically provided on both sides of the mounting seat (2), and the positioning openings (6) are aligned with the positioning grooves (5). A positioning pin (7) is slidably connected inside the positioning opening (6), and the positioning pin (7) is clamped with the positioning groove (5). The surfaces on both sides of the mounting seat (2) are symmetrically fixedly connected to fastening A block (8) is provided, and the fastening block (8) is located between the positioning opening (6) and the mounting ring (1); a receiving groove (9) is provided on a side of the fastening block (8) close to the positioning pin (7); a damping telescopic rod (10) is fixedly connected to the bottom of the receiving groove (9); a fastening pin (11) is fixedly connected to the other end of the damping telescopic rod (10); an ejection spring (12) is sleeved on the surface of the damping telescopic rod (10), and the ejection spring (12) is used in conjunction with the fastening pin (11); a fastening groove (13) is provided on a side of the positioning pin (7) close to the fastening block (8), and the fastening groove (13) is used in conjunction with the fastening pin (11).

2. The blade replacement structure for an agricultural rotary tiller according to claim 1, characterized in that: The inner wall of the clamping groove (3) is symmetrically fixedly connected with an anti-idiocy strip (14), and the surface of the soil turning knife (4) is symmetrically provided with an anti-idiocy slot (15), and the anti-idiocy slot (15) is slidably connected with the anti-idiocy strip (14).

3. The blade replacement structure for an agricultural rotary tiller according to claim 1, characterized in that: A limiting groove (16) is provided inside the positioning opening (6); a limiting ring (17) is fixedly connected to the surface of the positioning pin (7), and the limiting ring (17) is slidably connected to the limiting groove (16); a pressing spring (18) is fixedly connected to the surface of the positioning pin (7), and the pressing spring (18) is used in conjunction with the limiting ring (17).

4. The blade replacement structure for an agricultural rotary tiller according to claim 1, characterized in that: The fastening block (8) is symmetrically provided with sliding grooves (19) on both sides, and the fastening pin (11) is symmetrically fixedly connected with a toggle block (20) on both sides, and the toggle block (20) is slidably connected to the sliding grooves (19).

5. The blade replacement structure for an agricultural rotary tiller according to claim 4, characterized in that: A sealing groove (21) is provided at the bottom of the slide groove (19), a sealing strip (22) is fixedly connected to the surface of the shifting block (20), and the sealing strip (22) is slidably connected to the sealing groove (21).

6. The blade replacement structure for an agricultural rotary tiller according to claim 1, characterized in that: A magnet (23) is fixedly connected inside the fastening groove (13), and the magnet (23) is magnetically connected to the fastening pin (11).

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