Rotary cultivator capable of rapidly replacing rotary tillage cutter

Abstract

The invention relates to the technical field of agricultural cultivation equipment, and discloses a rotary cultivator capable of quickly replacing a rotary tillage cutter, which comprises a rotary cultivator main body, and a driving shaft is mounted on the rotary cultivator main body; a plurality of groups of mounting sleeves are fixedly mounted on the surface of the driving shaft at equal intervals; mounting seats which are annularly arranged at equal intervals are fixedly mounted on the surface of the mounting sleeve, one side of each mounting seat is provided with an insertion port matched with the rotary tillage tool body, the rotary tillage tool body is inserted into the insertion ports formed in the mounting seats, and two groups of bolts for performing insertion limiting locking on the rotary tillage tool body are mounted on the mounting seats. According to the rotary cultivator capable of quickly replacing the rotary tillage cutter, the cutter can be quickly mounted and dismounted by adopting an elastic insertion mounting mode without using bolts and tools, so that the time required for replacing the cutter is greatly shortened, especially under the condition that the cutter needs to be frequently replaced.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural tillage equipment, in particular to a rotary tiller with rapidly replaceable rotary tillage cutters. Background Art

[0002] A rotary tiller is a tilling machine that is used in conjunction with a tractor to complete ploughing and harrowing operations. The rotary tiller is used to till the land. Through a unique installation method, the rotary tiller uses a rotating operation to break up the soil on the land, thereby meeting the needs of cultivating the land. Based on the use characteristics of the rotary tiller, when the rotary tiller contacts the ground, once the soil contains hard stones, metal blocks and other substances, the cutter will be damaged if it is in contact with the ground for a long time. In severe cases, the cutter will be unable to break up the soil. Therefore, the cutter needs to be replaced after a period of use. The existing cutters are installed and fixed by bolts, and the bolt installation requires tightening the bolts one by one. This process is relatively time-consuming, especially when the cutters need to be replaced frequently. At the same time, specific tools are required for installation and removal. If there are no suitable tools, it may affect the efficiency and replacement of the cutters. Therefore, we propose a rotary tiller that can quickly replace the rotary tillage cutters to solve the above-mentioned problems. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a rotary tiller with quickly replaceable rotary tilling tools, comprising a rotary tiller body, on which a drive shaft is installed, the drive shaft is used to provide rotational power for the rotary tilling tools, and a plurality of groups of mounting sleeves are equidistantly and fixedly installed on the surface of the rotary tiller body, the mounting sleeves are used to connect the mounting seat and the drive shaft.

[0004] Preferably, the surface of the mounting sleeve is fixedly mounted with mounting seats arranged equidistantly in a ring shape, and the mounting seats are used to install the rotary tiller tool body. One side of the mounting seats is provided with a plug-in interface that is compatible with the rotary tiller tool body. The shape and size of the plug-in interface match the rotary tiller tool body, so that the rotary tiller tool body can be accurately plugged into the plug-in interface opened on the mounting seat.

[0005] Preferably, a device for inserting and locking the rotary tiller tool body is installed on the mounting seat, and the device includes two groups of pins and a spring. The pins are used to limit the movement of the rotary tiller tool body in the plug-in interface, and the spring is sleeved on the pins to provide elastic reset force for the pins.

[0006] Preferably, the mounting seat is provided with mounting cavity one and mounting cavity two on both sides of the plug interface, a connecting plate is provided on one side of the mounting seat, two groups of the pins are fixed on the surface of the connecting plate, and a through hole matched with the pin is provided on the rotary tillage tool body, and the pin passes through the through hole provided on the rotary tillage tool body to realize accurate limiting of the rotary tillage tool body.

[0007] Preferably, a movable hole adapted to the latch is provided on the mounting seat, and the latch and the mounting seat are slidably connected via the movable hole. Two groups of blocking disks are provided in the mounting cavity one, and the two groups of blocking disks are respectively fixedly mounted on the surfaces of the two groups of latches. The two ends of the spring one are respectively fixedly connected to the blocking disk and the mounting seat, and the elastic movement and limiting of the latch are achieved through the cooperation of the blocking disk and the spring one.

[0008] Preferably, in the initial state of the spring, a gap portion 1 is provided on one side wall of the mounting cavity opened by the blocking disk and the mounting seat, and a gap portion 2 is provided between the connecting plate and the outer wall of the mounting seat, and the gap portion 1 and the gap portion 2 are used to limit the initial position and movement range of the pin.

[0009] Preferably, a plurality of groups of thimbles arranged equidistantly in a ring are fixedly mounted on the surface of the blocking disk, a circular hole adapted for the thimble is opened inside the mounting seat, and both ends of the circular hole are respectively connected to the plug interface and the mounting cavity, and the thimble is used to assist in positioning and stabilizing the rotary tiller tool body during the tool installation process.

[0010] Preferably, two groups of rod bodies are arranged in the second installation cavity, a convex groove is formed at one end of the pin, and an inclined block is provided at a position of the convex groove formed on the pin in the second installation cavity, and the two groups of inclined blocks are fixedly mounted on the two groups of rod bodies, a sphere is provided on one side of the mounting seat, and the sphere is fixedly mounted on one end of the two groups of rod bodies, and a fixing plate is also arranged inside the second installation cavity, and the fixing plate and the two groups of rod bodies are fixedly connected, and a second spring is fixed between the fixing plate and the mounting seat, and the second spring is wound around the surfaces of the two groups of rod bodies, and through the cooperation of the rod body, the inclined block, the sphere, the fixing plate and the second spring, further control of the pin and stable installation of the tool are achieved.

[0011] Preferably, a sliding hole matched with the rod body is provided on the mounting seat, and the rod body and the mounting seat are slidably connected through the sliding hole. The spacing between the two groups of rod bodies is smaller than the opening size of the convex groove provided by the pin to ensure effective cooperation between the rod body and the pin.

[0012] Preferably, the rotary tillage tool body is made of high-strength alloy material and undergoes a special heat treatment process to ensure sharpness while having excellent wear resistance and impact resistance. Its surface is coated with a nano-level anti-corrosion coating to extend its service life and adapt to complex soil environments.

[0013] Beneficial Effects The present invention provides a rotary tiller with a quick replaceable rotary tillage cutter. Compared with the prior art, it has the following beneficial effects: The present invention adopts an elastic plug-in installation method, and no bolts and tools are required when installing the rotary tillage cutter. The cutter only needs to be inserted into the plug interface of the mounting seat, and the installation can be completed through simple operations. When removing the cutter, the operation is also simple and quick. This design greatly reduces the time required for replacing the cutter, especially when the cutter needs to be replaced frequently, such as when the cutter is frequently damaged due to continuous operation on a large area of ​​land or poor soil conditions, and when there is a lack of auxiliary tools for replacement, it can significantly improve work efficiency and reduce operation delays; through the synergistic effect of the pins, springs, installation cavities and other components in the cutter installation limit structure, and the dynamic cooperation of the ejector, rod body, tilting block and other components in the cutter installation auxiliary positioning and stabilization structure during the working process of the rotary tiller, the rotary tillage cutter is more stable after installation. When the rotary tiller is working, the cutter can withstand greater impact and centrifugal force, is not easy to loosen or shift, improves the reliability and stability of the rotary tiller during operation, and thus ensures the quality of cultivated land; the material and surface treatment method of the rotary tillage cutter body provide it with good performance guarantee. The high-strength alloy material has undergone special heat treatment, making it have excellent wear resistance and impact resistance, and can effectively resist damage to the tool by foreign matter in the soil. The nano-level anti-corrosion coating can prevent soil corrosion, further extend the service life of the tool, reduce the cost of use, and improve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the connecting parts such as the mounting sleeve and the mounting seat of the present invention; Figure 3 This is a cross-sectional view of the mounting seat structure of the present invention; Figure 4 This is a structural cross-sectional view of the mounting base of the present invention from another perspective.

[0015] In the figure: 101, rotary tiller body; 102, driving shaft; 103, mounting sleeve; 104, mounting seat; 105, rotary tiller tool body; 106, plug interface; 107, connecting plate; 108, spring 1; 109, blocking plate; 110, ejector pin; 111, convex groove; 112, tilting block; 113, rod body; 114, fixing plate; 115, spring 2; 116, ball; 117, latch. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1 As shown: A rotary tiller with quickly replaceable rotary tilling cutters comprises a rotary tiller body 101.

[0018] In this embodiment: In order to solve the technical problems existing in the prior art, as disclosed in the background technology above, "the existing tools are installed and fixed by bolts, and the bolt installation requires tightening the bolts one by one. This process is relatively time-consuming, especially when the tools need to be replaced frequently. At the same time, specific tools are required for installation and disassembly. If there are no suitable tools, it may affect the efficiency and replacement of the tools." In combination with use, this problem is obviously a real problem that exists and is difficult to solve.

[0019] More specifically: like Figure 1-Figure 4 As shown: In combination with the above content: a driving shaft 102 is installed on the rotary tiller body 101; A plurality of mounting sleeves 103 are fixedly mounted on the surface of the driving shaft 102 at equal intervals; The surface of the mounting sleeve 103 is fixedly mounted with mounting seats 104 arranged equidistantly in a ring shape, and one side of the mounting seat 104 is provided with an insertion port 106 adapted to the rotary tillage tool body 105, and the rotary tillage tool body 105 is plugged into the insertion port 106 provided in the mounting seat 104; Two sets of latches 117 are installed on the mounting seat 104 to lock the rotary tillage tool body 105, and a spring 108 is sleeved on the latches 117; The mounting seat 104 is provided with a mounting cavity 1 and a mounting cavity 2 on both sides of the plug interface 106, and a connecting plate 107 is provided on one side of the mounting seat 104. Two groups of latches 117 are fixed on the surface of the connecting plate 107. A through hole matching the latches 117 is provided on the rotary tillage tool body 105, and the latches 117 pass through the through hole provided on the rotary tillage tool body 105. The mounting seat 104 is provided with a movable hole adapted to the latch 117, and the latch 117 and the mounting seat 104 are slidably connected through the movable hole. Two groups of blocking discs 109 are arranged in the mounting cavity 1, and the two groups of blocking discs 109 are respectively fixedly mounted on the surfaces of the two groups of latches 117, and the two ends of the spring 108 are respectively fixedly connected to the blocking discs 109 and the mounting seat 104; In the initial state of the spring 108 , a gap portion 1 is provided on one side wall of the installation cavity defined by the blocking disk 109 and the installation seat 104 , and a gap portion 2 is provided between the connecting plate 107 and the outer wall of the installation seat 104 .

[0020] In this embodiment, the rotary tiller with quickly replaceable rotary tillage cutters contains hard stones and metal blocks when breaking the soil. The rotary tillage cutter body 105 will be damaged if it contacts with them for a long time. When the rotary tillage cutter body 105 needs to be installed, first align one end of the rotary tillage cutter body 105 with the plug interface 106 provided on the mounting seat 104, and pull the connecting plate 107 at the same time, thereby driving the two sets of latches 117 to slide on the mounting seat 104. Under the action of the blocking plate 109, the spring 108 is compressed, so that the latch 1 One end of the latch 117 is moved into the installation cavity 1, and then one end of the rotary tillage tool body 105 is inserted into the plug interface 106 provided in the installation seat 104, and then the connecting plate 107 is loosened. At this time, the rebound force of the spring 108 drives the latch 117 to reset. At this time, the latch 117 passes through the through hole provided in the rotary tillage tool body 105, and one end of the latch 117 is moved into the installation cavity 2, and the rotary tillage tool body 105 is limited by the latch 117, so that the rotary tillage tool body 105 is locked in the plug interface 106 provided in the installation seat 104; Through the above operations, the device adopts an elastic plug-in installation method, and the tool can be quickly installed and removed without using bolts and tools. This design greatly reduces the time required for tool replacement, especially when the tool needs to be replaced frequently, which can significantly improve work efficiency.

[0021] Going further; In an optional embodiment, a plurality of groups of ejector pins 110 arranged in an annular manner and at equal intervals are fixedly installed on the surface of the blocking disk 109, a circular hole adapted to the ejector pin 110 is provided inside the mounting seat 104, and the two ends of the circular hole are respectively connected with the plug interface 106 and the mounting cavity 1, two groups of rod bodies 113 are provided in the mounting cavity 2, a convex groove 111 is provided at one end of the latch 117, and an inclined block 112 is provided at a position of the convex groove 111 provided on the latch 117 in the mounting cavity 2, and the two groups of inclined blocks 112 are fixedly installed on the two groups of rod bodies 113, a sphere 116 is provided on one side of the mounting seat 104, and the sphere 116 is fixedly installed on one end of the two groups of rod bodies 113, a fixing plate 114 is further provided inside the mounting cavity 2, and the fixing plate 114 is fixedly connected to the two groups of rod bodies 113, a second spring 115 is fixed between the fixing plate 114 and the mounting seat 104, and the second spring 115 is wound around the surface of the two groups of rod bodies 113; The mounting seat 104 is provided with a sliding hole adapted to the rod body 113 , and the rod body 113 and the mounting seat 104 are slidably connected via the sliding hole. The distance between the two groups of rod bodies 113 is smaller than the opening size of the convex groove 111 formed by the latch 117 .

[0022] In this embodiment, when the rotary tiller body 101 drives the driving shaft 102 to rotate, the mounting sleeve 103, the mounting seat 104 and the rotary tiller tool body 105 are driven to rotate synchronously. During this process, the ball 116 is thrown outward due to the centrifugal force, and at the same time, the ball 116 drives the two groups of rods 113 to slide on the mounting seat 104, and compresses the spring 115. At the same time, the rod 113 drives the two groups of tilting blocks 112 to move. Since one side of the tilting block 112 is designed with an inclined surface, the tilting block 112 moves and moves in the convex groove 111 opened on the latch 117. The latch 117 is squeezed, and along with the inclined surface of one side of the tilting block 112, the latch 117 is squeezed and moved laterally while the tilting block 112 moves. At this time, when the latch 117 moves laterally, the blocking plate 109 drives multiple groups of ejectors 110 to move synchronously, and the ejectors 110 are used to squeeze the side of the rotary tillage tool body 105. As a result, the rotary tiller body 101 drives the rotary tillage tool body 105 to rotate, and the centrifugal force generated during the operation is used to squeeze the rotary tillage tool body 105, so that the installation of the rotary tillage tool body 105 is more stable.

[0023] In addition, the heat treatment process of the rotary tillage tool body of this embodiment can be carried out by the following steps: S1. Preheating: Place the rotary tillage tool blank (made of high-strength alloy) in a heating furnace, heat it to 300 - 400°C at a slow heating rate, and keep it at this temperature for 1 - 2 hours. The purpose of this step is to eliminate the internal stress generated in the blank during processing and prevent deformation or cracking during the subsequent rapid heating process.

[0024] S2. Austenitizing heating: Continue to increase the temperature to the austenitizing temperature range of the alloy at a faster heating rate. For most high-strength alloys suitable for rotary tillage tools, the austenitizing temperature is usually between 800-1000°C. After reaching the austenitizing temperature, keep the temperature for an appropriate time, generally 1-3 hours, to fully austenitize the alloy and ensure that the various phases in the alloy can be evenly transformed into austenite structure, laying the foundation for subsequent cooling treatment.

[0025] S3, quenching cooling; after taking out the tool blank from the austenitizing temperature, quickly put it into a suitable quenching medium for cooling. The quenching medium can be selected according to the alloy composition and tool performance requirements. Common ones are oil, water or polymer quenching agents. For example, if higher hardness and wear resistance are required, oil quenching can be selected; if higher toughness requirements are required for the tool, water quenching or polymer quenching agents may be selected. The quenching cooling speed must be fast enough to inhibit the transformation of austenite to other structures such as pearlite, so as to obtain martensite structure and improve the hardness and strength of the tool.

[0026] S4. Tempering treatment: The hardness of the tool after quenching is higher, but the toughness may be poor, and there is a large internal stress. Therefore, tempering treatment is required. The tempering temperature is generally selected between 150-650°C, and the specific temperature is determined according to the performance requirements of the tool. For example, if you need to improve the toughness of the tool and eliminate internal stress, you can choose to temper at 200-300°C; if you need to further adjust the hardness and toughness balance of the tool, you can choose to temper at 500-600°C. The tempering time is generally 1-3 hours, and the number of tempering times may be 1-3 times. The specific number and time also need to be adjusted according to the performance requirements of the tool. During the tempering process, the martensitic structure will decompose, the internal stress will be released, and the toughness and hardness of the tool will be reasonably adjusted, so that it can better meet the requirements of rotary tillage operations.

[0027] Through the above-mentioned special heat treatment process, the high-strength alloy material of the rotary tillage tool can ensure sharpness while having excellent wear resistance and impact resistance, meeting the use requirements of the rotary tillage tool in complex soil environments.

[0028] In combination with the above embodiments, the working principle and use process of the present invention are as follows: the rotary tiller with quickly replaceable rotary tillage cutters contains hard stones and metal blocks when breaking the soil, and the rotary tillage cutter body 105 will be damaged if it contacts with them for a long time. When the rotary tillage cutter body 105 needs to be installed, first align one end of the rotary tillage cutter body 105 with the plug interface 106 provided on the mounting seat 104, and at the same time pull the connecting plate 107, thereby driving the two sets of latches 117 to slide on the mounting seat 104, and under the action of the blocking plate 109, the spring 108 is compressed, so that One end of the latch 117 moves into the installation cavity 1, and then one end of the rotary tillage tool body 105 is inserted into the plug interface 106 provided in the mounting seat 104, and then the connecting plate 107 is loosened. At this time, the rebound force of the spring 108 drives the latch 117 to reset. At this time, the latch 117 passes through the through hole provided in the rotary tillage tool body 105, and one end of the latch 117 is moved into the installation cavity 2, and the rotary tillage tool body 105 is limited by the latch 117, so that the rotary tillage tool body 105 is locked in the plug interface 106 provided in the mounting seat 104. At this time, the tilting block 112 is in the When the rotary tiller body 101 drives the drive shaft 102 to rotate, the mounting sleeve 103, the mounting seat 104 and the rotary tiller tool body 105 are driven to rotate synchronously. During this process, the ball 116 is thrown outward due to the centrifugal force. At the same time, the ball 116 drives the two groups of rods 113 to slide on the mounting seat 104, and compresses the spring 115. At the same time, the rod 113 drives the two groups of tilting blocks 112 to move. Since one side of the tilting block 112 is designed with an inclined surface, the tilting block 112 is in the convex groove 111 opened by the latch 117. 11 moves and squeezes the pin 117. With the inclined surface of one side of the tilting block 112, the tilting block 112 moves and then squeezes the pin 117 laterally. At this time, when the pin 117 moves laterally, it drives multiple groups of ejectors 110 to move synchronously through the blocking plate 109, and squeezes the side of the rotary tillage tool body 105 through the ejector pins 110. During the rotation of the rotary tiller body 101 driving the rotary tillage tool body 105, the centrifugal force generated is used to squeeze the rotary tillage tool body 105, so that the installation of the rotary tillage tool body 105 is more stable.

[0029] In combination with the above embodiments and working principles, it can be known that the present invention adopts an elastic plug-in installation method, and no bolts and tools are required when installing the rotary tillage tool. The tool only needs to be inserted into the plug interface of the mounting seat, and the installation can be completed through simple operations. When removing the tool, the operation is also simple and quick. This design greatly reduces the time required to replace the tool, especially in situations where the tool needs to be replaced frequently, such as continuous operation on a large area of ​​land or poor soil conditions that cause frequent damage to the tool, and when there is a lack of replacement auxiliary tools, it can significantly improve work efficiency and reduce operation delays; Through the coordinated action of the pins, springs, and installation cavities in the tool installation limit structure, as well as the dynamic coordination of the ejector pins, rods, tilting blocks, and other components in the tool installation auxiliary positioning and stabilization structure during the operation of the rotary tiller, the rotary tiller tool is more stable after installation. When the rotary tiller is working, the tool can withstand greater impact and centrifugal force, and is less likely to loosen or shift, which improves the reliability and stability of the rotary tiller during operation, thereby ensuring the quality of cultivated land; The material and surface treatment of the rotary tillage cutter body provide good performance guarantee. The high-strength alloy material has undergone special heat treatment, which makes it have excellent wear resistance and impact resistance, and can effectively resist the damage of foreign matter in the soil to the cutter. The nano-level anti-corrosion coating can prevent soil corrosion, further extend the service life of the cutter, reduce the cost of use, and improve economic benefits.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A rotary tiller capable of quickly replacing rotary tillage cutters, characterized in that: The rotary tiller body (101) comprises a driving shaft (102) mounted on the rotary tiller body (101), the driving shaft (102) being used to provide rotational power for a rotary tiller cutter, and a plurality of groups of mounting sleeves (103) being fixedly mounted at equal intervals on the surface of the rotary tiller body (101), the mounting sleeves (103) being used to connect a mounting seat and the driving shaft.

2. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 1, characterized in that: The surface of the mounting sleeve (103) is fixedly mounted with mounting seats (104) arranged equidistantly in a ring shape. The mounting seats (104) are used to mount a rotary tillage tool body, and one side of the mounting seats is provided with an insertion port (106) adapted to the rotary tillage tool body (105). The shape and size of the insertion port (106) match those of the rotary tillage tool body (105), so that the rotary tillage tool body (105) can be accurately plugged into the insertion port (106) provided on the mounting seats (104).

3. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 2, characterized in that: A device for inserting and locking the rotary tillage tool body (105) is installed on the mounting seat (104), and the device comprises two groups of latches (117) and a spring 1 (108). The latches (117) are used to limit the movement of the rotary tillage tool body (105) in the insertion port (106), and the spring 1 (108) is sleeved on the latches (117) to provide an elastic restoring force for the latches (117).

4. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 3, characterized in that: The mounting seat (104) is provided with mounting cavity one and mounting cavity two on both sides of the plug interface (106), a connecting plate (107) is provided on one side of the mounting seat (104), two groups of latches (117) are fixed on the surface of the connecting plate (107), a through hole matching the latches (117) is provided on the rotary tillage tool body (105), and the latches (117) pass through the through hole provided on the rotary tillage tool body (105) to achieve accurate positioning of the rotary tillage tool body (105).

5. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 4, characterized in that: The mounting seat (104) is provided with a movable hole adapted to the latch pin (117), the latch pin (117) and the mounting seat (104) are slidably connected via the movable hole, two groups of blocking disks (109) are arranged in the mounting cavity (1), the two groups of blocking disks (109) are respectively fixedly mounted on the surfaces of the two groups of latch pins (117), the two ends of the spring (108) are respectively fixedly connected to the blocking disks (109) and the mounting seat (104), and the elastic movement and limiting of the latch pin (117) are achieved through the cooperation between the blocking disks (109) and the spring (108).

6. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 5, characterized in that: When the spring 1 (108) is in the initial state, a gap portion 1 is provided on a side wall of the installation cavity opened by the blocking disk (109) and the installation seat (104), and a gap portion 2 is provided between the connecting plate (107) and the outer wall of the installation seat (104), and the gap portion 1 and the gap portion 2 are used to limit the initial position and movement range of the latch (117).

7. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 6, characterized in that: A plurality of groups of thimbles (110) arranged equidistantly in a ring shape are fixedly mounted on the surface of the blocking disk (109); a circular hole matching the thimbles (110) is provided inside the mounting seat (104); and both ends of the circular hole are respectively connected to the insertion port (106) and the mounting cavity; the thimbles (110) are used to assist in positioning and stabilizing the rotary tiller tool body (105) during the tool installation process.

8. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 7, characterized in that: Two groups of rod bodies (113) are arranged in the second installation cavity, one end of the latch (117) is provided with a convex groove (111), and a tilting block (112) is arranged in the second installation cavity near the convex groove (111) provided on the latch (117), and the two groups of tilting blocks (112) are fixedly mounted on the two groups of rod bodies (113), and a sphere (116) is arranged on one side of the mounting seat (104), and the sphere (116) is fixedly mounted on one end of the two groups of rod bodies (113). A fixing plate (114) is also provided, the fixing plate (114) and the two groups of rod bodies (113) are fixedly connected, a second spring (115) is fixed between the fixing plate (114) and the mounting seat (104), the second spring (115) is wound around the surfaces of the two groups of rod bodies (113), and further control of the latch (117) and stable installation of the tool are achieved through the cooperation of the rod bodies (113), the tilting block (112), the sphere (116), the fixing plate (114) and the second spring (115).

9. A rotary tiller with quickly replaceable rotary tilling cutters according to claim 8, characterized in that: The mounting seat (104) is provided with a sliding hole adapted to the rod body (113); the rod body (113) and the mounting seat (104) are slidably connected via the sliding hole; the spacing between the two groups of rod bodies (113) is smaller than the opening size of the convex groove (111) provided by the latch (117), so as to ensure effective matching between the rod body (113) and the latch (117).

10. A rotary tiller with quickly replaceable rotary tilling cutters according to any one of claims 1 to 9, characterized in that: The rotary tillage tool body (105) is made of a high-strength alloy material and undergoes a special heat treatment process, so that it has excellent wear resistance and impact resistance while ensuring sharpness, and its surface is coated with a layer of nano-level anti-corrosion coating to extend its service life and adapt to complex soil environments.

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